X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f701d7abc1d35bdbee686cbe2b541b1b5119bf31..005659f0ffe0b280c3f800a5706b93fe9b78276e:/src/common/wincmn.cpp diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp index 087ab89f12..ff653cb830 100644 --- a/src/common/wincmn.cpp +++ b/src/common/wincmn.cpp @@ -1,64 +1,4001 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: windows.cpp +// Name: src/common/wincmn.cpp // Purpose: common (to all ports) wxWindow functions // Author: Julian Smart, Vadim Zeitlin // Modified by: // Created: 13/07/98 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Copyright: (c) wxWidgets team +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop +#endif + +#ifndef WX_PRECOMP + #include "wx/string.h" + #include "wx/log.h" + #include "wx/intl.h" + #include "wx/frame.h" + #include "wx/window.h" + #include "wx/control.h" + #include "wx/checkbox.h" + #include "wx/radiobut.h" + #include "wx/statbox.h" + #include "wx/textctrl.h" + #include "wx/settings.h" + #include "wx/dialog.h" + #include "wx/msgdlg.h" + #include "wx/msgout.h" + #include "wx/statusbr.h" + #include "wx/toolbar.h" + #include "wx/dcclient.h" + #include "wx/scrolbar.h" + #include "wx/layout.h" + #include "wx/sizer.h" + #include "wx/menu.h" +#endif //WX_PRECOMP + +#if wxUSE_DRAG_AND_DROP + #include "wx/dnd.h" +#endif // wxUSE_DRAG_AND_DROP + +#if wxUSE_ACCESSIBILITY + #include "wx/access.h" +#endif + +#if wxUSE_HELP + #include "wx/cshelp.h" +#endif // wxUSE_HELP + +#if wxUSE_TOOLTIPS + #include "wx/tooltip.h" +#endif // wxUSE_TOOLTIPS + +#if wxUSE_CARET + #include "wx/caret.h" +#endif // wxUSE_CARET + +#if wxUSE_SYSTEM_OPTIONS + #include "wx/sysopt.h" +#endif + +#include "wx/platinfo.h" +#include "wx/private/window.h" + +#ifdef __WINDOWS__ + #include "wx/msw/wrapwin.h" +#endif + +// Windows List +WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows; + +// globals +#if wxUSE_MENUS +wxMenu *wxCurrentPopupMenu = NULL; +#endif // wxUSE_MENUS + +extern WXDLLEXPORT_DATA(const char) wxPanelNameStr[] = "panel"; + +// ---------------------------------------------------------------------------- +// static data +// ---------------------------------------------------------------------------- + + +IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler) + +// ---------------------------------------------------------------------------- +// event table +// ---------------------------------------------------------------------------- + +BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler) + EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged) + EVT_INIT_DIALOG(wxWindowBase::OnInitDialog) + EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick) + +#if wxUSE_HELP + EVT_HELP(wxID_ANY, wxWindowBase::OnHelp) +#endif // wxUSE_HELP + + EVT_SIZE(wxWindowBase::InternalOnSize) +END_EVENT_TABLE() + +// ============================================================================ +// implementation of the common functionality of the wxWindow class +// ============================================================================ + +// ---------------------------------------------------------------------------- +// XTI +// ---------------------------------------------------------------------------- + +#if wxUSE_EXTENDED_RTTI + +// windows that are created from a parent window during its Create method, +// eg. spin controls in a calendar controls must never been streamed out +// separately otherwise chaos occurs. Right now easiest is to test for negative ids, +// as windows with negative ids never can be recreated anyway + + +bool wxWindowStreamingCallback( const wxObject *object, wxObjectWriter *, + wxObjectWriterCallback *, const wxStringToAnyHashMap & ) +{ + const wxWindow * win = wx_dynamic_cast(const wxWindow*, object); + if ( win && win->GetId() < 0 ) + return false; + return true; +} + +wxIMPLEMENT_DYNAMIC_CLASS_XTI_CALLBACK(wxWindow, wxWindowBase, "wx/window.h", \ + wxWindowStreamingCallback) + +// make wxWindowList known before the property is used + +wxCOLLECTION_TYPE_INFO( wxWindow*, wxWindowList ); + +template<> void wxCollectionToVariantArray( wxWindowList const &theList, + wxAnyList &value) +{ + wxListCollectionToAnyList( theList, value ); +} + +wxDEFINE_FLAGS( wxWindowStyle ) + +wxBEGIN_FLAGS( wxWindowStyle ) +// new style border flags, we put them first to +// use them for streaming out + +wxFLAGS_MEMBER(wxBORDER_SIMPLE) +wxFLAGS_MEMBER(wxBORDER_SUNKEN) +wxFLAGS_MEMBER(wxBORDER_DOUBLE) +wxFLAGS_MEMBER(wxBORDER_RAISED) +wxFLAGS_MEMBER(wxBORDER_STATIC) +wxFLAGS_MEMBER(wxBORDER_NONE) + +// old style border flags +wxFLAGS_MEMBER(wxSIMPLE_BORDER) +wxFLAGS_MEMBER(wxSUNKEN_BORDER) +wxFLAGS_MEMBER(wxDOUBLE_BORDER) +wxFLAGS_MEMBER(wxRAISED_BORDER) +wxFLAGS_MEMBER(wxSTATIC_BORDER) +wxFLAGS_MEMBER(wxBORDER) + +// standard window styles +wxFLAGS_MEMBER(wxTAB_TRAVERSAL) +wxFLAGS_MEMBER(wxCLIP_CHILDREN) +wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW) +wxFLAGS_MEMBER(wxWANTS_CHARS) +wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE) +wxFLAGS_MEMBER(wxALWAYS_SHOW_SB ) +wxFLAGS_MEMBER(wxVSCROLL) +wxFLAGS_MEMBER(wxHSCROLL) + +wxEND_FLAGS( wxWindowStyle ) + +wxBEGIN_PROPERTIES_TABLE(wxWindow) +wxEVENT_PROPERTY( Close, wxEVT_CLOSE_WINDOW, wxCloseEvent) +wxEVENT_PROPERTY( Create, wxEVT_CREATE, wxWindowCreateEvent ) +wxEVENT_PROPERTY( Destroy, wxEVT_DESTROY, wxWindowDestroyEvent ) +// Always constructor Properties first + +wxREADONLY_PROPERTY( Parent,wxWindow*, GetParent, wxEMPTY_PARAMETER_VALUE, \ + 0 /*flags*/, wxT("Helpstring"), wxT("group")) +wxPROPERTY( Id,wxWindowID, SetId, GetId, -1 /*wxID_ANY*/, 0 /*flags*/, \ + wxT("Helpstring"), wxT("group") ) +wxPROPERTY( Position,wxPoint, SetPosition, GetPosition, wxDefaultPosition, \ + 0 /*flags*/, wxT("Helpstring"), wxT("group")) // pos +wxPROPERTY( Size,wxSize, SetSize, GetSize, wxDefaultSize, 0 /*flags*/, \ + wxT("Helpstring"), wxT("group")) // size +wxPROPERTY( WindowStyle, long, SetWindowStyleFlag, GetWindowStyleFlag, \ + wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, wxT("Helpstring"), wxT("group")) // style +wxPROPERTY( Name,wxString, SetName, GetName, wxEmptyString, 0 /*flags*/, \ + wxT("Helpstring"), wxT("group") ) + +// Then all relations of the object graph + +wxREADONLY_PROPERTY_COLLECTION( Children, wxWindowList, wxWindowBase*, \ + GetWindowChildren, wxPROP_OBJECT_GRAPH /*flags*/, \ + wxT("Helpstring"), wxT("group")) + +// and finally all other properties + +wxPROPERTY( ExtraStyle, long, SetExtraStyle, GetExtraStyle, wxEMPTY_PARAMETER_VALUE, \ + 0 /*flags*/, wxT("Helpstring"), wxT("group")) // extstyle +wxPROPERTY( BackgroundColour, wxColour, SetBackgroundColour, GetBackgroundColour, \ + wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, wxT("Helpstring"), wxT("group")) // bg +wxPROPERTY( ForegroundColour, wxColour, SetForegroundColour, GetForegroundColour, \ + wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, wxT("Helpstring"), wxT("group")) // fg +wxPROPERTY( Enabled, bool, Enable, IsEnabled, wxAny((bool)true), 0 /*flags*/, \ + wxT("Helpstring"), wxT("group")) +wxPROPERTY( Shown, bool, Show, IsShown, wxAny((bool)true), 0 /*flags*/, \ + wxT("Helpstring"), wxT("group")) + +#if 0 +// possible property candidates (not in xrc) or not valid in all subclasses +wxPROPERTY( Title,wxString, SetTitle, GetTitle, wxEmptyString ) +wxPROPERTY( Font, wxFont, SetFont, GetWindowFont , ) +wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxEmptyString ) +// MaxHeight, Width, MinHeight, Width +// TODO switch label to control and title to toplevels + +wxPROPERTY( ThemeEnabled, bool, SetThemeEnabled, GetThemeEnabled, ) +//wxPROPERTY( Cursor, wxCursor, SetCursor, GetCursor, ) +// wxPROPERTY( ToolTip, wxString, SetToolTip, GetToolTipText, ) +wxPROPERTY( AutoLayout, bool, SetAutoLayout, GetAutoLayout, ) +#endif +wxEND_PROPERTIES_TABLE() + +wxEMPTY_HANDLERS_TABLE(wxWindow) + +wxCONSTRUCTOR_DUMMY(wxWindow) + +#else + +#ifndef __WXUNIVERSAL__ +IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowBase) +#endif + +#endif + +// ---------------------------------------------------------------------------- +// initialization +// ---------------------------------------------------------------------------- + +// the default initialization +wxWindowBase::wxWindowBase() +{ + // no window yet, no parent nor children + m_parent = NULL; + m_windowId = wxID_ANY; + + // no constraints on the minimal window size + m_minWidth = + m_maxWidth = wxDefaultCoord; + m_minHeight = + m_maxHeight = wxDefaultCoord; + + // invalidiated cache value + m_bestSizeCache = wxDefaultSize; + + // window are created enabled and visible by default + m_isShown = + m_isEnabled = true; + + // the default event handler is just this window + m_eventHandler = this; + +#if wxUSE_VALIDATORS + // no validator + m_windowValidator = NULL; +#endif // wxUSE_VALIDATORS + + // the colours/fonts are default for now, so leave m_font, + // m_backgroundColour and m_foregroundColour uninitialized and set those + m_hasBgCol = + m_hasFgCol = + m_hasFont = false; + m_inheritBgCol = + m_inheritFgCol = + m_inheritFont = false; + + // no style bits + m_exStyle = + m_windowStyle = 0; + + m_backgroundStyle = wxBG_STYLE_ERASE; + +#if wxUSE_CONSTRAINTS + // no constraints whatsoever + m_constraints = NULL; + m_constraintsInvolvedIn = NULL; +#endif // wxUSE_CONSTRAINTS + + m_windowSizer = NULL; + m_containingSizer = NULL; + m_autoLayout = false; + +#if wxUSE_DRAG_AND_DROP + m_dropTarget = NULL; +#endif // wxUSE_DRAG_AND_DROP + +#if wxUSE_TOOLTIPS + m_tooltip = NULL; +#endif // wxUSE_TOOLTIPS + +#if wxUSE_CARET + m_caret = NULL; +#endif // wxUSE_CARET + +#if wxUSE_PALETTE + m_hasCustomPalette = false; +#endif // wxUSE_PALETTE + +#if wxUSE_ACCESSIBILITY + m_accessible = NULL; #endif -#include "wx/frame.h" + m_virtualSize = wxDefaultSize; + + m_scrollHelper = NULL; -#include "wx/defs.h" -#include "wx/window.h" + m_windowVariant = wxWINDOW_VARIANT_NORMAL; +#if wxUSE_SYSTEM_OPTIONS + if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) ) + { + m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ; + } +#endif + + // Whether we're using the current theme for this window (wxGTK only for now) + m_themeEnabled = false; -// Do Update UI processing for child controls + // This is set to true by SendDestroyEvent() which should be called by the + // most derived class to ensure that the destruction event is sent as soon + // as possible to allow its handlers to still see the undestroyed window + m_isBeingDeleted = false; -// TODO: should this be implemented for the child window rather -// than the parent? Then you can override it e.g. for wxCheckBox -// to do the Right Thing rather than having to assume a fixed number -// of control classes. -#include "wx/checkbox.h" -#include "wx/radiobut.h" + m_freezeCount = 0; +} -void wxWindow::UpdateWindowUI() +// common part of window creation process +bool wxWindowBase::CreateBase(wxWindowBase *parent, + wxWindowID id, + const wxPoint& WXUNUSED(pos), + const wxSize& size, + long style, + const wxString& name) { - wxWindowID id = GetId(); - if (id > 0) - { - wxUpdateUIEvent event(id); - event.m_eventObject = this; + // ids are limited to 16 bits under MSW so if you care about portability, + // it's not a good idea to use ids out of this range (and negative ids are + // reserved for wxWidgets own usage) + wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) || + (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST), + wxT("invalid id value") ); - if (this->GetEventHandler()->ProcessEvent(event)) + // generate a new id if the user doesn't care about it + if ( id == wxID_ANY ) + { + m_windowId = NewControlId(); + } + else // valid id specified { - if (event.GetSetEnabled()) - this->Enable(event.GetEnabled()); + m_windowId = id; + } - if (event.GetSetText() && this->IsKindOf(CLASSINFO(wxControl))) - ((wxControl*)this)->SetLabel(event.GetText()); + // don't use SetWindowStyleFlag() here, this function should only be called + // to change the flag after creation as it tries to reflect the changes in + // flags by updating the window dynamically and we don't need this here + m_windowStyle = style; - if (this->IsKindOf(CLASSINFO(wxCheckBox))) - { - if (event.GetSetChecked()) - ((wxCheckBox *) this)->SetValue(event.GetChecked()); - } - // @@@ No radio buttons in wxGTK yet -#ifndef __WXGTK__ - else if (this->IsKindOf(CLASSINFO(wxRadioButton))) - { - if (event.GetSetChecked()) - ((wxRadioButton *) this)->SetValue(event.GetChecked()); - } + // assume the user doesn't want this window to shrink beneath its initial + // size, this worked like this in wxWidgets 2.8 and before and generally + // often makes sense for child windows (for top level ones it definitely + // does not as the user should be able to resize the window) + // + // note that we can't use IsTopLevel() from ctor + if ( size != wxDefaultSize && !wxTopLevelWindows.Find((wxWindow *)this) ) + SetMinSize(size); + + SetName(name); + SetParent(parent); + + return true; +} + +bool wxWindowBase::CreateBase(wxWindowBase *parent, + wxWindowID id, + const wxPoint& pos, + const wxSize& size, + long style, + const wxValidator& wxVALIDATOR_PARAM(validator), + const wxString& name) +{ + if ( !CreateBase(parent, id, pos, size, style, name) ) + return false; + +#if wxUSE_VALIDATORS + SetValidator(validator); +#endif // wxUSE_VALIDATORS + + // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to + // have it too - like this it's possible to set it only in the top level + // dialog/frame and all children will inherit it by defult + if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) ) + { + SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY); + } + + return true; +} + +bool wxWindowBase::ToggleWindowStyle(int flag) +{ + wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") ); + + bool rc; + long style = GetWindowStyleFlag(); + if ( style & flag ) + { + style &= ~flag; + rc = false; + } + else // currently off + { + style |= flag; + rc = true; + } + + SetWindowStyleFlag(style); + + return rc; +} + +// ---------------------------------------------------------------------------- +// destruction +// ---------------------------------------------------------------------------- + +// common clean up +wxWindowBase::~wxWindowBase() +{ + wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") ); + + // FIXME if these 2 cases result from programming errors in the user code + // we should probably assert here instead of silently fixing them + + // Just in case the window has been Closed, but we're then deleting + // immediately: don't leave dangling pointers. + wxPendingDelete.DeleteObject(this); + + // Just in case we've loaded a top-level window via LoadNativeDialog but + // we weren't a dialog class + wxTopLevelWindows.DeleteObject((wxWindow*)this); + + // Any additional event handlers should be popped before the window is + // deleted as otherwise the last handler will be left with a dangling + // pointer to this window result in a difficult to diagnose crash later on. + wxASSERT_MSG( GetEventHandler() == this, + wxT("any pushed event handlers must have been removed") ); + +#if wxUSE_MENUS + // The associated popup menu can still be alive, disassociate from it in + // this case + if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this ) + wxCurrentPopupMenu->SetInvokingWindow(NULL); +#endif // wxUSE_MENUS + + wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") ); + + // notify the parent about this window destruction + if ( m_parent ) + m_parent->RemoveChild(this); + +#if wxUSE_CARET + delete m_caret; +#endif // wxUSE_CARET + +#if wxUSE_VALIDATORS + delete m_windowValidator; +#endif // wxUSE_VALIDATORS + +#if wxUSE_CONSTRAINTS + // Have to delete constraints/sizer FIRST otherwise sizers may try to look + // at deleted windows as they delete themselves. + DeleteRelatedConstraints(); + + if ( m_constraints ) + { + // This removes any dangling pointers to this window in other windows' + // constraintsInvolvedIn lists. + UnsetConstraints(m_constraints); + wxDELETE(m_constraints); + } +#endif // wxUSE_CONSTRAINTS + + if ( m_containingSizer ) + m_containingSizer->Detach( (wxWindow*)this ); + + delete m_windowSizer; + +#if wxUSE_DRAG_AND_DROP + delete m_dropTarget; +#endif // wxUSE_DRAG_AND_DROP + +#if wxUSE_TOOLTIPS + delete m_tooltip; +#endif // wxUSE_TOOLTIPS + +#if wxUSE_ACCESSIBILITY + delete m_accessible; +#endif + +#if wxUSE_HELP + // NB: this has to be called unconditionally, because we don't know + // whether this window has associated help text or not + wxHelpProvider *helpProvider = wxHelpProvider::Get(); + if ( helpProvider ) + helpProvider->RemoveHelp(this); +#endif +} + +bool wxWindowBase::IsBeingDeleted() const +{ + return m_isBeingDeleted || + (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted()); +} + +void wxWindowBase::SendDestroyEvent() +{ + if ( m_isBeingDeleted ) + { + // we could have been already called from a more derived class dtor, + // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call + // should be simply ignored + return; + } + + m_isBeingDeleted = true; + + wxWindowDestroyEvent event; + event.SetEventObject(this); + event.SetId(GetId()); + GetEventHandler()->ProcessEvent(event); +} + +bool wxWindowBase::Destroy() +{ + // If our handle is invalid, it means that this window has never been + // created, either because creating it failed or, more typically, because + // this wxWindow object was default-constructed and its Create() method had + // never been called. As we didn't send wxWindowCreateEvent in this case + // (which is sent after successful creation), don't send the matching + // wxWindowDestroyEvent neither. + if ( GetHandle() ) + SendDestroyEvent(); + + delete this; + + return true; +} + +bool wxWindowBase::Close(bool force) +{ + wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId); + event.SetEventObject(this); + event.SetCanVeto(!force); + + // return false if window wasn't closed because the application vetoed the + // close event + return HandleWindowEvent(event) && !event.GetVeto(); +} + +bool wxWindowBase::DestroyChildren() +{ + wxWindowList::compatibility_iterator node; + for ( ;; ) + { + // we iterate until the list becomes empty + node = GetChildren().GetFirst(); + if ( !node ) + break; + + wxWindow *child = node->GetData(); + + // note that we really want to delete it immediately so don't call the + // possible overridden Destroy() version which might not delete the + // child immediately resulting in problems with our (top level) child + // outliving its parent + child->wxWindowBase::Destroy(); + + wxASSERT_MSG( !GetChildren().Find(child), + wxT("child didn't remove itself using RemoveChild()") ); + } + + return true; +} + +// ---------------------------------------------------------------------------- +// size/position related methods +// ---------------------------------------------------------------------------- + +// centre the window with respect to its parent in either (or both) directions +void wxWindowBase::DoCentre(int dir) +{ + wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(), + wxT("this method only implements centering child windows") ); + + SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir)); +} + +// fits the window around the children +void wxWindowBase::Fit() +{ + SetSize(GetBestSize()); +} + +// fits virtual size (ie. scrolled area etc.) around children +void wxWindowBase::FitInside() +{ + SetVirtualSize( GetBestVirtualSize() ); +} + +// On Mac, scrollbars are explicitly children. +#if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__) +static bool wxHasRealChildren(const wxWindowBase* win) +{ + int realChildCount = 0; + + for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst(); + node; + node = node->GetNext() ) + { + wxWindow *win = node->GetData(); + if ( !win->IsTopLevel() && win->IsShown() +#if wxUSE_SCROLLBAR + && !wxDynamicCast(win, wxScrollBar) +#endif + ) + realChildCount ++; + } + return (realChildCount > 0); +} +#endif + +void wxWindowBase::InvalidateBestSize() +{ + m_bestSizeCache = wxDefaultSize; + + // parent's best size calculation may depend on its children's + // as long as child window we are in is not top level window itself + // (because the TLW size is never resized automatically) + // so let's invalidate it as well to be safe: + if (m_parent && !IsTopLevel()) + m_parent->InvalidateBestSize(); +} + +// return the size best suited for the current window +wxSize wxWindowBase::DoGetBestSize() const +{ + wxSize best; + + if ( m_windowSizer ) + { + best = m_windowSizer->GetMinSize(); + } +#if wxUSE_CONSTRAINTS + else if ( m_constraints ) + { + wxConstCast(this, wxWindowBase)->SatisfyConstraints(); + + // our minimal acceptable size is such that all our windows fit inside + int maxX = 0, + maxY = 0; + + for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + node; + node = node->GetNext() ) + { + wxLayoutConstraints *c = node->GetData()->GetConstraints(); + if ( !c ) + { + // it's not normal that we have an unconstrained child, but + // what can we do about it? + continue; + } + + int x = c->right.GetValue(), + y = c->bottom.GetValue(); + + if ( x > maxX ) + maxX = x; + + if ( y > maxY ) + maxY = y; + + // TODO: we must calculate the overlaps somehow, otherwise we + // will never return a size bigger than the current one :-( + } + + best = wxSize(maxX, maxY); + } +#endif // wxUSE_CONSTRAINTS + else if ( !GetChildren().empty() +#if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__) + && wxHasRealChildren(this) #endif + ) + { + // our minimal acceptable size is such that all our visible child + // windows fit inside + int maxX = 0, + maxY = 0; + + for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + node; + node = node->GetNext() ) + { + wxWindow *win = node->GetData(); + if ( win->IsTopLevel() + || !win->IsShown() +#if wxUSE_STATUSBAR + || wxDynamicCast(win, wxStatusBar) +#endif // wxUSE_STATUSBAR + ) + { + // dialogs and frames lie in different top level windows - + // don't deal with them here; as for the status bars, they + // don't lie in the client area at all + continue; + } + + int wx, wy, ww, wh; + win->GetPosition(&wx, &wy); + + // if the window hadn't been positioned yet, assume that it is in + // the origin + if ( wx == wxDefaultCoord ) + wx = 0; + if ( wy == wxDefaultCoord ) + wy = 0; + + win->GetSize(&ww, &wh); + if ( wx + ww > maxX ) + maxX = wx + ww; + if ( wy + wh > maxY ) + maxY = wy + wh; + } + + best = wxSize(maxX, maxY); + } + else // ! has children + { + wxSize size = GetMinSize(); + if ( !size.IsFullySpecified() ) + { + // if the window doesn't define its best size we assume that it can + // be arbitrarily small -- usually this is not the case, of course, + // but we have no way to know what the limit is, it should really + // override DoGetBestClientSize() itself to tell us + size.SetDefaults(wxSize(1, 1)); + } + + // return as-is, unadjusted by the client size difference. + return size; + } + + // Add any difference between size and client size + wxSize diff = GetSize() - GetClientSize(); + best.x += wxMax(0, diff.x); + best.y += wxMax(0, diff.y); + + return best; +} + +// helper of GetWindowBorderSize(): as many ports don't implement support for +// wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded +// fallbacks in this case +static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win) +{ + int rc = wxSystemSettings::GetMetric( + what, static_cast(const_cast(win))); + if ( rc == -1 ) + { + switch ( what ) + { + case wxSYS_BORDER_X: + case wxSYS_BORDER_Y: + // 2D border is by default 1 pixel wide + rc = 1; + break; + + case wxSYS_EDGE_X: + case wxSYS_EDGE_Y: + // 3D borders are by default 2 pixels + rc = 2; + break; + + default: + wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") ); + rc = 0; + } + } + + return rc; +} + +wxSize wxWindowBase::GetWindowBorderSize() const +{ + wxSize size; + + switch ( GetBorder() ) + { + case wxBORDER_NONE: + // nothing to do, size is already (0, 0) + break; + + case wxBORDER_SIMPLE: + case wxBORDER_STATIC: + size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this); + size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this); + break; + + case wxBORDER_SUNKEN: + case wxBORDER_RAISED: + size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this), + wxGetMetricOrDefault(wxSYS_BORDER_X, this)); + size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this), + wxGetMetricOrDefault(wxSYS_BORDER_Y, this)); + break; + + case wxBORDER_DOUBLE: + size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) + + wxGetMetricOrDefault(wxSYS_BORDER_X, this); + size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) + + wxGetMetricOrDefault(wxSYS_BORDER_Y, this); + break; + + default: + wxFAIL_MSG(wxT("Unknown border style.")); + break; + } + + // we have borders on both sides + return size*2; +} + +bool +wxWindowBase::InformFirstDirection(int direction, + int size, + int availableOtherDir) +{ + return GetSizer() && GetSizer()->InformFirstDirection(direction, + size, + availableOtherDir); +} + +wxSize wxWindowBase::GetEffectiveMinSize() const +{ + // merge the best size with the min size, giving priority to the min size + wxSize min = GetMinSize(); + + if (min.x == wxDefaultCoord || min.y == wxDefaultCoord) + { + wxSize best = GetBestSize(); + if (min.x == wxDefaultCoord) min.x = best.x; + if (min.y == wxDefaultCoord) min.y = best.y; } - } + + return min; } + +wxSize wxWindowBase::DoGetBorderSize() const +{ + // there is one case in which we can implement it for all ports easily + if ( GetBorder() == wxBORDER_NONE ) + return wxSize(0, 0); + + // otherwise use the difference between the real size and the client size + // as a fallback: notice that this is incorrect in general as client size + // also doesn't take the scrollbars into account + return GetSize() - GetClientSize(); +} + +wxSize wxWindowBase::GetBestSize() const +{ + if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() ) + return m_bestSizeCache; + + // call DoGetBestClientSize() first, if a derived class overrides it wants + // it to be used + wxSize size = DoGetBestClientSize(); + if ( size != wxDefaultSize ) + size += DoGetBorderSize(); + else + size = DoGetBestSize(); + + // Ensure that the best size is at least as large as min size. + size.IncTo(GetMinSize()); + + // And not larger than max size. + size.DecToIfSpecified(GetMaxSize()); + + // Finally cache result and return. + CacheBestSize(size); + return size; +} + +int wxWindowBase::GetBestHeight(int width) const +{ + const int height = DoGetBestClientHeight(width); + + return height == wxDefaultCoord + ? GetBestSize().y + : height + DoGetBorderSize().y; +} + +int wxWindowBase::GetBestWidth(int height) const +{ + const int width = DoGetBestClientWidth(height); + + return width == wxDefaultCoord + ? GetBestSize().x + : width + DoGetBorderSize().x; +} + +void wxWindowBase::SetMinSize(const wxSize& minSize) +{ + m_minWidth = minSize.x; + m_minHeight = minSize.y; + + InvalidateBestSize(); +} + +void wxWindowBase::SetMaxSize(const wxSize& maxSize) +{ + m_maxWidth = maxSize.x; + m_maxHeight = maxSize.y; + + InvalidateBestSize(); +} + +void wxWindowBase::SetInitialSize(const wxSize& size) +{ + // Set the min size to the size passed in. This will usually either be + // wxDefaultSize or the size passed to this window's ctor/Create function. + SetMinSize(size); + + // Merge the size with the best size if needed + wxSize best = GetEffectiveMinSize(); + + // If the current size doesn't match then change it + if (GetSize() != best) + SetSize(best); +} + + +// by default the origin is not shifted +wxPoint wxWindowBase::GetClientAreaOrigin() const +{ + return wxPoint(0,0); +} + +wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const +{ + const wxSize diff(GetSize() - GetClientSize()); + + return wxSize(size.x == -1 ? -1 : size.x + diff.x, + size.y == -1 ? -1 : size.y + diff.y); +} + +wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const +{ + const wxSize diff(GetSize() - GetClientSize()); + + return wxSize(size.x == -1 ? -1 : size.x - diff.x, + size.y == -1 ? -1 : size.y - diff.y); +} + +void wxWindowBase::SetWindowVariant( wxWindowVariant variant ) +{ + if ( m_windowVariant != variant ) + { + m_windowVariant = variant; + + DoSetWindowVariant(variant); + } +} + +void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant ) +{ + // adjust the font height to correspond to our new variant (notice that + // we're only called if something really changed) + wxFont font = GetFont(); + int size = font.GetPointSize(); + switch ( variant ) + { + case wxWINDOW_VARIANT_NORMAL: + break; + + case wxWINDOW_VARIANT_SMALL: + size = wxRound(size * 3.0 / 4.0); + break; + + case wxWINDOW_VARIANT_MINI: + size = wxRound(size * 2.0 / 3.0); + break; + + case wxWINDOW_VARIANT_LARGE: + size = wxRound(size * 5.0 / 4.0); + break; + + default: + wxFAIL_MSG(wxT("unexpected window variant")); + break; + } + + font.SetPointSize(size); + SetFont(font); +} + +void wxWindowBase::DoSetSizeHints( int minW, int minH, + int maxW, int maxH, + int WXUNUSED(incW), int WXUNUSED(incH) ) +{ + wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) && + (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH), + wxT("min width/height must be less than max width/height!") ); + + m_minWidth = minW; + m_maxWidth = maxW; + m_minHeight = minH; + m_maxHeight = maxH; +} + + +#if WXWIN_COMPATIBILITY_2_8 +void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH), + int WXUNUSED(maxW), int WXUNUSED(maxH)) +{ +} + +void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize), + const wxSize& WXUNUSED(maxsize)) +{ +} +#endif // WXWIN_COMPATIBILITY_2_8 + +void wxWindowBase::DoSetVirtualSize( int x, int y ) +{ + m_virtualSize = wxSize(x, y); +} + +wxSize wxWindowBase::DoGetVirtualSize() const +{ + // we should use the entire client area so if it is greater than our + // virtual size, expand it to fit (otherwise if the window is big enough we + // wouldn't be using parts of it) + wxSize size = GetClientSize(); + if ( m_virtualSize.x > size.x ) + size.x = m_virtualSize.x; + + if ( m_virtualSize.y >= size.y ) + size.y = m_virtualSize.y; + + return size; +} + +void wxWindowBase::DoGetScreenPosition(int *x, int *y) const +{ + // screen position is the same as (0, 0) in client coords for non TLWs (and + // TLWs override this method) + if ( x ) + *x = 0; + if ( y ) + *y = 0; + + ClientToScreen(x, y); +} + +void wxWindowBase::SendSizeEvent(int flags) +{ + wxSizeEvent event(GetSize(), GetId()); + event.SetEventObject(this); + if ( flags & wxSEND_EVENT_POST ) + wxPostEvent(GetEventHandler(), event); + else + HandleWindowEvent(event); +} + +void wxWindowBase::SendSizeEventToParent(int flags) +{ + wxWindow * const parent = GetParent(); + if ( parent && !parent->IsBeingDeleted() ) + parent->SendSizeEvent(flags); +} + +bool wxWindowBase::HasScrollbar(int orient) const +{ + // if scrolling in the given direction is disabled, we can't have the + // corresponding scrollbar no matter what + if ( !CanScroll(orient) ) + return false; + + const wxSize sizeVirt = GetVirtualSize(); + const wxSize sizeClient = GetClientSize(); + + return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x + : sizeVirt.y > sizeClient.y; +} + +// ---------------------------------------------------------------------------- +// show/hide/enable/disable the window +// ---------------------------------------------------------------------------- + +bool wxWindowBase::Show(bool show) +{ + if ( show != m_isShown ) + { + m_isShown = show; + + return true; + } + else + { + return false; + } +} + +bool wxWindowBase::IsEnabled() const +{ + return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled()); +} + +void wxWindowBase::NotifyWindowOnEnableChange(bool enabled) +{ + // Under some platforms there is no need to update the window state + // explicitly, it will become disabled when its parent is. On other ones we + // do need to disable all windows recursively though. +#ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT + DoEnable(enabled); +#endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT) + + OnEnabled(enabled); + + // Disabling a top level window is typically done when showing a modal + // dialog and we don't need to disable its children in this case, they will + // be logically disabled anyhow (i.e. their IsEnabled() will return false) + // and the TLW won't accept any input for them. Moreover, explicitly + // disabling them would look ugly as the entire TLW would be greyed out + // whenever a modal dialog is shown and no native applications under any + // platform behave like this. + if ( IsTopLevel() && !enabled ) + return; + + // When disabling (or enabling back) a non-TLW window we need to + // recursively propagate the change of the state to its children, otherwise + // they would still show as enabled even though they wouldn't actually + // accept any input (at least under MSW where children don't accept input + // if any of the windows in their parent chain is enabled). + // + // Notice that we must do this even for wxHAS_NATIVE_ENABLED_MANAGEMENT + // platforms as we still need to call the children OnEnabled() recursively. + for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + node; + node = node->GetNext() ) + { + wxWindowBase * const child = node->GetData(); + if ( !child->IsTopLevel() && child->IsThisEnabled() ) + child->NotifyWindowOnEnableChange(enabled); + } +} + +bool wxWindowBase::Enable(bool enable) +{ + if ( enable == IsThisEnabled() ) + return false; + + m_isEnabled = enable; + + // If we call DoEnable() from NotifyWindowOnEnableChange(), we don't need + // to do it from here. +#ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT + DoEnable(enable); +#endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT) + + NotifyWindowOnEnableChange(enable); + + return true; +} + +bool wxWindowBase::IsShownOnScreen() const +{ + // A window is shown on screen if it itself is shown and so are all its + // parents. But if a window is toplevel one, then its always visible on + // screen if IsShown() returns true, even if it has a hidden parent. + return IsShown() && + (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen()); +} + +// ---------------------------------------------------------------------------- +// RTTI +// ---------------------------------------------------------------------------- + +bool wxWindowBase::IsTopLevel() const +{ + return false; +} + +// ---------------------------------------------------------------------------- +// Freeze/Thaw +// ---------------------------------------------------------------------------- + +void wxWindowBase::Freeze() +{ + if ( !m_freezeCount++ ) + { + // physically freeze this window: + DoFreeze(); + + // and recursively freeze all children: + for ( wxWindowList::iterator i = GetChildren().begin(); + i != GetChildren().end(); ++i ) + { + wxWindow *child = *i; + if ( child->IsTopLevel() ) + continue; + + child->Freeze(); + } + } +} + +void wxWindowBase::Thaw() +{ + wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" ); + + if ( !--m_freezeCount ) + { + // recursively thaw all children: + for ( wxWindowList::iterator i = GetChildren().begin(); + i != GetChildren().end(); ++i ) + { + wxWindow *child = *i; + if ( child->IsTopLevel() ) + continue; + + child->Thaw(); + } + + // physically thaw this window: + DoThaw(); + } +} + +// ---------------------------------------------------------------------------- +// Dealing with parents and children. +// ---------------------------------------------------------------------------- + +bool wxWindowBase::IsDescendant(wxWindowBase* win) const +{ + // Iterate until we find this window in the parent chain or exhaust it. + while ( win ) + { + if ( win == this ) + return true; + + // Stop iterating on reaching the top level window boundary. + if ( win->IsTopLevel() ) + break; + + win = win->GetParent(); + } + + return false; +} + +void wxWindowBase::AddChild(wxWindowBase *child) +{ + wxCHECK_RET( child, wxT("can't add a NULL child") ); + + // this should never happen and it will lead to a crash later if it does + // because RemoveChild() will remove only one node from the children list + // and the other(s) one(s) will be left with dangling pointers in them + wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") ); + + GetChildren().Append((wxWindow*)child); + child->SetParent(this); + + // adding a child while frozen will assert when thawed, so freeze it as if + // it had been already present when we were frozen + if ( IsFrozen() && !child->IsTopLevel() ) + child->Freeze(); +} + +void wxWindowBase::RemoveChild(wxWindowBase *child) +{ + wxCHECK_RET( child, wxT("can't remove a NULL child") ); + + // removing a child while frozen may result in permanently frozen window + // if used e.g. from Reparent(), so thaw it + // + // NB: IsTopLevel() doesn't return true any more when a TLW child is being + // removed from its ~wxWindowBase, so check for IsBeingDeleted() too + if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() ) + child->Thaw(); + + GetChildren().DeleteObject((wxWindow *)child); + child->SetParent(NULL); +} + +void wxWindowBase::SetParent(wxWindowBase *parent) +{ + // This assert catches typos which may result in using "this" instead of + // "parent" when creating the window. This doesn't happen often but when it + // does the results are unpleasant because the program typically just + // crashes when due to a stack overflow or something similar and this + // assert doesn't cost much (OTOH doing a more general check that the + // parent is not one of our children would be more expensive and probably + // not worth it). + wxASSERT_MSG( parent != this, wxS("Can't use window as its own parent") ); + + m_parent = (wxWindow *)parent; +} + +bool wxWindowBase::Reparent(wxWindowBase *newParent) +{ + wxWindow *oldParent = GetParent(); + if ( newParent == oldParent ) + { + // nothing done + return false; + } + + const bool oldEnabledState = IsEnabled(); + + // unlink this window from the existing parent. + if ( oldParent ) + { + oldParent->RemoveChild(this); + } + else + { + wxTopLevelWindows.DeleteObject((wxWindow *)this); + } + + // add it to the new one + if ( newParent ) + { + newParent->AddChild(this); + } + else + { + wxTopLevelWindows.Append((wxWindow *)this); + } + + // We need to notify window (and its subwindows) if by changing the parent + // we also change our enabled/disabled status. + const bool newEnabledState = IsEnabled(); + if ( newEnabledState != oldEnabledState ) + { + NotifyWindowOnEnableChange(newEnabledState); + } + + return true; +} + +// ---------------------------------------------------------------------------- +// event handler stuff +// ---------------------------------------------------------------------------- + +void wxWindowBase::SetEventHandler(wxEvtHandler *handler) +{ + wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called"); + + m_eventHandler = handler; +} + +void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler)) +{ + // disable wxEvtHandler chain mechanism for wxWindows: + // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one + + wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain"); +} +void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler)) +{ + // we can't simply wxFAIL here as in SetNextHandler: in fact the last + // handler of our stack when is destroyed will be Unlink()ed and thus + // will call this function to update the pointer of this window... + + //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain"); +} + +void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush) +{ + wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" ); + + // the new handler is going to be part of the wxWindow stack of event handlers: + // it can't be part also of an event handler double-linked chain: + wxASSERT_MSG(handlerToPush->IsUnlinked(), + "The handler being pushed in the wxWindow stack shouldn't be part of " + "a wxEvtHandler chain; call Unlink() on it first"); + + wxEvtHandler *handlerOld = GetEventHandler(); + wxCHECK_RET( handlerOld, "an old event handler is NULL?" ); + + // now use wxEvtHandler double-linked list to implement a stack: + handlerToPush->SetNextHandler(handlerOld); + + if (handlerOld != this) + handlerOld->SetPreviousHandler(handlerToPush); + + SetEventHandler(handlerToPush); + +#if wxDEBUG_LEVEL + // final checks of the operations done above: + wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL, + "the first handler of the wxWindow stack should " + "have no previous handlers set" ); + wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL, + "the first handler of the wxWindow stack should " + "have non-NULL next handler" ); + + wxEvtHandler* pLast = handlerToPush; + while ( pLast && pLast != this ) + pLast = pLast->GetNextHandler(); + wxASSERT_MSG( pLast->GetNextHandler() == NULL, + "the last handler of the wxWindow stack should " + "have this window as next handler" ); +#endif // wxDEBUG_LEVEL +} + +wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler) +{ + // we need to pop the wxWindow stack, i.e. we need to remove the first handler + + wxEvtHandler *firstHandler = GetEventHandler(); + wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" ); + wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" ); + wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL, + "the first handler of the wxWindow stack should have no previous handlers set" ); + + wxEvtHandler *secondHandler = firstHandler->GetNextHandler(); + wxCHECK_MSG( secondHandler != NULL, NULL, + "the first handler of the wxWindow stack should have non-NULL next handler" ); + + firstHandler->SetNextHandler(NULL); + + // It is harmless but useless to unset the previous handler of the window + // itself as it's always NULL anyhow, so don't do this. + if ( secondHandler != this ) + secondHandler->SetPreviousHandler(NULL); + + // now firstHandler is completely unlinked; set secondHandler as the new window event handler + SetEventHandler(secondHandler); + + if ( deleteHandler ) + { + wxDELETE(firstHandler); + } + + return firstHandler; +} + +bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove) +{ + wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" ); + wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" ); + + if (handlerToRemove == GetEventHandler()) + { + // removing the first event handler is equivalent to "popping" the stack + PopEventHandler(false); + return true; + } + + // NOTE: the wxWindow event handler list is always terminated with "this" handler + wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler(); + while ( handlerCur != this && handlerCur ) + { + wxEvtHandler *handlerNext = handlerCur->GetNextHandler(); + + if ( handlerCur == handlerToRemove ) + { + handlerCur->Unlink(); + + wxASSERT_MSG( handlerCur != GetEventHandler(), + "the case Remove == Pop should was already handled" ); + return true; + } + + handlerCur = handlerNext; + } + + wxFAIL_MSG( wxT("where has the event handler gone?") ); + + return false; +} + +bool wxWindowBase::HandleWindowEvent(wxEvent& event) const +{ + // SafelyProcessEvent() will handle exceptions nicely + return GetEventHandler()->SafelyProcessEvent(event); +} + +// ---------------------------------------------------------------------------- +// colours, fonts &c +// ---------------------------------------------------------------------------- + +void wxWindowBase::InheritAttributes() +{ + const wxWindowBase * const parent = GetParent(); + if ( !parent ) + return; + + // we only inherit attributes which had been explicitly set for the parent + // which ensures that this only happens if the user really wants it and + // not by default which wouldn't make any sense in modern GUIs where the + // controls don't all use the same fonts (nor colours) + if ( parent->m_inheritFont && !m_hasFont ) + SetFont(parent->GetFont()); + + // in addition, there is a possibility to explicitly forbid inheriting + // colours at each class level by overriding ShouldInheritColours() + if ( ShouldInheritColours() ) + { + if ( parent->m_inheritFgCol && !m_hasFgCol ) + SetForegroundColour(parent->GetForegroundColour()); + + // inheriting (solid) background colour is wrong as it totally breaks + // any kind of themed backgrounds + // + // instead, the controls should use the same background as their parent + // (ideally by not drawing it at all) +#if 0 + if ( parent->m_inheritBgCol && !m_hasBgCol ) + SetBackgroundColour(parent->GetBackgroundColour()); +#endif // 0 + } +} + +/* static */ wxVisualAttributes +wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant)) +{ + // it is important to return valid values for all attributes from here, + // GetXXX() below rely on this + wxVisualAttributes attrs; + attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT); + attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT); + + // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of + // the usual background colour than wxSYS_COLOUR_BTNFACE. + // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background + // colour on other platforms. + +#if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__)) + attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); +#else + attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE); +#endif + return attrs; +} + +wxColour wxWindowBase::GetBackgroundColour() const +{ + if ( !m_backgroundColour.IsOk() ) + { + wxASSERT_MSG( !m_hasBgCol, wxT("we have invalid explicit bg colour?") ); + + // get our default background colour + wxColour colBg = GetDefaultAttributes().colBg; + + // we must return some valid colour to avoid redoing this every time + // and also to avoid surprising the applications written for older + // wxWidgets versions where GetBackgroundColour() always returned + // something -- so give them something even if it doesn't make sense + // for this window (e.g. it has a themed background) + if ( !colBg.IsOk() ) + colBg = GetClassDefaultAttributes().colBg; + + return colBg; + } + else + return m_backgroundColour; +} + +wxColour wxWindowBase::GetForegroundColour() const +{ + // logic is the same as above + if ( !m_hasFgCol && !m_foregroundColour.IsOk() ) + { + wxColour colFg = GetDefaultAttributes().colFg; + + if ( !colFg.IsOk() ) + colFg = GetClassDefaultAttributes().colFg; + + return colFg; + } + else + return m_foregroundColour; +} + +bool wxWindowBase::SetBackgroundStyle(wxBackgroundStyle style) +{ + // The checks below shouldn't be triggered if we're not really changing the + // style. + if ( style == m_backgroundStyle ) + return true; + + // Transparent background style can be only set before creation because of + // wxGTK limitation. + wxCHECK_MSG( (style != wxBG_STYLE_TRANSPARENT) || !GetHandle(), + false, + "wxBG_STYLE_TRANSPARENT style can only be set before " + "Create()-ing the window." ); + + // And once it is set, wxBG_STYLE_TRANSPARENT can't be unset. + wxCHECK_MSG( (m_backgroundStyle != wxBG_STYLE_TRANSPARENT) || + (style == wxBG_STYLE_TRANSPARENT), + false, + "wxBG_STYLE_TRANSPARENT can't be unset once it was set." ); + + m_backgroundStyle = style; + + return true; +} + +bool wxWindowBase::IsTransparentBackgroundSupported(wxString *reason) const +{ + if ( reason ) + *reason = _("This platform does not support background transparency."); + + return false; +} + +bool wxWindowBase::SetBackgroundColour( const wxColour &colour ) +{ + if ( colour == m_backgroundColour ) + return false; + + m_hasBgCol = colour.IsOk(); + + m_inheritBgCol = m_hasBgCol; + m_backgroundColour = colour; + SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.IsOk() ); + return true; +} + +bool wxWindowBase::SetForegroundColour( const wxColour &colour ) +{ + if (colour == m_foregroundColour ) + return false; + + m_hasFgCol = colour.IsOk(); + m_inheritFgCol = m_hasFgCol; + m_foregroundColour = colour; + SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.IsOk() ); + return true; +} + +bool wxWindowBase::SetCursor(const wxCursor& cursor) +{ + // setting an invalid cursor is ok, it means that we don't have any special + // cursor + if ( m_cursor.IsSameAs(cursor) ) + { + // no change + return false; + } + + m_cursor = cursor; + + return true; +} + +wxFont wxWindowBase::GetFont() const +{ + // logic is the same as in GetBackgroundColour() + if ( !m_font.IsOk() ) + { + wxASSERT_MSG( !m_hasFont, wxT("we have invalid explicit font?") ); + + wxFont font = GetDefaultAttributes().font; + if ( !font.IsOk() ) + font = GetClassDefaultAttributes().font; + + return font; + } + else + return m_font; +} + +bool wxWindowBase::SetFont(const wxFont& font) +{ + if ( font == m_font ) + { + // no change + return false; + } + + m_font = font; + m_hasFont = font.IsOk(); + m_inheritFont = m_hasFont; + + InvalidateBestSize(); + + return true; +} + +#if wxUSE_PALETTE + +void wxWindowBase::SetPalette(const wxPalette& pal) +{ + m_hasCustomPalette = true; + m_palette = pal; + + // VZ: can anyone explain me what do we do here? + wxWindowDC d((wxWindow *) this); + d.SetPalette(pal); +} + +wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const +{ + wxWindow *win = (wxWindow *)this; + while ( win && !win->HasCustomPalette() ) + { + win = win->GetParent(); + } + + return win; +} + +#endif // wxUSE_PALETTE + +#if wxUSE_CARET +void wxWindowBase::SetCaret(wxCaret *caret) +{ + if ( m_caret ) + { + delete m_caret; + } + + m_caret = caret; + + if ( m_caret ) + { + wxASSERT_MSG( m_caret->GetWindow() == this, + wxT("caret should be created associated to this window") ); + } +} +#endif // wxUSE_CARET + +#if wxUSE_VALIDATORS +// ---------------------------------------------------------------------------- +// validators +// ---------------------------------------------------------------------------- + +void wxWindowBase::SetValidator(const wxValidator& validator) +{ + if ( m_windowValidator ) + delete m_windowValidator; + + m_windowValidator = (wxValidator *)validator.Clone(); + + if ( m_windowValidator ) + m_windowValidator->SetWindow(this); +} +#endif // wxUSE_VALIDATORS + +// ---------------------------------------------------------------------------- +// update region stuff +// ---------------------------------------------------------------------------- + +wxRect wxWindowBase::GetUpdateClientRect() const +{ + wxRegion rgnUpdate = GetUpdateRegion(); + rgnUpdate.Intersect(GetClientRect()); + wxRect rectUpdate = rgnUpdate.GetBox(); + wxPoint ptOrigin = GetClientAreaOrigin(); + rectUpdate.x -= ptOrigin.x; + rectUpdate.y -= ptOrigin.y; + + return rectUpdate; +} + +bool wxWindowBase::DoIsExposed(int x, int y) const +{ + return m_updateRegion.Contains(x, y) != wxOutRegion; +} + +bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const +{ + return m_updateRegion.Contains(x, y, w, h) != wxOutRegion; +} + +void wxWindowBase::ClearBackground() +{ + // wxGTK uses its own version, no need to add never used code +#ifndef __WXGTK__ + wxClientDC dc((wxWindow *)this); + wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID); + dc.SetBackground(brush); + dc.Clear(); +#endif // __WXGTK__ +} + +// ---------------------------------------------------------------------------- +// find child window by id or name +// ---------------------------------------------------------------------------- + +wxWindow *wxWindowBase::FindWindow(long id) const +{ + if ( id == m_windowId ) + return (wxWindow *)this; + + wxWindowBase *res = NULL; + wxWindowList::compatibility_iterator node; + for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() ) + { + wxWindowBase *child = node->GetData(); + res = child->FindWindow( id ); + } + + return (wxWindow *)res; +} + +wxWindow *wxWindowBase::FindWindow(const wxString& name) const +{ + if ( name == m_windowName ) + return (wxWindow *)this; + + wxWindowBase *res = NULL; + wxWindowList::compatibility_iterator node; + for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() ) + { + wxWindow *child = node->GetData(); + res = child->FindWindow(name); + } + + return (wxWindow *)res; +} + + +// find any window by id or name or label: If parent is non-NULL, look through +// children for a label or title matching the specified string. If NULL, look +// through all top-level windows. +// +// to avoid duplicating code we reuse the same helper function but with +// different comparators + +typedef bool (*wxFindWindowCmp)(const wxWindow *win, + const wxString& label, long id); + +static +bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label, + long WXUNUSED(id)) +{ + return win->GetLabel() == label; +} + +static +bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label, + long WXUNUSED(id)) +{ + return win->GetName() == label; +} + +static +bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label), + long id) +{ + return win->GetId() == id; +} + +// recursive helper for the FindWindowByXXX() functions +static +wxWindow *wxFindWindowRecursively(const wxWindow *parent, + const wxString& label, + long id, + wxFindWindowCmp cmp) +{ + if ( parent ) + { + // see if this is the one we're looking for + if ( (*cmp)(parent, label, id) ) + return (wxWindow *)parent; + + // It wasn't, so check all its children + for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst(); + node; + node = node->GetNext() ) + { + // recursively check each child + wxWindow *win = (wxWindow *)node->GetData(); + wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp); + if (retwin) + return retwin; + } + } + + // Not found + return NULL; +} + +// helper for FindWindowByXXX() +static +wxWindow *wxFindWindowHelper(const wxWindow *parent, + const wxString& label, + long id, + wxFindWindowCmp cmp) +{ + if ( parent ) + { + // just check parent and all its children + return wxFindWindowRecursively(parent, label, id, cmp); + } + + // start at very top of wx's windows + for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst(); + node; + node = node->GetNext() ) + { + // recursively check each window & its children + wxWindow *win = node->GetData(); + wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp); + if (retwin) + return retwin; + } + + return NULL; +} + +/* static */ +wxWindow * +wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent) +{ + return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels); +} + +/* static */ +wxWindow * +wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent) +{ + wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames); + + if ( !win ) + { + // fall back to the label + win = FindWindowByLabel(title, parent); + } + + return win; +} + +/* static */ +wxWindow * +wxWindowBase::FindWindowById( long id, const wxWindow* parent ) +{ + return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds); +} + +// ---------------------------------------------------------------------------- +// dialog oriented functions +// ---------------------------------------------------------------------------- + +#if WXWIN_COMPATIBILITY_2_8 +void wxWindowBase::MakeModal(bool modal) +{ + // Disable all other windows + if ( IsTopLevel() ) + { + wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst(); + while (node) + { + wxWindow *win = node->GetData(); + if (win != this) + win->Enable(!modal); + + node = node->GetNext(); + } + } +} +#endif // WXWIN_COMPATIBILITY_2_8 + +#if wxUSE_VALIDATORS + +namespace +{ + +// This class encapsulates possibly recursive iteration on window children done +// by Validate() and TransferData{To,From}Window() and allows to avoid code +// duplication in all three functions. +class ValidationTraverserBase +{ +public: + wxEXPLICIT ValidationTraverserBase(wxWindowBase* win) + : m_win(static_cast(win)) + { + } + + // Traverse all the direct children calling OnDo() on them and also all + // grandchildren if wxWS_EX_VALIDATE_RECURSIVELY is used, calling + // OnRecurse() for them. + bool DoForAllChildren() + { + const bool recurse = m_win->HasExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY); + + wxWindowList& children = m_win->GetChildren(); + for ( wxWindowList::iterator i = children.begin(); + i != children.end(); + ++i ) + { + wxWindow* const child = static_cast(*i); + wxValidator* const validator = child->GetValidator(); + if ( validator && !OnDo(validator) ) + { + return false; + } + + // Notice that validation should never recurse into top level + // children, e.g. some other dialog which might happen to be + // currently shown. + if ( recurse && !child->IsTopLevel() && !OnRecurse(child) ) + { + return false; + } + } + + return true; + } + +protected: + // Called for each child, validator is guaranteed to be non-NULL. + virtual bool OnDo(wxValidator* validator) = 0; + + // Called for each child if we need to recurse into its children. + virtual bool OnRecurse(wxWindow* child) = 0; + + + // The window whose children we're traversing. + wxWindow* const m_win; + + wxDECLARE_NO_COPY_CLASS(ValidationTraverserBase); +}; + +} // anonymous namespace + +#endif // wxUSE_VALIDATORS + +bool wxWindowBase::Validate() +{ +#if wxUSE_VALIDATORS + class ValidateTraverser : public ValidationTraverserBase + { + public: + wxEXPLICIT ValidateTraverser(wxWindowBase* win) + : ValidationTraverserBase(win) + { + } + + virtual bool OnDo(wxValidator* validator) + { + return validator->Validate(m_win); + } + + virtual bool OnRecurse(wxWindow* child) + { + return child->Validate(); + } + }; + + return ValidateTraverser(this).DoForAllChildren(); +#else // !wxUSE_VALIDATORS + return true; +#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS +} + +bool wxWindowBase::TransferDataToWindow() +{ +#if wxUSE_VALIDATORS + class DataToWindowTraverser : public ValidationTraverserBase + { + public: + wxEXPLICIT DataToWindowTraverser(wxWindowBase* win) + : ValidationTraverserBase(win) + { + } + + virtual bool OnDo(wxValidator* validator) + { + if ( !validator->TransferToWindow() ) + { + wxLogWarning(_("Could not transfer data to window")); +#if wxUSE_LOG + wxLog::FlushActive(); +#endif // wxUSE_LOG + + return false; + } + + return true; + } + + virtual bool OnRecurse(wxWindow* child) + { + return child->TransferDataToWindow(); + } + }; + + return DataToWindowTraverser(this).DoForAllChildren(); +#else // !wxUSE_VALIDATORS + return true; +#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS +} + +bool wxWindowBase::TransferDataFromWindow() +{ +#if wxUSE_VALIDATORS + class DataFromWindowTraverser : public ValidationTraverserBase + { + public: + DataFromWindowTraverser(wxWindowBase* win) + : ValidationTraverserBase(win) + { + } + + virtual bool OnDo(wxValidator* validator) + { + return validator->TransferFromWindow(); + } + + virtual bool OnRecurse(wxWindow* child) + { + return child->TransferDataFromWindow(); + } + }; + + return DataFromWindowTraverser(this).DoForAllChildren(); +#else // !wxUSE_VALIDATORS + return true; +#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS +} + +void wxWindowBase::InitDialog() +{ + wxInitDialogEvent event(GetId()); + event.SetEventObject( this ); + GetEventHandler()->ProcessEvent(event); +} + +// ---------------------------------------------------------------------------- +// context-sensitive help support +// ---------------------------------------------------------------------------- + +#if wxUSE_HELP + +// associate this help text with this window +void wxWindowBase::SetHelpText(const wxString& text) +{ + wxHelpProvider *helpProvider = wxHelpProvider::Get(); + if ( helpProvider ) + { + helpProvider->AddHelp(this, text); + } +} + +#if WXWIN_COMPATIBILITY_2_8 +// associate this help text with all windows with the same id as this +// one +void wxWindowBase::SetHelpTextForId(const wxString& text) +{ + wxHelpProvider *helpProvider = wxHelpProvider::Get(); + if ( helpProvider ) + { + helpProvider->AddHelp(GetId(), text); + } +} +#endif // WXWIN_COMPATIBILITY_2_8 + +// get the help string associated with this window (may be empty) +// default implementation forwards calls to the help provider +wxString +wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt), + wxHelpEvent::Origin WXUNUSED(origin)) const +{ + wxString text; + wxHelpProvider *helpProvider = wxHelpProvider::Get(); + if ( helpProvider ) + { + text = helpProvider->GetHelp(this); + } + + return text; +} + +// show help for this window +void wxWindowBase::OnHelp(wxHelpEvent& event) +{ + wxHelpProvider *helpProvider = wxHelpProvider::Get(); + if ( helpProvider ) + { + wxPoint pos = event.GetPosition(); + const wxHelpEvent::Origin origin = event.GetOrigin(); + if ( origin == wxHelpEvent::Origin_Keyboard ) + { + // if the help event was generated from keyboard it shouldn't + // appear at the mouse position (which is still the only position + // associated with help event) if the mouse is far away, although + // we still do use the mouse position if it's over the window + // because we suppose the user looks approximately at the mouse + // already and so it would be more convenient than showing tooltip + // at some arbitrary position which can be quite far from it + const wxRect rectClient = GetClientRect(); + if ( !rectClient.Contains(ScreenToClient(pos)) ) + { + // position help slightly under and to the right of this window + pos = ClientToScreen(wxPoint( + 2*GetCharWidth(), + rectClient.height + GetCharHeight() + )); + } + } + + if ( helpProvider->ShowHelpAtPoint(this, pos, origin) ) + { + // skip the event.Skip() below + return; + } + } + + event.Skip(); +} + +#endif // wxUSE_HELP + +// ---------------------------------------------------------------------------- +// tooltips +// ---------------------------------------------------------------------------- + +#if wxUSE_TOOLTIPS + +wxString wxWindowBase::GetToolTipText() const +{ + return m_tooltip ? m_tooltip->GetTip() : wxString(); +} + +void wxWindowBase::SetToolTip( const wxString &tip ) +{ + // don't create the new tooltip if we already have one + if ( m_tooltip ) + { + m_tooltip->SetTip( tip ); + } + else + { + SetToolTip( new wxToolTip( tip ) ); + } + + // setting empty tooltip text does not remove the tooltip any more - use + // SetToolTip(NULL) for this +} + +void wxWindowBase::DoSetToolTip(wxToolTip *tooltip) +{ + if ( m_tooltip != tooltip ) + { + if ( m_tooltip ) + delete m_tooltip; + + m_tooltip = tooltip; + } +} + +bool wxWindowBase::CopyToolTip(wxToolTip *tip) +{ + SetToolTip(tip ? new wxToolTip(tip->GetTip()) : NULL); + + return tip != NULL; +} + +#endif // wxUSE_TOOLTIPS + +// ---------------------------------------------------------------------------- +// constraints and sizers +// ---------------------------------------------------------------------------- + +#if wxUSE_CONSTRAINTS + +void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints ) +{ + if ( m_constraints ) + { + UnsetConstraints(m_constraints); + delete m_constraints; + } + m_constraints = constraints; + if ( m_constraints ) + { + // Make sure other windows know they're part of a 'meaningful relationship' + if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) ) + m_constraints->left.GetOtherWindow()->AddConstraintReference(this); + if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) ) + m_constraints->top.GetOtherWindow()->AddConstraintReference(this); + if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) ) + m_constraints->right.GetOtherWindow()->AddConstraintReference(this); + if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) ) + m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this); + if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) ) + m_constraints->width.GetOtherWindow()->AddConstraintReference(this); + if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) ) + m_constraints->height.GetOtherWindow()->AddConstraintReference(this); + if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) ) + m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this); + if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) ) + m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this); + } +} + +// This removes any dangling pointers to this window in other windows' +// constraintsInvolvedIn lists. +void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c) +{ + if ( c ) + { + if ( c->left.GetOtherWindow() && (c->left.GetOtherWindow() != this) ) + c->left.GetOtherWindow()->RemoveConstraintReference(this); + if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) ) + c->top.GetOtherWindow()->RemoveConstraintReference(this); + if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) ) + c->right.GetOtherWindow()->RemoveConstraintReference(this); + if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) ) + c->bottom.GetOtherWindow()->RemoveConstraintReference(this); + if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) ) + c->width.GetOtherWindow()->RemoveConstraintReference(this); + if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) ) + c->height.GetOtherWindow()->RemoveConstraintReference(this); + if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) ) + c->centreX.GetOtherWindow()->RemoveConstraintReference(this); + if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) ) + c->centreY.GetOtherWindow()->RemoveConstraintReference(this); + } +} + +// Back-pointer to other windows we're involved with, so if we delete this +// window, we must delete any constraints we're involved with. +void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin) +{ + if ( !m_constraintsInvolvedIn ) + m_constraintsInvolvedIn = new wxWindowList; + if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) ) + m_constraintsInvolvedIn->Append((wxWindow *)otherWin); +} + +// REMOVE back-pointer to other windows we're involved with. +void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin) +{ + if ( m_constraintsInvolvedIn ) + m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin); +} + +// Reset any constraints that mention this window +void wxWindowBase::DeleteRelatedConstraints() +{ + if ( m_constraintsInvolvedIn ) + { + wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst(); + while (node) + { + wxWindow *win = node->GetData(); + wxLayoutConstraints *constr = win->GetConstraints(); + + // Reset any constraints involving this window + if ( constr ) + { + constr->left.ResetIfWin(this); + constr->top.ResetIfWin(this); + constr->right.ResetIfWin(this); + constr->bottom.ResetIfWin(this); + constr->width.ResetIfWin(this); + constr->height.ResetIfWin(this); + constr->centreX.ResetIfWin(this); + constr->centreY.ResetIfWin(this); + } + + wxWindowList::compatibility_iterator next = node->GetNext(); + m_constraintsInvolvedIn->Erase(node); + node = next; + } + + wxDELETE(m_constraintsInvolvedIn); + } +} + +#endif // wxUSE_CONSTRAINTS + +void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld) +{ + if ( sizer == m_windowSizer) + return; + + if ( m_windowSizer ) + { + m_windowSizer->SetContainingWindow(NULL); + + if ( deleteOld ) + delete m_windowSizer; + } + + m_windowSizer = sizer; + if ( m_windowSizer ) + { + m_windowSizer->SetContainingWindow((wxWindow *)this); + } + + SetAutoLayout(m_windowSizer != NULL); +} + +void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld) +{ + SetSizer( sizer, deleteOld ); + sizer->SetSizeHints( (wxWindow*) this ); +} + + +void wxWindowBase::SetContainingSizer(wxSizer* sizer) +{ + // adding a window to a sizer twice is going to result in fatal and + // hard to debug problems later because when deleting the second + // associated wxSizerItem we're going to dereference a dangling + // pointer; so try to detect this as early as possible + wxASSERT_MSG( !sizer || m_containingSizer != sizer, + wxT("Adding a window to the same sizer twice?") ); + + m_containingSizer = sizer; +} + +#if wxUSE_CONSTRAINTS + +void wxWindowBase::SatisfyConstraints() +{ + wxLayoutConstraints *constr = GetConstraints(); + bool wasOk = constr && constr->AreSatisfied(); + + ResetConstraints(); // Mark all constraints as unevaluated + + int noChanges = 1; + + // if we're a top level panel (i.e. our parent is frame/dialog), our + // own constraints will never be satisfied any more unless we do it + // here + if ( wasOk ) + { + while ( noChanges > 0 ) + { + LayoutPhase1(&noChanges); + } + } + + LayoutPhase2(&noChanges); +} + +#endif // wxUSE_CONSTRAINTS + +bool wxWindowBase::Layout() +{ + // If there is a sizer, use it instead of the constraints + if ( GetSizer() ) + { + int w = 0, h = 0; + GetVirtualSize(&w, &h); + GetSizer()->SetDimension( 0, 0, w, h ); + } +#if wxUSE_CONSTRAINTS + else + { + SatisfyConstraints(); // Find the right constraints values + SetConstraintSizes(); // Recursively set the real window sizes + } +#endif + + return true; +} + +void wxWindowBase::InternalOnSize(wxSizeEvent& event) +{ + if ( GetAutoLayout() ) + Layout(); + + event.Skip(); +} + +#if wxUSE_CONSTRAINTS + +// first phase of the constraints evaluation: set our own constraints +bool wxWindowBase::LayoutPhase1(int *noChanges) +{ + wxLayoutConstraints *constr = GetConstraints(); + + return !constr || constr->SatisfyConstraints(this, noChanges); +} + +// second phase: set the constraints for our children +bool wxWindowBase::LayoutPhase2(int *noChanges) +{ + *noChanges = 0; + + // Layout children + DoPhase(1); + + // Layout grand children + DoPhase(2); + + return true; +} + +// Do a phase of evaluating child constraints +bool wxWindowBase::DoPhase(int phase) +{ + // the list containing the children for which the constraints are already + // set correctly + wxWindowList succeeded; + + // the max number of iterations we loop before concluding that we can't set + // the constraints + static const int maxIterations = 500; + + for ( int noIterations = 0; noIterations < maxIterations; noIterations++ ) + { + int noChanges = 0; + + // loop over all children setting their constraints + for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + node; + node = node->GetNext() ) + { + wxWindow *child = node->GetData(); + if ( child->IsTopLevel() ) + { + // top level children are not inside our client area + continue; + } + + if ( !child->GetConstraints() || succeeded.Find(child) ) + { + // this one is either already ok or nothing we can do about it + continue; + } + + int tempNoChanges = 0; + bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges) + : child->LayoutPhase2(&tempNoChanges); + noChanges += tempNoChanges; + + if ( success ) + { + succeeded.Append(child); + } + } + + if ( !noChanges ) + { + // constraints are set + break; + } + } + + return true; +} + +void wxWindowBase::ResetConstraints() +{ + wxLayoutConstraints *constr = GetConstraints(); + if ( constr ) + { + constr->left.SetDone(false); + constr->top.SetDone(false); + constr->right.SetDone(false); + constr->bottom.SetDone(false); + constr->width.SetDone(false); + constr->height.SetDone(false); + constr->centreX.SetDone(false); + constr->centreY.SetDone(false); + } + + wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + while (node) + { + wxWindow *win = node->GetData(); + if ( !win->IsTopLevel() ) + win->ResetConstraints(); + node = node->GetNext(); + } +} + +// Need to distinguish between setting the 'fake' size for windows and sizers, +// and setting the real values. +void wxWindowBase::SetConstraintSizes(bool recurse) +{ + wxLayoutConstraints *constr = GetConstraints(); + if ( constr && constr->AreSatisfied() ) + { + int x = constr->left.GetValue(); + int y = constr->top.GetValue(); + int w = constr->width.GetValue(); + int h = constr->height.GetValue(); + + if ( (constr->width.GetRelationship() != wxAsIs ) || + (constr->height.GetRelationship() != wxAsIs) ) + { + // We really shouldn't set negative sizes for the windows so make + // them at least of 1*1 size + SetSize(x, y, w > 0 ? w : 1, h > 0 ? h : 1); + } + else + { + // If we don't want to resize this window, just move it... + Move(x, y); + } + } + else if ( constr ) + { + wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."), + GetClassInfo()->GetClassName(), + GetName().c_str()); + } + + if ( recurse ) + { + wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + while (node) + { + wxWindow *win = node->GetData(); + if ( !win->IsTopLevel() && win->GetConstraints() ) + win->SetConstraintSizes(); + node = node->GetNext(); + } + } +} + +// Only set the size/position of the constraint (if any) +void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h) +{ + wxLayoutConstraints *constr = GetConstraints(); + if ( constr ) + { + if ( x != wxDefaultCoord ) + { + constr->left.SetValue(x); + constr->left.SetDone(true); + } + if ( y != wxDefaultCoord ) + { + constr->top.SetValue(y); + constr->top.SetDone(true); + } + if ( w != wxDefaultCoord ) + { + constr->width.SetValue(w); + constr->width.SetDone(true); + } + if ( h != wxDefaultCoord ) + { + constr->height.SetValue(h); + constr->height.SetDone(true); + } + } +} + +void wxWindowBase::MoveConstraint(int x, int y) +{ + wxLayoutConstraints *constr = GetConstraints(); + if ( constr ) + { + if ( x != wxDefaultCoord ) + { + constr->left.SetValue(x); + constr->left.SetDone(true); + } + if ( y != wxDefaultCoord ) + { + constr->top.SetValue(y); + constr->top.SetDone(true); + } + } +} + +void wxWindowBase::GetSizeConstraint(int *w, int *h) const +{ + wxLayoutConstraints *constr = GetConstraints(); + if ( constr ) + { + *w = constr->width.GetValue(); + *h = constr->height.GetValue(); + } + else + GetSize(w, h); +} + +void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const +{ + wxLayoutConstraints *constr = GetConstraints(); + if ( constr ) + { + *w = constr->width.GetValue(); + *h = constr->height.GetValue(); + } + else + GetClientSize(w, h); +} + +void wxWindowBase::GetPositionConstraint(int *x, int *y) const +{ + wxLayoutConstraints *constr = GetConstraints(); + if ( constr ) + { + *x = constr->left.GetValue(); + *y = constr->top.GetValue(); + } + else + GetPosition(x, y); +} + +#endif // wxUSE_CONSTRAINTS + +void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const +{ + wxWindow *parent = GetParent(); + if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent ) + { + wxPoint pt(parent->GetClientAreaOrigin()); + x += pt.x; + y += pt.y; + } +} + +// ---------------------------------------------------------------------------- +// Update UI processing +// ---------------------------------------------------------------------------- + +void wxWindowBase::UpdateWindowUI(long flags) +{ + wxUpdateUIEvent event(GetId()); + event.SetEventObject(this); + + if ( GetEventHandler()->ProcessEvent(event) ) + { + DoUpdateWindowUI(event); + } + + if (flags & wxUPDATE_UI_RECURSE) + { + wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + while (node) + { + wxWindow* child = (wxWindow*) node->GetData(); + child->UpdateWindowUI(flags); + node = node->GetNext(); + } + } +} + +// do the window-specific processing after processing the update event +void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event) +{ + if ( event.GetSetEnabled() ) + Enable(event.GetEnabled()); + + if ( event.GetSetShown() ) + Show(event.GetShown()); +} + +// ---------------------------------------------------------------------------- +// Idle processing +// ---------------------------------------------------------------------------- + +// Send idle event to window and all subwindows +bool wxWindowBase::SendIdleEvents(wxIdleEvent& event) +{ + bool needMore = false; + + OnInternalIdle(); + + // should we send idle event to this window? + if (wxIdleEvent::GetMode() == wxIDLE_PROCESS_ALL || + HasExtraStyle(wxWS_EX_PROCESS_IDLE)) + { + event.SetEventObject(this); + HandleWindowEvent(event); + + if (event.MoreRequested()) + needMore = true; + } + wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + for (; node; node = node->GetNext()) + { + wxWindow* child = node->GetData(); + if (child->SendIdleEvents(event)) + needMore = true; + } + + return needMore; +} + +void wxWindowBase::OnInternalIdle() +{ + if ( wxUpdateUIEvent::CanUpdate(this) ) + UpdateWindowUI(wxUPDATE_UI_FROMIDLE); +} + +// ---------------------------------------------------------------------------- +// dialog units translations +// ---------------------------------------------------------------------------- + +// Windows' computes dialog units using average character width over upper- +// and lower-case ASCII alphabet and not using the average character width +// metadata stored in the font; see +// http://support.microsoft.com/default.aspx/kb/145994 for detailed discussion. +// It's important that we perform the conversion in identical way, because +// dialog units natively exist only on Windows and Windows HIG is expressed +// using them. +wxSize wxWindowBase::GetDlgUnitBase() const +{ + const wxWindowBase * const parent = wxGetTopLevelParent((wxWindow*)this); + + wxCHECK_MSG( parent, wxDefaultSize, wxS("Must have TLW parent") ); + + if ( !parent->m_font.IsOk() ) + { + // Default GUI font is used. This is the most common case, so + // cache the results. + static wxSize s_defFontSize; + if ( s_defFontSize.x == 0 ) + s_defFontSize = wxPrivate::GetAverageASCIILetterSize(*parent); + return s_defFontSize; + } + else + { + // Custom font, we always need to compute the result + return wxPrivate::GetAverageASCIILetterSize(*parent); + } +} + +wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt) const +{ + const wxSize base = GetDlgUnitBase(); + + // NB: wxMulDivInt32() is used, because it correctly rounds the result + + wxPoint pt2 = wxDefaultPosition; + if (pt.x != wxDefaultCoord) + pt2.x = wxMulDivInt32(pt.x, 4, base.x); + if (pt.y != wxDefaultCoord) + pt2.y = wxMulDivInt32(pt.y, 8, base.y); + + return pt2; +} + +wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt) const +{ + const wxSize base = GetDlgUnitBase(); + + wxPoint pt2 = wxDefaultPosition; + if (pt.x != wxDefaultCoord) + pt2.x = wxMulDivInt32(pt.x, base.x, 4); + if (pt.y != wxDefaultCoord) + pt2.y = wxMulDivInt32(pt.y, base.y, 8); + + return pt2; +} + +// ---------------------------------------------------------------------------- +// event handlers +// ---------------------------------------------------------------------------- + +// propagate the colour change event to the subwindows +void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event)) +{ + wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); + while ( node ) + { + // Only propagate to non-top-level windows + wxWindow *win = node->GetData(); + if ( !win->IsTopLevel() ) + { + wxSysColourChangedEvent event2; + event2.SetEventObject(win); + win->GetEventHandler()->ProcessEvent(event2); + } + + node = node->GetNext(); + } + + Refresh(); +} + +// the default action is to populate dialog with data when it's created, +// and nudge the UI into displaying itself correctly in case +// we've turned the wxUpdateUIEvents frequency down low. +void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) ) +{ + TransferDataToWindow(); + + // Update the UI at this point + UpdateWindowUI(wxUPDATE_UI_RECURSE); +} + +// ---------------------------------------------------------------------------- +// menu-related functions +// ---------------------------------------------------------------------------- + +#if wxUSE_MENUS + +bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y) +{ + wxCHECK_MSG( menu, false, "can't popup NULL menu" ); + + wxMenuInvokingWindowSetter + setInvokingWin(*menu, static_cast(this)); + + wxCurrentPopupMenu = menu; + const bool rc = DoPopupMenu(menu, x, y); + wxCurrentPopupMenu = NULL; + + return rc; +} + +// this is used to pass the id of the selected item from the menu event handler +// to the main function itself +// +// it's ok to use a global here as there can be at most one popup menu shown at +// any time +static int gs_popupMenuSelection = wxID_NONE; + +void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event) +{ + // store the id in a global variable where we'll retrieve it from later + gs_popupMenuSelection = event.GetId(); +} + +void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event)) +{ + // nothing to do but do not skip it +} + +int +wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y) +{ + gs_popupMenuSelection = wxID_NONE; + + Connect(wxEVT_COMMAND_MENU_SELECTED, + wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu), + NULL, + this); + + // it is common to construct the menu passed to this function dynamically + // using some fixed range of ids which could clash with the ids used + // elsewhere in the program, which could result in some menu items being + // unintentionally disabled or otherwise modified by update UI handlers + // elsewhere in the program code and this is difficult to avoid in the + // program itself, so instead we just temporarily suspend UI updating while + // this menu is shown + Connect(wxEVT_UPDATE_UI, + wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate), + NULL, + this); + + PopupMenu(&menu, x, y); + + Disconnect(wxEVT_UPDATE_UI, + wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate), + NULL, + this); + Disconnect(wxEVT_COMMAND_MENU_SELECTED, + wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu), + NULL, + this); + + return gs_popupMenuSelection; +} + +#endif // wxUSE_MENUS + +// methods for drawing the sizers in a visible way: this is currently only +// enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work +// that well and also because we don't want to leave it enabled in default +// builds used for production +#if wxDEBUG_LEVEL > 1 + +static void DrawSizers(wxWindowBase *win); + +static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen) +{ + wxClientDC dc((wxWindow *)win); + dc.SetPen(*pen); + dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) : + *wxTRANSPARENT_BRUSH); + dc.DrawRectangle(rect.Deflate(1, 1)); +} + +static void DrawSizer(wxWindowBase *win, wxSizer *sizer) +{ + const wxSizerItemList& items = sizer->GetChildren(); + for ( wxSizerItemList::const_iterator i = items.begin(), + end = items.end(); + i != end; + ++i ) + { + wxSizerItem *item = *i; + if ( item->IsSizer() ) + { + DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN); + DrawSizer(win, item->GetSizer()); + } + else if ( item->IsSpacer() ) + { + DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN); + } + else if ( item->IsWindow() ) + { + DrawSizers(item->GetWindow()); + } + else + wxFAIL_MSG("inconsistent wxSizerItem status!"); + } +} + +static void DrawSizers(wxWindowBase *win) +{ + DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN); + + wxSizer *sizer = win->GetSizer(); + if ( sizer ) + { + DrawSizer(win, sizer); + } + else // no sizer, still recurse into the children + { + const wxWindowList& children = win->GetChildren(); + for ( wxWindowList::const_iterator i = children.begin(), + end = children.end(); + i != end; + ++i ) + { + DrawSizers(*i); + } + + // show all kind of sizes of this window; see the "window sizing" topic + // overview for more info about the various differences: + wxSize fullSz = win->GetSize(); + wxSize clientSz = win->GetClientSize(); + wxSize bestSz = win->GetBestSize(); + wxSize minSz = win->GetMinSize(); + wxSize maxSz = win->GetMaxSize(); + wxSize virtualSz = win->GetVirtualSize(); + + wxMessageOutputDebug dbgout; + dbgout.Printf( + "%-10s => fullsz=%4d;%-4d clientsz=%4d;%-4d bestsz=%4d;%-4d minsz=%4d;%-4d maxsz=%4d;%-4d virtualsz=%4d;%-4d\n", + win->GetName(), + fullSz.x, fullSz.y, + clientSz.x, clientSz.y, + bestSz.x, bestSz.y, + minSz.x, minSz.y, + maxSz.x, maxSz.y, + virtualSz.x, virtualSz.y); + } +} + +#endif // wxDEBUG_LEVEL + +// process special middle clicks +void wxWindowBase::OnMiddleClick( wxMouseEvent& event ) +{ + if ( event.ControlDown() && event.AltDown() ) + { +#if wxDEBUG_LEVEL > 1 + // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds + if ( event.ShiftDown() ) + { + DrawSizers(this); + } + else +#endif // __WXDEBUG__ + { +#if wxUSE_MSGDLG + // just Ctrl-Alt-middle click shows information about wx version + ::wxInfoMessageBox((wxWindow*)this); +#endif // wxUSE_MSGDLG + } + } + else + { + event.Skip(); + } +} + +// ---------------------------------------------------------------------------- +// accessibility +// ---------------------------------------------------------------------------- + +#if wxUSE_ACCESSIBILITY +void wxWindowBase::SetAccessible(wxAccessible* accessible) +{ + if (m_accessible && (accessible != m_accessible)) + delete m_accessible; + m_accessible = accessible; + if (m_accessible) + m_accessible->SetWindow((wxWindow*) this); +} + +// Returns the accessible object, creating if necessary. +wxAccessible* wxWindowBase::GetOrCreateAccessible() +{ + if (!m_accessible) + m_accessible = CreateAccessible(); + return m_accessible; +} + +// Override to create a specific accessible object. +wxAccessible* wxWindowBase::CreateAccessible() +{ + return new wxWindowAccessible((wxWindow*) this); +} + +#endif + +// ---------------------------------------------------------------------------- +// list classes implementation +// ---------------------------------------------------------------------------- + +#if wxUSE_STD_CONTAINERS + +#include "wx/listimpl.cpp" +WX_DEFINE_LIST(wxWindowList) + +#else // !wxUSE_STD_CONTAINERS + +void wxWindowListNode::DeleteData() +{ + delete (wxWindow *)GetData(); +} + +#endif // wxUSE_STD_CONTAINERS/!wxUSE_STD_CONTAINERS + +// ---------------------------------------------------------------------------- +// borders +// ---------------------------------------------------------------------------- + +wxBorder wxWindowBase::GetBorder(long flags) const +{ + wxBorder border = (wxBorder)(flags & wxBORDER_MASK); + if ( border == wxBORDER_DEFAULT ) + { + border = GetDefaultBorder(); + } + else if ( border == wxBORDER_THEME ) + { + border = GetDefaultBorderForControl(); + } + + return border; +} + +wxBorder wxWindowBase::GetDefaultBorder() const +{ + return wxBORDER_NONE; +} + +// ---------------------------------------------------------------------------- +// hit testing +// ---------------------------------------------------------------------------- + +wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const +{ + // here we just check if the point is inside the window or not + + // check the top and left border first + bool outside = x < 0 || y < 0; + if ( !outside ) + { + // check the right and bottom borders too + wxSize size = GetSize(); + outside = x >= size.x || y >= size.y; + } + + return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE; +} + +// ---------------------------------------------------------------------------- +// mouse capture +// ---------------------------------------------------------------------------- + +struct WXDLLEXPORT wxWindowNext +{ + wxWindow *win; + wxWindowNext *next; +} *wxWindowBase::ms_winCaptureNext = NULL; +wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL; +bool wxWindowBase::ms_winCaptureChanging = false; + +void wxWindowBase::CaptureMouse() +{ + wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast(this)); + + wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") ); + + ms_winCaptureChanging = true; + + wxWindow *winOld = GetCapture(); + if ( winOld ) + { + ((wxWindowBase*) winOld)->DoReleaseMouse(); + + // save it on stack + wxWindowNext *item = new wxWindowNext; + item->win = winOld; + item->next = ms_winCaptureNext; + ms_winCaptureNext = item; + } + //else: no mouse capture to save + + DoCaptureMouse(); + ms_winCaptureCurrent = (wxWindow*)this; + + ms_winCaptureChanging = false; +} + +void wxWindowBase::ReleaseMouse() +{ + wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast(this)); + + wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") ); + + wxASSERT_MSG( GetCapture() == this, + "attempt to release mouse, but this window hasn't captured it" ); + wxASSERT_MSG( ms_winCaptureCurrent == this, + "attempt to release mouse, but this window hasn't captured it" ); + + ms_winCaptureChanging = true; + + DoReleaseMouse(); + ms_winCaptureCurrent = NULL; + + if ( ms_winCaptureNext ) + { + ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse(); + ms_winCaptureCurrent = ms_winCaptureNext->win; + + wxWindowNext *item = ms_winCaptureNext; + ms_winCaptureNext = item->next; + delete item; + } + //else: stack is empty, no previous capture + + ms_winCaptureChanging = false; + + wxLogTrace(wxT("mousecapture"), + (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"), + static_cast(GetCapture())); +} + +static void DoNotifyWindowAboutCaptureLost(wxWindow *win) +{ + wxMouseCaptureLostEvent event(win->GetId()); + event.SetEventObject(win); + if ( !win->GetEventHandler()->ProcessEvent(event) ) + { + // windows must handle this event, otherwise the app wouldn't behave + // correctly if it loses capture unexpectedly; see the discussion here: + // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863 + // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376 + wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") ); + } +} + +/* static */ +void wxWindowBase::NotifyCaptureLost() +{ + // don't do anything if capture lost was expected, i.e. resulted from + // a wx call to ReleaseMouse or CaptureMouse: + if ( ms_winCaptureChanging ) + return; + + // if the capture was lost unexpectedly, notify every window that has + // capture (on stack or current) about it and clear the stack: + + if ( ms_winCaptureCurrent ) + { + DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent); + ms_winCaptureCurrent = NULL; + } + + while ( ms_winCaptureNext ) + { + wxWindowNext *item = ms_winCaptureNext; + ms_winCaptureNext = item->next; + + DoNotifyWindowAboutCaptureLost(item->win); + + delete item; + } +} + +#if wxUSE_HOTKEY + +bool +wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId), + int WXUNUSED(modifiers), + int WXUNUSED(keycode)) +{ + // not implemented + return false; +} + +bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId)) +{ + // not implemented + return false; +} + +#endif // wxUSE_HOTKEY + +// ---------------------------------------------------------------------------- +// event processing +// ---------------------------------------------------------------------------- + +bool wxWindowBase::TryBefore(wxEvent& event) +{ +#if wxUSE_VALIDATORS + // Can only use the validator of the window which + // is receiving the event + if ( event.GetEventObject() == this ) + { + wxValidator * const validator = GetValidator(); + if ( validator && validator->ProcessEventLocally(event) ) + { + return true; + } + } +#endif // wxUSE_VALIDATORS + + return wxEvtHandler::TryBefore(event); +} + +bool wxWindowBase::TryAfter(wxEvent& event) +{ + // carry on up the parent-child hierarchy if the propagation count hasn't + // reached zero yet + if ( event.ShouldPropagate() ) + { + // honour the requests to stop propagation at this window: this is + // used by the dialogs, for example, to prevent processing the events + // from the dialog controls in the parent frame which rarely, if ever, + // makes sense + if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) ) + { + wxWindow *parent = GetParent(); + if ( parent && !parent->IsBeingDeleted() ) + { + wxPropagateOnce propagateOnce(event); + + return parent->GetEventHandler()->ProcessEvent(event); + } + } + } + + return wxEvtHandler::TryAfter(event); +} + +// ---------------------------------------------------------------------------- +// window relationships +// ---------------------------------------------------------------------------- + +wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const +{ + wxCHECK_MSG( GetParent(), NULL, + wxT("GetPrev/NextSibling() don't work for TLWs!") ); + + wxWindowList& siblings = GetParent()->GetChildren(); + wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this); + wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") ); + + if ( order == OrderBefore ) + i = i->GetPrevious(); + else // OrderAfter + i = i->GetNext(); + + return i ? i->GetData() : NULL; +} + +// ---------------------------------------------------------------------------- +// keyboard navigation +// ---------------------------------------------------------------------------- + +// Navigates in the specified direction inside this window +bool wxWindowBase::DoNavigateIn(int flags) +{ +#ifdef wxHAS_NATIVE_TAB_TRAVERSAL + // native code doesn't process our wxNavigationKeyEvents anyhow + wxUnusedVar(flags); + return false; +#else // !wxHAS_NATIVE_TAB_TRAVERSAL + wxNavigationKeyEvent eventNav; + wxWindow *focused = FindFocus(); + eventNav.SetCurrentFocus(focused); + eventNav.SetEventObject(focused); + eventNav.SetFlags(flags); + return GetEventHandler()->ProcessEvent(eventNav); +#endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL +} + +bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event) +{ + if ( event.GetKeyCode() != WXK_TAB ) + return false; + + int flags = wxNavigationKeyEvent::FromTab; + + if ( event.ShiftDown() ) + flags |= wxNavigationKeyEvent::IsBackward; + else + flags |= wxNavigationKeyEvent::IsForward; + + if ( event.ControlDown() ) + flags |= wxNavigationKeyEvent::WinChange; + + Navigate(flags); + return true; +} + +void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move) +{ + // check that we're not a top level window + wxCHECK_RET( GetParent(), + wxT("MoveBefore/AfterInTabOrder() don't work for TLWs!") ); + + // detect the special case when we have nothing to do anyhow and when the + // code below wouldn't work + if ( win == this ) + return; + + // find the target window in the siblings list + wxWindowList& siblings = GetParent()->GetChildren(); + wxWindowList::compatibility_iterator i = siblings.Find(win); + wxCHECK_RET( i, wxT("MoveBefore/AfterInTabOrder(): win is not a sibling") ); + + // unfortunately, when wxUSE_STD_CONTAINERS == 1 DetachNode() is not + // implemented so we can't just move the node around + wxWindow *self = (wxWindow *)this; + siblings.DeleteObject(self); + if ( move == OrderAfter ) + { + i = i->GetNext(); + } + + if ( i ) + { + siblings.Insert(i, self); + } + else // OrderAfter and win was the last sibling + { + siblings.Append(self); + } +} + +// ---------------------------------------------------------------------------- +// focus handling +// ---------------------------------------------------------------------------- + +/*static*/ wxWindow* wxWindowBase::FindFocus() +{ + wxWindowBase *win = DoFindFocus(); + return win ? win->GetMainWindowOfCompositeControl() : NULL; +} + +bool wxWindowBase::HasFocus() const +{ + wxWindowBase* const win = DoFindFocus(); + return win && + (this == win || this == win->GetMainWindowOfCompositeControl()); +} + +// ---------------------------------------------------------------------------- +// drag and drop +// ---------------------------------------------------------------------------- + +#if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__) + +namespace +{ + +class DragAcceptFilesTarget : public wxFileDropTarget +{ +public: + DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {} + + virtual bool OnDropFiles(wxCoord x, wxCoord y, + const wxArrayString& filenames) + { + wxDropFilesEvent event(wxEVT_DROP_FILES, + filenames.size(), + wxCArrayString(filenames).Release()); + event.SetEventObject(m_win); + event.m_pos.x = x; + event.m_pos.y = y; + + return m_win->HandleWindowEvent(event); + } + +private: + wxWindowBase * const m_win; + + wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget); +}; + + +} // anonymous namespace + +// Generic version of DragAcceptFiles(). It works by installing a simple +// wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used +// together with explicit SetDropTarget() calls. +void wxWindowBase::DragAcceptFiles(bool accept) +{ + if ( accept ) + { + wxASSERT_MSG( !GetDropTarget(), + "cannot use DragAcceptFiles() and SetDropTarget() together" ); + SetDropTarget(new DragAcceptFilesTarget(this)); + } + else + { + SetDropTarget(NULL); + } +} + +#endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__) + +// ---------------------------------------------------------------------------- +// global functions +// ---------------------------------------------------------------------------- + +wxWindow* wxGetTopLevelParent(wxWindow *win) +{ + while ( win && !win->IsTopLevel() ) + win = win->GetParent(); + + return win; +} + +#if wxUSE_ACCESSIBILITY +// ---------------------------------------------------------------------------- +// accessible object for windows +// ---------------------------------------------------------------------------- + +// Can return either a child object, or an integer +// representing the child element, starting from 1. +wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject)) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + return wxACC_NOT_IMPLEMENTED; +} + +// Returns the rectangle for this object (id = 0) or a child element (id > 0). +wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + wxWindow* win = NULL; + if (elementId == 0) + { + win = GetWindow(); + } + else + { + if (elementId <= (int) GetWindow()->GetChildren().GetCount()) + { + win = GetWindow()->GetChildren().Item(elementId-1)->GetData(); + } + else + return wxACC_FAIL; + } + if (win) + { + rect = win->GetRect(); + if (win->GetParent() && !wxDynamicCast(win, wxTopLevelWindow)) + rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition())); + return wxACC_OK; + } + + return wxACC_NOT_IMPLEMENTED; +} + +// Navigates from fromId to toId/toObject. +wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId, + int* WXUNUSED(toId), wxAccessible** toObject) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + switch (navDir) + { + case wxNAVDIR_FIRSTCHILD: + { + if (GetWindow()->GetChildren().GetCount() == 0) + return wxACC_FALSE; + wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData(); + *toObject = childWindow->GetOrCreateAccessible(); + + return wxACC_OK; + } + case wxNAVDIR_LASTCHILD: + { + if (GetWindow()->GetChildren().GetCount() == 0) + return wxACC_FALSE; + wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData(); + *toObject = childWindow->GetOrCreateAccessible(); + + return wxACC_OK; + } + case wxNAVDIR_RIGHT: + case wxNAVDIR_DOWN: + case wxNAVDIR_NEXT: + { + wxWindowList::compatibility_iterator node = + wxWindowList::compatibility_iterator(); + if (fromId == 0) + { + // Can't navigate to sibling of this window + // if we're a top-level window. + if (!GetWindow()->GetParent()) + return wxACC_NOT_IMPLEMENTED; + + node = GetWindow()->GetParent()->GetChildren().Find(GetWindow()); + } + else + { + if (fromId <= (int) GetWindow()->GetChildren().GetCount()) + node = GetWindow()->GetChildren().Item(fromId-1); + } + + if (node && node->GetNext()) + { + wxWindow* nextWindow = node->GetNext()->GetData(); + *toObject = nextWindow->GetOrCreateAccessible(); + return wxACC_OK; + } + else + return wxACC_FALSE; + } + case wxNAVDIR_LEFT: + case wxNAVDIR_UP: + case wxNAVDIR_PREVIOUS: + { + wxWindowList::compatibility_iterator node = + wxWindowList::compatibility_iterator(); + if (fromId == 0) + { + // Can't navigate to sibling of this window + // if we're a top-level window. + if (!GetWindow()->GetParent()) + return wxACC_NOT_IMPLEMENTED; + + node = GetWindow()->GetParent()->GetChildren().Find(GetWindow()); + } + else + { + if (fromId <= (int) GetWindow()->GetChildren().GetCount()) + node = GetWindow()->GetChildren().Item(fromId-1); + } + + if (node && node->GetPrevious()) + { + wxWindow* previousWindow = node->GetPrevious()->GetData(); + *toObject = previousWindow->GetOrCreateAccessible(); + return wxACC_OK; + } + else + return wxACC_FALSE; + } + } + + return wxACC_NOT_IMPLEMENTED; +} + +// Gets the name of the specified object. +wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + wxString title; + + // If a child, leave wxWidgets to call the function on the actual + // child object. + if (childId > 0) + return wxACC_NOT_IMPLEMENTED; + + // This will eventually be replaced by specialised + // accessible classes, one for each kind of wxWidgets + // control or window. +#if wxUSE_BUTTON + if (wxDynamicCast(GetWindow(), wxButton)) + title = ((wxButton*) GetWindow())->GetLabel(); + else +#endif + title = GetWindow()->GetName(); + + if (!title.empty()) + { + *name = title; + return wxACC_OK; + } + else + return wxACC_NOT_IMPLEMENTED; +} + +// Gets the number of children. +wxAccStatus wxWindowAccessible::GetChildCount(int* childId) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + *childId = (int) GetWindow()->GetChildren().GetCount(); + return wxACC_OK; +} + +// Gets the specified child (starting from 1). +// If *child is NULL and return value is wxACC_OK, +// this means that the child is a simple element and +// not an accessible object. +wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + if (childId == 0) + { + *child = this; + return wxACC_OK; + } + + if (childId > (int) GetWindow()->GetChildren().GetCount()) + return wxACC_FAIL; + + wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData(); + *child = childWindow->GetOrCreateAccessible(); + if (*child) + return wxACC_OK; + else + return wxACC_FAIL; +} + +// Gets the parent, or NULL. +wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + wxWindow* parentWindow = GetWindow()->GetParent(); + if (!parentWindow) + { + *parent = NULL; + return wxACC_OK; + } + else + { + *parent = parentWindow->GetOrCreateAccessible(); + if (*parent) + return wxACC_OK; + else + return wxACC_FAIL; + } +} + +// Performs the default action. childId is 0 (the action for this object) +// or > 0 (the action for a child). +// Return wxACC_NOT_SUPPORTED if there is no default action for this +// window (e.g. an edit control). +wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId)) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + return wxACC_NOT_IMPLEMENTED; +} + +// Gets the default action for this object (0) or > 0 (the action for a child). +// Return wxACC_OK even if there is no action. actionName is the action, or the empty +// string if there is no action. +// The retrieved string describes the action that is performed on an object, +// not what the object does as a result. For example, a toolbar button that prints +// a document has a default action of "Press" rather than "Prints the current document." +wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName)) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + return wxACC_NOT_IMPLEMENTED; +} + +// Returns the description for this object or a child. +wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard)); + if (!ht.empty()) + { + *description = ht; + return wxACC_OK; + } + return wxACC_NOT_IMPLEMENTED; +} + +// Returns help text for this object or a child, similar to tooltip text. +wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard)); + if (!ht.empty()) + { + *helpText = ht; + return wxACC_OK; + } + return wxACC_NOT_IMPLEMENTED; +} + +// Returns the keyboard shortcut for this object or child. +// Return e.g. ALT+K +wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut)) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + return wxACC_NOT_IMPLEMENTED; +} + +// Returns a role constant. +wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + // If a child, leave wxWidgets to call the function on the actual + // child object. + if (childId > 0) + return wxACC_NOT_IMPLEMENTED; + + if (wxDynamicCast(GetWindow(), wxControl)) + return wxACC_NOT_IMPLEMENTED; +#if wxUSE_STATUSBAR + if (wxDynamicCast(GetWindow(), wxStatusBar)) + return wxACC_NOT_IMPLEMENTED; +#endif +#if wxUSE_TOOLBAR + if (wxDynamicCast(GetWindow(), wxToolBar)) + return wxACC_NOT_IMPLEMENTED; +#endif + + //*role = wxROLE_SYSTEM_CLIENT; + *role = wxROLE_SYSTEM_CLIENT; + return wxACC_OK; + + #if 0 + return wxACC_NOT_IMPLEMENTED; + #endif +} + +// Returns a state constant. +wxAccStatus wxWindowAccessible::GetState(int childId, long* state) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + // If a child, leave wxWidgets to call the function on the actual + // child object. + if (childId > 0) + return wxACC_NOT_IMPLEMENTED; + + if (wxDynamicCast(GetWindow(), wxControl)) + return wxACC_NOT_IMPLEMENTED; + +#if wxUSE_STATUSBAR + if (wxDynamicCast(GetWindow(), wxStatusBar)) + return wxACC_NOT_IMPLEMENTED; +#endif +#if wxUSE_TOOLBAR + if (wxDynamicCast(GetWindow(), wxToolBar)) + return wxACC_NOT_IMPLEMENTED; +#endif + + *state = 0; + return wxACC_OK; + + #if 0 + return wxACC_NOT_IMPLEMENTED; + #endif +} + +// Returns a localized string representing the value for the object +// or child. +wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue)) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + return wxACC_NOT_IMPLEMENTED; +} + +// Selects the object or child. +wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags)) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + return wxACC_NOT_IMPLEMENTED; +} + +// Gets the window with the keyboard focus. +// If childId is 0 and child is NULL, no object in +// this subhierarchy has the focus. +// If this object has the focus, child should be 'this'. +wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child)) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + return wxACC_NOT_IMPLEMENTED; +} + +#if wxUSE_VARIANT +// Gets a variant representing the selected children +// of this object. +// Acceptable values: +// - a null variant (IsNull() returns true) +// - a list variant (GetType() == wxT("list") +// - an integer representing the selected child element, +// or 0 if this object is selected (GetType() == wxT("long") +// - a "void*" pointer to a wxAccessible child object +wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections)) +{ + wxASSERT( GetWindow() != NULL ); + if (!GetWindow()) + return wxACC_FAIL; + + return wxACC_NOT_IMPLEMENTED; +} +#endif // wxUSE_VARIANT + +#endif // wxUSE_ACCESSIBILITY + +// ---------------------------------------------------------------------------- +// RTL support +// ---------------------------------------------------------------------------- + +wxCoord +wxWindowBase::AdjustForLayoutDirection(wxCoord x, + wxCoord width, + wxCoord widthTotal) const +{ + if ( GetLayoutDirection() == wxLayout_RightToLeft ) + { + x = widthTotal - x - width; + } + + return x; +} + +