X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1c4a764c984ba8e482e5d808fd1c762aeb5b535a..06f28e557258a48f6a4b7ccb6aa08448c025ab68:/src/msw/button.cpp diff --git a/src/msw/button.cpp b/src/msw/button.cpp index 849eef8dbd..240e2e9813 100644 --- a/src/msw/button.cpp +++ b/src/msw/button.cpp @@ -1,199 +1,1402 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: button.cpp +// Name: src/msw/button.cpp // Purpose: wxButton // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Copyright: (c) Julian Smart +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "button.h" -#endif +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif -#ifndef WX_PRECOMP +#if wxUSE_BUTTON + #include "wx/button.h" + +#ifndef WX_PRECOMP + #include "wx/app.h" + #include "wx/brush.h" + #include "wx/panel.h" + #include "wx/bmpbuttn.h" + #include "wx/settings.h" + #include "wx/dcscreen.h" + #include "wx/dcclient.h" + #include "wx/toplevel.h" + #include "wx/msw/wrapcctl.h" + #include "wx/msw/private.h" + #include "wx/msw/missing.h" #endif -#include "wx/msw/private.h" +#include "wx/imaglist.h" +#include "wx/stockitem.h" +#include "wx/msw/private/button.h" +#include "wx/msw/private/dc.h" +#include "wx/private/window.h" + +using namespace wxMSWImpl; + +#if wxUSE_UXTHEME + #include "wx/msw/uxtheme.h" + + // no need to include tmschema.h + #ifndef BP_PUSHBUTTON + #define BP_PUSHBUTTON 1 + + #define PBS_NORMAL 1 + #define PBS_HOT 2 + #define PBS_PRESSED 3 + #define PBS_DISABLED 4 + #define PBS_DEFAULTED 5 -#if !USE_SHARED_LIBRARY -IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl) + #define TMT_CONTENTMARGINS 3602 + #endif + + // provide the necessary declarations ourselves if they're missing from + // headers + #ifndef BCM_SETIMAGELIST + #define BCM_SETIMAGELIST 0x1602 + #define BCM_SETTEXTMARGIN 0x1604 + + enum + { + BUTTON_IMAGELIST_ALIGN_LEFT, + BUTTON_IMAGELIST_ALIGN_RIGHT, + BUTTON_IMAGELIST_ALIGN_TOP, + BUTTON_IMAGELIST_ALIGN_BOTTOM + }; + + struct BUTTON_IMAGELIST + { + HIMAGELIST himl; + RECT margin; + UINT uAlign; + }; + #endif +#endif // wxUSE_UXTHEME + +#ifndef WM_THEMECHANGED + #define WM_THEMECHANGED 0x031A #endif -#define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10) +#ifndef ODS_NOACCEL + #define ODS_NOACCEL 0x0100 +#endif + +#ifndef ODS_NOFOCUSRECT + #define ODS_NOFOCUSRECT 0x0200 +#endif + +#ifndef DT_HIDEPREFIX + #define DT_HIDEPREFIX 0x00100000 +#endif + +// set the value for BCM_SETSHIELD (for the UAC shield) if it's not defined in +// the header +#ifndef BCM_SETSHIELD + #define BCM_SETSHIELD 0x160c +#endif + +// ---------------------------------------------------------------------------- +// button image data +// ---------------------------------------------------------------------------- + +// we use different data classes for owner drawn buttons and for themed XP ones + +class wxButtonImageData +{ +public: + wxButtonImageData() { } + virtual ~wxButtonImageData() { } + + virtual wxBitmap GetBitmap(wxButton::State which) const = 0; + virtual void SetBitmap(const wxBitmap& bitmap, wxButton::State which) = 0; + + virtual wxSize GetBitmapMargins() const = 0; + virtual void SetBitmapMargins(wxCoord x, wxCoord y) = 0; + + virtual wxDirection GetBitmapPosition() const = 0; + virtual void SetBitmapPosition(wxDirection dir) = 0; + +private: + wxDECLARE_NO_COPY_CLASS(wxButtonImageData); +}; + +namespace +{ + +// the gap between button edge and the interior area used by Windows for the +// standard buttons +const int OD_BUTTON_MARGIN = 4; + +class wxODButtonImageData : public wxButtonImageData +{ +public: + wxODButtonImageData(wxButton *btn, const wxBitmap& bitmap) + { + SetBitmap(bitmap, wxButton::State_Normal); + + m_dir = wxLEFT; + + // we use margins when we have both bitmap and text, but when we have + // only the bitmap it should take up the entire button area + if ( btn->ShowsLabel() ) + { + m_margin.x = btn->GetCharWidth(); + m_margin.y = btn->GetCharHeight() / 2; + } + } + + virtual wxBitmap GetBitmap(wxButton::State which) const + { + return m_bitmaps[which]; + } + + virtual void SetBitmap(const wxBitmap& bitmap, wxButton::State which) + { + m_bitmaps[which] = bitmap; + } + + virtual wxSize GetBitmapMargins() const + { + return m_margin; + } + + virtual void SetBitmapMargins(wxCoord x, wxCoord y) + { + m_margin = wxSize(x, y); + } + + virtual wxDirection GetBitmapPosition() const + { + return m_dir; + } + + virtual void SetBitmapPosition(wxDirection dir) + { + m_dir = dir; + } + +private: + // just store the values passed to us to be able to retrieve them later + // from the drawing code + wxBitmap m_bitmaps[wxButton::State_Max]; + wxSize m_margin; + wxDirection m_dir; + + wxDECLARE_NO_COPY_CLASS(wxODButtonImageData); +}; + +#if wxUSE_UXTHEME + +// somehow the margin is one pixel greater than the value returned by +// GetThemeMargins() call +const int XP_BUTTON_EXTRA_MARGIN = 1; + +class wxXPButtonImageData : public wxButtonImageData +{ +public: + // we must be constructed with the size of our images as we need to create + // the image list + wxXPButtonImageData(wxButton *btn, const wxBitmap& bitmap) + : m_iml(bitmap.GetWidth(), bitmap.GetHeight(), true /* use mask */, + wxButton::State_Max), + m_hwndBtn(GetHwndOf(btn)) + { + // initialize all bitmaps to normal state + for ( int n = 0; n < wxButton::State_Max; n++ ) + { + m_iml.Add(bitmap); + } + + m_data.himl = GetHimagelistOf(&m_iml); + + // use default margins + m_data.margin.left = + m_data.margin.right = btn->GetCharWidth(); + m_data.margin.top = + m_data.margin.bottom = btn->GetCharHeight() / 2; + + // and default alignment + m_data.uAlign = BUTTON_IMAGELIST_ALIGN_LEFT; + + UpdateImageInfo(); + } + + virtual wxBitmap GetBitmap(wxButton::State which) const + { + return m_iml.GetBitmap(which); + } + + virtual void SetBitmap(const wxBitmap& bitmap, wxButton::State which) + { + m_iml.Replace(which, bitmap); + + UpdateImageInfo(); + } + + virtual wxSize GetBitmapMargins() const + { + return wxSize(m_data.margin.left, m_data.margin.top); + } + + virtual void SetBitmapMargins(wxCoord x, wxCoord y) + { + RECT& margin = m_data.margin; + margin.left = + margin.right = x; + margin.top = + margin.bottom = y; + + if ( !::SendMessage(m_hwndBtn, BCM_SETTEXTMARGIN, 0, (LPARAM)&margin) ) + { + wxLogDebug("SendMessage(BCM_SETTEXTMARGIN) failed"); + } + } + + virtual wxDirection GetBitmapPosition() const + { + switch ( m_data.uAlign ) + { + default: + wxFAIL_MSG( "invalid image alignment" ); + // fall through + + case BUTTON_IMAGELIST_ALIGN_LEFT: + return wxLEFT; + + case BUTTON_IMAGELIST_ALIGN_RIGHT: + return wxRIGHT; + + case BUTTON_IMAGELIST_ALIGN_TOP: + return wxTOP; + + case BUTTON_IMAGELIST_ALIGN_BOTTOM: + return wxBOTTOM; + } + } + + virtual void SetBitmapPosition(wxDirection dir) + { + UINT alignNew; + switch ( dir ) + { + default: + wxFAIL_MSG( "invalid direction" ); + // fall through + + case wxLEFT: + alignNew = BUTTON_IMAGELIST_ALIGN_LEFT; + break; + + case wxRIGHT: + alignNew = BUTTON_IMAGELIST_ALIGN_RIGHT; + break; + + case wxTOP: + alignNew = BUTTON_IMAGELIST_ALIGN_TOP; + break; + + case wxBOTTOM: + alignNew = BUTTON_IMAGELIST_ALIGN_BOTTOM; + break; + } + + if ( alignNew != m_data.uAlign ) + { + m_data.uAlign = alignNew; + UpdateImageInfo(); + } + } + +private: + void UpdateImageInfo() + { + if ( !::SendMessage(m_hwndBtn, BCM_SETIMAGELIST, 0, (LPARAM)&m_data) ) + { + wxLogDebug("SendMessage(BCM_SETIMAGELIST) failed"); + } + } + + // we store image list separately to be able to use convenient wxImageList + // methods instead of working with raw HIMAGELIST + wxImageList m_iml; + + // store the rest of the data in BCM_SETIMAGELIST-friendly form + BUTTON_IMAGELIST m_data; + + // the button we're associated with + const HWND m_hwndBtn; -// Buttons -bool wxButton::MSWCommand(WXUINT param, WXWORD id) + wxDECLARE_NO_COPY_CLASS(wxXPButtonImageData); +}; + +#endif // wxUSE_UXTHEME + +} // anonymous namespace + +// ---------------------------------------------------------------------------- +// macros +// ---------------------------------------------------------------------------- + +// ============================================================================ +// implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// helper functions from wx/msw/private/button.h +// ---------------------------------------------------------------------------- + +void wxMSWButton::UpdateMultilineStyle(HWND hwnd, const wxString& label) +{ + // update BS_MULTILINE style depending on the new label (resetting it + // doesn't seem to do anything very useful but it shouldn't hurt and we do + // have to set it whenever the label becomes multi line as otherwise it + // wouldn't be shown correctly as we don't use BS_MULTILINE when creating + // the control unless it already has new lines in its label) + long styleOld = ::GetWindowLong(hwnd, GWL_STYLE), + styleNew; + if ( label.find(wxT('\n')) != wxString::npos ) + styleNew = styleOld | BS_MULTILINE; + else + styleNew = styleOld & ~BS_MULTILINE; + + if ( styleNew != styleOld ) + ::SetWindowLong(hwnd, GWL_STYLE, styleNew); +} + +wxSize wxMSWButton::GetFittingSize(wxWindow *win, + const wxSize& sizeLabel, + int flags) { - if (param == BN_CLICKED || (param == 1)) // 1 for accelerator - { - wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id); + // FIXME: this is pure guesswork, need to retrieve the real button margins + wxSize sizeBtn = sizeLabel; + + sizeBtn.x += 3*win->GetCharWidth(); + sizeBtn.y = 11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(sizeLabel.y)/10; + + // account for the shield UAC icon if we have it + if ( flags & Size_AuthNeeded ) + sizeBtn.x += wxSystemSettings::GetMetric(wxSYS_SMALLICON_X); + + return sizeBtn; +} + +wxSize wxMSWButton::ComputeBestSize(wxControl *btn, int flags) +{ + wxClientDC dc(btn); + + wxSize sizeBtn; + dc.GetMultiLineTextExtent(btn->GetLabelText(), &sizeBtn.x, &sizeBtn.y); + + sizeBtn = GetFittingSize(btn, sizeBtn, flags); + + // all buttons have at least the standard size unless the user explicitly + // wants them to be of smaller size and used wxBU_EXACTFIT style when + // creating the button + if ( !btn->HasFlag(wxBU_EXACTFIT) ) + { + // The size of a standard button in the dialog units is 50x14, use it. + // Note that we intentionally don't use GetDefaultSize() here, because + // it's inexact -- dialog units depend on this dialog's font. + wxSize sizeDef = btn->ConvertDialogToPixels(wxSize(50, 14)); + if ( sizeBtn.x < sizeDef.x ) + sizeBtn.x = sizeDef.x; + if ( sizeBtn.y < sizeDef.y ) + sizeBtn.y = sizeDef.y; + } + + btn->CacheBestSize(sizeBtn); + + return sizeBtn; +} + +// ---------------------------------------------------------------------------- +// creation/destruction +// ---------------------------------------------------------------------------- + +bool wxButton::Create(wxWindow *parent, + wxWindowID id, + const wxString& lbl, + const wxPoint& pos, + const wxSize& size, + long style, + const wxValidator& validator, + const wxString& name) +{ + m_authNeeded = false; + + wxString label(lbl); + if (label.empty() && wxIsStockID(id)) + { + // On Windows, some buttons aren't supposed to have mnemonics + label = wxGetStockLabel + ( + id, + id == wxID_OK || id == wxID_CANCEL || id == wxID_CLOSE + ? wxSTOCK_NOFLAGS + : wxSTOCK_WITH_MNEMONIC + ); + } + + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return false; + + WXDWORD exstyle; + WXDWORD msStyle = MSWGetStyle(style, &exstyle); + + // if the label contains several lines we must explicitly tell the button + // about it or it wouldn't draw it correctly ("\n"s would just appear as + // black boxes) + // + // NB: we do it here and not in MSWGetStyle() because we need the label + // value and the label is not set yet when MSWGetStyle() is called + msStyle |= wxMSWButton::GetMultilineStyle(label); + + return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, exstyle); +} + +wxButton::~wxButton() +{ + wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow); + if ( tlw && tlw->GetTmpDefaultItem() == this ) + { + UnsetTmpDefault(); + } + + delete m_imageData; +} + +// ---------------------------------------------------------------------------- +// flags +// ---------------------------------------------------------------------------- + +WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const +{ + // buttons never have an external border, they draw their own one + WXDWORD msStyle = wxControl::MSWGetStyle + ( + (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle + ); + + // we must use WS_CLIPSIBLINGS with the buttons or they would draw over + // each other in any resizeable dialog which has more than one button in + // the bottom + msStyle |= WS_CLIPSIBLINGS; + + // don't use "else if" here: weird as it is, but you may combine wxBU_LEFT + // and wxBU_RIGHT to get BS_CENTER! + if ( style & wxBU_LEFT ) + msStyle |= BS_LEFT; + if ( style & wxBU_RIGHT ) + msStyle |= BS_RIGHT; + if ( style & wxBU_TOP ) + msStyle |= BS_TOP; + if ( style & wxBU_BOTTOM ) + msStyle |= BS_BOTTOM; +#ifndef __WXWINCE__ + // flat 2d buttons + if ( style & wxNO_BORDER ) + msStyle |= BS_FLAT; +#endif // __WXWINCE__ + + return msStyle; +} + +void wxButton::SetLabel(const wxString& label) +{ + wxMSWButton::UpdateMultilineStyle(GetHwnd(), label); + + wxButtonBase::SetLabel(label); +} + +// ---------------------------------------------------------------------------- +// size management including autosizing +// ---------------------------------------------------------------------------- + +void wxButton::AdjustForBitmapSize(wxSize &size) const +{ + if ( !m_imageData ) + return; + + // account for the bitmap size + const wxSize sizeBmp = m_imageData->GetBitmap(State_Normal).GetSize(); + const wxDirection dirBmp = m_imageData->GetBitmapPosition(); + if ( dirBmp == wxLEFT || dirBmp == wxRIGHT ) + { + size.x += sizeBmp.x; + if ( sizeBmp.y > size.y ) + size.y = sizeBmp.y; + } + else // bitmap on top/below the text + { + size.y += sizeBmp.y; + if ( sizeBmp.x > size.x ) + size.x = sizeBmp.x; + } + + // account for the user-specified margins + size += 2*m_imageData->GetBitmapMargins(); + + // and also for the margins we always add internally (unless we have no + // border at all in which case the button has exactly the same size as + // bitmap and so no margins should be used) + if ( !HasFlag(wxBORDER_NONE) ) + { + int marginH = 0, + marginV = 0; +#if wxUSE_UXTHEME + if ( wxUxThemeEngine::GetIfActive() ) + { + wxUxThemeHandle theme(const_cast(this), L"BUTTON"); + + MARGINS margins; + wxUxThemeEngine::Get()->GetThemeMargins(theme, NULL, + BP_PUSHBUTTON, + PBS_NORMAL, + TMT_CONTENTMARGINS, + NULL, + &margins); + + // XP doesn't draw themed buttons correctly when the client + // area is smaller than 8x8 - enforce this minimum size for + // small bitmaps + size.IncTo(wxSize(8, 8)); + + marginH = margins.cxLeftWidth + margins.cxRightWidth + + 2*XP_BUTTON_EXTRA_MARGIN; + marginV = margins.cyTopHeight + margins.cyBottomHeight + + 2*XP_BUTTON_EXTRA_MARGIN; + } + else +#endif // wxUSE_UXTHEME + { + marginH = + marginV = OD_BUTTON_MARGIN; + } + + size.IncBy(marginH, marginV); + } +} + +wxSize wxButton::DoGetBestSize() const +{ + wxSize size; + + // account for the text part if we have it or if we don't have any image at + // all (buttons initially created with empty label should still have a non + // zero size) + if ( ShowsLabel() || !m_imageData ) + { + int flags = 0; + if ( GetAuthNeeded() ) + flags |= wxMSWButton::Size_AuthNeeded; + + size = wxMSWButton::ComputeBestSize(const_cast(this), flags); + } + + if ( m_imageData ) + { + AdjustForBitmapSize(size); + + CacheBestSize(size); + } + + return size; +} + +/* static */ +wxSize wxButtonBase::GetDefaultSize() +{ + static wxSize s_sizeBtn; + + if ( s_sizeBtn.x == 0 ) + { + wxScreenDC dc; + dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT)); + + // The size of a standard button in the dialog units is 50x14, + // translate this to pixels. + // + // 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. + // + // NB: wxMulDivInt32() is used, because it correctly rounds the result + + const wxSize base = wxPrivate::GetAverageASCIILetterSize(dc); + s_sizeBtn.x = wxMulDivInt32(50, base.x, 4); + s_sizeBtn.y = wxMulDivInt32(14, base.y, 8); + } + + return s_sizeBtn; +} + +// ---------------------------------------------------------------------------- +// default button handling +// ---------------------------------------------------------------------------- + +/* + The comment below and all this code is probably due to not using WM_NEXTDLGCTL + message when changing focus (but just SetFocus() which is not enough), see + http://blogs.msdn.com/oldnewthing/archive/2004/08/02/205624.aspx for the + full explanation. + + TODO: Do use WM_NEXTDLGCTL and get rid of all this code. + + + "Everything you ever wanted to know about the default buttons" or "Why do we + have to do all this?" + + In MSW the default button should be activated when the user presses Enter + and the current control doesn't process Enter itself somehow. This is + handled by ::DefWindowProc() (or maybe ::DefDialogProc()) using DM_SETDEFID + Another aspect of "defaultness" is that the default button has different + appearance: this is due to BS_DEFPUSHBUTTON style which is completely + separate from DM_SETDEFID stuff (!). Also note that BS_DEFPUSHBUTTON should + be unset if our parent window is not active so it should be unset whenever + we lose activation and set back when we regain it. + + Final complication is that when a button is active, it should be the default + one, i.e. pressing Enter on a button always activates it and not another + one. + + We handle this by maintaining a permanent and a temporary default items in + wxControlContainer (both may be NULL). When a button becomes the current + control (i.e. gets focus) it sets itself as the temporary default which + ensures that it has the right appearance and that Enter will be redirected + to it. When the button loses focus, it unsets the temporary default and so + the default item will be the permanent default -- that is the default button + if any had been set or none otherwise, which is just what we want. + + NB: all this is quite complicated by now and the worst is that normally + it shouldn't be necessary at all as for the normal Windows programs + DefWindowProc() and IsDialogMessage() take care of all this + automatically -- however in wxWidgets programs this doesn't work for + nested hierarchies (i.e. a notebook inside a notebook) for unknown + reason and so we have to reproduce all this code ourselves. It would be + very nice if we could avoid doing it. + */ + +// set this button as the (permanently) default one in its panel +wxWindow *wxButton::SetDefault() +{ + // set this one as the default button both for wxWidgets ... + wxWindow *winOldDefault = wxButtonBase::SetDefault(); + + // ... and Windows + SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false); + SetDefaultStyle(this, true); + + return winOldDefault; +} + +// return the top level parent window if it's not being deleted yet, otherwise +// return NULL +static wxTopLevelWindow *GetTLWParentIfNotBeingDeleted(wxWindow *win) +{ + for ( ;; ) + { + // IsTopLevel() will return false for a wxTLW being deleted, so we also + // need the parent test for this case + wxWindow * const parent = win->GetParent(); + if ( !parent || win->IsTopLevel() ) + { + if ( win->IsBeingDeleted() ) + return NULL; + + break; + } + + win = parent; + } + + wxASSERT_MSG( win, wxT("button without top level parent?") ); + + wxTopLevelWindow * const tlw = wxDynamicCast(win, wxTopLevelWindow); + wxASSERT_MSG( tlw, wxT("logic error in GetTLWParentIfNotBeingDeleted()") ); + + return tlw; +} + +// set this button as being currently default +void wxButton::SetTmpDefault() +{ + wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent()); + if ( !tlw ) + return; + + wxWindow *winOldDefault = tlw->GetDefaultItem(); + tlw->SetTmpDefaultItem(this); + + SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false); + SetDefaultStyle(this, true); +} + +// unset this button as currently default, it may still stay permanent default +void wxButton::UnsetTmpDefault() +{ + wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent()); + if ( !tlw ) + return; + + tlw->SetTmpDefaultItem(NULL); + + wxWindow *winOldDefault = tlw->GetDefaultItem(); + + SetDefaultStyle(this, false); + SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), true); +} + +/* static */ +void +wxButton::SetDefaultStyle(wxButton *btn, bool on) +{ + // we may be called with NULL pointer -- simpler to do the check here than + // in the caller which does wxDynamicCast() + if ( !btn ) + return; + + // first, let DefDlgProc() know about the new default button + if ( on ) + { + // we shouldn't set BS_DEFPUSHBUTTON for any button if we don't have + // focus at all any more + if ( !wxTheApp->IsActive() ) + return; + + wxWindow * const tlw = wxGetTopLevelParent(btn); + wxCHECK_RET( tlw, wxT("button without top level window?") ); + + ::SendMessage(GetHwndOf(tlw), DM_SETDEFID, btn->GetId(), 0L); + + // sending DM_SETDEFID also changes the button style to + // BS_DEFPUSHBUTTON so there is nothing more to do + } + + // then also change the style as needed + long style = ::GetWindowLong(GetHwndOf(btn), GWL_STYLE); + if ( !(style & BS_DEFPUSHBUTTON) == on ) + { + // don't do it with the owner drawn buttons because it will + // reset BS_OWNERDRAW style bit too (as BS_OWNERDRAW & + // BS_DEFPUSHBUTTON != 0)! + if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW ) + { + ::SendMessage(GetHwndOf(btn), BM_SETSTYLE, + on ? style | BS_DEFPUSHBUTTON + : style & ~BS_DEFPUSHBUTTON, + 1L /* redraw */); + } + else // owner drawn + { + // redraw the button - it will notice itself that it's + // [not] the default one [any longer] + btn->Refresh(); + } + } + //else: already has correct style +} + +// ---------------------------------------------------------------------------- +// helpers +// ---------------------------------------------------------------------------- + +bool wxButton::SendClickEvent() +{ + wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId()); event.SetEventObject(this); + + return ProcessCommand(event); +} + +void wxButton::Command(wxCommandEvent & event) +{ ProcessCommand(event); - return TRUE; - } - else return FALSE; } -bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label, - const wxPoint& pos, - const wxSize& size, long style, - const wxValidator& validator, - const wxString& name) +// ---------------------------------------------------------------------------- +// event/message handlers +// ---------------------------------------------------------------------------- + +bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) { - SetName(name); - SetValidator(validator); + bool processed = false; + switch ( param ) + { + // NOTE: Apparently older versions (NT 4?) of the common controls send + // BN_DOUBLECLICKED but not a second BN_CLICKED for owner-drawn + // buttons, so in order to send two EVT_BUTTON events we should + // catch both types. Currently (Feb 2003) up-to-date versions of + // win98, win2k and winXP all send two BN_CLICKED messages for + // all button types, so we don't catch BN_DOUBLECLICKED anymore + // in order to not get 3 EVT_BUTTON events. If this is a problem + // then we need to figure out which version of the comctl32 changed + // this behaviour and test for it. - parent->AddChild((wxButton *)this); - m_backgroundColour = parent->GetDefaultBackgroundColour() ; - m_foregroundColour = parent->GetDefaultForegroundColour() ; + case 1: // message came from an accelerator + case BN_CLICKED: // normal buttons send this + processed = SendClickEvent(); + break; + } - m_windowStyle = (long&)style; + return processed; +} - int x = pos.x; - int y = pos.y; - int width = size.x; - int height = size.y; +WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) +{ + // when we receive focus, we want to temporarily become the default button in + // our parent panel so that pressing "Enter" would activate us -- and when + // losing it we should restore the previous default button as well + if ( nMsg == WM_SETFOCUS ) + { + SetTmpDefault(); - if (id == -1) - m_windowId = NewControlId(); - else - m_windowId = id; + // let the default processing take place too + } + else if ( nMsg == WM_KILLFOCUS ) + { + UnsetTmpDefault(); + } + else if ( nMsg == WM_LBUTTONDBLCLK ) + { + // emulate a click event to force an owner-drawn button to change its + // appearance - without this, it won't do it + (void)wxControl::MSWWindowProc(WM_LBUTTONDOWN, wParam, lParam); - DWORD exStyle = MakeExtendedStyle(m_windowStyle); - HWND wx_button = - CreateWindowEx(exStyle, "BUTTON", label, BS_PUSHBUTTON | WS_TABSTOP | WS_CHILD, - 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); + // and continue with processing the message normally as well + } +#if wxUSE_UXTHEME + else if ( nMsg == WM_THEMECHANGED ) + { + // need to recalculate the best size here + // as the theme size might have changed + InvalidateBestSize(); + } +#endif // wxUSE_UXTHEME + // must use m_mouseInWindow here instead of IsMouseInWindow() + // since we need to know the first time the mouse enters the window + // and IsMouseInWindow() would return true in this case + else if ( (nMsg == WM_MOUSEMOVE && !m_mouseInWindow) || + nMsg == WM_MOUSELEAVE ) + { + if ( + IsEnabled() && + ( +#if wxUSE_UXTHEME + wxUxThemeEngine::GetIfActive() || +#endif // wxUSE_UXTHEME + (m_imageData && m_imageData->GetBitmap(State_Current).IsOk()) + ) + ) + { + Refresh(); + } + } -#if CTL3D -// if (!(GetParent()->GetWindowStyleFlag() & wxUSER_COLOURS)) -// Ctl3dSubclassCtl(wx_button); -#endif + // let the base class do all real processing + return wxControl::MSWWindowProc(nMsg, wParam, lParam); +} - m_hWnd = (WXHWND)wx_button; +// ---------------------------------------------------------------------------- +// authentication needed handling +// ---------------------------------------------------------------------------- - // Subclass again for purposes of dialog editing mode - SubclassWin((WXHWND)wx_button); +bool wxButton::DoGetAuthNeeded() const +{ + return m_authNeeded; +} - SetFont(* parent->GetFont()); +void wxButton::DoSetAuthNeeded(bool show) +{ + // show/hide UAC symbol on Windows Vista and later + if ( wxGetWinVersion() >= wxWinVersion_6 ) + { + m_authNeeded = show; + ::SendMessage(GetHwnd(), BCM_SETSHIELD, 0, show); + InvalidateBestSize(); + } +} - SetSize(x, y, width, height); - ShowWindow(wx_button, SW_SHOW); +// ---------------------------------------------------------------------------- +// button images +// ---------------------------------------------------------------------------- - return TRUE; +wxBitmap wxButton::DoGetBitmap(State which) const +{ + return m_imageData ? m_imageData->GetBitmap(which) : wxBitmap(); } -void wxButton::SetSize(int x, int y, int width, int height, int sizeFlags) +void wxButton::DoSetBitmap(const wxBitmap& bitmap, State which) { - int currentX, currentY; - GetPosition(¤tX, ¤tY); - int x1 = x; - int y1 = y; - if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - x1 = currentX; - if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - y1 = currentY; + // allocate the image data when the first bitmap is set + if ( !m_imageData ) + { +#if wxUSE_UXTHEME + // using image list doesn't work correctly if we don't have any label + // (even if we use BUTTON_IMAGELIST_ALIGN_CENTER alignment and + // BS_BITMAP style), at least under Windows 2003 so use owner drawn + // strategy for bitmap-only buttons + if ( ShowsLabel() && wxUxThemeEngine::GetIfActive() ) + { + m_imageData = new wxXPButtonImageData(this, bitmap); + } + else +#endif // wxUSE_UXTHEME + { + m_imageData = new wxODButtonImageData(this, bitmap); + MakeOwnerDrawn(); + } + } + else + { + m_imageData->SetBitmap(bitmap, which); + } - AdjustForParentClientOrigin(x1, y1, sizeFlags); + // it should be enough to only invalidate the best size when the normal + // bitmap changes as all bitmaps assigned to the button should be of the + // same size anyhow + if ( which == State_Normal ) + InvalidateBestSize(); - int actualWidth = width; - int actualHeight = height; - int ww, hh; - GetSize(&ww, &hh); + Refresh(); +} - int current_width; - int cyf; - char buf[300]; - GetWindowText((HWND) GetHWND(), buf, 300); - GetTextExtent(buf, ¤t_width, &cyf,NULL,NULL,GetFont()); +wxSize wxButton::DoGetBitmapMargins() const +{ + return m_imageData ? m_imageData->GetBitmapMargins() : wxSize(0, 0); +} - // If we're prepared to use the existing width, then... - if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH)) - actualWidth = ww; - else if (width == -1) - { - int cx; - int cy; - wxGetCharSize(GetHWND(), &cx, &cy,GetFont()); - actualWidth = (int)(current_width + 3*cx) ; - } - - // If we're prepared to use the existing height, then... - if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT)) - actualHeight = hh; - else if (height == -1) - { - actualHeight = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cyf); - } +void wxButton::DoSetBitmapMargins(wxCoord x, wxCoord y) +{ + wxCHECK_RET( m_imageData, "SetBitmap() must be called first" ); - MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE); + m_imageData->SetBitmapMargins(x, y); + InvalidateBestSize(); } -void wxButton::SetDefault(void) +void wxButton::DoSetBitmapPosition(wxDirection dir) { - wxWindow *parent = (wxWindow *)GetParent(); - if (parent) - parent->SetDefaultItem(this); - - if (parent) - { - SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L); - } + wxCHECK_RET( m_imageData, "SetBitmap() must be called first" ); - SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L); + m_imageData->SetBitmapPosition(dir); + InvalidateBestSize(); } -wxString wxButton::GetLabel(void) const +// ---------------------------------------------------------------------------- +// owner-drawn buttons support +// ---------------------------------------------------------------------------- + +// drawing helpers +namespace +{ + +// return the button state using both the ODS_XXX flags specified in state +// parameter and the current button state +wxButton::State GetButtonState(wxButton *btn, UINT state) { - GetWindowText((HWND) GetHWND(), wxBuffer, 300); - return wxString(wxBuffer); + if ( state & ODS_DISABLED ) + return wxButton::State_Disabled; + + if ( state & ODS_SELECTED ) + return wxButton::State_Pressed; + + if ( btn->HasCapture() || btn->IsMouseInWindow() ) + return wxButton::State_Current; + + if ( state & ODS_FOCUS ) + return wxButton::State_Focused; + + return wxButton::State_Normal; } -void wxButton::SetLabel(const wxString& label) +void DrawButtonText(HDC hdc, + RECT *pRect, + const wxString& text, + COLORREF col, + int flags) { - SetWindowText((HWND) GetHWND(), (const char *) label); + wxTextColoursChanger changeFg(hdc, col, CLR_INVALID); + wxBkModeChanger changeBkMode(hdc, wxBRUSHSTYLE_TRANSPARENT); + + // center text horizontally in any case + flags |= DT_CENTER; + + if ( text.find(wxT('\n')) != wxString::npos ) + { + // draw multiline label + + // first we need to compute its bounding rect + RECT rc; + ::CopyRect(&rc, pRect); + ::DrawText(hdc, text.wx_str(), text.length(), &rc, + DT_CENTER | DT_CALCRECT); + + // now center this rect inside the entire button area + const LONG w = rc.right - rc.left; + const LONG h = rc.bottom - rc.top; + rc.left = (pRect->right - pRect->left)/2 - w/2; + rc.right = rc.left+w; + rc.top = (pRect->bottom - pRect->top)/2 - h/2; + rc.bottom = rc.top+h; + + ::DrawText(hdc, text.wx_str(), text.length(), &rc, flags); + } + else // single line label + { + // centre text vertically too (notice that we must have DT_SINGLELINE + // for DT_VCENTER to work) + ::DrawText(hdc, text.wx_str(), text.length(), pRect, + flags | DT_SINGLELINE | DT_VCENTER); + } } -WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, - WXUINT message, WXWPARAM wParam, WXLPARAM lParam) +void DrawRect(HDC hdc, const RECT& r) { + wxDrawLine(hdc, r.left, r.top, r.right, r.top); + wxDrawLine(hdc, r.right, r.top, r.right, r.bottom); + wxDrawLine(hdc, r.right, r.bottom, r.left, r.bottom); + wxDrawLine(hdc, r.left, r.bottom, r.left, r.top); +} + /* - WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam); -// ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT)); - ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), - GetForegroundColour().Blue())); + The button frame looks like this normally: + + WWWWWWWWWWWWWWWWWWB + WHHHHHHHHHHHHHHHHGB W = white (HILIGHT) + WH GB H = light grey (LIGHT) + WH GB G = dark grey (SHADOW) + WH GB B = black (DKSHADOW) + WH GB + WGGGGGGGGGGGGGGGGGB + BBBBBBBBBBBBBBBBBBB + + When the button is selected, the button becomes like this (the total button + size doesn't change): + + BBBBBBBBBBBBBBBBBBB + BWWWWWWWWWWWWWWWWBB + BWHHHHHHHHHHHHHHGBB + BWH GBB + BWH GBB + BWGGGGGGGGGGGGGGGBB + BBBBBBBBBBBBBBBBBBB + BBBBBBBBBBBBBBBBBBB - return hBrush; + When the button is pushed (while selected) it is like: + + BBBBBBBBBBBBBBBBBBB + BGGGGGGGGGGGGGGGGGB + BG GB + BG GB + BG GB + BG GB + BGGGGGGGGGGGGGGGGGB + BBBBBBBBBBBBBBBBBBB */ - // This doesn't in fact seem to make any difference at all - buttons are always - // the same colour. - ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue())); - ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue())); +void DrawButtonFrame(HDC hdc, RECT& rectBtn, + bool selected, bool pushed) +{ + RECT r; + CopyRect(&r, &rectBtn); + + AutoHPEN hpenBlack(GetSysColor(COLOR_3DDKSHADOW)), + hpenGrey(GetSysColor(COLOR_3DSHADOW)), + hpenLightGr(GetSysColor(COLOR_3DLIGHT)), + hpenWhite(GetSysColor(COLOR_3DHILIGHT)); + + SelectInHDC selectPen(hdc, hpenBlack); + + r.right--; + r.bottom--; + + if ( pushed ) + { + DrawRect(hdc, r); + + (void)SelectObject(hdc, hpenGrey); + ::InflateRect(&r, -1, -1); + + DrawRect(hdc, r); + } + else // !pushed + { + if ( selected ) + { + DrawRect(hdc, r); + + ::InflateRect(&r, -1, -1); + } + + wxDrawLine(hdc, r.left, r.bottom, r.right, r.bottom); + wxDrawLine(hdc, r.right, r.bottom, r.right, r.top - 1); + + (void)SelectObject(hdc, hpenWhite); + wxDrawLine(hdc, r.left, r.bottom - 1, r.left, r.top); + wxDrawLine(hdc, r.left, r.top, r.right, r.top); + + (void)SelectObject(hdc, hpenLightGr); + wxDrawLine(hdc, r.left + 1, r.bottom - 2, r.left + 1, r.top + 1); + wxDrawLine(hdc, r.left + 1, r.top + 1, r.right - 1, r.top + 1); + + (void)SelectObject(hdc, hpenGrey); + wxDrawLine(hdc, r.left + 1, r.bottom - 1, r.right - 1, r.bottom - 1); + wxDrawLine(hdc, r.right - 1, r.bottom - 1, r.right - 1, r.top); + } + + InflateRect(&rectBtn, -OD_BUTTON_MARGIN, -OD_BUTTON_MARGIN); +} + +#if wxUSE_UXTHEME +void DrawXPBackground(wxButton *button, HDC hdc, RECT& rectBtn, UINT state) +{ + wxUxThemeHandle theme(button, L"BUTTON"); + + // this array is indexed by wxButton::State values and so must be kept in + // sync with it + static const int uxStates[] = + { + PBS_NORMAL, PBS_HOT, PBS_PRESSED, PBS_DISABLED, PBS_DEFAULTED + }; + + int iState = uxStates[GetButtonState(button, state)]; + + wxUxThemeEngine * const engine = wxUxThemeEngine::Get(); + + // draw parent background if needed + if ( engine->IsThemeBackgroundPartiallyTransparent + ( + theme, + BP_PUSHBUTTON, + iState + ) ) + { + engine->DrawThemeParentBackground(GetHwndOf(button), hdc, &rectBtn); + } + + // draw background + engine->DrawThemeBackground(theme, hdc, BP_PUSHBUTTON, iState, + &rectBtn, NULL); + + // calculate content area margins + MARGINS margins; + engine->GetThemeMargins(theme, hdc, BP_PUSHBUTTON, iState, + TMT_CONTENTMARGINS, &rectBtn, &margins); + ::InflateRect(&rectBtn, -margins.cxLeftWidth, -margins.cyTopHeight); + ::InflateRect(&rectBtn, -XP_BUTTON_EXTRA_MARGIN, -XP_BUTTON_EXTRA_MARGIN); + + if ( button->UseBgCol() ) + { + COLORREF colBg = wxColourToRGB(button->GetBackgroundColour()); + AutoHBRUSH hbrushBackground(colBg); + + // don't overwrite the focus rect + RECT rectClient; + ::CopyRect(&rectClient, &rectBtn); + ::InflateRect(&rectClient, -1, -1); + FillRect(hdc, &rectClient, hbrushBackground); + } +} +#endif // wxUSE_UXTHEME + +} // anonymous namespace - wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID); +// ---------------------------------------------------------------------------- +// owner drawn buttons support +// ---------------------------------------------------------------------------- - // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush - // has a zero usage count. - // NOT NOW; CHANGED. -// backgroundBrush->RealizeResource(); - return (WXHBRUSH) backgroundBrush->GetResourceHandle(); +void wxButton::MakeOwnerDrawn() +{ + long style = GetWindowLong(GetHwnd(), GWL_STYLE); + if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW ) + { + // make it so + style |= BS_OWNERDRAW; + SetWindowLong(GetHwnd(), GWL_STYLE, style); + } +} + +bool wxButton::SetBackgroundColour(const wxColour &colour) +{ + if ( !wxControl::SetBackgroundColour(colour) ) + { + // nothing to do + return false; + } + + MakeOwnerDrawn(); + + Refresh(); + + return true; +} + +bool wxButton::SetForegroundColour(const wxColour &colour) +{ + if ( !wxControl::SetForegroundColour(colour) ) + { + // nothing to do + return false; + } + + MakeOwnerDrawn(); + + Refresh(); + + return true; } -void wxButton::Command (wxCommandEvent & event) +bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis) { - ProcessCommand (event); + LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis; + HDC hdc = lpDIS->hDC; + + UINT state = lpDIS->itemState; + bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0; + + RECT rectBtn; + CopyRect(&rectBtn, &lpDIS->rcItem); + + // draw the button background + if ( !HasFlag(wxBORDER_NONE) ) + { +#if wxUSE_UXTHEME + if ( wxUxThemeEngine::GetIfActive() ) + { + DrawXPBackground(this, hdc, rectBtn, state); + } + else +#endif // wxUSE_UXTHEME + { + COLORREF colBg = wxColourToRGB(GetBackgroundColour()); + + // first, draw the background + AutoHBRUSH hbrushBackground(colBg); + FillRect(hdc, &rectBtn, hbrushBackground); + + // draw the border for the current state + bool selected = (state & ODS_SELECTED) != 0; + if ( !selected ) + { + wxTopLevelWindow * + tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow); + if ( tlw ) + { + selected = tlw->GetDefaultItem() == this; + } + } + + DrawButtonFrame(hdc, rectBtn, selected, pushed); + } + + // draw the focus rectangle if we need it + if ( (state & ODS_FOCUS) && !(state & ODS_NOFOCUSRECT) ) + { + DrawFocusRect(hdc, &rectBtn); + +#if wxUSE_UXTHEME + if ( !wxUxThemeEngine::GetIfActive() ) +#endif // wxUSE_UXTHEME + { + if ( pushed ) + { + // the label is shifted by 1 pixel to create "pushed" effect + OffsetRect(&rectBtn, 1, 1); + } + } + } + } + + + // draw the image, if any + if ( m_imageData ) + { + wxBitmap bmp = m_imageData->GetBitmap(GetButtonState(this, state)); + if ( !bmp.IsOk() ) + bmp = m_imageData->GetBitmap(State_Normal); + + const wxSize sizeBmp = bmp.GetSize(); + const wxSize margin = m_imageData->GetBitmapMargins(); + const wxSize sizeBmpWithMargins(sizeBmp + 2*margin); + wxRect rectButton(wxRectFromRECT(rectBtn)); + + // for simplicity, we start with centred rectangle and then move it to + // the appropriate edge + wxRect rectBitmap = wxRect(sizeBmp).CentreIn(rectButton); + + // move bitmap only if we have a label, otherwise keep it centered + if ( ShowsLabel() ) + { + switch ( m_imageData->GetBitmapPosition() ) + { + default: + wxFAIL_MSG( "invalid direction" ); + // fall through + + case wxLEFT: + rectBitmap.x = rectButton.x + margin.x; + rectButton.x += sizeBmpWithMargins.x; + rectButton.width -= sizeBmpWithMargins.x; + break; + + case wxRIGHT: + rectBitmap.x = rectButton.GetRight() - sizeBmp.x - margin.x; + rectButton.width -= sizeBmpWithMargins.x; + break; + + case wxTOP: + rectBitmap.y = rectButton.y + margin.y; + rectButton.y += sizeBmpWithMargins.y; + rectButton.height -= sizeBmpWithMargins.y; + break; + + case wxBOTTOM: + rectBitmap.y = rectButton.GetBottom() - sizeBmp.y - margin.y; + rectButton.height -= sizeBmpWithMargins.y; + break; + } + } + + wxDCTemp dst((WXHDC)hdc); + dst.DrawBitmap(bmp, rectBitmap.GetPosition(), true); + + wxCopyRectToRECT(rectButton, rectBtn); + } + + + // finally draw the label + if ( ShowsLabel() ) + { + COLORREF colFg = state & ODS_DISABLED + ? ::GetSysColor(COLOR_GRAYTEXT) + : wxColourToRGB(GetForegroundColour()); + + // notice that DT_HIDEPREFIX doesn't work on old (pre-Windows 2000) + // systems but by happy coincidence ODS_NOACCEL is not used under them + // neither so DT_HIDEPREFIX should never be used there + DrawButtonText(hdc, &rectBtn, GetLabel(), colFg, + state & ODS_NOACCEL ? DT_HIDEPREFIX : 0); + } + + return true; } +#endif // wxUSE_BUTTON