X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9b59c95b38e05afd7e4abed239ae45d5fcc28645..87f0b1323b7ac77f02133b836c8dfee63b0fd387:/src/common/toplvcmn.cpp diff --git a/src/common/toplvcmn.cpp b/src/common/toplvcmn.cpp index 39e785a01c..e93cdc024f 100644 --- a/src/common/toplvcmn.cpp +++ b/src/common/toplvcmn.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: common/toplvcmn.cpp +// Name: src/common/toplvcmn.cpp // Purpose: common (for all platforms) wxTopLevelWindow functions // Author: Julian Smart, Vadim Zeitlin // Created: 01/02/97 @@ -16,10 +16,6 @@ // headers // ---------------------------------------------------------------------------- -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation "toplevelbase.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -27,12 +23,15 @@ #pragma hdrstop #endif +#include "wx/toplevel.h" + #ifndef WX_PRECOMP - #include "wx/toplevel.h" #include "wx/dcclient.h" #include "wx/app.h" #endif // WX_PRECOMP +#include "wx/display.h" + // ---------------------------------------------------------------------------- // event table // ---------------------------------------------------------------------------- @@ -46,7 +45,7 @@ END_EVENT_TABLE() // implementation // ============================================================================ -IMPLEMENT_DYNAMIC_CLASS(wxTopLevelWindow, wxWindow) +IMPLEMENT_ABSTRACT_CLASS(wxTopLevelWindow, wxWindow) // ---------------------------------------------------------------------------- // construction/destruction @@ -64,13 +63,39 @@ wxTopLevelWindowBase::~wxTopLevelWindowBase() if ( wxTheApp && wxTheApp->GetTopWindow() == this ) wxTheApp->SetTopWindow(NULL); - bool shouldExit = IsLastBeforeExit(); - wxTopLevelWindows.DeleteObject(this); - - if ( shouldExit ) + + // delete any our top level children which are still pending for deletion + // immediately: this could happen if a child (e.g. a temporary dialog + // created with this window as parent) was Destroy()'d) while this window + // was deleted directly (with delete, or maybe just because it was created + // on the stack) immediately afterwards and before the child TLW was really + // destroyed -- not destroying it now would leave it alive with a dangling + // parent pointer and result in a crash later + for ( wxObjectList::iterator i = wxPendingDelete.begin(); + i != wxPendingDelete.end(); + ) { - // then do it + wxWindow * const win = wxDynamicCast(*i, wxWindow); + if ( win && win->GetParent() == this ) + { + wxPendingDelete.erase(i); + + delete win; + + // deleting it invalidated the list (and not only one node because + // it could have resulted in deletion of other objects to) + i = wxPendingDelete.begin(); + } + else + { + ++i; + } + } + + if ( IsLastBeforeExit() ) + { + // no other (important) windows left, quit the app wxTheApp->ExitMainLoop(); } } @@ -82,54 +107,97 @@ bool wxTopLevelWindowBase::Destroy() if ( !wxPendingDelete.Member(this) ) wxPendingDelete.Append(this); - if (wxTopLevelWindows.GetCount() > 1) + // normally we want to hide the window immediately so that it doesn't get + // stuck on the screen while it's being destroyed, however we shouldn't + // hide the last visible window as then we might not get any idle events + // any more as no events will be sent to the hidden window and without idle + // events we won't prune wxPendingDelete list and the application won't + // terminate + for ( wxWindowList::const_iterator i = wxTopLevelWindows.begin(), + end = wxTopLevelWindows.end(); + i != end; + ++i ) { - // Hide it immediately. This should - // not be done if this TLW is the - // only one left since we then would - // risk not to get any idle events - // at all anymore during which we - // could delete any pending events. - Hide(); + wxTopLevelWindow * const win = static_cast(*i); + if ( win != this && win->IsShown() ) + { + // there remains at least one other visible TLW, we can hide this + // one + Hide(); + + break; + } } - return TRUE; + return true; } bool wxTopLevelWindowBase::IsLastBeforeExit() const { - // we exit the application if there are no more top level windows left - // normally but wxApp can prevent this from happening - return wxTopLevelWindows.GetCount() == 1 && - wxTopLevelWindows.GetFirst()->GetData() == (wxWindow *)this && - wxTheApp && wxTheApp->GetExitOnFrameDelete(); + // first of all, automatically exiting the app on last window close can be + // completely disabled at wxTheApp level + if ( !wxTheApp || !wxTheApp->GetExitOnFrameDelete() ) + return false; + + wxWindowList::const_iterator i; + const wxWindowList::const_iterator end = wxTopLevelWindows.end(); + + // then decide whether we should exit at all + for ( i = wxTopLevelWindows.begin(); i != end; ++i ) + { + wxTopLevelWindow * const win = static_cast(*i); + if ( win->ShouldPreventAppExit() ) + { + // there remains at least one important TLW, don't exit + return false; + } + } + + // if yes, close all the other windows: this could still fail + for ( i = wxTopLevelWindows.begin(); i != end; ++i ) + { + // don't close twice the windows which are already marked for deletion + wxTopLevelWindow * const win = static_cast(*i); + if ( !wxPendingDelete.Member(win) && !win->Close() ) + { + // one of the windows refused to close, don't exit + // + // NB: of course, by now some other windows could have been already + // closed but there is really nothing we can do about it as we + // have no way just to ask the window if it can close without + // forcing it to do it + return false; + } + } + + return true; } // ---------------------------------------------------------------------------- // wxTopLevelWindow geometry // ---------------------------------------------------------------------------- -wxSize wxTopLevelWindowBase::GetMaxSize() const +void wxTopLevelWindowBase::SetMinSize(const wxSize& minSize) { - wxSize size( GetMaxWidth(), GetMaxHeight() ); - int w, h; - - wxClientDisplayRect( 0, 0, &w, &h ); - - if( size.GetWidth() == -1 ) - size.SetWidth( w ); + SetSizeHints(minSize, GetMaxSize()); +} - if( size.GetHeight() == -1 ) - size.SetHeight( h ); +void wxTopLevelWindowBase::SetMaxSize(const wxSize& maxSize) +{ + SetSizeHints(GetMinSize(), maxSize); +} - return size; +void wxTopLevelWindowBase::GetRectForTopLevelChildren(int *x, int *y, int *w, int *h) +{ + GetPosition(x,y); + GetSize(w,h); } /* static */ wxSize wxTopLevelWindowBase::GetDefaultSize() { wxSize size = wxGetClientDisplayRect().GetSize(); - +#ifndef __WXOSX_IPHONE__ // create proportionally bigger windows on small screens if ( size.x >= 1024 ) size.x = 400; @@ -145,10 +213,86 @@ wxSize wxTopLevelWindowBase::GetDefaultSize() size.y *= 2; size.y /= 3; } - +#endif return size; } +void wxTopLevelWindowBase::DoCentre(int dir) +{ + // on some platforms centering top level windows is impossible + // because they are always maximized by guidelines or limitations + // + // and centering a maximized window doesn't make sense as its position + // can't change + if ( IsAlwaysMaximized() || IsMaximized() ) + return; + + // we need the display rect anyhow so store it first: notice that we should + // be centered on the same display as our parent window, the display of + // this window itself is not really defined yet + int nDisplay = wxDisplay::GetFromWindow(GetParent() ? GetParent() : this); + wxDisplay dpy(nDisplay == wxNOT_FOUND ? 0 : nDisplay); + const wxRect rectDisplay(dpy.GetClientArea()); + + // what should we centre this window on? + wxRect rectParent; + if ( !(dir & wxCENTRE_ON_SCREEN) && GetParent() ) + { + // centre on parent window: notice that we need screen coordinates for + // positioning this TLW + rectParent = GetParent()->GetScreenRect(); + + // if the parent is entirely off screen (happens at least with MDI + // parent frame under Mac but could happen elsewhere too if the frame + // was hidden/moved away for some reason), don't use it as otherwise + // this window wouldn't be visible at all + if ( !rectParent.Intersects(rectDisplay) ) + { + // just centre on screen then + rectParent = rectDisplay; + } + } + else + { + // we were explicitly asked to centre this window on the entire screen + // or if we have no parent anyhow and so can't centre on it + rectParent = rectDisplay; + } + + if ( !(dir & wxBOTH) ) + dir |= wxBOTH; // if neither is specified, center in both directions + + // the new window rect candidate + wxRect rect = GetRect().CentreIn(rectParent, dir & ~wxCENTRE_ON_SCREEN); + + // we don't want to place the window off screen if Centre() is called as + // this is (almost?) never wanted and it would be very difficult to prevent + // it from happening from the user code if we didn't check for it here + if ( !rectDisplay.Contains(rect.GetTopLeft()) ) + { + // move the window just enough to make the corner visible + int dx = rectDisplay.GetLeft() - rect.GetLeft(); + int dy = rectDisplay.GetTop() - rect.GetTop(); + rect.Offset(dx > 0 ? dx : 0, dy > 0 ? dy : 0); + } + + if ( !rectDisplay.Contains(rect.GetBottomRight()) ) + { + // do the same for this corner too + int dx = rectDisplay.GetRight() - rect.GetRight(); + int dy = rectDisplay.GetBottom() - rect.GetBottom(); + rect.Offset(dx < 0 ? dx : 0, dy < 0 ? dy : 0); + } + + // the window top left and bottom right corner are both visible now and + // although the window might still be not entirely on screen (with 2 + // staggered displays for example) we wouldn't be able to improve the + // layout much in such case, so we stop here + + // -1 could be valid coordinate here if there are several displays + SetSize(rect, wxSIZE_ALLOW_MINUS_ONE); +} + // ---------------------------------------------------------------------------- // wxTopLevelWindow size management: we exclude the areas taken by // menu/status/toolbars from the client area, so the client area is what's @@ -180,6 +324,34 @@ void wxTopLevelWindowBase::DoClientToScreen(int *x, int *y) const wxWindow::DoClientToScreen(x, y); } +bool wxTopLevelWindowBase::IsAlwaysMaximized() const +{ +#if defined(__SMARTPHONE__) || defined(__POCKETPC__) + return true; +#else + return false; +#endif +} + +// ---------------------------------------------------------------------------- +// icons +// ---------------------------------------------------------------------------- + +wxIcon wxTopLevelWindowBase::GetIcon() const +{ + return m_icons.IsEmpty() ? wxIcon() : m_icons.GetIcon( -1 ); +} + +void wxTopLevelWindowBase::SetIcon(const wxIcon& icon) +{ + // passing wxNullIcon to SetIcon() is possible (it means that we shouldn't + // have any icon), but adding an invalid icon to wxIconBundle is not + wxIconBundle icons; + if ( icon.IsOk() ) + icons.AddIcon(icon); + + SetIcons(icons); +} // ---------------------------------------------------------------------------- // event handlers @@ -187,8 +359,16 @@ void wxTopLevelWindowBase::DoClientToScreen(int *x, int *y) const // default resizing behaviour - if only ONE subwindow, resize to fill the // whole client area -void wxTopLevelWindowBase::OnSize(wxSizeEvent& WXUNUSED(event)) +void wxTopLevelWindowBase::DoLayout() { + // We are called during the window destruction several times, e.g. as + // wxFrame tries to adjust to its tool/status bars disappearing. But + // actually doing the layout is pretty useless in this case as the window + // will disappear anyhow -- so just don't bother. + if ( IsBeingDeleted() ) + return; + + // if we're using constraints or sizers - do use them if ( GetAutoLayout() ) { @@ -197,7 +377,7 @@ void wxTopLevelWindowBase::OnSize(wxSizeEvent& WXUNUSED(event)) else { // do we have _exactly_ one child? - wxWindow *child = (wxWindow *)NULL; + wxWindow *child = NULL; for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); node; node = node->GetNext() ) @@ -219,21 +399,13 @@ void wxTopLevelWindowBase::OnSize(wxSizeEvent& WXUNUSED(event)) } // do we have any children at all? - if ( child ) + if ( child && child->IsShown() ) { // exactly one child - set it's size to fill the whole frame int clientW, clientH; DoGetClientSize(&clientW, &clientH); - // for whatever reasons, wxGTK wants to have a small offset - it - // probably looks better with it? -#ifdef __WXGTK__ - static const int ofs = 1; -#else - static const int ofs = 0; -#endif - - child->SetSize(ofs, ofs, clientW - 2*ofs, clientH - 2*ofs); + child->SetSize(0, 0, clientW, clientH); } } } @@ -255,9 +427,12 @@ bool wxTopLevelWindowBase::SendIconizeEvent(bool iconized) // do the window-specific processing after processing the update event void wxTopLevelWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event) { - if ( event.GetSetEnabled() ) - Enable(event.GetEnabled()); - + // call inherited, but skip the wxControl's version, and call directly the + // wxWindow's one instead, because the only reason why we are overriding this + // function is that we want to use SetTitle() instead of wxControl::SetLabel() + wxWindowBase::DoUpdateWindowUI(event); + + // update title if ( event.GetSetText() ) { if ( event.GetText() != GetTitle() ) @@ -265,9 +440,8 @@ void wxTopLevelWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event) } } -void wxTopLevelWindowBase::RequestUserAttention(int flags) +void wxTopLevelWindowBase::RequestUserAttention(int WXUNUSED(flags)) { // it's probably better than do nothing, isn't it? Raise(); } -