Implement sending wxIconizeEvent in wxOSX.

Translate windowDid{Miniaturize,Deminiaturize} callbacks to calls to
SendIconizeEvent().

See #16718.

include/wx/osx/nonownedwnd.h

@@ -113,7 +113,8 @@ public:
     virtual void HandleResized( double timestampsec );
     virtual void HandleMoved( double timestampsec );
     virtual void HandleResizing( double timestampsec, wxRect* rect );
-    
+    virtual void HandleMiniaturize( double WXUNUSED(timestampsec), bool miniaturized );
+
     void WindowWasPainted();
 
     virtual bool Destroy();

include/wx/osx/toplevel.h

@@ -82,6 +82,9 @@ public:
 
     virtual void SetRepresentedFilename(const wxString& filename);
 
+    // do *not* call this to iconize the frame, this is a private function!
+    void OSXSetIconizeState(bool iconic);
+
 protected:
     // common part of all ctors
     void Init();
@@ -92,6 +95,7 @@ protected:
     // should the frame be maximized when it will be shown? set by Maximize()
     // when it is called while the frame is hidden
     bool m_maximizeOnShow;
+
 private :
     wxDECLARE_EVENT_TABLE();
 };

interface/wx/event.h

@@ -4263,8 +4263,6 @@ public:
 
     An event being sent when the frame is iconized (minimized) or restored.
 
-    Currently only wxMSW and wxGTK generate such events.
-
     @onlyfor{wxmsw,wxgtk}
 
     @beginEventTable{wxIconizeEvent}

src/osx/cocoa/nonownedwnd.mm

@@ -322,6 +322,8 @@ static NSResponder* s_formerFirstResponder = NULL;
 - (void)windowDidResignKey:(NSNotification *)notification;
 - (void)windowDidBecomeKey:(NSNotification *)notification;
 - (void)windowDidMove:(NSNotification *)notification;
+- (void)windowDidMiniaturize:(NSNotification *)notification;
+- (void)windowDidDeminiaturize:(NSNotification *)notification;
 - (BOOL)windowShouldClose:(id)window;
 - (BOOL)windowShouldZoom:(NSWindow *)window toFrame:(NSRect)newFrame;
 #if wxHAS_FULL_SCREEN_API
@@ -413,6 +415,28 @@ extern int wxOSXGetIdFromSelector(SEL action );
     [self triggerMenu:_cmd];
 }
 
+- (void)windowDidMiniaturize:(NSNotification *)notification
+{
+    NSWindow* window = (NSWindow*) [notification object];
+    wxNonOwnedWindowCocoaImpl* windowimpl = [window WX_implementation];
+    if ( windowimpl )
+    {
+        if ( wxNonOwnedWindow* wxpeer = windowimpl->GetWXPeer() )
+            wxpeer->HandleMiniaturize(0, [window isMiniaturized]);
+    }
+}
+
+- (void)windowDidDeminiaturize:(NSNotification *)notification
+{
+    NSWindow* window = (NSWindow*) [notification object];
+    wxNonOwnedWindowCocoaImpl* windowimpl = [window WX_implementation];
+    if ( windowimpl )
+    {
+        if ( wxNonOwnedWindow* wxpeer = windowimpl->GetWXPeer() )
+            wxpeer->HandleMiniaturize(0, [window isMiniaturized]);
+    }
+}
+
 - (BOOL)windowShouldClose:(id)nwindow
 {
     wxNonOwnedWindowCocoaImpl* windowimpl = [(NSWindow*) nwindow WX_implementation];

src/osx/nonownedwnd_osx.cpp

@@ -552,4 +552,12 @@ bool wxNonOwnedWindow::DoSetPathShape(const wxGraphicsPath& path)
     return DoSetRegionShape(wxRegion(bmp));
 }
 
+void
+wxNonOwnedWindow::HandleMiniaturize(double WXUNUSED(timestampsec),
+                                    bool miniaturized)
+{
+    if ( wxTopLevelWindowMac* top = (wxTopLevelWindowMac*) MacGetTopLevelWindow() )
+        top->OSXSetIconizeState(miniaturized);
+}
+
 #endif // wxUSE_GRAPHICS_CONTEXT

src/osx/toplevel_osx.cpp

@@ -229,3 +229,12 @@ void wxTopLevelWindowMac::SetRepresentedFilename(const wxString& filename)
 {
     m_nowpeer->SetRepresentedFilename(filename);
 }
+
+void wxTopLevelWindowMac::OSXSetIconizeState(bool iconize)
+{
+    if ( iconize != m_iconized )
+    {
+        m_iconized = iconize;
+        (void)SendIconizeEvent(iconize);
+    }
+}