X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8520f1374ceec64abae3802984c4f8654d8836ba..9e96e16fe0bc7af32d329c965ad110a3e5be5ad8:/samples/dragimag/dragimag.cpp

diff --git a/samples/dragimag/dragimag.cpp b/samples/dragimag/dragimag.cpp
index 031940c99f..fc0755b6ff 100644
--- a/samples/dragimag/dragimag.cpp
+++ b/samples/dragimag/dragimag.cpp
@@ -91,7 +91,7 @@ void MyCanvas::OnEraseBackground(wxEraseEvent& event)
     {
         wxSize sz = GetClientSize();
         wxRect rect(0, 0, sz.x, sz.y);
-        
+
         if (event.GetDC())
         {
             wxGetApp().TileBitmap(rect, *(event.GetDC()), wxGetApp().GetBackgroundBitmap());
@@ -138,17 +138,13 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event)
         delete m_dragImage;
         m_dragImage = NULL;
 
-        wxClientDC dc(this);
-        if (m_currentlyHighlighted)
-        {
-            m_currentlyHighlighted->Draw(dc);
-        }
         m_draggedShape->SetShow(true);
-        m_draggedShape->Draw(dc);
 
         m_currentlyHighlighted = (DragShape*) NULL;
 
         m_draggedShape = (DragShape*) NULL;
+        
+        Refresh(true);
     }
     else if (event.Dragging() && m_dragMode != TEST_DRAG_NONE)
     {
@@ -170,33 +166,26 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event)
 
             // Erase the dragged shape from the canvas
             m_draggedShape->SetShow(false);
-            wxClientDC dc(this);
-            EraseShape(m_draggedShape, dc);
-            DrawShapes(dc);
+
+            // redraw immediately
+            Refresh(true);
+            Update();
 
             switch (m_draggedShape->GetDragMethod())
             {
                 case SHAPE_DRAG_BITMAP:
                 {
-                    m_dragImage = new wxDragImage(m_draggedShape->GetBitmap(), wxCursor(wxCURSOR_HAND));
+                    m_dragImage = new MyDragImage(this, m_draggedShape->GetBitmap(), wxCursor(wxCURSOR_HAND));
                     break;
                 }
                 case SHAPE_DRAG_TEXT:
                 {
-                    m_dragImage = new wxDragImage(wxString(_T("Dragging some test text")), wxCursor(wxCURSOR_HAND));
+                    m_dragImage = new MyDragImage(this, wxString(wxT("Dragging some test text")), wxCursor(wxCURSOR_HAND));
                     break;
                 }
                 case SHAPE_DRAG_ICON:
                 {
-                    // Can anyone explain why this test is necessary,
-                    // to prevent a gcc error?
-#if defined(__WXMOTIF__) || defined(__WXX11__)
-                    wxIcon icon(dragicon_xpm);
-#else
-                    wxIcon icon(wxICON(dragicon));
-#endif
-                    
-                    m_dragImage = new wxDragImage(icon, wxCursor(wxCURSOR_HAND));
+                    m_dragImage = new MyDragImage(this, wxICON(dragicon), wxCursor(wxCURSOR_HAND));
                     break;
                 }
             }
@@ -205,19 +194,19 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event)
 
             // The offset between the top-left of the shape image and the current shape position
             wxPoint beginDragHotSpot = m_dragStartPos - m_draggedShape->GetPosition();
-            
+
             // Now we do this inside the implementation: always assume
             // coordinates relative to the capture window (client coordinates)
 
             //if (fullScreen)
             //    beginDragHotSpot -= ClientToScreen(wxPoint(0, 0));
-            
+
             if (!m_dragImage->BeginDrag(beginDragHotSpot, this, fullScreen))
             {
                 delete m_dragImage;
                 m_dragImage = (wxDragImage*) NULL;
                 m_dragMode = TEST_DRAG_NONE;
-                
+
             } else
             {
                 m_dragImage->Move(event.GetPosition());
@@ -243,20 +232,18 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event)
 
             if (mustUnhighlightOld || mustHighlightNew)
                 m_dragImage->Hide();
-
+            
             // Now with the drag image switched off, we can change the window contents.
-
             if (mustUnhighlightOld)
-            {
-                wxClientDC clientDC(this);
-                m_currentlyHighlighted->Draw(clientDC);
                 m_currentlyHighlighted = (DragShape*) NULL;
-            }
+
             if (mustHighlightNew)
-            {
-                wxClientDC clientDC(this);
                 m_currentlyHighlighted = onShape;
-                m_currentlyHighlighted->Draw(clientDC, wxINVERT);
+
+            if (mustUnhighlightOld || mustHighlightNew)
+            {
+                Refresh(mustUnhighlightOld);
+                Update();
             }
 
             // Move and show the image again
@@ -274,8 +261,10 @@ void MyCanvas::DrawShapes(wxDC& dc)
     while (node)
     {
         DragShape* shape = (DragShape*) node->GetData();
-        if (shape->IsShown())
-          shape->Draw(dc);
+        if (shape->IsShown() && m_draggedShape != shape)
+        {
+            shape->Draw(dc, (m_currentlyHighlighted == shape));
+        }
         node = node->GetNext();
     }
 }
@@ -287,7 +276,7 @@ void MyCanvas::EraseShape(DragShape* shape, wxDC& dc)
 
     wxRect rect2(shape->GetRect());
     dc.SetClippingRegion(rect2.x, rect2.y, rect2.width, rect2.height);
-        
+
     wxGetApp().TileBitmap(rect, dc, wxGetApp().GetBackgroundBitmap());
 
     dc.DestroyClippingRegion();
@@ -327,26 +316,26 @@ BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 END_EVENT_TABLE()
 
 MyFrame::MyFrame()
-: wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxDragImage sample"),
+: wxFrame( (wxFrame *)NULL, wxID_ANY, wxT("wxDragImage sample"),
           wxPoint(20,20), wxSize(470,360) )
 {
     wxMenu *file_menu = new wxMenu();
-    file_menu->Append( wxID_ABOUT, _T("&About..."));
-    file_menu->AppendCheckItem( TEST_USE_SCREEN, _T("&Use whole screen for dragging"), _T("Use whole screen"));
-    file_menu->Append( wxID_EXIT, _T("E&xit"));
-    
+    file_menu->Append( wxID_ABOUT, wxT("&About..."));
+    file_menu->AppendCheckItem( TEST_USE_SCREEN, wxT("&Use whole screen for dragging"), wxT("Use whole screen"));
+    file_menu->Append( wxID_EXIT, wxT("E&xit"));
+
     wxMenuBar *menu_bar = new wxMenuBar();
-    menu_bar->Append(file_menu, _T("&File"));
+    menu_bar->Append(file_menu, wxT("&File"));
 
     SetIcon(wxICON(mondrian));
     SetMenuBar( menu_bar );
-    
+
 #if wxUSE_STATUSBAR
     CreateStatusBar(2);
     int widths[] = { -1, 100 };
     SetStatusWidths( 2, widths );
 #endif // wxUSE_STATUSBAR
-    
+
     m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
 }
 
@@ -357,9 +346,9 @@ void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 
 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 {
-    (void)wxMessageBox( _T("wxDragImage demo\n")
-        _T("Julian Smart (c) 2000"),
-        _T("About wxDragImage Demo"), 
+    (void)wxMessageBox( wxT("wxDragImage demo\n")
+        wxT("Julian Smart (c) 2000"),
+        wxT("About wxDragImage Demo"),
         wxICON_INFORMATION | wxOK );
 }
 
@@ -379,29 +368,29 @@ MyApp::MyApp()
 
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
 #if wxUSE_LIBPNG
     wxImage::AddHandler( new wxPNGHandler );
 #endif
 
     wxImage image;
-    if (image.LoadFile(_T("backgrnd.png"), wxBITMAP_TYPE_PNG))
+    if (image.LoadFile(wxT("backgrnd.png"), wxBITMAP_TYPE_PNG))
     {
         m_background = wxBitmap(image);
     }
 
     MyFrame *frame = new MyFrame();
 
-    wxString rootName(_T("shape0"));
+    wxString rootName(wxT("shape0"));
 
-    int i;
-    for (i = 1; i < 4; i++)
+    for (int i = 1; i < 4; i++)
     {
-        wxString filename;
-        filename.Printf(wxT("%s%d.png"), (const wxChar*)rootName, i);
     /* For some reason under wxX11, the 2nd LoadFile in this loop fails, with
        a BadMatch inside CreateFromImage (inside ConvertToBitmap). This happens even if you copy
        the first file over the second file. */
-        if (image.LoadFile(filename, wxBITMAP_TYPE_PNG))
+        if (image.LoadFile(wxString::Format("%s%d.png", rootName, i), wxBITMAP_TYPE_PNG))
         {
             DragShape* newShape = new DragShape(wxBitmap(image));
             newShape->SetPosition(wxPoint(i*50, i*50));
@@ -447,7 +436,7 @@ bool MyApp::TileBitmap(const wxRect& rect, wxDC& dc, wxBitmap& bitmap)
 {
     int w = bitmap.GetWidth();
     int h = bitmap.GetHeight();
-    
+
     int i, j;
     for (i = rect.x; i < rect.x + rect.width; i += w)
     {
@@ -473,25 +462,28 @@ DragShape::DragShape(const wxBitmap& bitmap)
     m_show = true;
 }
 
-DragShape::~DragShape()
-{
-}
-
 bool DragShape::HitTest(const wxPoint& pt) const
 {
     wxRect rect(GetRect());
-    return rect.Inside(pt.x, pt.y);
+    return rect.Contains(pt.x, pt.y);
 }
 
-bool DragShape::Draw(wxDC& dc, int op)
+bool DragShape::Draw(wxDC& dc, bool highlight)
 {
     if (m_bitmap.Ok())
     {
         wxMemoryDC memDC;
         memDC.SelectObject(m_bitmap);
-    
+
         dc.Blit(m_pos.x, m_pos.y, m_bitmap.GetWidth(), m_bitmap.GetHeight(),
-            & memDC, 0, 0, op, true);
+            & memDC, 0, 0, wxCOPY, true);
+            
+        if (highlight)
+        {
+            dc.SetPen(*wxWHITE_PEN);
+            dc.SetBrush(*wxTRANSPARENT_BRUSH);
+            dc.DrawRectangle(m_pos.x, m_pos.y, m_bitmap.GetWidth(), m_bitmap.GetHeight());
+        }
 
         return true;
     }
@@ -499,3 +491,19 @@ bool DragShape::Draw(wxDC& dc, int op)
         return false;
 }
 
+// MyDragImage
+
+// On some platforms, notably Mac OS X with Core Graphics, we can't blit from
+// a window, so we need to draw the background explicitly.
+bool MyDragImage::UpdateBackingFromWindow(wxDC& WXUNUSED(windowDC), wxMemoryDC& destDC, const wxRect& WXUNUSED(sourceRect),
+                    const wxRect& destRect) const
+{
+    destDC.SetClippingRegion(destRect);
+
+    if (wxGetApp().GetBackgroundBitmap().Ok())
+        wxGetApp().TileBitmap(destRect, destDC, wxGetApp().GetBackgroundBitmap());
+
+    m_canvas->DrawShapes(destDC);
+    return true;
+}
+