Clear old selection when wxListBox becomes empty.

[wxWidgets.git] / src / generic / graphicc.cpp

diff --git a/src/generic/graphicc.cpp b/src/generic/graphicc.cpp
index cf9a017ad13b8ee9b773c098b9655318cf5afcea..ca611d155fab1b1199364b0b426fd0138a7c997c 100644 (file)
--- a/src/generic/graphicc.cpp
+++ b/src/generic/graphicc.cpp
@@ -323,7 +323,7 @@ private :
     cairo_font_weight_t m_weight;
 };
 
-class wxCairoBitmapData : public wxGraphicsObjectRefData
+class wxCairoBitmapData : public wxGraphicsBitmapData
 {
 public:
     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
@@ -335,6 +335,7 @@ public:
 
     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
+    virtual void* GetNativeBitmap() const { return m_surface; }
     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 
 #if wxUSE_IMAGE
@@ -1248,13 +1249,13 @@ void wxCairoBitmapData::InitSurface(cairo_format_t format, int stride)
 }
 
 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
-    wxGraphicsObjectRefData( renderer )
+    wxGraphicsBitmapData( renderer )
 {
     m_surface = bitmap;
     m_pattern = cairo_pattern_create_for_surface(m_surface);
 }
 
-wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
+wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsBitmapData( renderer )
 {
     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
 
@@ -1394,7 +1395,7 @@ inline unsigned char Unpremultiply(unsigned char alpha, unsigned char data)
 
 wxCairoBitmapData::wxCairoBitmapData(wxGraphicsRenderer* renderer,
                                      const wxImage& image)
-    : wxGraphicsObjectRefData(renderer)
+    : wxGraphicsBitmapData(renderer)
 {
     const cairo_format_t bufferFormat = image.HasAlpha()
                                             ? CAIRO_FORMAT_ARGB32
@@ -1675,8 +1676,35 @@ wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC&
     m_enableOffset = true;
 
 #ifdef __WXMSW__
-    m_mswSurface = cairo_win32_surface_create((HDC)dc.GetHDC());
+
+    HDC hdc = (HDC)dc.GetHDC();
+
+    HBITMAP bitmap = (HBITMAP)GetCurrentObject(hdc, OBJ_BITMAP);
+
+    BITMAP info;
+    bool hasBitmap = false;
+
+    // cairo_win32_surface_create creates a 24-bit bitmap,
+    // so if we have alpha, we need to create a 32-bit surface instead.
+    if (!GetObject(bitmap, sizeof(info), &info) || info.bmBitsPixel < 32)
+        m_mswSurface = cairo_win32_surface_create(hdc);
+    else {
+        hasBitmap = true;
+        m_mswSurface = cairo_image_surface_create_for_data((unsigned char*)info.bmBits,
+                                               CAIRO_FORMAT_ARGB32,
+                                               info.bmWidth,
+                                               info.bmHeight,
+                                               info.bmWidthBytes);
+    }
+
     Init( cairo_create(m_mswSurface) );
+    // If we've created a image surface, we need to flip the Y axis so that 
+    // all drawing will appear right side up.
+    if (hasBitmap) {
+        cairo_matrix_t matrix;
+        cairo_matrix_init(&matrix, 1.0, 0.0, 0.0, -1.0, 0.0, height);
+        cairo_set_matrix(m_context, &matrix);
+    }
 #endif
     
 #ifdef __WXGTK20__