finished wxWindow for MGL

[wxWidgets.git] / include / wx / msw / dc.h

diff --git a/include/wx/msw/dc.h b/include/wx/msw/dc.h
index 94605640ca56730d237003fbd1ff25031e62d8f5..50e310c902f13e9d1a0a79530a9bd715b2697433 100644 (file)
--- a/include/wx/msw/dc.h
+++ b/include/wx/msw/dc.h
@@ -71,10 +71,30 @@
 
 #define     wx_round(a)    (int)((a)+.5)
 
-class WXDLLEXPORT wxDC : public wxDCBase
+#if wxUSE_DC_CACHEING
+/*
+ * Cached blitting, maintaining a cache
+ * of bitmaps required for transparent blitting
+ * instead of constant creation/deletion
+ */
+
+class wxDCCacheEntry: public wxObject
 {
-    DECLARE_DYNAMIC_CLASS(wxDC)
+public:
+    wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth);
+    wxDCCacheEntry(WXHDC hDC, int depth);
+    ~wxDCCacheEntry();
+
+    WXHBITMAP   m_bitmap;
+    WXHDC       m_dc;
+    int         m_width;
+    int         m_height;
+    int         m_depth;
+};
+#endif
 
+class WXDLLEXPORT wxDC : public wxDCBase
+{
 public:
     wxDC();
     ~wxDC();
@@ -140,6 +160,18 @@ public:
     const wxBitmap& GetSelectedBitmap() const { return m_selectedBitmap; }
     wxBitmap& GetSelectedBitmap() { return m_selectedBitmap; }
 
+    // update the internal clip box variables
+    void UpdateClipBox();
+
+#if wxUSE_DC_CACHEING
+    static wxDCCacheEntry* FindBitmapInCache(WXHDC hDC, int w, int h);
+    static wxDCCacheEntry* FindDCInCache(wxDCCacheEntry* notThis, WXHDC hDC);
+
+    static void AddToBitmapCache(wxDCCacheEntry* entry);
+    static void AddToDCCache(wxDCCacheEntry* entry);
+    static void ClearCache();
+#endif
+
 protected:
     virtual void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
                              int style = wxFLOOD_SURFACE);
@@ -175,7 +207,7 @@ protected:
 
     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
-                        int rop = wxCOPY, bool useMask = FALSE);
+                        int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 
     // this is gnarly - we can't even call this function DoSetClippingRegion()
     // because of virtual function hiding
@@ -213,8 +245,7 @@ protected:
     // TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
     bool              m_bOwnsDC:1;
 
-    // our HDC and its usage count: we only free it when the usage count drops
-    // to 0
+    // our HDC
     WXHDC             m_hDC;
 
     // Store all old GDI objects when do a SelectObject, so we can select them
@@ -225,6 +256,25 @@ protected:
     WXHBRUSH          m_oldBrush;
     WXHFONT           m_oldFont;
     WXHPALETTE        m_oldPalette;
+
+#if wxUSE_DC_CACHEING
+    static wxList     sm_bitmapCache;
+    static wxList     sm_dcCache;
+#endif
+
+    DECLARE_DYNAMIC_CLASS(wxDC)
+};
+
+// ----------------------------------------------------------------------------
+// wxDCTemp: a wxDC which doesn't free the given HDC (used by wxWindows
+// only/mainly)
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxDCTemp : public wxDC
+{
+public:
+    wxDCTemp(WXHDC hdc) { SetHDC(hdc); }
+    virtual ~wxDCTemp() { SetHDC((WXHDC)NULL); }
 };
 
 #endif