add IsShown() accessor which is sometimes more convenient than IsHidden()

[wxWidgets.git] / include / wx / os2 / dc.h

diff --git a/include/wx/os2/dc.h b/include/wx/os2/dc.h
index aabfd387118f77a85213ef1a486675512c7761fa..aff30c67eae09e5113c0fa16ac12abe8b274129e 100644 (file)
--- a/include/wx/os2/dc.h
+++ b/include/wx/os2/dc.h
@@ -13,7 +13,7 @@
 #define _WX_DC_H_
 
 #include "wx/defs.h"
-//#include "wx/dc.h"
+#include "wx/dc.h"
 
 // ---------------------------------------------------------------------------
 // macros
@@ -67,13 +67,43 @@
 
 #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
+{
+public:
+    wxDCCacheEntry( WXHBITMAP hBitmap
+                   ,int       nWidth
+                   ,int       nHeight
+                   ,int       nDepth
+                  );
+    wxDCCacheEntry( HPS   hPS
+                   ,int   nDepth
+                  );
+    virtual ~wxDCCacheEntry();
+
+    WXHBITMAP                       m_hBitmap;
+    HPS                             m_hPS;
+    int                             m_nWidth;
+    int                             m_nHeight;
+    int                             m_nDepth;
+}; // end of CLASS wxDCCacheEntry
+#endif
+
+// this is an ABC: use one of the derived classes to create a DC associated
+// with a window, screen, printer and so on
+class WXDLLIMPEXP_CORE wxPMDCImpl : public wxDCImpl
 {
     DECLARE_DYNAMIC_CLASS(wxDC)
 
 public:
-    wxDC(void);
-    ~wxDC();
+    wxPMDCImpl(wxDC *owner, WXHDC hDC);
+    virtual ~wxPMDCImpl();
 
     // implement base class pure virtuals
     // ----------------------------------
@@ -97,13 +127,7 @@ public:
 
     virtual wxCoord GetCharHeight(void) const;
     virtual wxCoord GetCharWidth(void) const;
-    virtual void    DoGetTextExtent( const wxString& rsString
-                                    ,wxCoord*        pX
-                                    ,wxCoord*        pY
-                                    ,wxCoord*        pDescent = NULL
-                                    ,wxCoord*        pExternalLeading = NULL
-                                    ,wxFont*         pTheFont = NULL
-                                   ) const;
+
     virtual bool    CanDrawBitmap(void) const;
     virtual bool    CanGetTextExtent(void) const;
     virtual int     GetDepth(void) const;
@@ -113,9 +137,6 @@ public:
     virtual void    SetUserScale( double dX
                                  ,double dY
                                 );
-    virtual void    SetSystemScale( double dX
-                                   ,double dY
-                                  );
     virtual void    SetLogicalScale( double dX
                                     ,double dY
                                    );
@@ -151,14 +172,62 @@ public:
     HPS             GetHPS(void) const { return m_hPS; }
     void            SetHPS(HPS hPS)
     {
-        HDC                         hDC = ::GpiQueryDevice(hPS);
         m_hPS = hPS;
     }
     const wxBitmap& GetSelectedBitmap(void) const { return m_vSelectedBitmap; }
     wxBitmap&       GetSelectedBitmap(void) { return m_vSelectedBitmap; }
 
+    void            UpdateClipBox();
+
+#if wxUSE_DC_CACHEING
+    static wxDCCacheEntry* FindBitmapInCache( HPS hPS
+                                             ,int nWidth
+                                             ,int nHeight
+                                            );
+    static wxDCCacheEntry* FindDCInCache( wxDCCacheEntry* pNotThis
+                                         ,HPS             hPS
+                                        );
+
+    static void AddToBitmapCache(wxDCCacheEntry* pEntry);
+    static void AddToDCCache(wxDCCacheEntry* pEntry);
+    static void ClearCache(void);
+#endif
+
 protected:
-    virtual void DoFloodFill( wxCoord         vX
+    void Init()
+    {
+        m_pCanvas      = NULL;
+        m_hOldBitmap   = 0;
+        m_hOldPen      = 0;
+        m_hOldBrush    = 0;
+        m_hOldFont     = 0;
+#if wxUSE_PALETTE
+        m_hOldPalette  = 0;
+#endif // wxUSE_PALETTE
+
+        m_bOwnsDC      = false;
+        m_hDC          = 0;
+        m_hOldPS       = NULL;
+        m_hPS          = NULL;
+        m_bIsPaintTime = false; // True at Paint Time
+
+        m_pen.SetColour(*wxBLACK);
+        m_brush.SetColour(*wxWHITE);
+    }
+
+    // create an uninitialized DC: this should be only used by the derived
+    // classes
+    wxPMDCImpl( wxDC *owner ) : wxDCImpl( owner ) { Init(); }
+
+public:
+    virtual void    DoGetTextExtent( const wxString& rsString
+                                    ,wxCoord*        pX
+                                    ,wxCoord*        pY
+                                    ,wxCoord*        pDescent = NULL
+                                    ,wxCoord*        pExternalLeading = NULL
+                                    ,const wxFont*   pTheFont = NULL
+                                   ) const;
+    virtual bool DoFloodFill( wxCoord         vX
                              ,wxCoord         vY
                              ,const wxColour& rCol
                              ,int             nStyle = wxFLOOD_SURFACE
@@ -248,25 +317,16 @@ protected:
                         ,wxCoord vYsrc
                         ,int     nRop = wxCOPY
                         ,bool    bUseMask = FALSE
+                        ,wxCoord vXsrcMask = -1
+                        ,wxCoord vYsrcMask = -1
                        );
 
-    virtual void DoSetClippingRegionAsRegion(const wxRegion& rRegion);
     virtual void DoSetClippingRegion( wxCoord vX
                                      ,wxCoord vY
                                      ,wxCoord vWidth
                                      ,wxCoord vHeight
                                     );
-    virtual void DoGetClippingRegion( wxCoord* pX
-                                     ,wxCoord* pY
-                                     ,wxCoord* pWidth
-                                     ,wxCoord* pHeight)
-    {
-        GetClippingBox( pX
-                       ,pY
-                       ,pWidth
-                       ,pHeight
-                      );
-    }
+    virtual void DoSetDeviceClippingRegion(const wxRegion& rRegion);
 
     virtual void DoGetSize( int* pWidth
                            ,int* pHeight
@@ -287,7 +347,12 @@ protected:
                                ,int     nFillStyle = wxODDEVEN_RULE
                               );
 
+#if wxUSE_PALETTE
+    void DoSelectPalette(bool bRealize = FALSE);
+    void InitializePalette(void);
+#endif // wxUSE_PALETTE
 
+protected:
     //
     // common part of DoDrawText() and DoDrawRotatedText()
     //
@@ -319,11 +384,9 @@ public:
     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;
-    int                             m_nDCCount;
 
     //
     // Store all old GDI objects when do a SelectObject, so we can select them
@@ -335,6 +398,11 @@ public:
     WXHBRUSH                        m_hOldBrush;
     WXHFONT                         m_hOldFont;
     WXHPALETTE                      m_hOldPalette;
-};
+
+#if wxUSE_DC_CACHEING
+    static wxList                   m_svBitmapCache;
+    static wxList                   m_svDCCache;
+#endif
+}; // end of CLASS wxDC
 #endif
     // _WX_DC_H_