X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a23fd0e1d1329a4a258b4defb3e0b0001b700c6e..6c02c32922ecd6b3272c89669e3fe1304cd9dfac:/include/wx/dc.h

diff --git a/include/wx/dc.h b/include/wx/dc.h
index ef4e0e331b..8dc21ff6f0 100644
--- a/include/wx/dc.h
+++ b/include/wx/dc.h
@@ -1,3 +1,14 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        dc.h
+// Purpose:     wxDC class
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     05/25/99
+// RCS-ID:      $Id$
+// Copyright:   (c) wxWindows team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
 #ifndef _WX_DC_H_BASE_
 #define _WX_DC_H_BASE_
 
@@ -20,13 +31,64 @@
 
 #include "wx/list.h"            // we use wxList in inline functions
 
-// ---------------------------------------------------------------------------
-// types
-// ---------------------------------------------------------------------------
+class WXDLLEXPORT wxDCBase;
+
+class WXDLLEXPORT wxDrawObject
+{
+public:
+
+    wxDrawObject()
+    {
+        ResetBoundingBox();
+    }
+
+    virtual ~wxDrawObject() { }
+
+    virtual void Draw(wxDCBase&) const { }
+
+    virtual void CalcBoundingBox(wxCoord x, wxCoord y)
+    {
+      if ( m_isBBoxValid )
+      {
+         if ( x < m_minX ) m_minX = x;
+         if ( y < m_minY ) m_minY = y;
+         if ( x > m_maxX ) m_maxX = x;
+         if ( y > m_maxY ) m_maxY = y;
+      }
+      else
+      {
+         m_isBBoxValid = TRUE;
+
+         m_minX = x;
+         m_minY = y;
+         m_maxX = x;
+         m_maxY = y;
+      }
+    }
 
-// type which should be used (whenever possible, i.e. as long as it doesn't
-// break compatibility) for screen coordinates
-typedef int wxCoord;
+    void ResetBoundingBox()
+    {
+        m_isBBoxValid = FALSE;
+
+        m_minX = m_maxX = m_minY = m_maxY = 0;
+    }
+
+    // Get the final bounding box of the PostScript or Metafile picture.
+
+    wxCoord MinX() const { return m_minX; }
+    wxCoord MaxX() const { return m_maxX; }
+    wxCoord MinY() const { return m_minY; }
+    wxCoord MaxY() const { return m_maxY; }
+
+    //to define the type of object for derived objects
+    virtual int GetType()=0;
+
+protected:
+    //for boundingbox calculation
+    bool m_isBBoxValid:1;
+    //for boundingbox calculation
+    wxCoord m_minX, m_minY, m_maxX, m_maxY;
+};
 
 // ---------------------------------------------------------------------------
 // global variables
@@ -40,15 +102,13 @@ WXDLLEXPORT_DATA(extern int) wxPageNumber;
 
 class WXDLLEXPORT wxDCBase : public wxObject
 {
-    DECLARE_ABSTRACT_CLASS(wxDCBase)
-
 public:
     wxDCBase()
     {
         m_clipping = FALSE;
         m_ok = TRUE;
 
-        m_minX = m_minY = m_maxX = m_maxY = 0;
+        ResetBoundingBox();
 
         m_signX = m_signY = 1;
 
@@ -56,16 +116,16 @@ public:
         m_deviceOriginX = m_deviceOriginY = 0;
 
         m_logicalScaleX = m_logicalScaleY =
-        m_userScaleX = m_userScaleY = 
+        m_userScaleX = m_userScaleY =
         m_scaleX = m_scaleY = 1.0;
 
-        m_logicalFunction = -1;
+        m_logicalFunction = wxCOPY;
 
         m_backgroundMode = wxTRANSPARENT;
 
         m_mappingMode = wxMM_TEXT;
 
-        m_backgroundBrush = *wxWHITE_BRUSH;
+        m_backgroundBrush = *wxTRANSPARENT_BRUSH;
 
         m_textForegroundColour = *wxBLACK;
         m_textBackgroundColour = *wxWHITE;
@@ -81,97 +141,82 @@ public:
     // graphic primitives
     // ------------------
 
-    void FloodFill(long x, long y, const wxColour& col,
-            int style = wxFLOOD_SURFACE)
+    virtual void DrawObject(wxDrawObject* drawobject)
+    {
+        drawobject->Draw(*this);
+        CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
+        CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
+    }
+
+    void FloodFill(wxCoord x, wxCoord y, const wxColour& col,
+                   int style = wxFLOOD_SURFACE)
         { DoFloodFill(x, y, col, style); }
     void FloodFill(const wxPoint& pt, const wxColour& col,
-            int style = wxFLOOD_SURFACE)
+                   int style = wxFLOOD_SURFACE)
         { DoFloodFill(pt.x, pt.y, col, style); }
 
-    bool GetPixel(long x, long y, wxColour *col) const
+    bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
         { return DoGetPixel(x, y, col); }
     bool GetPixel(const wxPoint& pt, wxColour *col) const
         { return DoGetPixel(pt.x, pt.y, col); }
 
-    void DrawLine(long x1, long y1, long x2, long y2)
+    void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
         { DoDrawLine(x1, y1, x2, y2); }
     void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
         { DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
 
-    void CrossHair(long x, long y)
+    void CrossHair(wxCoord x, wxCoord y)
         { DoCrossHair(x, y); }
     void CrossHair(const wxPoint& pt)
         { DoCrossHair(pt.x, pt.y); }
 
-    void DrawArc(long x1, long y1, long x2, long y2, long xc, long yc)
+    void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
+                 wxCoord xc, wxCoord yc)
         { DoDrawArc(x1, y1, x2, y2, xc, yc); }
     void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
         { DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
 
-    void DrawEllipticArc(long x, long y, long w, long h, double sa, double ea)
-        { DoDrawEllipticArc(x, y, x, y, sa, ea); }
+    void DrawCheckMark(wxCoord x, wxCoord y,
+                       wxCoord width, wxCoord height)
+        { DoDrawCheckMark(x, y, width, height); }
+    void DrawCheckMark(const wxRect& rect)
+        { DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
+
+    void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
+                         double sa, double ea)
+        { DoDrawEllipticArc(x, y, w, h, sa, ea); }
     void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
                          double sa, double ea)
         { DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
 
-    void DrawPoint(long x, long y)
+    void DrawPoint(wxCoord x, wxCoord y)
         { DoDrawPoint(x, y); }
     void DrawPoint(const wxPoint& pt)
         { DoDrawPoint(pt.x, pt.y); }
 
-    void DrawLines(int n, wxPoint points[], long xoffset = 0, long yoffset = 0)
+    void DrawLines(int n, wxPoint points[],
+                   wxCoord xoffset = 0, wxCoord yoffset = 0)
         { DoDrawLines(n, points, xoffset, yoffset); }
-    void DrawLines(const wxList *list, long xoffset = 0, long yoffset = 0)
-    {
-        int n = list->Number();
-        wxPoint *points = new wxPoint[n];
-
-        int i = 0;
-        for ( wxNode *node = list->First(); node; node = node->Next(), i++ )
-        {
-            wxPoint *point = (wxPoint *)node->Data();
-            points[i].x = point->x;
-            points[i].y = point->y;
-        }
-
-        DoDrawLines(n, points, xoffset, yoffset);
-
-        delete [] points;
-    }
+    void DrawLines(const wxList *list,
+                   wxCoord xoffset = 0, wxCoord yoffset = 0);
 
     void DrawPolygon(int n, wxPoint points[],
-                     long xoffset = 0, long yoffset = 0,
+                     wxCoord xoffset = 0, wxCoord yoffset = 0,
                      int fillStyle = wxODDEVEN_RULE)
         { DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
 
     void DrawPolygon(const wxList *list,
-                     long xoffset = 0, long yoffset = 0,
-                     int fillStyle = wxODDEVEN_RULE)
-    {
-        int n = list->Number();
-        wxPoint *points = new wxPoint[n];
-
-        int i = 0;
-        for ( wxNode *node = list->First(); node; node = node->Next(), i++ )
-        {
-            wxPoint *point = (wxPoint *)node->Data();
-            points[i].x = point->x;
-            points[i].y = point->y;
-        }
+                     wxCoord xoffset = 0, wxCoord yoffset = 0,
+                     int fillStyle = wxODDEVEN_RULE);
 
-        DoDrawPolygon(n, points, xoffset, yoffset, fillStyle);
-
-        delete [] points;
-    }
-
-    void DrawRectangle(long x, long y, long width, long height)
+    void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
         { DoDrawRectangle(x, y, width, height); }
     void DrawRectangle(const wxPoint& pt, const wxSize& sz)
         { DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
     void DrawRectangle(const wxRect& rect)
         { DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
 
-    void DrawRoundedRectangle(long x, long y, long width, long height,
+    void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
                               double radius)
         { DoDrawRoundedRectangle(x, y, width, height, radius); }
     void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
@@ -180,81 +225,74 @@ public:
     void DrawRoundedRectangle(const wxRect& r, double radius)
         { DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
 
-    void DrawEllipse(long x, long y, long width, long height)
+    void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
+        { DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
+    void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
         { DoDrawEllipse(x, y, width, height); }
     void DrawEllipse(const wxPoint& pt, const wxSize& sz)
         { DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
     void DrawEllipse(const wxRect& rect)
         { DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
 
-    void DrawIcon(const wxIcon& icon, long x, long y)
+    void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
         { DoDrawIcon(icon, x, y); }
     void DrawIcon(const wxIcon& icon, const wxPoint& pt)
         { DoDrawIcon(icon, pt.x, pt.y); }
 
-    void DrawBitmap(const wxBitmap &bmp, long x, long y, bool useMask = FALSE)
+    void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
+                    bool useMask = FALSE)
         { DoDrawBitmap(bmp, x, y, useMask); }
     void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
                     bool useMask = FALSE)
         { DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
 
-    void DrawText(const wxString& text, long x, long y)
+    void DrawText(const wxString& text, wxCoord x, wxCoord y)
         { DoDrawText(text, x, y); }
     void DrawText(const wxString& text, const wxPoint& pt)
         { DoDrawText(text, pt.x, pt.y); }
 
-    bool Blit(long xdest, long ydest, long width, long height,
-              wxDC *source, long xsrc, long ysrc,
-              int rop = wxCOPY, bool useMask = FALSE)
+    void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
+        { DoDrawRotatedText(text, x, y, angle); }
+    void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
+        { DoDrawRotatedText(text, pt.x, pt.y, angle); }
+
+    // this version puts both optional bitmap and the text into the given
+    // rectangle and aligns is as specified by alignment parameter; it also
+    // will emphasize the character with the given index if it is != -1 and
+    // return the bounding rectangle if required
+    virtual void DrawLabel(const wxString& text,
+                           const wxBitmap& image,
+                           const wxRect& rect,
+                           int alignment = wxALIGN_LEFT | wxALIGN_TOP,
+                           int indexAccel = -1,
+                           wxRect *rectBounding = NULL);
+
+    void DrawLabel(const wxString& text, const wxRect& rect,
+                   int alignment = wxALIGN_LEFT | wxALIGN_TOP,
+                   int indexAccel = -1)
+        { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
+
+    bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
+              wxDC *source, wxCoord xsrc, wxCoord ysrc,
+              int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1)
     {
         return DoBlit(xdest, ydest, width, height,
-                      source, xsrc, ysrc, rop, useMask);
+                      source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
     }
     bool Blit(const wxPoint& destPt, const wxSize& sz,
               wxDC *source, const wxPoint& srcPt,
-              int rop = wxCOPY, bool useMask = FALSE)
+              int rop = wxCOPY, bool useMask = FALSE, const wxPoint& srcPtMask = wxPoint(-1, -1))
     {
         return DoBlit(destPt.x, destPt.y, sz.x, sz.y,
-                      source, srcPt.x, srcPt.y, rop, useMask);
+                      source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
     }
 
 #if wxUSE_SPLINES
     // TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
-    void DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3)
-    {
-        wxList point_list;
-
-        wxPoint *point1 = new wxPoint;
-        point1->x = x1; point1->y = y1;
-        point_list.Append((wxObject*)point1);
-
-        wxPoint *point2 = new wxPoint;
-        point2->x = x2; point2->y = y2;
-        point_list.Append((wxObject*)point2);
-
-        wxPoint *point3 = new wxPoint;
-        point3->x = x3; point3->y = y3;
-        point_list.Append((wxObject*)point3);
-
-        DrawSpline(&point_list);
-
-        for( wxNode *node = point_list.First(); node; node = node->Next() )
-        {
-            wxPoint *p = (wxPoint *)node->Data();
-            delete p;
-        }
-    }
-
-    void DrawSpline(int n, wxPoint points[])
-    {
-        wxList list;
-        for (int i =0; i < n; i++)
-        {
-            list.Append((wxObject*)&points[i]);
-        }
-
-        DrawSpline(&list);
-    }
+    void DrawSpline(wxCoord x1, wxCoord y1,
+                    wxCoord x2, wxCoord y2,
+                    wxCoord x3, wxCoord y3);
+    void DrawSpline(int n, wxPoint points[]);
 
     void DrawSpline(wxList *points) { DoDrawSpline(points); }
 #endif // wxUSE_SPLINES
@@ -264,11 +302,11 @@ public:
 
     virtual void Clear() = 0;
 
-    virtual bool StartDoc(const wxString& message) = 0;
-    virtual void EndDoc() = 0;
+    virtual bool StartDoc(const wxString& WXUNUSED(message)) { return TRUE; }
+    virtual void EndDoc() { }
 
-    virtual void StartPage() = 0;
-    virtual void EndPage() = 0;
+    virtual void StartPage() { }
+    virtual void EndPage() { }
 
     // set objects to use for drawing
     // ------------------------------
@@ -283,7 +321,7 @@ public:
     // clipping region
     // ---------------
 
-    void SetClippingRegion(long x, long y, long width, long height)
+    void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
         { DoSetClippingRegion(x, y, width, height); }
     void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
         { DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
@@ -294,21 +332,36 @@ public:
 
     virtual void DestroyClippingRegion() = 0;
 
-    void GetClippingBox(long *x, long *y, long *w, long *h) const
+    void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
         { DoGetClippingBox(x, y, w, h); }
     void GetClippingBox(wxRect& rect) const
-        { DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); }
+        {
+          // Necessary to use intermediate variables for 16-bit compilation
+          wxCoord x, y, w, h;
+          DoGetClippingBox(&x, &y, &w, &h);
+          rect.x = x; rect.y = y; rect.width = w; rect.height = h;
+        }
 
     // text extent
     // -----------
 
-    virtual long GetCharHeight() const = 0;
-    virtual long GetCharWidth() const = 0;
-    virtual void GetTextExtent(const wxString& string,
-                               long *x, long *y,
-                               long *descent = NULL,
-                               long *externalLeading = NULL,
-                               wxFont *theFont = NULL) const = 0;
+    virtual wxCoord GetCharHeight() const = 0;
+    virtual wxCoord GetCharWidth() const = 0;
+
+    // only works for single line strings
+    void GetTextExtent(const wxString& string,
+                       wxCoord *x, wxCoord *y,
+                       wxCoord *descent = NULL,
+                       wxCoord *externalLeading = NULL,
+                       wxFont *theFont = NULL) const
+        { DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
+
+    // works for single as well as multi-line strings
+    virtual void GetMultiLineTextExtent(const wxString& text,
+                                        wxCoord *width,
+                                        wxCoord *height,
+                                        wxCoord *heightLine = NULL,
+                                        wxFont *font = NULL);
 
     // size and resolution
     // -------------------
@@ -340,14 +393,14 @@ public:
 
     // This group of functions does actual conversion of the input, as you'd
     // expect.
-    long DeviceToLogicalX(long x) const;
-    long DeviceToLogicalY(long y) const;
-    long DeviceToLogicalXRel(long x) const;
-    long DeviceToLogicalYRel(long y) const;
-    long LogicalToDeviceX(long x) const;
-    long LogicalToDeviceY(long y) const;
-    long LogicalToDeviceXRel(long x) const;
-    long LogicalToDeviceYRel(long y) const;
+    wxCoord DeviceToLogicalX(wxCoord x) const;
+    wxCoord DeviceToLogicalY(wxCoord y) const;
+    wxCoord DeviceToLogicalXRel(wxCoord x) const;
+    wxCoord DeviceToLogicalYRel(wxCoord y) const;
+    wxCoord LogicalToDeviceX(wxCoord x) const;
+    wxCoord LogicalToDeviceY(wxCoord y) const;
+    wxCoord LogicalToDeviceXRel(wxCoord x) const;
+    wxCoord LogicalToDeviceYRel(wxCoord y) const;
 
     // query DC capabilities
     // ---------------------
@@ -367,6 +420,7 @@ public:
     // ---------
 
         // const...
+    int GetBackgroundMode() const { return m_backgroundMode; }
     const wxBrush&  GetBackground() const { return m_backgroundBrush; }
     const wxBrush&  GetBrush() const { return m_brush; }
     const wxFont&   GetFont() const { return m_font; }
@@ -397,8 +451,6 @@ public:
     }
     virtual void SetUserScale(double x, double y) = 0;
 
-    virtual void SetSystemScale(double x, double y) = 0;
-
     virtual void GetLogicalScale(double *x, double *y)
     {
         if ( x ) *x = m_logicalScaleX;
@@ -410,17 +462,17 @@ public:
         m_logicalScaleY = y;
     }
 
-    void GetLogicalOrigin(long *x, long *y) const
+    void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
         { DoGetLogicalOrigin(x, y); }
     wxPoint GetLogicalOrigin() const
-        { long x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
-    virtual void SetLogicalOrigin(long x, long y) = 0;
+        { wxCoord x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
+    virtual void SetLogicalOrigin(wxCoord x, wxCoord y) = 0;
 
-    void GetDeviceOrigin(long *x, long *y) const
+    void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
         { DoGetDeviceOrigin(x, y); }
     wxPoint GetDeviceOrigin() const
-        { long x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
-    virtual void SetDeviceOrigin(long x, long y) = 0;
+        { wxCoord x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
+    virtual void SetDeviceOrigin(wxCoord x, wxCoord y) = 0;
 
     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) = 0;
 
@@ -434,26 +486,107 @@ public:
     virtual void SetOptimization(bool WXUNUSED(opt)) { }
     virtual bool GetOptimization() { return FALSE; }
 
+    // Some platforms have a DC cache, which should be cleared
+    // at appropriate points such as after a series of DC operations.
+    // Put ClearCache in the wxDC implementation class, since it has to be
+    // static.
+    // static void ClearCache() ;
+#if wxUSE_DC_CACHEING
+    static void EnableCache(bool cacheing) { sm_cacheing = cacheing; }
+    static bool CacheEnabled() { return sm_cacheing ; }
+#endif
+
     // bounding box
     // ------------
 
-    virtual void CalcBoundingBox(long x, long y)
+    virtual void CalcBoundingBox(wxCoord x, wxCoord y)
+    {
+      if ( m_isBBoxValid )
+      {
+         if ( x < m_minX ) m_minX = x;
+         if ( y < m_minY ) m_minY = y;
+         if ( x > m_maxX ) m_maxX = x;
+         if ( y > m_maxY ) m_maxY = y;
+      }
+      else
+      {
+         m_isBBoxValid = TRUE;
+
+         m_minX = x;
+         m_minY = y;
+         m_maxX = x;
+         m_maxY = y;
+      }
+    }
+
+    void ResetBoundingBox()
     {
-        if (x < m_minX) m_minX = x;
-        if (y < m_minY) m_minY = y;
-        if (x > m_maxX) m_maxX = x;
-        if (y > m_maxY) m_maxY = y;
+        m_isBBoxValid = FALSE;
+
+        m_minX = m_maxX = m_minY = m_maxY = 0;
     }
 
     // Get the final bounding box of the PostScript or Metafile picture.
-    long MinX() const { return m_minX; }
-    long MaxX() const { return m_maxX; }
-    long MinY() const { return m_minY; }
-    long MaxY() const { return m_maxY; }
+    wxCoord MinX() const { return m_minX; }
+    wxCoord MaxX() const { return m_maxX; }
+    wxCoord MinY() const { return m_minY; }
+    wxCoord MaxY() const { return m_maxY; }
 
     // misc old functions
     // ------------------
 
+    // for compatibility with the old code when wxCoord was long everywhere
+#ifndef __WIN16__
+    void GetTextExtent(const wxString& string,
+                       long *x, long *y,
+                       long *descent = NULL,
+                       long *externalLeading = NULL,
+                       wxFont *theFont = NULL) const
+    {
+        wxCoord x2, y2, descent2, externalLeading2;
+        DoGetTextExtent(string, &x2, &y2,
+                        &descent2, &externalLeading2,
+                        theFont);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+        if ( descent )
+            *descent = descent2;
+        if ( externalLeading )
+            *externalLeading = externalLeading2;
+    }
+
+    void GetLogicalOrigin(long *x, long *y) const
+    {
+        wxCoord x2, y2;
+        DoGetLogicalOrigin(&x2, &y2);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+    }
+
+    void GetDeviceOrigin(long *x, long *y) const
+    {
+        wxCoord x2, y2;
+        DoGetDeviceOrigin(&x2, &y2);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+    }
+    void GetClippingBox(long *x, long *y, long *w, long *h) const
+    {
+        wxCoord xx,yy,ww,hh;
+        DoGetClippingBox(&xx, &yy, &ww, &hh);
+        if (x) *x = xx;
+        if (y) *y = yy;
+        if (w) *w = ww;
+        if (h) *h = hh;
+    }
+#endif // !Win16
+
 #if WXWIN_COMPATIBILITY
     virtual void SetColourMap(const wxPalette& palette) { SetPalette(palette); }
     void GetTextExtent(const wxString& string, float *x, float *y,
@@ -465,54 +598,63 @@ public:
 
 protected:
     // the pure virtual functions which should be implemented by wxDC
-    virtual void DoFloodFill(long x, long y, const wxColour& col,
+    virtual void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
                              int style = wxFLOOD_SURFACE) = 0;
 
-    virtual bool DoGetPixel(long x, long y, wxColour *col) const = 0;
+    virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0;
 
-    virtual void DoDrawPoint(long x, long y) = 0;
-    virtual void DoDrawLine(long x1, long y1, long x2, long y2) = 0;
+    virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0;
+    virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0;
 
-    virtual void DoDrawArc(long x1, long y1,
-                           long x2, long y2,
-                           long xc, long yc) = 0;
-    virtual void DoDrawEllipticArc(long x, long y, long w, long h,
+    virtual void DoDrawArc(wxCoord x1, wxCoord y1,
+                           wxCoord x2, wxCoord y2,
+                           wxCoord xc, wxCoord yc) = 0;
+    virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
+                                 wxCoord width, wxCoord height);
+    virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
                                    double sa, double ea) = 0;
 
-    virtual void DoDrawRectangle(long x, long y, long width, long height) = 0;
-    virtual void DoDrawRoundedRectangle(long x, long y,
-                                        long width, long height,
+    virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0;
+    virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
+                                        wxCoord width, wxCoord height,
                                         double radius) = 0;
-    virtual void DoDrawEllipse(long x, long y, long width, long height) = 0;
+    virtual void DoDrawEllipse(wxCoord x, wxCoord y,
+                               wxCoord width, wxCoord height) = 0;
 
-    virtual void DoCrossHair(long x, long y) = 0;
+    virtual void DoCrossHair(wxCoord x, wxCoord y) = 0;
 
-    virtual void DoDrawIcon(const wxIcon& icon, long x, long y) = 0;
-    virtual void DoDrawBitmap(const wxBitmap &bmp, long x, long y,
+    virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0;
+    virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
                               bool useMask = FALSE) = 0;
 
-    virtual void DoDrawText(const wxString& text, long x, long y) = 0;
+    virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0;
+    virtual void DoDrawRotatedText(const wxString& text,
+                                   wxCoord x, wxCoord y, double angle) = 0;
 
-    virtual bool DoBlit(long xdest, long ydest, long width, long height,
-                        wxDC *source, long xsrc, long ysrc,
-                        int rop = wxCOPY, bool useMask = FALSE) = 0;
+    virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
+                        wxCoord width, wxCoord height,
+                        wxDC *source, wxCoord xsrc, wxCoord ysrc,
+                        int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1) = 0;
 
     virtual void DoGetSize(int *width, int *height) const = 0;
     virtual void DoGetSizeMM(int* width, int* height) const = 0;
 
     virtual void DoDrawLines(int n, wxPoint points[],
-                             long xoffset, long yoffset) = 0;
+                             wxCoord xoffset, wxCoord yoffset) = 0;
     virtual void DoDrawPolygon(int n, wxPoint points[],
-                               long xoffset, long yoffset,
+                               wxCoord xoffset, wxCoord yoffset,
                                int fillStyle = wxODDEVEN_RULE) = 0;
 
     virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0;
-    virtual void DoSetClippingRegion(long x, long y,
-                                     long width, long height) = 0;
-    virtual void DoGetClippingRegion(long *x, long *y,
-                                     long *width, long *height) = 0;
-    virtual void DoGetClippingBox(long *x, long *y,
-                                  long *w, long *h) const
+    virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
+                                     wxCoord width, wxCoord height) = 0;
+
+    // FIXME are these functions really different?
+    virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y,
+                                     wxCoord *w, wxCoord *h)
+        { DoGetClippingBox(x, y, w, h); }
+    virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
+                                  wxCoord *w, wxCoord *h) const
     {
         if ( m_clipping )
         {
@@ -527,19 +669,27 @@ protected:
         }
     }
 
-    virtual void DoGetLogicalOrigin(long *x, long *y) const
+    virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
     {
         if ( x ) *x = m_logicalOriginX;
         if ( y ) *y = m_logicalOriginY;
     }
 
-    virtual void DoGetDeviceOrigin(long *x, long *y) const
+    virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
     {
         if ( x ) *x = m_deviceOriginX;
         if ( y ) *y = m_deviceOriginY;
     }
 
-    virtual void DoDrawSpline(wxList *points) = 0;
+    virtual void DoGetTextExtent(const wxString& string,
+                                 wxCoord *x, wxCoord *y,
+                                 wxCoord *descent = NULL,
+                                 wxCoord *externalLeading = NULL,
+                                 wxFont *theFont = NULL) const = 0;
+
+#if wxUSE_SPLINES
+    virtual void DoDrawSpline(wxList *points);
+#endif
 
 protected:
     // flags
@@ -547,13 +697,17 @@ protected:
     bool m_ok:1;
     bool m_clipping:1;
     bool m_isInteractive:1;
+    bool m_isBBoxValid:1;
+#if wxUSE_DC_CACHEING
+    static bool sm_cacheing;
+#endif
 
     // coordinate system variables
 
     // TODO short descriptions of what exactly they are would be nice...
 
-    long m_logicalOriginX, m_logicalOriginY;
-    long m_deviceOriginX, m_deviceOriginY;
+    wxCoord m_logicalOriginX, m_logicalOriginY;
+    wxCoord m_deviceOriginX, m_deviceOriginY;
 
     double m_logicalScaleX, m_logicalScaleY;
     double m_userScaleX, m_userScaleY;
@@ -563,8 +717,8 @@ protected:
     int m_signX, m_signY;
 
     // bounding and clipping boxes
-    long m_minX, m_minY, m_maxX, m_maxY;
-    long m_clipX1, m_clipY1, m_clipX2, m_clipY2;
+    wxCoord m_minX, m_minY, m_maxX, m_maxY;
+    wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2;
 
     int m_logicalFunction;
     int m_backgroundMode;
@@ -580,7 +734,8 @@ protected:
     wxPalette         m_palette;
 
 private:
-    DECLARE_NO_COPY_CLASS(wxDCBase);
+    DECLARE_NO_COPY_CLASS(wxDCBase)
+    DECLARE_ABSTRACT_CLASS(wxDCBase)
 };
 
 // ----------------------------------------------------------------------------
@@ -593,13 +748,65 @@ private:
     #include "wx/motif/dc.h"
 #elif defined(__WXGTK__)
     #include "wx/gtk/dc.h"
+#elif defined(__WXMGL__)
+    #include "wx/mgl/dc.h"
 #elif defined(__WXQT__)
     #include "wx/qt/dc.h"
 #elif defined(__WXMAC__)
     #include "wx/mac/dc.h"
+#elif defined(__WXPM__)
+    #include "wx/os2/dc.h"
 #elif defined(__WXSTUBS__)
     #include "wx/stubs/dc.h"
 #endif
 
+// ----------------------------------------------------------------------------
+// helper class: you can use it to temporarily change the DC text colour and
+// restore it automatically when the object goes out of scope
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxDCTextColourChanger
+{
+public:
+    wxDCTextColourChanger(wxDC& dc) : m_dc(dc) { }
+
+    ~wxDCTextColourChanger()
+    {
+        if ( m_colFgOld.Ok() )
+            m_dc.SetTextForeground(m_colFgOld);
+    }
+
+    void Set(const wxColour& col)
+    {
+        if ( !m_colFgOld.Ok() )
+            m_colFgOld = m_dc.GetTextForeground();
+        m_dc.SetTextForeground(col);
+    }
+
+private:
+    wxDC& m_dc;
+
+    wxColour m_colFgOld;
+};
+
+// ----------------------------------------------------------------------------
+// another small helper class: sets the clipping region in its ctor and
+// destroys it in the dtor
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxDCClipper
+{
+public:
+    wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
+        { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
+    wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
+        { dc.SetClippingRegion(x, y, w, h); }
+
+    ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
+
+private:
+    wxDC& m_dc;
+};
+
 #endif
     // _WX_DC_H_BASE_