X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cd9da200285e3c625be91768c9ca61dc218c94d0..ef7eaedd63ffc4d6ab9a0fe5e3c91c49c14ffa11:/include/wx/dc.h

diff --git a/include/wx/dc.h b/include/wx/dc.h
index 1c2ddf548f..faee757e84 100644
--- a/include/wx/dc.h
+++ b/include/wx/dc.h
@@ -31,6 +31,65 @@
 
 #include "wx/list.h"            // we use wxList in inline functions
 
+class WXDLLEXPORT wxDCBase;
+
+class WXDLLEXPORT wxDrawObject
+{
+public:
+
+    wxDrawObject()
+    {
+        ResetBoundingBox();
+    }
+
+    virtual ~wxDrawObject() { }
+
+    virtual void Draw(wxDCBase& dc) 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;
+      }
+    }
+
+    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
 // ---------------------------------------------------------------------------
@@ -49,7 +108,7 @@ public:
         m_clipping = FALSE;
         m_ok = TRUE;
 
-        m_minX = m_minY = m_maxX = m_maxY = 0;
+        ResetBoundingBox();
 
         m_signX = m_signY = 1;
 
@@ -60,7 +119,7 @@ public:
         m_userScaleX = m_userScaleY =
         m_scaleX = m_scaleY = 1.0;
 
-        m_logicalFunction = -1;
+        m_logicalFunction = wxCOPY;
 
         m_backgroundMode = wxTRANSPARENT;
 
@@ -82,6 +141,13 @@ public:
     // graphic primitives
     // ------------------
 
+    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); }
@@ -330,6 +396,7 @@ 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; }
@@ -400,10 +467,29 @@ public:
 
     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
     {
-        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;
+      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()
+    {
+        m_isBBoxValid = FALSE;
+
+        m_minX = m_maxX = m_minY = m_maxY = 0;
     }
 
     // Get the final bounding box of the PostScript or Metafile picture.
@@ -577,6 +663,7 @@ protected:
     bool m_ok:1;
     bool m_clipping:1;
     bool m_isInteractive:1;
+    bool m_isBBoxValid:1;
 
     // coordinate system variables