Bit fiddling.

[wxWidgets.git] / src / gtk1 / dcclient.cpp

diff --git a/src/gtk1/dcclient.cpp b/src/gtk1/dcclient.cpp
index 70bd684c1647aa3da4b2c577f713a8c52c67991e..3e8025961bda075be3270c6d79391c10b3c41080 100644 (file)
--- a/src/gtk1/dcclient.cpp
+++ b/src/gtk1/dcclient.cpp
@@ -2,9 +2,8 @@
 // Name:        dcclient.cpp
 // Purpose:
 // Author:      Robert Roebling
-// Created:     01/02/97
 // RCS-ID:      $Id$
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
+// Copyright:   (c) 1998 Robert Roebling, Markus Holzem, Chris Breeze
 // Licence:    wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
@@ -92,6 +91,7 @@ wxPaintDC::wxPaintDC(void)
   m_textGC = (GdkGC *) NULL;
   m_bgGC = (GdkGC *) NULL;
   m_cmap = (GdkColormap *) NULL;
+  m_isMemDC = FALSE;
 }
 
 wxPaintDC::wxPaintDC( wxWindow *window )
@@ -112,13 +112,14 @@ wxPaintDC::wxPaintDC( wxWindow *window )
   else
     m_cmap = gtk_widget_get_colormap( window->m_widget );
     
-  m_isDrawable = TRUE;
+  m_isMemDC = FALSE;
         
   SetUpDC();
 }
 
 wxPaintDC::~wxPaintDC(void)
 {
+  Destroy();
 }
 
 void wxPaintDC::FloodFill( long WXUNUSED(x1), long WXUNUSED(y1), 
@@ -137,8 +138,6 @@ void wxPaintDC::DrawLine( long x1, long y1, long x2, long y2 )
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   if (m_pen.GetStyle() != wxTRANSPARENT)
   {
     gdk_draw_line( m_window, m_penGC, 
@@ -150,8 +149,6 @@ void wxPaintDC::CrossHair( long x, long y )
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   if (m_pen.GetStyle() != wxTRANSPARENT)
   {
     int w = 0;
@@ -170,8 +167,6 @@ void wxPaintDC::DrawArc( long x1, long y1, long x2, long y2, double xc, double y
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   long xx1 = XLOG2DEV(x1); 
   long yy1 = YLOG2DEV(y1);
   long xx2 = XLOG2DEV(x2); 
@@ -220,8 +215,6 @@ void wxPaintDC::DrawEllipticArc( long x, long y, long width, long height, double
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   long xx = XLOG2DEV(x);    
   long yy = YLOG2DEV(y);
   long ww = m_signX * XLOG2DEVREL(width); 
@@ -244,8 +237,6 @@ void wxPaintDC::DrawPoint( long x, long y )
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   if (m_pen.GetStyle() != wxTRANSPARENT)
     gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
 }
@@ -254,8 +245,6 @@ void wxPaintDC::DrawLines( int n, wxPoint points[], long xoffset, long yoffset )
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   if (m_pen.GetStyle() == wxTRANSPARENT) return;
   
   for (int i = 0; i < n-1; i++)
@@ -272,8 +261,6 @@ void wxPaintDC::DrawLines( wxList *points, long xoffset, long yoffset )
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   if (m_pen.GetStyle() == wxTRANSPARENT) return;
   
   wxNode *node = points->First();
@@ -294,8 +281,6 @@ void wxPaintDC::DrawPolygon( int n, wxPoint points[], long xoffset, long yoffset
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
    if (!n) return;    // Nothing to draw
    GdkPoint *gdkpoints = new GdkPoint[n+1];
    int i;
@@ -321,8 +306,6 @@ void wxPaintDC::DrawPolygon( wxList *lines, long xoffset, long yoffset, int WXUN
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
    int n = lines->Number();
    GdkPoint *gdkpoints = new GdkPoint[n];
    wxNode *node = lines->First();
@@ -355,8 +338,6 @@ void wxPaintDC::DrawRectangle( long x, long y, long width, long height )
 {
   if (!Ok()) return;
 
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   long xx = XLOG2DEV(x);
   long yy = YLOG2DEV(y);
   long ww = m_signX * XLOG2DEVREL(width);
@@ -380,8 +361,6 @@ void wxPaintDC::DrawRoundedRectangle( long x, long y, long width, long height, d
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
   
   long xx = XLOG2DEV(x);    
@@ -447,8 +426,6 @@ void wxPaintDC::DrawEllipse( long x, long y, long width, long height )
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   long xx = XLOG2DEV(x);    
   long yy = YLOG2DEV(y);
   long ww = m_signX * XLOG2DEVREL(width); 
@@ -476,8 +453,6 @@ void wxPaintDC::DrawIcon( const wxIcon &icon, long x, long y, bool useMask )
   
   if (!icon.Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   int xx = XLOG2DEV(x);
   int yy = YLOG2DEV(y);
   
@@ -505,10 +480,9 @@ bool wxPaintDC::Blit( long xdest, long ydest, long width, long height,
 {
   if (!Ok()) return FALSE;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
+  wxClientDC *csrc = (wxClientDC*)source;
   
-  // CMB 20/5/98: add blitting of bitmaps
-  if (source->IsKindOf(CLASSINFO(wxMemoryDC)))
+  if (csrc->m_isMemDC)
   {
     wxMemoryDC* srcDC = (wxMemoryDC*)source;
     GdkBitmap* bmap = srcDC->m_selected.GetBitmap();
@@ -525,7 +499,6 @@ bool wxPaintDC::Blit( long xdest, long ydest, long width, long height,
     }
   }
 
-  wxClientDC *csrc = (wxClientDC*)source;
   gdk_window_copy_area ( m_window, m_penGC,
     XLOG2DEV(xdest), YLOG2DEV(ydest),
     csrc->GetWindow(),
@@ -547,8 +520,6 @@ void wxPaintDC::DrawText( const wxString &text, long x, long y, bool WXUNUSED(us
 {
   if (!Ok()) return;
 
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
   GdkFont *font = m_font.GetInternalFont( m_scaleY );
 
   x = XLOG2DEV(x);
@@ -618,9 +589,7 @@ void wxPaintDC::Clear(void)
 {
   if (!Ok()) return;
   
-  if (!m_isDrawable) ((wxMemoryDC*)this)->m_selected.DestroyImage();
-  
-  if (m_isDrawable)
+  if (!m_isMemDC)
   {
     gdk_window_clear( m_window );
   }
@@ -859,15 +828,12 @@ void wxPaintDC::DestroyClippingRegion(void)
 
 void wxPaintDC::SetUpDC(void)
 {
+  Destroy();
   m_ok = TRUE;
   m_logicalFunction = wxCOPY;
-  if (m_penGC) gdk_gc_unref( m_penGC );
   m_penGC = gdk_gc_new( m_window );
-  if (m_brushGC) gdk_gc_unref( m_brushGC );
   m_brushGC = gdk_gc_new( m_window );
-  if (m_textGC) gdk_gc_unref( m_textGC );
   m_textGC = gdk_gc_new( m_window );
-  if (m_bgGC) gdk_gc_unref( m_bgGC );
   m_bgGC = gdk_gc_new( m_window );
   SetTextForeground( m_textForegroundColour );
   SetTextBackground( m_textBackgroundColour );
@@ -889,6 +855,18 @@ void wxPaintDC::SetUpDC(void)
   }
 }
 
+void wxPaintDC::Destroy(void)
+{
+  if (m_penGC) gdk_gc_unref( m_penGC );
+  m_penGC = (GdkGC*) NULL;
+  if (m_brushGC) gdk_gc_unref( m_brushGC );
+  m_brushGC = (GdkGC*) NULL;
+  if (m_textGC) gdk_gc_unref( m_textGC );
+  m_textGC = (GdkGC*) NULL;
+  if (m_bgGC) gdk_gc_unref( m_bgGC );
+  m_bgGC = (GdkGC*) NULL;
+}
+
 GdkWindow *wxPaintDC::GetWindow(void)
 {
   return m_window;
@@ -1009,7 +987,7 @@ static void wx_spline_draw_point_array(wxDC *dc)
   }
 }
 
-void wxPaintDC::DrawOpenSpline( wxList *points )
+void wxPaintDC::DrawSpline( wxList *points )
 {
     wxPoint *p;
     double           cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;