X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/906c935a80b10d53cecf57f71ab5f3f4f1d529ec..4a699e3a59b19c21b6faae714b56cac5a75df2e2:/src/common/dcgraph.cpp

diff --git a/src/common/dcgraph.cpp b/src/common/dcgraph.cpp
index a06cd25382..41bbfa37c0 100644
--- a/src/common/dcgraph.cpp
+++ b/src/common/dcgraph.cpp
@@ -121,6 +121,12 @@ wxGCDC::wxGCDC(const wxEnhMetaFileDC& dc)
 }
 #endif
 
+wxGCDC::wxGCDC(wxGraphicsContext* context) :
+    wxDC( new wxGCDCImpl( this ) )
+{
+    SetGraphicsContext(context);
+}
+
 wxGCDC::wxGCDC() :
   wxDC( new wxGCDCImpl( this ) )
 {
@@ -181,13 +187,7 @@ wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc ) :
 {
     Init();
     wxGraphicsContext* context;
-#if wxUSE_CAIRO
-    wxGraphicsRenderer* renderer = wxGraphicsRenderer::GetCairoRenderer();
-    context = renderer->CreateContext(dc);
-#else
     context = wxGraphicsContext::Create(dc);
-#endif
-
     SetGraphicsContext( context );
 }
 
@@ -382,7 +382,10 @@ void wxGCDCImpl::SetTextForeground( const wxColour &col )
 {
     wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::SetTextForeground - invalid DC") );
 
-    if ( col != m_textForegroundColour )
+    // don't set m_textForegroundColour to an invalid colour as we'd crash
+    // later then (we use m_textForegroundColour.GetColor() without checking
+    // in a few places)
+    if ( col.IsOk() )
     {
         m_textForegroundColour = col;
         m_graphicContext->SetFont( m_font, m_textForegroundColour );
@@ -396,35 +399,6 @@ void wxGCDCImpl::SetTextBackground( const wxColour &col )
     m_textBackgroundColour = col;
 }
 
-void wxGCDCImpl::SetMapMode( wxMappingMode mode )
-{
-    switch (mode)
-    {
-    case wxMM_TWIPS:
-        SetLogicalScale( twips2mm * m_mm_to_pix_x, twips2mm * m_mm_to_pix_y );
-        break;
-
-    case wxMM_POINTS:
-        SetLogicalScale( pt2mm * m_mm_to_pix_x, pt2mm * m_mm_to_pix_y );
-        break;
-
-    case wxMM_METRIC:
-        SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
-        break;
-
-    case wxMM_LOMETRIC:
-        SetLogicalScale( m_mm_to_pix_x / 10.0, m_mm_to_pix_y / 10.0 );
-        break;
-
-    case wxMM_TEXT:
-    default:
-        SetLogicalScale( 1.0, 1.0 );
-        break;
-    }
-
-    ComputeScaleAndOrigin();
-}
-
 wxSize wxGCDCImpl::GetPPI() const
 {
     return wxSize(72, 72);
@@ -478,9 +452,6 @@ void wxGCDCImpl::SetFont( const wxFont &font )
 
 void wxGCDCImpl::SetPen( const wxPen &pen )
 {
-    if ( m_pen == pen )
-        return;
-
     m_pen = pen;
     if ( m_graphicContext )
     {
@@ -490,9 +461,6 @@ void wxGCDCImpl::SetPen( const wxPen &pen )
 
 void wxGCDCImpl::SetBrush( const wxBrush &brush )
 {
-    if (m_brush == brush)
-        return;
-
     m_brush = brush;
     if ( m_graphicContext )
     {
@@ -502,9 +470,6 @@ void wxGCDCImpl::SetBrush( const wxBrush &brush )
 
 void wxGCDCImpl::SetBackground( const wxBrush &brush )
 {
-    if (m_backgroundBrush == brush)
-        return;
-
     m_backgroundBrush = brush;
     if (!m_backgroundBrush.IsOk())
         return;
@@ -512,9 +477,6 @@ void wxGCDCImpl::SetBackground( const wxBrush &brush )
 
 void wxGCDCImpl::SetLogicalFunction( wxRasterOperationMode function )
 {
-    if (m_logicalFunction == function)
-        return;
-
     m_logicalFunction = function;
 
     wxCompositionMode mode = TranslateRasterOp( function );
@@ -896,6 +858,18 @@ bool wxGCDCImpl::DoStretchBlit(
         return false;
     }
 
+    wxRect subrect(source->LogicalToDeviceX(xsrc),
+                   source->LogicalToDeviceY(ysrc),
+                   source->LogicalToDeviceXRel(srcWidth),
+                   source->LogicalToDeviceYRel(srcHeight));
+    const wxRect subrectOrig = subrect;
+    // clip the subrect down to the size of the source DC
+    wxRect clip;
+    source->GetSize(&clip.width, &clip.height);
+    subrect.Intersect(clip);
+    if (subrect.width == 0)
+        return true;
+
     bool retval = true;
 
     wxCompositionMode formerMode = m_graphicContext->GetCompositionMode();
@@ -913,21 +887,6 @@ bool wxGCDCImpl::DoStretchBlit(
             ysrcMask = ysrc;
         }
 
-        wxRect subrect(source->LogicalToDeviceX(xsrc),
-                       source->LogicalToDeviceY(ysrc),
-                       source->LogicalToDeviceXRel(srcWidth),
-                       source->LogicalToDeviceYRel(srcHeight));
-
-        // if needed clip the subrect down to the size of the source DC
-        wxCoord sw, sh;
-        source->GetSize(&sw, &sh);
-        sw = source->LogicalToDeviceXRel(sw);
-        sh = source->LogicalToDeviceYRel(sh);
-        if (subrect.x + subrect.width > sw)
-            subrect.width = sw - subrect.x;
-        if (subrect.y + subrect.height > sh)
-            subrect.height = sh - subrect.y;
-
         wxBitmap blit = source->GetAsBitmap( &subrect );
 
         if ( blit.IsOk() )
@@ -935,8 +894,19 @@ bool wxGCDCImpl::DoStretchBlit(
             if ( !useMask && blit.GetMask() )
                 blit.SetMask(NULL);
 
-            m_graphicContext->DrawBitmap( blit, xdest, ydest,
-                                          dstWidth, dstHeight);
+            double x = xdest;
+            double y = ydest;
+            double w = dstWidth;
+            double h = dstHeight;
+            // adjust dest rect if source rect is clipped
+            if (subrect.width != subrectOrig.width || subrect.height != subrectOrig.height)
+            {
+                x += (subrect.x - subrectOrig.x) / double(subrectOrig.width) * dstWidth;
+                y += (subrect.y - subrectOrig.y) / double(subrectOrig.height) * dstHeight;
+                w *= double(subrect.width) / subrectOrig.width;
+                h *= double(subrect.height) / subrectOrig.height;
+            }
+            m_graphicContext->DrawBitmap(blit, x, y, w, h);
         }
         else
         {
@@ -1136,6 +1106,7 @@ void wxGCDCImpl::DoGradientFillLinear(const wxRect& rect,
     m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
     m_graphicContext->DrawRectangle(rect.x,rect.y,rect.width,rect.height);
     m_graphicContext->SetPen(m_pen);
+    m_graphicContext->SetBrush(m_brush);
 }
 
 void wxGCDCImpl::DoGradientFillConcentric(const wxRect& rect,
@@ -1164,6 +1135,7 @@ void wxGCDCImpl::DoGradientFillConcentric(const wxRect& rect,
 
     m_graphicContext->DrawRectangle(rect.x,rect.y,rect.width,rect.height);
     m_graphicContext->SetPen(m_pen);
+    m_graphicContext->SetBrush(m_brush);
 }
 
 void wxGCDCImpl::DoDrawCheckMark(wxCoord x, wxCoord y,