Restore a use case that was lost with the last set of updates, using a

[wxWidgets.git] / src / cocoa / dc.mm

diff --git a/src/cocoa/dc.mm b/src/cocoa/dc.mm
index da2d539def056d9822a5a940d008e7dc3a0f9c74..7541eaf8c32b1494934796db36f6038ddda6213b 100644 (file)
--- a/src/cocoa/dc.mm
+++ b/src/cocoa/dc.mm
@@ -6,13 +6,16 @@
 // Created:     2003/04/01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 David Elliott
-// Licence:    wxWidgets licence
+// Licence:     wxWidgets licence
 /////////////////////////////////////////////////////////////////////////////
 
 #include "wx/wxprec.h"
+
+#include "wx/dc.h"
+
 #ifndef WX_PRECOMP
     #include "wx/log.h"
-    #include "wx/dc.h"
+    #include "wx/math.h" //math constants
 #endif //WX_PRECOMP
 
 #include "wx/cocoa/autorelease.h"
@@ -146,6 +149,7 @@ wxDC::wxDC(void)
 
 wxDC::~wxDC(void)
 {
+    [m_cocoaWxToBoundsTransform release];
 }
 
 bool wxDC::CocoaLockFocus()
@@ -185,6 +189,24 @@ void wxDC::CocoaApplyTransformations()
     // TODO: Apply device/logical/user position/scaling transformations
 }
 
+void wxDC::CocoaUnapplyTransformations()
+{
+    // NOTE: You *must* call this with focus held.
+    // Undo all transforms so we're back in true Cocoa coords with
+    // no scaling or flipping.
+    NSAffineTransform *invertTransform;
+    invertTransform = [m_cocoaWxToBoundsTransform copy];
+    [invertTransform invert];
+    [invertTransform concat];
+    [invertTransform release];
+}
+
+bool wxDC::CocoaGetBounds(void *rectData)
+{
+    // We don't know what we are so we can't return anything.
+    return false;
+}
+
 void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 {
     wxAutoNSAutoreleasePool pool;
@@ -346,17 +368,6 @@ int wxDCBase::LogicalToDeviceYRel(int y) const
 // cut here, the rest is stubs
 ///////////////////////////////////////////////////////////////////////////
 
-//-----------------------------------------------------------------------------
-// constants
-//-----------------------------------------------------------------------------
-
-#define mm2inches              0.0393700787402
-#define inches2mm              25.4
-#define mm2twips               56.6929133859
-#define twips2mm               0.0176388888889
-#define mm2pt                  2.83464566929
-#define pt2mm                  0.352777777778
-
 //-----------------------------------------------------------------------------
 // wxDC
 //-----------------------------------------------------------------------------
@@ -365,8 +376,8 @@ void wxDC::DoDrawIcon( const wxIcon &WXUNUSED(icon), int WXUNUSED(x), int WXUNUS
 {
 };
 
-void wxDC::DoDrawPoint( int x, int y ) 
-{ 
+void wxDC::DoDrawPoint( int x, int y )
+{
 };
 
 void wxDC::DoDrawPolygon( int, wxPoint *, int, int, int)
@@ -415,7 +426,7 @@ bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
 void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc)
 {
 }
-    
+
 void wxDC::SetPen(const wxPen& pen)
 {
     m_pen = pen;
@@ -496,7 +507,7 @@ void wxDC::DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask)
         fromRect: NSMakeRect(0.0,0.0,bmp.GetWidth(),bmp.GetHeight())
         operation: NSCompositeSourceOver
         fraction: 1.0];
-        
+
     [nsimage release];
     [context restoreGraphicsState];
 }
@@ -553,6 +564,22 @@ void wxDC::SetTextBackground( const wxColour &col )
 
 void wxDC::Clear()
 {
+    if(!CocoaTakeFocus()) return;
+
+    NSRect boundsRect;
+    if(!CocoaGetBounds(&boundsRect)) return;
+
+    NSGraphicsContext *context = [NSGraphicsContext currentContext];
+    [context saveGraphicsState];
+
+    // Undo all transforms so when we draw our bounds rect we
+    // really overwrite our bounds rect.
+    CocoaUnapplyTransformations();
+
+    [m_backgroundBrush.GetNSColor() set];
+    [NSBezierPath fillRect:boundsRect];
+
+    [context restoreGraphicsState];
 }
 
 void wxDC::SetBackground(const wxBrush& brush)
@@ -571,7 +598,7 @@ void wxDC::SetLogicalFunction(int)
 
 void wxDC::SetMapMode( int mode )
 {
-  switch (mode) 
+  switch (mode)
   {
     case wxMM_TWIPS:
       break;
@@ -635,7 +662,7 @@ void wxDC::ComputeScaleAndOrigin(void)
   m_scaleX = m_logicalScaleX * m_userScaleX;
   m_scaleY = m_logicalScaleY * m_userScaleY;
 
-  // CMB: if scale has changed call SetPen to recalulate the line width 
+  // CMB: if scale has changed call SetPen to recalulate the line width
   if (m_scaleX != origScaleX || m_scaleY != origScaleY)
   {
     // this is a bit artificial, but we need to force wxDC to think
@@ -646,4 +673,3 @@ void wxDC::ComputeScaleAndOrigin(void)
     SetPen(* pen);
   }
 };
-