Really remove the droppings when there are no pages

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

diff --git a/src/cocoa/dc.mm b/src/cocoa/dc.mm
index da2d539def056d9822a5a940d008e7dc3a0f9c74..b6ee3bf591301e93d35f4570f356e20fd568c7b8 100644 (file)
--- a/src/cocoa/dc.mm
+++ b/src/cocoa/dc.mm
@@ -28,6 +28,7 @@
 #import <AppKit/NSTypesetter.h>
 #import <AppKit/NSImage.h>
 
+#include "wx/math.h" //math constants
 #include "wx/listimpl.cpp"
 WX_DEFINE_LIST(wxCocoaDCStack);
 
@@ -146,6 +147,7 @@ wxDC::wxDC(void)
 
 wxDC::~wxDC(void)
 {
+    [m_cocoaWxToBoundsTransform release];
 }
 
 bool wxDC::CocoaLockFocus()
@@ -185,6 +187,24 @@ 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 +366,6 @@ 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
 //-----------------------------------------------------------------------------
@@ -553,6 +562,22 @@ 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)