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 f5fcb1c0074fc9539d59f92a1c9e603c8d622087..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:    wxWindows license
+// 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"
@@ -28,7 +31,7 @@
 #import <AppKit/NSTypesetter.h>
 #import <AppKit/NSImage.h>
 
-#include <wx/listimpl.cpp>
+#include "wx/listimpl.cpp"
 WX_DEFINE_LIST(wxCocoaDCStack);
 
 IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
@@ -140,13 +143,13 @@ bool wxDC::CocoaUnwindStackAndTakeFocus()
 
 wxDC::wxDC(void)
 {
-    m_cocoaFlipped = false;
-    m_cocoaHeight = 0.0;
+    m_cocoaWxToBoundsTransform = nil;
     m_pen = *wxBLACK_PEN;
 }
 
 wxDC::~wxDC(void)
 {
+    [m_cocoaWxToBoundsTransform release];
 }
 
 bool wxDC::CocoaLockFocus()
@@ -159,26 +162,49 @@ bool wxDC::CocoaUnlockFocus()
     return false;
 }
 
-void wxDC::CocoaApplyTransformations()
+/*static*/ WX_NSAffineTransform wxDC::CocoaGetWxToBoundsTransform(bool isFlipped, float height)
 {
+    NSAffineTransform *transform = nil;
     // This transform flips the graphics since wxDC uses top-left origin
-    if(!m_cocoaFlipped)
+    if(!isFlipped)
     {
         // The transform is auto released
-        NSAffineTransform *transform = [NSAffineTransform transform];
+        transform = [NSAffineTransform transform];
         /*  x' = 1x + 0y + 0
             y' = 0x + -1y + window's height
         */
         NSAffineTransformStruct matrix = {
             1,  0
         ,   0, -1
-        ,   0, m_cocoaHeight
+        ,   0, height
         };
         [transform setTransformStruct: matrix];
-        // Apply the transform 
-        [transform concat];
     }
-    // TODO: Apply scaling transformation
+    return transform;
+}
+
+void wxDC::CocoaApplyTransformations()
+{
+    [m_cocoaWxToBoundsTransform concat];
+    // 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)
@@ -342,17 +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
 //-----------------------------------------------------------------------------
@@ -361,8 +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)
@@ -411,7 +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;
@@ -492,7 +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];
 }
@@ -549,6 +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)
@@ -567,7 +598,7 @@ void wxDC::SetLogicalFunction(int)
 
 void wxDC::SetMapMode( int mode )
 {
-  switch (mode) 
+  switch (mode)
   {
     case wxMM_TWIPS:
       break;
@@ -631,15 +662,14 @@ 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
     // the pen has changed
-    wxPen* pen = & GetPen();
+    const wxPen* pen = & GetPen();
     wxPen tempPen;
     m_pen = tempPen;
     SetPen(* pen);
   }
 };
-