X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d630f41d9b30c624f6806b5b6b28aa821d17362a..31ad423e4fb556ec225a63b161154d3bf3445c1b:/src/cocoa/dcclient.mm

diff --git a/src/cocoa/dcclient.mm b/src/cocoa/dcclient.mm
index 430f225b10..cbeed000b5 100644
--- a/src/cocoa/dcclient.mm
+++ b/src/cocoa/dcclient.mm
@@ -6,14 +6,22 @@
 // Created:     2003/04/01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 David Elliott
-// Licence:   	wxWindows license
+// Licence:   	wxWidgets licence
 /////////////////////////////////////////////////////////////////////////////
 
-#include "wx/dcclient.h"
-#include "wx/window.h"
+#include "wx/wxprec.h"
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+    #include "wx/window.h"
+    #include "wx/dcclient.h"
+#endif //WX_PRECOMP
 
 #import <AppKit/NSView.h>
 #import <AppKit/NSAffineTransform.h>
+#import <AppKit/NSColor.h>
+#import <AppKit/NSGraphicsContext.h>
+#import <AppKit/NSBezierPath.h>
+#import <AppKit/NSWindow.h>
 
 /*
  * wxWindowDC
@@ -22,19 +30,70 @@ IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
 
 wxWindowDC::wxWindowDC(void)
 :   m_window(NULL)
+,   m_lockedNSView(NULL)
 {
 };
 
 wxWindowDC::wxWindowDC( wxWindow *window )
 :   m_window(window)
+,   m_lockedNSView(NULL)
 {
-    wxFAIL_MSG("non-client window DC's are not supported");
+    wxLogDebug(wxT("non-client window DC's are not supported, oh well"));
 };
 
 wxWindowDC::~wxWindowDC(void)
 {
+    CocoaUnwindStackAndLoseFocus();
 };
 
+bool wxWindowDC::CocoaLockFocusOnNSView(WX_NSView nsview)
+{
+    if([nsview lockFocusIfCanDraw])
+    {
+        sm_cocoaDCStack.Insert(this);
+        m_cocoaFlipped = [nsview isFlipped];
+        m_cocoaHeight = [nsview bounds].size.height;
+        CocoaApplyTransformations();
+        m_lockedNSView = nsview;
+        return true;
+    }
+    wxLogDebug(wxT("focus lock failed!"));
+    return false;
+}
+
+bool wxWindowDC::CocoaUnlockFocusOnNSView()
+{
+    [[m_lockedNSView window] flushWindow];
+    [m_lockedNSView unlockFocus];
+    m_lockedNSView = NULL;
+    return true;
+}
+
+bool wxWindowDC::CocoaLockFocus()
+{
+    wxLogTrace(wxTRACE_COCOA,wxT("Locking focus on wxWindowDC=%p, NSView=%p"),this, m_window->GetNonClientNSView());
+    return CocoaLockFocusOnNSView(m_window->GetNonClientNSView());
+}
+
+bool wxWindowDC::CocoaUnlockFocus()
+{
+    wxLogTrace(wxTRACE_COCOA,wxT("Unlocking focus on wxWindowDC=%p, NSView=%p"),this, m_window->GetNonClientNSView());
+    return CocoaUnlockFocusOnNSView();
+}
+
+void wxWindowDC::Clear()
+{
+    if(!CocoaTakeFocus()) return;
+
+    NSGraphicsContext *context = [NSGraphicsContext currentContext];
+    [context saveGraphicsState];
+
+    [m_backgroundBrush.GetNSColor() set];
+    [NSBezierPath fillRect:[m_lockedNSView bounds]];
+
+    [context restoreGraphicsState];
+}
+
 /*
  * wxClientDC
  */
@@ -51,8 +110,21 @@ wxClientDC::wxClientDC( wxWindow *window )
 
 wxClientDC::~wxClientDC(void)
 {
+    CocoaUnwindStackAndLoseFocus();
 };
 
+bool wxClientDC::CocoaLockFocus()
+{
+    wxLogTrace(wxTRACE_COCOA,wxT("Locking focus on wxClientDC=%p, NSView=%p"),this, m_window->GetNSView());
+    return CocoaLockFocusOnNSView(m_window->GetNSView());
+}
+
+bool wxClientDC::CocoaUnlockFocus()
+{
+    wxLogTrace(wxTRACE_COCOA,wxT("Unlocking focus on wxClientDC=%p, NSView=%p"),this, m_window->GetNSView());
+    return CocoaUnlockFocusOnNSView();
+}
+
 /*
  * wxPaintDC
  */
@@ -65,28 +137,28 @@ wxPaintDC::wxPaintDC(void)
 wxPaintDC::wxPaintDC( wxWindow *window )
 {
     m_window = window;
-    wxASSERT_MSG([NSView focusView]==window->GetNSView(), "PaintDC's NSView does not have focus.  Please use wxPaintDC only as the first DC created in a paint handler");
-    // This transform flips the graphics since wxDC uses top-left origin
-    if(![window->GetNSView() isFlipped])
-    {
-        // The transform is auto released
-        NSAffineTransform *transform = [NSAffineTransform transform];
-        /*  x' = 1x + 0y + 0
-            y' = 0x + -1y + window's height
-        */
-        NSAffineTransformStruct matrix = {
-            1,  0
-        ,   0, -1
-        ,   0, [window->GetNSView() bounds].size.height
-        };
-        [transform setTransformStruct: matrix];
-        // Apply the transform 
-        [transform concat];
-    }
-    // TODO: Apply scaling transformation
+    wxASSERT_MSG([NSView focusView]==window->GetNSView(), wxT("PaintDC's NSView does not have focus.  Please use wxPaintDC only as the first DC created in a paint handler"));
+    sm_cocoaDCStack.Insert(this);
+    m_lockedNSView = window->GetNSView();
+    m_cocoaFlipped = [window->GetNSView() isFlipped];
+    m_cocoaHeight = [window->GetNSView() bounds].size.height;
+    CocoaApplyTransformations();
 };
 
 wxPaintDC::~wxPaintDC(void)
 {
+    CocoaUnwindStackAndLoseFocus();
 };
 
+bool wxPaintDC::CocoaLockFocus()
+{
+    wxFAIL_MSG(wxT("wxPaintDC cannot be asked to lock focus!"));
+    return false;
+}
+
+bool wxPaintDC::CocoaUnlockFocus()
+{
+    // wxPaintDC focus can never be unlocked.
+    return false;
+}
+