src/cocoa/dcclient.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/dcclient.mm
   3 // Purpose:     wxWindowDCImpl, wxPaintDCImpl, and wxClientDCImpl classes
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2003/04/01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 David Elliott
   9 // Licence:     wxWidgets licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13 #ifndef WX_PRECOMP
  14     #include "wx/log.h"
  15     #include "wx/window.h"
  16 #endif //WX_PRECOMP
  17
  18 #include "wx/cocoa/dcclient.h"
  19
  20 #import <AppKit/NSView.h>
  21 #import <AppKit/NSAffineTransform.h>
  22 #import <AppKit/NSColor.h>
  23 #import <AppKit/NSGraphicsContext.h>
  24 #import <AppKit/NSBezierPath.h>
  25 #import <AppKit/NSWindow.h>
  26
  27 /*
  28  * wxWindowDCImpl
  29  */
  30 IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxCocoaDCImpl)
  31
  32 wxWindowDCImpl::wxWindowDCImpl(wxDC *owner)
  33 :   wxCocoaDCImpl(owner)
  34 ,   m_window(NULL)
  35 ,   m_lockedNSView(NULL)
  36 {
  37 };
  38
  39 wxWindowDCImpl::wxWindowDCImpl(wxDC *owner, wxWindow *window)
  40 :   wxCocoaDCImpl(owner)
  41 ,   m_window(window)
  42 ,   m_lockedNSView(NULL)
  43 {
  44     wxLogDebug(wxT("non-client window DC's are not supported, oh well"));
  45 };
  46
  47 wxWindowDCImpl::~wxWindowDCImpl(void)
  48 {
  49     CocoaUnwindStackAndLoseFocus();
  50 };
  51
  52 bool wxWindowDCImpl::CocoaLockFocusOnNSView(WX_NSView nsview)
  53 {
  54     if([nsview lockFocusIfCanDraw])
  55     {
  56         sm_cocoaDCStack.Insert(this);
  57         CocoaApplyTransformations();
  58         m_lockedNSView = nsview;
  59         return true;
  60     }
  61     wxLogDebug(wxT("focus lock failed!"));
  62     return false;
  63 }
  64
  65 bool wxWindowDCImpl::CocoaUnlockFocusOnNSView()
  66 {
  67     [[m_lockedNSView window] flushWindow];
  68     [m_lockedNSView unlockFocus];
  69     m_lockedNSView = NULL;
  70     return true;
  71 }
  72
  73 bool wxWindowDCImpl::CocoaLockFocus()
  74 {
  75     wxLogTrace(wxTRACE_COCOA,wxT("Locking focus on wxWindowDCImpl=%p, NSView=%p"),this, m_window->GetNonClientNSView());
  76     NSAffineTransform *newTransform = CocoaGetWxToBoundsTransform([m_window->GetNonClientNSView() isFlipped], [m_window->GetNonClientNSView() bounds].size.height);
  77     [newTransform retain];
  78     [m_cocoaWxToBoundsTransform release];
  79     m_cocoaWxToBoundsTransform = newTransform;
  80     return CocoaLockFocusOnNSView(m_window->GetNonClientNSView());
  81 }
  82
  83 bool wxWindowDCImpl::CocoaUnlockFocus()
  84 {
  85     wxLogTrace(wxTRACE_COCOA,wxT("Unlocking focus on wxWindowDCImpl=%p, NSView=%p"),this, m_window->GetNonClientNSView());
  86     return CocoaUnlockFocusOnNSView();
  87 }
  88
  89 bool wxWindowDCImpl::CocoaGetBounds(void *rectData)
  90 {
  91     if(!rectData)
  92         return false;
  93     if(!m_lockedNSView)
  94         return false;
  95     NSRect *pRect = (NSRect*)rectData;
  96     *pRect = [m_lockedNSView bounds];
  97     return true;
  98 }
  99
 100 /*
 101  * wxClientDCImpl
 102  */
 103 IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl)
 104
 105 wxClientDCImpl::wxClientDCImpl(wxDC *owner)
 106 :   wxWindowDCImpl(owner)
 107 {
 108 };
 109
 110 wxClientDCImpl::wxClientDCImpl(wxDC *owner, wxWindow *window)
 111 :   wxWindowDCImpl(owner)
 112 {
 113     m_window = window;
 114 };
 115
 116 wxClientDCImpl::~wxClientDCImpl(void)
 117 {
 118     CocoaUnwindStackAndLoseFocus();
 119 };
 120
 121 bool wxClientDCImpl::CocoaLockFocus()
 122 {
 123     wxLogTrace(wxTRACE_COCOA,wxT("Locking focus on wxClientDCImpl=%p, NSView=%p"),this, m_window->GetNSView());
 124     NSAffineTransform *newTransform = m_window->CocoaGetWxToBoundsTransform();
 125     [newTransform retain];
 126     [m_cocoaWxToBoundsTransform release];
 127     m_cocoaWxToBoundsTransform = newTransform;
 128     return CocoaLockFocusOnNSView(m_window->GetNSView());
 129 }
 130
 131 bool wxClientDCImpl::CocoaUnlockFocus()
 132 {
 133     wxLogTrace(wxTRACE_COCOA,wxT("Unlocking focus on wxClientDCImpl=%p, NSView=%p"),this, m_window->GetNSView());
 134     return CocoaUnlockFocusOnNSView();
 135 }
 136
 137 /*
 138  * wxPaintDCImpl
 139  */
 140 IMPLEMENT_ABSTRACT_CLASS(wxPaintDCImpl, wxWindowDCImpl)
 141
 142 wxPaintDCImpl::wxPaintDCImpl(wxDC *owner)
 143 :   wxWindowDCImpl(owner)
 144 {
 145 };
 146
 147 wxPaintDCImpl::wxPaintDCImpl(wxDC *owner, wxWindow *window)
 148 :   wxWindowDCImpl(owner)
 149 {
 150     m_window = window;
 151     wxASSERT_MSG([NSView focusView]==window->GetNSView(), wxT("PaintDC's NSView does not have focus.  Please use wxPaintDCImpl only as the first DC created in a paint handler"));
 152     sm_cocoaDCStack.Insert(this);
 153     m_lockedNSView = window->GetNSView();
 154     NSAffineTransform *newTransform = window->CocoaGetWxToBoundsTransform();
 155     [newTransform retain];
 156     [m_cocoaWxToBoundsTransform release];
 157     m_cocoaWxToBoundsTransform = newTransform;
 158     CocoaApplyTransformations();
 159 };
 160
 161 wxPaintDCImpl::~wxPaintDCImpl(void)
 162 {
 163     CocoaUnwindStackAndLoseFocus();
 164 };
 165
 166 bool wxPaintDCImpl::CocoaLockFocus()
 167 {
 168     wxFAIL_MSG(wxT("wxPaintDCImpl cannot be asked to lock focus!"));
 169     return false;
 170 }
 171
 172 bool wxPaintDCImpl::CocoaUnlockFocus()
 173 {
 174     // wxPaintDCImpl focus can never be unlocked.
 175     return false;
 176 }
 177