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