src/cocoa/dcclient.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/dcclient.mm
   3 // Purpose:     wxWindowDC, wxPaintDC, and wxClientDC 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:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/dcclient.h"
  13 #include "wx/window.h"
  14
  15 #import <AppKit/NSView.h>
  16 #import <AppKit/NSAffineTransform.h>
  17
  18 /*
  19  * wxWindowDC
  20  */
  21 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
  22
  23 wxWindowDC::wxWindowDC(void)
  24 :   m_window(NULL)
  25 {
  26 };
  27
  28 wxWindowDC::wxWindowDC( wxWindow *window )
  29 :   m_window(window)
  30 {
  31     wxFAIL_MSG("non-client window DC's are not supported");
  32 };
  33
  34 wxWindowDC::~wxWindowDC(void)
  35 {
  36 };
  37
  38 /*
  39  * wxClientDC
  40  */
  41 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
  42
  43 wxClientDC::wxClientDC(void)
  44 {
  45 };
  46
  47 wxClientDC::wxClientDC( wxWindow *window )
  48 :   wxWindowDC(window)
  49 {
  50 };
  51
  52 wxClientDC::~wxClientDC(void)
  53 {
  54 };
  55
  56 /*
  57  * wxPaintDC
  58  */
  59 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)
  60
  61 wxPaintDC::wxPaintDC(void)
  62 {
  63 };
  64
  65 wxPaintDC::wxPaintDC( wxWindow *window )
  66 :   wxWindowDC(window)
  67 {
  68     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");
  69     // This transform flips the graphics since wxDC uses top-left origin
  70     if(![window->GetNSView() isFlipped])
  71     {
  72         // The transform is auto released
  73         NSAffineTransform *transform = [NSAffineTransform transform];
  74         /*  x' = 1x + 0y + 0
  75             y' = 0x + -1y + window's height
  76         */
  77         NSAffineTransformStruct matrix = {
  78             1,  0
  79         ,   0, -1
  80         ,   0, [window->GetNSView() bounds].size.height
  81         };
  82         [transform setTransformStruct: matrix];
  83         // Apply the transform
  84         [transform concat];
  85     }
  86     // TODO: Apply scaling transformation
  87 };
  88
  89 wxPaintDC::~wxPaintDC(void)
  90 {
  91 };
  92