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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: src/cocoa/dcmemory.mm | |
3 | // Purpose: wxMemoryDC class | |
4 | // Author: David Elliott | |
5 | // Modified by: | |
6 | // Created: 2003/03/16 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) 2002 David Elliott | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #include "wx/dcmemory.h" | |
2c23fe91 | 13 | #include "wx/log.h" |
28f3fe51 DE |
14 | |
15 | #import <AppKit/NSImage.h> | |
2c23fe91 DE |
16 | #import <AppKit/NSAffineTransform.h> |
17 | #import <AppKit/NSGraphicsContext.h> | |
28f3fe51 DE |
18 | |
19 | //----------------------------------------------------------------------------- | |
20 | // wxMemoryDC | |
21 | //----------------------------------------------------------------------------- | |
22 | ||
23 | IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxDC) | |
24 | ||
25 | wxMemoryDC::wxMemoryDC(void) | |
26 | { | |
27 | m_cocoaNSImage = NULL; | |
28 | m_ok = false; | |
29 | } | |
30 | ||
31 | wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) ) | |
32 | { | |
33 | m_cocoaNSImage = NULL; | |
34 | m_ok = false; | |
35 | } | |
36 | ||
37 | wxMemoryDC::~wxMemoryDC(void) | |
38 | { | |
39 | CocoaUnwindStackAndLoseFocus(); | |
40 | [m_cocoaNSImage release]; | |
41 | } | |
42 | ||
43 | bool wxMemoryDC::CocoaLockFocus() | |
44 | { | |
45 | if(m_cocoaNSImage) | |
46 | { | |
47 | [m_cocoaNSImage lockFocusOnRepresentation: m_selectedBitmap.GetNSBitmapImageRep()]; | |
48 | sm_cocoaDCStack.Insert(this); | |
49 | return true; | |
50 | } | |
51 | return false; | |
52 | } | |
53 | ||
54 | bool wxMemoryDC::CocoaUnlockFocus() | |
55 | { | |
56 | [m_cocoaNSImage unlockFocus]; | |
57 | return true; | |
58 | } | |
59 | ||
60 | void wxMemoryDC::SelectObject( const wxBitmap& bitmap ) | |
61 | { | |
62 | CocoaUnwindStackAndLoseFocus(); | |
63 | [m_cocoaNSImage release]; | |
64 | m_cocoaNSImage = nil; | |
65 | m_selectedBitmap = bitmap; | |
66 | if(m_selectedBitmap.Ok()) | |
67 | { | |
68 | m_cocoaNSImage = [[NSImage alloc] | |
69 | initWithSize:NSMakeSize(m_selectedBitmap.GetWidth(), | |
70 | m_selectedBitmap.GetHeight())]; | |
71 | [m_cocoaNSImage addRepresentation: m_selectedBitmap.GetNSBitmapImageRep()]; | |
72 | } | |
73 | } | |
74 | ||
75 | void wxMemoryDC::DoGetSize( int *width, int *height ) const | |
76 | { | |
77 | if(width) | |
78 | *width = m_selectedBitmap.GetWidth(); | |
79 | if(height) | |
80 | *height = m_selectedBitmap.GetHeight(); | |
81 | } | |
82 | ||
2c23fe91 DE |
83 | bool wxMemoryDC::CocoaDoBlitOnFocusedDC(wxCoord xdest, wxCoord ydest, |
84 | wxCoord width, wxCoord height, wxCoord xsrc, wxCoord ysrc, | |
85 | int logicalFunc, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask) | |
86 | { | |
87 | if(!m_selectedBitmap.Ok()) | |
88 | return false; | |
89 | ||
90 | NSAffineTransform *transform = [NSAffineTransform transform]; | |
91 | [transform translateXBy:xdest yBy:ydest]; | |
92 | ||
93 | NSAffineTransform *flipTransform = [NSAffineTransform transform]; | |
94 | /* x' = 1x + 0y + 0 | |
95 | y' = 0x + -1y + window's height | |
96 | */ | |
97 | NSAffineTransformStruct matrix = { | |
98 | 1, 0 | |
99 | , 0, -1 | |
100 | , 0, height | |
101 | }; | |
102 | [flipTransform setTransformStruct: matrix]; | |
103 | ||
104 | NSGraphicsContext *context = [NSGraphicsContext currentContext]; | |
105 | [context saveGraphicsState]; | |
106 | [transform concat]; | |
107 | [flipTransform concat]; | |
108 | ||
109 | wxLogDebug("[m_cocoaNSImage isFlipped]=%d", [m_cocoaNSImage isFlipped]); | |
110 | [m_cocoaNSImage drawAtPoint: NSMakePoint(0,0) | |
111 | fromRect: NSMakeRect(xsrc, | |
112 | m_selectedBitmap.GetHeight()-height-ysrc, | |
113 | width, height) | |
114 | operation: NSCompositeCopy // FIXME: raster ops | |
115 | fraction: 1.0]; | |
116 | ||
117 | [context restoreGraphicsState]; | |
118 | return false; | |
119 | } | |
120 |