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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: wxWidgets licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #include "wx/wxprec.h" | |
13 | ||
14 | #ifndef WX_PRECOMP | |
15 | #include "wx/log.h" | |
16 | #include "wx/dcmemory.h" | |
17 | #endif //WX_PRECOMP | |
18 | ||
19 | #include "wx/cocoa/autorelease.h" | |
20 | ||
21 | #import <AppKit/NSImage.h> | |
22 | #import <AppKit/NSAffineTransform.h> | |
23 | #import <AppKit/NSGraphicsContext.h> | |
24 | #import <AppKit/NSColor.h> | |
25 | #import <AppKit/NSBezierPath.h> | |
26 | ||
27 | //----------------------------------------------------------------------------- | |
28 | // wxMemoryDC | |
29 | //----------------------------------------------------------------------------- | |
30 | ||
31 | IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxDC) | |
32 | ||
33 | wxMemoryDC::wxMemoryDC(void) | |
34 | { | |
35 | m_cocoaNSImage = NULL; | |
36 | m_ok = false; | |
37 | } | |
38 | ||
39 | wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) ) | |
40 | { | |
41 | m_cocoaNSImage = NULL; | |
42 | m_ok = false; | |
43 | } | |
44 | ||
45 | wxMemoryDC::~wxMemoryDC(void) | |
46 | { | |
47 | CocoaUnwindStackAndLoseFocus(); | |
48 | [m_cocoaNSImage release]; | |
49 | } | |
50 | ||
51 | bool wxMemoryDC::CocoaLockFocus() | |
52 | { | |
53 | if(m_cocoaNSImage) | |
54 | { | |
55 | [m_cocoaNSImage lockFocus]; | |
56 | sm_cocoaDCStack.Insert(this); | |
57 | NSAffineTransform *newTransform = CocoaGetWxToBoundsTransform([m_cocoaNSImage isFlipped], [m_cocoaNSImage size].height); | |
58 | [newTransform retain]; | |
59 | [m_cocoaWxToBoundsTransform release]; | |
60 | m_cocoaWxToBoundsTransform = newTransform; | |
61 | CocoaApplyTransformations(); | |
62 | return true; | |
63 | } | |
64 | return false; | |
65 | } | |
66 | ||
67 | bool wxMemoryDC::CocoaUnlockFocus() | |
68 | { | |
69 | [m_cocoaNSImage unlockFocus]; | |
70 | return true; | |
71 | } | |
72 | ||
73 | // NOTE: The AppKit is unable to draw onto an NSBitmapImageRep so we must | |
74 | // instead copy the data to an offscreen window, then copy it back | |
75 | void wxMemoryDC::SelectObject( const wxBitmap& bitmap ) | |
76 | { | |
77 | wxAutoNSAutoreleasePool pool; | |
78 | if(m_selectedBitmap.Ok()) | |
79 | { | |
80 | CocoaTakeFocus(); | |
81 | wxASSERT(m_cocoaNSImage); | |
82 | m_selectedBitmap.SetNSBitmapImageRep( | |
83 | [[NSBitmapImageRep alloc] | |
84 | initWithFocusedViewRect:NSMakeRect(0.0,0.0, | |
85 | m_selectedBitmap.GetWidth(), | |
86 | m_selectedBitmap.GetHeight())]); | |
87 | } | |
88 | CocoaUnwindStackAndLoseFocus(); | |
89 | [m_cocoaNSImage release]; | |
90 | m_cocoaNSImage = nil; | |
91 | m_selectedBitmap = bitmap; | |
92 | if(m_selectedBitmap.Ok()) | |
93 | { | |
94 | // Create an offscreen window of the same size | |
95 | m_cocoaNSImage = [[NSImage alloc] | |
96 | initWithSize:NSMakeSize(m_selectedBitmap.GetWidth(), | |
97 | m_selectedBitmap.GetHeight())]; | |
98 | ||
99 | // Now copy the data | |
100 | NSImage *nsimage = [m_selectedBitmap.GetNSImage(false) retain]; | |
101 | [m_cocoaNSImage lockFocus]; | |
102 | [nsimage drawAtPoint: NSMakePoint(0,0) | |
103 | fromRect: NSMakeRect(0.0,0.0,m_selectedBitmap.GetWidth(),m_selectedBitmap.GetHeight()) | |
104 | operation: NSCompositeCopy | |
105 | fraction: 1.0]; | |
106 | [m_cocoaNSImage unlockFocus]; | |
107 | ||
108 | [nsimage release]; | |
109 | } | |
110 | } | |
111 | ||
112 | void wxMemoryDC::DoGetSize( int *width, int *height ) const | |
113 | { | |
114 | if(width) | |
115 | *width = m_selectedBitmap.GetWidth(); | |
116 | if(height) | |
117 | *height = m_selectedBitmap.GetHeight(); | |
118 | } | |
119 | ||
120 | bool wxMemoryDC::CocoaDoBlitOnFocusedDC(wxCoord xdest, wxCoord ydest, | |
121 | wxCoord width, wxCoord height, wxCoord xsrc, wxCoord ysrc, | |
122 | int logicalFunc, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask) | |
123 | { | |
124 | if(!m_selectedBitmap.Ok()) | |
125 | return false; | |
126 | ||
127 | NSAffineTransform *transform = [NSAffineTransform transform]; | |
128 | [transform translateXBy:xdest yBy:ydest]; | |
129 | ||
130 | NSAffineTransform *flipTransform = [NSAffineTransform transform]; | |
131 | /* x' = 1x + 0y + 0 | |
132 | y' = 0x + -1y + window's height | |
133 | */ | |
134 | NSAffineTransformStruct matrix = { | |
135 | 1, 0 | |
136 | , 0, -1 | |
137 | , 0, height | |
138 | }; | |
139 | [flipTransform setTransformStruct: matrix]; | |
140 | ||
141 | NSGraphicsContext *context = [NSGraphicsContext currentContext]; | |
142 | [context saveGraphicsState]; | |
143 | [transform concat]; | |
144 | [flipTransform concat]; | |
145 | ||
146 | wxLogTrace(wxTRACE_COCOA,wxT("[m_cocoaNSImage isFlipped]=%d"), [m_cocoaNSImage isFlipped]); | |
147 | [m_cocoaNSImage drawAtPoint: NSMakePoint(0,0) | |
148 | fromRect: NSMakeRect(xsrc, | |
149 | m_selectedBitmap.GetHeight()-height-ysrc, | |
150 | width, height) | |
151 | operation: NSCompositeCopy // FIXME: raster ops | |
152 | fraction: 1.0]; | |
153 | ||
154 | [context restoreGraphicsState]; | |
155 | return false; | |
156 | } | |
157 | ||
158 | bool wxMemoryDC::CocoaGetBounds(void *rectData) | |
159 | { | |
160 | if(!rectData) | |
161 | return false; | |
162 | if(!m_cocoaNSImage) | |
163 | return false; | |
164 | NSRect *pRect = (NSRect*)rectData; | |
165 | pRect->origin.x = 0.0; | |
166 | pRect->origin.y = 0.0; | |
167 | pRect->size = [m_cocoaNSImage size]; | |
168 | return true; | |
169 | } | |
170 |