1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/** <title>NSCachedImageRep</title>
<abstract>Cached image representation.</abstract>
Copyright (C) 1996 Free Software Foundation, Inc.
Author: Adam Fedor <fedor@gnu.org>
Date: Feb 1996
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
Keeps a representation of an image in an off-screen window. If the
message initFromWindow:rect: is sent with a nil window, one is created
using the rect information.
*/
#include <gnustep/gui/config.h>
#include <Foundation/NSString.h>
#include <Foundation/NSException.h>
#include <Foundation/NSUserDefaults.h>
#include <AppKit/NSCachedImageRep.h>
#include <AppKit/NSView.h>
#include <AppKit/NSWindow.h>
#include <AppKit/PSOperators.h>
@interface GSCacheW : NSWindow
@end
@implementation GSCacheW
- (void) _initDefaults
{
[super _initDefaults];
[self setExcludedFromWindowsMenu: YES];
[self setAutodisplay: NO];
[self setReleasedWhenClosed: NO];
}
- (void) display
{
}
- (void) displayIfNeeded
{
}
- (void) setViewsNeedDisplay: (BOOL)f
{
}
@end
@implementation NSCachedImageRep
// Initializing an NSCachedImageRep
- (id) initWithSize: (NSSize)aSize
depth: (NSWindowDepth)aDepth
separate: (BOOL)separate
alpha: (BOOL)alpha
{
NSWindow *win;
NSRect frame;
// FIXME: Only create new window when separate is YES
frame.origin = NSMakePoint(0,0);
frame.size = aSize;
win = [[GSCacheW alloc] initWithContentRect: frame
styleMask: NSBorderlessWindowMask
backing: NSBackingStoreRetained
defer: NO];
self = [self initWithWindow: win rect: frame];
RELEASE(win);
[self setAlpha: alpha];
[self setBitsPerSample: NSBitsPerSampleFromDepth(aDepth)];
return self;
}
- (id) initWithWindow: (NSWindow *)win rect: (NSRect)rect
{
[super init];
_window = RETAIN(win);
_rect = rect;
/* Either win or rect must be non-NULL. If rect is empty, we get the
frame info from the window. If win is nil we create it from the
rect information. */
if (NSIsEmptyRect(_rect))
{
if (!_window)
{
[NSException raise: NSInvalidArgumentException
format: @"Must specify either window or rect when "
@"creating NSCachedImageRep"];
}
_rect = [_window frame];
}
if (!_window)
_window = [[GSCacheW alloc] initWithContentRect: _rect
styleMask: NSBorderlessWindowMask
backing: NSBackingStoreRetained
defer: NO];
[self setSize: _rect.size];
[self setAlpha: NO];
[self setOpaque: YES];
[self setPixelsHigh: _rect.size.height];
[self setPixelsWide: _rect.size.width];
return self;
}
- (void) dealloc
{
RELEASE(_window);
[super dealloc];
}
// Getting the Representation
- (NSRect) rect
{
return _rect;
}
- (NSWindow *) window
{
return _window;
}
- (BOOL) draw
{
PScomposite(NSMinX(_rect), NSMinY(_rect), NSWidth(_rect), NSHeight(_rect),
[_window gState], 0, 0, NSCompositeSourceOver);
return YES;
}
// NSCoding protocol
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[super encodeWithCoder: aCoder];
[aCoder encodeObject: _window];
[aCoder encodeRect: _rect];
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
self = [super initWithCoder: aDecoder];
[aDecoder decodeValueOfObjCType: @encode(id) at: &_window];
_rect = [aDecoder decodeRect];
return self;
}
// NSCopying protocol
- (id) copyWithZone: (NSZone *)zone
{
// Cached images should not be copied
return nil;
}
@end
|
