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
|
/* Copyright 2011-2014 Pierre Ossman for Cendio AB
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ApplicationServices/ApplicationServices.h>
#include <FL/Fl_Window.H>
#include <FL/x.H>
#include <rfb/LogWriter.h>
#include <rfb/Exception.h>
#include "i18n.h"
#include "OSXPixelBuffer.h"
using namespace rfb;
static rfb::LogWriter vlog("OSXPixelBuffer");
OSXPixelBuffer::OSXPixelBuffer(int width, int height) :
PlatformPixelBuffer(rfb::PixelFormat(32, 24, false, true,
255, 255, 255, 16, 8, 0),
width, height, NULL, width),
image(NULL)
{
CGColorSpaceRef lut;
CGDataProviderRef provider;
data = new rdr::U8[width * height * format.bpp/8];
if (data == NULL)
throw rfb::Exception(_("Not enough memory for framebuffer"));
lut = CGDisplayCopyColorSpace(kCGDirectMainDisplay);
if (!lut) {
vlog.error(_("Could not get screen color space. Using slower fallback."));
lut = CGColorSpaceCreateDeviceRGB();
if (!lut)
throw rfb::Exception("CGColorSpaceCreateDeviceRGB");
}
provider = CGDataProviderCreateWithData(NULL, data,
width * height * 4, NULL);
if (!provider)
throw rfb::Exception("CGDataProviderCreateWithData");
image = CGImageCreate(width, height, 8, 32, width * 4, lut,
kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Little,
provider, NULL, false, kCGRenderingIntentDefault);
CGColorSpaceRelease(lut);
CGDataProviderRelease(provider);
if (!image)
throw rfb::Exception("CGImageCreate");
}
OSXPixelBuffer::~OSXPixelBuffer()
{
CGImageRelease(image);
delete [] data;
}
void OSXPixelBuffer::draw(int src_x, int src_y, int x, int y, int w, int h)
{
CGContextRef gc;
CGRect rect;
gc = fl_gc;
CGContextSaveGState(gc);
// macOS Coordinates are from bottom left, not top left
src_y = height() - (src_y + h);
y = Fl_Window::current()->h() - (y + h);
// Reset the transformation matrix back to the default identity
// matrix as otherwise we get a massive performance hit
CGContextConcatCTM(gc, CGAffineTransformInvert(CGContextGetCTM(gc)));
// We have to use clipping to partially display an image
rect.origin.x = x;
rect.origin.y = y;
rect.size.width = w;
rect.size.height = h;
CGContextClipToRect(gc, rect);
rect.origin.x = x - src_x;
rect.origin.y = y - src_y;
rect.size.width = width();
rect.size.height = height();
CGContextDrawImage(gc, rect, image);
CGContextRestoreGState(gc);
}
|
