blob: b31baa051fb65f8fbc63f6664f6950b5abe5f1fd (
plain)
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
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/window_snapshot/window_snapshot.h"
#import <Cocoa/Cocoa.h>
#include "base/logging.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/memory/scoped_nsobject.h"
#include "ui/gfx/rect.h"
namespace browser {
bool GrabWindowSnapshot(gfx::NativeWindow window,
std::vector<unsigned char>* png_representation,
const gfx::Rect& snapshot_bounds) {
NSScreen* screen = [[NSScreen screens] objectAtIndex:0];
gfx::Rect screen_bounds = gfx::Rect(NSRectToCGRect([screen frame]));
gfx::Rect window_bounds = gfx::Rect(NSRectToCGRect([window frame]));
// Flip window coordinates based on the primary screen.
window_bounds.set_y(
screen_bounds.height() - window_bounds.y() - window_bounds.height());
// Convert snapshot bounds relative to window into bounds relative to
// screen.
gfx::Rect screen_snapshot_bounds = gfx::Rect(
window_bounds.origin().Add(snapshot_bounds.origin()),
snapshot_bounds.size());
DCHECK_LE(screen_snapshot_bounds.right(), window_bounds.right());
DCHECK_LE(screen_snapshot_bounds.bottom(), window_bounds.bottom());
png_representation->clear();
// Make sure to grab the "window frame" view so we get current tab +
// tabstrip.
NSView* view = [[window contentView] superview];
base::mac::ScopedCFTypeRef<CGImageRef> windowSnapshot(CGWindowListCreateImage(
screen_snapshot_bounds.ToCGRect(), kCGWindowListOptionIncludingWindow,
[[view window] windowNumber], kCGWindowImageBoundsIgnoreFraming));
if (CGImageGetWidth(windowSnapshot) <= 0)
return false;
scoped_nsobject<NSBitmapImageRep> rep(
[[NSBitmapImageRep alloc] initWithCGImage:windowSnapshot]);
NSData* data = [rep representationUsingType:NSPNGFileType properties:nil];
const unsigned char* buf = static_cast<const unsigned char*>([data bytes]);
NSUInteger length = [data length];
if (buf == NULL || length == 0)
return false;
png_representation->assign(buf, buf + length);
DCHECK(!png_representation->empty());
return true;
}
} // namespace browser
|
