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// Copyright (c) 2012 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 "ui/snapshot/snapshot.h"
#import <Cocoa/Cocoa.h>
#include "base/callback.h"
#include "base/logging.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/mac/sdk_forward_declarations.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/image/image.h"
namespace ui {
bool GrabViewSnapshot(gfx::NativeView view,
const gfx::Rect& snapshot_bounds,
gfx::Image* image) {
NSWindow* window = [view window];
NSScreen* screen = [[NSScreen screens] firstObject];
gfx::Rect screen_bounds = gfx::Rect(NSRectToCGRect([screen frame]));
// Get the view bounds relative to the screen
NSRect frame = [view convertRect:[view bounds] toView:nil];
frame = [window convertRectToScreen:frame];
gfx::Rect view_bounds = gfx::Rect(NSRectToCGRect(frame));
// Flip window coordinates based on the primary screen.
view_bounds.set_y(
screen_bounds.height() - view_bounds.y() - view_bounds.height());
// Convert snapshot bounds relative to window into bounds relative to
// screen.
gfx::Rect screen_snapshot_bounds = snapshot_bounds;
screen_snapshot_bounds.Offset(view_bounds.OffsetFromOrigin());
DCHECK_LE(screen_snapshot_bounds.right(), view_bounds.right());
DCHECK_LE(screen_snapshot_bounds.bottom(), view_bounds.bottom());
base::ScopedCFTypeRef<CGImageRef> windowSnapshot(
CGWindowListCreateImage(screen_snapshot_bounds.ToCGRect(),
kCGWindowListOptionIncludingWindow,
[window windowNumber],
kCGWindowImageBoundsIgnoreFraming));
if (CGImageGetWidth(windowSnapshot) <= 0)
return false;
NSImage* nsImage =
[[NSImage alloc] initWithCGImage:windowSnapshot size:NSZeroSize];
*image = gfx::Image(nsImage);
return true;
}
bool GrabWindowSnapshot(gfx::NativeWindow window,
const gfx::Rect& snapshot_bounds,
gfx::Image* image) {
// Make sure to grab the "window frame" view so we get current tab +
// tabstrip.
return GrabViewSnapshot([[window contentView] superview], snapshot_bounds,
image);
}
void GrabWindowSnapshotAndScaleAsync(
gfx::NativeWindow window,
const gfx::Rect& snapshot_bounds,
const gfx::Size& target_size,
GrabWindowSnapshotAsyncCallback callback) {
callback.Run(gfx::Image());
}
void GrabViewSnapshotAsync(gfx::NativeView view,
const gfx::Rect& source_rect,
const GrabWindowSnapshotAsyncCallback& callback) {
callback.Run(gfx::Image());
}
void GrabWindowSnapshotAsync(gfx::NativeWindow window,
const gfx::Rect& source_rect,
const GrabWindowSnapshotAsyncCallback& callback) {
return GrabViewSnapshotAsync([[window contentView] superview], source_rect,
callback);
}
} // namespace ui
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