1/*
2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "WebScreenInfoFactory.h"
33
34#import <AppKit/AppKit.h>
35
36#include "WebScreenInfo.h"
37
38namespace WebKit {
39
40static NSScreen* screenForWindow(NSWindow* window)
41{
42    NSScreen* screen = [window screen];  // nil if the window is off-screen
43    if (screen)
44        return screen;
45
46    NSArray* screens = [NSScreen screens];
47    if ([screens count] > 0)
48        return [screens objectAtIndex:0];  // screen containing the menubar
49
50    return nil;
51}
52
53static WebRect toUserSpace(const NSRect& rect, NSWindow* destination)
54{
55    CGRect userRect = NSRectToCGRect(rect);
56
57    userRect.origin.y =
58        NSMaxY([screenForWindow(destination) frame]) - (userRect.origin.y + userRect.size.height); // flip
59
60    if (destination) {
61        CGFloat scale = 1 / [destination userSpaceScaleFactor];  // scale down
62        userRect.origin.x *= scale;
63        userRect.origin.y *= scale;
64        userRect.size.width *= scale;
65        userRect.size.height *= scale;
66    }
67
68    return WebRect(userRect.origin.x,
69                   userRect.origin.y,
70                   userRect.size.width,
71                   userRect.size.height);
72}
73
74WebScreenInfo WebScreenInfoFactory::screenInfo(NSView* view)
75{
76    NSString *colorSpace = NSColorSpaceFromDepth([[NSScreen deepestScreen] depth]);
77
78    WebScreenInfo results;
79    results.depth =
80        NSBitsPerPixelFromDepth([[NSScreen deepestScreen] depth]);
81    results.depthPerComponent =
82        NSBitsPerSampleFromDepth([[NSScreen deepestScreen] depth]);
83    results.isMonochrome = colorSpace == NSCalibratedWhiteColorSpace
84                        || colorSpace == NSCalibratedBlackColorSpace
85                        || colorSpace == NSDeviceWhiteColorSpace
86                        || colorSpace == NSDeviceBlackColorSpace;
87    results.rect =
88        toUserSpace([screenForWindow([view window]) frame], [view window]);
89    results.availableRect =
90        toUserSpace([screenForWindow([view window]) visibleFrame], [view window]);
91    return results;
92}
93
94} // namespace WebKit
95