1 /* 2 * Copyright (C) 2007 Apple Inc. All rights reserved. 3 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) 4 * Copyright (C) 2008 Holger Hans Peter Freyther 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 16 * its contributors may be used to endorse or promote products derived 17 * from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "config.h" 32 #include "PlatformScreen.h" 33 34 #include "FloatRect.h" 35 #include "Frame.h" 36 #include "FrameView.h" 37 #include "HostWindow.h" 38 #include "Widget.h" 39 #include "QWebPageClient.h" 40 #include <QApplication> 41 #include <QDesktopWidget> 42 43 namespace WebCore { 44 45 static int screenNumber(Widget* w) 46 { 47 if (!w) 48 return 0; 49 50 QWebPageClient* client = w->root()->hostWindow()->platformPageClient(); 51 return client ? client->screenNumber() : 0; 52 } 53 54 int screenDepth(Widget* w) 55 { 56 return QApplication::desktop()->screen(screenNumber(w))->depth(); 57 } 58 59 int screenDepthPerComponent(Widget* w) 60 { 61 int depth = QApplication::desktop()->screen(0)->depth(); 62 if (w) { 63 QWebPageClient* client = w->root()->hostWindow()->platformPageClient(); 64 65 if (client) { 66 QWidget* view = client->ownerWidget(); 67 if (view) 68 depth = view->depth(); 69 } 70 } 71 // An interface to establish the actual number of bits per color 72 // doesn't exist in Qt, or probably at all, so use common-sense 73 // values for each screen depth and assume RGB/RGBA where appropriate. 74 // Per http://www.w3.org/TR/css3-mediaqueries/#color, 'If different color 75 // components are represented by different number of bits, the smallest 76 // number is used.' 77 switch (depth) { 78 case 8: 79 return 2; 80 case 32: 81 return 8; 82 default: 83 return qRound(depth / 3); 84 } 85 } 86 87 bool screenIsMonochrome(Widget* w) 88 { 89 return QApplication::desktop()->screen(screenNumber(w))->colorCount() == 2; 90 } 91 92 FloatRect screenRect(Widget* w) 93 { 94 QRect r = QApplication::desktop()->screenGeometry(screenNumber(w)); 95 return FloatRect(r.x(), r.y(), r.width(), r.height()); 96 } 97 98 FloatRect screenAvailableRect(Widget* w) 99 { 100 QRect r = QApplication::desktop()->availableGeometry(screenNumber(w)); 101 return FloatRect(r.x(), r.y(), r.width(), r.height()); 102 } 103 104 } // namespace WebCore 105