1 /* 2 * Copyright (C) 2006 Apple Computer, 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #import "config.h" 27 #import "PlatformScreen.h" 28 29 #import "FloatRect.h" 30 #import "Frame.h" 31 #import "FrameView.h" 32 #import "Page.h" 33 34 namespace WebCore { 35 36 int screenDepth(Widget*) 37 { 38 return NSBitsPerPixelFromDepth([[NSScreen deepestScreen] depth]); 39 } 40 41 int screenDepthPerComponent(Widget*) 42 { 43 return NSBitsPerSampleFromDepth([[NSScreen deepestScreen] depth]); 44 } 45 46 bool screenIsMonochrome(Widget*) 47 { 48 return false; 49 } 50 51 // These functions scale between screen and page coordinates because JavaScript/DOM operations 52 // assume that the screen and the page share the same coordinate system. 53 54 FloatRect screenRect(Widget* widget) 55 { 56 NSWindow *window = widget ? [widget->platformWidget() window] : nil; 57 return toUserSpace([screenForWindow(window) frame], window); 58 } 59 60 FloatRect screenAvailableRect(Widget* widget) 61 { 62 NSWindow *window = widget ? [widget->platformWidget() window] : nil; 63 return toUserSpace([screenForWindow(window) visibleFrame], window); 64 } 65 66 NSScreen *screenForWindow(NSWindow *window) 67 { 68 NSScreen *screen = [window screen]; // nil if the window is off-screen 69 if (screen) 70 return screen; 71 72 NSArray *screens = [NSScreen screens]; 73 if ([screens count] > 0) 74 return [screens objectAtIndex:0]; // screen containing the menubar 75 76 return nil; 77 } 78 79 static CGFloat windowScaleFactor(NSWindow *window) 80 { 81 #if !defined(BUILDING_ON_LEOPARD) && !defined(BUILDING_ON_SNOW_LEOPARD) 82 return [window backingScaleFactor]; 83 #else 84 return [window userSpaceScaleFactor]; 85 #endif 86 } 87 88 FloatRect toUserSpace(const NSRect& rect, NSWindow *destination) 89 { 90 FloatRect userRect = rect; 91 userRect.setY(NSMaxY([screenForWindow(destination) frame]) - (userRect.y() + userRect.height())); // flip 92 if (destination) 93 userRect.scale(1 / windowScaleFactor(destination)); // scale down 94 return userRect; 95 } 96 97 NSRect toDeviceSpace(const FloatRect& rect, NSWindow *source) 98 { 99 FloatRect deviceRect = rect; 100 if (source) 101 deviceRect.scale(windowScaleFactor(source)); // scale up 102 deviceRect.setY(NSMaxY([screenForWindow(source) frame]) - (deviceRect.y() + deviceRect.height())); // flip 103 return deviceRect; 104 } 105 106 NSPoint flipScreenPoint(const NSPoint& screenPoint, NSScreen *screen) 107 { 108 NSPoint flippedPoint = screenPoint; 109 flippedPoint.y = NSMaxY([screen frame]) - flippedPoint.y; 110 return flippedPoint; 111 } 112 113 } // namespace WebCore 114