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 FloatRect toUserSpace(const NSRect& rect, NSWindow *destination)

    80 {

    81     FloatRect userRect = rect;

    82     userRect.setY(NSMaxY([screenForWindow(destination) frame]) - (userRect.y() + userRect.height())); // flip

    83     if (destination)

    84         userRect.scale(1 / [destination userSpaceScaleFactor]); // scale down

    85     return userRect;

    86 }

    87 

    88 NSRect toDeviceSpace(const FloatRect& rect, NSWindow *source)

    89 {

    90     FloatRect deviceRect = rect;

    91     if (source)

    92         deviceRect.scale([source userSpaceScaleFactor]); // scale up

    93     deviceRect.setY(NSMaxY([screenForWindow(source) frame]) - (deviceRect.y() + deviceRect.height())); // flip

    94     return deviceRect;

    95 }

    96 

    97 NSPoint flipScreenPoint(const NSPoint& screenPoint, NSScreen *screen)

    98 {

    99     NSPoint flippedPoint = screenPoint;

   100     flippedPoint.y = NSMaxY([screen frame]) - flippedPoint.y;

   101     return flippedPoint;

   102 }

   103 

   104 } // namespace WebCore