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0630b242ba
Changes to nsIScreen and nsIScreenManager were reviewed by roc. Changes to dom/ipc were reviewed by jimm. Changes to gfx/src/nsDeviceContext.cpp were reviewed by roc. Changes to widget/android were reviewed by snorp. Changes to widget/cocoa were reviewed by smichaud. Changes to widget/gtk were reviewed by roc. Changes to widget/windows were reviewed by jimm. Changes to widget/xpwidgets were reviewed by roc. --HG-- extra : rebase_source : 3ebb5763d75d16f73b3cb5e4fc5621188b6c9622
65 lines
2.7 KiB
Plaintext
65 lines
2.7 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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#include "nsIScreen.idl"
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[scriptable, uuid(e8a96e60-6b61-4a14-bacc-53891604b502)]
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interface nsIScreenManager : nsISupports
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{
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//
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// Returns the screen that contains the rectangle. If the rect overlaps
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// multiple screens, it picks the screen with the greatest area of intersection.
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//
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// The coordinates are in pixels (not twips) and in screen coordinates.
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//
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nsIScreen screenForRect ( in long left, in long top, in long width, in long height ) ;
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//
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// Returns the screen corresponding to the id. If no such screen exists,
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// this will throw NS_ERROR_FAILURE. The id is a unique numeric value
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// assigned to each screen, and is an attribute available on the nsIScreen
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// interface.
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nsIScreen screenForId ( in unsigned long id ) ;
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// The screen with the menubar/taskbar. This shouldn't be needed very
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// often.
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readonly attribute nsIScreen primaryScreen;
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// Holds the number of screens that are available
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readonly attribute unsigned long numberOfScreens;
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// The default DPI scaling factor of the screen environment (number of
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// screen pixels corresponding to 1 CSS px, at the default zoom level).
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//
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// This is currently fixed at 1.0 on most platforms, but varies on Windows
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// if the "logical DPI" scaling option in the Display control panel is set
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// to a value other than 100% (e.g. 125% or 150% are increasingly common
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// defaults on laptops with high-dpi screens). See bug 851520.
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//
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// NOTE that on OS X, this does -not- reflect the "backing scale factor"
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// used to support Retina displays, which is a per-display property,
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// not a system-wide scaling factor. The default ratio of CSS pixels to
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// Cocoa points remains 1:1, even on a Retina screen where one Cocoa point
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// corresponds to two device pixels. (This is exposed via other APIs:
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// see window.devicePixelRatio).
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//
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// NOTE also that on Linux, this does -not- currently reflect changes
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// to the system-wide (X11 or Gtk2) DPI value, as Firefox does not yet
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// honor these settings. See bug 798362 and bug 712898.
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readonly attribute float systemDefaultScale;
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// Returns the nsIScreen instance for the given native widget pointer;
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// the pointer is specific to the particular widget implementation,
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// and is generally of the same type that NS_NATIVE_WINDOW is.
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[noscript] nsIScreen screenForNativeWidget ( in voidPtr nativeWidget );
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};
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%{ C++
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%}
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