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comparison: widget/nsIScreenManager.idl
widget/nsIScreenManager.idl
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:6591c4ef3ef1 |
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| 1 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "nsISupports.idl" | |
| 8 #include "nsIScreen.idl" | |
| 9 | |
| 10 [scriptable, uuid(1C195990-FF9E-412B-AFE7-67D1C660BB27)] | |
| 11 interface nsIScreenManager : nsISupports | |
| 12 { | |
| 13 // | |
| 14 // Returns the screen that contains the rectangle. If the rect overlaps | |
| 15 // multiple screens, it picks the screen with the greatest area of intersection. | |
| 16 // | |
| 17 // The coordinates are in pixels (not twips) and in screen coordinates. | |
| 18 // | |
| 19 nsIScreen screenForRect ( in long left, in long top, in long width, in long height ) ; | |
| 20 | |
| 21 // The screen with the menubar/taskbar. This shouldn't be needed very | |
| 22 // often. | |
| 23 readonly attribute nsIScreen primaryScreen; | |
| 24 | |
| 25 // Holds the number of screens that are available | |
| 26 readonly attribute unsigned long numberOfScreens; | |
| 27 | |
| 28 // The default DPI scaling factor of the screen environment (number of | |
| 29 // screen pixels corresponding to 1 CSS px, at the default zoom level). | |
| 30 // | |
| 31 // This is currently fixed at 1.0 on most platforms, but varies on Windows | |
| 32 // if the "logical DPI" scaling option in the Display control panel is set | |
| 33 // to a value other than 100% (e.g. 125% or 150% are increasingly common | |
| 34 // defaults on laptops with high-dpi screens). See bug 851520. | |
| 35 // | |
| 36 // NOTE that on OS X, this does -not- reflect the "backing scale factor" | |
| 37 // used to support Retina displays, which is a per-display property, | |
| 38 // not a system-wide scaling factor. The default ratio of CSS pixels to | |
| 39 // Cocoa points remains 1:1, even on a Retina screen where one Cocoa point | |
| 40 // corresponds to two device pixels. (This is exposed via other APIs: | |
| 41 // see window.devicePixelRatio). | |
| 42 // | |
| 43 // NOTE also that on Linux, this does -not- currently reflect changes | |
| 44 // to the system-wide (X11 or Gtk2) DPI value, as Firefox does not yet | |
| 45 // honor these settings. See bug 798362 and bug 712898. | |
| 46 readonly attribute float systemDefaultScale; | |
| 47 | |
| 48 // Returns the nsIScreen instance for the given native widget pointer; | |
| 49 // the pointer is specific to the particular widget implementation, | |
| 50 // and is generally of the same type that NS_NATIVE_WINDOW is. | |
| 51 [noscript] nsIScreen screenForNativeWidget ( in voidPtr nativeWidget ); | |
| 52 }; | |
| 53 | |
| 54 | |
| 55 %{ C++ | |
| 56 | |
| 57 %} |
