| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Use the <code>system.display</code> API to query display metadata. |
| namespace system.display { |
| |
| dictionary Bounds { |
| // The x-coordinate of the upper-left corner. |
| long left; |
| |
| // The y-coordinate of the upper-left corner. |
| long top; |
| |
| // The width of the display in pixels. |
| long width; |
| |
| // The height of the display in pixels. |
| long height; |
| }; |
| |
| dictionary Insets { |
| // The x-axis distance from the left bound. |
| long left; |
| |
| // The y-axis distance from the top bound. |
| long top; |
| |
| // The x-axis distance from the right bound. |
| long right; |
| |
| // The y-axis distance from the bottom bound. |
| long bottom; |
| }; |
| |
| dictionary Point { |
| // The x-coordinate of the point. |
| long x; |
| |
| // The y-coordinate of the point. |
| long y; |
| }; |
| |
| dictionary TouchCalibrationPair { |
| // The coordinates of the display point. |
| Point displayPoint; |
| |
| // The coordinates of the touch point corresponding to the display point. |
| Point touchPoint; |
| }; |
| |
| dictionary TouchCalibrationPairQuad { |
| // First pair of touch and display point required for touch calibration. |
| TouchCalibrationPair pair1; |
| |
| // Second pair of touch and display point required for touch calibration. |
| TouchCalibrationPair pair2; |
| |
| // Third pair of touch and display point required for touch calibration. |
| TouchCalibrationPair pair3; |
| |
| // Fourth pair of touch and display point required for touch calibration. |
| TouchCalibrationPair pair4; |
| }; |
| |
| dictionary DisplayMode { |
| // The display mode width in device independent (user visible) pixels. |
| long width; |
| |
| // The display mode height in device independent (user visible) pixels. |
| long height; |
| |
| // The display mode width in native pixels. |
| long widthInNativePixels; |
| |
| // The display mode height in native pixels. |
| long heightInNativePixels; |
| |
| // The display mode UI scale factor. |
| double uiScale; |
| |
| // The display mode device scale factor. |
| double deviceScaleFactor; |
| |
| // True if the mode is the display's native mode. |
| boolean isNative; |
| |
| // True if the display mode is currently selected. |
| boolean isSelected; |
| }; |
| |
| // Layout position, i.e. edge of parent that the display is attached to. |
| enum LayoutPosition { top, right, bottom, left }; |
| |
| dictionary DisplayLayout { |
| // The unique identifier of the display. |
| DOMString id; |
| |
| // The unique identifier of the parent display. Empty if this is the root. |
| DOMString parentId; |
| |
| // The layout position of this display relative to the parent. This will |
| // be ignored for the root. |
| LayoutPosition position; |
| |
| // The offset of the display along the connected edge. 0 indicates that |
| // the topmost or leftmost corners are aligned. |
| long offset; |
| }; |
| |
| dictionary DisplayUnitInfo { |
| // The unique identifier of the display. |
| DOMString id; |
| |
| // The user-friendly name (e.g. "HP LCD monitor"). |
| DOMString name; |
| |
| // Chrome OS only. Identifier of the display that is being mirrored if |
| // mirroring is enabled, otherwise empty. This will be set for all displays |
| // (including the display being mirrored). |
| DOMString mirroringSourceId; |
| |
| // True if this is the primary display. |
| boolean isPrimary; |
| |
| // True if this is an internal display. |
| boolean isInternal; |
| |
| // True if this display is enabled. |
| boolean isEnabled; |
| |
| // The number of pixels per inch along the x-axis. |
| double dpiX; |
| |
| // The number of pixels per inch along the y-axis. |
| double dpiY; |
| |
| // The display's clockwise rotation in degrees relative to the vertical |
| // position. |
| // Currently exposed only on ChromeOS. Will be set to 0 on other platforms. |
| long rotation; |
| |
| // The display's logical bounds. |
| Bounds bounds; |
| |
| // The display's insets within its screen's bounds. |
| // Currently exposed only on ChromeOS. Will be set to empty insets on |
| // other platforms. |
| Insets overscan; |
| |
| // The usable work area of the display within the display bounds. The work |
| // area excludes areas of the display reserved for OS, for example taskbar |
| // and launcher. |
| Bounds workArea; |
| |
| // The list of available display modes. The current mode will have |
| // isSelected=true. Only available on Chrome OS. Will be set to an empty |
| // array on other platforms. |
| DisplayMode[] modes; |
| |
| // True if this display has a touch input device associated with it. |
| boolean hasTouchSupport; |
| }; |
| |
| dictionary DisplayProperties { |
| // Chrome OS only. If set and not empty, enables mirroring for this display. |
| // Otherwise disables mirroring for this display. This value should indicate |
| // the id of the source display to mirror, which must not be the same as the |
| // id passed to setDisplayProperties. If set, no other property may be set. |
| DOMString? mirroringSourceId; |
| |
| // If set to true, makes the display primary. No-op if set to false. |
| boolean? isPrimary; |
| |
| // If set, sets the display's overscan insets to the provided values. Note |
| // that overscan values may not be negative or larger than a half of the |
| // screen's size. Overscan cannot be changed on the internal monitor. |
| // It's applied after <code>isPrimary</code> parameter. |
| Insets? overscan; |
| |
| // If set, updates the display's rotation. |
| // Legal values are [0, 90, 180, 270]. The rotation is set clockwise, |
| // relative to the display's vertical position. |
| // It's applied after <code>overscan</code> paramter. |
| long? rotation; |
| |
| // If set, updates the display's logical bounds origin along x-axis. Applied |
| // together with <code>boundsOriginY</code>, if <code>boundsOriginY</code> |
| // is set. Note that, when updating the display origin, some constraints |
| // will be applied, so the final bounds origin may be different than the one |
| // set. The final bounds can be retrieved using $(ref:getInfo). |
| // The bounds origin is applied after <code>rotation</code>. |
| // The bounds origin cannot be changed on the primary display. Note that is |
| // also invalid to set bounds origin values if <code>isPrimary</code> is |
| // also set (as <code>isPrimary</code> parameter is applied first). |
| long? boundsOriginX; |
| |
| // If set, updates the display's logical bounds origin along y-axis. |
| // See documentation for <code>boundsOriginX</code> parameter. |
| long? boundsOriginY; |
| |
| // If set, updates the display mode to the mode matching this value. |
| DisplayMode? displayMode; |
| }; |
| |
| callback DisplayInfoCallback = void (DisplayUnitInfo[] displayInfo); |
| callback DisplayLayoutCallback = void (DisplayLayout[] layouts); |
| callback SetDisplayUnitInfoCallback = void(); |
| callback SetDisplayLayoutCallback = void(); |
| callback NativeTouchCalibrationCallback = void(boolean success); |
| |
| interface Functions { |
| // Get the information of all attached display devices. |
| static void getInfo(DisplayInfoCallback callback); |
| |
| // Get the layout info for all displays. |
| // NOTE: This is only available to Chrome OS Kiosk apps and Web UI. |
| static void getDisplayLayout(DisplayLayoutCallback callback); |
| |
| // Updates the properties for the display specified by |id|, according to |
| // the information provided in |info|. On failure, $(ref:runtime.lastError) |
| // will be set. |
| // NOTE: This is only available to Chrome OS Kiosk apps and Web UI. |
| // |id|: The display's unique identifier. |
| // |info|: The information about display properties that should be changed. |
| // A property will be changed only if a new value for it is specified in |
| // |info|. |
| // |callback|: Empty function called when the function finishes. To find out |
| // whether the function succeeded, $(ref:runtime.lastError) should be |
| // queried. |
| static void setDisplayProperties( |
| DOMString id, |
| DisplayProperties info, |
| optional SetDisplayUnitInfoCallback callback); |
| |
| // Set the layout for all displays. Any display not included will use the |
| // default layout. If a layout would overlap or be otherwise invalid it |
| // will be adjusted to a valid layout. After layout is resolved, an |
| // onDisplayChanged event will be triggered. |
| // NOTE: This is only available to Chrome OS Kiosk apps and Web UI. |
| // |layouts|: The layout information, required for all displays except |
| // the primary display. |
| // |callback|: Empty function called when the function finishes. To find out |
| // whether the function succeeded, $(ref:runtime.lastError) should be |
| // queried. |
| static void setDisplayLayout(DisplayLayout[] layouts, |
| optional SetDisplayLayoutCallback callback); |
| |
| // Enables/disables the unified desktop feature. Note that this simply |
| // enables the feature, but will not change the actual desktop mode. |
| // (That is, if the desktop is in mirror mode, it will stay in mirror mode) |
| // NOTE: This is only available to Chrome OS Kiosk apps and Web UI. |
| // |enabled|: True if unified desktop should be enabled. |
| static void enableUnifiedDesktop(boolean enabled); |
| |
| // Starts overscan calibration for a display. This will show an overlay |
| // on the screen indicating the current overscan insets. If overscan |
| // calibration for display |id| is in progress this will reset calibration. |
| // |id|: The display's unique identifier. |
| static void overscanCalibrationStart(DOMString id); |
| |
| // Adjusts the current overscan insets for a display. Typically this should |
| // etiher move the display along an axis (e.g. left+right have the same |
| // value) or scale it along an axis (e.g. top+bottom have opposite values). |
| // Each Adjust call is cumulative with previous calls since Start. |
| // |id|: The display's unique identifier. |
| // |delta|: The amount to change the overscan insets. |
| static void overscanCalibrationAdjust(DOMString id, Insets delta); |
| |
| // Resets the overscan insets for a display to the last saved value (i.e |
| // before Start was called). |
| // |id|: The display's unique identifier. |
| static void overscanCalibrationReset(DOMString id); |
| |
| // Complete overscan adjustments for a display by saving the current values |
| // and hiding the overlay. |
| // |id|: The display's unique identifier. |
| static void overscanCalibrationComplete(DOMString id); |
| |
| // Displays the native touch calibration UX for the display with |id| as |
| // display id. This will show an overlay on the screen with required |
| // instructions on how to proceed. The callback will be invoked in case of |
| // successful calibraion only. If the calibration fails, this will throw an |
| // error. |
| // |id|: The display's unique identifier. |
| // |callback|: Optional callback to inform the caller that the touch |
| // calibration has ended. The argument of the callback informs if the |
| // calibration was a success or not. |
| static void showNativeTouchCalibration( |
| DOMString id, optional NativeTouchCalibrationCallback callback); |
| |
| // Starts custom touch calibration for a display. This should be called when |
| // using a custom UX for collecting calibration data. If another touch |
| // calibration is already in progress this will throw an error. |
| // |id|: The display's unique identifier. |
| static void startCustomTouchCalibration(DOMString id); |
| |
| // Sets the touch calibration pairs for a display. These |pairs| would be |
| // used to calibrate the touch screen for display with |id| called in |
| // startCustomTouchCalibration(). Always call |startCustomTouchCalibration| |
| // before calling this method. If another touch calibration is already in |
| // progress this will throw an error. |
| // |pairs|: The pairs of point used to calibrate the display. |
| // |bounds|: Bounds of the display when the touch calibration was performed. |
| // |bounds.left| and |bounds.top| values are ignored. |
| static void completeCustomTouchCalibration(TouchCalibrationPairQuad pairs, |
| Bounds bounds); |
| |
| // Resets the touch calibration for the display and brings it back to its |
| // default state by clearing any touch calibration data associated with the |
| // display. |
| // |id|: The display's unique identifier. |
| static void clearTouchCalibration(DOMString id); |
| }; |
| |
| interface Events { |
| // Fired when anything changes to the display configuration. |
| static void onDisplayChanged(); |
| }; |
| }; |