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94 lines
3.2 KiB
Plaintext
94 lines
3.2 KiB
Plaintext
/* vim: se cin sw=2 ts=2 et : */
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/* -*- Mode: C++; 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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interface nsIDocShell;
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interface nsIDOMCanvasRenderingContext2D;
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interface nsITaskbarPreview;
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interface nsITaskbarPreviewButton;
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/**
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* nsITaskbarPreviewController
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*
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* nsITaskbarPreviewController provides the behavior for the taskbar previews.
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* Its methods and properties are used by nsITaskbarPreview. Clients are
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* intended to provide their own implementation of this interface. Depending on
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* the interface the controller is attached to, only certain methods/attributes
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* are required to be implemented.
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*/
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[scriptable, uuid(4FC0AFBB-3E22-4FBA-AC21-953350AF0411)]
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interface nsITaskbarPreviewController : nsISupports
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{
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/**
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* The width of the preview image. This value is allowed to change at any
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* time. See drawPreview for more information.
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*/
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readonly attribute unsigned long width;
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/**
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* The height of the preview image. This value is allowed to change at any
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* time. See drawPreview for more information.
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*/
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readonly attribute unsigned long height;
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/**
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* The aspect ratio of the thumbnail - this does not need to match the ratio
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* of the preview. This value is allowed to change at any time. See
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* drawThumbnail for more information.
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*/
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readonly attribute float thumbnailAspectRatio;
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/**
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* Invoked by nsITaskbarPreview when it needs to render the preview. The
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* context is attached to a surface with the controller's width and height
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* which are obtained immediately before the call.
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*
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* Note that the context is not attached to a canvas element.
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*
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* @param ctx Canvas drawing context
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*/
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boolean drawPreview(in nsIDOMCanvasRenderingContext2D ctx);
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/**
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* Invoked by the taskbar preview when it needs to draw the thumbnail in the
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* taskbar's application preview window.
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*
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* Note: it is guaranteed that width/height == thumbnailAspectRatio
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* (modulo rounding errors)
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*
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* Also note that the context is not attached to a canvas element.
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*
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* @param ctx Canvas drawing context
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* @param width The width of the surface backing the drawing context
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* @param height The height of the surface backing the drawing context
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*/
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boolean drawThumbnail(in nsIDOMCanvasRenderingContext2D ctx, in unsigned long width, in unsigned long height);
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/**
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* Invoked when the user presses the close button on the tab preview.
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*/
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void onClose();
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/**
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* Invoked when the user clicks on the tab preview.
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*
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* @return true if the top level window corresponding to the preview should
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* be activated, false if activation is not accepted.
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*/
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boolean onActivate();
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/**
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* Invoked when one of the buttons on the window preview's toolbar is pressed.
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*
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* @param button The button that was pressed. This can be compared with the
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* buttons returned by nsITaskbarWindowPreview.getButton.
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*/
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void onClick(in nsITaskbarPreviewButton button);
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};
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