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| -rw-r--r-- | sd/source/ui/presenter/PresenterCanvas.hxx | 320 |
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diff --git a/sd/source/ui/presenter/PresenterCanvas.hxx b/sd/source/ui/presenter/PresenterCanvas.hxx new file mode 100644 index 000000000..da2f51a79 --- /dev/null +++ b/sd/source/ui/presenter/PresenterCanvas.hxx @@ -0,0 +1,320 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#pragma once + +#include <basegfx/range/b2drectangle.hxx> +#include <com/sun/star/awt/Point.hpp> +#include <com/sun/star/awt/XWindowListener.hpp> +#include <com/sun/star/rendering/XSpriteCanvas.hpp> +#include <com/sun/star/rendering/XBitmap.hpp> +#include <comphelper/compbase.hxx> +#include <memory> + +namespace sd::presenter { class CanvasUpdateRequester; } +namespace com::sun::star::awt { class XWindow; } +namespace com::sun::star::geometry { struct AffineMatrix2D; } + +namespace sd::presenter { + +typedef comphelper::WeakComponentImplHelper < + css::rendering::XSpriteCanvas, + css::rendering::XBitmap, + css::awt::XWindowListener +> PresenterCanvasInterfaceBase; + +/** Wrapper around a shared canvas that forwards most of its methods to the + shared canvas. Most notable differences are: + 1. The transformation of the ViewState of forwarded calls is modified by adding + an offset. + 2. The clip polygon of the ViewState of forwarded calls is intersected + with a clip rectangle that can be set via SetClip(). + 3. Calls to updateScreen() are collected. One call to the updateScreen() + method of the shared canvas is made asynchronously. + + The canvas can use different canvases for sharing and for sprite + construction. This allows the shared canvas to be a canvas of sprite itself. +*/ +class PresenterCanvas + : public PresenterCanvasInterfaceBase +{ +public: + /** This constructor is used when a PresenterCanvas object is created + directly, typically by the PresenterCanvasFactory. + @param rxUpdateCanvas + This canvas is used to call updateScreen() at and to create + sprites. In the typical case this canvas is identical to the + rxSharedCanvas argument. + @param rxUpdateWindow + The window that belongs to the canvas given by the + rxUpdateCanvas argument. + @param rxSharedCanvas + The canvas that is wrapped by the new instance of this class. + Typically this is a regular XSpriteCanvas and then is identical + to the one given by the rxUpdateCanvas argument. It may be the + canvas of a sprite which does not support the XSpriteCanvas + interface. In that case the canvas that created the sprite can + be given as rxUpdateCanvas argument to allow to create further + sprites and to have proper calls to updateScreen(). + @param rxSharedWindow + The window that belongs to the canvas given by the + rxSharedCanvas argument. + @param rxWindow + The window that is represented by the new PresenterCanvas + object. It is expected to be a direct descendant of + rxSharedWindow. Its position inside rxSharedWindow defines the + offset of the canvas implemented by the new PresenterCanvas + object and rxSharedCanvas. + */ + PresenterCanvas ( + const css::uno::Reference<css::rendering::XSpriteCanvas>& rxUpdateCanvas, + const css::uno::Reference<css::awt::XWindow>& rxUpdateWindow, + const css::uno::Reference<css::rendering::XCanvas>& rxSharedCanvas, + const css::uno::Reference<css::awt::XWindow>& rxSharedWindow, + const css::uno::Reference<css::awt::XWindow>& rxWindow); + virtual ~PresenterCanvas() override; + PresenterCanvas(const PresenterCanvas&) = delete; + PresenterCanvas& operator=(const PresenterCanvas&) = delete; + + virtual void disposing(std::unique_lock<std::mutex>&) override; + + css::awt::Point GetOffset (const css::uno::Reference<css::awt::XWindow>& rxBaseWindow); + + /** Merge the given view state with the view state that translates the + (virtual) child canvas to the shared canvas. + */ + css::rendering::ViewState MergeViewState ( + const css::rendering::ViewState& rViewState, + const css::awt::Point& raOffset); + + /** Called by custom sprites to update their clip polygon so that they + are clipped at the borders of the canvas. This method has to be + called after each change of the sprite location so that the bounds + of the canvas can be transformed into the coordinate system of the + sprite. + */ + css::uno::Reference<css::rendering::XPolyPolygon2D> UpdateSpriteClip ( + const css::uno::Reference<css::rendering::XPolyPolygon2D>& rxOriginalClip, + const css::geometry::RealPoint2D& rLocation); + + // XCanvas + + virtual void SAL_CALL clear() override; + + virtual void SAL_CALL drawPoint ( + const css::geometry::RealPoint2D& aPoint, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState) override; + + virtual void SAL_CALL drawLine ( + const css::geometry::RealPoint2D& aStartPoint, + const css::geometry::RealPoint2D& aEndPoint, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState) override; + + virtual void SAL_CALL drawBezier ( + const css::geometry::RealBezierSegment2D& aBezierSegment, + const css::geometry::RealPoint2D& aEndPoint, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL drawPolyPolygon ( + const css::uno::Reference< css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL strokePolyPolygon ( + const css::uno::Reference< css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState, + const css::rendering::StrokeAttributes& aStrokeAttributes) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + strokeTexturedPolyPolygon ( + const css::uno::Reference< css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState, + const css::uno::Sequence< css::rendering::Texture >& aTextures, + const css::rendering::StrokeAttributes& aStrokeAttributes) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + strokeTextureMappedPolyPolygon( + const css::uno::Reference<css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState, + const css::uno::Sequence<css::rendering::Texture>& aTextures, + const css::uno::Reference<css::geometry::XMapping2D>& xMapping, + const css::rendering::StrokeAttributes& aStrokeAttributes) override; + + virtual css::uno::Reference<css::rendering::XPolyPolygon2D> SAL_CALL + queryStrokeShapes( + const css::uno::Reference<css::rendering::XPolyPolygon2D>& xPolyPolygon, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState, + const css::rendering::StrokeAttributes& aStrokeAttributes) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + fillPolyPolygon( + const css::uno::Reference<css::rendering::XPolyPolygon2D>& xPolyPolygon, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + fillTexturedPolyPolygon( + const css::uno::Reference<css::rendering::XPolyPolygon2D>& xPolyPolygon, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState, + const css::uno::Sequence<css::rendering::Texture>& xTextures) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + fillTextureMappedPolyPolygon( + const css::uno::Reference< css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState, + const css::uno::Sequence< css::rendering::Texture >& xTextures, + const css::uno::Reference< css::geometry::XMapping2D >& xMapping) override; + + virtual css::uno::Reference<css::rendering::XCanvasFont> SAL_CALL + createFont( + const css::rendering::FontRequest& aFontRequest, + const css::uno::Sequence< css::beans::PropertyValue >& aExtraFontProperties, + const css::geometry::Matrix2D& aFontMatrix) override; + + virtual css::uno::Sequence<css::rendering::FontInfo> SAL_CALL + queryAvailableFonts( + const css::rendering::FontInfo& aFilter, + const css::uno::Sequence< css::beans::PropertyValue >& aFontProperties) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + drawText( + const css::rendering::StringContext& aText, + const css::uno::Reference< css::rendering::XCanvasFont >& xFont, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState, + ::sal_Int8 nTextDirection) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + drawTextLayout( + const css::uno::Reference< css::rendering::XTextLayout >& xLayoutetText, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + drawBitmap( + const css::uno::Reference< css::rendering::XBitmap >& xBitmap, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState) override; + + virtual css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL + drawBitmapModulated( + const css::uno::Reference< css::rendering::XBitmap>& xBitmap, + const css::rendering::ViewState& aViewState, + const css::rendering::RenderState& aRenderState) override; + + virtual css::uno::Reference<css::rendering::XGraphicDevice> SAL_CALL + getDevice() override; + + // XSpriteCanvas + + css::uno::Reference< css::rendering::XAnimatedSprite > SAL_CALL + createSpriteFromAnimation ( + const css::uno::Reference< css::rendering::XAnimation >& animation) override; + + css::uno::Reference< css::rendering::XAnimatedSprite > SAL_CALL + createSpriteFromBitmaps ( + const css::uno::Sequence< + css::uno::Reference< css::rendering::XBitmap > >& animationBitmaps, + ::sal_Int8 interpolationMode) override; + + css::uno::Reference< css::rendering::XCustomSprite > SAL_CALL + createCustomSprite ( + const css::geometry::RealSize2D& spriteSize) override; + + css::uno::Reference< css::rendering::XSprite > SAL_CALL + createClonedSprite ( + const css::uno::Reference< css::rendering::XSprite >& original) override; + + sal_Bool SAL_CALL updateScreen (sal_Bool bUpdateAll) override; + + // XEventListener + + virtual void SAL_CALL disposing (const css::lang::EventObject& rEvent) override; + + // XWindowListener + + virtual void SAL_CALL windowResized (const css::awt::WindowEvent& rEvent) override; + + virtual void SAL_CALL windowMoved (const css::awt::WindowEvent& rEvent) override; + + virtual void SAL_CALL windowShown (const css::lang::EventObject& rEvent) override; + + virtual void SAL_CALL windowHidden (const css::lang::EventObject& rEvent) override; + + // XBitmap + + virtual css::geometry::IntegerSize2D SAL_CALL getSize() override; + + virtual sal_Bool SAL_CALL hasAlpha() override; + + virtual css::uno::Reference<css::rendering::XBitmap> SAL_CALL getScaledBitmap( + const css::geometry::RealSize2D& rNewSize, + sal_Bool bFast) override; + +private: + css::uno::Reference<css::rendering::XSpriteCanvas> mxUpdateCanvas; + css::uno::Reference<css::awt::XWindow> mxUpdateWindow; + css::uno::Reference<css::rendering::XCanvas> mxSharedCanvas; + css::uno::Reference<css::awt::XWindow> mxSharedWindow; + + /** The window for which a canvas is emulated. + */ + css::uno::Reference<css::awt::XWindow> mxWindow; + + /** Offset of the emulated canvas with respect to the shared canvas. + */ + css::awt::Point maOffset; + + /** The UpdateRequester is used by updateScreen() to schedule + updateScreen() calls at the shared canvas. + */ + std::shared_ptr<CanvasUpdateRequester> m_pUpdateRequester; + + /** When this flag is true (it is set to true after every call to + updateScreen()) then the next call to MergeViewState updates the + maOffset member. A possible optimization would set this flag only + to true when one of the windows between mxWindow and mxSharedWindow + changes its position. + */ + bool mbOffsetUpdatePending; + + ::basegfx::B2DRectangle GetClipRectangle ( + const css::geometry::AffineMatrix2D& rViewTransform, + const css::awt::Point& rOffset); + + css::rendering::ViewState MergeViewState (const css::rendering::ViewState& rViewState); + + /** @throws css::lang::DisposedException when the object has already been + disposed. + */ + void ThrowIfDisposed(); +}; + +} // end of namespace ::sd::presenter + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |