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+/* -*- 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: */