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| -rw-r--r-- | canvas/source/vcl/canvashelper.hxx | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/canvas/source/vcl/canvashelper.hxx b/canvas/source/vcl/canvashelper.hxx new file mode 100644 index 000000000..ba385110b --- /dev/null +++ b/canvas/source/vcl/canvashelper.hxx @@ -0,0 +1,309 @@ +/* -*- 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 <com/sun/star/geometry/IntegerPoint2D.hpp> +#include <com/sun/star/geometry/IntegerRectangle2D.hpp> +#include <com/sun/star/rendering/IntegerBitmapLayout.hpp> +#include <com/sun/star/rendering/XCanvas.hpp> + +#include "cachedbitmap.hxx" +#include "outdevprovider.hxx" + + +namespace vclcanvas +{ + class SpriteCanvas; + + /** Helper class for basic canvas functionality. Also offers + optional backbuffer painting, when providing it with a second + OutputDevice to render into. + */ + class CanvasHelper + { + public: + /** Create canvas helper + */ + CanvasHelper(); + + /// make noncopyable + CanvasHelper(const CanvasHelper&) = delete; + const CanvasHelper& operator=(const CanvasHelper&) = delete; + + /// Release all references + void disposing(); + + /** Initialize canvas helper + + This method late-initializes the canvas helper, providing + it with the necessary device and output objects. Note that + the CanvasHelper does <em>not</em> take ownership of the + passed rDevice reference, nor does it perform any + reference counting. Thus, to prevent the reference counted + SpriteCanvas object from deletion, the user of this class + is responsible for holding ref-counted references itself! + + @param rDevice + Reference device this canvas is associated with + + @param rOutDev + Set primary output device for this canvas. That's where + all content is output to. + + @param bProtect + When true, all output operations preserve outdev + state. When false, outdev state might change at any time. + + @param bHaveAlpha + When true, hasAlpha() will always return true, otherwise, false. + */ + void init( css::rendering::XGraphicDevice& rDevice, + const OutDevProviderSharedPtr& rOutDev, + bool bProtect, + bool bHaveAlpha ); + + /** Set primary output device + + This changes the primary output device, where rendering is + sent to. + */ + void setOutDev( const OutDevProviderSharedPtr& rOutDev, + bool bProtect); + + /** Set secondary output device + + Used for sprites, to generate mask bitmap. + */ + void setBackgroundOutDev( const OutDevProviderSharedPtr& rOutDev ); + + + // CanvasHelper functionality + // ========================== + + // XCanvas (only providing, not implementing the + // interface. Also note subtle method parameter differences) + void clear(); + void drawLine( const css::rendering::XCanvas* rCanvas, + const css::geometry::RealPoint2D& aStartPoint, + const css::geometry::RealPoint2D& aEndPoint, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState ); + void drawBezier( const css::rendering::XCanvas* rCanvas, + const css::geometry::RealBezierSegment2D& aBezierSegment, + const css::geometry::RealPoint2D& aEndPoint, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState ); + css::uno::Reference< css::rendering::XCachedPrimitive > + drawPolyPolygon( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState ); + css::uno::Reference< css::rendering::XCachedPrimitive > + strokePolyPolygon( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + const css::rendering::StrokeAttributes& strokeAttributes ); + css::uno::Reference< css::rendering::XCachedPrimitive > + strokeTexturedPolyPolygon( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + const css::uno::Sequence< + css::rendering::Texture >& textures, + const css::rendering::StrokeAttributes& strokeAttributes ); + css::uno::Reference< css::rendering::XCachedPrimitive > + strokeTextureMappedPolyPolygon( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + const css::uno::Sequence< + css::rendering::Texture >& textures, + const css::uno::Reference< + css::geometry::XMapping2D >& xMapping, + const css::rendering::StrokeAttributes& strokeAttributes ); + css::uno::Reference< css::rendering::XPolyPolygon2D > + queryStrokeShapes( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + const css::rendering::StrokeAttributes& strokeAttributes ); + css::uno::Reference< css::rendering::XCachedPrimitive > + fillPolyPolygon( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState ); + css::uno::Reference< css::rendering::XCachedPrimitive > + fillTexturedPolyPolygon( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + const css::uno::Sequence< + css::rendering::Texture >& textures ); + css::uno::Reference< css::rendering::XCachedPrimitive > + fillTextureMappedPolyPolygon( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XPolyPolygon2D >& xPolyPolygon, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + const css::uno::Sequence< + css::rendering::Texture >& textures, + const css::uno::Reference< + css::geometry::XMapping2D >& xMapping ); + + css::uno::Reference< css::rendering::XCanvasFont > + createFont( const css::rendering::XCanvas* rCanvas, + const css::rendering::FontRequest& fontRequest, + const css::uno::Sequence< + css::beans::PropertyValue >& extraFontProperties, + const css::geometry::Matrix2D& fontMatrix ); + + css::uno::Sequence< css::rendering::FontInfo > + queryAvailableFonts( const css::rendering::XCanvas* rCanvas, + const css::rendering::FontInfo& aFilter, + const css::uno::Sequence< + css::beans::PropertyValue >& aFontProperties ); + + css::uno::Reference< css::rendering::XCachedPrimitive > + drawText( const css::rendering::XCanvas* rCanvas, + const css::rendering::StringContext& text, + const css::uno::Reference< + css::rendering::XCanvasFont >& xFont, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + sal_Int8 textDirection ); + + css::uno::Reference< css::rendering::XCachedPrimitive > + drawTextLayout( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XTextLayout >& laidOutText, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState ); + + css::uno::Reference< css::rendering::XCachedPrimitive > + drawBitmap( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XBitmap >& xBitmap, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState ); + css::uno::Reference< css::rendering::XCachedPrimitive > + drawBitmapModulated( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XBitmap >& xBitmap, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState ); + // cast away const, need to change refcount (as this is + // ~invisible to client code, still logically const) + css::uno::Reference< css::rendering::XGraphicDevice > + getDevice() { return css::uno::Reference< css::rendering::XGraphicDevice >(mpDevice); } + + + // BitmapCanvasHelper functionality + // ================================ + + css::geometry::IntegerSize2D getSize(); + + css::uno::Reference< css::rendering::XBitmap > + getScaledBitmap( const css::geometry::RealSize2D& newSize, + bool beFast ); + + css::uno::Sequence< sal_Int8 > + getData( css::rendering::IntegerBitmapLayout& bitmapLayout, + const css::geometry::IntegerRectangle2D& rect ); + + css::uno::Sequence< sal_Int8 > + getPixel( css::rendering::IntegerBitmapLayout& bitmapLayout, + const css::geometry::IntegerPoint2D& pos ); + + css::rendering::IntegerBitmapLayout getMemoryLayout(); + + /// Repaint a cached bitmap + bool repaint( const GraphicObjectSharedPtr& rGrf, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + const ::Point& rPt, + const ::Size& rSz, + const GraphicAttr& rAttr ) const; + + /** Flush drawing queue. + + This only works for Window canvases, and ensures that all + pending render operations are flushed to the + driver/hardware. + */ + void flush() const; + + enum ColorType + { + LINE_COLOR, FILL_COLOR, TEXT_COLOR, IGNORE_COLOR + }; + + // returns alpha of color + int setupOutDevState( const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + ColorType eColorType ) const; + + bool hasAlpha() const { return mbHaveAlpha; } + + protected: + /** Phyical output device + + Deliberately not a refcounted reference, because of + potential circular references for spritecanvas. + */ + css::rendering::XGraphicDevice* mpDevice; + + /// Rendering to this outdev preserves its state + OutDevProviderSharedPtr mpProtectedOutDevProvider; + + /// Rendering to this outdev does not preserve its state + OutDevProviderSharedPtr mpOutDevProvider; + + /// Rendering to this outdev does not preserve its state + OutDevProviderSharedPtr mp2ndOutDevProvider; + + /// When true, content is able to represent alpha + bool mbHaveAlpha; + + private: + css::uno::Reference< css::rendering::XCachedPrimitive > + implDrawBitmap( const css::rendering::XCanvas* rCanvas, + const css::uno::Reference< + css::rendering::XBitmap >& xBitmap, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + bool bModulateColors ); + + bool setupTextOutput( ::Point& o_rOutPos, + const css::rendering::ViewState& viewState, + const css::rendering::RenderState& renderState, + const css::uno::Reference< css::rendering::XCanvasFont >& xFont ) const; + + }; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |