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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/.
+ */
+
+#pragma once
+
+#include <com/sun/star/rendering/XCanvas.hpp>
+
+#include <o3tl/cow_wrapper.hxx>
+#include <vector>
+
+namespace oglcanvas
+{
+ class SpriteDeviceHelper;
+
+ /** Helper class for basic canvas functionality. */
+ class CanvasHelper
+ {
+ public:
+ CanvasHelper();
+
+ // outline because of incomplete type Action
+ ~CanvasHelper();
+ CanvasHelper& operator=( const CanvasHelper& );
+
+ /// 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
+
+ */
+ void init( css::rendering::XGraphicDevice& rDevice,
+ SpriteDeviceHelper& rDeviceHelper );
+
+ // CanvasHelper functionality
+ // ==========================
+
+ // XCanvas (only providing, not implementing the
+ // interface. Also note subtle method parameter differences)
+ void clear();
+ void drawLine( const css::rendering::XCanvas* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ 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* pCanvas,
+ const css::rendering::FontInfo& aFilter,
+ const css::uno::Sequence<
+ css::beans::PropertyValue >& aFontProperties );
+
+ css::uno::Reference< css::rendering::XCachedPrimitive >
+ drawText( const css::rendering::XCanvas* pCanvas,
+ 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* pCanvas,
+ const css::uno::Reference<
+ css::rendering::XTextLayout >& layoutetText,
+ const css::rendering::ViewState& viewState,
+ const css::rendering::RenderState& renderState );
+
+ css::uno::Reference< css::rendering::XCachedPrimitive >
+ drawBitmap( const css::rendering::XCanvas* pCanvas,
+ 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* pCanvas,
+ const css::uno::Reference<
+ css::rendering::XBitmap >& xBitmap,
+ const css::rendering::ViewState& viewState,
+ const css::rendering::RenderState& renderState );
+ css::uno::Reference< css::rendering::XGraphicDevice >
+ getDevice() { return css::uno::Reference< css::rendering::XGraphicDevice >(mpDevice); }
+
+ /** Write out recorded actions
+ */
+ bool renderRecordedActions() const;
+
+ /** Retrieve number of recorded actions
+ */
+ size_t getRecordedActionCount() const;
+
+ SpriteDeviceHelper* getDeviceHelper() const { return mpDeviceHelper; }
+ css::rendering::XGraphicDevice* getDevice() const { return mpDevice; }
+
+ struct Action;
+ typedef o3tl::cow_wrapper< std::vector<Action>,
+ o3tl::ThreadSafeRefCountingPolicy > RecordVectorT;
+
+ private:
+ CanvasHelper( const CanvasHelper& ) = delete;
+
+ void setupGraphicsState( Action& o_action,
+ const css::rendering::ViewState& viewState,
+ const css::rendering::RenderState& renderState );
+
+ /** Phyical output device
+
+ Deliberately not a refcounted reference, because of
+ potential circular references for spritecanvas.
+ */
+ css::rendering::XGraphicDevice* mpDevice;
+
+ /** Internal helper - used for a few global GL objects,
+ e.g. shader programs; and caches
+ */
+ SpriteDeviceHelper* mpDeviceHelper;
+
+ /** Ptr to array of recorded render calls
+
+ Gets shared copy-on-write, when this CanvasHelper is
+ copied (used e.g. for CanvasBitmap)
+ */
+ RecordVectorT mpRecordedActions;
+ };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */