Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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: */