1 files changed, 140 insertions, 0 deletions
diff --git a/canvas/source/cairo/cairo_spritecanvashelper.hxx b/canvas/source/cairo/cairo_spritecanvashelper.hxx
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+++ b/canvas/source/cairo/cairo_spritecanvashelper.hxx
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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 <com/sun/star/rendering/XAnimatedSprite.hpp>
+#include <com/sun/star/rendering/XAnimation.hpp>
+#include <com/sun/star/rendering/XCustomSprite.hpp>
+
+#include <spriteredrawmanager.hxx>
+
+#include <vcl/cairo.hxx>
+#include "cairo_canvashelper.hxx"
+
+namespace basegfx
+{
+    class B2IRange;
+}
+
+namespace cairocanvas
+{
+    class SpriteCanvas;
+
+    class SpriteCanvasHelper : public CanvasHelper
+    {
+    public:
+        SpriteCanvasHelper();
+
+        void init( ::canvas::SpriteRedrawManager& rManager,
+                   SpriteCanvas&                  rOwningSpriteCanvas,
+                   const ::basegfx::B2ISize&      rSize );
+
+        /// Dispose all internal references
+        void disposing();
+
+        // XSpriteCanvas
+        css::uno::Reference< css::rendering::XAnimatedSprite >        createSpriteFromAnimation(
+                const css::uno::Reference< css::rendering::XAnimation >& animation );
+
+        css::uno::Reference< css::rendering::XAnimatedSprite >        createSpriteFromBitmaps(
+                const css::uno::Sequence<
+                      css::uno::Reference<
+                            css::rendering::XBitmap > >& animationBitmaps,
+                sal_Int8                                              interpolationMode );
+
+        css::uno::Reference< css::rendering::XCustomSprite >      createCustomSprite(
+                const css::geometry::RealSize2D& spriteSize );
+
+        css::uno::Reference< css::rendering::XSprite >                createClonedSprite(
+                const css::uno::Reference< css::rendering::XSprite >& original );
+
+        /** Actually perform the screen update
+
+            @param rCurrArea
+            Current window area in absolute screen coordinates
+
+            @param bUpdateAll
+            sal_True, if everything must be updated, not only changed
+            sprites
+
+            @param io_bSurfaceDirty
+            In/out parameter, whether backbuffer surface is dirty (if
+            yes, we're performing a full update, anyway)
+         */
+        bool updateScreen( const ::basegfx::B2IRange& rCurrArea,
+                           bool                       bUpdateAll,
+                           bool&                      io_bSurfaceDirty );
+
+
+        // SpriteRedrawManager functor calls
+
+
+        /** Gets called for simple background repaints
+         */
+        void backgroundPaint( const ::basegfx::B2DRange& rUpdateRect );
+
+        /** Gets called when area can be handled by scrolling.
+
+            Called method must copy screen content from rMoveStart to
+            rMoveEnd, and restore the background in the uncovered
+            areas.
+
+            @param rMoveStart
+            Source rect of the scroll
+
+            @param rMoveEnd
+            Dest rect of the scroll
+
+            @param rUpdateArea
+            All info necessary, should rMoveStart be partially or
+            fully outside the outdev
+         */
+        void scrollUpdate( const ::basegfx::B2DRange&                           rMoveStart,
+                           const ::basegfx::B2DRange&                           rMoveEnd,
+                           const ::canvas::SpriteRedrawManager::UpdateArea&     rUpdateArea );
+
+        void opaqueUpdate( const ::basegfx::B2DRange&                          rTotalArea,
+                           const std::vector< ::canvas::Sprite::Reference >& rSortedUpdateSprites );
+
+        void genericUpdate( const ::basegfx::B2DRange&                          rTotalArea,
+                            const std::vector< ::canvas::Sprite::Reference >& rSortedUpdateSprites );
+
+    private:
+        ::cairo::SurfaceSharedPtr const & getCompositingSurface( const ::basegfx::B2ISize& rNeededSize );
+        ::cairo::SurfaceSharedPtr const & getTemporarySurface();
+        ::cairo::SurfaceSharedPtr createSurface( const ::basegfx::B2ISize& rNeededSize ) const;
+
+        /// Set from the SpriteCanvas: instance coordinating sprite redraw
+        ::canvas::SpriteRedrawManager*  mpRedrawManager;
+
+        /// Set from the init method. used to generate sprites
+        SpriteCanvas*                   mpOwningSpriteCanvas;
+
+        /// a surface used to composite the frontbuffer image
+        ::cairo::SurfaceSharedPtr       mpCompositingSurface;
+        ::basegfx::B2ISize              maCompositingSurfaceSize;
+        bool                            mbCompositingSurfaceDirty;
+        /// a temporary surface that is guaranteed to be the same size
+        //as the compositing surface
+        ::cairo::SurfaceSharedPtr       mpTemporarySurface;
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */