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| -rw-r--r-- | slideshow/source/inc/animatedsprite.hxx | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/slideshow/source/inc/animatedsprite.hxx b/slideshow/source/inc/animatedsprite.hxx new file mode 100644 index 000000000..18d4eecb2 --- /dev/null +++ b/slideshow/source/inc/animatedsprite.hxx @@ -0,0 +1,158 @@ +/* -*- 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 . + */ + +#ifndef INCLUDED_SLIDESHOW_SOURCE_INC_ANIMATEDSPRITE_HXX +#define INCLUDED_SLIDESHOW_SOURCE_INC_ANIMATEDSPRITE_HXX + +#include <basegfx/matrix/b2dhommatrix.hxx> +#include <basegfx/point/b2dpoint.hxx> +#include <basegfx/polygon/b2dpolypolygon.hxx> + +#include "viewlayer.hxx" + +#include <optional> +#include <memory> + + +/* Definition of AnimatedSprite class */ + +namespace slideshow::internal + { + /** This class provides the sprite for animated shapes. + + Besides encapsulating the Canvas sprite for animated + shapes, this class also handles dynamic sprite resizing + and all the gory details of offset calculations and + rounding prevention. + */ + class AnimatedSprite + { + public: + /** Create a new AnimatedSprite, for the given metafile + shape. + + @param rViewLayer + The destination view layer, on which the animation should appear + + @param rSpriteSizePixel + The overall size of the sprite in device coordinate + space, sufficient to display all transformations, + shape changes and clips. + + @param nSpritePrio + Priority of the sprite. Must remain static over the + lifetime of this object + */ + AnimatedSprite( const ViewLayerSharedPtr& rViewLayer, + const ::basegfx::B2DSize& rSpriteSizePixel, + double nSpritePrio ); + AnimatedSprite(const AnimatedSprite&) = delete; + AnimatedSprite& operator=(const AnimatedSprite&) = delete; + + /** Resize the sprite. + + @param rSpriteSizePixel + The new size in pixel + */ + void resize( const ::basegfx::B2DSize& rSpriteSizePixel ); + + /** Set an offset for the content output in pixel + + This method offsets the output on the sprite content + canvas by the specified amount of device pixel (for + subsequent render operations). + */ + void setPixelOffset( const ::basegfx::B2DSize& rPixelOffset ); + + /// Show the sprite + void show(); + + /// Hide the sprite + void hide(); + + /** Query the content canvas for the current sprite. + + Note that this method must be called + <em>every time</em> something is rendered to the + sprite, because XCustomSprite does not guarantee the + validity of the canvas after a render operation. + + Furthermore, the view transformation on the returned + canvas is already correctly setup, matching the + associated destination canvas. + */ + ::cppcanvas::CanvasSharedPtr getContentCanvas() const; + + /** Move the sprite in device pixel space. + + If the sprite is not yet created, this method has no + effect. + */ + void movePixel( const ::basegfx::B2DPoint& rNewPos ); + + /** Set the alpha value of the sprite. + + If the sprite is not yet created, this method has no + effect. + */ + void setAlpha( double rAlpha ); + + /** Set a sprite clip in user coordinate space. + + If the sprite is not yet created, this method has no + effect. + */ + void clip( const ::basegfx::B2DPolyPolygon& rClip ); + + /** Clears a sprite clip + + If the sprite is not yet created, this method has no + effect. + */ + void clip(); + + /** Set a sprite transformation. + + If the sprite is not yet created, this method has no + effect. + */ + void transform( const ::basegfx::B2DHomMatrix& rTransform ); + + private: + ViewLayerSharedPtr mpViewLayer; + + ::cppcanvas::CustomSpriteSharedPtr mpSprite; + ::basegfx::B2DSize maEffectiveSpriteSizePixel; + ::basegfx::B2DSize maContentPixelOffset; + + double mnSpritePrio; + double mnAlpha; + ::std::optional< ::basegfx::B2DPoint > maPosPixel; + ::std::optional< ::basegfx::B2DPolyPolygon > maClip; + + bool mbSpriteVisible; + }; + + typedef ::std::shared_ptr< AnimatedSprite > AnimatedSpriteSharedPtr; + +} + +#endif // INCLUDED_SLIDESHOW_SOURCE_INC_ANIMATEDSPRITE_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |