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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 .
*/
#ifndef INCLUDED_CANVAS_SOURCE_VCL_CANVASHELPER_HXX
#define INCLUDED_CANVAS_SOURCE_VCL_CANVASHELPER_HXX
#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 transparency 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;
};
}
#endif // INCLUDED_CANVAS_SOURCE_VCL_CANVASHELPER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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