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Diffstat (limited to 'canvas/source/vcl/canvascustomsprite.cxx')
| -rw-r--r-- | canvas/source/vcl/canvascustomsprite.cxx | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/canvas/source/vcl/canvascustomsprite.cxx b/canvas/source/vcl/canvascustomsprite.cxx new file mode 100644 index 000000000..9d1f83a74 --- /dev/null +++ b/canvas/source/vcl/canvascustomsprite.cxx @@ -0,0 +1,159 @@ +/* -*- 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 . + */ + + +#include <sal/config.h> + +#include <basegfx/point/b2dpoint.hxx> +#include <cppuhelper/supportsservice.hxx> +#include <tools/diagnose_ex.h> +#include <vcl/outdev.hxx> + +#include "canvascustomsprite.hxx" + +using namespace ::com::sun::star; + + +namespace vclcanvas +{ + + CanvasCustomSprite::CanvasCustomSprite( const geometry::RealSize2D& rSpriteSize, + rendering::XGraphicDevice& rDevice, + const ::canvas::SpriteSurface::Reference& rOwningSpriteCanvas, + const OutDevProviderSharedPtr& rOutDevProvider, + bool bShowSpriteBounds ) + { + ENSURE_OR_THROW( rOwningSpriteCanvas && + rOutDevProvider, + "CanvasCustomSprite::CanvasCustomSprite(): Invalid sprite canvas" ); + + // setup back buffer + + + const ::Size aSize( + static_cast<sal_Int32>( std::max( 1.0, + ceil( rSpriteSize.Width ))), // round up to nearest int, + // enforce sprite to have at + // least (1,1) pixel size + static_cast<sal_Int32>( std::max( 1.0, + ceil( rSpriteSize.Height ))) ); + + // create content backbuffer in screen depth + BackBufferSharedPtr pBackBuffer = std::make_shared<BackBuffer>( rOutDevProvider->getOutDev() ); + pBackBuffer->setSize( aSize ); + + // create mask backbuffer, with one bit color depth + BackBufferSharedPtr pBackBufferMask = std::make_shared<BackBuffer>( rOutDevProvider->getOutDev(), + true ); + pBackBufferMask->setSize( aSize ); + + // TODO(F1): Implement alpha vdev (could prolly enable + // antialiasing again, then) + + // disable font antialiasing (causes ugly shadows otherwise) + pBackBuffer->getOutDev().SetAntialiasing( AntialiasingFlags::DisableText ); + pBackBufferMask->getOutDev().SetAntialiasing( AntialiasingFlags::DisableText ); + + // set mask vdev drawmode, such that everything is painted + // black. That leaves us with a binary image, white for + // background, black for painted content + pBackBufferMask->getOutDev().SetDrawMode( DrawModeFlags::BlackLine | DrawModeFlags::BlackFill | DrawModeFlags::BlackText | + DrawModeFlags::BlackGradient | DrawModeFlags::BlackBitmap ); + + + // setup canvas helper + + + // always render into back buffer, don't preserve state (it's + // our private VDev, after all), have notion of alpha + maCanvasHelper.init( rDevice, + pBackBuffer, + false, + true ); + maCanvasHelper.setBackgroundOutDev( pBackBufferMask ); + + + // setup sprite helper + + + maSpriteHelper.init( rSpriteSize, + rOwningSpriteCanvas, + pBackBuffer, + pBackBufferMask, + bShowSpriteBounds ); + + // clear sprite to 100% transparent + maCanvasHelper.clear(); + } + + OUString SAL_CALL CanvasCustomSprite::getImplementationName() + { + return "VCLCanvas.CanvasCustomSprite"; + } + + sal_Bool SAL_CALL CanvasCustomSprite::supportsService( const OUString& ServiceName ) + { + return cppu::supportsService( this, ServiceName ); + } + + uno::Sequence< OUString > SAL_CALL CanvasCustomSprite::getSupportedServiceNames() + { + return { "com.sun.star.rendering.CanvasCustomSprite" }; + } + + // Sprite + void CanvasCustomSprite::redraw( OutputDevice& rOutDev, + bool bBufferedUpdate ) const + { + SolarMutexGuard aGuard; + + redraw( rOutDev, maSpriteHelper.getPosPixel(), bBufferedUpdate ); + } + + void CanvasCustomSprite::redraw( OutputDevice& rOutDev, + const ::basegfx::B2DPoint& rOrigOutputPos, + bool bBufferedUpdate ) const + { + SolarMutexGuard aGuard; + + maSpriteHelper.redraw( rOutDev, + rOrigOutputPos, + mbSurfaceDirty, + bBufferedUpdate ); + + mbSurfaceDirty = false; + } + + bool CanvasCustomSprite::repaint( const GraphicObjectSharedPtr& rGrf, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + const ::Point& rPt, + const ::Size& rSz, + const GraphicAttr& rAttr ) const + { + SolarMutexGuard aGuard; + + mbSurfaceDirty = true; + + return maCanvasHelper.repaint( rGrf, viewState, renderState, rPt, rSz, rAttr ); + } + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |