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Diffstat (limited to '')
| -rw-r--r-- | canvas/source/cairo/cairo_canvas.cxx | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/canvas/source/cairo/cairo_canvas.cxx b/canvas/source/cairo/cairo_canvas.cxx new file mode 100644 index 000000000..622213dee --- /dev/null +++ b/canvas/source/cairo/cairo_canvas.cxx @@ -0,0 +1,191 @@ +/* -*- 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 <sal/log.hxx> + +#include <com/sun/star/awt/Rectangle.hpp> +#include <com/sun/star/lang/NoSupportException.hpp> +#include <osl/mutex.hxx> +#include <tools/diagnose_ex.h> +#include <vcl/sysdata.hxx> +#include <vcl/skia/SkiaHelper.hxx> +#include <cppuhelper/supportsservice.hxx> + +#include "cairo_canvas.hxx" + +using namespace ::cairo; +using namespace ::com::sun::star; + +namespace cairocanvas +{ + Canvas::Canvas( const uno::Sequence< uno::Any >& aArguments, + const uno::Reference< uno::XComponentContext >& /*rxContext*/ ) : + maArguments(aArguments) + { + } + + void Canvas::initialize() + { + // #i64742# Only perform initialization when not in probe mode + if( !maArguments.hasElements() ) + return; + + assert( !SkiaHelper::isVCLSkiaEnabled() ); + + /* maArguments: + 0: ptr to creating instance (Window or VirtualDevice) + 1: current bounds of creating instance + 2: bool, denoting always on top state for Window (always false for VirtualDevice) + 3: XWindow for creating Window (or empty for VirtualDevice) + 4: SystemGraphicsData as a streamed Any + */ + SAL_INFO("canvas.cairo","Canvas created " << this); + + ENSURE_ARG_OR_THROW( maArguments.getLength() >= 5 && + maArguments[0].getValueTypeClass() == uno::TypeClass_HYPER && + maArguments[4].getValueTypeClass() == uno::TypeClass_SEQUENCE, + "Canvas::initialize: wrong number of arguments, or wrong types" ); + + // We expect a single Any here, containing a pointer to a valid + // VCL output device, on which to output (mostly needed for text) + sal_Int64 nPtr = 0; + maArguments[0] >>= nPtr; + OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr); + ENSURE_ARG_OR_THROW( pOutDev != nullptr, + "Canvas::initialize: invalid OutDev pointer" ); + + awt::Rectangle aBounds; + maArguments[1] >>= aBounds; + + uno::Sequence<sal_Int8> aSeq; + maArguments[4] >>= aSeq; + + const SystemGraphicsData* pSysData=reinterpret_cast<const SystemGraphicsData*>(aSeq.getConstArray()); + if( !pSysData || !pSysData->nSize ) + throw lang::NoSupportException( "Passed SystemGraphicsData invalid!" ); + + bool bHasCairo = pOutDev->SupportsCairo(); + ENSURE_ARG_OR_THROW(bHasCairo, "SpriteCanvas::SpriteCanvas: No Cairo capability"); + + // setup helper + maDeviceHelper.init( *this, *pOutDev ); + + maCanvasHelper.init( basegfx::B2ISize(aBounds.Width, aBounds.Height), *this, this ); + + // forward surface to render on to canvashelper + maCanvasHelper.setSurface( maDeviceHelper.getSurface(), false ); + + maArguments.realloc(0); + } + + Canvas::~Canvas() + { + SAL_INFO("canvas.cairo", "CairoCanvas destroyed" ); + } + + void Canvas::disposeThis() + { + ::osl::MutexGuard aGuard( m_aMutex ); + + // forward to parent + CanvasBaseT::disposeThis(); + } + + OUString SAL_CALL Canvas::getServiceName( ) + { + return "com.sun.star.rendering.Canvas.Cairo"; + } + + // XServiceInfo + sal_Bool Canvas::supportsService(const OUString& sServiceName) + { + return cppu::supportsService(this, sServiceName); + + } + OUString Canvas::getImplementationName() + { + return "com.sun.star.comp.rendering.Canvas.Cairo"; + } + css::uno::Sequence< OUString > Canvas::getSupportedServiceNames() + { + return { getServiceName() }; + } + + bool Canvas::repaint( const SurfaceSharedPtr& pSurface, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + return maCanvasHelper.repaint( pSurface, viewState, renderState ); + } + + SurfaceSharedPtr Canvas::getSurface() + { + return maDeviceHelper.getSurface(); + } + + SurfaceSharedPtr Canvas::createSurface( const ::basegfx::B2ISize& rSize, int aContent ) + { + return maDeviceHelper.createSurface( rSize, aContent ); + } + + SurfaceSharedPtr Canvas::createSurface( ::Bitmap& rBitmap ) + { + SurfaceSharedPtr pSurface; + + BitmapSystemData aData; + if( rBitmap.GetSystemData( aData ) ) { + const Size& rSize = rBitmap.GetSizePixel(); + + pSurface = maDeviceHelper.createSurface( aData, rSize ); + } + + return pSurface; + } + + SurfaceSharedPtr Canvas::changeSurface() + { + // non-modifiable surface here + return SurfaceSharedPtr(); + } + + OutputDevice* Canvas::getOutputDevice() + { + return maDeviceHelper.getOutputDevice(); + } +} + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface* +com_sun_star_comp_rendering_Canvas_Cairo_get_implementation( + css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& args) +{ + rtl::Reference<cairocanvas::Canvas> p = new cairocanvas::Canvas(args, context); + p->acquire(); + try { + p->initialize(); + } catch (css::uno::Exception&) { + p->dispose(); + p->release(); + throw; + } + return static_cast<cppu::OWeakObject*>(p.get()); +} + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |