cairo_canvasbitmap.hxx

Go to the documentation of this file.

/* -*- 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 <cppuhelper/compbase.hxx>
 
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/rendering/XBitmapCanvas.hpp>
#include <com/sun/star/rendering/XIntegerBitmap.hpp>
#include <com/sun/star/beans/XFastPropertySet.hpp>
#include <comphelper/uno3.hxx>
 
#include <base/bitmapcanvasbase.hxx>
#include <base/basemutexhelper.hxx>
#include <base/integerbitmapbase.hxx>
 
#include "cairo_canvashelper.hxx"
#include "cairo_repainttarget.hxx"
 
 
/* Definition of CanvasBitmap class */
 
namespace cairocanvas
{
    typedef ::cppu::WeakComponentImplHelper< css::rendering::XBitmapCanvas,
                                             css::rendering::XIntegerBitmap,
                                             css::lang::XServiceInfo,
                                             css::beans::XFastPropertySet >   CanvasBitmapBase_Base;
    class CanvasBitmapSpriteSurface_Base :
        public ::canvas::BaseMutexHelper<CanvasBitmapBase_Base>,
        public SurfaceProvider
    {
    };
 
    typedef ::canvas::IntegerBitmapBase<
        canvas::BitmapCanvasBase2<
            CanvasBitmapSpriteSurface_Base,
            CanvasHelper,
            ::osl::MutexGuard,
            ::cppu::OWeakObject> > CanvasBitmap_Base;
 
    class CanvasBitmap : public CanvasBitmap_Base,
                         public RepaintTarget
    {
    public:
        CanvasBitmap( const ::basegfx::B2ISize& rSize,
                      SurfaceProviderRef  rDevice,
                      css::rendering::XGraphicDevice* pDevice,
                      bool                      bHasAlpha );
 
        virtual void disposeThis() override;
 
        // Forwarding the XComponent implementation to the
        // cppu::ImplHelper templated base
        //                                    Classname     Base doing refcounting        Base implementing the XComponent interface
        //                                       |                 |                            |
        //                                       V                 V                            V
        DECLARE_UNO3_XCOMPONENT_AGG_DEFAULTS( CanvasBitmap, CanvasBitmapBase_Base, ::cppu::WeakComponentImplHelperBase )
 
        // XServiceInfo
        virtual OUString SAL_CALL getImplementationName(  ) override;
        virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
 
        // SurfaceProvider
        virtual ::cairo::SurfaceSharedPtr getSurface() override;
        virtual ::cairo::SurfaceSharedPtr createSurface( const ::basegfx::B2ISize& rSize, int aContent ) override;
        virtual ::cairo::SurfaceSharedPtr createSurface( ::Bitmap& rBitmap ) override;
        virtual ::cairo::SurfaceSharedPtr changeSurface() override;
        virtual OutputDevice* getOutputDevice() override;
 
        // RepaintTarget
        virtual bool repaint( const ::cairo::SurfaceSharedPtr&                pSurface,
                              const css::rendering::ViewState&   viewState,
                              const css::rendering::RenderState& renderState ) override;
 
        // XFastPropertySet
        // used to retrieve BitmapEx pointer or X Pixmap handles for this bitmap
        // handle values have these meanings:
        // 0 ... get pointer to BitmapEx
        // 1 ... get X pixmap handle to rgb content
        // 2 ... FIXME: leftover? ever called with this? always returns nothing (empty Any)
        // returned any contains either BitmapEx pointer or array of two Any value
        //     1st a bool value: true - free the pixmap after used by XFreePixmap, false do nothing, the pixmap is used internally in the canvas
        //     2nd the pixmap handle (sal_Int64)
        virtual css::uno::Any SAL_CALL getFastPropertyValue(sal_Int32 nHandle) override;
        virtual void SAL_CALL setFastPropertyValue(sal_Int32, const css::uno::Any&) override {}
 
    private:
        SurfaceProviderRef        mpSurfaceProvider;
        ::cairo::SurfaceSharedPtr mpBufferSurface;
        ::cairo::CairoSharedPtr   mpBufferCairo;
 
        const ::basegfx::B2ISize  maSize;
        const bool                mbHasAlpha;
    };
}
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */