Quelle  dx_bitmapcanvashelper.hxx   Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once

#include <com/sun/star/rendering/XCanvas.hpp>
#include <com/sun/star/rendering/XBitmapCanvas.hpp>

#include <basegfx/vector/b2isize.hxx>
#include <basegfx/vector/b2dsize.hxx>

#include "dx_graphicsprovider.hxx"
#include "dx_ibitmap.hxx"
#include "dx_gdiplususer.hxx"
#include "dx_impltools.hxx"
#include "dx_canvashelper.hxx"


namespace dxcanvas
{
    /** Helper class for basic canvas functionality. Also offers
        optional backbuffer painting, when providing it with a second
        HDC to render into.
     */
    class BitmapCanvasHelper : public CanvasHelper
    {
    public:
        BitmapCanvasHelper();

        /// Release all references
        void disposing();

        /** Set the target for rendering operations

            @param rTarget
            Render target
         */
        void setTarget( const IBitmapSharedPtr& rTarget );

        /** Set the target for rendering operations

            @param rTarget
            Render target

            @param rOutputOffset
            Output offset in pixel
         */
        void setTarget( const IBitmapSharedPtr&   rTarget,
                        const ::basegfx::B2ISize& rOutputOffset );


        // CanvasHelper functionality is implementation-inherited. yuck.
        // =============================================================
        void clear();

        css::uno::Reference< css::rendering::XCachedPrimitive >
            drawTextLayout( const css::rendering::XCanvas*     pCanvas,
                            const css::uno::Reference<
                                css::rendering::XTextLayout >& laidOutText,
                            const css::rendering::ViewState&   viewState,
                            const css::rendering::RenderState& renderState );

        // BitmapCanvasHelper functionality
        // ================================

        void copyRect( const css::rendering::XCanvas*          pCanvas,
                       const css::uno::Reference<
                               css::rendering::XBitmapCanvas >&    sourceCanvas,
                       const css::geometry::RealRectangle2D&   sourceRect,
                       const css::rendering::ViewState&        sourceViewState,
                       const css::rendering::RenderState&      sourceRenderState,
                       const css::geometry::RealRectangle2D&   destRect,
                       const css::rendering::ViewState&        destViewState,
                       const css::rendering::RenderState&      destRenderState );

        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 );

        void setData( const css::uno::Sequence< sal_Int8 >&         data,
                      const css::rendering::IntegerBitmapLayout&    bitmapLayout,
                      const css::geometry::IntegerRectangle2D&      rect );

        void setPixel( const css::uno::Sequence< sal_Int8 >&        color,
                       const css::rendering::IntegerBitmapLayout&   bitmapLayout,
                       const css::geometry::IntegerPoint2D&         pos );

        css::uno::Sequence< sal_Int8 >
            getPixel( css::rendering::IntegerBitmapLayout& bitmapLayout,
                      const css::geometry::IntegerPoint2D& pos );

        css::uno::Reference< css::rendering::XBitmapPalette > getPalette();

        css::rendering::IntegerBitmapLayout getMemoryLayout();

        bool hasAlpha() const;

    protected:
        /// Render target
        IBitmapSharedPtr mpTarget;
    };
}

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