xprimitive2drenderer.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <sal/config.h>
 
#include <com/sun/star/graphic/XPrimitive2DRenderer.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <cppuhelper/implbase2.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/canvastools.hxx>
#include <com/sun/star/geometry/RealRectangle2D.hpp>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
 
#include <drawinglayer/converters.hxx>
#include <comphelper/sequenceashashmap.hxx>
 
using namespace ::com::sun::star;
 
 
namespace drawinglayer::unorenderer
{
        namespace {
 
        class XPrimitive2DRenderer:
            public cppu::WeakAggImplHelper2<
                css::graphic::XPrimitive2DRenderer, css::lang::XServiceInfo>
        {
        public:
            XPrimitive2DRenderer();
 
            XPrimitive2DRenderer(const XPrimitive2DRenderer&) = delete;
            const XPrimitive2DRenderer& operator=(const XPrimitive2DRenderer&) = delete;
 
            // XPrimitive2DRenderer
            virtual uno::Reference< rendering::XBitmap > SAL_CALL rasterize(
                const uno::Sequence< uno::Reference< graphic::XPrimitive2D > >& Primitive2DSequence,
                const uno::Sequence< beans::PropertyValue >& aViewInformationSequence,
                ::sal_uInt32 DPI_X,
                ::sal_uInt32 DPI_Y,
                const css::geometry::RealRectangle2D& Range,
                ::sal_uInt32 MaximumQuadraticPixels) override;
 
            // XServiceInfo
            virtual OUString SAL_CALL getImplementationName() override;
            virtual sal_Bool SAL_CALL supportsService(const OUString&) override;
            virtual uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
        };
 
        }
 
        XPrimitive2DRenderer::XPrimitive2DRenderer()
        {
        }
 
        uno::Reference< rendering::XBitmap > XPrimitive2DRenderer::rasterize(
            const uno::Sequence< uno::Reference< graphic::XPrimitive2D > >& aPrimitive2DSequence,
            const uno::Sequence< beans::PropertyValue >& aViewInformationSequence,
            ::sal_uInt32 DPI_X,
            ::sal_uInt32 DPI_Y,
            const css::geometry::RealRectangle2D& Range,
            ::sal_uInt32 MaximumQuadraticPixels)
        {
            o3tl::Length eRangeUnit = o3tl::Length::mm100;
            comphelper::SequenceAsHashMap aViewInformationMap(aViewInformationSequence);
            auto it = aViewInformationMap.find("RangeUnit");
            if (it != aViewInformationMap.end())
            {
                sal_Int32 nVal{};
                it->second >>= nVal;
                eRangeUnit = static_cast<o3tl::Length>(nVal);
            }
 
            uno::Reference< rendering::XBitmap > XBitmap;
 
            if(aPrimitive2DSequence.hasElements())
            {
                const basegfx::B2DRange aRange(Range.X1, Range.Y1, Range.X2, Range.Y2);
                const double fWidth(aRange.getWidth());
                const double fHeight(aRange.getHeight());
 
                if(basegfx::fTools::more(fWidth, 0.0) && basegfx::fTools::more(fHeight, 0.0))
                {
                    if(0 == DPI_X)
                    {
                        DPI_X = 75;
                    }
 
                    if(0 == DPI_Y)
                    {
                        DPI_Y = 75;
                    }
 
                    if(0 == MaximumQuadraticPixels)
                    {
                        MaximumQuadraticPixels = 500000;
                    }
 
                    auto aViewInformation2D = geometry::createViewInformation2D(aViewInformationSequence);
 
                    if(aViewInformation2D.getViewport().isEmpty())
                    {
                        // we have a Viewport since we create a discrete pixel device, use it
                        // if none is given
                        aViewInformation2D.setViewport(aRange);
                    }
 
                    const sal_uInt32 nDiscreteWidth(basegfx::fround(o3tl::convert(fWidth, eRangeUnit, o3tl::Length::in) * DPI_X));
                    const sal_uInt32 nDiscreteHeight(basegfx::fround(o3tl::convert(fHeight, eRangeUnit, o3tl::Length::in) * DPI_Y));
 
                    basegfx::B2DHomMatrix aEmbedding(
                        basegfx::utils::createTranslateB2DHomMatrix(
                            -aRange.getMinX(),
                            -aRange.getMinY()));
 
                    aEmbedding.scale(
                        nDiscreteWidth / fWidth,
                        nDiscreteHeight / fHeight);
 
                    const primitive2d::Primitive2DReference xEmbedRef(
                        new primitive2d::TransformPrimitive2D(
                            aEmbedding,
                            aPrimitive2DSequence));
                    primitive2d::Primitive2DContainer xEmbedSeq { xEmbedRef };
 
                    BitmapEx aBitmapEx(
                        convertToBitmapEx(
                            std::move(xEmbedSeq),
                            aViewInformation2D,
                            nDiscreteWidth,
                            nDiscreteHeight,
                            MaximumQuadraticPixels));
 
                    if(!aBitmapEx.IsEmpty())
                    {
                        aBitmapEx.SetPrefMapMode(MapMode(MapUnit::Map100thMM));
                        aBitmapEx.SetPrefSize(Size(basegfx::fround(fWidth), basegfx::fround(fHeight)));
                        XBitmap = vcl::unotools::xBitmapFromBitmapEx(aBitmapEx);
                    }
                }
            }
 
            return XBitmap;
        }
 
        OUString SAL_CALL XPrimitive2DRenderer::getImplementationName()
        {
            return "drawinglayer::unorenderer::XPrimitive2DRenderer";
        }
 
        sal_Bool SAL_CALL XPrimitive2DRenderer::supportsService(const OUString& rServiceName)
        {
            return cppu::supportsService(this, rServiceName);
        }
 
        uno::Sequence< OUString > SAL_CALL XPrimitive2DRenderer::getSupportedServiceNames()
        {
            return { "com.sun.star.graphic.Primitive2DTools" };
        }
 
} // end of namespace
 
 
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
drawinglayer_XPrimitive2DRenderer(
    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const& )
{
    return cppu::acquire(new drawinglayer::unorenderer::XPrimitive2DRenderer());
}
 
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