xref: /aoo42x/main/drawinglayer/source/primitive2d/mediaprimitive2d.cxx (revision 464702f4)

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * to you under the Apache License, Version 2.0 (the
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_drawinglayer.hxx"

#include <drawinglayer/primitive2d/mediaprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
#include <avmedia/mediawindow.hxx>
#include <svtools/grfmgr.hxx>
#include <drawinglayer/primitive2d/graphicprimitive2d.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
	namespace primitive2d
	{
		Primitive2DSequence MediaPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
		{
			Primitive2DSequence xRetval(1);

			// create background object
			basegfx::B2DPolygon aBackgroundPolygon(basegfx::tools::createUnitPolygon());
			aBackgroundPolygon.transform(getTransform());
			const Primitive2DReference xRefBackground(
				new PolyPolygonColorPrimitive2D(
					basegfx::B2DPolyPolygon(aBackgroundPolygon),
					getBackgroundColor()));
			xRetval[0] = xRefBackground;

			// try to get graphic snapshot
			const Graphic aGraphic(avmedia::MediaWindow::grabFrame(getURL(), true));

			if(GRAPHIC_BITMAP == aGraphic.GetType() || GRAPHIC_GDIMETAFILE == aGraphic.GetType())
			{
				const GraphicObject aGraphicObject(aGraphic);
				const GraphicAttr aGraphicAttr;
				xRetval.realloc(2);
				xRetval[0] = xRefBackground;
				xRetval[1] = Primitive2DReference(new GraphicPrimitive2D(getTransform(), aGraphicObject, aGraphicAttr));
			}

			if(getDiscreteBorder())
			{
				const basegfx::B2DVector aDiscreteInLogic(rViewInformation.getInverseObjectToViewTransformation() *
                    basegfx::B2DVector((double)getDiscreteBorder(), (double)getDiscreteBorder()));
				const double fDiscreteSize(aDiscreteInLogic.getX() + aDiscreteInLogic.getY());

				basegfx::B2DRange aSourceRange(0.0, 0.0, 1.0, 1.0);
				aSourceRange.transform(getTransform());

				basegfx::B2DRange aDestRange(aSourceRange);
				aDestRange.grow(-0.5 * fDiscreteSize);

				if(basegfx::fTools::equalZero(aDestRange.getWidth()) || basegfx::fTools::equalZero(aDestRange.getHeight()))
				{
					// shrunk primitive has no content (zero size in X or Y), nothing to display. Still create
					// invisible content for HitTest and BoundRect
					const Primitive2DReference xHiddenLines(new HiddenGeometryPrimitive2D(xRetval));

					xRetval = Primitive2DSequence(&xHiddenLines, 1);
				}
				else
				{
					// create transformation matrix from original range to shrunk range
					basegfx::B2DHomMatrix aTransform;
					aTransform.translate(-aSourceRange.getMinX(), -aSourceRange.getMinY());
					aTransform.scale(aDestRange.getWidth() / aSourceRange.getWidth(), aDestRange.getHeight() / aSourceRange.getHeight());
					aTransform.translate(aDestRange.getMinX(), aDestRange.getMinY());

					// add transform primitive
					const Primitive2DReference aScaled(new TransformPrimitive2D(aTransform, xRetval));
					xRetval = Primitive2DSequence(&aScaled, 1L);
				}
			}

			return xRetval;
		}

		MediaPrimitive2D::MediaPrimitive2D(
			const basegfx::B2DHomMatrix& rTransform,
			const rtl::OUString& rURL,
			const basegfx::BColor& rBackgroundColor,
			sal_uInt32 nDiscreteBorder)
		:	BufferedDecompositionPrimitive2D(),
			maTransform(rTransform),
			maURL(rURL),
			maBackgroundColor(rBackgroundColor),
			mnDiscreteBorder(nDiscreteBorder)
		{
		}

		bool MediaPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
		{
			if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
			{
				const MediaPrimitive2D& rCompare = (MediaPrimitive2D&)rPrimitive;

				return (getTransform() == rCompare.getTransform()
					&& getURL() == rCompare.getURL()
					&& getBackgroundColor() == rCompare.getBackgroundColor()
					&& getDiscreteBorder() == rCompare.getDiscreteBorder());
			}

			return false;
		}

		basegfx::B2DRange MediaPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
		{
			basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
			aRetval.transform(getTransform());

			if(getDiscreteBorder())
			{
				const basegfx::B2DVector aDiscreteInLogic(rViewInformation.getInverseObjectToViewTransformation() *
                    basegfx::B2DVector((double)getDiscreteBorder(), (double)getDiscreteBorder()));
				const double fDiscreteSize(aDiscreteInLogic.getX() + aDiscreteInLogic.getY());

				aRetval.grow(-0.5 * fDiscreteSize);
			}

			return aRetval;
		}

		// provide unique ID
		ImplPrimitrive2DIDBlock(MediaPrimitive2D, PRIMITIVE2D_ID_MEDIAPRIMITIVE2D)

	} // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////
// eof