libreoffice/drawinglayer/source/primitive2d/graphicprimitive2d.cxx

/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: graphicprimitive2d.cxx,v $
 *
 *  $Revision: 1.3 $
 *
 *  last change: $Author: aw $ $Date: 2008-05-27 14:11:20 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_drawinglayer.hxx"

#include <drawinglayer/primitive2d/graphicprimitive2d.hxx>
#include <drawinglayer/animation/animationtiming.hxx>
#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
#include <drawinglayer/primitive2d/animatedprimitive2d.hxx>
#include <drawinglayer/primitive2d/metafileprimitive2d.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>

//////////////////////////////////////////////////////////////////////////////
// helper class for animated graphics

#include <vcl/animate.hxx>
#include <vcl/graph.hxx>
#include <vcl/virdev.hxx>
#include <vcl/svapp.hxx>

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

namespace
{
    struct animationStep
    {
        BitmapEx                                maBitmapEx;
        sal_uInt32                              mnTime;
    };

    class animatedBitmapExPreparator
    {
        ::Animation                             maAnimation;
        ::std::vector< animationStep >          maSteps;

        sal_uInt32 generateStepTime(sal_uInt32 nIndex) const;

    public:
        animatedBitmapExPreparator(const Graphic& rGraphic);

        sal_uInt32 count() const { return maSteps.size(); }
        sal_uInt32 loopCount() const { return (sal_uInt32)maAnimation.GetLoopCount(); }
        sal_uInt32 stepTime(sal_uInt32 a) const { return maSteps[a].mnTime; }
        const BitmapEx& stepBitmapEx(sal_uInt32 a) const { return maSteps[a].maBitmapEx; }
    };

    sal_uInt32 animatedBitmapExPreparator::generateStepTime(sal_uInt32 nIndex) const
    {
        const AnimationBitmap& rAnimBitmap = maAnimation.Get(sal_uInt16(nIndex));
        sal_uInt32 nWaitTime(rAnimBitmap.nWait * 10);

        // #115934#
        // Take care of special value for MultiPage TIFFs. ATM these shall just
        // show their first page. Later we will offer some switching when object
        // is selected.
        if(ANIMATION_TIMEOUT_ON_CLICK == rAnimBitmap.nWait)
        {
            // ATM the huge value would block the timer, so
            // use a long time to show first page (whole day)
            nWaitTime = 100 * 60 * 60 * 24;
        }

        // Bad trap: There are animated gifs with no set WaitTime (!).
        // In that case use a default value.
        if(0L == nWaitTime)
        {
            nWaitTime = 100L;
        }

        return nWaitTime;
    }

    animatedBitmapExPreparator::animatedBitmapExPreparator(const Graphic& rGraphic)
    :   maAnimation(rGraphic.GetAnimation())
    {
        OSL_ENSURE(GRAPHIC_BITMAP == rGraphic.GetType() && rGraphic.IsAnimated(), "animatedBitmapExPreparator: graphic is not animated (!)");

        // #128539# secure access to Animation, looks like there exist animated GIFs out there
        // with a step count of zero
        if(maAnimation.Count())
        {
            VirtualDevice aVirtualDevice(*Application::GetDefaultDevice());
            VirtualDevice aVirtualDeviceMask(*Application::GetDefaultDevice(), 1L);

            // Prepare VirtualDevices and their states
            aVirtualDevice.EnableMapMode(sal_False);
            aVirtualDeviceMask.EnableMapMode(sal_False);
            aVirtualDevice.SetOutputSizePixel(maAnimation.GetDisplaySizePixel());
            aVirtualDeviceMask.SetOutputSizePixel(maAnimation.GetDisplaySizePixel());
            aVirtualDevice.Erase();
            aVirtualDeviceMask.Erase();

            for(sal_uInt16 a(0L); a < maAnimation.Count(); a++)
            {
                animationStep aNextStep;
                aNextStep.mnTime = generateStepTime(a);

                // prepare step
                const AnimationBitmap& rAnimBitmap = maAnimation.Get(sal_uInt16(a));

                switch(rAnimBitmap.eDisposal)
                {
                    case DISPOSE_NOT:
                    {
                        aVirtualDevice.DrawBitmapEx(rAnimBitmap.aPosPix, rAnimBitmap.aBmpEx);
                        Bitmap aMask = rAnimBitmap.aBmpEx.GetMask();

                        if(aMask.IsEmpty())
                        {
                            const Point aEmpty;
                            const Rectangle aRect(aEmpty, aVirtualDeviceMask.GetOutputSizePixel());
                            const Wallpaper aWallpaper(COL_BLACK);
                            aVirtualDeviceMask.DrawWallpaper(aRect, aWallpaper);
                        }
                        else
                        {
                            BitmapEx aExpandVisibilityMask = BitmapEx(aMask, aMask);
                            aVirtualDeviceMask.DrawBitmapEx(rAnimBitmap.aPosPix, aExpandVisibilityMask);
                        }

                        break;
                    }
                    case DISPOSE_BACK:
                    {
                        // #i70772# react on no mask, for primitives, too.
                        const Bitmap aMask(rAnimBitmap.aBmpEx.GetMask());
                        const Bitmap aContent(rAnimBitmap.aBmpEx.GetBitmap());

                        aVirtualDeviceMask.Erase();
                        aVirtualDevice.DrawBitmap(rAnimBitmap.aPosPix, aContent);

                        if(aMask.IsEmpty())
                        {
                            const Rectangle aRect(rAnimBitmap.aPosPix, aContent.GetSizePixel());
                            aVirtualDeviceMask.SetFillColor(COL_BLACK);
                            aVirtualDeviceMask.SetLineColor();
                            aVirtualDeviceMask.DrawRect(aRect);
                        }
                        else
                        {
                            aVirtualDeviceMask.DrawBitmap(rAnimBitmap.aPosPix, aMask);
                        }

                        break;
                    }
                    case DISPOSE_FULL:
                    {
                        aVirtualDevice.DrawBitmapEx(rAnimBitmap.aPosPix, rAnimBitmap.aBmpEx);
                        break;
                    }
                    case DISPOSE_PREVIOUS :
                    {
                        aVirtualDevice.DrawBitmapEx(rAnimBitmap.aPosPix, rAnimBitmap.aBmpEx);
                        aVirtualDeviceMask.DrawBitmap(rAnimBitmap.aPosPix, rAnimBitmap.aBmpEx.GetMask());
                        break;
                    }
                }

                // create BitmapEx
                Bitmap aMainBitmap = aVirtualDevice.GetBitmap(Point(), aVirtualDevice.GetOutputSizePixel());
                Bitmap aMaskBitmap = aVirtualDeviceMask.GetBitmap(Point(), aVirtualDeviceMask.GetOutputSizePixel());
                aNextStep.maBitmapEx = BitmapEx(aMainBitmap, aMaskBitmap);

                // add to vector
                maSteps.push_back(aNextStep);
            }
        }
    }
} // end of anonymous namespace

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

namespace drawinglayer
{
    namespace primitive2d
    {
        Primitive2DSequence GraphicPrimitive2D::createLocal2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
        {
            Primitive2DSequence aRetval;

            if(255L != getGraphicAttr().GetTransparency())
            {
                // get transformed graphic. Suppress rotation and cropping, only filtering is needed
                // here (and may be replaced later on). Cropping is handled below as mask primitive (if set)
                GraphicAttr aSuppressGraphicAttr(getGraphicAttr());
                aSuppressGraphicAttr.SetCrop(0L, 0L, 0L, 0L);
                aSuppressGraphicAttr.SetRotation(0);
                Graphic aTransformedGraphic(getGraphicObject().GetTransformedGraphic(&aSuppressGraphicAttr));
                Primitive2DReference xPrimitive;

                switch(aTransformedGraphic.GetType())
                {
                    case GRAPHIC_BITMAP :
                    {
                        if(aTransformedGraphic.IsAnimated())
                        {
                            // prepare animation data
                            animatedBitmapExPreparator aData(aTransformedGraphic);

                            if(aData.count())
                            {
                                // create sub-primitives for animated bitmap and the needed animation loop
                                animation::AnimationEntryLoop aAnimationLoop(aData.loopCount() ? aData.loopCount() : 0xffff);
                                Primitive2DSequence aBitmapPrimitives(aData.count());

                                for(sal_uInt32 a(0L); a < aData.count(); a++)
                                {
                                    animation::AnimationEntryFixed aTime((double)aData.stepTime(a), (double)a / (double)aData.count());
                                    aAnimationLoop.append(aTime);
                                    const Primitive2DReference xRef(new BitmapPrimitive2D(aData.stepBitmapEx(a), getTransform()));
                                    aBitmapPrimitives[a] = xRef;
                                }

                                // prepare animation list
                                animation::AnimationEntryList aAnimationList;
                                aAnimationList.append(aAnimationLoop);

                                // create and add animated switch primitive
                                xPrimitive = Primitive2DReference(new AnimatedSwitchPrimitive2D(aAnimationList, aBitmapPrimitives, false));
                            }
                        }
                        else
                        {
                            xPrimitive = Primitive2DReference(new BitmapPrimitive2D(aTransformedGraphic.GetBitmapEx(), getTransform()));
                        }

                        break;
                    }

                    case GRAPHIC_GDIMETAFILE :
                    {
                        xPrimitive = Primitive2DReference(new MetafilePrimitive2D(getTransform(), aTransformedGraphic.GetGDIMetaFile()));
                        break;
                    }

                    default:
                    {
                        // nothing to create
                        break;
                    }
                }

                if(xPrimitive.is())
                {
                    // check for cropping
                    if(getGraphicAttr().IsCropped())
                    {
                        // decompose to get current pos and size
                        basegfx::B2DVector aScale, aTranslate;
                        double fRotate, fShearX;
                        getTransform().decompose(aScale, aTranslate, fRotate, fShearX);

                        // create ranges. The current object range is just scale and translate
                        const basegfx::B2DRange aCurrent(aTranslate.getX(), aTranslate.getY(), aTranslate.getX() + aScale.getX(), aTranslate.getY() + aScale.getY());

                        // calculate scalings between real image size and logic object size. This
                        // is necessary since the crop values are relative to original bitmap size
                        double fFactorX(1.0);
                        double fFactorY(1.0);

                        {
                            const MapMode aMapMode100thmm(MAP_100TH_MM);
                            Size aBitmapSize(getGraphicObject().GetPrefSize());

                            // #i95968# better support PrefMapMode; special for MAP_PIXEL was missing
                            if(MAP_PIXEL == getGraphicObject().GetPrefMapMode().GetMapUnit())
                            {
                                aBitmapSize = Application::GetDefaultDevice()->PixelToLogic(aBitmapSize, aMapMode100thmm);
                            }
                            else
                            {
                                aBitmapSize = Application::GetDefaultDevice()->LogicToLogic(aBitmapSize, getGraphicObject().GetPrefMapMode(), aMapMode100thmm);
                            }

                            const double fDivX(aBitmapSize.Width() - getGraphicAttr().GetLeftCrop() - getGraphicAttr().GetRightCrop());
                            const double fDivY(aBitmapSize.Height() - getGraphicAttr().GetTopCrop() - getGraphicAttr().GetBottomCrop());

                            if(!basegfx::fTools::equalZero(fDivX))
                            {
                                fFactorX = aScale.getX() / fDivX;
                            }

                            if(!basegfx::fTools::equalZero(fDivY))
                            {
                                fFactorY = aScale.getY() / fDivY;
                            }
                        }

                        // Create cropped range, describes the bounds of the original graphic
                        basegfx::B2DRange aCropped;
                        aCropped.expand(aCurrent.getMinimum() - basegfx::B2DPoint(getGraphicAttr().GetLeftCrop() * fFactorX, getGraphicAttr().GetTopCrop() * fFactorY));
                        aCropped.expand(aCurrent.getMaximum() + basegfx::B2DPoint(getGraphicAttr().GetRightCrop() * fFactorX, getGraphicAttr().GetBottomCrop() * fFactorY));

                        if(aCropped.isEmpty())
                        {
                            // nothing to add since cropped bitmap is completely empty
                            // xPrimitive will not be used
                        }
                        else
                        {
                            // build new object transformation for transform primitive which contains xPrimitive
                            basegfx::B2DHomMatrix aNewObjectTransform(getTransform());
                            aNewObjectTransform.invert();
                            aNewObjectTransform.scale(aCropped.getWidth(), aCropped.getHeight());
                            aNewObjectTransform.translate(aCropped.getMinX() - aCurrent.getMinX(), aCropped.getMinY() - aCurrent.getMinY());
                            aNewObjectTransform.shearX(fShearX);
                            aNewObjectTransform.rotate(fRotate);
                            aNewObjectTransform.translate(aTranslate.getX(), aTranslate.getY());

                            // prepare TransformPrimitive2D with xPrimitive
                            const Primitive2DReference xTransformPrimitive(new TransformPrimitive2D(aNewObjectTransform, Primitive2DSequence(&xPrimitive, 1L)));

                            if(aCurrent.isInside(aCropped))
                            {
                                // cropped just got smaller, no need to really use a mask. Add to destination directly
                                appendPrimitive2DReferenceToPrimitive2DSequence(aRetval, xTransformPrimitive);
                            }
                            else
                            {
                                // cropped got bigger, mask it with original object's bounds
                                basegfx::B2DPolyPolygon aMaskPolyPolygon(basegfx::tools::createPolygonFromRect(basegfx::B2DRange(0.0, 0.0, 1.0, 1.0)));
                                aMaskPolyPolygon.transform(getTransform());

                                // create maskPrimitive with aMaskPolyPolygon and aMaskContentVector
                                const Primitive2DReference xRefB(new MaskPrimitive2D(aMaskPolyPolygon, Primitive2DSequence(&xTransformPrimitive, 1L)));
                                appendPrimitive2DReferenceToPrimitive2DSequence(aRetval, xRefB);
                            }
                        }
                    }
                    else
                    {
                        // add to decomposition
                        appendPrimitive2DReferenceToPrimitive2DSequence(aRetval, xPrimitive);
                    }
                }
            }

            return aRetval;
        }

        GraphicPrimitive2D::GraphicPrimitive2D(
            const basegfx::B2DHomMatrix& rTransform,
            const GraphicObject& rGraphicObject,
            const GraphicAttr& rGraphicAttr)
        :   BufDecPrimitive2D(),
            maTransform(rTransform),
            maGraphicObject(rGraphicObject),
            maGraphicAttr(rGraphicAttr)
        {
        }

        GraphicPrimitive2D::GraphicPrimitive2D(
            const basegfx::B2DHomMatrix& rTransform,
            const GraphicObject& rGraphicObject)
        :   BufDecPrimitive2D(),
            maTransform(rTransform),
            maGraphicObject(rGraphicObject),
            maGraphicAttr()
        {
        }

        bool GraphicPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
        {
            if(BufDecPrimitive2D::operator==(rPrimitive))
            {
                const GraphicPrimitive2D& rCompare = (GraphicPrimitive2D&)rPrimitive;

                return (getTransform() == rCompare.getTransform()
                    && getGraphicObject() == rCompare.getGraphicObject()
                    && getGraphicAttr() == rCompare.getGraphicAttr());
            }

            return false;
        }

        basegfx::B2DRange GraphicPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
        {
            basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
            aRetval.transform(getTransform());
            return aRetval;
        }

        // provide unique ID
        ImplPrimitrive2DIDBlock(GraphicPrimitive2D, PRIMITIVE2D_ID_GRAPHICPRIMITIVE2D)

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

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