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EMF+: Render custom line cap data.

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Change-Id: Ic5e2e2d105fb006503b63e4e162d4dc09dab9e68
This commit is contained in:
Jan Holesovsky
2013-11-25 21:35:26 +01:00
parent 983e033273
commit ff98a070eb
2 changed files with 107 additions and 30 deletions
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7
cppcanvas/source/inc/implrenderer.hxx
View File

@@ -280,6 +280,13 @@ static float GetSwapFloat( SvStream& rSt )
/* EMF+ */
void processEMFPlus( MetaCommentAction* pAct, const ActionFactoryParameters& rFactoryParms, OutDevState& rState, const CanvasSharedPtr& rCanvas );
double setFont( sal_uInt8 objectId, const ActionFactoryParameters& rParms, OutDevState& rState );
/// Render LineCap, like the start or end arrow of a polygon.
void EMFPPlusDrawLineCap(const ::basegfx::B2DPolygon& rPolygon, double fPolyLength,
const ::basegfx::B2DPolyPolygon& rLineCap, bool bStart,
const com::sun::star::rendering::StrokeAttributes& rAttributes,
const ActionFactoryParameters& rParms, OutDevState& rState);
void EMFPPlusDrawPolygon (const ::basegfx::B2DPolyPolygon& polygon, const ActionFactoryParameters& rParms, OutDevState& rState, const CanvasSharedPtr& rCanvas, sal_uInt32 penIndex);
void EMFPPlusFillPolygon (::basegfx::B2DPolyPolygon& polygon, const ActionFactoryParameters& rParms, OutDevState& rState, const CanvasSharedPtr& rCanvas, bool isColor, sal_uInt32 brushIndexOrColor);

130
cppcanvas/source/mtfrenderer/emfplus.cxx
View File

@@ -597,6 +597,7 @@ namespace cppcanvas
struct EMFPCustomLineCap : public EMFPObject
{
sal_uInt32 type;
basegfx::B2DPolyPolygon polygon;
public:
EMFPCustomLineCap() : EMFPObject()
@@ -607,6 +608,33 @@ namespace cppcanvas
{
}
void ReadPath(SvStream& s, ImplRenderer& rR, bool bClosed)
{
sal_Int32 pathLength;
s >> pathLength;
SAL_INFO("cppcanvas.emf", "EMF+\t\tpath length: " << pathLength);
sal_uInt32 pathHeader;
sal_Int32 pathPoints, pathFlags;
s >> pathHeader >> pathPoints >> pathFlags;
SAL_INFO("cppcanvas.emf", "EMF+\t\tpath (custom cap line path)");
SAL_INFO("cppcanvas.emf", "EMF+\t\theader: 0x" << std::hex << pathHeader << " points: " << std::dec << pathPoints << " additional flags: 0x" << std::hex << pathFlags << std::dec );
EMFPPath path(pathPoints);
path.Read(s, pathFlags, rR);
polygon = path.GetPolygon(rR, false);
polygon.setClosed(bClosed);
// transformation to convert the path to what LibreOffice
// expects
B2DHomMatrix aMatrix;
aMatrix.scale(1.0, -1.0);
polygon.transform(aMatrix);
};
void Read (SvStream& s, ImplRenderer& rR)
{
sal_uInt32 header;
@@ -618,9 +646,10 @@ namespace cppcanvas
if (type == EmfPlusCustomLineCapDataTypeDefault)
{
sal_Int32 customLineCapDataFlags, baseCap, baseInset;
sal_Int32 strokeStartCap, strokeEndCap, strokeJoin;
sal_Int32 strokeMiterLimit, widthScale;
sal_uInt32 customLineCapDataFlags, baseCap;
float baseInset;
sal_uInt32 strokeStartCap, strokeEndCap, strokeJoin;
float strokeMiterLimit, widthScale;
float fillHotSpotX, fillHotSpotY, strokeHotSpotX, strokeHotSpotY;
s >> customLineCapDataFlags >> baseCap >> baseInset
@@ -628,40 +657,23 @@ namespace cppcanvas
>> strokeMiterLimit >> widthScale
>> fillHotSpotX >> fillHotSpotY >> strokeHotSpotX >> strokeHotSpotY;
SAL_INFO("cppcanvas.emf", "EMF+\t\tcustomLinCapDataFlags: 0x" << std::hex << customLineCapDataFlags);
SAL_INFO("cppcanvas.emf", "EMF+\t\tcustomLineCapDataFlags: 0x" << std::hex << customLineCapDataFlags);
SAL_INFO("cppcanvas.emf", "EMF+\t\tbaseCap: 0x" << std::hex << baseCap);
SAL_INFO("cppcanvas.emf", "EMF+\t\tbaseInset: " << baseInset);
SAL_INFO("cppcanvas.emf", "EMF+\t\tstrokeStartCap: 0x" << std::hex << strokeStartCap);
SAL_INFO("cppcanvas.emf", "EMF+\t\tstrokeEndCap: 0x" << std::hex << strokeEndCap);
SAL_INFO("cppcanvas.emf", "EMF+\t\tstrokeJoin: 0x" << std::hex << strokeJoin);
SAL_INFO("cppcanvas.emf", "EMF+\t\tstrokeMiterLimit: " << strokeMiterLimit);
SAL_INFO("cppcanvas.emf", "EMF+\t\twidthScale: " << widthScale);
if (customLineCapDataFlags & EmfPlusCustomLineCapDataFillPath)
{
sal_Int32 pathLength;
s >> pathLength;
SAL_INFO("cppcanvas.emf", "EMF+\t\tpath length: " << pathLength);
sal_uInt32 pathHeader;
sal_Int32 pathPoints, pathFlags;
s >> pathHeader >> pathPoints >> pathFlags;
SAL_INFO("cppcanvas.emf", "EMF+\t\tpath (custom cap fill path)");
SAL_INFO("cppcanvas.emf", "EMF+\t\theader: 0x" << std::hex << pathHeader << " points: " << std::dec << pathPoints << " additional flags: 0x" << std::hex << pathFlags << std::dec );
EMFPPath path(pathPoints);
path.Read(s, pathFlags, rR);
ReadPath(s, rR, true);
}
if (customLineCapDataFlags & EmfPlusCustomLineCapDataLinePath)
{
sal_Int32 pathLength;
s >> pathLength;
SAL_INFO("cppcanvas.emf", "EMF+\t\tpath length: " << pathLength);
sal_uInt32 pathHeader;
sal_Int32 pathPoints, pathFlags;
s >> pathHeader >> pathPoints >> pathFlags;
SAL_INFO("cppcanvas.emf", "EMF+\t\tpath (custom cap line path)");
SAL_INFO("cppcanvas.emf", "EMF+\t\theader: 0x" << std::hex << pathHeader << " points: " << std::dec << pathPoints << " additional flags: 0x" << std::hex << pathFlags << std::dec );
EMFPPath path(pathPoints);
path.Read(s, pathFlags, rR);
ReadPath(s, rR, false);
}
}
else if (type == EmfPlusCustomLineCapDataTypeAdjustableArrow)
@@ -1264,6 +1276,38 @@ namespace cppcanvas
}
}
void ImplRenderer::EMFPPlusDrawLineCap(const ::basegfx::B2DPolygon& rPolygon, double fPolyLength,
const ::basegfx::B2DPolyPolygon& rLineCap, bool bStart, const rendering::StrokeAttributes& rAttributes,
const ActionFactoryParameters& rParms, OutDevState& rState)
{
if (!rLineCap.count())
return;
// it seems the line caps in EMF+ are 4*larger than what
// LibreOffice expects, and the mapping in
// createAreaGeometryForLineStartEnd scales that down, so
// correct it
// [unfortunately found no proof for this in the spec :-( - please
// feel free to correct this if it causes trouble]
double fWidth = rAttributes.StrokeWidth*4;
basegfx::B2DPolyPolygon aArrow(basegfx::tools::createAreaGeometryForLineStartEnd(
rPolygon, rLineCap, bStart,
fWidth, fPolyLength, 0.0, NULL));
// createAreaGeometryForLineStartEnd from some reason always sets
// the path as closed, correct it
aArrow.setClosed(rLineCap.isClosed());
ActionSharedPtr pAction(internal::PolyPolyActionFactory::createPolyPolyAction(aArrow, rParms.mrCanvas, rState, rAttributes));
if (pAction)
{
maActions.push_back(MtfAction(pAction, rParms.mrCurrActionIndex));
rParms.mrCurrActionIndex += pAction->getActionCount()-1;
}
}
void ImplRenderer::EMFPPlusDrawPolygon (const ::basegfx::B2DPolyPolygon& polygon, const ActionFactoryParameters& rParms,
OutDevState& rState, const CanvasSharedPtr& rCanvas, sal_uInt32 penIndex)
{
@@ -1298,6 +1342,32 @@ namespace cppcanvas
maActions.push_back(MtfAction(pPolyAction, rParms.mrCurrActionIndex));
rParms.mrCurrActionIndex += pPolyAction->getActionCount()-1;
}
// render line starts & ends
if (pen->customStartCap || pen->customEndCap)
{
for (sal_uInt32 i = 0; i < aPolyPolygon.count(); ++i)
{
// break the polypolygon into polygons
basegfx::B2DPolygon aPolygon(aPolyPolygon.getB2DPolygon(i));
if (aPolygon.isClosed())
continue;
double fPolyLength = basegfx::tools::getLength(aPolygon);
// line start
if (pen->customStartCap)
EMFPPlusDrawLineCap(aPolygon, fPolyLength, pen->customStartCap->polygon,
true, aCommonAttributes, rParms, rState);
// line end
if (pen->customEndCap)
EMFPPlusDrawLineCap(aPolygon, fPolyLength, pen->customEndCap->polygon,
false, aCommonAttributes, rParms, rState);
}
}
}
}