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emf+: emulate hatch with color blend

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Change-Id: I2ac8f790c79c269d4c1fa650e703c3645c567ca4
This commit is contained in:
Tomaž Vajngerl 2014-07-19 21:52:09 +02:00
parent cd3bffed33
commit f97c5397f0
1 changed files with 115 additions and 1 deletions
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116
cppcanvas/source/mtfrenderer/emfplus.cxx
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@ -126,6 +126,63 @@ enum EmfPlusCombineMode
EmfPlusCombineModeComplement = 0x00000005
};
enum EmfPlusHatchStyle
{
HatchStyleHorizontal = 0x00000000,
HatchStyleVertical = 0x00000001,
HatchStyleForwardDiagonal = 0x00000002,
HatchStyleBackwardDiagonal = 0x00000003,
HatchStyleLargeGrid = 0x00000004,
HatchStyleDiagonalCross = 0x00000005,
HatchStyle05Percent = 0x00000006,
HatchStyle10Percent = 0x00000007,
HatchStyle20Percent = 0x00000008,
HatchStyle25Percent = 0x00000009,
HatchStyle30Percent = 0x0000000A,
HatchStyle40Percent = 0x0000000B,
HatchStyle50Percent = 0x0000000C,
HatchStyle60Percent = 0x0000000D,
HatchStyle70Percent = 0x0000000E,
HatchStyle75Percent = 0x0000000F,
HatchStyle80Percent = 0x00000010,
HatchStyle90Percent = 0x00000011,
HatchStyleLightDownwardDiagonal = 0x00000012,
HatchStyleLightUpwardDiagonal = 0x00000013,
HatchStyleDarkDownwardDiagonal = 0x00000014,
HatchStyleDarkUpwardDiagonal = 0x00000015,
HatchStyleWideDownwardDiagonal = 0x00000016,
HatchStyleWideUpwardDiagonal = 0x00000017,
HatchStyleLightVertical = 0x00000018,
HatchStyleLightHorizontal = 0x00000019,
HatchStyleNarrowVertical = 0x0000001A,
HatchStyleNarrowHorizontal = 0x0000001B,
HatchStyleDarkVertical = 0x0000001C,
HatchStyleDarkHorizontal = 0x0000001D,
HatchStyleDashedDownwardDiagonal = 0x0000001E,
HatchStyleDashedUpwardDiagonal = 0x0000001F,
HatchStyleDashedHorizontal = 0x00000020,
HatchStyleDashedVertical = 0x00000021,
HatchStyleSmallConfetti = 0x00000022,
HatchStyleLargeConfetti = 0x00000023,
HatchStyleZigZag = 0x00000024,
HatchStyleWave = 0x00000025,
HatchStyleDiagonalBrick = 0x00000026,
HatchStyleHorizontalBrick = 0x00000027,
HatchStyleWeave = 0x00000028,
HatchStylePlaid = 0x00000029,
HatchStyleDivot = 0x0000002A,
HatchStyleDottedGrid = 0x0000002B,
HatchStyleDottedDiamond = 0x0000002C,
HatchStyleShingle = 0x0000002D,
HatchStyleTrellis = 0x0000002E,
HatchStyleSphere = 0x0000002F,
HatchStyleSmallGrid = 0x00000030,
HatchStyleSmallCheckerBoard = 0x00000031,
HatchStyleLargeCheckerBoard = 0x00000032,
HatchStyleOutlinedDiamond = 0x00000033,
HatchStyleSolidDiamond = 0x00000034
};
const char* emfTypeToName(sal_uInt16 type)
{
switch(type)
@ -403,6 +460,7 @@ namespace cppcanvas
sal_Int32 surroundColorsNumber;
::Color* surroundColors;
EMFPPath *path;
EmfPlusHatchStyle hatchStyle;
public:
EMFPBrush ()
@ -423,6 +481,7 @@ namespace cppcanvas
, surroundColorsNumber(0)
, surroundColors(NULL)
, path(NULL)
, hatchStyle(HatchStyleHorizontal)
{
}
@ -470,7 +529,21 @@ namespace cppcanvas
s.ReadUInt32( color );
solidColor = ::Color (0xff - (color >> 24), (color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff);
SAL_INFO ("cppcanvas.emf", "EMF+\tsolid color: 0x" << std::hex << color << std::dec);
break;
}
case 1:
{
sal_uInt32 style;
sal_uInt32 foregroundColor;
sal_uInt32 backgroundColor;
s.ReadUInt32( style );
s.ReadUInt32( foregroundColor );
s.ReadUInt32( backgroundColor );
hatchStyle = static_cast<EmfPlusHatchStyle>(style);
solidColor = ::Color(0xff - (foregroundColor >> 24), (foregroundColor >> 16) & 0xff, (foregroundColor >> 8) & 0xff, foregroundColor & 0xff);
secondColor = ::Color(0xff - (backgroundColor >> 24), (backgroundColor >> 16) & 0xff, (backgroundColor >> 8) & 0xff, backgroundColor & 0xff);
SAL_INFO ("cppcanvas.emf", "EMF+\thatch style " << style << " foregroundcolor: 0x" << solidColor.AsRGBHexString() << " background 0x" << secondColor.AsRGBHexString());
break;
}
// path gradient
@ -1222,8 +1295,49 @@ namespace cppcanvas
rState.isFillColorSet = false;
rState.isLineColorSet = false;
if (brush->type == 3 || brush->type == 4) {
if (brush->type == 1)
{
// EMF+ like hatching is currently not supported. These are just color blends which serve as an approximation for some of them
// for the others the hatch "background" color (secondColor in brush) is used.
bool isHatchBlend = true;
double blendFactor = 0.0;
switch (brush->hatchStyle)
{
case HatchStyle05Percent: blendFactor = 0.05; break;
case HatchStyle10Percent: blendFactor = 0.10; break;
case HatchStyle20Percent: blendFactor = 0.20; break;
case HatchStyle25Percent: blendFactor = 0.25; break;
case HatchStyle30Percent: blendFactor = 0.30; break;
case HatchStyle40Percent: blendFactor = 0.40; break;
case HatchStyle50Percent: blendFactor = 0.50; break;
case HatchStyle60Percent: blendFactor = 0.60; break;
case HatchStyle70Percent: blendFactor = 0.70; break;
case HatchStyle75Percent: blendFactor = 0.75; break;
case HatchStyle80Percent: blendFactor = 0.80; break;
case HatchStyle90Percent: blendFactor = 0.90; break;
default:
isHatchBlend = false;
break;
}
rState.isFillColorSet = true;
rState.isLineColorSet = false;
::Color fillColor;
if (isHatchBlend)
{
fillColor = brush->solidColor;
fillColor.Merge(brush->secondColor, static_cast<sal_uInt8>(255 * blendFactor));
}
else
{
fillColor = brush->secondColor;
}
rState.fillColor = ::vcl::unotools::colorToDoubleSequence(fillColor, rCanvas->getUNOCanvas()->getDevice()->getDeviceColorSpace());
pPolyAction = ActionSharedPtr ( internal::PolyPolyActionFactory::createPolyPolyAction( localPolygon, rParms.mrCanvas, rState ) );
}
else if (brush->type == 3 || brush->type == 4)
{
if (brush->type == 3 && !(brush->additionalFlags & 0x1))
return; // we are unable to parse these brushes yet