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path: root/canvas/source/cairo/cairo_canvashelper.cxx
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Diffstat (limited to 'canvas/source/cairo/cairo_canvashelper.cxx')
-rw-r--r--canvas/source/cairo/cairo_canvashelper.cxx268
1 files changed, 184 insertions, 84 deletions
diff --git a/canvas/source/cairo/cairo_canvashelper.cxx b/canvas/source/cairo/cairo_canvashelper.cxx
index 9cf2dd978759..942e5edb06a6 100644
--- a/canvas/source/cairo/cairo_canvashelper.cxx
+++ b/canvas/source/cairo/cairo_canvashelper.cxx
@@ -56,6 +56,8 @@
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/tools/canvastools.hxx>
+#include <basegfx/tools/keystoplerp.hxx>
+#include <basegfx/tools/lerp.hxx>
#include <comphelper/sequence.hxx>
#include <cppuhelper/compbase1.hxx>
@@ -73,6 +75,7 @@
#include "cairo_canvashelper.hxx"
#include "cairo_canvasbitmap.hxx"
+#include <boost/tuple/tuple.hpp>
#include <algorithm>
using namespace ::cairo;
@@ -122,9 +125,29 @@ namespace cairocanvas
mpCairo = pSurface->getCairo();
}
+ static void setColor( Cairo* pCairo,
+ const uno::Sequence<double>& rColor )
+ {
+ if( rColor.getLength() > 3 )
+ {
+ const double alpha = rColor[3];
+
+ cairo_set_source_rgba( pCairo,
+ alpha*rColor[0],
+ alpha*rColor[1],
+ alpha*rColor[2],
+ alpha );
+ }
+ else if( rColor.getLength() == 3 )
+ cairo_set_source_rgb( pCairo,
+ rColor[0],
+ rColor[1],
+ rColor[2] );
+ }
+
void CanvasHelper::useStates( const rendering::ViewState& viewState,
const rendering::RenderState& renderState,
- bool setColor )
+ bool bSetColor )
{
Matrix aViewMatrix;
Matrix aRenderMatrix;
@@ -158,19 +181,8 @@ namespace cairocanvas
OSL_TRACE ("render clip END");
}
- if( setColor ) {
- if( renderState.DeviceColor.getLength() > 3 )
- cairo_set_source_rgba( mpCairo.get(),
- renderState.DeviceColor [0],
- renderState.DeviceColor [1],
- renderState.DeviceColor [2],
- renderState.DeviceColor [3] );
- else if (renderState.DeviceColor.getLength() == 3)
- cairo_set_source_rgb( mpCairo.get(),
- renderState.DeviceColor [0],
- renderState.DeviceColor [1],
- renderState.DeviceColor [2] );
- }
+ if( bSetColor )
+ setColor(mpCairo.get(),renderState.DeviceColor);
cairo_operator_t compositingMode( CAIRO_OPERATOR_OVER );
switch( renderState.CompositeOperation )
@@ -665,11 +677,33 @@ namespace cairocanvas
double alpha = rColor[3];
// cairo expects premultiplied alpha
cairo_pattern_add_color_stop_rgba( pPattern, stop, rColor[0]*alpha, rColor[1]*alpha, rColor[2]*alpha, alpha );
- //cairo_pattern_add_color_stop_rgba( pPattern, stop, rColor[0], rColor[1], rColor[2], alpha );
}
}
}
+ static uno::Sequence<double> lerp(const uno::Sequence<double>& rLeft, const uno::Sequence<double>& rRight, double fAlpha)
+ {
+ if( rLeft.getLength() == 3 )
+ {
+ uno::Sequence<double> aRes(3);
+ aRes[0] = basegfx::tools::lerp(rLeft[0],rRight[0],fAlpha);
+ aRes[1] = basegfx::tools::lerp(rLeft[1],rRight[1],fAlpha);
+ aRes[2] = basegfx::tools::lerp(rLeft[2],rRight[2],fAlpha);
+ return aRes;
+ }
+ else if( rLeft.getLength() == 4 )
+ {
+ uno::Sequence<double> aRes(4);
+ aRes[0] = basegfx::tools::lerp(rLeft[0],rRight[0],fAlpha);
+ aRes[1] = basegfx::tools::lerp(rLeft[1],rRight[1],fAlpha);
+ aRes[2] = basegfx::tools::lerp(rLeft[2],rRight[2],fAlpha);
+ aRes[3] = basegfx::tools::lerp(rLeft[3],rRight[3],fAlpha);
+ return aRes;
+ }
+
+ return uno::Sequence<double>();
+ }
+
static Pattern* patternFromParametricPolyPolygon( ::canvas::ParametricPolyPolygon& rPolygon )
{
Pattern* pPattern = NULL;
@@ -678,7 +712,6 @@ namespace cairocanvas
// undef macros from vclenum.hxx which conflicts with GradientType enum values
#undef GRADIENT_LINEAR
-#undef GRADIENT_AXIAL
#undef GRADIENT_ELLIPTICAL
switch( aValues.meType ) {
@@ -691,26 +724,17 @@ namespace cairocanvas
addColorStops( pPattern, aValues.maColors, aValues.maStops );
break;
- // FIXME: NYI
- case ::canvas::ParametricPolyPolygon::GRADIENT_RECTANGULAR:
- case ::canvas::ParametricPolyPolygon::GRADIENT_AXIAL:
- x0 = 0;
- y0 = 0;
- x1 = 1;
- y1 = 0;
- pPattern = cairo_pattern_create_linear( x0, y0, x1, y1 );
- addColorStops( pPattern, aValues.maColors, aValues.maStops );
- break;
-
case ::canvas::ParametricPolyPolygon::GRADIENT_ELLIPTICAL:
- cx = 0.5;
- cy = 0.5;
+ cx = 0;
+ cy = 0;
r0 = 0;
- r1 = 0.5;
+ r1 = 1;
- pPattern = cairo_pattern_create_radial( cx, cy, r0, cx, cy, r1 );
+ pPattern = cairo_pattern_create_radial( cx, cy, r0, cy, cy, r1 );
addColorStops( pPattern, aValues.maColors, aValues.maStops, true );
break;
+ default:
+ break;
}
return pPattern;
@@ -719,7 +743,8 @@ namespace cairocanvas
static void doOperation( Operation aOperation,
Cairo* pCairo,
const uno::Sequence< rendering::Texture >* pTextures,
- const SurfaceProviderRef& pDevice )
+ const SurfaceProviderRef& pDevice,
+ const basegfx::B2DRange& rBounds )
{
switch( aOperation ) {
case Fill:
@@ -790,19 +815,70 @@ namespace cairocanvas
cairo_matrix_init( &aTextureMatrix,
aTransform.m00, aTransform.m10, aTransform.m01,
aTransform.m11, aTransform.m02, aTransform.m12);
- Pattern* pPattern = patternFromParametricPolyPolygon( *pPolyImpl );
+ if( pPolyImpl->getValues().meType == canvas::ParametricPolyPolygon::GRADIENT_RECTANGULAR )
+ {
+ // no general path gradient yet in cairo; emulate then
+ cairo_save( pCairo );
+ cairo_clip( pCairo );
+
+ // fill bound rect with start color
+ cairo_rectangle( pCairo, rBounds.getMinX(), rBounds.getMinY(),
+ rBounds.getWidth(), rBounds.getHeight() );
+ setColor(pCairo,pPolyImpl->getValues().maColors[0]);
+ cairo_fill(pCairo);
+
+ cairo_transform( pCairo, &aTextureMatrix );
+
+ // longest line in gradient bound rect
+ const unsigned int nGradientSize(
+ static_cast<unsigned int>(
+ ::basegfx::B2DVector(rBounds.getMinimum() - rBounds.getMaximum()).getLength() + 1.0 ) );
+
+ // typical number for pixel of the same color (strip size)
+ const unsigned int nStripSize( nGradientSize < 50 ? 2 : 4 );
+
+ // use at least three steps, and at utmost the number of color
+ // steps
+ const unsigned int nStepCount(
+ ::std::max(
+ 3U,
+ ::std::min(
+ nGradientSize / nStripSize,
+ 128U )) + 1 );
+
+ const uno::Sequence<double>* pColors=&pPolyImpl->getValues().maColors[0];
+ basegfx::tools::KeyStopLerp aLerper(pPolyImpl->getValues().maStops);
+ for( unsigned int i=1; i<nStepCount; ++i )
+ {
+ const double fT( i/double(nStepCount) );
- if( pPattern ) {
- OSL_TRACE( "filling with pattern" );
+ std::ptrdiff_t nIndex;
+ double fAlpha;
+ boost::tuples::tie(nIndex,fAlpha)=aLerper.lerp(fT);
- cairo_save( pCairo );
+ setColor(pCairo, lerp(pColors[nIndex], pColors[nIndex+1], fAlpha));
+ cairo_rectangle( pCairo, -1+fT, -1+fT, 2-2*fT, 2-2*fT );
+ cairo_fill(pCairo);
+ }
- cairo_transform( pCairo, &aTextureMatrix );
- cairo_set_source( pCairo, pPattern );
- cairo_fill( pCairo );
cairo_restore( pCairo );
+ }
+ else
+ {
+ Pattern* pPattern = patternFromParametricPolyPolygon( *pPolyImpl );
+
+ if( pPattern ) {
+ OSL_TRACE( "filling with pattern" );
+
+ cairo_save( pCairo );
+
+ cairo_transform( pCairo, &aTextureMatrix );
+ cairo_set_source( pCairo, pPattern );
+ cairo_fill( pCairo );
+ cairo_restore( pCairo );
- cairo_pattern_destroy( pPattern );
+ cairo_pattern_destroy( pPattern );
+ }
}
}
}
@@ -935,7 +1011,7 @@ namespace cairocanvas
if( aOperation == Fill && pTextures ) {
cairo_set_matrix( pCairo, &aOrigMatrix );
- doOperation( aOperation, pCairo, pTextures, pDevice );
+ doOperation( aOperation, pCairo, pTextures, pDevice, aPolyPolygon.getB2DRange() );
cairo_set_matrix( pCairo, &aIdentityMatrix );
}
} else {
@@ -948,7 +1024,7 @@ namespace cairocanvas
}
}
if( bOpToDo && ( aOperation != Fill || !pTextures ) )
- doOperation( aOperation, pCairo, pTextures, pDevice );
+ doOperation( aOperation, pCairo, pTextures, pDevice, aPolyPolygon.getB2DRange() );
cairo_set_matrix( pCairo, &aOrigMatrix );
@@ -1171,12 +1247,12 @@ namespace cairocanvas
const rendering::ViewState& viewState,
const rendering::RenderState& renderState,
const geometry::IntegerSize2D& rSize,
- bool /*bModulateColors*/,
+ bool bModulateColors,
bool bHasAlpha )
{
SurfaceSharedPtr pSurface=pInputSurface;
uno::Reference< rendering::XCachedPrimitive > rv = uno::Reference< rendering::XCachedPrimitive >(NULL);
- geometry::IntegerSize2D aBitmapSize = rSize;
+ geometry::IntegerSize2D aBitmapSize = rSize;
if( mpCairo ) {
cairo_save( mpCairo.get() );
@@ -1198,38 +1274,38 @@ namespace cairocanvas
::rtl::math::approxEqual( aMatrix.y0, 0 ) &&
basegfx::fround( rSize.Width * aMatrix.xx ) > 8 &&
basegfx::fround( rSize.Height* aMatrix.yy ) > 8 )
- {
- double dWidth, dHeight;
-
- dWidth = basegfx::fround( rSize.Width * aMatrix.xx );
- dHeight = basegfx::fround( rSize.Height* aMatrix.yy );
- aBitmapSize.Width = static_cast<sal_Int32>( dWidth );
- aBitmapSize.Height = static_cast<sal_Int32>( dHeight );
-
- SurfaceSharedPtr pScaledSurface = mpSurfaceProvider->createSurface(
- ::basegfx::B2ISize( aBitmapSize.Width, aBitmapSize.Height ),
- bHasAlpha ? CAIRO_CONTENT_COLOR_ALPHA : CAIRO_CONTENT_COLOR );
- CairoSharedPtr pCairo = pScaledSurface->getCairo();
-
- cairo_set_operator( pCairo.get(), CAIRO_OPERATOR_SOURCE );
- // add 0.5px to size to avoid rounding errors in cairo, leading sometimes to random data on the image right/bottom borders
- cairo_scale( pCairo.get(), (dWidth+0.5)/rSize.Width, (dHeight+0.5)/rSize.Height );
- cairo_set_source_surface( pCairo.get(), pSurface->getCairoSurface().get(), 0, 0 );
- cairo_paint( pCairo.get() );
-
- pSurface = pScaledSurface;
-
- aMatrix.xx = aMatrix.yy = 1;
- cairo_set_matrix( mpCairo.get(), &aMatrix );
-
- rv = uno::Reference< rendering::XCachedPrimitive >(
- new CachedBitmap( pSurface, viewState, renderState,
- // cast away const, need to
- // change refcount (as this is
- // ~invisible to client code,
- // still logically const)
- const_cast< rendering::XCanvas* >(pCanvas)) );
- }
+ {
+ double dWidth, dHeight;
+
+ dWidth = basegfx::fround( rSize.Width * aMatrix.xx );
+ dHeight = basegfx::fround( rSize.Height* aMatrix.yy );
+ aBitmapSize.Width = static_cast<sal_Int32>( dWidth );
+ aBitmapSize.Height = static_cast<sal_Int32>( dHeight );
+
+ SurfaceSharedPtr pScaledSurface = mpSurfaceProvider->createSurface(
+ ::basegfx::B2ISize( aBitmapSize.Width, aBitmapSize.Height ),
+ bHasAlpha ? CAIRO_CONTENT_COLOR_ALPHA : CAIRO_CONTENT_COLOR );
+ CairoSharedPtr pCairo = pScaledSurface->getCairo();
+
+ cairo_set_operator( pCairo.get(), CAIRO_OPERATOR_SOURCE );
+ // add 0.5px to size to avoid rounding errors in cairo, leading sometimes to random data on the image right/bottom borders
+ cairo_scale( pCairo.get(), (dWidth+0.5)/rSize.Width, (dHeight+0.5)/rSize.Height );
+ cairo_set_source_surface( pCairo.get(), pSurface->getCairoSurface().get(), 0, 0 );
+ cairo_paint( pCairo.get() );
+
+ pSurface = pScaledSurface;
+
+ aMatrix.xx = aMatrix.yy = 1;
+ cairo_set_matrix( mpCairo.get(), &aMatrix );
+
+ rv = uno::Reference< rendering::XCachedPrimitive >(
+ new CachedBitmap( pSurface, viewState, renderState,
+ // cast away const, need to
+ // change refcount (as this is
+ // ~invisible to client code,
+ // still logically const)
+ const_cast< rendering::XCanvas* >(pCanvas)) );
+ }
if( !bHasAlpha && mbHaveAlpha )
{
@@ -1270,7 +1346,11 @@ namespace cairocanvas
cairo_set_operator( mpCairo.get(), CAIRO_OPERATOR_SOURCE );
cairo_rectangle( mpCairo.get(), 0, 0, aBitmapSize.Width, aBitmapSize.Height );
cairo_clip( mpCairo.get() );
- cairo_paint( mpCairo.get() );
+
+ if( bModulateColors )
+ cairo_paint_with_alpha( mpCairo.get(), renderState.DeviceColor[3] );
+ else
+ cairo_paint( mpCairo.get() );
cairo_restore( mpCairo.get() );
} else
OSL_TRACE ("CanvasHelper called after it was disposed");
@@ -1309,15 +1389,35 @@ namespace cairocanvas
return rv;
}
- uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawBitmapModulated( const rendering::XCanvas* ,
- const uno::Reference< rendering::XBitmap >& /*xBitmap*/,
- const rendering::ViewState& /*viewState*/,
- const rendering::RenderState& /*renderState*/ )
+ uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawBitmapModulated( const rendering::XCanvas* pCanvas,
+ const uno::Reference< rendering::XBitmap >& xBitmap,
+ const rendering::ViewState& viewState,
+ const rendering::RenderState& renderState )
{
- // TODO(F3): Implement modulated bitmap!
+#ifdef CAIRO_CANVAS_PERF_TRACE
+ struct timespec aTimer;
+ mxDevice->startPerfTrace( &aTimer );
+#endif
- // TODO(P1): Provide caching here.
- return uno::Reference< rendering::XCachedPrimitive >(NULL);
+ uno::Reference< rendering::XCachedPrimitive > rv;
+ unsigned char* data = NULL;
+ bool bHasAlpha = false;
+ SurfaceSharedPtr pSurface = surfaceFromXBitmap( xBitmap, mpSurfaceProvider, data, bHasAlpha );
+ geometry::IntegerSize2D aSize = xBitmap->getSize();
+
+ if( pSurface ) {
+ rv = implDrawBitmapSurface( pCanvas, pSurface, viewState, renderState, aSize, true, bHasAlpha );
+
+ if( data )
+ free( data );
+ } else
+ rv = uno::Reference< rendering::XCachedPrimitive >(NULL);
+
+#ifdef CAIRO_CANVAS_PERF_TRACE
+ mxDevice->stopPerfTrace( &aTimer, "drawBitmap" );
+#endif
+
+ return rv;
}
uno::Reference< rendering::XGraphicDevice > CanvasHelper::getDevice()
generated by cgit (git 2.34.1) at 2025-01-15 21:48:12 +0000