//-----------------------------------------------------------------------------
void GdiplusDrawContext::fillLinearGradient (CGraphicsPath* _path, const CGradient& gradient, const CPoint& startPoint, const CPoint& endPoint, bool evenOdd, CGraphicsTransform* t)
{
#if DEBUG
DebugPrint ("WARNING: GdiplusDrawContext::fillLinearGradient is not working as expected ! FIXME");
#endif
GdiplusGraphicsPath* gdiPlusPath = dynamic_cast<GdiplusGraphicsPath*> (_path);
if (gdiPlusPath && pGraphics)
{
GdiplusDrawScope drawScope (pGraphics, currentState.clipRect, getCurrentTransform ());
Gdiplus::GraphicsPath* path = gdiPlusPath->getGraphicsPath ();
if (t)
{
Gdiplus::Matrix matrix;
convert (matrix, *t);
path = path->Clone ();
path->Transform (&matrix);
}
Gdiplus::Color* colors = new Gdiplus::Color [gradient.getColorStops ().size ()];
Gdiplus::REAL* positions = new Gdiplus::REAL [gradient.getColorStops ().size ()];
uint32_t index = 0;
for (CGradient::ColorStopMap::const_iterator it = gradient.getColorStops ().begin (); it != gradient.getColorStops ().end (); ++it, ++index)
{
CColor color = it->second;
color.alpha = (int8_t)((float)color.alpha * currentState.globalAlpha);
colors[index] = createGdiPlusColor (color);
positions[index] = (Gdiplus::REAL)it->first;
}
Gdiplus::PointF c1p ((Gdiplus::REAL)(startPoint.x), (Gdiplus::REAL)(startPoint.y));
Gdiplus::PointF c2p ((Gdiplus::REAL)(endPoint.x), (Gdiplus::REAL)(endPoint.y));
Gdiplus::LinearGradientBrush brush (c1p, c2p, colors[0], colors[gradient.getColorStops ().size () - 1]);
brush.SetInterpolationColors (colors, positions, static_cast<INT> (gradient.getColorStops ().size ()));
path->SetFillMode (evenOdd ? Gdiplus::FillModeAlternate : Gdiplus::FillModeWinding);
pGraphics->FillPath (&brush, path);
if (path != gdiPlusPath->getGraphicsPath ())
delete path;
delete [] colors;
delete [] positions;
}
}
void LinearGradientBrush::SetBlendPosition(float b) {
Gdiplus::LinearGradientBrush* gdiBrush = dynamic_cast<Gdiplus::LinearGradientBrush*>(reinterpret_cast<Gdiplus::Brush*>(_private));
float blendPositions[3] = { 0.0f, b, 1.0f };
float blendFactors[3] = { 0.0f, 0.5f, 1.0f };
gdiBrush->SetBlend(blendFactors, blendPositions, 3);
}
Gdiplus::Brush* GetGdiBrush(IPDBrush* brush, PDBrushType brushType = BRUSH_NONE)
{
Gdiplus::Brush* pBrush = NULL;
if (brushType == BRUSH_NONE)
{
if (brush) brush->get_brushType(&brushType);
}
if (brushType == (PDBrushType)tomUndefined)
{
}
else if (brushType == BRUSH_COLOR)
{
CComPtr<IPDColor> color;
brush->get_tintedRGBColor(&color);
if (color)
{
double red; color->getChannel(0, &red);
double green; color->getChannel(1, &green);
double blue; color->getChannel(2, &blue);
pBrush = new Gdiplus::SolidBrush(Gdiplus::Color(255, red, green, blue));
}
}
else if (brushType == BRUSH_GRADIENT)
{
CComPtr<IPDGradient> gradient;
brush->get_gradient(&gradient);
if (gradient)
{
PDGradientType gradientType;
gradient->get_type(&gradientType);
double x1; brush->get_x1(&x1);
double y1; brush->get_y1(&y1);
double x2; brush->get_x2(&x2);
double y2; brush->get_y2(&y2);
CArray<Gdiplus::REAL, Gdiplus::REAL> offsets;
CArray<Gdiplus::Color,Gdiplus::Color&> colors;
CreateGradient(offsets, colors, gradient);
if (gradientType == GRADIENT_LINEAR)
{
Gdiplus::LinearGradientBrush* pGradBrush = new Gdiplus::LinearGradientBrush(
Gdiplus::Point(x1, y1),
Gdiplus::Point(x2, y2),
Gdiplus::Color(0,0,0,0), Gdiplus::Color(0,0,0,0));
pGradBrush->SetInterpolationColors(colors.GetData(), offsets.GetData(), colors.GetSize());
pBrush = pGradBrush;
}
else if (gradientType == GRADIENT_RADIAL)
{
double dx = x2-x1;
double dy = y2-y1;
double radius = sqrt(dx*dx+dy*dy);
Gdiplus::GraphicsPath path;
path.AddEllipse((float)(x1-radius), (float)(y1-radius), (float)(x1+radius), (float)(y1+radius));
Gdiplus::PathGradientBrush* pGradBrush = new Gdiplus::PathGradientBrush(&path);
pGradBrush->SetInterpolationColors(colors.GetData(), offsets.GetData(), colors.GetSize());
pBrush = pGradBrush;
}
else
ATLASSERT(0);
}
}
else if (brushType == BRUSH_PATTERN)
{
CComPtr<IPDSwatch> swatch;
brush->get_swatch(&swatch);
CComQIPtr<IPDSwatchPattern> swatchPattern = swatch;
CComPtr<IPDObjectGroup> objectGroup;
swatchPattern->get_objectGroup(&objectGroup);
if (objectGroup)
{
CPDObjectGroup* pGroup = static_cast<CPDObjectGroup*>(objectGroup.p);
RectD bounds;
pGroup->get_bounds(&bounds);
Gdiplus::Bitmap bitmap(bounds.Width, bounds.Height);
{
Gdiplus::Graphics graphics(&bitmap);
//graphics.ScaleTransform(swatchRect.Width()/bounds.Width, swatchRect.Height()/bounds.Height);
graphics.TranslateTransform(-bounds.X, -bounds.Y);
pGroup->Render(NULL, &graphics, 1, 1/*TODO*/);
}
Gdiplus::TextureBrush* pTexBrush = new Gdiplus::TextureBrush(&bitmap);
pBrush = pTexBrush;
}
}
return pBrush;
}