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107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
#include "Painter.h"
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namespace Upp {
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Image BufferPainter::MakeGradient(RGBA color1, Vector<ColorStop>& color_stop, RGBA color2, int n)
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{
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ImageBuffer ib(n, 1);
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RGBA *t = ib[0];
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int l = 0;
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RGBA cl = color1;
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for(int i = 0; i <= color_stop.GetCount(); i++) {
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int h;
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RGBA ch;
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if(i < color_stop.GetCount()) {
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h = (int)(color_stop[i].stop * (n - 1));
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ch = color_stop[i].color;
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}
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else {
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h = n - 1;
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ch = color2;
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}
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int w = h - l;
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for(int j = 0; j < w; j++) {
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t->r = ((w - j) * cl.r + j * ch.r) / w;
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t->g = ((w - j) * cl.g + j * ch.g) / w;
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t->b = ((w - j) * cl.b + j * ch.b) / w;
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t->a = ((w - j) * cl.a + j * ch.a) / w;
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t++;
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}
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cl = ch;
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l = h;
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}
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*t = cl;
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return Image(ib);
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}
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struct BufferPainter::GradientImageMaker : public ImageMaker {
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RGBA color1;
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Vector<ColorStop> *color_stop;
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RGBA color2;
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int n;
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virtual String Key() const;
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virtual Image Make() const;
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};
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String BufferPainter::GradientImageMaker::Key() const
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{
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StringStream ss;
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auto cc = const_cast<GradientImageMaker *>(this);
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ss % cc->color1 % *cc->color_stop % cc->color2 % cc->n;
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return ss.GetResult();
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}
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Image BufferPainter::GradientImageMaker::Make() const
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{
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return MakeGradient(color1, *color_stop, color2, n);
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}
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Image BufferPainter::MakeGradientCached(RGBA color1, Vector<ColorStop>& color_stop, RGBA color2, int n)
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{
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GradientImageMaker m;
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m.color1 = color1;
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m.color_stop = &color_stop;
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m.color2 = color2;
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m.n = n;
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return MakeImage(m);
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}
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Image BufferPainter::Gradient(const RGBA& color1, const RGBA& color2, int n)
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{
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return (imagecache ? MakeGradientCached : MakeGradient)(color1, pathattr.color_stop, color2, n);
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}
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Image BufferPainter::Gradient(const RGBA& color1, const RGBA& color2, const Pointf& p1, const Pointf& p2)
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{
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return Gradient(color1, color2, minmax(int(Distance(p1, p2) * pathattr.mtx.GetScale()), 2, 16384));
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}
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static dword sLinearStyle(int style)
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{
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dword s = style & ~FILL_FAST;
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return FILL_VPAD | (style & FILL_FAST) |
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decode(s, GRADIENT_PAD, FILL_HPAD, GRADIENT_REPEAT, FILL_HREPEAT, FILL_HREFLECT);
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}
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void BufferPainter::FillOp(const Pointf& p1, const RGBA& color1, const Pointf& p2, const RGBA& color2, int style)
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{
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Fill(Gradient(color1, color2, p1, p2), p1, p2, sLinearStyle(style));
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}
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void BufferPainter::FillOp(const RGBA& color1, const RGBA& color2, const Xform2D& transsrc, int style)
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{
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Fill(Gradient(color1, color2, 500), Xform2D::Scale(1.0 / 500) * transsrc, sLinearStyle(style));
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}
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void BufferPainter::StrokeOp(double width, const Pointf& p1, const RGBA& color1, const Pointf& p2, const RGBA& color2, int style)
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{
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Stroke(width, Gradient(color1, color2, p1, p2), p1, p2, sLinearStyle(style));
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}
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void BufferPainter::StrokeOp(double width, const RGBA& color1, const RGBA& color2, const Xform2D& transsrc, int style)
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{
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Stroke(width, Gradient(color1, color2, 500), Xform2D::Scale(1.0 / 500) * transsrc, sLinearStyle(style));
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}
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}
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