Implement hb_color_line_t
This commit is contained in:
Matthias Clasen
Behdad Esfahbod
parent
64f1b55d01
commit
3937d6b0aa
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@ -32,6 +32,7 @@
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#include "hb-ot-layout-common.hh"
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#include "hb-ot-var-common.hh"
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#include "hb-paint.hh"
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#include <math.h>
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/*
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* COLR -- Color
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@ -43,6 +44,11 @@
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#define HB_COLRV1_MAX_NESTING_LEVEL 128
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#endif
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struct hb_color_line_t {
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const void *base;
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OT::HBUINT8 format;
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};
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namespace OT {
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struct COLR;
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@ -51,7 +57,7 @@ struct hb_paint_context_t;
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struct Paint;
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static void paint_dispatch (const Paint *paint, hb_paint_context_t *c);
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static void paint_glyph_dispatch (const Paint *paint, hb_paint_context_t *c);
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struct hb_paint_context_t {
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@ -213,6 +219,11 @@ struct Variable
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value.paint_glyph (c);
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}
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void get_color_stop (hb_color_stop_t *c) const
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{
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value.get_color_stop (c);
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}
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protected:
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T value;
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public:
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@ -252,6 +263,11 @@ struct NoVariable
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value.paint_glyph (c);
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}
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void get_color_stop (hb_color_stop_t *c) const
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{
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value.get_color_stop (c);
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}
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T value;
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public:
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DEFINE_SIZE_STATIC (T::static_size);
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@ -279,6 +295,13 @@ struct ColorStop
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return_trace (c->check_struct (this));
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}
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void get_color_stop (hb_color_stop_t *out) const
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{
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out->offset = stopOffset.to_float();
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out->color_index = paletteIndex;
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out->alpha = alpha.to_float();
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}
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F2DOT14 stopOffset;
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HBUINT16 paletteIndex;
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F2DOT14 alpha;
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@ -330,6 +353,25 @@ struct ColorLine
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stops.sanitize (c));
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}
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/* get up to count stops from start */
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unsigned int
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get_color_stops (unsigned int start,
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unsigned int *count,
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hb_color_stop_t *color_stops) const
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{
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unsigned int len = stops.len;
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if (count && color_stops)
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{
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unsigned int i;
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for (i = 0; i < *count && start + i < len; i++)
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stops[start + i].get_color_stop (&color_stops[i]);
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*count = i;
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}
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return len;
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}
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Extend extend;
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Array16Of<Var<ColorStop>> stops;
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public:
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@ -496,7 +538,16 @@ struct PaintLinearGradient
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->linear_gradient (c->data, nullptr, x0, y0, x1, y1, x2, y2);
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hb_color_line_t cl = { this, format };
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c->funcs->linear_gradient (c->data, &cl, x0, y0, x1, y1, x2, y2);
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}
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unsigned int get_color_stops (unsigned int start,
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unsigned int *count,
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hb_color_stop_t *stops) const
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{
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return (this+colorLine).get_color_stops (start, count, stops);
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}
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HBUINT8 format; /* format = 4(noVar) or 5 (Var) */
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@ -535,7 +586,16 @@ struct PaintRadialGradient
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->radial_gradient (c->data, nullptr, x0, y0, radius0, x1, y1, radius1);
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hb_color_line_t cl = { this, format };
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c->funcs->radial_gradient (c->data, &cl, x0, y0, radius0, x1, y1, radius1);
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}
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unsigned int get_color_stops (unsigned int start,
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unsigned int *count,
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hb_color_stop_t *stops) const
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{
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return (this+colorLine).get_color_stops (start, count, stops);
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}
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HBUINT8 format; /* format = 6(noVar) or 7 (Var) */
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@ -574,7 +634,16 @@ struct PaintSweepGradient
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->sweep_gradient (c->data, nullptr, centerX, centerY, startAngle, endAngle);
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hb_color_line_t cl = { this, format };
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c->funcs->sweep_gradient (c->data, &cl, centerX, centerY, startAngle, endAngle);
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}
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unsigned int get_color_stops (unsigned int start,
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unsigned int *count,
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hb_color_stop_t *stops) const
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{
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return (this+colorLine).get_color_stops (start, count, stops);
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}
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HBUINT8 format; /* format = 8(noVar) or 9 (Var) */
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@ -615,7 +684,7 @@ struct PaintGlyph
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->push_clip_glyph (c->data, gid);
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paint_dispatch (&(this+paint), c);
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paint_glyph_dispatch (&(this+paint), c);
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c->funcs->pop_clip (c->data);
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}
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@ -683,7 +752,7 @@ struct PaintTransform
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void paint_glyph (hb_paint_context_t *c) const
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{
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(this+transform).paint_glyph (c);
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paint_dispatch (&(this+src), c);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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}
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@ -715,8 +784,8 @@ struct PaintTranslate
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->push_transform (c->data, 0, 0, 0, 0, 0, 0);
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paint_dispatch (&(this+src), c);
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c->funcs->push_transform (c->data, 0, 0, 0, 0, dx, dy);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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}
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@ -749,8 +818,8 @@ struct PaintScale
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->push_transform (c->data, scaleX, 0, 0, scaleY, 0, 0);
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paint_dispatch (&(this+src), c);
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c->funcs->push_transform (c->data, scaleX.to_float (), 0, 0, scaleY.to_float (), 0, 0);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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}
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@ -784,9 +853,9 @@ struct PaintScaleAroundCenter
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->push_transform (c->data, 0, 0, 0, 0, centerX, centerY);
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c->funcs->push_transform (c->data, scaleX, 0, 0, scaleY, 0, 0);
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c->funcs->push_transform (c->data, scaleX.to_float (), 0, 0, scaleY.to_float (), 0, 0);
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c->funcs->push_transform (c->data, 0, 0, 0, 0, - centerX, - centerY);
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paint_dispatch (&(this+src), c);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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c->funcs->pop_transform (c->data);
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c->funcs->pop_transform (c->data);
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@ -823,6 +892,9 @@ struct PaintScaleUniform
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->push_transform (c->data, scale.to_float (), 0, 0, scale.to_float (), 0, 0);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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}
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HBUINT8 format; /* format = 20 (noVar) or 21(Var) */
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@ -853,6 +925,13 @@ struct PaintScaleUniformAroundCenter
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->push_transform (c->data, 0, 0, 0, 0, centerX, centerY);
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c->funcs->push_transform (c->data, scale.to_float (), 0, 0, scale.to_float (), 0, 0);
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c->funcs->push_transform (c->data, 0, 0, 0, 0, - centerX, - centerY);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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c->funcs->pop_transform (c->data);
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c->funcs->pop_transform (c->data);
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}
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HBUINT8 format; /* format = 22 (noVar) or 23(Var) */
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@ -885,6 +964,11 @@ struct PaintRotate
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void paint_glyph (hb_paint_context_t *c) const
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{
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float cc = cosf (angle.to_float() * (float)M_PI);
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float ss = sinf (angle.to_float() * (float)M_PI);
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c->funcs->push_transform (c->data, cc, ss, -ss, cc, 0, 0);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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}
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HBUINT8 format; /* format = 24 (noVar) or 25(Var) */
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@ -915,6 +999,15 @@ struct PaintRotateAroundCenter
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void paint_glyph (hb_paint_context_t *c) const
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{
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float cc = cosf (angle.to_float() * (float)M_PI);
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float ss = sinf (angle.to_float() * (float)M_PI);
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c->funcs->push_transform (c->data, 0, 0, 0, 0, centerX, centerY);
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c->funcs->push_transform (c->data, cc, ss, -ss, cc, 0, 0);
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c->funcs->push_transform (c->data, 0, 0, 0, 0, - centerX, - centerY);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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c->funcs->pop_transform (c->data);
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c->funcs->pop_transform (c->data);
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}
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HBUINT8 format; /* format = 26 (noVar) or 27(Var) */
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@ -947,6 +1040,11 @@ struct PaintSkew
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void paint_glyph (hb_paint_context_t *c) const
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{
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float x = tanf (xSkewAngle.to_float() * (float)M_PI);
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float y = - tanf (ySkewAngle.to_float() * (float)M_PI);
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c->funcs->push_transform (c->data, 1, y, x, 1, 0, 0);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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}
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HBUINT8 format; /* format = 28(noVar) or 29 (Var) */
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@ -978,6 +1076,15 @@ struct PaintSkewAroundCenter
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void paint_glyph (hb_paint_context_t *c) const
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{
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float x = tanf (xSkewAngle.to_float() * (float)M_PI);
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float y = - tanf (ySkewAngle.to_float() * (float)M_PI);
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c->funcs->push_transform (c->data, 0, 0, 0, 0, centerX, centerY);
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c->funcs->push_transform (c->data, 1, y, x, 1, 0, 0);
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c->funcs->push_transform (c->data, 0, 0, 0, 0, - centerX, - centerY);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_transform (c->data);
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c->funcs->pop_transform (c->data);
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c->funcs->pop_transform (c->data);
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}
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HBUINT8 format; /* format = 30(noVar) or 31 (Var) */
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@ -1015,10 +1122,10 @@ struct PaintComposite
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void paint_glyph (hb_paint_context_t *c) const
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{
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c->funcs->push_group (c->data);
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paint_dispatch (&(this+backdrop), c);
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paint_glyph_dispatch (&(this+backdrop), c);
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c->funcs->push_group (c->data);
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paint_dispatch (&(this+src), c);
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c->funcs->pop_group (c->data, (hb_paint_composite_mode_t) (int)mode);
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paint_glyph_dispatch (&(this+src), c);
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c->funcs->pop_group (c->data, (hb_paint_composite_mode_t) (int) mode);
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c->funcs->pop_group (c->data, HB_PAINT_COMPOSITE_MODE_SRC_OVER);
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}
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@ -1826,7 +1933,7 @@ struct COLR_accelerator_t : COLR::accelerator_t {
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};
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static void
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paint_dispatch (const Paint *paint, hb_paint_context_t *c)
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paint_glyph_dispatch (const Paint *paint, hb_paint_context_t *c)
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{
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paint->paint_glyph (c);
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}
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