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[paint-extents] Flesh out some more

This commit is contained in:
Behdad Esfahbod 2022-12-23 14:57:12 -07:00
parent 268d8b7ded
commit c37a1eadef
1 changed files with 48 additions and 16 deletions
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64
src/hb-paint-extents.hh
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@ -62,14 +62,20 @@ typedef struct hb_transform_t
float y0 = 0.f;
} hb_transform_t;
typedef struct hb_extents_t
{
float xmin, ymin, xmax, ymax;
} hb_extents_t;
typedef struct hb_bounds_t
{
hb_bounds_t () {}
hb_bounds_t (const hb_glyph_extents_t &extents) :
hb_bounds_t (const hb_extents_t &extents) :
bounded (true), extents (extents) {}
bool bounded = false;
hb_glyph_extents_t extents = {0, 0, 0, 0};
bool empty = true;
hb_extents_t extents = {0, 0, 0, 0};
} hb_bounds_t;
typedef struct hb_paint_extents_context_t hb_paint_extents_context_t;
@ -95,8 +101,11 @@ struct hb_paint_extents_context_t {
transforms.pop ();
}
void push_clip (const hb_glyph_extents_t &extents)
void push_clip (hb_extents_t extents)
{
/* Transform extents and push a new clip. */
//hb_transform_t &r = transforms.tail ();
hb_bounds_t b {extents};
clips.push (b);
}
@ -116,11 +125,9 @@ struct hb_paint_extents_context_t {
return bounds.pop ();
}
void add_extents (const hb_glyph_extents_t &extents)
void paint ()
{
// TODO
//hb_transform_t &r = transforms.tail ();
/* Union current clip bounds with current bounds. */
}
hb_vector_t<hb_bounds_t> clips;
@ -158,9 +165,15 @@ hb_paint_extents_push_clip_glyph (hb_paint_funcs_t *funcs HB_UNUSED,
hb_font_t *font,
void *user_data HB_UNUSED)
{
//hb_paint_extents_context_t *c = (hb_paint_extents_context_t *) paint_data;
hb_paint_extents_context_t *c = (hb_paint_extents_context_t *) paint_data;
// TODO
hb_glyph_extents_t glyph_extents;
hb_font_get_glyph_extents (font, glyph, &glyph_extents);
hb_extents_t extents = {(float) glyph_extents.x_bearing,
(float) glyph_extents.y_bearing + glyph_extents.height,
(float) glyph_extents.x_bearing + glyph_extents.width,
(float) glyph_extents.y_bearing};
c->push_clip (extents);
}
static void
@ -169,7 +182,10 @@ hb_paint_extents_push_clip_rectangle (hb_paint_funcs_t *funcs HB_UNUSED,
float xmin, float ymin, float xmax, float ymax,
void *user_data)
{
// TODO
hb_paint_extents_context_t *c = (hb_paint_extents_context_t *) paint_data;
hb_extents_t extents = {xmin, ymin, xmax, ymax};
c->push_clip (extents);
}
static void
@ -213,10 +229,18 @@ hb_paint_extents_paint_image (hb_paint_funcs_t *funcs HB_UNUSED,
unsigned int height HB_UNUSED,
hb_tag_t format HB_UNUSED,
float slant HB_UNUSED,
hb_glyph_extents_t *extents,
hb_glyph_extents_t *glyph_extents,
void *user_data HB_UNUSED)
{
// TODO
hb_paint_extents_context_t *c = (hb_paint_extents_context_t *) paint_data;
hb_extents_t extents = {(float) glyph_extents->x_bearing,
(float) glyph_extents->y_bearing + glyph_extents->height,
(float) glyph_extents->x_bearing + glyph_extents->width,
(float) glyph_extents->y_bearing};
c->push_clip (extents);
c->paint ();
c->pop_clip ();
}
static void
@ -226,7 +250,9 @@ hb_paint_extents_paint_color (hb_paint_funcs_t *funcs HB_UNUSED,
hb_color_t color HB_UNUSED,
void *user_data HB_UNUSED)
{
// TODO
hb_paint_extents_context_t *c = (hb_paint_extents_context_t *) paint_data;
c->paint ();
}
static void
@ -238,7 +264,9 @@ hb_paint_extents_paint_linear_gradient (hb_paint_funcs_t *funcs HB_UNUSED,
float x2 HB_UNUSED, float y2 HB_UNUSED,
void *user_data HB_UNUSED)
{
// TODO
hb_paint_extents_context_t *c = (hb_paint_extents_context_t *) paint_data;
c->paint ();
}
static void
@ -249,7 +277,9 @@ hb_paint_extents_paint_radial_gradient (hb_paint_funcs_t *funcs HB_UNUSED,
float x1 HB_UNUSED, float y1 HB_UNUSED, float r1 HB_UNUSED,
void *user_data HB_UNUSED)
{
// TODO
hb_paint_extents_context_t *c = (hb_paint_extents_context_t *) paint_data;
c->paint ();
}
static void
@ -261,7 +291,9 @@ hb_paint_extents_paint_sweep_gradient (hb_paint_funcs_t *funcs HB_UNUSED,
float end_angle HB_UNUSED,
void *user_data HB_UNUSED)
{
// TODO
hb_paint_extents_context_t *c = (hb_paint_extents_context_t *) paint_data;
c->paint ();
}
static inline hb_paint_funcs_t *