Add some docs
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@ -184,7 +184,11 @@ HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
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/**
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/**
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* hb_paint_funcs_create:
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* hb_paint_funcs_create:
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*
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*
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* Returns value: (transfer full):
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* Creates a new #hb_paint_funcs_t structure of paint functions.
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* Returns value: (transfer full): the paint-functions structure
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*
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* Since: REPLACEME
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*/
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*/
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hb_paint_funcs_t *
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hb_paint_funcs_t *
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hb_paint_funcs_create ()
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hb_paint_funcs_create ()
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@ -209,12 +213,33 @@ DEFINE_NULL_INSTANCE (hb_paint_funcs_t) =
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}
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}
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};
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};
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/**
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* hb_paint_funcs_reference: (skip)
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* @funcs: The paint-functions structure
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*
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* Increases the reference count on a paint-functions structure.
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*
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* Return value: The paint-functions structure
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*
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* Since: REPLACEME
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*/
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hb_paint_funcs_t *
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hb_paint_funcs_t *
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hb_paint_funcs_reference (hb_paint_funcs_t *funcs)
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hb_paint_funcs_reference (hb_paint_funcs_t *funcs)
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{
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{
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return hb_object_reference (funcs);
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return hb_object_reference (funcs);
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}
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}
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/**
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* hb_paint_funcs_destroy: (skip)
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* @funcs: The paint-functions structure
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*
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* Decreases the reference count on a paint-functions structure.
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*
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* When the reference count reaches zero, the structure
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* is destroyed, freeing all memory.
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*
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* Since: REPLACEME
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*/
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void
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void
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hb_paint_funcs_destroy (hb_paint_funcs_t *funcs)
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hb_paint_funcs_destroy (hb_paint_funcs_t *funcs)
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{
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{
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@ -233,6 +258,17 @@ hb_paint_funcs_destroy (hb_paint_funcs_t *funcs)
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hb_free (funcs);
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hb_free (funcs);
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}
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}
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/**
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* hb_paint_funcs_make_immutable:
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* @funcs: The paint-functions structure
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*
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* Makes a paint-functions structure immutable.
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*
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* After this call, all attempts to set one of the callbacks
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* on @funcs will fail.
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*
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* Since: REPLACEME
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*/
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void
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void
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hb_paint_funcs_make_immutable (hb_paint_funcs_t *funcs)
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hb_paint_funcs_make_immutable (hb_paint_funcs_t *funcs)
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{
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{
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@ -242,6 +278,16 @@ hb_paint_funcs_make_immutable (hb_paint_funcs_t *funcs)
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hb_object_make_immutable (funcs);
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hb_object_make_immutable (funcs);
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}
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}
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/**
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* hb_paint_funcs_is_immutable:
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* @funcs: The paint-functions structure
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*
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* Tests whether a paint-functions structure is immutable.
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*
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* Return value: `true` if @funcs is immutable, `false` otherwise
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*
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* Since: REPLACEME
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*/
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hb_bool_t
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hb_bool_t
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hb_paint_funcs_is_immutable (hb_paint_funcs_t *funcs)
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hb_paint_funcs_is_immutable (hb_paint_funcs_t *funcs)
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{
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{
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204
src/hb-paint.h
204
src/hb-paint.h
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@ -85,16 +85,16 @@ hb_paint_funcs_is_immutable (hb_paint_funcs_t *funcs);
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* a transform to subsequent paint calls.
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* a transform to subsequent paint calls.
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*
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*
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* This transform is applied after the current transform,
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* This transform is applied after the current transform,
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* and remains in effect until a matching call to the
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* and remains in effect until a matching call to
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* #hb_paint_funcs_pop_transform_func_t vfunc.
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* the #hb_paint_funcs_pop_transform_func_t vfunc.
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*
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*
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* Since: REPLACEME
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* Since: REPLACEME
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*/
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*/
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typedef void (*hb_paint_push_transform_func_t) (hb_paint_funcs_t *funcs,
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typedef void (*hb_paint_push_transform_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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void *paint_data,
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float xx, float xy,
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float xx, float yx,
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float yx, float yy,
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float xy, float yy,
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float x0, float y0,
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float dx, float dy,
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void *user_data);
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void *user_data);
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/**
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/**
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@ -126,9 +126,14 @@ typedef void (*hb_paint_pop_transform_func_t) (hb_paint_funcs_t *funcs,
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* The coordinates of the glyph outline are interpreted according
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* The coordinates of the glyph outline are interpreted according
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* to the current transform.
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* to the current transform.
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*
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*
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* Note that hb_font_paint_glyph() applies the scale and slant of
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* the font as a transform, so you need to pass an unscaled, unslanted
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* copy of the font to hb_font_get_glyph_shape() when obtaining outlines,
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* to avoid double scaling.
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*
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* This clip is applied in addition to the current clip,
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* This clip is applied in addition to the current clip,
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* and remains in effect until a matching call to the
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* and remains in effect until a matching call to
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* #hb_paint_funcs_pop_clip_func_t vfunc.
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* the #hb_paint_funcs_pop_clip_func_t vfunc.
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*
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*
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* Since: REPLACEME
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* Since: REPLACEME
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*/
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*/
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@ -154,8 +159,8 @@ typedef void (*hb_paint_push_clip_glyph_func_t) (hb_paint_funcs_t *funcs,
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* to the current transform.
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* to the current transform.
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*
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*
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* This clip is applied in addition to the current clip,
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* This clip is applied in addition to the current clip,
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* and remains in effect until a matching call to the
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* and remains in effect until a matching call to
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* #hb_paint_funcs_pop_clip_func_t vfunc.
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* the #hb_paint_funcs_pop_clip_func_t vfunc.
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*
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*
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* Since: REPLACEME
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* Since: REPLACEME
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*/
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*/
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@ -193,7 +198,7 @@ typedef void (*hb_paint_pop_clip_func_t) (hb_paint_funcs_t *funcs,
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* color everywhere within the current clip.
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* color everywhere within the current clip.
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*
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*
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* The @color_index can be either an index into one of the fonts
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* The @color_index can be either an index into one of the fonts
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* color palettes, or the special value #FFFF, which indicates that
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* color palettes, or the special value 0xFFFF, which indicates that
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* the foreground color should be used.
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* the foreground color should be used.
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*
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*
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* In either case, the @alpha value should be applied in addition
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* In either case, the @alpha value should be applied in addition
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@ -208,8 +213,28 @@ typedef void (*hb_paint_solid_func_t) (hb_paint_funcs_t *funcs,
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void *user_data);
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void *user_data);
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/**
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* hb_color_line_t:
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*
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* An opaque struct containing color information for a gradient.
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*
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* Since: REPLACEME
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*/
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typedef struct hb_color_line_t hb_color_line_t;
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typedef struct hb_color_line_t hb_color_line_t;
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/**
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* hb_color_stop_t:
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* @offset: the offset of the color stop
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* @color_index: either a color palette index or the special value 0xFFFF
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* @alpha: alpha to apply
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*
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* Information about a color stop on a color line.
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*
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* Color lines typically have offsets ranging between 0 and 1,
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* but that is not required.
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*
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* Since: REPLACEME
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*/
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typedef struct {
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typedef struct {
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float offset;
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float offset;
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unsigned int color_index;
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unsigned int color_index;
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@ -250,9 +275,9 @@ hb_color_line_get_extend (hb_color_line_t *color_line);
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* The coordinates of the points are interpreted according
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* The coordinates of the points are interpreted according
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* to the current transform.
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* to the current transform.
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*
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*
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* See the OpenType spec COLR section (FIXME link) for details on how the
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* See the OpenType spec COLR section (https://learn.microsoft.com/en-us/typography/opentype/spec/colr)
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* points define the direction of the gradient, and how
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* for details on how the points define the direction of the
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* to interpret the @color_line.
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* gradient, and how to interpret the @color_line.
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*
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*
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* Since: REPLACEME
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* Since: REPLACEME
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*/
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*/
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@ -283,9 +308,9 @@ typedef void (*hb_paint_linear_gradient_func_t) (hb_paint_funcs_t *funcs,
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* The coordinates of the points are interpreted according
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* The coordinates of the points are interpreted according
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* to the current transform.
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* to the current transform.
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*
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*
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* See the OpenType spec COLR section (FIXME link) for details on how the
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* See the OpenType spec COLR section (https://learn.microsoft.com/en-us/typography/opentype/spec/colr)
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* points define the direction of the gradient, and how
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* for details on how the points define the direction of the
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* to interpret the @color_line.
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* gradient, and how to interpret the @color_line.
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*
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*
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* Since: REPLACEME
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* Since: REPLACEME
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*/
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*/
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@ -313,9 +338,9 @@ typedef void (*hb_paint_radial_gradient_func_t) (hb_paint_funcs_t *funcs,
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* The coordinates of the points are interpreted according
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* The coordinates of the points are interpreted according
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* to the current transform.
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* to the current transform.
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*
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*
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* See the OpenType spec COLR section (FIXME link) for details on how the
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* See the OpenType spec COLR section (https://learn.microsoft.com/en-us/typography/opentype/spec/colr)
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* points define the direction of the gradient, and how
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* for details on how the points define the direction of the
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* to interpret the @color_line.
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* gradient, and how to interpret the @color_line.
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*
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*
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* Since: REPLACEME
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* Since: REPLACEME
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*/
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*/
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@ -401,10 +426,14 @@ typedef void (*hb_paint_pop_group_func_t) (hb_paint_funcs_t *funcs,
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/**
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/**
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* hb_paint_funcs_set_push_transform_func:
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* hb_paint_funcs_set_push_transform_func:
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* @funcs:
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* @funcs: A paint functions struct
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @func: (closure user_data) (destroy destroy) (scope notified): The push-transform callback
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* @user_data:
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* @user_data: Data to pass to @func
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* @destroy: (nullable)
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* @destroy: (nullable): Function to call when @user_data is no longer needed
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*
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* Sets the push-transform callback on the paint functions struct.
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*
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* Since: REPLACEME
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*/
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*/
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HB_EXTERN void
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HB_EXTERN void
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hb_paint_funcs_set_push_transform_func (hb_paint_funcs_t *funcs,
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hb_paint_funcs_set_push_transform_func (hb_paint_funcs_t *funcs,
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@ -414,10 +443,14 @@ hb_paint_funcs_set_push_transform_func (hb_paint_funcs_t *funcs,
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/**
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/**
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* hb_paint_funcs_set_pop_transform_func:
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* hb_paint_funcs_set_pop_transform_func:
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* @funcs:
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* @funcs: A paint functions struct
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @func: (closure user_data) (destroy destroy) (scope notified): The pop-transform callback
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* @user_data:
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* @user_data: Data to pass to @func
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* @destroy: (nullable)
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* @destroy: (nullable): Function to call when @user_data is no longer needed
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*
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* Sets the pop-transform callback on the paint functions struct.
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*
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* Since: REPLACEME
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*/
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*/
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HB_EXTERN void
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HB_EXTERN void
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hb_paint_funcs_set_pop_transform_func (hb_paint_funcs_t *funcs,
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hb_paint_funcs_set_pop_transform_func (hb_paint_funcs_t *funcs,
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@ -427,10 +460,14 @@ hb_paint_funcs_set_pop_transform_func (hb_paint_funcs_t *funcs,
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/**
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/**
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* hb_paint_funcs_set_push_clip_glyph_func:
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* hb_paint_funcs_set_push_clip_glyph_func:
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* @funcs:
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* @funcs: A paint functions struct
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @func: (closure user_data) (destroy destroy) (scope notified): The push-clip-glyph callback
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* @user_data:
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* @user_data: Data to pass to @func
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* @destroy: (nullable)
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* @destroy: (nullable): Function to call when @user_data is no longer needed
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*
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* Sets the push-clip-glyph callback on the paint functions struct.
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*
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* Since: REPLACEME
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*/
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*/
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HB_EXTERN void
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HB_EXTERN void
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hb_paint_funcs_set_push_clip_glyph_func (hb_paint_funcs_t *funcs,
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hb_paint_funcs_set_push_clip_glyph_func (hb_paint_funcs_t *funcs,
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@ -440,10 +477,14 @@ hb_paint_funcs_set_push_clip_glyph_func (hb_paint_funcs_t *funcs,
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/**
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/**
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* hb_paint_funcs_set_push_clip_rect_func:
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* hb_paint_funcs_set_push_clip_rect_func:
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* @funcs:
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* @funcs: A paint functions struct
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @func: (closure user_data) (destroy destroy) (scope notified): The push-clip-rect callback
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* @user_data:
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* @user_data: Data to pass to @func
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* @destroy: (nullable)
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* @destroy: (nullable): Function to call when @user_data is no longer needed
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*
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* Sets the push-clip-rect callback on the paint functions struct.
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*
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* Since: REPLACEME
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*/
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*/
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HB_EXTERN void
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HB_EXTERN void
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hb_paint_funcs_set_push_clip_rect_func (hb_paint_funcs_t *funcs,
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hb_paint_funcs_set_push_clip_rect_func (hb_paint_funcs_t *funcs,
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@ -453,10 +494,14 @@ hb_paint_funcs_set_push_clip_rect_func (hb_paint_funcs_t *funcs,
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/**
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/**
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* hb_paint_funcs_set_pop_clip_func:
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* hb_paint_funcs_set_pop_clip_func:
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* @funcs:
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* @funcs: A paint functions struct
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @func: (closure user_data) (destroy destroy) (scope notified): The pop-clip callback
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* @user_data:
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* @user_data: Data to pass to @func
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* @destroy: (nullable)
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* @destroy: (nullable): Function to call when @user_data is no longer needed
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*
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* Sets the pop-clip callback on the paint functions struct.
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*
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* Since: REPLACEME
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*/
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*/
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HB_EXTERN void
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HB_EXTERN void
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hb_paint_funcs_set_pop_clip_func (hb_paint_funcs_t *funcs,
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hb_paint_funcs_set_pop_clip_func (hb_paint_funcs_t *funcs,
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@ -466,10 +511,14 @@ hb_paint_funcs_set_pop_clip_func (hb_paint_funcs_t *funcs,
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/**
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/**
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* hb_paint_funcs_set_solid_func:
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* hb_paint_funcs_set_solid_func:
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* @funcs:
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* @funcs: A paint functions struct
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @func: (closure user_data) (destroy destroy) (scope notified): The paint-solid callback
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* @user_data:
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* @user_data: Data to pass to @func
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* @destroy: (nullable)
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* @destroy: (nullable): Function to call when @user_data is no longer needed
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*
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* Sets the paint-solid callback on the paint functions struct.
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*
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* Since: REPLACEME
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*/
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*/
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HB_EXTERN void
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HB_EXTERN void
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hb_paint_funcs_set_solid_func (hb_paint_funcs_t *funcs,
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hb_paint_funcs_set_solid_func (hb_paint_funcs_t *funcs,
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@ -479,10 +528,14 @@ hb_paint_funcs_set_solid_func (hb_paint_funcs_t *funcs,
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/**
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/**
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||||||
* hb_paint_funcs_set_linear_gradient_func:
|
* hb_paint_funcs_set_linear_gradient_func:
|
||||||
* @funcs:
|
* @funcs: A paint functions struct
|
||||||
* @func: (closure user_data) (destroy destroy) (scope notified):
|
* @func: (closure user_data) (destroy destroy) (scope notified): The linear-gradient callback
|
||||||
* @user_data:
|
* @user_data: Data to pass to @func
|
||||||
* @destroy: (nullable)
|
* @destroy: (nullable): Function to call when @user_data is no longer needed
|
||||||
|
*
|
||||||
|
* Sets the linear-gradient callback on the paint functions struct.
|
||||||
|
*
|
||||||
|
* Since: REPLACEME
|
||||||
*/
|
*/
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_funcs_set_linear_gradient_func (hb_paint_funcs_t *funcs,
|
hb_paint_funcs_set_linear_gradient_func (hb_paint_funcs_t *funcs,
|
||||||
|
@ -492,10 +545,14 @@ hb_paint_funcs_set_linear_gradient_func (hb_paint_funcs_t *funcs,
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* hb_paint_funcs_set_radial_gradient_func:
|
* hb_paint_funcs_set_radial_gradient_func:
|
||||||
* @funcs:
|
* @funcs: A paint functions struct
|
||||||
* @func: (closure user_data) (destroy destroy) (scope notified):
|
* @func: (closure user_data) (destroy destroy) (scope notified): The radial-gradient callback
|
||||||
* @user_data:
|
* @user_data: Data to pass to @func
|
||||||
* @destroy: (nullable)
|
* @destroy: (nullable): Function to call when @user_data is no longer needed
|
||||||
|
*
|
||||||
|
* Sets the radial-gradient callback on the paint functions struct.
|
||||||
|
*
|
||||||
|
* Since: REPLACEME
|
||||||
*/
|
*/
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_funcs_set_radial_gradient_func (hb_paint_funcs_t *funcs,
|
hb_paint_funcs_set_radial_gradient_func (hb_paint_funcs_t *funcs,
|
||||||
|
@ -505,10 +562,14 @@ hb_paint_funcs_set_radial_gradient_func (hb_paint_funcs_t *funcs,
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* hb_paint_funcs_set_sweep_gradient_func:
|
* hb_paint_funcs_set_sweep_gradient_func:
|
||||||
* @funcs:
|
* @funcs: A paint functions struct
|
||||||
* @func: (closure user_data) (destroy destroy) (scope notified):
|
* @func: (closure user_data) (destroy destroy) (scope notified): The sweep-gradient callback
|
||||||
* @user_data:
|
* @user_data: Data to pass to @func
|
||||||
* @destroy: (nullable)
|
* @destroy: (nullable): Function to call when @user_data is no longer needed
|
||||||
|
*
|
||||||
|
* Sets the sweep-gradient callback on the paint functions struct.
|
||||||
|
*
|
||||||
|
* Since: REPLACEME
|
||||||
*/
|
*/
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_funcs_set_sweep_gradient_func (hb_paint_funcs_t *funcs,
|
hb_paint_funcs_set_sweep_gradient_func (hb_paint_funcs_t *funcs,
|
||||||
|
@ -518,10 +579,14 @@ hb_paint_funcs_set_sweep_gradient_func (hb_paint_funcs_t *funcs,
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* hb_paint_funcs_set_push_group_func:
|
* hb_paint_funcs_set_push_group_func:
|
||||||
* @funcs:
|
* @funcs: A paint functions struct
|
||||||
* @func: (closure user_data) (destroy destroy) (scope notified):
|
* @func: (closure user_data) (destroy destroy) (scope notified): The push-group callback
|
||||||
* @user_data:
|
* @user_data: Data to pass to @func
|
||||||
* @destroy: (nullable)
|
* @destroy: (nullable): Function to call when @user_data is no longer needed
|
||||||
|
*
|
||||||
|
* Sets the push-group callback on the paint functions struct.
|
||||||
|
*
|
||||||
|
* Since: REPLACEME
|
||||||
*/
|
*/
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_funcs_set_push_group_func (hb_paint_funcs_t *funcs,
|
hb_paint_funcs_set_push_group_func (hb_paint_funcs_t *funcs,
|
||||||
|
@ -531,10 +596,14 @@ hb_paint_funcs_set_push_group_func (hb_paint_funcs_t *funcs,
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* hb_paint_funcs_set_pop_group_func:
|
* hb_paint_funcs_set_pop_group_func:
|
||||||
* @funcs:
|
* @funcs: A paint functions struct
|
||||||
* @func: (closure user_data) (destroy destroy) (scope notified):
|
* @func: (closure user_data) (destroy destroy) (scope notified): The pop-group callback
|
||||||
* @user_data:
|
* @user_data: Data to pass to @func
|
||||||
* @destroy: (nullable)
|
* @destroy: (nullable): Function to call when @user_data is no longer needed
|
||||||
|
*
|
||||||
|
* Sets the pop-group callback on the paint functions struct.
|
||||||
|
*
|
||||||
|
* Since: REPLACEME
|
||||||
*/
|
*/
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_funcs_set_pop_group_func (hb_paint_funcs_t *funcs,
|
hb_paint_funcs_set_pop_group_func (hb_paint_funcs_t *funcs,
|
||||||
|
@ -557,7 +626,8 @@ hb_paint_push_clip_glyph (hb_paint_funcs_t *funcs, void *paint_data,
|
||||||
|
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_push_clip_rect (hb_paint_funcs_t *funcs, void *paint_data,
|
hb_paint_push_clip_rect (hb_paint_funcs_t *funcs, void *paint_data,
|
||||||
float xmin, float ymin, float xmax, float ymax);
|
float xmin, float ymin,
|
||||||
|
float xmax, float ymax);
|
||||||
|
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_pop_clip (hb_paint_funcs_t *funcs, void *paint_data);
|
hb_paint_pop_clip (hb_paint_funcs_t *funcs, void *paint_data);
|
||||||
|
@ -577,8 +647,10 @@ hb_paint_linear_gradient (hb_paint_funcs_t *funcs, void *paint_data,
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_radial_gradient (hb_paint_funcs_t *funcs, void *paint_data,
|
hb_paint_radial_gradient (hb_paint_funcs_t *funcs, void *paint_data,
|
||||||
hb_color_line_t *color_line,
|
hb_color_line_t *color_line,
|
||||||
float x0, float y0, float r0,
|
float x0, float y0,
|
||||||
float x1, float y1, float r1);
|
float r0,
|
||||||
|
float x1, float y1,
|
||||||
|
float r1);
|
||||||
|
|
||||||
HB_EXTERN void
|
HB_EXTERN void
|
||||||
hb_paint_sweep_gradient (hb_paint_funcs_t *funcs, void *paint_data,
|
hb_paint_sweep_gradient (hb_paint_funcs_t *funcs, void *paint_data,
|
||||||
|
|
Loading…
Reference in New Issue