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gsk: Add gsk_path_builder_add_layout

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This api makes it easy to turn text into a path that
can be further manipulated. The implementation currently
goes via cairo.
This commit is contained in:
Matthias Clasen
2020-12-27 00:59:02 -05:00
committed by Benjamin Otte
parent 9ef17b9b32
commit 5c3a5761b4
2 changed files with 36 additions and 0 deletions
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33
gsk/gskpathbuilder.c
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@@ -950,3 +950,36 @@ gsk_path_builder_svg_arc_to (GskPathBuilder *self,
t);
}
}
/**
* gsk_path_builder_add_layout:
* @self: a #GskPathBuilder
* @layout: the pango layout to add
*
* Adds the outlines for the glyphs in @layout to
* the builder.
*/
void
gsk_path_builder_add_layout (GskPathBuilder *self,
PangoLayout *layout)
{
cairo_surface_t *surface;
cairo_t *cr;
cairo_path_t *cairo_path;
GskPath *path;
surface = cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, NULL);
cr = cairo_create (surface);
pango_cairo_layout_path (cr, layout);
cairo_path = cairo_copy_path (cr);
path = gsk_path_new_from_cairo (cairo_path);
gsk_path_builder_add_path (self, path);
gsk_path_unref (path);
cairo_path_destroy (cairo_path);
cairo_destroy (cr);
cairo_surface_destroy (surface);
}

3
gsk/gskpathbuilder.h
View File

@@ -53,6 +53,9 @@ GDK_AVAILABLE_IN_ALL
void gsk_path_builder_add_path (GskPathBuilder *self,
GskPath *path);
GDK_AVAILABLE_IN_ALL
void gsk_path_builder_add_layout (GskPathBuilder *self,
PangoLayout *layout);
GDK_AVAILABLE_IN_ALL
void gsk_path_builder_add_rect (GskPathBuilder *self,
const graphene_rect_t *rect);
GDK_AVAILABLE_IN_ALL