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Add gsk_path_builder_add_rounded_rect

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For now, this is using gsk_path_builder_svg_arc_to
to approximate elliptical arcs.
This commit is contained in:
Matthias Clasen 2023-08-12 15:34:54 -04:00
parent fa4ad1590d
commit 11f48f3c5b
2 changed files with 73 additions and 0 deletions
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70
gsk/gskpathbuilder.c
View File

@ -470,6 +470,76 @@ gsk_path_builder_add_rect (GskPathBuilder *self,
self->current_point = current;
}
/**
* gsk_path_builder_add_rounded_rect:
* @self: a #GskPathBuilder
* @rect: the rounded rect
*
* Adds @rect as a new contour to the path built in @self.
**/
void
gsk_path_builder_add_rounded_rect (GskPathBuilder *self,
const GskRoundedRect *rect)
{
graphene_point_t current;
g_return_if_fail (self != NULL);
g_return_if_fail (rect != NULL);
current = self->current_point;
gsk_path_builder_move_to (self,
rect->bounds.origin.x + rect->corner[GSK_CORNER_TOP_LEFT].width,
rect->bounds.origin.y);
/* top */
gsk_path_builder_line_to (self,
rect->bounds.origin.x + rect->bounds.size.width - rect->corner[GSK_CORNER_TOP_RIGHT].width,
rect->bounds.origin.y);
/* topright corner */
gsk_path_builder_svg_arc_to (self,
rect->corner[GSK_CORNER_TOP_RIGHT].width,
rect->corner[GSK_CORNER_TOP_RIGHT].height,
0, FALSE, TRUE,
rect->bounds.origin.x + rect->bounds.size.width,
rect->bounds.origin.y + rect->corner[GSK_CORNER_TOP_RIGHT].height);
/* right */
gsk_path_builder_line_to (self,
rect->bounds.origin.x + rect->bounds.size.width,
rect->bounds.origin.y + rect->bounds.size.height - rect->corner[GSK_CORNER_BOTTOM_RIGHT].height);
/* bottomright corner */
gsk_path_builder_svg_arc_to (self,
rect->corner[GSK_CORNER_BOTTOM_RIGHT].width,
rect->corner[GSK_CORNER_BOTTOM_RIGHT].height,
0, FALSE, TRUE,
rect->bounds.origin.x + rect->bounds.size.width - rect->corner[GSK_CORNER_BOTTOM_RIGHT].width,
rect->bounds.origin.y + rect->bounds.size.height);
/* bottom */
gsk_path_builder_line_to (self,
rect->bounds.origin.x + rect->corner[GSK_CORNER_BOTTOM_LEFT].width,
rect->bounds.origin.y + rect->bounds.size.height);
/* bottomleft corner */
gsk_path_builder_svg_arc_to (self,
rect->corner[GSK_CORNER_BOTTOM_LEFT].width,
rect->corner[GSK_CORNER_BOTTOM_LEFT].height,
0, FALSE, TRUE,
rect->bounds.origin.x,
rect->bounds.origin.y + rect->bounds.size.height - rect->corner[GSK_CORNER_BOTTOM_LEFT].height);
/* left */
gsk_path_builder_line_to (self,
rect->bounds.origin.x,
rect->bounds.origin.y + rect->corner[GSK_CORNER_TOP_LEFT].height);
/* topleft corner */
gsk_path_builder_svg_arc_to (self,
rect->corner[GSK_CORNER_TOP_LEFT].width,
rect->corner[GSK_CORNER_TOP_LEFT].height,
0, FALSE, TRUE,
rect->bounds.origin.x + rect->corner[GSK_CORNER_TOP_LEFT].width,
rect->bounds.origin.y);
/* done */
gsk_path_builder_close (self);
self->current_point = current;
}
static gboolean
circle_contour_curve (const graphene_point_t pts[4],
gpointer data)

3
gsk/gskpathbuilder.h
View File

@ -65,6 +65,9 @@ GDK_AVAILABLE_IN_4_14
void gsk_path_builder_add_rect (GskPathBuilder *self,
const graphene_rect_t *rect);
GDK_AVAILABLE_IN_4_14
void gsk_path_builder_add_rounded_rect (GskPathBuilder *self,
const GskRoundedRect *rect);
GDK_AVAILABLE_IN_4_14
void gsk_path_builder_add_circle (GskPathBuilder *self,
const graphene_point_t *center,
float radius);