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contour: Special-case rects for strokes

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In many cases, the outline of a rectangle is just
two rectangles.
This commit is contained in:
Matthias Clasen
2020-12-05 14:20:17 -05:00
parent 068838eac4
commit 31fe02e449
1 changed files with 32 additions and 0 deletions
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32
gsk/gskcontour.c
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@@ -495,11 +495,43 @@ gsk_rect_contour_get_stroke_bounds (const GskContour *contour,
return TRUE;
}
static gboolean
stroke_is_simple (GskStroke *stroke)
{
if (stroke->line_join != GSK_LINE_JOIN_MITER &&
stroke->line_join != GSK_LINE_JOIN_MITER_CLIP)
return FALSE;
if (stroke->miter_limit < 1.5)
return FALSE;
if (stroke->dash_length != 0)
return FALSE;
return TRUE;
}
static void
gsk_rect_contour_add_stroke (const GskContour *contour,
GskPathBuilder *builder,
GskStroke *stroke)
{
const GskRectContour *self = (const GskRectContour *) contour;
if (stroke_is_simple (stroke))
{
graphene_rect_t rect;
graphene_rect_init (&rect, self->x, self->y, self->width, self->height);
graphene_rect_inset (&rect, stroke->line_width / 2, stroke->line_width / 2);
gsk_path_builder_add_rect (builder, &rect);
graphene_rect_inset (&rect, - stroke->line_width, - stroke->line_width);
rect.origin.x += rect.size.width;
rect.size.width = - rect.size.width;
gsk_path_builder_add_rect (builder, &rect);
}
}
static const GskContourClass GSK_RECT_CONTOUR_CLASS =