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GskRenderNode: Fix fallback border drawing

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This commit is contained in:
Timm Bäder 2017-08-29 11:48:13 +02:00
parent 27e1260104
commit c18d2872f2
1 changed files with 40 additions and 44 deletions
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84
gsk/gskrendernodeimpl.c
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@ -464,56 +464,52 @@ gsk_border_node_draw (GskRenderNode *node,
else
{
const graphene_rect_t *bounds = &self->outline.bounds;
/* distance to center "line":
* +-------------------------+
* | |
* | |
* | ---this-line--- |
* | |
* | |
* +-------------------------+
* That line is equidistant from all sides. It's either horiontal
* or vertical, depending on if the rect is wider or taller.
* We use the 4 sides spanned up by connecting the line to the corner
* points to color the regions of the rectangle differently.
* Note that the call to cairo_fill() will add the potential final
* segment by closing the path, so we don't have to care.
*/
float dst = MIN (bounds->size.width, bounds->size.height) / 2.0;
cairo_clip (cr);
/* top */
cairo_move_to (cr, bounds->origin.x + dst, bounds->origin.y + dst);
cairo_rel_line_to (cr, - dst, - dst);
cairo_rel_line_to (cr, bounds->size.width, 0);
cairo_rel_line_to (cr, - dst, dst);
gdk_cairo_set_source_rgba (cr, &self->border_color[0]);
cairo_fill (cr);
/* Top */
if (self->border_width[0] > 0)
{
cairo_move_to (cr, bounds->origin.x, bounds->origin.y);
cairo_rel_line_to (cr, self->border_width[3], self->border_width[0]);
cairo_rel_line_to (cr, bounds->size.width - self->border_width[3] - self->border_width[1], 0);
cairo_rel_line_to (cr, self->border_width[1], - self->border_width[0]);
gdk_cairo_set_source_rgba (cr, &self->border_color[0]);
cairo_fill (cr);
}
/* right */
cairo_move_to (cr, bounds->origin.x + bounds->size.width - dst, bounds->origin.y + dst);
cairo_rel_line_to (cr, dst, - dst);
cairo_rel_line_to (cr, 0, bounds->size.height);
cairo_rel_line_to (cr, - dst, - dst);
gdk_cairo_set_source_rgba (cr, &self->border_color[1]);
cairo_fill (cr);
/* Right */
if (self->border_width[1] > 0)
{
cairo_move_to (cr, bounds->origin.x + bounds->size.width, bounds->origin.y);
cairo_rel_line_to (cr, - self->border_width[1], self->border_width[0]);
cairo_rel_line_to (cr, 0, bounds->size.height - self->border_width[0] - self->border_width[2]);
cairo_rel_line_to (cr, self->border_width[1], self->border_width[2]);
gdk_cairo_set_source_rgba (cr, &self->border_color[1]);
cairo_fill (cr);
}
/* bottom */
cairo_move_to (cr, bounds->origin.x + bounds->size.width - dst, bounds->origin.y + bounds->size.height - dst);
cairo_rel_line_to (cr, dst, dst);
cairo_rel_line_to (cr, - bounds->size.width, 0);
cairo_rel_line_to (cr, dst, - dst);
gdk_cairo_set_source_rgba (cr, &self->border_color[2]);
cairo_fill (cr);
/* Bottom */
if (self->border_width[2] > 0)
{
cairo_move_to (cr, bounds->origin.x, bounds->origin.y + bounds->size.height);
cairo_rel_line_to (cr, self->border_width[3], - self->border_width[2]);
cairo_rel_line_to (cr, bounds->size.width - self->border_width[3] - self->border_width[1], 0);
cairo_rel_line_to (cr, self->border_width[1], self->border_width[2]);
gdk_cairo_set_source_rgba (cr, &self->border_color[2]);
cairo_fill (cr);
}
/* left */
cairo_move_to (cr, bounds->origin.x + dst, bounds->origin.y + bounds->size.height - dst);
cairo_rel_line_to (cr, - dst, dst);
cairo_rel_line_to (cr, 0, - bounds->size.height);
cairo_rel_line_to (cr, dst, dst);
gdk_cairo_set_source_rgba (cr, &self->border_color[3]);
cairo_fill (cr);
/* Left */
if (self->border_width[3] > 0)
{
cairo_move_to (cr, bounds->origin.x, bounds->origin.y);
cairo_rel_line_to (cr, self->border_width[3], self->border_width[0]);
cairo_rel_line_to (cr, 0, bounds->size.height - self->border_width[0] - self->border_width[2]);
cairo_rel_line_to (cr, - self->border_width[3], self->border_width[2]);
gdk_cairo_set_source_rgba (cr, &self->border_color[3]);
cairo_fill (cr);
}
}
cairo_restore (cr);