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/* The Cairo CSS Drawing Library.
* Copyright (C) 2008 Robert Staudinger
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "ccss/ccss-style-priv.h"
#include "ccss-gtk-style.h"
/**
* ccss_style_draw_gap:
* @self: a ccss_style_t.
* @cr: the target to draw onto.
* @x: the starting x coordinate.
* @y: the starting y coordinate.
* @width: width of the outline to draw.
* @height: height of the outline to draw.
* @gap_side: side in which to leave the gap.
* @gap_start: starting position of the gap.
* @gap_width: width of the gap.
*
* Draw a rectangle with gap using this style instance.
**/
void
ccss_style_draw_gap (ccss_style_t const *self,
cairo_t *cr,
int32_t x,
int32_t y,
int32_t width,
int32_t height,
GtkPositionType gap_side,
int32_t gap_start,
int32_t gap_width)
{
ccss_border_stroke_t bottom, left, right, top;
ccss_border_join_t const *bl;
ccss_border_join_t const *br;
ccss_border_join_t const *tl;
ccss_border_join_t const *tr;
ccss_background_attachment_t const *bg_attachment;
ccss_color_t const *bg_color;
ccss_background_image_t const *bg_image;
ccss_background_position_t const *bg_position;
ccss_background_repeat_t const *bg_repeat;
ccss_background_size_t const *bg_size;
ccss_border_join_t bottom_left;
ccss_border_join_t bottom_right;
ccss_border_join_t top_left;
ccss_border_join_t top_right;
int32_t l, t, w, h;
ccss_style_gather_outline (self, &bottom, &left, &right, &top,
&bl, &br, &tl, &tr);
ccss_style_gather_background (self, &bg_attachment, &bg_color, &bg_image,
&bg_position, &bg_repeat, &bg_size);
/* The rounding radii will have to be adjusted for certain gap
* positions, so we work on a copied set of them. */
bottom_left = *bl;
bottom_right = *br;
top_left = *tl;
top_right = *tr;
switch (gap_side) {
case GTK_POS_LEFT:
if (bottom_left.radius > height - gap_start - gap_width)
bottom_left.radius = height - gap_start - gap_width;
if (top_left.radius > gap_start)
top_left.radius = gap_start;
break;
case GTK_POS_TOP:
if (top_left.radius > gap_start)
top_left.radius = gap_start;
if (top_right.radius > width - gap_start - gap_width)
top_right.radius = width - gap_start - gap_width;
break;
case GTK_POS_RIGHT:
if (top_right.radius > gap_start)
top_right.radius = gap_start;
if (bottom_right.radius > height - gap_start - gap_width)
bottom_right.radius = height - gap_start - gap_width;
break;
case GTK_POS_BOTTOM:
if (bottom_left.radius > gap_start)
bottom_left.radius = gap_start;
if (bottom_right.radius > width - gap_start - gap_width)
bottom_right.radius = width - gap_start - gap_width;
break;
default:
g_assert_not_reached ();
return; /* prevent error building without assertions */
}
if (top_left.radius < 0) top_left.radius = 0;
if (top_right.radius < 0) top_right.radius = 0;
if (bottom_right.radius < 0) bottom_right.radius = 0;
if (bottom_left.radius < 0) bottom_left.radius = 0;
ccss_border_clamp_radii (x, y, width, height,
&top_left.radius, &top_right.radius,
&bottom_right.radius, &bottom_left.radius);
ccss_border_path (&left, &top_left,
&top, &top_right,
&right, &bottom_right,
&bottom, &bottom_left,
cr, x, y, width, height);
/* FIXME: background size is calculated against allocation
* when using `fixed'. */
if (CCSS_BACKGROUND_FIXED == bg_attachment->attachment) {
l = self->viewport_x;
t = self->viewport_y;
w = self->viewport_width;
h = self->viewport_height;
} else {
l = x;
t = y;
w = width;
h = height;
}
ccss_background_fill (bg_attachment, bg_color, bg_image, bg_position,
bg_repeat, bg_size, cr, l, t, w, h);
cairo_new_path (cr);
/* Drawing functions start at bottom-left corder and
* proceed clock-wise. */
switch (gap_side) {
case GTK_POS_LEFT:
/* Draw gap only if it's not over the whole border. */
if (gap_start > y || gap_width < height) {
/* Rounding reaches until start of gap?
* With Gtk+ the portion following the gap might not be visible. */
if (bottom_left.radius < height - gap_start - gap_width &&
gap_start + gap_width < height) {
ccss_border_draw (&left, NULL, NULL, NULL,
NULL, NULL, NULL, &bottom_left,
CCSS_BORDER_VISIBILITY_HIDE_BOTTOM_LEFT |
CCSS_BORDER_ROUNDING_UNRESTRICTED,
cr, x, y + gap_start + gap_width - 1,
0, height - gap_start - gap_width);
}
/* Rounding reaches until start of gap? */
if (top_left.radius < gap_start) {
ccss_border_draw (&left, &top_left, NULL, NULL,
NULL, NULL, NULL, NULL,
CCSS_BORDER_VISIBILITY_HIDE_LEFT_TOP |
CCSS_BORDER_ROUNDING_UNRESTRICTED,
cr, x, y, 0, gap_start + 1);
}
}
ccss_border_draw (&left, &top_left,
&top, &top_right,
&right, &bottom_right,
&bottom, &bottom_left,
CCSS_BORDER_VISIBILITY_HIDE_LEFT,
cr, x, y, width, height);
break;
case GTK_POS_TOP:
/* Draw gap only if it's not over the whole border. */
if (gap_start > x || gap_width < width) {
/* Rounding reaches until start of gap? */
if (top_left.radius < gap_start) {
ccss_border_draw (NULL, &top_left, &top, NULL,
NULL, NULL, NULL, NULL,
CCSS_BORDER_VISIBILITY_HIDE_LEFT_TOP |
CCSS_BORDER_ROUNDING_UNRESTRICTED,
cr, x, y, gap_start + 1, 0);
}
/* Rounding reaches until start of gap?
* With Gtk+ the portion following the gap might not be visible. */
if (top_right.radius < width - gap_start - gap_width &&
gap_start + gap_width < width) {
ccss_border_draw (NULL, NULL, &top, &top_right,
NULL, NULL, NULL, NULL,
CCSS_BORDER_VISIBILITY_HIDE_TOP_RIGHT |
CCSS_BORDER_ROUNDING_UNRESTRICTED,
cr, x + gap_start + gap_width - 1, y,
width - gap_start - gap_width, 0);
}
}
ccss_border_draw (&left, &top_left,
&top, &top_right,
&right, &bottom_right,
&bottom, &bottom_left,
CCSS_BORDER_VISIBILITY_HIDE_TOP,
cr, x, y, width, height);
break;
case GTK_POS_RIGHT:
/* Draw gap only if it's not over the whole border. */
if (gap_start > y || gap_width < height) {
/* Rounding reaches until start of gap? */
if (top_right.radius < gap_start) {
ccss_border_draw (NULL, NULL, NULL, &top_right,
&right, NULL, NULL, NULL,
CCSS_BORDER_VISIBILITY_HIDE_TOP_RIGHT |
CCSS_BORDER_ROUNDING_UNRESTRICTED,
cr, x + width, y, 0, gap_start + 1);
}
/* Rounding reaches until start of gap?
* With Gtk+ the portion following the gap might not be visible. */
if (bottom_right.radius < height - gap_start - gap_width &&
gap_start + gap_width < height) {
ccss_border_draw (NULL, NULL, NULL, NULL,
&right, &bottom_right, NULL, NULL,
CCSS_BORDER_VISIBILITY_HIDE_RIGHT_BOTTOM |
CCSS_BORDER_ROUNDING_UNRESTRICTED,
cr, x + width, y + gap_start + gap_width - 1,
0, height - gap_start - gap_width);
}
}
ccss_border_draw (&left, &top_left,
&top, &top_right,
&right, &bottom_right,
&bottom, &bottom_left,
CCSS_BORDER_VISIBILITY_HIDE_RIGHT,
cr, x, y, width, height);
break;
case GTK_POS_BOTTOM:
/* Draw gap only if it's not over the whole border. */
if (gap_start > x || gap_width < width) {
/* Rounding reaches until start of gap? &&
* With Gtk+ the portion following the gap might not be visible. */
if (bottom_right.radius < width - gap_start - gap_width &&
gap_start + gap_width < width) {
ccss_border_draw (NULL, NULL, NULL, NULL,
NULL, &bottom_right, &bottom, NULL,
CCSS_BORDER_VISIBILITY_HIDE_RIGHT_BOTTOM |
CCSS_BORDER_ROUNDING_UNRESTRICTED,
cr, x + gap_start + gap_width - 1, y + height,
width - gap_start - gap_width, 0);
}
/* Rounding reaches until start of gap? */
if (bottom_left.radius < gap_start) {
ccss_border_draw (NULL, NULL, NULL, NULL,
NULL, NULL, &bottom, &bottom_left,
CCSS_BORDER_VISIBILITY_HIDE_BOTTOM_LEFT |
CCSS_BORDER_ROUNDING_UNRESTRICTED,
cr, x, y + height, gap_start + 1, 0);
}
}
ccss_border_draw (&left, &top_left,
&top, &top_right,
&right, &bottom_right,
&bottom, &bottom_left,
CCSS_BORDER_VISIBILITY_HIDE_BOTTOM,
cr, x, y, width, height);
break;
default:
g_assert_not_reached ();
return; /* prevent error building without assertions */
}
}
/**
* ccss_style_draw_polygon:
* @self: a ccss_style_t.
* @cr: the target to draw onto.
* @points: an array of #GdkPoint<!-- -->s.
* @n_points: length of @points.
* @fill: %true if the polygon should be filled.
*
* Draw a rectangle with gap using this style instance.
**/
void
ccss_style_draw_polygon (ccss_style_t const *self,
cairo_t *cr,
GdkPoint *points,
int32_t n_points,
bool fill)
{
}
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