d9f05aa3f9
We are only ever drawing axis-aligned quarter arcs here. By caching these paths, sincos drops from the profiles for drawing-heavy workloads.
724 lines
27 KiB
C
724 lines
27 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2011 Benjamin Otte <otte@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkroundedboxprivate.h"
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#include "gtkcsscornervalueprivate.h"
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#include "gtkcsstypesprivate.h"
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#include "gtkstylecontextprivate.h"
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#include <string.h>
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/**
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* _gtk_rounded_box_init_rect:
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* @box: box to initialize
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* @x: x coordinate of box
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* @y: y coordinate of box
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* @width: width of box
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* @height: height of box
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*
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* Initializes the given @box to represent the given rectangle.
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* The
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**/
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void
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_gtk_rounded_box_init_rect (GtkRoundedBox *box,
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double x,
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double y,
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double width,
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double height)
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{
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memset (box, 0, sizeof (GtkRoundedBox));
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box->box.x = x;
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box->box.y = y;
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box->box.width = width;
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box->box.height = height;
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}
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/* clamp border radius, following CSS specs */
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static void
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gtk_rounded_box_clamp_border_radius (GtkRoundedBox *box)
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{
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gdouble factor = 1.0;
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/* note: division by zero leads to +INF, which is > factor, so will be ignored */
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factor = MIN (factor, box->box.width / (box->corner[GTK_CSS_TOP_LEFT].horizontal +
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box->corner[GTK_CSS_TOP_RIGHT].horizontal));
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factor = MIN (factor, box->box.height / (box->corner[GTK_CSS_TOP_RIGHT].vertical +
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box->corner[GTK_CSS_BOTTOM_RIGHT].vertical));
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factor = MIN (factor, box->box.width / (box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal +
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box->corner[GTK_CSS_BOTTOM_LEFT].horizontal));
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factor = MIN (factor, box->box.height / (box->corner[GTK_CSS_TOP_LEFT].vertical +
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box->corner[GTK_CSS_BOTTOM_LEFT].vertical));
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box->corner[GTK_CSS_TOP_LEFT].horizontal *= factor;
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box->corner[GTK_CSS_TOP_LEFT].vertical *= factor;
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box->corner[GTK_CSS_TOP_RIGHT].horizontal *= factor;
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box->corner[GTK_CSS_TOP_RIGHT].vertical *= factor;
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box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal *= factor;
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box->corner[GTK_CSS_BOTTOM_RIGHT].vertical *= factor;
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box->corner[GTK_CSS_BOTTOM_LEFT].horizontal *= factor;
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box->corner[GTK_CSS_BOTTOM_LEFT].vertical *= factor;
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}
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static void
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_gtk_rounded_box_apply_border_radius (GtkRoundedBox *box,
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GtkCssValue **corner,
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GtkJunctionSides junction)
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{
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if (corner[GTK_CSS_TOP_LEFT] && (junction & GTK_JUNCTION_CORNER_TOPLEFT) == 0)
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{
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box->corner[GTK_CSS_TOP_LEFT].horizontal = _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_LEFT],
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box->box.width);
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box->corner[GTK_CSS_TOP_LEFT].vertical = _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_LEFT],
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box->box.height);
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}
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if (corner[GTK_CSS_TOP_RIGHT] && (junction & GTK_JUNCTION_CORNER_TOPRIGHT) == 0)
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{
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box->corner[GTK_CSS_TOP_RIGHT].horizontal = _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_RIGHT],
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box->box.width);
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box->corner[GTK_CSS_TOP_RIGHT].vertical = _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_RIGHT],
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box->box.height);
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}
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if (corner[GTK_CSS_BOTTOM_RIGHT] && (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT) == 0)
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{
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box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal = _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_RIGHT],
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box->box.width);
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box->corner[GTK_CSS_BOTTOM_RIGHT].vertical = _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_RIGHT],
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box->box.height);
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}
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if (corner[GTK_CSS_BOTTOM_LEFT] && (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT) == 0)
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{
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box->corner[GTK_CSS_BOTTOM_LEFT].horizontal = _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_LEFT],
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box->box.width);
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box->corner[GTK_CSS_BOTTOM_LEFT].vertical = _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_LEFT],
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box->box.height);
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}
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gtk_rounded_box_clamp_border_radius (box);
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}
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void
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_gtk_rounded_box_apply_border_radius_for_style (GtkRoundedBox *box,
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GtkCssStyle *style,
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GtkJunctionSides junction)
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{
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GtkCssValue *corner[4];
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corner[GTK_CSS_TOP_LEFT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS);
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corner[GTK_CSS_TOP_RIGHT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS);
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corner[GTK_CSS_BOTTOM_LEFT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS);
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corner[GTK_CSS_BOTTOM_RIGHT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS);
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_gtk_rounded_box_apply_border_radius (box, corner, junction);
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}
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void
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_gtk_rounded_box_apply_outline_radius_for_style (GtkRoundedBox *box,
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GtkCssStyle *style,
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GtkJunctionSides junction)
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{
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GtkCssValue *corner[4];
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corner[GTK_CSS_TOP_LEFT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_TOP_LEFT_RADIUS);
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corner[GTK_CSS_TOP_RIGHT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_TOP_RIGHT_RADIUS);
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corner[GTK_CSS_BOTTOM_LEFT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_BOTTOM_LEFT_RADIUS);
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corner[GTK_CSS_BOTTOM_RIGHT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_BOTTOM_RIGHT_RADIUS);
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_gtk_rounded_box_apply_border_radius (box, corner, junction);
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}
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static void
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gtk_css_border_radius_grow (GtkRoundedBoxCorner *corner,
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double horizontal,
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double vertical)
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{
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if (corner->horizontal)
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corner->horizontal += horizontal;
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if (corner->vertical)
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corner->vertical += vertical;
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if (corner->horizontal <= 0 || corner->vertical <= 0)
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{
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corner->horizontal = 0;
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corner->vertical = 0;
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}
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}
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void
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_gtk_rounded_box_grow (GtkRoundedBox *box,
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double top,
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double right,
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double bottom,
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double left)
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{
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if (box->box.width + left + right < 0)
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{
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box->box.x -= left * box->box.width / (left + right);
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box->box.width = 0;
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}
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else
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{
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box->box.x -= left;
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box->box.width += left + right;
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}
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if (box->box.height + bottom + top < 0)
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{
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box->box.y -= top * box->box.height / (top + bottom);
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box->box.height = 0;
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}
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else
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{
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box->box.y -= top;
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box->box.height += top + bottom;
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}
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gtk_css_border_radius_grow (&box->corner[GTK_CSS_TOP_LEFT], left, top);
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gtk_css_border_radius_grow (&box->corner[GTK_CSS_TOP_RIGHT], right, bottom);
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gtk_css_border_radius_grow (&box->corner[GTK_CSS_BOTTOM_RIGHT], right, top);
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gtk_css_border_radius_grow (&box->corner[GTK_CSS_BOTTOM_LEFT], left, bottom);
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}
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void
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_gtk_rounded_box_shrink (GtkRoundedBox *box,
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double top,
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double right,
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double bottom,
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double left)
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{
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_gtk_rounded_box_grow (box, -top, -right, -bottom, -left);
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}
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void
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_gtk_rounded_box_move (GtkRoundedBox *box,
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double dx,
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double dy)
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{
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box->box.x += dx;
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box->box.y += dy;
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}
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typedef struct {
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double angle1;
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double angle2;
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gboolean negative;
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} Arc;
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static guint
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arc_path_hash (Arc *arc)
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{
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return g_double_hash (&arc->angle1) ^ g_double_hash (&arc->angle2) ^ arc->negative;
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}
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static gboolean
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arc_path_equal (Arc *arc1,
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Arc *arc2)
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{
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return arc1->angle1 == arc2->angle1 &&
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arc1->angle2 == arc2->angle2 &&
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arc1->negative == arc2->negative;
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}
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/* We need the path to start with a line-to */
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static cairo_path_t *
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fixup_path (cairo_path_t *path)
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{
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cairo_path_data_t *data;
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data = &path->data[0];
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if (data->header.type == CAIRO_PATH_MOVE_TO)
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data->header.type = CAIRO_PATH_LINE_TO;
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return path;
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}
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static void
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append_arc (cairo_t *cr, double angle1, double angle2, gboolean negative)
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{
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static GHashTable *arc_path_cache;
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Arc key;
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cairo_path_t *arc;
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key.angle1 = angle1;
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key.angle2 = angle2;
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key.negative = negative;
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if (arc_path_cache == NULL)
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arc_path_cache = g_hash_table_new_full ((GHashFunc)arc_path_hash,
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(GEqualFunc)arc_path_equal,
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g_free, (GDestroyNotify)cairo_path_destroy);
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arc = g_hash_table_lookup (arc_path_cache, &key);
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if (arc == NULL)
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{
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cairo_surface_t *surface;
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cairo_t *tmp;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
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tmp = cairo_create (surface);
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if (negative)
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cairo_arc_negative (tmp, 0.0, 0.0, 1.0, angle1, angle2);
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else
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cairo_arc (tmp, 0.0, 0.0, 1.0, angle1, angle2);
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arc = fixup_path (cairo_copy_path (tmp));
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g_hash_table_insert (arc_path_cache, g_memdup (&key, sizeof (key)), arc);
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cairo_destroy (tmp);
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cairo_surface_destroy (surface);
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}
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cairo_append_path (cr, arc);
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}
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static void
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_cairo_ellipsis (cairo_t *cr,
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double xc, double yc,
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double xradius, double yradius,
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double angle1, double angle2)
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{
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cairo_matrix_t save;
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if (xradius <= 0.0 || yradius <= 0.0)
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{
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cairo_line_to (cr, xc, yc);
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return;
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}
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cairo_get_matrix (cr, &save);
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cairo_translate (cr, xc, yc);
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cairo_scale (cr, xradius, yradius);
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append_arc (cr, angle1, angle2, FALSE);
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cairo_set_matrix (cr, &save);
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}
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static void
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_cairo_ellipsis_negative (cairo_t *cr,
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double xc, double yc,
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double xradius, double yradius,
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double angle1, double angle2)
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{
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cairo_matrix_t save;
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if (xradius <= 0.0 || yradius <= 0.0)
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{
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cairo_line_to (cr, xc, yc);
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return;
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}
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cairo_get_matrix (cr, &save);
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cairo_translate (cr, xc, yc);
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cairo_scale (cr, xradius, yradius);
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append_arc (cr, angle1, angle2, TRUE);
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cairo_set_matrix (cr, &save);
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}
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void
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_gtk_rounded_box_path (const GtkRoundedBox *box,
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cairo_t *cr)
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{
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cairo_new_sub_path (cr);
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_cairo_ellipsis (cr,
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box->box.x + box->corner[GTK_CSS_TOP_LEFT].horizontal,
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box->box.y + box->corner[GTK_CSS_TOP_LEFT].vertical,
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box->corner[GTK_CSS_TOP_LEFT].horizontal,
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box->corner[GTK_CSS_TOP_LEFT].vertical,
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G_PI, 3 * G_PI_2);
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_cairo_ellipsis (cr,
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box->box.x + box->box.width - box->corner[GTK_CSS_TOP_RIGHT].horizontal,
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box->box.y + box->corner[GTK_CSS_TOP_RIGHT].vertical,
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box->corner[GTK_CSS_TOP_RIGHT].horizontal,
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box->corner[GTK_CSS_TOP_RIGHT].vertical,
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- G_PI_2, 0);
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_cairo_ellipsis (cr,
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box->box.x + box->box.width - box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
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box->box.y + box->box.height - box->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
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box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
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box->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
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0, G_PI_2);
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_cairo_ellipsis (cr,
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box->box.x + box->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
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box->box.y + box->box.height - box->corner[GTK_CSS_BOTTOM_LEFT].vertical,
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box->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
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box->corner[GTK_CSS_BOTTOM_LEFT].vertical,
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G_PI_2, G_PI);
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cairo_close_path (cr);
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}
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double
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_gtk_rounded_box_guess_length (const GtkRoundedBox *box,
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GtkCssSide side)
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{
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double length;
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GtkCssSide before, after;
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before = side;
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after = (side + 1) % 4;
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if (side & 1)
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length = box->box.height
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- box->corner[before].vertical
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- box->corner[after].vertical;
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else
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length = box->box.width
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- box->corner[before].horizontal
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- box->corner[after].horizontal;
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length += G_PI * 0.125 * (box->corner[before].horizontal
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+ box->corner[before].vertical
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+ box->corner[after].horizontal
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+ box->corner[after].vertical);
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return length;
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}
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void
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_gtk_rounded_box_path_side (const GtkRoundedBox *box,
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cairo_t *cr,
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GtkCssSide side)
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{
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switch (side)
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{
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case GTK_CSS_TOP:
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_cairo_ellipsis (cr,
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box->box.x + box->corner[GTK_CSS_TOP_LEFT].horizontal,
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box->box.y + box->corner[GTK_CSS_TOP_LEFT].vertical,
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box->corner[GTK_CSS_TOP_LEFT].horizontal,
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box->corner[GTK_CSS_TOP_LEFT].vertical,
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5 * G_PI_4, 3 * G_PI_2);
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_cairo_ellipsis (cr,
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box->box.x + box->box.width - box->corner[GTK_CSS_TOP_RIGHT].horizontal,
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box->box.y + box->corner[GTK_CSS_TOP_RIGHT].vertical,
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box->corner[GTK_CSS_TOP_RIGHT].horizontal,
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box->corner[GTK_CSS_TOP_RIGHT].vertical,
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- G_PI_2, -G_PI_4);
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break;
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case GTK_CSS_RIGHT:
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_cairo_ellipsis (cr,
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box->box.x + box->box.width - box->corner[GTK_CSS_TOP_RIGHT].horizontal,
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box->box.y + box->corner[GTK_CSS_TOP_RIGHT].vertical,
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box->corner[GTK_CSS_TOP_RIGHT].horizontal,
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box->corner[GTK_CSS_TOP_RIGHT].vertical,
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- G_PI_4, 0);
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_cairo_ellipsis (cr,
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box->box.x + box->box.width - box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
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box->box.y + box->box.height - box->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
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box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
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box->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
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0, G_PI_4);
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break;
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case GTK_CSS_BOTTOM:
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_cairo_ellipsis (cr,
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box->box.x + box->box.width - box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
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box->box.y + box->box.height - box->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
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box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
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box->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
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G_PI_4, G_PI_2);
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_cairo_ellipsis (cr,
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box->box.x + box->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
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box->box.y + box->box.height - box->corner[GTK_CSS_BOTTOM_LEFT].vertical,
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box->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
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box->corner[GTK_CSS_BOTTOM_LEFT].vertical,
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G_PI_2, 3 * G_PI_4);
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break;
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case GTK_CSS_LEFT:
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_cairo_ellipsis (cr,
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box->box.x + box->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
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box->box.y + box->box.height - box->corner[GTK_CSS_BOTTOM_LEFT].vertical,
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box->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
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box->corner[GTK_CSS_BOTTOM_LEFT].vertical,
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3 * G_PI_4, G_PI);
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_cairo_ellipsis (cr,
|
|
box->box.x + box->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
box->box.y + box->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
box->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
box->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
G_PI, 5 * G_PI_4);
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
_gtk_rounded_box_path_top (const GtkRoundedBox *outer,
|
|
const GtkRoundedBox *inner,
|
|
cairo_t *cr)
|
|
{
|
|
double start_angle, middle_angle, end_angle;
|
|
|
|
if (outer->box.y == inner->box.y)
|
|
return;
|
|
|
|
if (outer->box.x == inner->box.x)
|
|
start_angle = G_PI;
|
|
else
|
|
start_angle = 5 * G_PI_4;
|
|
middle_angle = 3 * G_PI_2;
|
|
if (outer->box.x + outer->box.width == inner->box.x + inner->box.width)
|
|
end_angle = 0;
|
|
else
|
|
end_angle = 7 * G_PI_4;
|
|
|
|
cairo_new_sub_path (cr);
|
|
|
|
_cairo_ellipsis (cr,
|
|
outer->box.x + outer->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
outer->box.y + outer->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
outer->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
outer->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
start_angle, middle_angle);
|
|
_cairo_ellipsis (cr,
|
|
outer->box.x + outer->box.width - outer->corner[GTK_CSS_TOP_RIGHT].horizontal,
|
|
outer->box.y + outer->corner[GTK_CSS_TOP_RIGHT].vertical,
|
|
outer->corner[GTK_CSS_TOP_RIGHT].horizontal,
|
|
outer->corner[GTK_CSS_TOP_RIGHT].vertical,
|
|
middle_angle, end_angle);
|
|
|
|
_cairo_ellipsis_negative (cr,
|
|
inner->box.x + inner->box.width - inner->corner[GTK_CSS_TOP_RIGHT].horizontal,
|
|
inner->box.y + inner->corner[GTK_CSS_TOP_RIGHT].vertical,
|
|
inner->corner[GTK_CSS_TOP_RIGHT].horizontal,
|
|
inner->corner[GTK_CSS_TOP_RIGHT].vertical,
|
|
end_angle, middle_angle);
|
|
_cairo_ellipsis_negative (cr,
|
|
inner->box.x + inner->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
inner->box.y + inner->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
inner->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
inner->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
middle_angle, start_angle);
|
|
|
|
cairo_close_path (cr);
|
|
}
|
|
|
|
void
|
|
_gtk_rounded_box_path_right (const GtkRoundedBox *outer,
|
|
const GtkRoundedBox *inner,
|
|
cairo_t *cr)
|
|
{
|
|
double start_angle, middle_angle, end_angle;
|
|
|
|
if (outer->box.x + outer->box.width == inner->box.x + inner->box.width)
|
|
return;
|
|
|
|
if (outer->box.y == inner->box.y)
|
|
start_angle = 3 * G_PI_2;
|
|
else
|
|
start_angle = 7 * G_PI_4;
|
|
middle_angle = 0;
|
|
if (outer->box.y + outer->box.height == inner->box.y + inner->box.height)
|
|
end_angle = G_PI_2;
|
|
else
|
|
end_angle = G_PI_4;
|
|
|
|
cairo_new_sub_path (cr);
|
|
|
|
_cairo_ellipsis (cr,
|
|
outer->box.x + outer->box.width - outer->corner[GTK_CSS_TOP_RIGHT].horizontal,
|
|
outer->box.y + outer->corner[GTK_CSS_TOP_RIGHT].vertical,
|
|
outer->corner[GTK_CSS_TOP_RIGHT].horizontal,
|
|
outer->corner[GTK_CSS_TOP_RIGHT].vertical,
|
|
start_angle, middle_angle);
|
|
_cairo_ellipsis (cr,
|
|
outer->box.x + outer->box.width - outer->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
|
|
outer->box.y + outer->box.height - outer->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
|
|
outer->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
|
|
outer->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
|
|
middle_angle, end_angle);
|
|
|
|
_cairo_ellipsis_negative (cr,
|
|
inner->box.x + inner->box.width - inner->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
|
|
inner->box.y + inner->box.height - inner->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
|
|
inner->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
|
|
inner->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
|
|
end_angle, middle_angle);
|
|
_cairo_ellipsis_negative (cr,
|
|
inner->box.x + inner->box.width - inner->corner[GTK_CSS_TOP_RIGHT].horizontal,
|
|
inner->box.y + inner->corner[GTK_CSS_TOP_RIGHT].vertical,
|
|
inner->corner[GTK_CSS_TOP_RIGHT].horizontal,
|
|
inner->corner[GTK_CSS_TOP_RIGHT].vertical,
|
|
middle_angle, start_angle);
|
|
|
|
cairo_close_path (cr);
|
|
}
|
|
|
|
void
|
|
_gtk_rounded_box_path_bottom (const GtkRoundedBox *outer,
|
|
const GtkRoundedBox *inner,
|
|
cairo_t *cr)
|
|
{
|
|
double start_angle, middle_angle, end_angle;
|
|
|
|
if (outer->box.y + outer->box.height == inner->box.y + inner->box.height)
|
|
return;
|
|
|
|
if (outer->box.x + outer->box.width == inner->box.x + inner->box.width)
|
|
start_angle = 0;
|
|
else
|
|
start_angle = G_PI_4;
|
|
middle_angle = G_PI_2;
|
|
if (outer->box.x == inner->box.x)
|
|
end_angle = G_PI;
|
|
else
|
|
end_angle = 3 * G_PI_4;
|
|
|
|
cairo_new_sub_path (cr);
|
|
|
|
_cairo_ellipsis (cr,
|
|
outer->box.x + outer->box.width - outer->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
|
|
outer->box.y + outer->box.height - outer->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
|
|
outer->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
|
|
outer->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
|
|
start_angle, middle_angle);
|
|
_cairo_ellipsis (cr,
|
|
outer->box.x + outer->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
|
|
outer->box.y + outer->box.height - outer->corner[GTK_CSS_BOTTOM_LEFT].vertical,
|
|
outer->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
|
|
outer->corner[GTK_CSS_BOTTOM_LEFT].vertical,
|
|
middle_angle, end_angle);
|
|
|
|
_cairo_ellipsis_negative (cr,
|
|
inner->box.x + inner->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
|
|
inner->box.y + inner->box.height - inner->corner[GTK_CSS_BOTTOM_LEFT].vertical,
|
|
inner->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
|
|
inner->corner[GTK_CSS_BOTTOM_LEFT].vertical,
|
|
end_angle, middle_angle);
|
|
_cairo_ellipsis_negative (cr,
|
|
inner->box.x + inner->box.width - inner->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
|
|
inner->box.y + inner->box.height - inner->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
|
|
inner->corner[GTK_CSS_BOTTOM_RIGHT].horizontal,
|
|
inner->corner[GTK_CSS_BOTTOM_RIGHT].vertical,
|
|
middle_angle, start_angle);
|
|
|
|
cairo_close_path (cr);
|
|
}
|
|
|
|
void
|
|
_gtk_rounded_box_path_left (const GtkRoundedBox *outer,
|
|
const GtkRoundedBox *inner,
|
|
cairo_t *cr)
|
|
{
|
|
double start_angle, middle_angle, end_angle;
|
|
|
|
if (outer->box.x == inner->box.x)
|
|
return;
|
|
|
|
if (outer->box.y + outer->box.height == inner->box.y + inner->box.height)
|
|
start_angle = G_PI_2;
|
|
else
|
|
start_angle = 3 * G_PI_4;
|
|
middle_angle = G_PI;
|
|
if (outer->box.y == inner->box.y)
|
|
end_angle = 3 * G_PI_2;
|
|
else
|
|
end_angle = 5 * G_PI_4;
|
|
|
|
cairo_new_sub_path (cr);
|
|
|
|
_cairo_ellipsis (cr,
|
|
outer->box.x + outer->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
|
|
outer->box.y + outer->box.height - outer->corner[GTK_CSS_BOTTOM_LEFT].vertical,
|
|
outer->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
|
|
outer->corner[GTK_CSS_BOTTOM_LEFT].vertical,
|
|
start_angle, middle_angle);
|
|
_cairo_ellipsis (cr,
|
|
outer->box.x + outer->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
outer->box.y + outer->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
outer->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
outer->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
middle_angle, end_angle);
|
|
|
|
_cairo_ellipsis_negative (cr,
|
|
inner->box.x + inner->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
inner->box.y + inner->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
inner->corner[GTK_CSS_TOP_LEFT].horizontal,
|
|
inner->corner[GTK_CSS_TOP_LEFT].vertical,
|
|
end_angle, middle_angle);
|
|
_cairo_ellipsis_negative (cr,
|
|
inner->box.x + inner->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
|
|
inner->box.y + inner->box.height - inner->corner[GTK_CSS_BOTTOM_LEFT].vertical,
|
|
inner->corner[GTK_CSS_BOTTOM_LEFT].horizontal,
|
|
inner->corner[GTK_CSS_BOTTOM_LEFT].vertical,
|
|
middle_angle, start_angle);
|
|
|
|
cairo_close_path (cr);
|
|
}
|
|
|
|
void
|
|
_gtk_rounded_box_clip_path (const GtkRoundedBox *box,
|
|
cairo_t *cr)
|
|
{
|
|
cairo_rectangle (cr,
|
|
box->box.x, box->box.y,
|
|
box->box.width, box->box.height);
|
|
}
|
|
|
|
gboolean
|
|
_gtk_rounded_box_intersects_rectangle (const GtkRoundedBox *box,
|
|
gdouble x1,
|
|
gdouble y1,
|
|
gdouble x2,
|
|
gdouble y2)
|
|
{
|
|
if (x2 < box->box.x ||
|
|
y2 < box->box.y ||
|
|
x1 >= box->box.x + box->box.width ||
|
|
y1 >= box->box.y + box->box.height)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
_gtk_rounded_box_contains_rectangle (const GtkRoundedBox *box,
|
|
gdouble x1,
|
|
gdouble y1,
|
|
gdouble x2,
|
|
gdouble y2)
|
|
{
|
|
if (x1 < box->box.x ||
|
|
y1 < box->box.y ||
|
|
x2 >= box->box.x + box->box.width ||
|
|
y2 >= box->box.y + box->box.height)
|
|
return FALSE;
|
|
|
|
if (x1 < box->box.x + box->corner[GTK_CSS_TOP_LEFT].horizontal &&
|
|
y1 < box->box.y + box->corner[GTK_CSS_TOP_LEFT].vertical)
|
|
return FALSE;
|
|
|
|
if (x2 > box->box.x + box->box.width - box->corner[GTK_CSS_TOP_RIGHT].horizontal &&
|
|
y1 < box->box.y + box->corner[GTK_CSS_TOP_RIGHT].vertical)
|
|
return FALSE;
|
|
|
|
if (x2 > box->box.x + box->box.width - box->corner[GTK_CSS_BOTTOM_RIGHT].horizontal &&
|
|
y2 > box->box.y + box->box.height - box->corner[GTK_CSS_BOTTOM_RIGHT].vertical)
|
|
return FALSE;
|
|
|
|
if (x1 < box->box.x + box->corner[GTK_CSS_BOTTOM_LEFT].horizontal &&
|
|
y2 > box->box.y + box->box.height - box->corner[GTK_CSS_BOTTOM_LEFT].vertical)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|