Commit 86719e1d authored by Benjamin Otte's avatar Benjamin Otte

gtk: Add GtkRoundedBox

CSS drawing operates on rounded boxes a lot, so it makes sense to split
them out instead of duplicating them everywhere.
parent d8033c37
...@@ -425,6 +425,7 @@ gtk_private_h_sources = \ ...@@ -425,6 +425,7 @@ gtk_private_h_sources = \
gtkrecentchooserdefault.h \ gtkrecentchooserdefault.h \
gtkrecentchooserprivate.h \ gtkrecentchooserprivate.h \
gtkrecentchooserutils.h \ gtkrecentchooserutils.h \
gtkroundedboxprivate.h \
gtkscaleprivate.h \ gtkscaleprivate.h \
gtksearchengine.h \ gtksearchengine.h \
gtksearchenginesimple.h \ gtksearchenginesimple.h \
...@@ -618,6 +619,7 @@ gtk_base_c_sources = \ ...@@ -618,6 +619,7 @@ gtk_base_c_sources = \
gtkrecentchooser.c \ gtkrecentchooser.c \
gtkrecentfilter.c \ gtkrecentfilter.c \
gtkrecentmanager.c \ gtkrecentmanager.c \
gtkroundedbox.c \
gtkscale.c \ gtkscale.c \
gtkscalebutton.c \ gtkscalebutton.c \
gtkscrollable.c \ gtkscrollable.c \
......
/* GTK - The GIMP Toolkit
* Copyright (C) 2011 Benjamin Otte <otte@gnome.org>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gtkroundedboxprivate.h"
#include <string.h>
/**
* _gtk_rounded_box_init_rect:
* @box: box to initialize
* @x: x coordinate of box
* @y: y coordinate of box
* @width: width of box
* @height: height of box
*
* Initializes the given @box to represent the given rectangle.
* The
**/
void
_gtk_rounded_box_init_rect (GtkRoundedBox *box,
double x,
double y,
double width,
double height)
{
box->box.x = x;
box->box.y = y;
box->box.width = width;
box->box.height = height;
memset (&box->border_radius, 0, sizeof (GtkCssBorderRadius));
}
void
_gtk_rounded_box_apply_border_radius (GtkRoundedBox *box,
GtkThemingEngine *engine,
GtkStateFlags state,
GtkJunctionSides junction)
{
GtkCssBorderCornerRadius *top_left_radius, *top_right_radius;
GtkCssBorderCornerRadius *bottom_left_radius, *bottom_right_radius;
gtk_theming_engine_get (engine, state,
/* Can't use border-radius as it's an int for
* backwards compat */
"border-top-left-radius", &top_left_radius,
"border-top-right-radius", &top_right_radius,
"border-bottom-right-radius", &bottom_right_radius,
"border-bottom-left-radius", &bottom_left_radius,
NULL);
if (top_left_radius && (junction & GTK_JUNCTION_CORNER_TOPLEFT) == 0)
box->border_radius.top_left = *top_left_radius;
if (top_right_radius && (junction & GTK_JUNCTION_CORNER_TOPRIGHT) == 0)
box->border_radius.top_right = *top_right_radius;
if (bottom_right_radius && (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT) == 0)
box->border_radius.bottom_right = *bottom_right_radius;
if (bottom_left_radius && (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT) == 0)
box->border_radius.bottom_left = *bottom_left_radius;
g_free (top_left_radius);
g_free (top_right_radius);
g_free (bottom_right_radius);
g_free (bottom_left_radius);
}
void
_gtk_rounded_box_grow (GtkRoundedBox *box,
double top,
double right,
double bottom,
double left)
{
box->box.x -= left;
box->box.width += left + right;
g_warn_if_fail (box->box.width > 0);
box->box.y -= top;
box->box.height += top + bottom;
g_warn_if_fail (box->box.height > 0);
if (box->border_radius.top_left.horizontal)
box->border_radius.top_left.horizontal = MAX (0, box->border_radius.top_left.horizontal + left);
if (box->border_radius.top_left.vertical)
box->border_radius.top_left.vertical = MAX (0, box->border_radius.top_left.vertical + top);
if (box->border_radius.top_right.horizontal)
box->border_radius.top_right.horizontal = MAX (0, box->border_radius.top_right.horizontal + right);
if (box->border_radius.top_right.vertical)
box->border_radius.top_right.vertical = MAX (0, box->border_radius.top_right.vertical + top);
if (box->border_radius.bottom_right.horizontal)
box->border_radius.bottom_right.horizontal = MAX (0, box->border_radius.bottom_right.horizontal + right);
if (box->border_radius.bottom_right.vertical)
box->border_radius.bottom_right.vertical = MAX (0, box->border_radius.bottom_right.vertical + bottom);
if (box->border_radius.bottom_left.horizontal)
box->border_radius.bottom_left.horizontal = MAX (0, box->border_radius.bottom_left.horizontal + left);
if (box->border_radius.bottom_left.vertical)
box->border_radius.bottom_left.vertical = MAX (0, box->border_radius.bottom_left.vertical + bottom);
}
void
_gtk_rounded_box_shrink (GtkRoundedBox *box,
double top,
double right,
double bottom,
double left)
{
_gtk_rounded_box_grow (box, -top, -right, -bottom, -left);
}
void
_gtk_rounded_box_move (GtkRoundedBox *box,
double dx,
double dy)
{
box->box.x += dx;
box->box.y += dy;
}
static void
_cairo_ellipsis (cairo_t *cr,
double xc, double yc,
double xradius, double yradius,
double angle1, double angle2)
{
if (xradius <= 0.0 || yradius <= 0.0)
{
cairo_line_to (cr, xc, yc);
return;
}
cairo_save (cr);
cairo_translate (cr, xc, yc);
cairo_scale (cr, xradius, yradius);
cairo_arc (cr, 0, 0, 1.0, angle1, angle2);
cairo_restore (cr);
}
void
_gtk_rounded_box_path (const GtkRoundedBox *box,
cairo_t *cr)
{
cairo_new_sub_path (cr);
_cairo_ellipsis (cr,
box->box.x + box->border_radius.top_left.horizontal,
box->box.y + box->border_radius.top_left.vertical,
box->border_radius.top_left.horizontal,
box->border_radius.top_left.vertical,
G_PI, 3 * G_PI / 2);
_cairo_ellipsis (cr,
box->box.x + box->box.width - box->border_radius.top_right.horizontal,
box->box.y + box->border_radius.top_right.vertical,
box->border_radius.top_right.horizontal,
box->border_radius.top_right.vertical,
- G_PI / 2, 0);
_cairo_ellipsis (cr,
box->box.x + box->box.width - box->border_radius.bottom_right.horizontal,
box->box.y + box->box.height - box->border_radius.bottom_right.vertical,
box->border_radius.bottom_right.horizontal,
box->border_radius.bottom_right.vertical,
0, G_PI / 2);
_cairo_ellipsis (cr,
box->box.x + box->border_radius.bottom_left.horizontal,
box->box.y + box->box.height - box->border_radius.bottom_left.vertical,
box->border_radius.bottom_left.horizontal,
box->border_radius.bottom_left.vertical,
G_PI / 2, G_PI);
}
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);
}
/* GTK - The GIMP Toolkit
* Copyright (C) 2011 Benjamin Otte <otte@gnome.org>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GTK_ROUNDED_BOX_PRIVATE_H__
#define __GTK_ROUNDED_BOX_PRIVATE_H__
#include <glib-object.h>
#include <cairo.h>
#include <gtk/gtkenums.h>
#include <gtk/gtkthemingengine.h>
#include "gtkcsstypesprivate.h"
G_BEGIN_DECLS
typedef struct _GtkRoundedBox GtkRoundedBox;
struct _GtkRoundedBox {
/*< private >*/
cairo_rectangle_t box;
GtkCssBorderRadius border_radius;
};
void _gtk_rounded_box_init_rect (GtkRoundedBox *box,
double x,
double y,
double width,
double height);
void _gtk_rounded_box_apply_border_radius (GtkRoundedBox *box,
GtkThemingEngine *engine,
GtkStateFlags state,
GtkJunctionSides junction);
void _gtk_rounded_box_shrink (GtkRoundedBox *box,
double top,
double right,
double bottom,
double left);
void _gtk_rounded_box_move (GtkRoundedBox *box,
double dx,
double dy);
void _gtk_rounded_box_path (const GtkRoundedBox *box,
cairo_t *cr);
void _gtk_rounded_box_clip_path (const GtkRoundedBox *box,
cairo_t *cr);
G_END_DECLS
#endif /* __GTK_ROUNDED_BOX_PRIVATE_H__ */
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