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/* Adwaita - a GTK+ engine
*
* Copyright (C) 2011 Carlos Garnacho <carlosg@gnome.org>
* Copyright (C) 2011 Red Hat, Inc.
*
* 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 2.1 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors: Carlos Garnacho <carlosg@gnome.org>
* Cosimo Cecchi <cosimoc@gnome.org>
*
* Project contact: <gnome-themes-list@gnome.org>
*/
#include "sugar_utils.h"
void
sugar_trim_allocation_for_scale (GtkThemingEngine *engine,
gdouble *x,
gdouble *y,
gdouble *width,
gdouble *height)
{
const GtkWidgetPath *path;
path = gtk_theming_engine_get_path (engine);
if (gtk_widget_path_is_type (path, GTK_TYPE_SCALE) &&
(gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_TROUGH) ||
gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_PROGRESSBAR)))
{
/* Render GtkScale trough thinner */
if (!gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_VERTICAL))
{
*y += *height / 2.0 - 2.0;
*height = 4;
}
else
{
*x += *width / 2.0 - 2.0;
*width = 4;
}
}
}
void
_cairo_round_rectangle_sides (cairo_t *cr,
gdouble radius,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
guint sides,
GtkJunctionSides junction)
{
radius = CLAMP (radius, 0, MIN (width / 2, height / 2));
if (sides & SIDE_RIGHT)
{
if (radius == 0 ||
(junction & GTK_JUNCTION_CORNER_TOPRIGHT))
cairo_move_to (cr, x + width, y);
else
{
cairo_new_sub_path (cr);
cairo_arc (cr, x + width - radius, y + radius, radius, - G_PI / 4, 0);
}
if (radius == 0 ||
(junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT))
cairo_line_to (cr, x + width, y + height);
else
cairo_arc (cr, x + width - radius, y + height - radius, radius, 0, G_PI / 4);
}
if (sides & SIDE_BOTTOM)
{
if (radius != 0 &&
! (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT))
{
if ((sides & SIDE_RIGHT) == 0)
cairo_new_sub_path (cr);
cairo_arc (cr, x + width - radius, y + height - radius, radius, G_PI / 4, G_PI / 2);
}
else if ((sides & SIDE_RIGHT) == 0)
cairo_move_to (cr, x + width, y + height);
if (radius == 0 ||
(junction & GTK_JUNCTION_CORNER_BOTTOMLEFT))
cairo_line_to (cr, x, y + height);
else
cairo_arc (cr, x + radius, y + height - radius, radius, G_PI / 2, 3 * (G_PI / 4));
}
else
cairo_move_to (cr, x, y + height);
if (sides & SIDE_LEFT)
{
if (radius != 0 &&
! (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT))
{
if ((sides & SIDE_BOTTOM) == 0)
cairo_new_sub_path (cr);
cairo_arc (cr, x + radius, y + height - radius, radius, 3 * (G_PI / 4), G_PI);
}
else if ((sides & SIDE_BOTTOM) == 0)
cairo_move_to (cr, x, y + height);
if (radius == 0 ||
(junction & GTK_JUNCTION_CORNER_TOPLEFT))
cairo_line_to (cr, x, y);
else
cairo_arc (cr, x + radius, y + radius, radius, G_PI, G_PI + G_PI / 4);
}
if (sides & SIDE_TOP)
{
if (radius != 0 &&
! (junction & GTK_JUNCTION_CORNER_TOPLEFT))
{
if ((sides & SIDE_LEFT) == 0)
cairo_new_sub_path (cr);
cairo_arc (cr, x + radius, y + radius, radius, 5 * (G_PI / 4), 3 * (G_PI / 2));
}
else if ((sides & SIDE_LEFT) == 0)
cairo_move_to (cr, x, y);
if (radius == 0 ||
(junction & GTK_JUNCTION_CORNER_TOPRIGHT))
cairo_line_to (cr, x + width, y);
else
cairo_arc (cr, x + width - radius, y + radius, radius, 3 * (G_PI / 2), - G_PI / 4);
}
}
void
_cairo_uneven_frame (cairo_t *cr,
gdouble radius,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkBorder *border,
GtkJunctionSides junction)
{
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_set_line_width (cr, 1);
_cairo_round_rectangle_sides (cr, (gdouble) radius,
x, y,
width, height,
SIDE_ALL, junction);
_cairo_round_rectangle_sides (cr, (gdouble) radius,
x + border->left,
y + border->top,
width - border->left - border->right,
height - border->top - border->bottom,
SIDE_ALL, junction);
}
/* Set the appropriate matrix for
* patterns coming from the style context
*/
void
style_pattern_set_matrix (cairo_pattern_t *pattern,
gdouble width,
gdouble height,
gboolean repeat)
{
cairo_matrix_t matrix;
gint w, h;
if (cairo_pattern_get_type (pattern) == CAIRO_PATTERN_TYPE_SURFACE)
{
cairo_surface_t *surface;
cairo_pattern_get_surface (pattern, &surface);
w = cairo_image_surface_get_width (surface);
h = cairo_image_surface_get_height (surface);
}
else
w = h = 1;
cairo_matrix_init_scale (&matrix, (gdouble) w / width, (gdouble) h / height);
cairo_pattern_set_matrix (pattern, &matrix);
if (repeat)
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
}
gboolean
sugar_render_from_assets_common (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
gboolean retval = FALSE;
GtkStateFlags state;
cairo_pattern_t *asset = NULL;
cairo_surface_t *surface = NULL;
state = gtk_theming_engine_get_state (engine);
gtk_theming_engine_get (engine, state,
"background-image", &asset,
NULL);
if (asset != NULL)
cairo_pattern_get_surface (asset, &surface);
if (surface != NULL)
{
cairo_save (cr);
cairo_set_source_surface (cr, surface, x, y);
cairo_scale (cr,
width / cairo_image_surface_get_width (surface),
height / cairo_image_surface_get_height (surface));
cairo_paint (cr);
cairo_restore (cr);
retval = TRUE;
}
if (asset != NULL)
cairo_pattern_destroy (asset);
return retval;
}
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