gtk2/gtk/gtkcssimagewin32.c

254 lines
7.1 KiB
C

/*
* Copyright © 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, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkcssimagewin32private.h"
#include "gtkcssprovider.h"
G_DEFINE_TYPE (GtkCssImageWin32, _gtk_css_image_win32, GTK_TYPE_CSS_IMAGE)
static void
gtk_css_image_win32_draw (GtkCssImage *image,
cairo_t *cr,
double width,
double height)
{
GtkCssImageWin32 *wimage = GTK_CSS_IMAGE_WIN32 (image);
cairo_surface_t *surface;
int dx, dy;
surface = gtk_win32_theme_create_surface (wimage->theme, wimage->part, wimage->state, wimage->margins,
width, height, &dx, &dy);
if (wimage->state2 >= 0)
{
cairo_surface_t *surface2;
cairo_t *cr2;
int dx2, dy2;
surface2 = gtk_win32_theme_create_surface (wimage->theme, wimage->part2, wimage->state2, wimage->margins,
width, height, &dx2, &dy2);
cr2 = cairo_create (surface);
cairo_set_source_surface (cr2, surface2, dx2 - dx, dy2-dy);
cairo_paint_with_alpha (cr2, wimage->over_alpha);
cairo_destroy (cr2);
cairo_surface_destroy (surface2);
}
cairo_set_source_surface (cr, surface, dx, dy);
cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_NONE);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
cairo_surface_destroy (surface);
}
static gboolean
gtk_css_image_win32_parse (GtkCssImage *image,
GtkCssParser *parser)
{
GtkCssImageWin32 *wimage = GTK_CSS_IMAGE_WIN32 (image);
if (!_gtk_css_parser_try (parser, "-gtk-win32-theme-part", TRUE))
{
_gtk_css_parser_error (parser, "'-gtk-win32-theme-part'");
return FALSE;
}
if (!_gtk_css_parser_try (parser, "(", TRUE))
{
_gtk_css_parser_error (parser,
"Expected '(' after '-gtk-win32-theme-part'");
return FALSE;
}
wimage->theme = gtk_win32_theme_parse (parser);
if (wimage->theme == NULL)
return FALSE;
if (! _gtk_css_parser_try (parser, ",", TRUE))
{
_gtk_css_parser_error (parser, "Expected ','");
return FALSE;
}
if (!_gtk_css_parser_try_int (parser, &wimage->part))
{
_gtk_css_parser_error (parser, "Expected a valid integer value");
return FALSE;
}
if (! _gtk_css_parser_try (parser, ",", TRUE))
{
_gtk_css_parser_error (parser, "Expected ','");
return FALSE;
}
if (!_gtk_css_parser_try_int (parser, &wimage->state))
{
_gtk_css_parser_error (parser, "Expected a valid integer value");
return FALSE;
}
while ( _gtk_css_parser_try (parser, ",", TRUE))
{
if ( _gtk_css_parser_try (parser, "over", TRUE))
{
if (!_gtk_css_parser_try (parser, "(", TRUE))
{
_gtk_css_parser_error (parser,
"Expected '(' after 'over'");
return FALSE;
}
if (!_gtk_css_parser_try_int (parser, &wimage->part2))
{
_gtk_css_parser_error (parser, "Expected a valid integer value");
return FALSE;
}
if (! _gtk_css_parser_try (parser, ",", TRUE))
{
_gtk_css_parser_error (parser, "Expected ','");
return FALSE;
}
if (!_gtk_css_parser_try_int (parser, &wimage->state2))
{
_gtk_css_parser_error (parser, "Expected a valid integer value");
return FALSE;
}
if ( _gtk_css_parser_try (parser, ",", TRUE))
{
if (!_gtk_css_parser_try_double (parser, &wimage->over_alpha))
{
_gtk_css_parser_error (parser, "Expected a valid double value");
return FALSE;
}
}
if (!_gtk_css_parser_try (parser, ")", TRUE))
{
_gtk_css_parser_error (parser,
"Expected ')' at end of 'over'");
return FALSE;
}
}
else if ( _gtk_css_parser_try (parser, "margins", TRUE))
{
guint i;
if (!_gtk_css_parser_try (parser, "(", TRUE))
{
_gtk_css_parser_error (parser,
"Expected '(' after 'margins'");
return FALSE;
}
for (i = 0; i < 4; i++)
{
if (!_gtk_css_parser_try_int (parser, &wimage->margins[i]))
break;
}
if (i == 0)
{
_gtk_css_parser_error (parser, "Expected valid margins");
return FALSE;
}
if (i == 1)
wimage->margins[1] = wimage->margins[0];
if (i <= 2)
wimage->margins[2] = wimage->margins[1];
if (i <= 3)
wimage->margins[3] = wimage->margins[2];
if (!_gtk_css_parser_try (parser, ")", TRUE))
{
_gtk_css_parser_error (parser,
"Expected ')' at end of 'margins'");
return FALSE;
}
}
else
{
_gtk_css_parser_error (parser,
"Expected identifier");
return FALSE;
}
}
if (!_gtk_css_parser_try (parser, ")", TRUE))
{
_gtk_css_parser_error (parser,
"Expected ')'");
return FALSE;
}
return TRUE;
}
static void
gtk_css_image_win32_print (GtkCssImage *image,
GString *string)
{
g_string_append (string, "none /* printing win32 theme components is not implemented */");
}
static void
gtk_css_image_win32_finalize (GObject *object)
{
GtkCssImageWin32 *wimage = GTK_CSS_IMAGE_WIN32 (object);
if (wimage->theme)
gtk_win32_theme_unref (wimage->theme);
G_OBJECT_CLASS (_gtk_css_image_win32_parent_class)->finalize (object);
}
static void
_gtk_css_image_win32_class_init (GtkCssImageWin32Class *klass)
{
GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_css_image_win32_finalize;
image_class->draw = gtk_css_image_win32_draw;
image_class->parse = gtk_css_image_win32_parse;
image_class->print = gtk_css_image_win32_print;
}
static void
_gtk_css_image_win32_init (GtkCssImageWin32 *wimage)
{
wimage->over_alpha = 1.0;
wimage->part2 = -1;
wimage->state2 = -1;
}