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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* nautilus-gdk-extensions.h: Graphics routines to augment what's in gdk.
Copyright (C) 1999, 2000 Eazel, Inc.
The Gnome Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The Gnome 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the Gnome Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Authors: Darin Adler <darin@eazel.com>
*/
#ifndef NAUTILUS_GDK_EXTENSIONS_H
#define NAUTILUS_GDK_EXTENSIONS_H
#include <gdk/gdktypes.h>
/* A gradient spec. is a string that contains a specifier for either a
color or a gradient. If the string has a "-" in it, then it's a gradient.
The gradient is vertical by default and the spec. can end with ":v" to indicate that.
If the gradient ends with ":h", the gradient is horizontal.
*/
char * nautilus_gradient_new (const char *start_color,
const char *end_color,
gboolean is_horizontal);
gboolean nautilus_gradient_is_gradient (const char *gradient_spec);
char * nautilus_gradient_get_start_color_spec (const char *gradient_spec);
char * nautilus_gradient_get_end_color_spec (const char *gradient_spec);
gboolean nautilus_gradient_is_horizontal (const char *gradient_spec);
char * nautilus_gradient_set_left_color_spec (const char *gradient_spec,
const char *left_color);
char * nautilus_gradient_set_top_color_spec (const char *gradient_spec,
const char *top_color);
char * nautilus_gradient_set_right_color_spec (const char *gradient_spec,
const char *right_color);
char * nautilus_gradient_set_bottom_color_spec (const char *gradient_spec,
const char *bottom_color);
/* A version of parse_color that substitutes a default color instead of returning
a boolean to indicate it cannot be parsed.
*/
void nautilus_gdk_color_parse_with_default (const char *color_spec,
const GdkColor *default_color,
GdkColor *color);
void nautilus_gdk_color_parse_with_white_default (const char *color_spec,
GdkColor *color);
/* Fill routines that take GdkRectangle parameters instead of four integers. */
void nautilus_fill_rectangle (GdkDrawable *drawable,
GdkGC *gc,
const GdkRectangle *rectangle);
void nautilus_fill_rectangle_with_color (GdkDrawable *drawable,
GdkGC *gc,
const GdkRectangle *rectangle,
const GdkColor *color);
void nautilus_fill_rectangle_with_gradient (GdkDrawable *drawable,
GdkGC *gc,
GdkColormap *colormap,
const GdkRectangle *rectangle,
const GdkColor *start_color,
const GdkColor *end_color,
gboolean horizontal_gradient);
/* A basic operation we use for drawing gradients is interpolating two colors.*/
void nautilus_interpolate_color (gdouble ratio,
const GdkColor *start_color,
const GdkColor *end_color,
GdkColor *interpolated_color);
gboolean nautilus_gdk_font_equal (GdkFont *font_a_null_allowed,
GdkFont *font_b_null_allowed);
/* Convenience functions for lists of GdkPixbuf objects. */
void nautilus_gdk_pixbuf_list_ref (GList *pixbuf_list);
void nautilus_gdk_pixbuf_list_unref (GList *pixbuf_list);
void nautilus_gdk_pixbuf_list_free (GList *pixbuf_list);
#endif /* NAUTILUS_GDK_EXTENSIONS_H */
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