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https://gitlab.gnome.org/GNOME/nautilus
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313469f413
check will report if it fails instead of just aborting. Added new functions to manage a string that specifies a color or gradient, and added tests for the new functions.
75 lines
3.2 KiB
C
75 lines
3.2 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
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gdk-extensions.h: Graphics routines to augment what's in gdk.
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Copyright (C) 1999, 2000 Eazel, Inc.
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The Gnome Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome 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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the Gnome Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Authors: Darin Adler <darin@eazel.com>
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*/
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#ifndef GDK_EXTENSIONS_H
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#define GDK_EXTENSIONS_H
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#include <gdk/gdk.h>
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/* A gradient spec. is a string that contains a specifier for either a
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color or a gradient. If the string has a "-" in it, then it's a gradient.
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The gradient is vertical by default and the spec. can end with ":v" to indicate that.
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If the gradient ends with ":h", the gradient is horizontal.
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*/
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char * nautilus_gradient_new (const char *start_color,
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const char *end_color,
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gboolean is_horizontal);
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gboolean nautilus_gradient_is_gradient (const char *gradient_spec);
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char * nautilus_gradient_get_start_color_spec (const char *gradient_spec);
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char * nautilus_gradient_get_end_color_spec (const char *gradient_spec);
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gboolean nautilus_gradient_is_horizontal (const char *gradient_spec);
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char * nautilus_gradient_set_left_color_spec (const char *gradient_spec,
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const char *left_color);
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char * nautilus_gradient_set_top_color_spec (const char *gradient_spec,
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const char *top_color);
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char * nautilus_gradient_set_right_color_spec (const char *gradient_spec,
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const char *right_color);
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char * nautilus_gradient_set_bottom_color_spec (const char *gradient_spec,
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const char *bottom_color);
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/* Fill routines that take GdkRectangle parameters instead of four coordinates. */
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void nautilus_fill_rectangle (GdkDrawable *drawable,
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GdkGC *gc,
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const GdkRectangle *rectangle);
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void nautilus_fill_rectangle_with_color (GdkDrawable *drawable,
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GdkGC *gc,
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const GdkRectangle *rectangle,
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const GdkColor *color);
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void nautilus_fill_rectangle_with_gradient (GdkDrawable *drawable,
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GdkGC *gc,
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GdkColormap *colormap,
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const GdkRectangle *rectangle,
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const GdkColor *start_color,
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const GdkColor *end_color,
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gboolean horizontal_gradient);
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/* A basic operation needed for drawing gradients is interpolating two colors.*/
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void nautilus_interpolate_color (gdouble ratio,
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const GdkColor *start_color,
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const GdkColor *end_color,
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GdkColor *interpolated_color);
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#endif /* GDK_EXTENSIONS_H */
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