8199699e7c
GdkColor is about to be deprecated, so move to GdkRGBA instead. It might be worth considering using cairo patterns for the gradients rather than using custom code to render gradients to a pixbuf which is then drawn with cairo, but for now this is just a straight port of the existing code. https://bugzilla.gnome.org/show_bug.cgi?id=650586
65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* Mutter gradient rendering */
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/*
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* Copyright (C) 2001 Havoc Pennington, 99% copied from wrlib in
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* WindowMaker, Copyright (C) 1997-2000 Dan Pascu and Alfredo Kojima
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU 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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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA. */
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#ifndef META_GRADIENT_H
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#define META_GRADIENT_H
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gdk/gdk.h>
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typedef enum
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{
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META_GRADIENT_VERTICAL,
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META_GRADIENT_HORIZONTAL,
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META_GRADIENT_DIAGONAL,
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META_GRADIENT_LAST
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} MetaGradientType;
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GdkPixbuf* meta_gradient_create_simple (int width,
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int height,
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const GdkRGBA *from,
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const GdkRGBA *to,
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MetaGradientType style);
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GdkPixbuf* meta_gradient_create_multi (int width,
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int height,
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const GdkRGBA *colors,
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int n_colors,
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MetaGradientType style);
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GdkPixbuf* meta_gradient_create_interwoven (int width,
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int height,
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const GdkRGBA colors1[2],
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int thickness1,
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const GdkRGBA colors2[2],
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int thickness2);
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/* Generate an alpha gradient and multiply it with the existing alpha
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* channel of the given pixbuf
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*/
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void meta_gradient_add_alpha (GdkPixbuf *pixbuf,
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const guchar *alphas,
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int n_alphas,
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MetaGradientType type);
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#endif
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