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annotate libgui/src/gui-utils.cc @ 29359:7854d5752dd2

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maint: merge stable to default.
author John W. Eaton <jwe@octave.org>
date Wed, 10 Feb 2021 10:10:40 -0500
parents ab8aa1bb3c2f
children 796f54d4ddbf
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2000-2021 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include "gui-utils.h"
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31
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32 namespace octave
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33 {
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34 OCTGUI_API QColor
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35 interpolate_color (const QColor& col1, const QColor& col2,
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36 double fs, double fv)
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37 {
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38 qreal h1, s1, v1, h2, s2, v2;
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39
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40 col1.getHsvF (&h1, &s1, &v1);
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41 col2.getHsvF (&h2, &s2, &v2);
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42
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43 return QColor::fromHsvF (h1, s1*fs, v1 + fv*(v2 - v1));
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44 }
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45 }