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a9c7cc7b04
closes: #1374 . Use SPDX short-form identifiers instead of lengthy copyright header to document per-file license and copyright. This commit updates all files under src/ directory where applicable as well as org.flameshot.Flameshot.metainfo.xml.
25 lines
660 B
C++
25 lines
660 B
C++
// SPDX-License-Identifier: GPL-3.0-or-later
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// SPDX-FileCopyrightText: 2017-2019 Alejandro Sirgo Rica & Contributors
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#include "colorutils.h"
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inline qreal getColorLuma(const QColor& c)
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{
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return 0.30 * c.redF() + 0.59 * c.greenF() + 0.11 * c.blueF();
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}
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bool ColorUtils::colorIsDark(const QColor& c)
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{
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// when luma <= 0.5, we considor it as a dark color
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return getColorLuma(c) <= 0.5;
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}
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QColor ColorUtils::contrastColor(const QColor& c)
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{
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int change = colorIsDark(c) ? 30 : -45;
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return QColor(qBound(0, c.red() + change, 255),
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qBound(0, c.green() + change, 255),
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qBound(0, c.blue() + change, 255));
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}
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