forked from osmocom/wireshark
124 lines
4.0 KiB
C++
124 lines
4.0 KiB
C++
/* color_utils.cpp
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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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
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* as published by the Free Software Foundation; either version 2
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* of the 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,
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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
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* GNU 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "color_utils.h"
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#include "tango_colors.h"
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const QColor ColorUtils::expert_color_comment = QColor ( 0xb7, 0xf7, 0x74 ); /* Green */
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const QColor ColorUtils::expert_color_chat = QColor ( 0x80, 0xb7, 0xf7 ); /* Light blue */
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const QColor ColorUtils::expert_color_note = QColor ( 0xa0, 0xff, 0xff ); /* Bright turquoise */
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const QColor ColorUtils::expert_color_warn = QColor ( 0xf7, 0xf2, 0x53 ); /* Yellow */
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const QColor ColorUtils::expert_color_error = QColor ( 0xff, 0x5c, 0x5c ); /* Pale red */
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const QColor ColorUtils::expert_color_foreground = QColor ( 0x00, 0x00, 0x00 ); /* Black */
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const QColor ColorUtils::hidden_proto_item = QColor ( 0x44, 0x44, 0x44 ); /* Gray */
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// Available colors
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// XXX - Add custom
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const QList<QRgb> ColorUtils::graph_colors_ = QList<QRgb>()
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<< tango_aluminium_6 // Bar outline (use black instead)?
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<< tango_sky_blue_5
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<< tango_butter_6
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<< tango_chameleon_5
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<< tango_scarlet_red_5
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<< tango_plum_5
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<< tango_orange_6
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<< tango_aluminium_3
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<< tango_sky_blue_3
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<< tango_butter_3
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<< tango_chameleon_3
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<< tango_scarlet_red_3
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<< tango_plum_3
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<< tango_orange_3;
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ColorUtils::ColorUtils(QObject *parent) :
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QObject(parent)
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{
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}
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//
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// A color_t has RGB values in [0,65535].
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// Qt RGB colors have RGB values in [0,255].
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//
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// 65535/255 = 257 = 0x0101, so converting from [0,255] to
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// [0,65535] involves just shifting the 8-bit value left 8 bits
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// and ORing them together.
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//
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// Converting from [0,65535] to [0,255] without rounding involves
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// just shifting the 16-bit value right 8 bits; I guess you could
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// round them by adding 0x80 to the value before shifting.
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//
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QColor ColorUtils::fromColorT (const color_t *color) {
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if (!color) return QColor();
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// Convert [0,65535] values to [0,255] values
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return QColor(color->red >> 8, color->green >> 8, color->blue >> 8);
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}
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QColor ColorUtils::fromColorT(color_t color)
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{
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return fromColorT(&color);
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}
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const color_t ColorUtils::toColorT(const QColor color)
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{
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color_t colort;
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// Convert [0,255] values to [0,65535] values
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colort.red = (color.red() << 8) | color.red();
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colort.green = (color.green() << 8) | color.green();
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colort.blue = (color.blue() << 8) | color.blue();
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return colort;
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}
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QRgb ColorUtils::alphaBlend(const QColor &color1, const QColor &color2, qreal alpha)
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{
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alpha = qBound(0.0, alpha, 1.0);
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int r1 = color1.red() * alpha;
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int g1 = color1.green() * alpha;
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int b1 = color1.blue() * alpha;
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int r2 = color2.red() * (1 - alpha);
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int g2 = color2.green() * (1 - alpha);
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int b2 = color2.blue() * (1 - alpha);
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QColor alpha_color(r1 + r2, g1 + g2, b1 + b2);
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return alpha_color.rgb();
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}
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QRgb ColorUtils::alphaBlend(const QBrush &brush1, const QBrush &brush2, qreal alpha)
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{
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return alphaBlend(brush1.color(), brush2.color(), alpha);
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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