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annotate libgui/src/color-picker.cc @ 26376:00f796120a6d stable

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maint: Update copyright dates in all source files.
author John W. Eaton <jwe@octave.org>
date Wed, 02 Jan 2019 16:32:43 -0500
parents 6652d3823428
children 465ac679e976
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1 /*
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2
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3 This class provides a simple color picker based on tQColorButton
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4 by Harald Jedele, 23.03.01, GPL version 2 or any later version.
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5
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6 Copyright (C) FZI Forschungszentrum Informatik Karlsruhe
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7 Copyright (C) 2013-2019 Torsten
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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 // Author: Torsten <ttl@justmail.de>
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27
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28 #if defined (HAVE_CONFIG_H)
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29 # include "config.h"
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30 #endif
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31
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32 #include "color-picker.h"
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33
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34 namespace octave
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35 {
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36 // Constructor with initial color as parameter
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37 color_picker::color_picker (QColor old_color, QWidget *p)
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38 : QPushButton (p)
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39 {
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40 m_color = old_color;
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41 setFlat (true);
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42 setFocusPolicy (Qt::NoFocus); // no focus, would changes the color
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43 update_button ();
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44 connect (this, SIGNAL (clicked (void)), SLOT (select_color (void)));
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45 }
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46
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47 // Slot for button clicked: select a new color using QColorDialog
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48 void color_picker::select_color (void)
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49 {
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50 QColor new_color = QColorDialog::getColor (m_color);
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51
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52 if (new_color.isValid () && new_color != m_color)
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53 {
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54 m_color = new_color;
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55 update_button ();
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56 }
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57 }
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58
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59 // Draw the button with the actual color (using a stylesheet)
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60 void color_picker::update_button (void)
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61 {
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62 // Is this the right place to look for a "foreground" color that would
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63 // provide a reasonable border for the color swatches?
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64 QWidget *p = parentWidget ();
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65
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66 QString bordercolor
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67 = (p ? p->palette ().text ().color ().name () : QString ("#000000"));
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68
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69 setStyleSheet (QString ("background-color: %1; border: 1px solid %2;")
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70 .arg (m_color.name ())
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71 .arg (bordercolor));
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72
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73 repaint ();
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74 }
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75 }