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annotate libgui/src/color-picker.cc @ 27919:1891570abac8

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2020.
author John W. Eaton <jwe@octave.org>
date Mon, 06 Jan 2020 22:29:51 -0500
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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) 2013-2020 The Octave Project Developers
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7
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8 See the file COPYRIGHT.md in the top-level directory of this distribution
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9 or <https://octave.org/COPYRIGHT.html/>.
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10
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12 This file is part of Octave.
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13
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14 Octave is free software: you can redistribute it and/or modify it
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15 under the terms of the GNU General Public License as published by
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16 the Free Software Foundation, either version 3 of the License, or
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17 (at your option) any later version.
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18
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19 Octave is distributed in the hope that it will be useful, but
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20 WITHOUT ANY WARRANTY; without even the implied warranty of
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21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 GNU General Public License for more details.
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23
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24 You should have received a copy of the GNU General Public License
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25 along with Octave; see the file COPYING. If not, see
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26 <https://www.gnu.org/licenses/>.
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27
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28 */
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29
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30 // Author: Torsten <ttl@justmail.de>
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32 #if defined (HAVE_CONFIG_H)
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33 # include "config.h"
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34 #endif
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35
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36 #include "color-picker.h"
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37
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38 namespace octave
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39 {
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40 // Constructor with initial color as parameter
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41 color_picker::color_picker (QColor old_color, QWidget *p)
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42 : QPushButton (p)
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43 {
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44 m_color = old_color;
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45 setFlat (true);
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46 setFocusPolicy (Qt::NoFocus); // no focus, would change the color
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47 update_button ();
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48 connect (this, SIGNAL (clicked (void)), SLOT (select_color (void)));
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49 }
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50
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51 // Slot for button clicked: select a new color using QColorDialog
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52 void color_picker::select_color (void)
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53 {
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54 QColor new_color = QColorDialog::getColor (m_color);
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55
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56 if (new_color.isValid () && new_color != m_color)
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57 {
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58 m_color = new_color;
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59 update_button ();
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60 }
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61 }
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62
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63 // Draw the button with the actual color (using a stylesheet)
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64 void color_picker::update_button (void)
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65 {
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66 // Is this the right place to look for a "foreground" color that would
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67 // provide a reasonable border for the color swatches?
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68 QWidget *p = parentWidget ();
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69
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70 QString bordercolor
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71 = (p ? p->palette ().text ().color ().name () : QString ("#000000"));
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72
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73 setStyleSheet (QString ("background-color: %1; border: 1px solid %2;")
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74 .arg (m_color.name ())
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75 .arg (bordercolor));
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76
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77 repaint ();
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78 }
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79 }