pv/widgets/colorbutton.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "colorbutton.hpp"
  21
  22 #include <cassert>
  23
  24 #include <QApplication>
  25 #include <QColorDialog>
  26 #include <QPainter>
  27
  28 namespace pv {
  29 namespace widgets {
  30
  31 const int ColorButton::SwatchMargin = 7;
  32
  33 ColorButton::ColorButton(QWidget *parent) :
  34         QPushButton("", parent),
  35         popup_(nullptr)
  36 {
  37         connect(this, SIGNAL(clicked(bool)), this, SLOT(on_clicked(bool)));
  38 }
  39
  40 ColorButton::ColorButton(int rows, int cols, QWidget *parent) :
  41         QPushButton("", parent),
  42         popup_(new ColorPopup(rows, cols, this))
  43 {
  44         connect(this, SIGNAL(clicked(bool)), this, SLOT(on_clicked(bool)));
  45         connect(popup_, SIGNAL(selected(int, int)),
  46                 this, SLOT(on_selected(int, int)));
  47 }
  48
  49 ColorPopup* ColorButton::popup()
  50 {
  51         return popup_;
  52 }
  53
  54 const QColor& ColorButton::color() const
  55 {
  56         return cur_color_;
  57 }
  58
  59 void ColorButton::set_color(QColor color)
  60 {
  61         cur_color_ = color;
  62
  63         if (popup_) {
  64                 const unsigned int rows = popup_->well_array().numRows();
  65                 const unsigned int cols = popup_->well_array().numCols();
  66
  67                 for (unsigned int r = 0; r < rows; r++)
  68                         for (unsigned int c = 0; c < cols; c++)
  69                                 if (popup_->well_array().cellBrush(r, c).color() == color) {
  70                                         popup_->well_array().setSelected(r, c);
  71                                         popup_->well_array().setCurrent(r, c);
  72                                         return;
  73                                 }
  74         }
  75 }
  76
  77 void ColorButton::set_palette(const QColor *const palette)
  78 {
  79         assert(palette);
  80         assert(popup_);
  81
  82         const unsigned int rows = popup_->well_array().numRows();
  83         const unsigned int cols = popup_->well_array().numCols();
  84
  85         for (unsigned int r = 0; r < rows; r++)
  86                 for (unsigned int c = 0; c < cols; c++)
  87                         popup_->well_array().setCellBrush(r, c, QBrush(palette[r * cols + c]));
  88 }
  89
  90 void ColorButton::on_clicked(bool)
  91 {
  92         if (popup_) {
  93                 popup_->set_position(mapToGlobal(rect().center()), Popup::Bottom);
  94                 popup_->show();
  95         } else {
  96                 QColorDialog dlg(this);
  97                 dlg.setOption(QColorDialog::ShowAlphaChannel);
  98                 dlg.setOption(QColorDialog::DontUseNativeDialog);
  99                 connect(&dlg, SIGNAL(colorSelected(const QColor)),
 100                         this, SLOT(on_color_selected(const QColor)));
 101                 dlg.setCurrentColor(cur_color_);
 102                 dlg.exec();
 103         }
 104 }
 105
 106 void ColorButton::on_selected(int row, int col)
 107 {
 108         assert(popup_);
 109
 110         cur_color_ = popup_->well_array().cellBrush(row, col).color();
 111         selected(cur_color_);
 112 }
 113
 114 void ColorButton::on_color_selected(const QColor& color)
 115 {
 116         cur_color_ = color;
 117         selected(cur_color_);
 118 }
 119
 120 void ColorButton::paintEvent(QPaintEvent *event)
 121 {
 122         QPushButton::paintEvent(event);
 123
 124         QPainter p(this);
 125
 126         const QRect r = rect().adjusted(SwatchMargin, SwatchMargin,
 127                 -SwatchMargin, -SwatchMargin);
 128         p.setPen(QApplication::palette().color(QPalette::Dark));
 129         p.setBrush(QBrush(cur_color_));
 130         p.drawRect(r);
 131 }
 132
 133 }  // namespace widgets
 134 }  // namespace pv