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99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
/*
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Copyright 2006-2025 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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QElectroTech 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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You should have received a copy of the GNU General Public License
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along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "colorcombobox.h"
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#include "colorcomboboxdelegate.h"
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#include <QColorDialog>
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#include <QPainter>
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#include <QStylePainter>
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#include <Qt>
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/**
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@brief ColorComboBox::ColorComboBox
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Simple constructor
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@param parent QObject parent of the ColorComboBox
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*/
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ColorComboBox::ColorComboBox(QWidget *parent) : QComboBox(parent)
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{
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connect(this, &QComboBox::activated, this, &ColorComboBox::colorSelected);
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setItemDelegate(new ColorComboBoxDelegate());
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}
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/**
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@brief ColorComboBox::setColors
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Sets the colors of the combo box. An item at the top will be added to allow selection
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of a custom color.
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@param colors Vector of colors to add to the combo box
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*/
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void ColorComboBox::setColors(const QVector<QColor> &colors)
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{
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addItem(tr("[Custom color...]"), QColor(Qt::black));
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for(auto &color : colors) {
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addItem(color.name(), color);
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}
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}
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/**
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@brief ColorComboBox::colorSelected
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Opens a color selection dialog and lets the user select a color.
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@param checked Not used
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*/
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void ColorComboBox::colorSelected(int index)
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{
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if (index == 0) {
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// Open color selection dialog if custom color is selected
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auto new_color = QColorDialog::getColor(itemData(index).value<QColor>(), this, tr("Select color"), QColorDialog::DontUseNativeDialog);
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// Validate and emit user input color
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if (new_color.isValid()) {
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setItemData(index, new_color);
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emit activated(new_color);
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}
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} else {
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// Emit color from selected combo box row
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emit activated(itemData(index).value<QColor>());
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}
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}
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/**
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@brief ColorComboBox::paintEvent
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Paints a filled rectangle with the current selected color on the combo box surface.
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@param e Paint event context
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*/
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void ColorComboBox::paintEvent(QPaintEvent *e) {
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// Padding for the color indicator
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const int padding_x = 5;
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const int padding_y = 5;
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// Create painter and draw a vanilla combobox
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QStylePainter painter(this);
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QStyleOptionComboBox opt;
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initStyleOption(&opt);
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painter.drawComplexControl(QStyle::CC_ComboBox, opt);
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// Get dimensions of the combo box paint surface
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auto r_width = painter.device()->width();
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auto r_height = painter.device()->height();
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// Paint a rectangle with a margin
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auto color_indicator = QRect(padding_x, padding_y, r_width - padding_x * 2, r_height - padding_y * 2);
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painter.fillRect(color_indicator, itemData(currentIndex()).value<QColor>());
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}
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