136 lines
3.8 KiB
C++
136 lines
3.8 KiB
C++
/*
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* Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
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*
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* This program 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 3 of the License, or
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* (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, see <https://www.gnu.org/licenses/>.
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*/
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#include "coloredit.h"
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#include <QColorDialog>
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#include <QPainter>
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#include <QDebug>
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#include <QApplication>
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ColorEdit::ColorEdit(QWidget *parent):QFrame(parent)
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{
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setFrameStyle(QFrame::Panel);
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setLineWidth(1);
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mColor = Qt::black;
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}
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QColor ColorEdit::color()
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{
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return mColor;
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}
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void ColorEdit::setColor(const QColor &value)
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{
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if (mColor!=value) {
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mColor=value;
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emit colorChanged(value);
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resize(sizeHint());
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repaint();
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}
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}
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QColor ColorEdit::contrast()
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{
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int crBg;
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if (!mColor.isValid())
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crBg = palette().color(QPalette::Base).rgb() & 0xFFFFFF;
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else
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crBg = mColor.rgb() & 0xFFFFFF;
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int TOLERANCE = 30;
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int result;
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if (
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abs(((crBg ) & 0xFF) - 0x80) <= TOLERANCE &&
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abs(((crBg >> 8) & 0xFF) - 0x80) <= TOLERANCE &&
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abs(((crBg >> 16) & 0xFF) - 0x80) <= TOLERANCE
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)
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result = (0x7F7F7F + crBg) & 0xFFFFFF;
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else
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result = crBg ^ 0xFFFFFF;
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return QColor(result);
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}
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QSize ColorEdit::sizeHint() const
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{
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QRect rect;
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if (mColor.isValid() )
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rect = fontMetrics().boundingRect(mColor.name(QColor::HexArgb));
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else
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rect = fontMetrics().boundingRect(tr("NONE"));
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return QSize{rect.width()+ 10,
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rect.height()+ 6 };
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}
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void ColorEdit::paintEvent(QPaintEvent *)
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{
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QPainter painter(this);
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QRect rect = QRect(lineWidth(),lineWidth(),width()-2*lineWidth(),height()-2*lineWidth());
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if (mColor.isValid() ) {
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//painter.fillRect(rect,mColor);
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if (isEnabled()) {
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painter.setPen(contrast());
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painter.setBrush(mColor);
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} else {
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painter.setBrush(palette().color(QPalette::Disabled,QPalette::Text));
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painter.setBrush(palette().color(QPalette::Disabled,QPalette::Base));
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}
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painter.drawRect(rect);
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painter.drawText(rect,Qt::AlignCenter, mColor.name(QColor::HexArgb));
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} else {
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//painter.fillRect(rect,palette().color(QPalette::Base));
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if (isEnabled()) {
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painter.setBrush(palette().color(QPalette::Text));
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painter.setBrush(palette().color(QPalette::Base));
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} else {
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painter.setBrush(palette().color(QPalette::Disabled,QPalette::Text));
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painter.setBrush(palette().color(QPalette::Disabled,QPalette::Base));
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}
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painter.setPen(contrast());
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painter.setBrush(palette().color(QPalette::Base));
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painter.drawRect(rect);
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painter.drawText(rect,Qt::AlignCenter, tr("NONE"));
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}
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}
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void ColorEdit::mouseReleaseEvent(QMouseEvent *)
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{
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QColor c = QColorDialog::getColor(mColor,nullptr,tr("Color"),
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QColorDialog::ShowAlphaChannel | QColorDialog::DontUseNativeDialog);
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if (c.isValid()) {
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setColor(c);
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}
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}
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#if QT_VERSION_MAJOR >= 6
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void ColorEdit::enterEvent(QEnterEvent *)
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#else
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void ColorEdit::enterEvent(QEvent *)
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#endif
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{
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setCursor(Qt::PointingHandCursor);
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}
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void ColorEdit::leaveEvent(QEvent *)
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{
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setCursor(Qt::ArrowCursor);
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}
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QSize ColorEdit::minimumSizeHint() const
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{
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return sizeHint();
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}
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