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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "colorbox.h"
#include <QPainter>
#include <QMouseEvent>
static inline QString properName(const QColor &color)
{
return color.name(color.alpha() == 255 ? QColor::HexRgb : QColor::HexArgb);
}
static inline QColor properColor(const QString &str)
{
if (str.isEmpty())
return QColor();
int lalpha = 255;
QString lcolorStr = str;
const QChar hash = QLatin1Char('#');
if (lcolorStr.at(0) == hash && lcolorStr.length() == 9) {
QString alphaStr = lcolorStr;
alphaStr.truncate(3);
lcolorStr.remove(0, 3);
lcolorStr = hash + lcolorStr;
alphaStr.remove(0,1);
bool v;
lalpha = alphaStr.toInt(&v, 16);
if (!v)
lalpha = 255;
}
QColor lcolor(lcolorStr);
if (lcolorStr.contains(hash))
lcolor.setAlpha(lalpha);
return lcolor;
}
static inline int clamp(int x, int lower, int upper)
{
return qBound(lower, x, upper);
}
namespace QmlEditorWidgets {
void ColorBox::setHue(int newHue)
{
if (m_color.hsvHue() == newHue)
return;
int oldAlpha = m_color.alpha();
m_color.setHsv(newHue,m_color.hsvSaturation(),m_color.value());
m_color.setAlpha(oldAlpha);
update();
emit hueChanged();
emit colorChanged();
}
int ColorBox::hue() const
{
return clamp(m_color.hsvHue(), 0, 359);
}
void ColorBox::setAlpha(int newAlpha)
{
if (m_color.alpha() == newAlpha)
return;
m_color.setAlpha(newAlpha);
update();
emit alphaChanged();
emit colorChanged();
}
QString ColorBox::strColor() const
{
return properName(m_color);
}
void ColorBox::setStrColor(const QString &colorStr)
{
if (properName(m_color) == colorStr)
return;
setColor(properColor(colorStr));
}
void ColorBox::setColor(const QColor &color)
{
if (m_color == color)
return;
int oldsaturation = m_color.hsvSaturation();
int oldvalue = m_color.value();
int oldhue = m_color.hsvHue();
int oldAlpha = m_color.alpha();
m_color=color;
update();
if (oldhue != m_color.hsvHue()) emit hueChanged();
if (oldsaturation != saturation()) emit saturationChanged();
if (oldvalue != value()) emit valueChanged();
if (oldAlpha != alpha()) emit alphaChanged();
}
void ColorBox::setSaturation(int newsaturation)
{
if (m_color.hsvSaturation()==newsaturation) return;
int oldAlpha = m_color.alpha();
m_color.setHsv(m_color.hsvHue(),newsaturation,m_color.value());
m_color.setAlpha(oldAlpha);
update();
emit saturationChanged();
emit colorChanged();
}
void ColorBox::setCurrent(int x, int y)
{
QColor newColor;
x = clamp(x, 0, 120);
y = clamp(y, 0, 120);
int oldAlpha = m_color.alpha();
newColor.setHsv(hue(), (x*255) / 120, 255 - (y*255) / 120);
newColor.setAlpha(oldAlpha);
setColor(newColor);
}
void ColorBox::setValue(int newvalue)
{
if (m_color.value()==newvalue) return;
int oldAlpha = m_color.alpha();
m_color.setHsv(m_color.hsvHue(),m_color.hsvSaturation(),newvalue);
m_color.setAlpha(oldAlpha);
update();
emit valueChanged();
emit colorChanged();
}
void ColorBox::paintEvent(QPaintEvent *event)
{
QWidget::paintEvent(event);
QPainter p(this);
if ((m_color.saturation()>1) && (m_color.value()>1))
m_saturatedColor.setHsv(m_color.hsvHue(),255,255);
if ((hue() != m_lastHue) || (m_cache.isNull())) {
m_lastHue = hue();
int fixedHue = clamp(m_lastHue, 0, 359);
QImage cache = QImage(120, 120, QImage::Format_RGB32);
int height = 120;
int width = 120;
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
QColor c;
c.setHsv(fixedHue, (x*255) / width, 255 - (y*255) / height);
cache.setPixel(x, y, c.rgb());
}
}
m_cache = QPixmap::fromImage(cache);
}
p.drawPixmap(5, 5, m_cache);
int x = clamp(m_color.hsvSaturationF() * 120, 0, 119) + 5;
int y = clamp(120 - m_color.valueF() * 120, 0, 119) + 5;
p.setPen(QColor(255, 255, 255, 50));
p.drawLine(5, y, x-1, y);
p.drawLine(x+1, y, width()-7, y);
p.drawLine(x, 5, x, y-1);
p.drawLine(x, y+1, x, height()-7);
}
void ColorBox::mousePressEvent(QMouseEvent *e)
{
// The current cell marker is set to the cell the mouse is pressed in
QPoint pos = e->pos();
m_mousePressed = true;
setCurrent(pos.x() - 5, pos.y() - 5);
}
void ColorBox::mouseReleaseEvent(QMouseEvent * /* event */)
{
if (m_mousePressed)
emit colorChanged();
m_mousePressed = false;
}
void ColorBox::mouseMoveEvent(QMouseEvent *e)
{
if (!m_mousePressed)
return;
QPoint pos = e->pos();
setCurrent(pos.x() - 5, pos.y() - 5);
}
} //QmlEditorWidgets
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