392 lines
12 KiB
C++
392 lines
12 KiB
C++
/*
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* QRoundProgressBar - a circular progress bar Qt widget.
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*
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* Sintegrial Technologies (c) 2015-now
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*
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* The software is freeware and is distributed "as is" with the complete source codes.
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* Anybody is free to use it in any software projects, either commercial or non-commercial.
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* Please do not remove this copyright message and remain the name of the author unchanged.
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*
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* It is very appreciated if you produce some feedback to us case you are going to use
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* the software.
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*
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* Please send your questions, suggestions, and information about found issues to the
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*
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* sintegrial@gmail.com
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*
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*/
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#include "qroundProgressBar.h"
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#include <QtGui/QPainter>
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#include <QtGui/QPainterPath>
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#include <QDebug>
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#include <QStyleOption>
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//#include <QGSettings>
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QRoundProgressBar::QRoundProgressBar(QWidget *parent) :
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QWidget(parent),
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m_min(0), m_max(100),
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m_value(25),
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m_nullPosition(PositionTop),
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m_barStyle(StyleDonut),
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m_outlinePenWidth(0.96),
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m_dataPenWidth(1),
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m_rebuildBrush(false),
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m_format("%p%"),
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m_decimals(1),
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m_updateFlags(UF_PERCENT)
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{
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settingsStyle();
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}
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void QRoundProgressBar::setRange(double min, double max)
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{
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m_min = min;
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m_max = max;
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if (m_max < m_min)
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qSwap(m_max, m_min);
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if (m_value < m_min)
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m_value = m_min;
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else if (m_value > m_max)
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m_value = m_max;
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if (!m_gradientData.isEmpty())
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m_rebuildBrush = true;
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update();
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}
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void QRoundProgressBar::setMinimum(double min)
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{
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setRange(min, m_max);
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}
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void QRoundProgressBar::setMaximum(double max)
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{
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setRange(m_min, max);
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}
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void QRoundProgressBar::setValue(double val)
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{
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if (m_value != val) {
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if (val < m_min)
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m_value = m_min;
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else if (val > m_max)
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m_value = m_max;
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else
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m_value = val;
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update();
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}
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}
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//定义最小值位置
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void QRoundProgressBar::setNullPosition(double position)
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{
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if (position != m_nullPosition) {
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m_nullPosition = position;
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if (!m_gradientData.isEmpty())
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m_rebuildBrush = true;
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update();
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}
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}
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//设置视觉样式圆环（甜甜圈）风格、饼（派）风格、线型
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void QRoundProgressBar::setBarStyle(QRoundProgressBar::BarStyle style)
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{
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if (style != m_barStyle) {
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m_barStyle = style;
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update();
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}
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}
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//设置轮廓圆笔的宽度。
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void QRoundProgressBar::setOutlinePenWidth(double penWidth)
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{
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if (penWidth != m_outlinePenWidth) {
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m_outlinePenWidth = penWidth;
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update();
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}
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}
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//设置数据圆笔的宽度。
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void QRoundProgressBar::setDataPenWidth(double penWidth)
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{
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if (penWidth != m_dataPenWidth) {
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m_dataPenWidth = penWidth;
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update();
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}
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}
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//设置可见数据的颜色，并使用它们制作渐变画笔。
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//此函数将覆盖widget的`palette（）`来设置动态创建的渐变笔刷
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void QRoundProgressBar::setDataColors(const QGradientStops &stopPoints)
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{
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if (stopPoints != m_gradientData) {
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m_gradientData = stopPoints;
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m_rebuildBrush = true;
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update();
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}
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}
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//定义用于生成当前文本的字符串。
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//％p-用完成的百分比代替。 ％v-由当前值替换。 ％m-由最大值代替。
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//默认值为“％p％”
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void QRoundProgressBar::setFormat(const QString &format)
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{
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if (format != m_format) {
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m_format = format;
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valueFormatChanged();
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}
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}
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//将格式字符串设置为空字符串。 因此，将不会显示任何文本。
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void QRoundProgressBar::resetFormat()
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{
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m_format = QString::null;
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valueFormatChanged();
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}
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//设置要在逗号后显示的小数位数（默认为1）。
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void QRoundProgressBar::setDecimals(int count)
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{
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if (count >= 0 && count != m_decimals) {
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m_decimals = count;
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valueFormatChanged();
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}
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}
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void QRoundProgressBar::paintEvent(QPaintEvent* /*event*/)
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{
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//构造和自定义（例如，设置笔或画笔）painter。 然后画。 记住在绘制后销毁QPainter对象。
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QPainter painter(this);
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painter.save();
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//mainColor 在settingsStyle配置
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painter.setPen(mainColor);
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painter.setBrush(mainColor);
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//在指定的boundingRectangle中创建一个椭圆，并将其作为封闭的子路径添加到painter路径。
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QPainterPath bigCircle;
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bigCircle.addEllipse(65, 13, 266, 266);
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QPainterPath path = bigCircle ;
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painter.drawPath(path);
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//保存当前的画家状态（将状态推送到堆栈上）。 在save（）之后必须有一个相应的restore（）； end（）函数展开堆栈。
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painter.restore();
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double outerRadius = 133;
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QRectF baseRect(198 - outerRadius, 146 - outerRadius, outerRadius * 2, outerRadius * 2);
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QPainter p(this);
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//表示引擎应尽可能对图元的边缘进行抗锯齿。
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p.setRenderHint(QPainter::Antialiasing);
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// data brush
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rebuildDataBrushIfNeeded();
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// background
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drawBackground(p, rect());
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double innerRadius = 133;
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QRectF innerRect = QRectF((198 - outerRadius) + 5, (146 - outerRadius) + 5, (outerRadius - 5) * 2 , (outerRadius - 5) * 2 );
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//calculateInnerRect(baseRect, outerRadius, innerRect, innerRadius);
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double arcStep = 360.0 / (m_max - m_min) * m_value;
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// base circle
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drawBase(p, baseRect,innerRect);
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// data circle
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drawValue(p, baseRect, m_value, arcStep,innerRect, innerRadius);
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// finally draw the bar
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p.end();
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}
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//背景色
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void QRoundProgressBar::drawBackground(QPainter &p, const QRectF &baseRect)
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{
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p.fillRect(baseRect, palette().background());
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}
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//画基础
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void QRoundProgressBar::drawBase(QPainter &p, const QRectF &baseRect,const QRectF &innerRect)
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{
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QStyleOption opt;
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opt.init(this);
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switch (m_barStyle)
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{
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case StyleDonut:
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// p.setPen(QPen(QColor(160, 160, 160), 4, Qt::DotLine, Qt::RoundCap, Qt::RoundJoin));
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// p.setBrush(Qt::NoBrush);
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// p.drawEllipse(QPointF(227, 180),155,155);
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break;
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case StylePie:
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p.setPen(QPen(palette().base().color(), m_outlinePenWidth, Qt::DotLine, Qt::RoundCap, Qt::RoundJoin));
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p.setBrush(palette().base());
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p.drawEllipse(baseRect);
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break;
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case StyleLine:
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p.setPen(QPen(palette().base().color(), m_outlinePenWidth ,Qt::DotLine, Qt::RoundCap, Qt::RoundJoin));
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p.setBrush(Qt::NoBrush);
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p.drawEllipse(baseRect.adjusted(m_outlinePenWidth/2, m_outlinePenWidth/2, -m_outlinePenWidth/2, -m_outlinePenWidth/2));
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break;
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default:;
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}
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}
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//画数据
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void QRoundProgressBar::drawValue(QPainter &p
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, const QRectF &baseRect
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, double value
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, double arcLength
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, const QRectF & innerRect
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, double innerRadius)
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{
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// nothing to draw
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if (value == m_min)
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return;
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// for Pie and Donut styles
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QPainterPath dataPath;
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dataPath.setFillRule(Qt::WindingFill);
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dataPath.moveTo(baseRect.center());
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dataPath.arcTo(baseRect, m_nullPosition, -arcLength);//大家都是先绘制外圆的弧长
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if(m_barStyle == StyleDonut) {
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// draw dount outer
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QPointF currentPoint = dataPath.currentPosition();//绘制完外圆弧长后，获取绘制完的位置绘制一个直线到达内圆
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currentPoint = baseRect.center() + (currentPoint - baseRect.center()) * m_innerOuterRate;//计算内圆的坐标点，m_innerOuterRate替代了原作者写的0.75，代表内圆是外圆的0.75倍
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dataPath.lineTo(currentPoint);//绘制外圆到内圆的直线
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dataPath.moveTo(baseRect.center());//坐标点回到中心准备绘制内圆弧形
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dataPath.arcTo(innerRect, m_nullPosition-arcLength, arcLength);//绘制内圆的弧形
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currentPoint = dataPath.currentPosition();//准备绘制内圆到外圆的直线，形成封闭区域
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currentPoint = baseRect.center() + ((currentPoint - baseRect.center()) * (2-m_innerOuterRate));//绘制内圆到外圆的直线，这里2-m_innerOuterRate其实是对应(1 + (1 -m_innerOuterRate))的
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dataPath.lineTo(currentPoint);
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p.setPen(Qt::NoPen);//这个很重要不然就会有绘制过程的一些轮廓了
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}
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p.setBrush(palette().highlight());
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p.setBrush(ringRunColor);
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p.drawPath(dataPath);
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}
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void QRoundProgressBar::calculateInnerRect(const QRectF &/*baseRect*/, double outerRadius, QRectF &innerRect, double &innerRadius)
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{
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// for Line style
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if (m_barStyle == StyleLine) {
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innerRadius = outerRadius - m_outlinePenWidth;
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} else {
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innerRadius = outerRadius * m_outlinePenWidth;
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}
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double delta = (outerRadius - innerRadius) / 2;
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innerRect = QRectF(delta, delta, innerRadius, innerRadius);
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// innerRect = QRectF(227 - outerRadius, 220 - outerRadius, innerRadius * 2, innerRadius * 2);
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}
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void QRoundProgressBar::drawInnerBackground(QPainter &p, const QRectF &innerRect)
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{
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if (m_barStyle == StyleDonut) {
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p.setBrush(palette().alternateBase());
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p.drawEllipse(innerRect);
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}
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}
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void QRoundProgressBar::drawText(QPainter &p, const QRectF &innerRect, double innerRadius, double value)
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{
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if (m_format.isEmpty())
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return;
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// !!! to revise
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QFont f(font());
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f.setPixelSize(innerRadius * qMax(0.05, (0.35 - (double)m_decimals * 0.08)));
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p.setFont(f);
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QRectF textRect(innerRect);
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p.setPen(palette().text().color());
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p.drawText(textRect, Qt::AlignCenter, valueToText(value));
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}
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QString QRoundProgressBar::valueToText(double value) const
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{
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QString textToDraw(m_format);
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if (m_updateFlags & UF_VALUE)
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textToDraw.replace("%v", QString::number(value, 'f', m_decimals));
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if (m_updateFlags & UF_PERCENT) {
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double procent = (value - m_min) / (m_max - m_min) * 100.0;
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textToDraw.replace("%p", QString::number(procent, 'f', m_decimals));
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}
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if (m_updateFlags & UF_MAX)
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textToDraw.replace("%m", QString::number(m_max - m_min + 1, 'f', m_decimals));
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return textToDraw;
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}
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void QRoundProgressBar::valueFormatChanged()
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{
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m_updateFlags = 0;
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if (m_format.contains("%v"))
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m_updateFlags |= UF_VALUE;
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if (m_format.contains("%p"))
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m_updateFlags |= UF_PERCENT;
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if (m_format.contains("%m"))
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m_updateFlags |= UF_MAX;
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update();
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}
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void QRoundProgressBar::rebuildDataBrushIfNeeded()
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{
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if (m_rebuildBrush) {
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m_rebuildBrush = false;
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QConicalGradient dataBrush;
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dataBrush.setCenter(0.5,0.5);
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dataBrush.setCoordinateMode(QGradient::StretchToDeviceMode);
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// invert colors
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for (int i = 0; i < m_gradientData.count(); i++) {
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dataBrush.setColorAt(1.0 - m_gradientData.at(i).first, m_gradientData.at(i).second);
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}
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// angle
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dataBrush.setAngle(m_nullPosition);
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QPalette p(palette());
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p.setBrush(QPalette::Window,Qt::NoBrush);
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p.setBrush(QPalette::AlternateBase,Qt::NoBrush);
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p.setBrush(QPalette::Highlight, dataBrush);
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setPalette(p);
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}
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}
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QColor QRoundProgressBar::getRingRunColor() const
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{
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return ringRunColor;
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}
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void QRoundProgressBar::setRingRunColor(const QColor &value)
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{
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ringRunColor = value;
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}
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void QRoundProgressBar::switchRunRingColor()
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{
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ringRunColor = QColor(55, 144, 250,255);
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update();
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}
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void QRoundProgressBar::switchStopRingColor()
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{
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ringRunColor = QColor(69, 173, 110,255);
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update();
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}
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/*
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*监听主题
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*/
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void QRoundProgressBar::settingsStyle()
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{
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GsettingSubject * subject = GsettingSubject::getInstance();;
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connect(subject,&GsettingSubject::blackStyle, this,[=](){
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mainColor = QColor(255, 255, 255, 40);
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});
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connect(subject,&GsettingSubject::whiteStyle, this,[=](){
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mainColor = QColor(255, 255, 255, 107);
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});
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subject->iniWidgetStyle();
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}
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