光晕日历 自己实现 绘制日历的工程

#include "widget.h" #include <QPainter> ShadowCalendar::ShadowCalendar(QWidget *parent) : QWidget(parent) { setMouseTracking(true); int d=1; int m = 3; for (int row = 0; row < 6; row++) { for (int column = 0; column < 7; column++) { DateItem item ; item.year = 2024; item.month =m; item .day =d; d++; if(d>=31){ m++; d=1; } dateItem[row][column] =item; } } } ShadowCalendar::~ShadowCalendar() { } void ShadowCalendar::updateCalendar(const QDate &selectDate) { this->selectDate = selectDate; } void ShadowCalendar::leaveEvent(QEvent *) { testAttribute(Qt::WidgetAttribute::WA_UnderMouse); update(); } void ShadowCalendar::mouseMoveEvent(QMouseEvent *) { testAttribute(Qt::WidgetAttribute::WA_Hover); update(); } void ShadowCalendar::paintEvent(QPaintEvent *) { QPainter painter(this); painter.setRenderHints(QPainter::Antialiasing); int sw = 336; int sh = 336; qreal scaleX = this->width() * 1.0 / sw; qreal scaleY = this->height() * 1.0 / sh; painter.scale(scaleX, scaleY); painter.setPen(Qt::NoPen); painter.fillRect(0, 0, sw, sh, bgColor); qreal iw = sw / 7.0; qreal ih = sh / 7.0; //mask QPointF globalpoint = this->mapFromGlobal(QCursor::pos()); const QPointF &point = QPointF(globalpoint.x() / scaleX, globalpoint.y() / scaleY); //绘制光晕背景 if (this->underMouse()) { int effectradius = 58; painter.setCompositionMode(QPainter::CompositionMode_DestinationIn); QRadialGradient radialGrad(point, effectradius); radialGrad.setColorAt(0, QColor(0, 0, 0, 0)); radialGrad.setColorAt(1, QColor(0, 0, 0, 255)); painter.setBrush(radialGrad); painter.drawEllipse(point, effectradius, effectradius); painter.setCompositionMode(QPainter::CompositionMode_DestinationOver); painter.setBrush(Qt::NoBrush); for (int row = 0; row < 6; row++) { for (int column = 0; column < 7; column++) { QRectF rect = QRectF(column * iw, (row + 1) * ih, iw, ih).adjusted(3, 3, -3, -3); if (rect.contains(point)) { painter.save(); painter.setCompositionMode(QPainter::CompositionMode_SourceOver); painter.setPen(QPen(QColor(220, 220, 220, 160), 2)); painter.drawRoundedRect(rect, 2, 2); painter.restore(); continue; } else { painter.setPen(QPen(shadowColor, 2)); } painter.drawRoundedRect(rect, 2, 2); } } //绘制圆形的光晕底层背景 painter.fillRect(0, 0, sw, sh, QColor(200, 200, 200, 50)); } //绘制头部中文数字,先设置图像叠加模式为源在上面 painter.setCompositionMode(QPainter::CompositionMode_SourceOver); painter.setPen(textColor); QStringList listHead; listHead << "一" << "二" << "三" << "四" << "五" << "六" << "日"; for (int i = 0; i < 7; i++) { painter.drawText(i * iw, 0, iw, ih, Qt::AlignCenter, listHead.at(i)); } //绘制日期 for (int row = 0; row < 6; row++) { for (int column = 0; column < 7; column++) { if (dateItem[row][column].day > 0) { QRectF rect = QRectF(column * iw, (row + 1) * ih, iw, ih).adjusted(3, 3, -3, -3); //如果是选中的日期则突出绘制背景 if (QDate::currentDate() == QDate(dateItem[row][column].year, dateItem[row][column].month, dateItem[row][column].day)) { painter.setPen(QPen(selectColor, 2)); painter.setBrush(Qt::NoBrush); //如果和光晕效果重叠则边框高亮 if (rect.contains(point)) { painter.setPen(QPen(selectColor.lighter(), 2)); } //绘制圆角边框 painter.drawRoundedRect(rect, 2, 2); //绘制里边背景 painter.setPen(Qt::NoPen); painter.setBrush(selectColor); painter.drawRoundedRect(rect.adjusted(4, 4, -4, -4), 2, 2); } painter.setPen(textColor); painter.drawText(rect, Qt::AlignCenter, QString::number(dateItem[row][column].day)); } } } } QColor ShadowCalendar::getBgColor() const { return bgColor; } QColor ShadowCalendar::getTextColor() const { return textColor; } QColor ShadowCalendar::getShadowColor() const { return shadowColor; } QColor ShadowCalendar::getSelectColor() const { return selectColor; } QSize ShadowCalendar::sizeHint() const { return QSize (50,50); } QSize ShadowCalendar::minimumSizeHint() const { return QSize(40,40); } void ShadowCalendar::setBgColor(const QColor &bgColor) { this->bgColor = bgColor; } void ShadowCalendar::setTextColor(const QColor &textColor) { this->textColor =textColor; } void ShadowCalendar::setShadowColor(const QColor &shadowColor) { this->shadowColor= shadowColor; } void ShadowCalendar::setSelectColor(const QColor &selectColor) { this ->selectColor= selectColor; }