QGraphicsItem *addSmiley() {
QPen thickPen(Qt::black);
thickPen.setWidth(2);
// add face
QGraphicsEllipseItem *face = new QGraphicsEllipseItem(QRect(-50, -50, 100, 100));
face->setPen(Qt::NoPen);
face->setBrush(Qt::yellow);
// add eyes
QGraphicsEllipseItem *leftEye = new QGraphicsEllipseItem(QRectF(-6, -12, 12, 24), face);
leftEye->setPen(thickPen);
leftEye->setBrush(Qt::white);
leftEye->setPos(-15, -25);
QGraphicsEllipseItem *rightEye = new QGraphicsEllipseItem(QRectF(-6, -12, 12, 24), face);
rightEye->setPen(thickPen);
rightEye->setBrush(Qt::white);
rightEye->setPos(15, -25);
// add smile
QPainterPath smileArc;
QRect rect(-33, -15, 66, 50);
smileArc.arcMoveTo(rect, 0);
smileArc.arcTo(rect, 0, -180);
QGraphicsPathItem *smile = new QGraphicsPathItem(smileArc, face);
smile->setPen(thickPen);
return face;
}
void TaskItemDelegate::paintPriorityHeader(QPainter* painter, const QRectF& rect, const QModelIndex &index) const
{
painter->save();
//Draw colored gradient as priority background
QLinearGradient gradient(rect.topLeft(), rect.bottomRight());
gradient.setColorAt(0, itemPriorityColor(index));
gradient.setColorAt(1, Qt::transparent);
int h = QApplication::fontMetrics().height();
QPainterPath path;
path.moveTo(rect.bottomLeft());
path.quadTo(rect.bottomLeft()+QPointF(0, -h), rect.bottomLeft()+QPointF(2, -h));
path.lineTo(rect.bottomRight()-QPointF(2, h));
path.quadTo(rect.bottomRight()+QPointF(0, -h), rect.bottomRight());
painter->setBrush(Qt::NoBrush);
QPen thickPen(itemPriorityColor(index));
thickPen.setWidth(2);
painter->setPen(thickPen);
painter->drawPath(path);
// Draw priority text
QString priority = index.data(Qt::DisplayRole).toString();
painter->setPen(Plasma::Theme::defaultTheme()->color(Plasma::Theme::TextColor));
painter->setBrush(Qt::NoBrush);
painter->drawText(rect.bottomLeft()+QPoint(MARGIN, -2*MARGIN) ,priority);
painter->restore();
}
void GraphicTimeLine::paint(QPainter *painter, const QStyleOptionGraphicsItem */*option*/, QWidget */*widget*/) {
// draw a non-opaque white rectangle for the background
painter->setPen(Qt::NoPen);
painter->setBrush(QColor(255, 255, 255, 200));
painter->drawRect(boundingRect());
QFont normalFont("Liberation Sans",9,QFont::Normal);
QPen thickPen(Qt::black, 2);
QPen thinPen(Qt::black, 1);
AstroDate currentDate = itsScene->getStartDay();
AstroDate endDate = itsScene->getEndDay();
painter->setPen(thickPen);
painter->setFont(normalFont);
zoom_level zl = itsScene->getZoomLevel();
if (zl == ZM_MONTH) {
unsigned int month;
int xMonthPos, xWeekPos;
//draw the first week tick
QString weekStr = QString::number(currentDate.getWeek());
painter->drawLine(0, 15, 0, 17);
painter->drawText(-35, 27, "Week: ");
painter->drawText(16 - (weekStr.length()-1)*5, 27, weekStr);
// draw the base time line
painter->setPen(thinPen);
painter->drawLine(0, 15, itsWidth, 15);
unsigned int lastMonth(currentDate.getMonth());
currentDate = currentDate.addDays(7);
QString monthStr;
while (currentDate <= endDate) {
month = currentDate.getMonth();
if (month != lastMonth) { // draw month inset
xMonthPos = itsScene->time2xPos(AstroDate(1,month,currentDate.getYear())) - itsScenePos;
painter->setPen(thickPen);
painter->drawLine(xMonthPos, 5, xMonthPos, 17);
painter->setPen(thinPen);
monthStr = QString(MONTH_NAMES_ENG[month-1]) + " (" + QString::number(currentDate.getYear()) + ")";
painter->drawText(QPoint(xMonthPos + 50 - monthStr.length()/2, 11), monthStr);
lastMonth = month;
}
xWeekPos = itsScene->time2xPos(currentDate) - itsScenePos;
painter->drawLine(xWeekPos, 15, xWeekPos, 17); // week ticks
weekStr = QString::number(currentDate.getWeek());
painter->drawText(QPoint(xWeekPos + 16 - (weekStr.length()-1)*5, 27), weekStr);
currentDate = currentDate.addDays(7);
}
xWeekPos = itsScene->time2xPos(currentDate) - itsScenePos;
painter->drawLine(xWeekPos, 15, xWeekPos, 17); // last week thick
}
else if (zl == ZM_WEEK) {
unsigned int week;
int xDayPos, xWeekPos;
//draw the first day tick
QString dayStr = QString::number(currentDate.getDay());
QString weekStr;
painter->drawLine(0, 15, 0, 17);
painter->drawText(-35, 27, "Day:");
painter->drawText(20 - (dayStr.length()-1)*5, 27, dayStr);
// draw the base time line
painter->setPen(thinPen);
painter->drawLine(0, 15, itsWidth, 15);
unsigned int lastWeek(currentDate.getWeek());
currentDate = currentDate.addDays(1);
while (currentDate <= endDate) {
week = currentDate.getWeek();
if (week != lastWeek) { // draw week inset
xWeekPos = itsScene->time2xPos(currentDate) - itsScenePos;
painter->setPen(thickPen);
painter->drawLine(xWeekPos, 5, xWeekPos, 17);
painter->setPen(thinPen);
weekStr = "week " + QString::number(currentDate.getWeek()) + " ("
+ MONTH_SHORT_NAMES_ENG[currentDate.getMonth()-1] + " " + QString::number(currentDate.getYear()) + ")";
painter->drawText(QPoint(xWeekPos + 120 /*- weekStr.length()*4*/, 11), weekStr);
lastWeek = week;
}
xDayPos = itsScene->time2xPos(currentDate) - itsScenePos;
painter->drawLine(xDayPos, 15, xDayPos, 17); // day ticks
dayStr = QString::number(currentDate.getDay());
painter->drawText(QPoint(xDayPos + 20 - (dayStr.length()-1)*5, 27), dayStr);
currentDate = currentDate.addDays(1);
}
xDayPos = itsScene->time2xPos(currentDate) - itsScenePos;
painter->drawLine(xDayPos, 15, xDayPos, 17); // last day thick
}
else if (zl == ZM_DAY) {
painter->drawText(-65, 27, "Hour (UTC)");
// draw the base time line
painter->setPen(thinPen);
painter->drawLine(0, 15, itsWidth, 15);
QString dayStr;
int xDayPos;
while (currentDate <= endDate) {
xDayPos = itsScene->time2xPos(currentDate) - itsScenePos;
dayStr = QString(DAY_SHORT_NAMES_ENG[currentDate.getDayOfTheWeek()]) + " "
+ QString::number(currentDate.getDay()) + " "
+ MONTH_SHORT_NAMES_ENG[currentDate.getMonth()-1] + ", "
+ QString::number(currentDate.getYear());
painter->drawText(xDayPos + 15, 13, dayStr);
painter->drawLine(xDayPos, 5, xDayPos, 19);
for (unsigned int hour = 0; hour < 24; ++hour) {
painter->drawLine(xDayPos + hour * 5, 15, xDayPos + hour * 5, 17);
}
painter->drawLine(xDayPos + 60, 15, xDayPos + 60, 19); // 12:00 hour longer tick
currentDate = currentDate.addDays(1);
}
xDayPos = itsScene->time2xPos(currentDate) - itsScenePos;
painter->drawLine(xDayPos, 5, xDayPos, 19); // last day thick
}
else if (zl == ZM_HOUR) {
painter->drawText(-65, 27, "Hour (UTC)");
// draw the base time line
painter->setPen(thinPen);
QString dayStr;
int xDayPos;
while (currentDate <= endDate) {
xDayPos = itsScene->time2xPos(currentDate) - itsScenePos;
dayStr = QString(DAY_NAMES_ENG[currentDate.getDayOfTheWeek()]) + " "
+ QString::number(currentDate.getDay()) + " "
+ MONTH_NAMES_ENG[currentDate.getMonth()-1] + ", "
+ QString::number(currentDate.getYear());
painter->drawText(xDayPos + 180, 13, dayStr);
painter->drawImage(xDayPos -1, 3, *itsTimeLineDayImage1);
currentDate = currentDate.addDays(1);
}
xDayPos = itsScene->time2xPos(currentDate) - itsScenePos;
}
else if (zl == ZM_MIN) {
painter->drawText(-65, 27, "Hour (UTC)");
// draw the base time line
QString dayStr;
int xDayPos;
painter->setPen(thinPen);
while (currentDate <= endDate) {
xDayPos = itsScene->time2xPos(currentDate) - itsScenePos;
dayStr = QString(DAY_NAMES_ENG[currentDate.getDayOfTheWeek()]) + " "
+ QString::number(currentDate.getDay()) + " "
+ MONTH_NAMES_ENG[currentDate.getMonth()-1] + ", "
+ QString::number(currentDate.getYear());
painter->drawText(xDayPos + 180, 13, dayStr);
painter->drawImage(xDayPos -7, 0, *itsTimeLineDayImage2);
currentDate = currentDate.addDays(1);
}
xDayPos = itsScene->time2xPos(currentDate) - itsScenePos;
}
// painter->setPen(QPen(Qt::magenta, 0.5));
// painter->drawRect(boundingRect());
// for test purpose: draw boundings
// painter->setPen(QPen(Qt::magenta, 1.0));
// painter->setBrush(Qt::NoBrush);
// painter->drawRect(boundingRect());
}
void Histgram::draw(QPainter *painter)
{
QPen thickPen(palette().foreground(), 4);
QPen thinPen(palette().foreground(), 0.5);
// 默认0点坐标在左上角...
QPoint zeroPoint(width() / WidthSlices,
(HeightSlices - 2) * height() / HeightSlices);
int xaxisLength = XaixsLengthRatio * width();
int yaxisLength = YaxisLengthRatio * height();
painter->setPen(thickPen);
// 画出Y轴
painter->drawLine(zeroPoint.x(), zeroPoint.y(),
zeroPoint.x(), zeroPoint.y() - yaxisLength);
// 0_0 默认0点坐标在左上角...
// 画出X轴
painter->drawLine(zeroPoint.x(), zeroPoint.y(),
zeroPoint.x() + xaxisLength, zeroPoint.y());
// 画出Y轴刻度
if (voterNums <= 10) // 检查投票总人数是否为0
{
if (!voterNums)
{
return;
}
YaxisSlices = 1;//投票人数少于等于10的时候改为1
}
int yaxisScaleNums = qRound((float)voterNums / (float)YaxisSlices); // 刻度数目
int yaxisScaleSpace = yaxisLength / yaxisScaleNums; // 刻度间隔
for (int i = 1; i <= yaxisScaleNums; i++)
{
painter->setPen(thickPen);
painter->drawLine(zeroPoint.x() - ScaleSize, zeroPoint.y() - i * yaxisScaleSpace,
zeroPoint.x(), zeroPoint.y() - i * yaxisScaleSpace);
// 是“-”...原坐标0点在左上角问题...
QString num = QString("%1").arg(i * YaxisSlices);
painter->drawText(zeroPoint.x() - yFrontSpace, zeroPoint.y() - i * yaxisScaleSpace, num);
// 如果纵轴虚线被设置成显示状态
if (yAxisDashLineFlag)
{
painter->setPen(QPen(Qt::black, 0.1, Qt::DashLine, Qt::SquareCap));
painter->drawLine(zeroPoint.x(), zeroPoint.y() - i * yaxisScaleSpace,
zeroPoint.x() + xaxisLength, zeroPoint.y() - i * yaxisScaleSpace);
}
}
// 画出柱状图和X轴
int xaxisScaleNums = columnNums; // 刻度数目等于列数
int xaxisScaleSpace = xaxisLength / xaxisScaleNums; // 刻度间隔
int rectWidth = rectRatio * xaxisScaleSpace; // 设置柱状条宽度
FontSize = (width() + height()) / 70; // 设置字体大小
xFrontSpace = (width() + height()) / 45; // 设置字离X轴的距离
QFont font("Arial",FontSize,QFont::Bold,true); // 设置字体
for (int i = 1; i <= columnNums; i++)
{
// 画出X轴刻度
painter->setPen(thickPen);
painter->drawLine(zeroPoint.x() + i * xaxisScaleSpace, zeroPoint.y(),
zeroPoint.x() + i * xaxisScaleSpace, zeroPoint.y() + ScaleSize);
// 画出选项
painter->setFont(font);
painter->drawText(zeroPoint.x() + i * xaxisScaleSpace -(xaxisScaleSpace + FontSize * drawData->at(i - 1).getOptionName().length()) /2, // 文字的位置在每两个刻度的中间
zeroPoint.y() + xFrontSpace,
drawData->at(i - 1).getOptionName());
// 画柱状图
painter->setRenderHint(QPainter::Antialiasing, true);
thinPen.setColor("black");
painter->setPen(thickPen);
// style determined by rectangelMetirial
switch (rectangleStyle)
{
case 1:
{
painter->setBrush(QBrush(colorSet->at(i), Qt::SolidPattern));
break;
}
case 2:
{
painter->setBrush(QBrush(colorSet->at(i), Qt::Dense5Pattern));
break;
}
case 3:
{
painter->setBrush(QBrush(colorSet->at(i), Qt::CrossPattern));
break;
}
default:
{
// 默认为纯色
painter->setBrush(QBrush(colorSet->at(i), Qt::SolidPattern));
}
}
// 如果被设置成显示正确答案
if (disCorrectAnswerFlag)
{
// 如果是正确答案，设置成绿色，否则为红色
if (drawData->at(i - 1).getOptionName() == correctAnswer)
{
painter->setBrush(QBrush("green", Qt::SolidPattern));
}
else
{
painter->setBrush(QBrush("red", Qt::SolidPattern));
}
}
// 长方形左上角坐标
int rectHeight = qRound(yaxisLength * ((float)drawData->at(i - 1).getVoterNum() / (float)voterNums));
int rectX = zeroPoint.x() + i * xaxisScaleSpace - (xaxisScaleSpace + rectWidth) / 2;
int rectY = zeroPoint.y() - rectHeight;
painter->drawRect(rectX, rectY, rectWidth, rectHeight);
// 画出各项投票人数及其所占比例
painter->setFont(font);
QString nums = QString("%1").arg(drawData->at(i - 1).getVoterNum()); // 将投票人数转换成字符串
QString ratio = QString("%1").arg((float)drawData->at(i - 1).getVoterNum() \
/ (float)voterNums * 100); // 算出比例，专程字符串
if (ratio.size() > precision + 1)
{
ratio.resize(precision + 1); // 只显示precision位小数，算上小数点故+1
}
ratio += "%";
QString text = nums + "(" + ratio + ")";
painter->drawText(rectX + (rectWidth - FontSize * (text.length() - 3)) / 2, \
rectY - FontSize / 2, text); // 3 是试出来的... - -!
}
// 画出题目名称
QFont titleFont("Arial",FontSize,QFont::Bold,true);
painter->setFont(titleFont);
painter->drawText(zeroPoint.x(), FontSize, questionName);
}