mirror of https://gitee.com/openkylin/quarkai.git
232 lines
7.7 KiB
C++
232 lines
7.7 KiB
C++
#include "memorywidget.h"
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#include "util.h"
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#include <QDebug>
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#include <QObject>
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inline QString formatMemory(guint64 size)
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{
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enum {
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K_INDEX,
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M_INDEX,
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G_INDEX,
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T_INDEX
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};
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QList<guint64> factorList;
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factorList.append(G_GUINT64_CONSTANT(1) << 10);//KiB
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factorList.append(G_GUINT64_CONSTANT(1) << 20);//MiB
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factorList.append(G_GUINT64_CONSTANT(1) << 30);//GiB
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factorList.append(G_GUINT64_CONSTANT(1) << 40);//TiB
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if (size < factorList.at(K_INDEX)) {
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if ((guint) size > 1) {
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return QString("%1 %2").arg((guint) size).arg(QObject::tr("byte"));
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}
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else {
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return QString("%1 %2").arg((guint) size).arg(QObject::tr("bytes"));
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}
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} else {
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guint64 factor;
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QString format;
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if (size < factorList.at(M_INDEX)) {
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factor = factorList.at(K_INDEX);
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format = QObject::tr("KiB");
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}else if (size < factorList.at(G_INDEX)) {
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factor = factorList.at(M_INDEX);
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format = QObject::tr("MiB");
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} else if (size < factorList.at(T_INDEX)) {
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factor = factorList.at(G_INDEX);
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format = QObject::tr("GiB");
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} else {
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factor = factorList.at(T_INDEX);
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format = QObject::tr("TiB");
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}
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std::string formatted_result(make_string(g_strdup_printf("%.1f", size / (double)factor)));
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return QString::fromStdString(formatted_result) + format;
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}
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}
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MemoryWidget::MemoryWidget(QWidget *parent)
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: QWidget(parent)
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{
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this->setFixedSize(302, 165);
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circleRadius = 50; //半径
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rectWidth = 100; //文本框宽
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rectHeight = 20; // 文本框高
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center = rect().center();
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center.setX(center.x()/2); //内存圆心，X为窗口的1/4, Y为窗口的1/2
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swapcenter = rect().center();
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swapcenter.setX(swapcenter.x()*3/2); //SWAP圆心，X为窗口的3/4, Y为窗口的1/2
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}
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MemoryWidget::~MemoryWidget()
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{
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}
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void MemoryWidget::paintEvent(QPaintEvent *event)
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{
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QPainter painter;
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painter.begin(this);
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painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing); //反锯齿
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QFont font = painter.font();
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font.setPointSize(22);
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font.setWeight(QFont::Light);
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painter.setFont(font);
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painter.setPen(QPen(QColor("#303030")));
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painter.drawText(QRect(rect().x() + 2, rect().y(), rect().width() - 4, rect().height()), Qt::AlignLeft | Qt::AlignTop, tr("Memory"));//绘制文本
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drawCircle(&painter);
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drawColorPie(&painter);
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drawText(&painter);
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painter.end();
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}
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void MemoryWidget::drawCircle(QPainter *painter)
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{
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painter->save();
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//渐变效果设置
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QRadialGradient circleGradient(center, circleRadius, center);
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circleGradient.setColorAt(0.0, QColor(220, 220, 220));
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circleGradient.setColorAt(0.2, QColor(220, 220, 220));
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circleGradient.setColorAt(0.4, QColor(240, 240, 240));
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circleGradient.setColorAt(1.0, QColor(220, 220, 220));
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QPen pen;
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pen.setColor(Qt::gray);
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pen.setWidth(1);
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painter->setPen(pen);
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painter->setBrush(circleGradient);
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//内存
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painter->drawEllipse(center, circleRadius, circleRadius);
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//SWAP
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painter->drawEllipse(swapcenter, circleRadius, circleRadius);
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painter->restore();
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}
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void MemoryWidget::drawColorPie(QPainter *painter)
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{
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painter->save();
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painter->setPen(Qt::NoPen);
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//内存矩形，绘制扇形需要的参数，圆在矩形内且与矩形相切
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QPointF pieRectLeftTop(center.x()-circleRadius, center.y()-circleRadius);
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QPointF pieRectRightBottom(center.x()+circleRadius, center.y()+circleRadius);
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pieRect = QRectF(pieRectLeftTop, pieRectRightBottom);
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//SWAP矩形范围，，绘制扇形需要的参数，圆在矩形内且与矩形相切
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QPointF swapRectLeftTop(swapcenter.x()-circleRadius, swapcenter.y()-circleRadius);
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QPointF swapRectRightBottom(swapcenter.x()+circleRadius, swapcenter.y()+circleRadius);
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swappieRect = QRectF(swapRectLeftTop, swapRectRightBottom);
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painter->save();
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//颜色设置
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if(mi.percent > 0 && mi.percent < 50)
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painter->setBrush(QColor(0, 255, 0, 128)); //绿
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else if(mi.percent < 80)
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painter->setBrush(QColor(255, 255, 0, 128)); //黄
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else
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painter->setBrush(QColor(255, 0, 0, 128)); //红
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float currentPie = - (360 * (mi.percent/100)); //负数顺时针，0*16为3点钟位置
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painter->drawPie(pieRect, 90*16, currentPie*16); //绘制扇形，90*16为初始，12点钟位置
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painter->restore();
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if(mi.swappercent > 0 && mi.swappercent < 50)
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painter->setBrush(QColor(0, 255, 0, 128)); //绿
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else if(mi.swappercent < 80)
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painter->setBrush(QColor(255, 255, 0, 128)); //黄
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else
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painter->setBrush(QColor(255, 0, 0, 128)); //红
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float swapcurrentPie = - (360 * (mi.swappercent/100)); //负数顺时针
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painter->drawPie(swappieRect, 90*16, swapcurrentPie*16);//绘制扇形，90*16为初始，12点钟位置
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painter->restore();
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}
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void MemoryWidget::drawText(QPainter *painter)
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{
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painter->save();
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//内存百分比矩形
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QPointF topLeft(center.x()-circleRadius, center.y()-circleRadius);
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QPointF bottomRight(center.x()+circleRadius, center.y()+circleRadius);
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QRectF textRect(topLeft, bottomRight);
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//内存状态矩形
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QPointF statustopLeft(center.x() - rectWidth, center.y()+circleRadius);
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QPointF statusbottomRight(center.x() + rectWidth, center.y()+circleRadius+rectHeight);
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QRectF statusRect(statustopLeft, statusbottomRight);
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//SWAP百分比矩形
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QPointF swaptopLeft(swapcenter.x()-circleRadius, swapcenter.y()-circleRadius);
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QPointF swapbottomRight(swapcenter.x()+circleRadius, swapcenter.y()+circleRadius);
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QRectF swaptextRect(swaptopLeft, swapbottomRight);
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//SWAP状态矩形
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QPointF swapstatustopLeft(swapcenter.x() - rectWidth, swapcenter.y() + circleRadius);
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QPointF swapstatusbottomRight(swapcenter.x() + rectWidth, center.y()+circleRadius+rectHeight);
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QRectF swapstatusRect(swapstatustopLeft, swapstatusbottomRight);
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//内存状态内容
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QString statusStr = tr("Used %1(%2%), Total %3").arg(formatMemory(mi.user)).arg(QString::number(mi.percent, 'f', 1)).arg(formatMemory(mi.total));
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//SWAP状态内容
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QString swapstatusStr = tr("Used %1(%2%), Total %3").arg(formatMemory(mi.swapused)).arg(QString::number(mi.swappercent, 'f', 1)).arg(formatMemory(mi.swaptotal));
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painter->save();
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//百分比字体设置
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QFont font;
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font.setPointSize(0.5*circleRadius);
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font.setBold(true);
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painter->setFont(font);
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painter->setPen(Qt::red);
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//绘制内存百分比
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painter->drawText(textRect, Qt::AlignVCenter | Qt::AlignHCenter, QString::number(mi.percent, 'f', 1));
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//绘制SWAP百分比
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painter->drawText(swaptextRect, Qt::AlignVCenter | Qt::AlignHCenter, QString::number(mi.swappercent, 'f', 1));
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painter->restore();
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//状态字体设置
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QFont fontf;
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fontf.setPointSize(0.08*rectWidth);
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fontf.setBold(true);
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painter->setFont(fontf);
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//绘制内存状态
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painter->drawText(statusRect, Qt::AlignVCenter | Qt::AlignHCenter, statusStr);
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//绘制SWAP状态
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painter->drawText(swapstatusRect, Qt::AlignVCenter | Qt::AlignHCenter, swapstatusStr);
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painter->restore();
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}
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void MemoryWidget::onUpdateMemoryStatus()
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{
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glibtop_mem mem;
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glibtop_swap swap;
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glibtop_get_mem(&mem);
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glibtop_get_swap(&swap);
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float swappercent = (swap.total ? (float)swap.used / (float)swap.total : 0.0f);
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float mempercent = (float)mem.user / (float)mem.total;
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mi.percent = mempercent * 100;
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mi.swappercent = swappercent * 100;
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//初始单位为字节，需要修正
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mi.user = mem.user;
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mi.total = mem.total;
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mi.swapused = swap.used;
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mi.swaptotal = swap.total;
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repaint();
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}
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