颜色拾取器.zip

#pragma execution_character_set("utf-8") #include "colorwidget.h" #include "qmutex.h" #include "qgridlayout.h" #include "qlabel.h" #include "qlineedit.h" #include "qapplication.h" #include "qtimer.h" #include "qevent.h" #include "qdebug.h" #if (QT_VERSION >= QT_VERSION_CHECK(5,0,0)) #include "qscreen.h" #define deskGeometry qApp->primaryScreen()->geometry() #define deskGeometry2 qApp->primaryScreen()->availableGeometry() #else #include "qdesktopwidget.h" #define deskGeometry qApp->desktop()->geometry() #define deskGeometry2 qApp->desktop()->availableGeometry() #endif ColorWidget *ColorWidget::instance = 0; ColorWidget *ColorWidget::Instance() { if (!instance) { static QMutex mutex; QMutexLocker locker(&mutex); if (!instance) { instance = new ColorWidget; } } return instance; } ColorWidget::ColorWidget(QWidget *parent) : QWidget(parent) { gridLayout = new QGridLayout(this); gridLayout->setSpacing(6); gridLayout->setContentsMargins(11, 11, 11, 11); verticalLayout = new QVBoxLayout(); verticalLayout->setSpacing(0); labColor = new QLabel(this); labColor->setText("+"); labColor->setStyleSheet("background-color: rgb(255, 107, 107);color: rgb(250, 250, 250);"); labColor->setAlignment(Qt::AlignCenter); QFont font; font.setPixelSize(35); font.setBold(true); labColor->setFont(font); QSizePolicy sizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding); sizePolicy.setHorizontalStretch(0); sizePolicy.setVerticalStretch(0); sizePolicy.setHeightForWidth(labColor->sizePolicy().hasHeightForWidth()); labColor->setSizePolicy(sizePolicy); labColor->setMinimumSize(QSize(80, 70)); labColor->setMaximumSize(QSize(80, 70)); labColor->setCursor(QCursor(Qt::CrossCursor)); labColor->setFrameShape(QFrame::StyledPanel); labColor->setFrameShadow(QFrame::Sunken); verticalLayout->addWidget(labColor); label = new QLabel(this); label->setMinimumSize(QSize(0, 18)); label->setStyleSheet("background-color: rgb(0, 0, 0);color: rgb(200, 200, 200);"); label->setAlignment(Qt::AlignCenter); verticalLayout->addWidget(label); gridLayout->addLayout(verticalLayout, 0, 0, 3, 1); labWeb = new QLabel(this); gridLayout->addWidget(labWeb, 0, 1, 1, 1); txtWeb = new QLineEdit(this); gridLayout->addWidget(txtWeb, 0, 2, 1, 1); labRgb = new QLabel(this); gridLayout->addWidget(labRgb, 1, 1, 1, 1); txtRgb = new QLineEdit(this); gridLayout->addWidget(txtRgb, 1, 2, 1, 1); labPoint = new QLabel(this); gridLayout->addWidget(labPoint, 2, 1, 1, 1); txtPoint = new QLineEdit(this); gridLayout->addWidget(txtPoint, 2, 2, 1, 1); label->setText("当前颜色"); labWeb->setText("web值:"); labRgb->setText("rgb值:"); labPoint->setText("坐标值:"); this->setLayout(gridLayout); this->setWindowTitle("屏幕拾色器"); this->setFixedSize(300, 108); cp = QApplication::clipboard(); pressed = false; timer = new QTimer(this); timer->setInterval(100); connect(timer, SIGNAL(timeout()), this, SLOT(showColorValue())); timer->start(); } ColorWidget::~ColorWidget() { } void ColorWidget::mousePressEvent(QMouseEvent *e) { if (labColor->rect().contains(e->pos())) { pressed = true; } } void ColorWidget::mouseReleaseEvent(QMouseEvent *) { pressed = false; } void ColorWidget::showColorValue() { if (!pressed) { return; } int x = QCursor::pos().x(); int y = QCursor::pos().y(); txtPoint->setText(tr("x:%1 y:%2").arg(x).arg(y)); #if (QT_VERSION >= QT_VERSION_CHECK(5,0,0)) QScreen *screen = qApp->primaryScreen(); QPixmap pixmap = screen->grabWindow(0, x, y, 2, 2); #else QPixmap pixmap = QPixmap::grabWindow(qApp->desktop()->winId(), x, y, 2, 2); #endif int red, green, blue; QString strDecimalValue, strHex; if (pixmap.isNull()) { return; } QImage image = pixmap.toImage(); if (image.valid(0, 0)) { QColor color = image.pixel(0, 0); red = color.red(); green = color.green(); blue = color.blue(); QString strRed = tr("%1").arg(red & 0xFF, 2, 16, QChar('0')); QString strGreen = tr("%1").arg(green & 0xFF, 2, 16, QChar('0')); QString strBlue = tr("%1").arg(blue & 0xFF, 2, 16, QChar('0')); strDecimalValue = tr("%1, %2, %3").arg(red).arg(green).arg(blue); strHex = tr("#%1%2%3").arg(strRed.toUpper()).arg(strGreen.toUpper()).arg(strBlue.toUpper()); } //根据背景色自动计算合适的前景色 QColor color(red, green, blue); double gray = (0.299 * color.red() + 0.587 * color.green() + 0.114 * color.blue()) / 255; QColor textColor = gray > 0.5 ? Qt::black : Qt::white; QString str = tr("background:rgb(%1);color:%2").arg(strDecimalValue).arg(textColor.name()); labColor->setStyleSheet(str); txtRgb->setText(strDecimalValue); txtWeb->setText(strHex); }