网站建设运营预算,零基础学习网站开发,一个完整的项目策划书,凡科网是什么1、概述 源码放在文章末尾
该项目实现了屏幕拾色器的功能#xff0c;可以根据鼠标指定的位置识别当前位置的颜色
项目功能包含#xff1a; 鼠标按下实时采集鼠标处的颜色。 实时显示颜色值。 支持16进制格式和rgb格式。 实时显示预览颜色。 根据背景色自动计算合适的前景色…1、概述 源码放在文章末尾
该项目实现了屏幕拾色器的功能可以根据鼠标指定的位置识别当前位置的颜色
项目功能包含 鼠标按下实时采集鼠标处的颜色。 实时显示颜色值。 支持16进制格式和rgb格式。 实时显示预览颜色。 根据背景色自动计算合适的前景色。
下面是demo演示 项目部分代码如下所示
#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()
#endifColorWidget *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);
#elseQPixmap pixmap QPixmap::grabWindow(qApp-desktop()-winId(), x, y, 2, 2);
#endifint 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);
}
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