新增颜色拾取器

README.md

@@ -22,3 +22,4 @@ Qt编写的一些开源的demo，包括串口调试助手、网络调试助手
 | 16 | pngtool | PNG图片警告去除工具 |
 | 17 | savelog | 日志重定向输出类 |
 | 18 | saveruntime | 运行时间记录类 |
+| 19 | colorwidget | 颜色拾取器 |

colorwidget/colorwidget.cpp

@@ -0,0 +1,172 @@
+#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 "qdesktopwidget.h"
+#include "qtimer.h"
+#include "qevent.h"
+#include "qdebug.h"
+
+#if (QT_VERSION > QT_VERSION_CHECK(5,0,0))
+#include "qscreen.h"
+#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("当前颜色显示");
+    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(270, 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));
+    QString strDecimalValue, strHex, strTextColor;
+    int red, green, blue;
+
+#if (QT_VERSION <= QT_VERSION_CHECK(5,0,0))
+    QPixmap pixmap = QPixmap::grabWindow(QApplication::desktop()->winId(), x, y, 2, 2);
+#else
+    QScreen *screen = QApplication::primaryScreen();
+    QPixmap pixmap = screen->grabWindow(QApplication::desktop()->winId(), x, y, 2, 2);
+#endif
+
+    if (!pixmap.isNull()) {
+        QImage image = pixmap.toImage();
+
+        if (!image.isNull()) {
+            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());
+            }
+        }
+    }
+
+    if (red > 200 && green > 200 && blue > 200) {
+        strTextColor = "10, 10, 10";
+    } else {
+        strTextColor = "255, 255, 255";
+    }
+
+    QString str = tr("background-color: rgb(%1);color: rgb(%2)").arg(strDecimalValue).arg(strTextColor);
+    labColor->setStyleSheet(str);
+    txtRgb->setText(strDecimalValue);
+    txtWeb->setText(strHex);
+}

colorwidget/colorwidget.h

@@ -0,0 +1,55 @@
+#ifndef COLORWIDGET_H
+#define COLORWIDGET_H
+
+#include <QWidget>
+
+class QGridLayout;
+class QVBoxLayout;
+class QLabel;
+class QLineEdit;
+
+#ifdef quc
+#if (QT_VERSION < QT_VERSION_CHECK(5,7,0))
+#include <QtDesigner/QDesignerExportWidget>
+#else
+#include <QtUiPlugin/QDesignerExportWidget>
+#endif
+
+class QDESIGNER_WIDGET_EXPORT ColorWidget : public QWidget
+#else
+class ColorWidget : public QWidget
+#endif
+
+{
+    Q_OBJECT
+public:
+    static ColorWidget *Instance();
+    explicit ColorWidget(QWidget *parent = 0);
+    ~ColorWidget();    
+
+protected:
+    void mousePressEvent(QMouseEvent *);
+    void mouseReleaseEvent(QMouseEvent *);
+
+private:
+    static ColorWidget *instance;
+    QClipboard *cp;
+    bool pressed;
+    QTimer *timer;
+
+    QGridLayout *gridLayout;
+    QVBoxLayout *verticalLayout;
+    QLabel *labColor;
+    QLabel *label;
+    QLabel *labWeb;
+    QLineEdit *txtWeb;
+    QLabel *labRgb;
+    QLineEdit *txtRgb;
+    QLabel *labPoint;
+    QLineEdit *txtPoint;
+
+private Q_SLOTS:
+    void showColorValue();
+};
+
+#endif // COLORWIDGET_H

colorwidget/colorwidget.pro

@@ -0,0 +1,18 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2017-01-05T22:11:54
+#
+#-------------------------------------------------
+
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+TARGET      = colorwidget
+TEMPLATE    = app
+DESTDIR     = $$PWD/../bin
+CONFIG      += warn_off
+
+SOURCES     += main.cpp
+SOURCES     += colorwidget.cpp
+HEADERS     += colorwidget.h

colorwidget/main.cpp

@@ -0,0 +1,30 @@
+#pragma execution_character_set("utf-8")
+
+#include "colorwidget.h"
+#include <QApplication>
+#include <QTextCodec>
+#include <QIcon>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    a.setFont(QFont("Microsoft Yahei", 9));
+
+#if (QT_VERSION <= QT_VERSION_CHECK(5,0,0))
+#if _MSC_VER
+    QTextCodec *codec = QTextCodec::codecForName("gbk");
+#else
+    QTextCodec *codec = QTextCodec::codecForName("utf-8");
+#endif
+    QTextCodec::setCodecForLocale(codec);
+    QTextCodec::setCodecForCStrings(codec);
+    QTextCodec::setCodecForTr(codec);
+#else
+    QTextCodec *codec = QTextCodec::codecForName("utf-8");
+    QTextCodec::setCodecForLocale(codec);
+#endif
+
+    ColorWidget::Instance()->show();
+
+    return a.exec();
+}