Qt-QPalette-调色板学习

已经很久没有更新博客了，一是因为换了公司，完全是断网开发了，没有时间来写博客，最主要的就是温水煮青蛙，自己在舒适的环境中越来越懒了，最近打算强制自己更新一波。不知道能坚持多久。由于目前没有具体的Qt项目，智能更具书本内容来写博客。最为一种数据搬运和记录。本文内容来之Qt开发及实例第三版

 

QPalette类主要有两个基本概念，一个是ColorGroup，另一个是ColorRole。其中ColorGroup指的是一下三种不同的状态
1. QPalette::Active: 获得焦点的状态
2. QPalette::Inactive: 未获得焦点的状态
3. QPalette::Disable:不可用状态
其中Active和Inactive状态在通常情况下，颜色显示是一致的。也可以根据需求设置为不一样的颜色。

ColorRole指的是颜色的主题，即对窗体中不同部位颜色的分类。例如QPalette::Window是指背景色QPalette::WindowText指的是前景色，等等。
 

下面是运行代码截图

下面是源代码分享
palette.h

  

   

    

     

    
    

     

      #ifndef PALETTE_H
     
    
   

    

     

    
    

     

      #define PALETTE_H
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #include <QDialog>
     
    
   

    

     

    
    

     

      #include <QComboBox>
     
    
   

    

     

    
    

     

      #include <QLabel>
     
    
   

    

     

    
    

     

      #include <QTextEdit>
     
    
   

    

     

    
    

     

      #include <QPushButton>
     
    
   

    

     

    
    

     

      #include <QLineEdit>
     
    
   

    

     

    
    

     

      class Palette : public QDialog
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

          Q_OBJECT
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      public:
     
    
   

    

     

    
    

     
    Palette(QWidget *parent = 0);
     
    
   

    

     

    
    

     

          ~Palette();
     
    
   

    

     

    
    

     
    void createCtrlFrame();			//完成窗体左半部分颜色选择区的创建
     
    
   

    

     

    
    

     
    void createContentFrame();		//完成窗体右半部分的创建
     
    
   

    

     

    
    

     
    void fillColorList(QComboBox *comboBox);
     
    
   

    

     

    
    

     
    //完成向颜色下拉列表框中插入颜色的工作
     
    
   

    

     

    
    

     

      private slots:
     
    
   

    

     

    
    

     
    void ShowWindow();
     
    
   

    

     

    
    

     
    void ShowWindowText();
     
    
   

    

     

    
    

     
    void ShowButton();
     
    
   

    

     

    
    

     
    void ShowButtonText();
     
    
   

    

     

    
    

     
    void ShowBase();
     
    
   

    

     

    
    

     

      private:
     
    
   

    

     

    
    

     

          QFrame *ctrlFrame;                  //颜色选择面板
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QLabel *windowLabel;
     
    
   

    

     

    
    

     

          QComboBox *windowComboBox;
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QLabel *windowTextLabel;
     
    
   

    

     

    
    

     

          QComboBox *windowTextComboBox;
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QLabel *buttonLabel;
     
    
   

    

     

    
    

     

          QComboBox *buttonComboBox;
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QLabel *buttonTextLabel;
     
    
   

    

     

    
    

     

          QComboBox *buttonTextComboBox;
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QLabel *baseLabel;
     
    
   

    

     

    
    

     

          QComboBox *baseComboBox;
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QFrame *contentFrame;              	//具体显示面板
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QLabel *label1;
     
    
   

    

     

    
    

     

          QComboBox *comboBox1;
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QLabel *label2;
     
    
   

    

     

    
    

     

          QLineEdit *lineEdit2;
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

          QTextEdit *textEdit;
     
    
   

    

     

    
    

     

          QPushButton *OkBtn;
     
    
   

    

     

    
    

     

          QPushButton *CancelBtn;
     
    
   

    

     

    
    

     

      };
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #endif // PALETTE_H
     
    
  
 

 

 

   

    

     

      

     
     

      

       #include "palette.h"
      
     
    

     

      

     
     

      

       #include <QHBoxLayout>
      
     
    

     

      

     
     

      

       #include <QGridLayout>
      
     
    

     

      

     
     

      

       Palette::Palette(QWidget *parent)
      
     
    

     

      

     
     

      

           : QDialog(parent)
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      
    createCtrlFrame();
      
     
    

     

      

     
     

      
    createContentFrame();
      
     
    

     

      

     
     

      

           QHBoxLayout *mainLayout =new QHBoxLayout(this);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(ctrlFrame);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(contentFrame);
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       Palette::~Palette()
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       void Palette::createCtrlFrame()
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      

           ctrlFrame =new QFrame;                  //颜色选择面板
      
     
    

     

      

     
     

      

           windowLabel =new QLabel(tr("QPalette::Window: "));
      
     
    

     

      

     
     

      

           windowComboBox =new QComboBox;			//创建一个QComboBox对象
      
     
    

     

      

     
     

      
    fillColorList(windowComboBox);			
      
     
    

     

      

     
     

      
    connect(windowComboBox,SIGNAL(activated(int)),this,SLOT(ShowWindow()));
      
     
    

     

      

     
     

      

           windowTextLabel =new QLabel(tr("QPalette::WindowText: "));
      
     
    

     

      

     
     

      

           windowTextComboBox =new QComboBox;
      
     
    

     

      

     
     

      
    fillColorList(windowTextComboBox);
      
     
    

     

      

     
     

      
    connect(windowTextComboBox,SIGNAL(activated(int)),this,SLOT(ShowWindowText()));
      
     
    

     

      

     
     

      

           buttonLabel =new QLabel(tr("QPalette::Button: "));
      
     
    

     

      

     
     

      

           buttonComboBox =new QComboBox;
      
     
    

     

      

     
     

      
    fillColorList(buttonComboBox);
      
     
    

     

      

     
     

      
    connect(buttonComboBox,SIGNAL(activated(int)),this,SLOT(ShowButton()));
      
     
    

     

      

     
     

      

           buttonTextLabel =new QLabel(tr("QPalette::ButtonText: "));
      
     
    

     

      

     
     

      

           buttonTextComboBox =new QComboBox;
      
     
    

     

      

     
     

      
    fillColorList(buttonTextComboBox);
      
     
    

     

      

     
     

      
    connect(buttonTextComboBox,SIGNAL(activated(int)),this,SLOT(ShowButtonText()));
      
     
    

     

      

     
     

      

           baseLabel =new QLabel(tr("QPalette::Base: "));
      
     
    

     

      

     
     

      

           baseComboBox =new QComboBox;
      
     
    

     

      

     
     

      
    fillColorList(baseComboBox);
      
     
    

     

      

     
     

      
    connect(baseComboBox,SIGNAL(activated(int)),this,SLOT(ShowBase()));
      
     
    

     

      

     
     

      

           QGridLayout *mainLayout=new QGridLayout(ctrlFrame);
      
     
    

     

      

     
     

      

           mainLayout->setSpacing(20);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(windowLabel,0,0);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(windowComboBox,0,1);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(windowTextLabel,1,0);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(windowTextComboBox,1,1);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(buttonLabel,2,0);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(buttonComboBox,2,1);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(buttonTextLabel,3,0);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(buttonTextComboBox,3,1);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(baseLabel,4,0);
      
     
    

     

      

     
     

      

           mainLayout->addWidget(baseComboBox,4,1);
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       void Palette::createContentFrame()
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      

           contentFrame =new QFrame;                	//具体显示面板
      
     
    

     

      

     
     

      

           label1 =new QLabel(tr("请选择一个值："));
      
     
    

     

      

     
     

      

           comboBox1 =new QComboBox;
      
     
    

     

      

     
     

      

           label2 = new QLabel(tr("请输入字符串: "));
      
     
    

     

      

     
     

      

           lineEdit2 =new QLineEdit;
      
     
    

     

      

     
     

      

           textEdit =new QTextEdit;
      
     
    

     

      

     
     

      

           QGridLayout *TopLayout =new QGridLayout;
      
     
    

     

      

     
     

      

           TopLayout->addWidget(label1,0,0);
      
     
    

     

      

     
     

      

           TopLayout->addWidget(comboBox1,0,1);
      
     
    

     

      

     
     

      

           TopLayout->addWidget(label2,1,0);
      
     
    

     

      

     
     

      

           TopLayout->addWidget(lineEdit2,1,1);
      
     
    

     

      

     
     

      

           TopLayout->addWidget(textEdit,2,0,1,2);
      
     
    

     

      

     
     

      

           OkBtn =new QPushButton(tr("确认"));
      
     
    

     

      

     
     

      

           CancelBtn =new QPushButton(tr("取消"));
      
     
    

     

      

     
     

      

           QHBoxLayout *BottomLayout =new QHBoxLayout;
      
     
    

     

      

     
     

      

           BottomLayout->addStretch(1);
      
     
    

     

      

     
     

      

           BottomLayout->addWidget(OkBtn);
      
     
    

     

      

     
     

      

           BottomLayout->addWidget(CancelBtn);
      
     
    

     

      

     
     

      

           QVBoxLayout *mainLayout =new QVBoxLayout(contentFrame);
      
     
    

     

      

     
     

      

           mainLayout->addLayout(TopLayout);
      
     
    

     

      

     
     

      

           mainLayout->addLayout(BottomLayout);
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       void Palette::fillColorList(QComboBox *comboBox)
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      

           QStringList colorList = QColor::colorNames();	
      
     
    

     

      

     
     

      

           QString color;									
      
     
    

     

      

     
     

      

           foreach(color,colorList)						
      
     
    

     

      

     
     

      

           {
      
     
    

     

      

     
     

      
        QPixmap pix(QSize(70,20));					
      
     
    

     

      

     
     

      

               pix.fill(QColor(color));                    
      
     
    

     

      

     
     

      

               comboBox->addItem(QIcon(pix),NULL);         
      
     
    

     

      

     
     

      

               comboBox->setIconSize(QSize(70,20));		
      
     
    

     

      

     
     

      

               comboBox->setSizeAdjustPolicy(QComboBox::AdjustToContents);
      
     
    

     

      

     
     

      
        //(f)
      
     
    

     

      

     
     

      

           }
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      

       /*
      
     
    

     

      

     
     

      

        * 用于响应对背景颜色的选择
      
     
    

     

      

     
     

      

        */
      
     
    

     

      

     
     

      

       void Palette::ShowWindow()
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      

           QStringList colorList = QColor::colorNames();
      
     
    

     

      

     
     

      

           QColor color = QColor(colorList[windowComboBox->currentIndex()]);
      
     
    

     

      

     
     

      

           QPalette p = contentFrame->palette();
      
     
    

     

      

     
     

      

           p.setColor(QPalette::Window,color);
      
     
    

     

      

     
     

      

           contentFrame->setPalette(p);
      
     
    

     

      

     
     

      

           contentFrame->update();
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      

       /*
      
     
    

     

      

     
     

      

        * 用于响应对应文字颜色的选择
      
     
    

     

      

     
     

      

        */
      
     
    

     

      

     
     

      

       void Palette::ShowWindowText()
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

           QStringList colorList = QColor::colorNames();
      
     
    

     

      

     
     

      

           QColor color = colorList[windowTextComboBox->currentIndex()];
      
     
    

     

      

     
     

      

           QPalette p = contentFrame->palette();
      
     
    

     

      

     
     

      

           p.setColor(QPalette::WindowText,color);
      
     
    

     

      

     
     

      

           contentFrame->setPalette(p);
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       void Palette::ShowButton()
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      

           QStringList colorList = QColor::colorNames();
      
     
    

     

      

     
     

      

           QColor color =QColor(colorList[buttonComboBox->currentIndex()]);
      
     
    

     

      

     
     

      

           QPalette p = contentFrame->palette();
      
     
    

     

      

     
     

      

           p.setColor(QPalette::Button,color);
      
     
    

     

      

     
     

      

           contentFrame->setPalette(p);
      
     
    

     

      

     
     

      

           contentFrame->update();
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       void Palette::ShowButtonText()
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      

           QStringList colorList = QColor::colorNames();
      
     
    

     

      

     
     

      

           QColor color = QColor(colorList[buttonTextComboBox->currentIndex()]);
      
     
    

     

      

     
     

      

           QPalette p =contentFrame->palette();
      
     
    

     

      

     
     

      

           p.setColor(QPalette::ButtonText,color);
      
     
    

     

      

     
     

      

           contentFrame->setPalette(p);
      
     
    

     

      

     
     

      

       }
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       void Palette::ShowBase()
      
     
    

     

      

     
     

      

       {
      
     
    

     

      

     
     

      

           QStringList colorList = QColor::colorNames();
      
     
    

     

      

     
     

      

           QColor color = QColor(colorList[baseComboBox->currentIndex()]);
      
     
    

     

      

     
     

      

           QPalette p = contentFrame->palette();
      
     
    

     

      

     
     

      

           p.setColor(QPalette::Base,color);
      
     
    

     

      

     
     

      

           contentFrame->setPalette(p);
      
     
    

     

      

     
     

      

       }
      
     
   
  

工程连接：https://gitee.com/DreamLife-Technology_DreamLife/Palette