Qt QPalette调色板

调色板运用
效果图:

#ifndef DIALOG_H
#define DIALOG_H

#include 
#include 
#include 
#include 
#include 
#include 
#include 

class Dialog : public QDialog
{
    Q_OBJECT

public:
    Dialog(QWidget *parent = nullptr);
    ~Dialog();

public:
    void createCtrlframe();
    void createContentframe();
    void fillColorList(QComboBox* comboBox);    //组合框添加颜色链表


private slots:
    void ShowWindow(int index);
    void ShowWindowText(int index);
    void ShowButton(int index);
    void ShowButtonText(int index);
    void Showbase(int index);
private:
    Qframe *m_ctrlframe;

    QLabel *m_windowLabel;
    QComboBox *m_windowComboBox;

    QLabel *m_windowTextLabel;
    QComboBox *m_windowTextComboBox;

    QLabel *m_buttonLabel;
    QComboBox *m_buttonLabelComboBox;

    QLabel *m_buttonTextLabel;
    QComboBox *m_buttonTextComboBox;

    QLabel *m_baseLabel;
    QComboBox *m_baseComboBox;

    Qframe *m_contentframe;

    QLabel *m_label1;
    QLabel *m_label2;

    QComboBox *m_comboBox1;
    QLineEdit *m_lineEdit;
    QTextEdit *m_textEdit;
    QPushButton *m_okBtn;
    QPushButton *m_canceBtn;
};
#endif // DIALOG_H

#include "dialog.h"

#include 


Dialog::Dialog(QWidget *parent)
    : QDialog(parent)
{
    setWindowTitle("QPalette");
    setWindowFlags(Qt::WindowCloseButtonHint);

    createCtrlframe();
    createContentframe();

    //水平布局
    QHBoxLayout *mainLayout = new QHBoxLayout(this);
    mainLayout->addWidget(m_ctrlframe);
    mainLayout->addWidget(m_contentframe);
}

Dialog::~Dialog()
{
}

void Dialog::createCtrlframe()
{
    m_ctrlframe = new Qframe;
    m_ctrlframe->setframeStyle(Qframe::Sunken | Qframe::Box);       //设置风格
    m_windowLabel = new QLabel("QPalette::Window:");
    m_windowComboBox = new QComboBox;
    fillColorList(m_windowComboBox);        //填充颜色
    connect(m_windowComboBox,SIGNAL(activated(int)),this,SLOT(ShowWindow(int)));

    m_windowTextLabel = new QLabel("QPalette::WindowText:");
    m_windowTextComboBox = new QComboBox;
    fillColorList(m_windowTextComboBox);
    connect(m_windowTextComboBox,SIGNAL(activated(int)),this,SLOT(ShowWindowText(int)));

    m_buttonLabel = new QLabel("QPatte::Button:");
    m_buttonLabelComboBox = new QComboBox;
    fillColorList(m_buttonLabelComboBox);
    connect(m_buttonLabelComboBox,SIGNAL(activated(int)),this,SLOT(ShowButton(int)));

    m_buttonTextLabel = new QLabel("QPatte::ButtonText:");
    m_buttonTextComboBox = new QComboBox;
    fillColorList(m_buttonTextComboBox);
    connect(m_buttonTextComboBox,SIGNAL(activated(int)),this,SLOT(ShowButtonText(int)));

    m_baseLabel = new QLabel("QPalette::base:");
    m_baseComboBox = new QComboBox;
    fillColorList(m_baseComboBox);
    connect(m_baseComboBox,SIGNAL(activated(int)),this,SLOT(Showbase(int)));

    //格线布局
    QGridLayout *mainLayout = new QGridLayout(m_ctrlframe);
    mainLayout->setSpacing(20); //设置间隙
    mainLayout->addWidget(m_windowLabel,0,0);
    mainLayout->addWidget(m_windowComboBox,0,1);
    mainLayout->addWidget(m_windowTextLabel,1,0);
    mainLayout->addWidget(m_windowTextComboBox,1,1);
    mainLayout->addWidget(m_buttonLabel,2,0);
    mainLayout->addWidget(m_buttonLabelComboBox,2,1);
    mainLayout->addWidget(m_buttonTextLabel,3,0);
    mainLayout->addWidget(m_buttonTextComboBox,3,1);
    mainLayout->addWidget(m_baseLabel,4,0);
    mainLayout->addWidget(m_baseComboBox,4,1);

}

void Dialog::createContentframe()
{
    m_contentframe = new Qframe;
    m_contentframe->setAutoFillBackground(true);
    m_label1 = new QLabel("请选择一个值");
    m_label2 = new QLabel("请输入字符串");
    m_comboBox1 = new QComboBox;
    m_lineEdit = new QLineEdit;
    m_textEdit = new QTextEdit;
    m_okBtn = new QPushButton(QString("确认"));
    m_canceBtn = new QPushButton(QString("取消"));
    m_okBtn->setAutoFillBackground(true);   //背景自动填充

    QGridLayout *Toplayout = new QGridLayout;
    Toplayout->addWidget(m_label1 ,0,0);
    Toplayout->addWidget(m_comboBox1,0,1);
    Toplayout->addWidget(m_label2,1,0);
    Toplayout->addWidget(m_lineEdit,1,1);
    Toplayout->addWidget(m_textEdit,2,0,1,2);

    QHBoxLayout *bottomLayout = new QHBoxLayout;
    bottomLayout->addWidget(m_okBtn);
    bottomLayout->addWidget(m_canceBtn);

    //垂直布局
    QVBoxLayout *mainLayout = new QVBoxLayout(m_contentframe);
    mainLayout->addLayout(Toplayout);
    mainLayout->addLayout(bottomLayout);
}

void Dialog::fillColorList(QComboBox *comboBox)
{
    //将所有颜色放入链表
    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));
        //根据内容进行适应
        comboBox->setSizeAdjustPolicy(QComboBox::AdjustToContents);
    }


}

void Dialog::ShowWindow(int index)
{
    QStringList colorList = QColor::colorNames();
    QColor color = QColor(colorList[index]);
    QPalette p = m_contentframe->palette();
    p.setColor(QPalette::Window,color);
    m_contentframe->setPalette(p);
    //触发重绘
    m_contentframe->update();
}

void Dialog::ShowWindowText(int index)
{
    QStringList colorList = QColor::colorNames();
    QColor color = QColor(colorList[index]);

    QPalette p = m_contentframe->palette();
    p.setColor(QPalette::WindowText,color);
    m_contentframe->setPalette(p);
    m_contentframe->update();
}

void Dialog::ShowButton(int index)
{
    QStringList colorList = QColor::colorNames();
    QColor color = QColor(colorList[index]);

    QPalette p = m_contentframe->palette();
    p.setColor(QPalette::Button,color);
    m_contentframe->setPalette(p);
    m_contentframe->update();
}

void Dialog::ShowButtonText(int index)
{
    QStringList colorList = QColor::colorNames();
    QColor color = QColor(colorList[index]);

    QPalette p = m_contentframe->palette();
    p.setColor(QPalette::ButtonText,color);
    m_contentframe->setPalette(p);
    m_contentframe->update();
}

void Dialog::Showbase(int index)
{
    QStringList colorList = QColor::colorNames();
    QColor color = QColor(colorList[index]);

    QPalette p = m_contentframe->palette();
    p.setColor(QPalette::base,color);
    m_contentframe->setPalette(p);
    m_contentframe->update();
}