Qt QPalette调色板前言

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我是靠谱客的博主鲤鱼煎饼，最近开发中收集的这篇文章主要介绍Qt QPalette调色板前言，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

前言

Qt提供的调色板类 QPalette 专门用于管理部件的外观显示,相当于部件或对话框的调色板,管理他们所有的颜色信息,每一个部件都包含一个 QPalette 对象,在显示时,按照它的 QPalette 对象中对各部分各状态下的颜色的描述进行绘制

调色板运用
效果图:

#ifndef DIALOG_H
#define DIALOG_H

#include <QDialog>
#include <QFrame>
#include <QLabel>
#include <QComboBox>
#include <QTextEdit>
#include <QLineEdit>
#include <QPushButton>

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 <QGridLayout>


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();
}