QPalette palette, frame color fill

QPalette调色板

QFrame Box fill color

参考书籍：
Book_LuWenZhou
参考代码:

    penColorLabel =new QLabel(tr("画笔颜色："));      //画笔颜色选择控件
    penColorFrame =new QFrame; //形状、框架. Fill with the selected brush color
    penColorFrame->setFrameStyle(QFrame::Panel|QFrame::Sunken);
    penColorFrame->setAutoFillBackground(true);
    penColorFrame->setPalette(QPalette(Qt::blue)); //画刷
    penColorBtn =new QPushButton(tr("更改"));
    connect(penColorBtn,SIGNAL(clicked()),this,SLOT(ShowPenColor()));

void MainWidget::ShowPenColor()
{
    
    //static_cast < type-id > ( expression ) 该运算符把expression转换为type-id类型
// QColor color = QColorDialog::getColor(static_cast<int>(Qt::blue));
    QColor color = QColorDialog::getColor((Qt::blue));
    penColorFrame->setPalette(QPalette(color));   //设置FrameThe box is the selected color
    //Update brush
    int value = penWidthSpinBox->value();
    Qt::PenStyle style = Qt::PenStyle(penStyleComboBox->itemData(
            penStyleComboBox->currentIndex(),Qt::UserRole).toInt());
    Qt::PenCapStyle cap = Qt::PenCapStyle(penCapComboBox->itemData(
            penCapComboBox->currentIndex(),Qt::UserRole).toInt());
    Qt::PenJoinStyle join=Qt::PenJoinStyle(penJoinComboBox->itemData(penJoinComboBox->currentIndex(),Qt::UserRole).toInt());
    paintArea->setPen(QPen(color,value,style,cap,join));
}

QToolButtonTool button fill color

参考代码:

    colorBtn =new QToolButton;                  //创建颜色选择控件
    QPixmap pixmap(20,20);
    pixmap.fill(Qt::black);
    colorBtn->setIcon(QIcon(pixmap));
    connect(colorBtn,SIGNAL(clicked()),this,SLOT(ShowColor()));

void MainWindow::ShowColor()
{
    
    QColor color = QColorDialog::getColor(static_cast<int> (Qt::black), this);
    //Use the standard color dialogQColorDialog获得一个颜色值
    if(color.isValid())  //Color is selected
    {
    
       //将新选择的颜色传给绘制区,用于改变画笔的颜色值
        drawWidget->setColor(color);
        QPixmap p(20,20);
        p.fill(color);
        colorBtn->setIcon(QIcon(p));		//更新颜色选择按钮上的颜色显示
    }
}

QComboBoxDrop-down option box fill color

参考代码:

#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);
}

void Palette::createCtrlFrame()
{
    
    windowLabel =new QLabel(tr("QPalette::Window: "));  //背景色
    windowComboBox =new QComboBox;			//创建一个QComboBox对象
    fillColorList(windowComboBox);			//(a) Insert various color options into the drop-down list box
    connect(windowComboBox,SIGNAL(activated(int)),this,SLOT(ShowWindow()));//(b)

    windowTextLabel =new QLabel(tr("QPalette::WindowText: "));  //前景色（字体颜色）
    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()));

    ctrlFrame =new QFrame;                  //Color selection panel
    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()
{
    
    label1 =new QLabel(tr("Please select a value："));
    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);  //控件对象,行,列,The number of rows occupied,The number of columns occupied,对齐方式（默认为0）

    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);

    contentFrame =new QFrame;                	// 设置显示面板
    QVBoxLayout *mainLayout =new QVBoxLayout(contentFrame); // 垂直布局
    mainLayout->addLayout(TopLayout);  //Add sub-layout
    mainLayout->addLayout(BottomLayout);
}

void Palette::ShowWindow()
{
    
    //Get the currently selected color value
    QStringList colorList = QColor::colorNames();
    QColor color = QColor(colorList[windowComboBox->currentIndex()]);
    QPalette p = contentFrame->palette();		//(a)
    p.setColor(QPalette::Window,color);			//(b) 设置窗体的windowClass color theme,颜色值为color
    //Apply the modified palette information to contentFrame窗体中,更新显示
    contentFrame->setPalette(p);
    contentFrame->update();
}

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);
}

void Palette::fillColorList(QComboBox *comboBox)
{
    
    QStringList colorList = QColor::colorNames();	//(a) 获得QTList of color names for all built-in names.
    QString color;									//(b)
    foreach(color,colorList)						//Iterate over the list of color names
    {
    
        QPixmap pix(QSize(70,20));					//(c)
        pix.fill(QColor(color));                    //为pixFills the current traversal with the color
        comboBox->addItem(QIcon(pix),NULL);         //(d) 插入图标icon,名称设为NULL,i.e. the name of the color is not displayed
        comboBox->setIconSize(QSize(70,20));		//(e) Set the size of the icon,默认是方形,将其设为和pixRectangles of the same size
        comboBox->setSizeAdjustPolicy(QComboBox::AdjustToContents);
        //(f) Sets the drop-down list box's resizing policy to ：Fits the size of the content.
    }
}

Palette::~Palette()
{
    

}

``