26.QT颜色与布局

dialog.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 = );
     ~Palette();

     //创建左边布局
     void createCtrlFrame();
     //创建右边布局
     void createContentFrame();
     //给下拉框填充颜色
     void fillColorList(QComboBox *);

 private slots:
     void showWindow();
     void showWindowText();
     void showButton();
     void showButtonText();
     void showBase();

 private:
     QFrame *ctrlFrame;
     QLabel *windowLabel;
     QComboBox *windowComboBox;
     QLabel *windowTextLabel;
     QComboBox *windowTextComboBox;
     QLabel *buttonLabel;
     QComboBox *buttonComboBox;
     QLabel *buttonTextLabel;
     QComboBox *buttonTextComboBox;
     QLabel *baseLabel;
     QComboBox *baseComboBox;
     QFrame *contentFrame;
     QLabel *label1;
     QComboBox *comboBox1;
     QLabel *label2;
     QLineEdit *lineEdit2;
     QTextEdit *textEdit;
     QPushButton *okBtn;
     QPushButton *cancelBtn;
 };

 #endif // PALETTE_H

dialog.cpp

 #include "dialog.h"
 #include <QHBoxLayout>
 #include <QGridLayout>
 #include <QPalette>
 #include <QBoxLayout>

 Palette::Palette(QWidget *parent)
     : QDialog(parent)
 {
     createCtrlFrame();
     createContentFrame();
     QHBoxLayout *mainLayout = new QHBoxLayout(this);
     mainLayout->addWidget(ctrlFrame);
     mainLayout->addWidget(contentFrame);
 }

 //创建左边布局
 void Palette::createCtrlFrame()
 {
     //创建框架
     ctrlFrame = new QFrame;

     //窗口背景色
     windowLabel = new QLabel(tr("控件背景色: "));
     windowComboBox = new QComboBox;
     fillColorList(windowComboBox);
     //控件与时间绑定
     connect(windowComboBox,SIGNAL(activated(int)),this,SLOT(showWindow()));

      //窗口前景色
     windowTextLabel = new QLabel(tr("窗口字体颜色: "));
     windowTextComboBox = new QComboBox;
     fillColorList(windowTextComboBox);
     connect(windowTextComboBox,SIGNAL(activated(int)),this,SLOT(showWindowText()));

     //窗口按钮的颜色
     buttonLabel = new QLabel(tr("窗口按钮的颜色: "));
     buttonComboBox = new QComboBox;
     fillColorList(buttonComboBox);
     connect(buttonComboBox,SIGNAL(activated(int)),this,SLOT(showButton()));

     //窗口按钮上面文本的颜色
     buttonTextLabel = new QLabel(tr("窗口按钮上面文本的颜色: "));
     buttonTextComboBox = new QComboBox;
     fillColorList(buttonTextComboBox);
     connect(buttonTextComboBox,SIGNAL(activated(int)),this,SLOT(showButtonText()));

     //编辑框背景色
     baseLabel = new QLabel(tr("编辑框背景色: "));
     baseComboBox = new QComboBox;
     fillColorList(baseComboBox);
     connect(baseComboBox,SIGNAL(activated(int)),this,SLOT(showBase()));

     //创建网格布局,框架是ctrFrame
     QGridLayout *mainLayout = new QGridLayout(ctrlFrame);
     //设置间距
     mainLayout->setSpacing();
     mainLayout->addWidget(windowLabel,,);
     mainLayout->addWidget(windowComboBox,,);

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

     mainLayout->addWidget(buttonLabel,,);
     mainLayout->addWidget(buttonComboBox,,);

     mainLayout->addWidget(buttonTextLabel,,);
     mainLayout->addWidget(buttonTextComboBox,,);

     mainLayout->addWidget(baseLabel,,);
     mainLayout->addWidget(baseComboBox,,);

 }

 //创建右边布局
 void Palette::createContentFrame()
 {
     contentFrame = new QFrame;
     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;

     //创建网格布局
     QGridLayout *topLayout = new QGridLayout;
     topLayout->addWidget(label1,,);
     topLayout->addWidget(comboBox1,,);
     topLayout->addWidget(label2,,);
     topLayout->addWidget(lineEdit2,,);
     topLayout->addWidget(textEdit,,,,);

     okBtn = new QPushButton(tr("确认"));
     cancelBtn = new QPushButton(tr("取消"));

     //创建水平布局
     QHBoxLayout *bottomLayout = new QHBoxLayout;
     //设置伸缩性
     bottomLayout->addStretch();
     bottomLayout->addWidget(okBtn);
     bottomLayout->addWidget(cancelBtn);

     //创建垂直布局,把两个布局加入,框架是contentFrame
     QVBoxLayout *mainlayout = new QVBoxLayout(contentFrame);
     mainlayout->addLayout(topLayout);
     mainlayout->addLayout(bottomLayout);

     //允许自动填充
     okBtn->setAutoFillBackground(true);
     cancelBtn->setAutoFillBackground(true);
     //设置可以填充
     contentFrame->setAutoFillBackground(true);
 }

 //用于控制背景颜色的显示
 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();
 }

 //对窗体的前景色进行设置
 void Palette::showWindowText()
 {
     QStringList colorList = QColor::colorNames();
     QColor color = colorList[windowTextComboBox->currentIndex()];

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

 //按钮文字颜色设置
 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);
 }

 //edit背景颜色设置
 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);
 }

 //控件添加颜色
 void Palette::fillColorList(QComboBox *comboBox)
 {
     QStringList colorList = QColor::colorNames();
     QString color;

     foreach (color, colorList)
     {
         QPixmap pix(QSize(,));
         pix.fill(QColor(color));
         comboBox->addItem(QIcon(pix), NULL);
         comboBox->setIconSize(QSize(,));
         comboBox->setSizeAdjustPolicy(QComboBox::AdjustToContents);
     }
 }

 //按钮颜色设置
 void Palette::showButton()
 {
     QStringList colorList = QColor::colorNames();
     QColor color = QColor(colorList[buttonComboBox->currentIndex()]);

     //contentFrame->setAutoFillBackground(true);

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

     contentFrame->update();

 }

 Palette::~Palette()
 {

 }