26.QT颜色与布局

dialog.h

 1 #ifndef PALETTE_H
 2 #define PALETTE_H
 3 
 4 #include <QDialog>
 5 #include <QComboBox>
 6 #include <QLabel>
 7 #include <QTextEdit>
 8 #include <QPushButton>
 9 #include <QLineEdit>
10 
11 class Palette : public QDialog
12 {
13     Q_OBJECT
14 
15 public:
16     Palette(QWidget *parent = 0);
17     ~Palette();
18 
19     //创建左边布局
20     void createCtrlFrame();
21     //创建右边布局
22     void createContentFrame();
23     //给下拉框填充颜色
24     void fillColorList(QComboBox *);
25 
26 private slots:
27     void showWindow();
28     void showWindowText();
29     void showButton();
30     void showButtonText();
31     void showBase();
32 
33 private:
34     QFrame *ctrlFrame;
35     QLabel *windowLabel;
36     QComboBox *windowComboBox;
37     QLabel *windowTextLabel;
38     QComboBox *windowTextComboBox;
39     QLabel *buttonLabel;
40     QComboBox *buttonComboBox;
41     QLabel *buttonTextLabel;
42     QComboBox *buttonTextComboBox;
43     QLabel *baseLabel;
44     QComboBox *baseComboBox;
45     QFrame *contentFrame;
46     QLabel *label1;
47     QComboBox *comboBox1;
48     QLabel *label2;
49     QLineEdit *lineEdit2;
50     QTextEdit *textEdit;
51     QPushButton *okBtn;
52     QPushButton *cancelBtn;
53 };
54 
55 #endif // PALETTE_H

dialog.cpp

  1 #include "dialog.h"
  2 #include <QHBoxLayout>
  3 #include <QGridLayout>
  4 #include <QPalette>
  5 #include <QBoxLayout>
  6 
  7 Palette::Palette(QWidget *parent)
  8     : QDialog(parent)
  9 {
 10     createCtrlFrame();
 11     createContentFrame();
 12     QHBoxLayout *mainLayout = new QHBoxLayout(this);
 13     mainLayout->addWidget(ctrlFrame);
 14     mainLayout->addWidget(contentFrame);
 15 }
 16 
 17 //创建左边布局
 18 void Palette::createCtrlFrame()
 19 {
 20     //创建框架
 21     ctrlFrame = new QFrame;
 22 
 23     //窗口背景色
 24     windowLabel = new QLabel(tr("控件背景色: "));
 25     windowComboBox = new QComboBox;
 26     fillColorList(windowComboBox);
 27     //控件与时间绑定
 28     connect(windowComboBox,SIGNAL(activated(int)),this,SLOT(showWindow()));
 29 
 30      //窗口前景色
 31     windowTextLabel = new QLabel(tr("窗口字体颜色: "));
 32     windowTextComboBox = new QComboBox;
 33     fillColorList(windowTextComboBox);
 34     connect(windowTextComboBox,SIGNAL(activated(int)),this,SLOT(showWindowText()));
 35 
 36     //窗口按钮的颜色
 37     buttonLabel = new QLabel(tr("窗口按钮的颜色: "));
 38     buttonComboBox = new QComboBox;
 39     fillColorList(buttonComboBox);
 40     connect(buttonComboBox,SIGNAL(activated(int)),this,SLOT(showButton()));
 41 
 42     //窗口按钮上面文本的颜色
 43     buttonTextLabel = new QLabel(tr("窗口按钮上面文本的颜色: "));
 44     buttonTextComboBox = new QComboBox;
 45     fillColorList(buttonTextComboBox);
 46     connect(buttonTextComboBox,SIGNAL(activated(int)),this,SLOT(showButtonText()));
 47 
 48     //编辑框背景色
 49     baseLabel = new QLabel(tr("编辑框背景色: "));
 50     baseComboBox = new QComboBox;
 51     fillColorList(baseComboBox);
 52     connect(baseComboBox,SIGNAL(activated(int)),this,SLOT(showBase()));
 53 
 54     //创建网格布局,框架是ctrFrame
 55     QGridLayout *mainLayout = new QGridLayout(ctrlFrame);
 56     //设置间距
 57     mainLayout->setSpacing(20);
 58     mainLayout->addWidget(windowLabel,0,0);
 59     mainLayout->addWidget(windowComboBox,0,1);
 60 
 61     mainLayout->addWidget(windowTextLabel,1,0);
 62     mainLayout->addWidget(windowTextComboBox,1,1);
 63 
 64     mainLayout->addWidget(buttonLabel,2,0);
 65     mainLayout->addWidget(buttonComboBox,2,1);
 66 
 67     mainLayout->addWidget(buttonTextLabel,3,0);
 68     mainLayout->addWidget(buttonTextComboBox,3,1);
 69 
 70     mainLayout->addWidget(baseLabel,4,0);
 71     mainLayout->addWidget(baseComboBox,4,1);
 72 
 73 }
 74 
 75 //创建右边布局
 76 void Palette::createContentFrame()
 77 {
 78     contentFrame = new QFrame;
 79     label1 = new QLabel(tr("请选择一个值："));
 80     comboBox1 = new QComboBox;
 81 
 82     label2 = new QLabel(tr("请输入字符串: "));
 83     lineEdit2 = new QLineEdit;
 84 
 85     textEdit = new QTextEdit;
 86 
 87     //创建网格布局
 88     QGridLayout *topLayout = new QGridLayout;
 89     topLayout->addWidget(label1,0,0);
 90     topLayout->addWidget(comboBox1,0,1);
 91     topLayout->addWidget(label2,1,0);
 92     topLayout->addWidget(lineEdit2,1,1);
 93     topLayout->addWidget(textEdit,2,0,1,2);
 94 
 95     okBtn = new QPushButton(tr("确认"));
 96     cancelBtn = new QPushButton(tr("取消"));
 97 
 98     //创建水平布局
 99     QHBoxLayout *bottomLayout = new QHBoxLayout;
100     //设置伸缩性
101     bottomLayout->addStretch(1);
102     bottomLayout->addWidget(okBtn);
103     bottomLayout->addWidget(cancelBtn);
104 
105     //创建垂直布局,把两个布局加入,框架是contentFrame
106     QVBoxLayout *mainlayout = new QVBoxLayout(contentFrame);
107     mainlayout->addLayout(topLayout);
108     mainlayout->addLayout(bottomLayout);
109 
110     //允许自动填充
111     okBtn->setAutoFillBackground(true);
112     cancelBtn->setAutoFillBackground(true);
113     //设置可以填充
114     contentFrame->setAutoFillBackground(true);
115 }
116 
117 //用于控制背景颜色的显示
118 void Palette::showWindow()
119 {
120     QStringList colorList = QColor::colorNames();
121     QColor color = QColor(colorList[windowComboBox->currentIndex()]);
122 
123 
124     QPalette p = contentFrame->palette();
125     p.setColor(QPalette::Window, color);
126     contentFrame->setPalette(p);
127 
128     contentFrame->update();
129 }
130 
131 //对窗体的前景色进行设置
132 void Palette::showWindowText()
133 {
134     QStringList colorList = QColor::colorNames();
135     QColor color = colorList[windowTextComboBox->currentIndex()];
136 
137     QPalette p = contentFrame->palette();
138     p.setColor(QPalette::WindowText, color);
139     contentFrame->setPalette(p);
140 }
141 
142 //按钮文字颜色设置
143 void Palette::showButtonText()
144 {
145     QStringList colorList = QColor::colorNames();
146     QColor color = QColor(colorList[buttonTextComboBox->currentIndex()]);
147 
148     QPalette p = contentFrame->palette();
149     p.setColor(QPalette::ButtonText , color);
150     contentFrame->setPalette(p);
151 }
152 
153 //edit背景颜色设置
154 void Palette::showBase()
155 {
156     QStringList colorList = QColor::colorNames();
157     QColor color = QColor(colorList[baseComboBox->currentIndex()]);
158 
159     QPalette p = contentFrame->palette();
160     p.setColor(QPalette::Base , color);
161     contentFrame->setPalette(p);
162 }
163 
164 //控件添加颜色
165 void Palette::fillColorList(QComboBox *comboBox)
166 {
167     QStringList colorList = QColor::colorNames();
168     QString color;
169 
170     foreach (color, colorList)
171     {
172         QPixmap pix(QSize(70,20));
173         pix.fill(QColor(color));
174         comboBox->addItem(QIcon(pix), NULL);
175         comboBox->setIconSize(QSize(70,20));
176         comboBox->setSizeAdjustPolicy(QComboBox::AdjustToContents);
177     }
178 }
179 
180 //按钮颜色设置
181 void Palette::showButton()
182 {
183     QStringList colorList = QColor::colorNames();
184     QColor color = QColor(colorList[buttonComboBox->currentIndex()]);
185 
186     //contentFrame->setAutoFillBackground(true);
187 
188     QPalette p = contentFrame->palette();
189     p.setColor(QPalette::Button , color);
190     contentFrame->setPalette(p);
191 
192     contentFrame->update();
193 
194 }
195 
196 Palette::~Palette()
197 {
198 
199 }

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原文地址：https://www.cnblogs.com/xiaochi/p/8763119.html