Qt之对话框设计

1. #include "maindlg.h"  
2. #include <QPalette>  
3. #include <QHBoxLayout>  
4. #include <QVBoxLayout>  
5. #include <QGridLayout>  
6. #include <QStringList>  
7. #include <QColor>  
8. #include <QPixmap>  
9. #include <QSpinBox>  
10. #include <QTextEdit>  
11. #include <QLineEdit>  
12. #include <QPushButton>  
13. #include <QLabel>  
14.   
15. MainDlg::MainDlg(QWidget *parent, Qt::WFlags flags)  
16.     : QDialog(parent, flags)  
17. {  
18.     createCtrlFrame();  
19.     createContentFrame();  
20.   
21.     QHBoxLayout *mainLayout = new QHBoxLayout(this);  
22.     mainLayout->addWidget(ctrlFrame);  
23.     mainLayout->addWidget(contentFrame);  
24.     mainLayout->setMargin(10);  
25.     mainLayout->setSpacing(5);  
26.     mainLayout->setSizeConstraint(QLayout::SetFixedSize);  
27. }  
28.   
29. MainDlg::~MainDlg()  
30. {  
31.   
32. }  
33.   
34. void MainDlg::fillColorList(QComboBox *cbb)  
35. {  
36.     QStringList colorNameList = QColor::colorNames();  
37.   
38.     QString colorName;  
39.     foreach(colorName,colorNameList)  
40.     {  
41.         QPixmap pix_color(70,20);  
42.         pix_color.fill(QColor(colorName));  
43.   
44.         cbb->addItem(QIcon(pix_color),NULL);  
45.         cbb->setIconSize(QSize(70,20));  
46.         cbb->setSizeAdjustPolicy(QComboBox::AdjustToContents);   //设置下拉列表的尺寸符合内容的大小  
47.     }  
48. }  
49.   
50. void MainDlg::createCtrlFrame()  
51. {  
52.     ctrlFrame = new QFrame;  
53.   
54.     QLabel *labWindow = new QLabel(tr("QPalette::Window:"));  
55.     QLabel *labWindowText = new QLabel(tr("QPalette::WindowText:"));  
56.     QLabel *labButton = new QLabel(tr("QPalette::Button:"));  
57.     QLabel *labButtonText = new QLabel(tr("QPalette::ButtonText:"));  
58.     QLabel *labBase = new QLabel(tr("QPalette::Base:"));  
59.   
60.     cbbWindow = new QComboBox;  
61.     fillColorList(cbbWindow);  
62.     connect(cbbWindow,SIGNAL(activated(int)),this,SLOT(sl_window()));  
63.     cbbWindowText = new QComboBox;  
64.     fillColorList(cbbWindowText);  
65.     connect(cbbWindowText,SIGNAL(activated(int)),this,SLOT(sl_windowText()));  
66.     cbbButton = new QComboBox;  
67.     fillColorList(cbbButton);  
68.     connect(cbbButton,SIGNAL(activated(int)),this,SLOT(sl_button()));  
69.     cbbButtonText = new QComboBox;  
70.     fillColorList(cbbButtonText);  
71.     connect(cbbButtonText,SIGNAL(activated(int)),this,SLOT(sl_buttonText()));  
72.     cbbBase = new QComboBox;  
73.     fillColorList(cbbBase);  
74.     connect(cbbBase,SIGNAL(activated(int)),this,SLOT(sl_base()));  
75.       
76.     int col_lab = 0;  
77.     int col_cbb = 1;  
78.     QGridLayout *ctrlLayout = new QGridLayout(ctrlFrame);  
79.     ctrlLayout->addWidget(labWindow,0,col_lab);  
80.     ctrlLayout->addWidget(labWindowText,1,col_lab);  
81.     ctrlLayout->addWidget(labButton,2,col_lab);  
82.     ctrlLayout->addWidget(labButtonText,3,col_lab);  
83.     ctrlLayout->addWidget(labBase,4,col_lab);  
84.     ctrlLayout->addWidget(cbbWindow,0,col_cbb);  
85.     ctrlLayout->addWidget(cbbWindowText,1,col_cbb);  
86.     ctrlLayout->addWidget(cbbButton,2,col_cbb);  
87.     ctrlLayout->addWidget(cbbButtonText,3,col_cbb);  
88.     ctrlLayout->addWidget(cbbBase,4,col_cbb);  
89.     ctrlLayout->setMargin(5);  
90.     ctrlLayout->setSpacing(5);  
91. }  
92.   
93. void MainDlg::createContentFrame()  
94. {  
95.     contentFrame = new QFrame;  
96.       
97.     QLabel *labValue = new QLabel(tr("Please select one of the values:"));  
98.     QSpinBox *spbValue = new QSpinBox;  
99.     QHBoxLayout *valueLayout = new QHBoxLayout;  
100.     valueLayout->addWidget(labValue);  
101.     valueLayout->addWidget(spbValue);  
102.     valueLayout->setSpacing(5);  
103.   
104.     QLabel *labString = new QLabel(tr("Please input a string"));  
105.     QLineEdit *edtString = new QLineEdit;  
106.     QHBoxLayout *stringLayout = new QHBoxLayout;  
107.     stringLayout->addWidget(labString);  
108.     stringLayout->addWidget(edtString);  
109.     stringLayout->setSpacing(5);  
110.   
111.     QTextEdit *edtHelloQt = new QTextEdit(tr("Hello Qt!"));  
112.       
113.     QPushButton *btnOk = new QPushButton(tr("OK"));  
114.     QPushButton *btnCancel =new QPushButton(tr("Cancel"));  
115.     QHBoxLayout *buttonLayout = new QHBoxLayout;  
116.     buttonLayout->addStretch(1);  
117.     buttonLayout->addWidget(btnOk);  
118.     buttonLayout->addWidget(btnCancel);  
119.     buttonLayout->setSpacing(5);  
120.   
121.     QVBoxLayout *contentLayout = new QVBoxLayout(contentFrame);  
122.     contentLayout->addLayout(valueLayout);  
123.     contentLayout->addLayout(stringLayout);  
124.     contentLayout->addWidget(edtHelloQt);  
125.     contentLayout->addLayout(buttonLayout);  
126.     contentLayout->setMargin(5);  
127.     contentLayout->setSpacing(5);  
128.   
129.     btnOk->setAutoFillBackground(true);  
130.     btnCancel->setAutoFillBackground(true);  
131.     contentFrame->setAutoFillBackground(true);  
132. }  
133.   
134. void MainDlg::sl_window()  
135. {  
136.     QStringList colorList = QColor::colorNames();  
137.     QColor color = QColor(colorList[cbbWindow->currentIndex()]);  
138.     QPalette p = contentFrame->palette();  
139.     p.setColor(QPalette::Window,color);  
140.     contentFrame->setPalette(p);  
141. }  
142.   
143. void MainDlg::sl_windowText()  
144. {  
145.     QStringList colorList = QColor::colorNames();  
146.     QColor color = QColor(colorList[cbbWindowText->currentIndex()]);  
147.     QPalette p = contentFrame->palette();  
148.     p.setColor(QPalette::WindowText,color);  
149.     contentFrame->setPalette(p);  
150. }  
151.   
152. void MainDlg::sl_button()  
153. {  
154.     QStringList colorNameList = QColor::colorNames();  
155.     QColor m_color = QColor(colorNameList[cbbButton->currentIndex()]);  
156.     QPalette p = contentFrame->palette();  
157.     p.setColor(QPalette::Button,m_color);  
158.     contentFrame->setPalette(p);  
159. }  
160.   
161. void MainDlg::sl_buttonText()  
162. {  
163.     QStringList colorNameList = QColor::colorNames();  
164.     QColor m_color = QColor(colorNameList[cbbButtonText->currentIndex()]);  
165.     QPalette p = contentFrame->palette();  
166.     p.setColor(QPalette::ButtonText,m_color);  
167.     contentFrame->setPalette(p);  
168. }  
169.   
170.   
171. void MainDlg::sl_base()  
172. {  
173.     QStringList colorNameList = QColor::colorNames();  
174.     QColor m_color = QColor(colorNameList[cbbBase->currentIndex()]);  
175.     QPalette p = contentFrame->palette();  
176.     p.setColor(QPalette::Base,m_color);  
177.     contentFrame->setPalette(p);  
178. }