doc: update docs for diconbutton

更新diconbutton的文档，添加示例代码及运行图片

Log: update docs

Issue: linuxdeepin/dtk#94

docs/widgets/diconbutton.zh_CN.dox

@@ -2,11 +2,83 @@
 @~chinese
 @file diconbutton.h
 @ingroup button
-@class
-@brief
-@details
 
-TODO: 添加类简介、示例代码、示例截图和函数使用说明等
+@class Dtk::Widget::DIconButton
+@brief 按钮的图标
+@details 定制化的按钮图标，可以根据传入的图标参数具体调整
+### 示例代码
+#### main.cpp
+```cpp
+#include <QVBoxLayout>
+#include <DApplication>
+#include <DMainWindow>
+#include <DIconButton>
 
+DWIDGET_USE_NAMESPACE
+
+int main(int argc, char *argv[])
+{
+    DApplication app(argc, argv);
+    DMainWindow window;
+    window.setMinimumSize(QSize(600, 200));
+
+    QWidget *centralWidget = new QWidget(&window);
+    QVBoxLayout *layout = new QVBoxLayout(centralWidget);
+
+    DIconButton *button1 = new DIconButton(QStyle::SP_DirIcon);
+    button1->setNewNotification(true); // 显示小红点
+    button1->setIconSize(QSize(32, 32)); // 设置图标尺寸为 32x32
+    layout->addWidget(button1);
+
+    DIconButton *button2 = new DIconButton();
+    button2->setIcon(QIcon("image.jpg")); // 使用本地的图片作为icon
+    button2->setIconSize(QSize(48, 48)); // 设置图标尺寸为 48x48
+    layout->addWidget(button2);
+
+    DIconButton *button3 = new DIconButton(QStyle::SP_ComputerIcon);
+    button3->setIconSize(QSize(64, 64)); // 设置图标尺寸为 64x64
+    layout->addWidget(button3);
+
+    window.setCentralWidget(centralWidget);
+    window.show();
+
+    return app.exec();
+}
+```
+### demo运行图片
+@image html DIconButton_example.png
+
+@fn DIconButton::DIconButton(QWidget *parent)
+@brief 实现一个方便定义图标的button
+@param[in] parent
+
+@fn void DIconButton::setIcon(const QIcon &icon)
+@brief 设置button的图标
+@param[in] icon button的图标
+
+@fn void DIconButton::setIcon(QStyle::StandardPixmap iconType)
+@brief 设置button图标的类型,传入QT预定义枚举值
+@param[in] iconType icon类型
+
+@fn void DIconButton::setIcon(DStyle::StandardPixmap iconType)
+@brief 设置button图标的类型,传入DTK预定义枚举值
+@param[in] iconType icon类型
+
+@fn QSize DIconButton::iconSize() const
+@brief icon的尺寸
+@return 返回icon的尺寸
+
+@fn bool DIconButton::isFlat() const
+@brief button图标有无边框
+@return true无边框 false有边框
+
+@fn void DIconButton::setFlat(bool flat)
+@brief 设置是否保留边框
+@param[in] flat true无边框 false有边框
+
+@fn void DIconButton::setNewNotification(const bool set_new)
+@brief 设置是否显示小红点
+@param[in] set_new true有红点 false无红点
 
 */
+

src/widgets/diconbutton.cpp

@@ -19,8 +19,16 @@ DIconButtonPrivate::DIconButtonPrivate(DIconButton *qq)
 }
 
 /*!
-  \brief DIconButton::DIconButton 实现一个方便定义图标的button
-  \a parent
+@~english
+  @class Dtk::Widget::DIconButton
+  @brief the button icon
+  @details Customized button icons that can be adjusted according to the input icon parameters.
+ */
+
+/*!
+@~english
+  @brief DIconButton::DIconButton implement a button easy to define icons
+  @param[in] parent
  */
 DIconButton::DIconButton(QWidget *parent)
     : DIconButton(*new DIconButtonPrivate(this), parent)
@@ -53,8 +61,9 @@ DIconButton::~DIconButton()
 }
 
 /*!
-  \brief DIconButton::setIcon　设置button的图标
-  \a icon　button的图标
+@~english
+  @brief DIconButton::setIcon　set the button icon
+  @param[in] icon　the button icon
  */
 void DIconButton::setIcon(const QIcon &icon)
 {
@@ -65,8 +74,9 @@ void DIconButton::setIcon(const QIcon &icon)
 }
 
 /*!
-  \brief DIconButton::setIcon 设置button图标的类型,传入QT预定义枚举值
-  \a iconType icon类型
+@~english
+  @brief DIconButton::setIcon Set the type of the Button icon and pass the predefined enumeration value of QT.
+  @param[in] iconType type of icon
  */
 void DIconButton::setIcon(QStyle::StandardPixmap iconType)
 {
@@ -77,8 +87,9 @@ void DIconButton::setIcon(QStyle::StandardPixmap iconType)
 }
 
 /*!
-  \brief DIconButton::setIcon 设置button图标的类型,传入DTK预定义枚举值
-  \a iconType icon类型
+@~english
+  @brief DIconButton::setIcon Set the type of the Button icon and pass the predefined enumeration value of DTK.
+  @param[in] iconType type of icon
  */
 void DIconButton::setIcon(DStyle::StandardPixmap iconType)
 {
@@ -131,8 +142,9 @@ QSize DIconButton::minimumSizeHint() const
 }
 
 /*!
-  \brief DIconButton::iconSize
-  \return 返回ICON的尺寸
+@~english
+  @brief DIconButton::iconSize
+  @return size of icon
  */
 QSize DIconButton::iconSize() const
 {
@@ -153,8 +165,9 @@ QSize DIconButton::iconSize() const
 }
 
 /*!
-  \brief DIconButton::isFlat
-  \return true无边框　false有边框
+@~english
+  @brief DIconButton::isFlat
+  @return "true":no frame  "false":frame
  */
 bool DIconButton::isFlat() const
 {
@@ -182,8 +195,9 @@ bool DIconButton::enabledCircle() const
 }
 
 /*!
-  \brief DIconButton::setFlat 设置是否保留边框
-  \a flat true无边框　false有边框
+@~english
+  @brief DIconButton::setFlat set whether to keep the frame
+  @param[in] flat "true":no frame  "false":frame
  */
 void DIconButton::setFlat(bool flat)
 {
@@ -270,8 +284,9 @@ void DIconButton::keyPressEvent(QKeyEvent *event)
 }
 
 /*!
-  \brief DIconButton::setNewNotification 设置是否显示小红点
-  \a set_new true有红点　false无红点
+@~english
+  @brief DIconButton::setNewNotification set whether to show small red dots
+  @param[in] set_new "true":small red dots  "false":no small red dots
  */
 void DIconButton::setNewNotification(const bool set_new)
 {
@@ -302,7 +317,7 @@ bool DIconButton::event(QEvent *e)
             }
         }
     } else if (e->type() == QEvent::ShowToParent) {
-        // 默认调整大小，否则可能会导致按钮显示后为 QWidget 的默认大小
+        // Resize by default, otherwise it may cause the button to display at the default size of QWidget.
         resize(sizeHint());
     }