QtExamples/QtQTreeWidgetEx/ExQTreeWidget.h
touwoyimuli 7478bb8f34 feat: QTreeWidget and QDockWidget
QTreeWidget(目录树组件) and QDockWidget(停靠区域组件)的介绍和使用
2019-09-10 22:34:07 +08:00

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#ifndef EXQTREEWIDGET_H
#define EXQTREEWIDGET_H
#include <QMainWindow>
#include <QLabel>
#include <QTreeWidgetItem>
#include <QFileDialog>
namespace Ui {
class ExQTreeWidget;
}
class ExQTreeWidget : public QMainWindow
{
Q_OBJECT
public:
enum treeItemType { //枚举,节点类型
itemRoot,
itemFile,
itemImage
};
enum treeColNum { //目录树列表的编号
colItem = 0,
colItemType = 1
};
explicit ExQTreeWidget(QWidget *parent = nullptr);
~ExQTreeWidget();
void initTree(); //初始化根节点(唯一)
void addFolderItem(QTreeWidgetItem *parItem, QString dirName); //添加目录
void addImageItem(QTreeWidgetItem *parItem, QString fileName); //添加图片文件
QString getFinalFolderName(const QString &pathName); //从完整的路径里面,获取最后的文件夹名称
void changeItemCaption(QTreeWidgetItem* parItem); //遍历item下面的所有节点
void displayImage(QTreeWidgetItem* item); //显示当前item的图片默认以适配高度
private slots:
void on_actAddFolder_triggered(); //增加文件夹
void on_actAddFile_triggered(); //添加图片文件
void on_actDeleFile_triggered(); //删除节点
void on_actScanItems_triggered(); //遍历所有的顶层节点(本处只有一个root顶层节点)
void on_actAdaptiveHeight_triggered(); //图片自动适应高度
void on_actAdaptiveWidth_triggered(); //图片自动适应宽度
void on_actAmplification_triggered(); //放大
void on_actShrink_triggered(); //缩小
void on_actZoomRealSize_triggered(); //还原
void on_actDockFloating_triggered(bool check); //设置Dock窗口是否浮动
void on_actDockVisible_triggered(bool checked); //设置Dock窗口是否隐藏不显示
void on_actQiut_triggered(); //退出
void on_treeFiles_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous); //当前节点变化的时候,自动加载当前图片
void on_dockWidget_visibilityChanged(bool visible); //单击DockWidget组件的标题栏的关闭按钮时候会隐藏在停靠区域并且发射信号visibilityChanged; 停靠区域可见性变化
void on_dockWidget_topLevelChanged(bool topLevel); //当拖动DockWidget组件使其浮动或者停靠时候会发射信号topLevelChanged; 更新其Action的状态
private:
Ui::ExQTreeWidget *ui;
QLabel *m_labFlie; //状态栏显示当前文件路径
QPixmap m_curPixmap; //显示当前文件图片
float m_ratio; //图片缩放比例
};
#endif // EXQTREEWIDGET_H