57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
|
#ifndef DIALOGIMAGEVIEWER_H
|
||
|
|
#define DIALOGIMAGEVIEWER_H
|
||
|
|
|
||
|
|
#include <QDialog>
|
||
|
|
#include <QImage>
|
||
|
|
#include <QLabel>
|
||
|
|
#include <QScrollArea>
|
||
|
|
#include <QWheelEvent>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief 图像查看对话框
|
||
|
|
* 支持滚轮缩放、拖拽平移、双击还原
|
||
|
|
*/
|
||
|
|
class DialogImageViewer : public QDialog
|
||
|
|
{
|
||
|
|
Q_OBJECT
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit DialogImageViewer(QWidget* parent = nullptr);
|
||
|
|
~DialogImageViewer();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief 设置要显示的图像
|
||
|
|
* @param image 图像
|
||
|
|
* @param title 标题
|
||
|
|
*/
|
||
|
|
void setImage(const QImage& image, const QString& title = "");
|
||
|
|
|
||
|
|
protected:
|
||
|
|
void wheelEvent(QWheelEvent* event) override;
|
||
|
|
void mousePressEvent(QMouseEvent* event) override;
|
||
|
|
void mouseMoveEvent(QMouseEvent* event) override;
|
||
|
|
void mouseReleaseEvent(QMouseEvent* event) override;
|
||
|
|
void mouseDoubleClickEvent(QMouseEvent* event) override;
|
||
|
|
void keyPressEvent(QKeyEvent* event) override;
|
||
|
|
|
||
|
|
private:
|
||
|
|
void setupUI();
|
||
|
|
void updateImageDisplay();
|
||
|
|
void resetZoom();
|
||
|
|
|
||
|
|
private:
|
||
|
|
QScrollArea* m_scrollArea = nullptr;
|
||
|
|
QLabel* m_imageLabel = nullptr;
|
||
|
|
QLabel* m_infoLabel = nullptr;
|
||
|
|
QImage m_originalImage;
|
||
|
|
double m_scaleFactor = 1.0;
|
||
|
|
bool m_dragging = false;
|
||
|
|
QPoint m_lastPos;
|
||
|
|
|
||
|
|
static constexpr double MIN_SCALE = 0.1;
|
||
|
|
static constexpr double MAX_SCALE = 10.0;
|
||
|
|
static constexpr double SCALE_STEP = 0.1;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // DIALOGIMAGEVIEWER_H
|