wip: functioning

src/images_carousel.h

@@ -0,0 +1,131 @@
+/*
+ * @Author: Uyanide pywang0608@foxmail.com
+ * @Date: 2025-08-05 01:22:53
+ * @LastEditTime: 2025-08-05 17:25:34
+ * @Description: Animated carousel widget for displaying and selecting images.
+ */
+#ifndef IMAGES_CAROUSEL_H
+#define IMAGES_CAROUSEL_H
+
+#include <QKeyEvent>
+#include <QLabel>
+#include <QMutex>
+#include <QObject>
+#include <QPixmap>
+#include <QPropertyAnimation>
+#include <QQueue>
+#include <QRunnable>
+#include <QScrollArea>
+#include <QThreadPool>
+#include <QTimer>
+#include <QWidget>
+
+class ImagesCarousel;
+
+struct ImageData {
+    QString path;
+    QPixmap pixmap;
+
+    ImageData() = default;
+
+    explicit ImageData(const QString& p);
+};
+
+class ImageItem : public QLabel {
+    Q_OBJECT
+
+  public:
+    explicit ImageItem(const ImageData* data,
+                       const int itemWidth,
+                       const int itemHeight,
+                       const int itemFocusWidth,
+                       const int itemFocusHeight,
+                       QWidget* parent = nullptr);
+
+    [[nodiscard]] const QString& getPath() const { return m_data->path; }
+
+    [[nodiscard]] const QPixmap& getPixmap() const { return m_data->pixmap; }
+
+  public slots:
+    void focusImage();
+    void unfocusImage();
+
+  private:
+    const ImageData* m_data;
+    QSize m_itemSize;
+    QSize m_itemFocusSize;
+    QPropertyAnimation* m_scaleAnimation = nullptr;
+};
+
+class ImageLoader : public QRunnable {
+  public:
+    ImageLoader(const QString& path, ImagesCarousel* carousel);
+    void run() override;
+
+  private:
+    QString m_path;
+    ImagesCarousel* m_carousel;
+};
+
+namespace Ui {
+class ImagesCarousel;
+}
+
+class ImagesCarousel : public QWidget {
+    Q_OBJECT
+
+  public:
+    explicit ImagesCarousel(QWidget* parent = nullptr);
+    ~ImagesCarousel();
+
+    static constexpr int s_itemWidth         = 320;
+    static constexpr int s_itemHeight        = 200;
+    static constexpr int s_itemFocusWidth    = 480;
+    static constexpr int s_itemFocusHeight   = 300;
+    static constexpr int s_animationDuration = 300;
+
+    [[nodiscard]] QString getCurrentImagePath() const {
+        if (m_currentIndex < 0 || m_currentIndex >= m_loadedImages.size()) {
+            return "";
+        }
+        return m_loadedImages[m_currentIndex]->getPath();
+    }
+
+  public slots:
+    void addImageToQueue(const ImageData* data);
+    void appendImage(const QString& path);
+    void focusNextImage();
+    void focusPrevImage();
+    void unfocusCurrImage();
+    void focusCurrImage();
+
+  private slots:
+    void updateImages();
+
+  private:
+    Ui::ImagesCarousel* ui;
+    QMutex m_queueMutex;
+    QQueue<ImageItem*> m_imageQueue;
+    QList<ImageItem*> m_loadedImages;
+    QTimer* m_updateTimer;
+    int m_currentIndex = 0;
+    QPropertyAnimation* m_scrollAnimation;
+};
+
+class ImagesCarouselScrollArea : public QScrollArea {
+    Q_OBJECT
+
+  public:
+    explicit ImagesCarouselScrollArea(QWidget* parent = nullptr)
+        : QScrollArea(parent) {
+        setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+        setWidgetResizable(true);
+    }
+
+  protected:
+    void keyPressEvent(QKeyEvent* event) override {
+        event->ignore();
+    }
+};
+
+#endif  // IMAGES_CAROUSEL_H