feat: wheel events

app/install.sh

@@ -0,0 +1,17 @@
+#!/bin/env bash
+
+path="$(dirname "$(readlink -f "$0")")"
+
+cmake -S "$path/.." -B "$path/../build" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX="$HOME"/.local || exit 1
+
+cmake --build "$path/../build" --target install || exit 1
+
+cp "$path/wallpaper_chooser.desktop" "$HOME"/.local/share/applications/wallpaper_chooser.desktop
+
+echo -e "\nExec=$HOME/.local/bin/wallpaper_chooser" >> "$HOME"/.local/share/applications/wallpaper_chooser.desktop
+
+if command -v update-desktop-database &> /dev/null; then
+    update-desktop-database "$HOME"/.local/share/applications/
+fi

app/wallpaper_chooser.desktop

@@ -0,0 +1,8 @@
+[Desktop Entry]
+Version=1.0
+Type=Application
+Name=Wallpaper Chooser
+Comment=A small wallpaper utility made with Qt
+Terminal=false
+Categories=Application;Utility;
+StartupNotify=true

src/images_carousel.cpp

@@ -1,7 +1,7 @@
 /*
  * @Author: Uyanide pywang0608@foxmail.com
  * @Date: 2025-08-05 01:22:53
- * @LastEditTime: 2025-08-06 01:27:49
+ * @LastEditTime: 2025-08-06 02:12:46
  * @Description: Animated carousel widget for displaying and selecting images.
  */
 #include "images_carousel.h"
@@ -39,6 +39,7 @@ ImagesCarousel::ImagesCarousel(const double itemAspectRatio,
       m_sortType(sortType),
       m_sortReverse(sortReverse) {
     ui->setupUi(this);
+    m_scrollArea = dynamic_cast<ImagesCarouselScrollArea*>(ui->scrollArea);
 
     m_imagesLayout = dynamic_cast<QHBoxLayout*>(ui->scrollAreaWidgetContents->layout());
 
@@ -245,8 +246,10 @@ void ImagesCarousel::_focusCurrImage() {
             this,
             [this]() {
                 m_suppressAutoFocus = false;
+                m_scrollArea->setBlockInput(false);
             });
     m_suppressAutoFocus = true;
+    m_scrollArea->setBlockInput(true);
     m_scrollAnimation->start();
 }
 

src/images_carousel.h

@@ -1,7 +1,7 @@
 /*
  * @Author: Uyanide pywang0608@foxmail.com
  * @Date: 2025-08-05 01:22:53
- * @LastEditTime: 2025-08-06 01:32:56
+ * @LastEditTime: 2025-08-06 02:10:43
  * @Description: Animated carousel widget for displaying and selecting images.
  */
 #ifndef IMAGES_CAROUSEL_H
@@ -24,7 +24,11 @@
 
 #include "config.h"
 
+class ImageData;
+class ImageItem;
+class ImageLoader;
 class ImagesCarousel;
+class ImagesCarouselScrollArea;
 
 /**
  * @brief Data structure to hold image information
@@ -150,6 +154,7 @@ class ImagesCarousel : public QWidget {
     bool m_suppressAutoFocus               = false;
     int m_pendingScrollValue               = 0;
     QTimer* m_scrollDebounceTimer          = nullptr;
+    ImagesCarouselScrollArea* m_scrollArea = nullptr;
 
   signals:
     void imageFocused(const QString& path, const int index, const int count);
@@ -166,14 +171,35 @@ class ImagesCarouselScrollArea : public QScrollArea {
         // setWidgetResizable(true);
     }
 
+    void setBlockInput(bool block) { m_blockInput = block; }
+
   protected:
     void keyPressEvent(QKeyEvent* event) override {
+        if (m_blockInput) {
+            event->ignore();
+            return;
+        }
         if (event->key() == Qt::Key_Left || event->key() == Qt::Key_Right) {
             event->ignore();
         } else {
             QScrollArea::keyPressEvent(event);
         }
     }
+
+    void wheelEvent(QWheelEvent* event) override {
+        if (m_blockInput) {
+            event->ignore();
+            return;
+        }
+        if (event->angleDelta().y() != 0) {
+            event->ignore();
+        } else {
+            QScrollArea::wheelEvent(event);
+        }
+    }
+
+  private:
+    bool m_blockInput = false;
 };
 
 #endif  // IMAGES_CAROUSEL_H

src/main_window.cpp

@@ -1,7 +1,7 @@
 /*
  * @Author: Uyanide pywang0608@foxmail.com
  * @Date: 2025-08-05 00:37:58
- * @LastEditTime: 2025-08-06 00:48:11
+ * @LastEditTime: 2025-08-06 02:13:59
  * @Description: MainWindow implementation.
  */
 #include "main_window.h"
@@ -70,6 +70,15 @@ void MainWindow::keyPressEvent(QKeyEvent *event) {
     }
 }
 
+void MainWindow::wheelEvent(QWheelEvent *event) {
+    if (event->angleDelta().y() > 0) {
+        m_carousel->focusPrevImage();
+    } else {
+        m_carousel->focusNextImage();
+    }
+    event->accept();
+}
+
 void MainWindow::onConfirm() {
     close();
     const auto path = m_carousel->getCurrentImagePath();

src/main_window.h

@@ -1,7 +1,7 @@
 /*
  * @Author: Uyanide pywang0608@foxmail.com
  * @Date: 2025-08-05 00:37:58
- * @LastEditTime: 2025-08-06 00:47:04
+ * @LastEditTime: 2025-08-06 02:13:47
  * @Description: MainWindow implementation.
  */
 #ifndef MAINWINDOW_H
@@ -33,6 +33,7 @@ class MainWindow : public QMainWindow {
 
   protected:
     void keyPressEvent(QKeyEvent *event) override;
+    void wheelEvent(QWheelEvent *event) override;
 
   private:
     void _setupUI();