Support drag&drop for setting a custom cover in the properties dialog

YACReaderLibrary/properties_dialog.cpp

@@ -8,6 +8,7 @@
 #include "yacreader_field_edit.h"
 #include "yacreader_field_plain_text_edit.h"
 #include "db_helper.h"
+#include "yacreader_cover_label.h"
 
 #include <QHBoxLayout>
 #include <QApplication>
@@ -39,7 +40,8 @@ PropertiesDialog::PropertiesDialog(QWidget *parent)
     createTabBar();
     auto rootLayout = new QGridLayout;
 
-    cover = new QLabel();
+    cover = new YACReader::CoverLabel();
+    connect(cover, &YACReader::CoverLabel::imageDropped, this, &PropertiesDialog::loadCustomCoverImageFromPath);
 
     mainLayout = new QGridLayout;
     mainLayout->addWidget(tabBar, 0, 0);
@@ -1165,7 +1167,11 @@ void PropertiesDialog::resetCover()
 void PropertiesDialog::loadCustomCoverImage()
 {
     auto path = YACReader::imageFileLoader(this);
+    loadCustomCoverImageFromPath(path);
+}
 
+void PropertiesDialog::loadCustomCoverImageFromPath(const QString &path)
+{
     if (path.isEmpty()) {
         return;
     }

YACReaderLibrary/properties_dialog.h

@@ -19,6 +19,10 @@ class QComboBox;
 // class YACReaderBusyWidget;
 class QToolButton;
 
+namespace YACReader {
+class CoverLabel;
+}
+
 #include "comic_db.h"
 
 class PropertiesDialog : public QDialog
@@ -33,7 +37,7 @@ private:
     QTabWidget *tabBar;
 
     QWidget *coverBox;
-    QLabel *cover;
+    YACReader::CoverLabel *cover;
     QScrollArea *sa;
 
     QWidget *generalInfoBox;
@@ -175,6 +179,7 @@ public slots:
     void loadPreviousCover();
     void resetCover();
     void loadCustomCoverImage();
+    void loadCustomCoverImageFromPath(const QString &path);
     void setCoverPage(int pageNumber);
     bool close();
 

common/yacreader_global_gui.cpp

@@ -111,3 +111,40 @@ QString YACReader::imageFileLoader(QWidget *parent)
 
     return QFileDialog::getOpenFileName(parent, QObject::tr("Select custom cover"), QDir::homePath(), QObject::tr("Images (%1)").arg(supportedImageFormatsString));
 }
+
+QString YACReader::imagePathFromMimeData(const QMimeData *mimeData)
+{
+    QString filePath;
+    
+    // Check for URLs (drag from browser or file explorer)
+    if (mimeData->hasUrls()) {
+        QList<QUrl> urlList = mimeData->urls();
+        
+        // We only handle the first URL for simplicity
+        if (!urlList.isEmpty()) {
+            QUrl url = urlList.first();
+            if (url.isLocalFile()) {
+                filePath = url.toLocalFile();
+                
+                // Verify it's an image file using the extension
+                QFileInfo fileInfo(filePath);
+                QString extension = fileInfo.suffix().toLower();
+                QList<QByteArray> supportedFormats = QImageReader::supportedImageFormats();
+                bool isSupported = false;
+                
+                for (const QByteArray &format : supportedFormats) {
+                    if (extension == QString(format).toLower()) {
+                        isSupported = true;
+                        break;
+                    }
+                }
+                
+                if (!isSupported) {
+                    filePath.clear(); // Not a supported image format
+                }
+            }
+        }
+    }
+    
+    return filePath;
+}

common/yacreader_global_gui.h

@@ -113,5 +113,6 @@ QString addExtensionToIconPathInToolbar(const QString &path);
 QAction *actionWithCustomIcon(const QIcon &icon, QAction *action);
 QPixmap hdpiPixmap(const QString &file, QSize size);
 QString imageFileLoader(QWidget *parent);
+QString imagePathFromMimeData(const QMimeData *mimeData);
 }
 #endif

custom_widgets/custom_widgets_yacreaderlibrary.pri

@@ -21,7 +21,8 @@ HEADERS += \
         $$PWD/yacreader_library_list_widget.h \
         $$PWD/yacreader_library_item_widget.h \
         $$PWD/yacreader_treeview.h \
-        $$PWD/yacreader_busy_widget.h
+        $$PWD/yacreader_busy_widget.h \
+        $$PWD/yacreader_cover_label.h
 !CONFIG(no_opengl){
 	HEADERS += $$PWD/yacreader_gl_flow_config_widget.h
 }
@@ -50,8 +51,8 @@ SOURCES += \
         $$PWD/yacreader_library_list_widget.cpp \
         $$PWD/yacreader_library_item_widget.cpp \
         $$PWD/yacreader_treeview.cpp \
-        $$PWD/yacreader_busy_widget.cpp
-
+        $$PWD/yacreader_busy_widget.cpp \
+        $$PWD/yacreader_cover_label.cpp
 !CONFIG(no_opengl){
         SOURCES += $$PWD/yacreader_gl_flow_config_widget.cpp
 }

custom_widgets/yacreader_cover_label.cpp

@@ -0,0 +1,31 @@
+#include "yacreader_cover_label.h"
+#include "yacreader_global_gui.h"
+
+YACReader::CoverLabel::CoverLabel(QWidget *parent)
+    : QLabel(parent)
+{
+    setAcceptDrops(true);
+}
+
+void YACReader::CoverLabel::dragEnterEvent(QDragEnterEvent *event)
+{
+    if (event->mimeData()->hasUrls() && !YACReader::imagePathFromMimeData(event->mimeData()).isEmpty()) {
+        event->acceptProposedAction();
+    }
+}
+
+void YACReader::CoverLabel::dragMoveEvent(QDragMoveEvent *event)
+{
+    if (event->mimeData()->hasUrls()) {
+        event->acceptProposedAction();
+    }
+}
+
+void YACReader::CoverLabel::dropEvent(QDropEvent *event)
+{
+    QString path = YACReader::imagePathFromMimeData(event->mimeData());
+    if (!path.isEmpty()) {
+        emit imageDropped(path);
+        event->acceptProposedAction();
+    }
+}

custom_widgets/yacreader_cover_label.h

@@ -0,0 +1,29 @@
+#ifndef DROP_LABEL_H
+#define DROP_LABEL_H
+
+#include <QLabel>
+#include <QDragEnterEvent>
+#include <QDropEvent>
+#include <QMimeData>
+
+namespace YACReader {
+
+class CoverLabel : public QLabel
+{
+    Q_OBJECT
+
+public:
+    explicit CoverLabel(QWidget *parent = nullptr);
+
+protected:
+    void dragEnterEvent(QDragEnterEvent *event) override;
+    void dragMoveEvent(QDragMoveEvent *event) override;
+    void dropEvent(QDropEvent *event) override;
+
+signals:
+    void imageDropped(const QString &path);
+};
+
+}
+
+#endif // DROP_LABEL_H