first commit

src/imagegallery.cpp

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+#include "imagegallery.h"
+#include <QMouseEvent>
+#include <QFileInfo>
+#include <QProcess>
+#include <QDesktopServices>
+#include <QUrl>
+#include <QPainter>
+#include <QApplication>
+
+// ImageThumbnail implementation
+ImageThumbnail::ImageThumbnail(const QString &filePath, QWidget *parent)
+    : QLabel(parent)
+    , m_filePath(filePath)
+{
+    setFixedSize(THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT);
+    setAlignment(Qt::AlignCenter);
+    setFrameStyle(QFrame::Panel | QFrame::Sunken);
+    setLineWidth(2);
+    setScaledContents(false);
+    setCursor(Qt::PointingHandCursor);
+    setToolTip(filePath);
+    
+    // Enable text wrapping and text interaction
+    setWordWrap(true);
+    setTextInteractionFlags(Qt::TextSelectableByMouse);
+    
+    // Set a minimum size policy
+    setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
+}
+
+void ImageThumbnail::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton) {
+        emit thumbnailClicked(m_filePath);
+    }
+    QLabel::mousePressEvent(event);
+}
+
+// ImageGallery implementation
+ImageGallery::ImageGallery(QWidget *parent)
+    : QWidget(parent)
+    , m_dbManager(nullptr)
+{
+    // Create scroll area
+    m_scrollArea = new QScrollArea(this);
+    m_scrollArea->setWidgetResizable(true);
+    m_scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+    m_scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+    
+    // Create container widget for the grid layout
+    m_containerWidget = new QWidget(m_scrollArea);
+    m_gridLayout = new QGridLayout(m_containerWidget);
+    m_gridLayout->setSpacing(10);
+    
+    m_scrollArea->setWidget(m_containerWidget);
+    
+    // Create layout for the gallery widget
+    QVBoxLayout *mainLayout = new QVBoxLayout(this);
+    mainLayout->addWidget(m_scrollArea);
+    setLayout(mainLayout);
+}
+
+ImageGallery::~ImageGallery()
+{
+    clearGallery();
+}
+
+void ImageGallery::setDatabaseManager(DatabaseManager *dbManager)
+{
+    m_dbManager = dbManager;
+}
+
+void ImageGallery::displayImages(const QList<DatabaseManager::ImageItem> &images)
+{
+    // Clear existing thumbnails
+    clearGallery();
+    
+    const int numImages = images.size();
+    int row = 0, col = 0;
+    
+    for (int i = 0; i < numImages; ++i) {
+        const auto &item = images[i];
+        
+        // Check if file exists before creating thumbnail
+        QFileInfo fileInfo(item.filePath);
+        if (!fileInfo.exists() || !fileInfo.isReadable()) {
+            qDebug() << "Image file does not exist or is not readable:" << item.filePath;
+            continue;  // Skip this image
+        }
+        
+        // Create and add thumbnail
+        QPixmap thumbnail = createThumbnail(item.filePath, THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT);
+        ImageThumbnail *thumbnailLabel = new ImageThumbnail(item.filePath, this);
+        thumbnailLabel->setPixmap(thumbnail);
+        
+        // Set tooltip to show file path and partial OCR text
+        QString tooltipText = item.filePath;
+        if (!item.ocrText.isEmpty()) {
+            // Limit OCR text length in tooltip
+            QString shortOcrText = item.ocrText;
+            if (shortOcrText.length() > 100) {
+                shortOcrText = shortOcrText.left(97) + "...";
+            }
+            tooltipText += "\n\nOCR Text:\n" + shortOcrText;
+        }
+        thumbnailLabel->setToolTip(tooltipText);
+        
+        // Connect the thumbnail click signal
+        connect(thumbnailLabel, &ImageThumbnail::thumbnailClicked, 
+                this, &ImageGallery::handleThumbnailClicked);
+        
+        // Add to grid
+        m_gridLayout->addWidget(thumbnailLabel, row, col);
+        m_thumbnails.append(thumbnailLabel);
+        
+        // Update row and column
+        col++;
+        if (col >= COLUMNS) {
+            col = 0;
+            row++;
+        }
+    }
+    
+    // Display a message when no images are found
+    if (m_thumbnails.isEmpty()) {
+        // Create a special ImageThumbnail for the "no images" message
+        ImageThumbnail *noImagesLabel = new ImageThumbnail("", this);
+        noImagesLabel->setText("No images found matching your search criteria");
+        noImagesLabel->setAlignment(Qt::AlignCenter);
+        m_gridLayout->addWidget(noImagesLabel, 0, 0, 1, COLUMNS);
+        m_thumbnails.append(noImagesLabel);
+    }
+    
+    // Add stretch to the bottom of the grid
+    m_gridLayout->setRowStretch(row + 1, 1);
+}
+
+void ImageGallery::clearGallery()
+{
+    // Remove all thumbnails
+    for (auto thumbnail : m_thumbnails) {
+        m_gridLayout->removeWidget(thumbnail);
+        disconnect(thumbnail, nullptr, this, nullptr);
+        delete thumbnail;
+    }
+    
+    m_thumbnails.clear();
+}
+
+void ImageGallery::handleSearchTextChanged(const QString &searchText)
+{
+    if (m_dbManager) {
+        QList<DatabaseManager::ImageItem> images = m_dbManager->searchImages(searchText);
+        displayImages(images);
+    }
+}
+
+void ImageGallery::handleThumbnailClicked(const QString &filePath)
+{
+    // Show a wait cursor while attempting to open the file
+    QApplication::setOverrideCursor(Qt::WaitCursor);
+    
+    // Check if file exists
+    QFileInfo fileInfo(filePath);
+    if (fileInfo.exists() && fileInfo.isFile()) {
+        try {
+            // Use QDesktopServices to open the file with the default application
+            bool success = QDesktopServices::openUrl(QUrl::fromLocalFile(filePath));
+            if (!success) {
+                qDebug() << "Failed to open file with default application:" << filePath;
+            }
+        } catch (const std::exception &e) {
+            qDebug() << "Exception occurred while opening file:" << e.what();
+        }
+    } else {
+        qDebug() << "File does not exist:" << filePath;
+    }
+    
+    // Restore cursor
+    QApplication::restoreOverrideCursor();
+}
+
+QPixmap ImageGallery::createThumbnail(const QString &filePath, int width, int height)
+{
+    // Verify file exists before attempting to load
+    QFileInfo fileInfo(filePath);
+    if (!fileInfo.exists() || !fileInfo.isReadable()) {
+        qDebug() << "Image file does not exist or is not readable:" << filePath;
+        return createPlaceholderThumbnail(width, height, "File not found");
+    }
+    
+    // Try to load the image
+    QPixmap pixmap(filePath);
+    
+    // If loading failed, create a placeholder
+    if (pixmap.isNull()) {
+        qDebug() << "Failed to load image:" << filePath;
+        return createPlaceholderThumbnail(width, height, "Failed to load");
+    }
+    
+    // Scale pixmap while maintaining aspect ratio
+    return pixmap.scaled(width, height, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+}
+
+QPixmap ImageGallery::createPlaceholderThumbnail(int width, int height, const QString &message)
+{
+    // Create a placeholder image with text
+    QPixmap placeholder(width, height);
+    placeholder.fill(Qt::lightGray);
+    
+    // Draw some text on the placeholder
+    QPainter painter(&placeholder);
+    painter.setPen(Qt::darkGray);
+    
+    // Use a nice font
+    QFont font = painter.font();
+    font.setPointSize(12);
+    font.setBold(true);
+    painter.setFont(font);
+    
+    // Draw the text centered in the pixmap
+    painter.drawText(placeholder.rect(), Qt::AlignCenter, message);
+    
+    // Add a border
+    painter.setPen(QPen(Qt::darkGray, 2));
+    painter.drawRect(1, 1, width-2, height-2);
+    
+    return placeholder;
+}