feat: Add XPS text extraction and character-level selection

.gitignore

@@ -39,3 +39,4 @@ build
 .promptx/
 .spec-workflow/
 .cursorindexingignore
+.cursor/

reader/browser/BrowserWord.cpp

@@ -44,10 +44,7 @@ void BrowserWord::setSelectable(bool enable)
 
 QRectF BrowserWord::boundingRect() const
 {
-    // qCDebug(appLog) << "BrowserWord::boundingRect() - Calculating bounding rectangle";
-    QRectF rect = QRectF(m_word.boundingBox.x() * m_scaleFactor - 1, m_word.boundingBox.y() * m_scaleFactor - 1, m_word.boundingBox.width() * m_scaleFactor + 2, m_word.boundingBox.height() * m_scaleFactor + 2);
-    // qCDebug(appLog) << "BrowserWord::boundingRect() - Bounding rectangle:" << rect;
-    return rect;
+    return QRectF(m_word.boundingBox.x() * m_scaleFactor - 1, m_word.boundingBox.y() * m_scaleFactor - 1, m_word.boundingBox.width() * m_scaleFactor + 2, m_word.boundingBox.height() * m_scaleFactor + 2);
 }
 
 QRectF BrowserWord::boundingBox() const

reader/document/XpsDocumentAdapter.cpp

@@ -5,15 +5,18 @@
 
 #include "XpsDocumentAdapter.h"
 
+#include "XpsTextExtractor.h"
 #include "ddlog.h"
 
 #include <QByteArray>
 #include <QDateTime>
 #include <QFile>
 #include <QMutexLocker>
 #include <QRectF>
 #include <functional>
 
+#include <algorithm>
+
 #ifdef signals
 #pragma push_macro("signals")
 #undef signals
@@ -795,8 +798,63 @@
 
 QString XpsPageAdapter::text(const QRectF &rect) const
 {
-    Q_UNUSED(rect)
-    return QString();
+    if (!m_document || rect.isEmpty()) {
+        return QString();
+    }
+
+    // 直接调用文本提取器，避免通过非const的words()方法
+    QString filePath = m_document->filePath();
+    if (filePath.isEmpty()) {
+        qCWarning(appLog) << "XpsPageAdapter::text() - Empty file path";
+        return QString();
+    }
+
+    QList<Word> allWords = XpsTextExtractor::extractWords(filePath, m_pageIndex);
+    if (allWords.isEmpty()) {
+        return QString();
+    }
+
+    // 筛选在矩形区域内的words并按位置排序
+    QList<Word> selectedWords;
+    for (const Word &word : allWords) {
+        if (rect.intersects(word.boundingBox)) {
+            selectedWords.append(word);
+        }
+    }
+
+    if (selectedWords.isEmpty()) {
+        return QString();
+    }
+
+    // 按位置排序（从上到下，从左到右）
+    std::sort(selectedWords.begin(), selectedWords.end(), [](const Word &a, const Word &b) {
+        const double yThreshold = 5.0; // Y坐标容差
+        if (qAbs(a.boundingBox.y() - b.boundingBox.y()) > yThreshold) {
+            return a.boundingBox.y() < b.boundingBox.y();
+        }
+        return a.boundingBox.x() < b.boundingBox.x();
+    });
+
+    // 拼接文本，处理换行
+    QStringList textParts;
+    qreal lastY = selectedWords.first().boundingBox.y();
+    const double yThreshold = 5.0;
+
+    for (const Word &word : selectedWords) {
+        // 检测换行
+        if (qAbs(word.boundingBox.y() - lastY) > yThreshold && !textParts.isEmpty()) {
+            // 如果Y坐标变化较大，可能是新行，添加换行符（可选）
+            // 这里先不添加，让调用者处理
+        }
+        textParts.append(word.text);
+        lastY = word.boundingBox.y();
+    }
+
+    QString result = textParts.join(QStringLiteral(" "));
+
+    qCDebug(appLog) << "XpsPageAdapter::text() - Extracted text for rect" << rect << ":" << result;
+
+    return result.simplified();
 }
 
 QVector<PageSection> XpsPageAdapter::search(const QString &text, bool matchCase, bool wholeWords) const
@@ -814,7 +872,20 @@
 
 QList<Word> XpsPageAdapter::words()
 {
-    return {};
+    if (!m_document) {
+        qCWarning(appLog) << "XpsPageAdapter::words() - Invalid document";
+        return {};
+    }
+
+    // 获取文档文件路径
+    QString filePath = m_document->filePath();
+    if (filePath.isEmpty()) {
+        qCWarning(appLog) << "XpsPageAdapter::words() - Empty file path";
+        return {};
+    }
+
+    // 使用文本提取器提取文本
+    return XpsTextExtractor::extractWords(filePath, m_pageIndex);
 }
 
 } // namespace deepin_reader

reader/document/XpsDocumentAdapter.h

@@ -40,6 +40,8 @@ class XpsDocumentAdapter : public Document
     QImage renderPage(int pageIndex, int width, int height, const QRect &slice) const;
     QSizeF pageSize(int pageIndex) const;
 
+    QString filePath() const { return m_filePath; }
+
 private:
     class Handle;