make a snippet without cut cjk char

libsearch/common.h

@@ -4,6 +4,7 @@
 #define UKUI_SEARCH_PIPE_PATH (QDir::homePath()+"/.config/org.ukui/ukui-search/ukuisearch").toLocal8Bit().constData()
 #define FILE_SEARCH_VALUE "0"
 #define DIR_SEARCH_VALUE "1"
+#define LABEL_MAX_WIDTH 300
 
 #define HOME_PATH QDir::homePath()
 static const QMap<QString, bool> targetFileTypeMap = {

libsearch/file-utils.cpp

@@ -796,3 +796,41 @@ QString FileUtils::escapeHtml(const QString &str)
     temp.replace(">", ">");
     return temp;
 }
+
+QString FileUtils::chineseSubString(const std::string &myStr, int start, int length)
+{
+    std::string afterSub = "";
+    //越界保护
+    if(start < 0 || length < 0){
+        return " ";
+    }
+    if (length >= myStr.length()) {
+        return QString::fromStdString(myStr);
+    }
+
+    QString sub = "";
+    QFont ft(QApplication::font().family(),QApplication::font().pointSize());
+    QFontMetrics fm (ft);
+
+    if (start + length <= myStr.length()) {
+        afterSub = myStr.substr(start,length);    //截取
+        sub = QString::fromStdString(afterSub);    //转QString
+
+        if(start + length < myStr.length()){
+           sub.replace(sub.length()-3,3,"...");    //替换后三位
+        }
+        else{
+           sub.append("...");   //直接加
+        }
+        sub = fm.elidedText(sub, Qt::ElideRight, 2*LABEL_MAX_WIDTH);    //超过两行则省略
+    }
+    else {
+        int newStart = myStr.length()-length;    //更新截取位置
+        afterSub = myStr.substr(newStart, length);
+        sub=QString::fromStdString(afterSub);
+
+        sub.replace(0,3,"...").append("...");
+        sub = fm.elidedText(sub, Qt::ElideLeft, 2*LABEL_MAX_WIDTH);
+    }
+    return sub;
+}

libsearch/file-utils.h

@@ -38,6 +38,7 @@
 #include <QDesktopServices>
 #include <QApplication>
 #include <QClipboard>
+#include <QFontMetrics>
 
 #include <quazip/quazipfile.h>
 #include <stdio.h>
@@ -53,12 +54,11 @@
 
 #include "libsearch_global.h"
 #include "gobject-template.h"
-
+#include "common.h"
 //#define INITIAL_STATE 0
 //#define CREATING_INDEX 1
 //#define FINISH_CREATING_INDEX 2
 #define MAX_CONTENT_LENGTH 20480000
-
 namespace Zeeker {
 class  LIBSEARCH_EXPORT FileUtils {
 public:
@@ -90,6 +90,7 @@ public:
     static bool openFile(QString &path, bool openInDir = false);
     static bool copyPath(QString &path);
     static QString escapeHtml(const QString & str);
+    static QString chineseSubString(const std::string &myStr,int start,int length);
     static size_t _max_index_count;
     static size_t _current_index_count; //this one has been Abandoned,do not use it.
     static unsigned short _index_status;

libsearch/index/file-search-plugin.cpp

@@ -450,7 +450,7 @@ QWidget *FileContengSearchPlugin::detailPage(const ResultInfo &ri)
         m_nameLabel->setToolTip(ri.name);
     }
 
-    m_snippetLabel->setText(getHtmlText(ri.description.at(0).value, m_keyWord));
+    m_snippetLabel->setText(getHtmlText(wrapData(m_snippetLabel,ri.description.at(0).value), m_keyWord));
     m_pathLabel2->setText(m_pathLabel2->fontMetrics().elidedText(m_currentActionKey, Qt::ElideRight, m_pathLabel2->width()));
     m_pathLabel2->setToolTip(m_currentActionKey);
     m_timeLabel2->setText(ri.description.at(2).value);
@@ -480,6 +480,40 @@ QString FileContengSearchPlugin::getHtmlText(const QString &text, const QString
     return htmlString;
 }
 
+QString FileContengSearchPlugin::wrapData(QLabel *p_label, const QString &text)
+{
+    QString wrapText = text;
+
+    QFontMetrics fontMetrics = p_label->fontMetrics();
+    int textSize = fontMetrics.width(wrapText);
+
+    if(textSize > LABEL_MAX_WIDTH){
+        int lastIndex = 0;
+        int count = 0;
+
+        for(int i = lastIndex; i < wrapText.length(); i++) {
+
+            if(fontMetrics.width(wrapText.mid(lastIndex, i - lastIndex)) == LABEL_MAX_WIDTH) {
+                lastIndex = i;
+                wrapText.insert(i, '\n');
+                count++;
+            } else if(fontMetrics.width(wrapText.mid(lastIndex, i - lastIndex)) > LABEL_MAX_WIDTH) {
+                lastIndex = i;
+                wrapText.insert(i - 1, '\n');
+                count++;
+            } else {
+                continue;
+            }
+
+            if(count == 2){
+                break;
+            }
+        }
+    }
+    p_label->setText(wrapText);
+    return wrapText;
+}
+
 void FileContengSearchPlugin::initDetailPage()
 {
     m_detailPage = new QWidget();
@@ -509,7 +543,7 @@ void FileContengSearchPlugin::initDetailPage()
     m_line_1->setStyleSheet("QFrame{background: rgba(0,0,0,0.2);}");
 
     m_snippetLabel = new QLabel(m_detailPage);
-    m_snippetLabel->setWordWrap(true);
+//    m_snippetLabel->setWordWrap(true);
     m_snippetLabel->setContentsMargins(8, 0, 8, 0);
 
     m_pathFrame = new QFrame(m_detailPage);

libsearch/index/file-search-plugin.h

@@ -143,6 +143,7 @@ public:
 //    QWidget *previewPage(QString key, int type, QWidget *parent = nullptr);
     QWidget *detailPage(const ResultInfo &ri);
     QString getHtmlText(const QString & text, const QString & keyword);
+    QString wrapData(QLabel *p_label, const QString &text);
 private:
     void initDetailPage();
     QWidget *m_detailPage = nullptr;

libsearch/index/search-manager.cpp

@@ -364,14 +364,15 @@ int FileContentSearch::getResult(Xapian::MSet &result, std::string &keyWord) {
 //        }
         //fix me: make a snippet without cut cjk char.
         auto pos = term.positionlist_begin();
-        QString snippet;
+        QString snippet = FileUtils::chineseSubString(data,*pos,120);
-        if(data.length() - *pos < 120) {
+
-            std::string s = data.substr((data.length() < 120) ? 0 : (data.length() - 120), 120);
+//        if(data.length() - *pos < 120) {
-            snippet = QString::fromStdString(s);
+//            std::string s = data.substr((data.length() < 120) ? 0 : (data.length() - 120), 120);
-        } else {
+//            snippet = QString::fromStdString(s);
-            std::string s = data.substr(*pos, 120);
+//        } else {
-            snippet = QString::fromStdString(s);
+//            std::string s = data.substr(*pos, 120);
-        }
+//            snippet = QString::fromStdString(s);
+//        }
 
         ri.description.prepend(SearchPluginIface::DescriptionInfo{"",snippet});
         QString().swap(snippet);