speed out selection count calculation

RedPandaIDE/mainwindow.cpp

@@ -1517,7 +1517,7 @@ void MainWindow::updateStatusbarForLineCol(const Editor* e, bool clear)
                         .arg(e->caretY())
                         .arg(e->document()->count())
                         .arg(col)
-                        .arg(e->selText().length());
+                        .arg(e->selCount());
             } else {
                 msg = tr("Line: %1/%2 Col: %3")
                         .arg(e->caretY())
@@ -1531,7 +1531,7 @@ void MainWindow::updateStatusbarForLineCol(const Editor* e, bool clear)
                         .arg(e->document()->count())
                         .arg(e->caretX())
                         .arg(e->lineText().length())
-                        .arg(e->selText().length());
+                        .arg(e->selCount());
             } else {
                 msg = tr("Line: %1/%2 Char: %3/%4")
                         .arg(e->caretY())

libs/qsynedit/qsynedit/qsynedit.cpp

@@ -4517,6 +4517,27 @@ QString QSynEdit::selText() const
     return "";
 }
 
+int QSynEdit::selCount() const
+{
+    if (!selAvail())
+        return 0;
+    if (mActiveSelectionMode == SelectionMode::Column)
+        return selText().length();
+    BufferCoord begin=blockBegin();
+    BufferCoord end = blockEnd();
+    if (begin.line == end.line)
+        return (end.ch - begin.ch);
+    int count = mDocument->getLine(begin.line-1).length()+1-begin.ch;
+    int lineEndCount = lineBreak().length();
+    count += lineEndCount;
+    for (int i=begin.line;i<end.line-1;i++) {
+        count += mDocument->getLine(i).length();
+        count += lineEndCount;
+    }
+    count+= end.ch-1;
+    return count;
+}
+
 QStringList QSynEdit::getContent(BufferCoord startPos, BufferCoord endPos, SelectionMode mode) const
 {
     QStringList result;

libs/qsynedit/qsynedit/qsynedit.h

@@ -384,6 +384,7 @@ public:
     bool empty();
 
     QString selText() const;
+    int selCount() const;
 
     QStringList getContent(BufferCoord startPos, BufferCoord endPos, SelectionMode mode) const;