add line numbers to plugin editor

mscore/CMakeLists.txt

@@ -83,6 +83,7 @@ QT4_WRAP_CPP (mocs
       editstringdata.h editraster.h mediadialog.h chordeditor.h chordview.h album.h layer.h
       webpage.h inspector.h inspectorBase.h inspectorBeam.h masterpalette.h
       inspectorGroupElement.h inspectorImage.h waveview.h plugins.h pluginCreator.h
+      qmledit.h
       ${OMR_MOCS}
       )
 
@@ -176,7 +177,7 @@ add_executable ( ${ExecutableName}
       inspector.cpp dragelement.cpp svggenerator.cpp
       inspectorBase.cpp inspectorBeam.cpp masterpalette.cpp
       inspectorGroupElement.cpp dragdrop.cpp inspectorImage.cpp
-      waveview.cpp musicxmlsupport.cpp pluginCreator.cpp
+      waveview.cpp musicxmlsupport.cpp pluginCreator.cpp qmledit.cpp
       ${OMR_FILES}
       ${AUDIO}
       )

mscore/pluginCreator.ui

@@ -71,7 +71,7 @@
       <property name="orientation">
        <enum>Qt::Vertical</enum>
       </property>
-      <widget class="QPlainTextEdit" name="textEdit"/>
+      <widget class="QmlEdit" name="textEdit"/>
       <widget class="QTextBrowser" name="log"/>
      </widget>
     </item>
@@ -113,6 +113,13 @@
    </property>
   </action>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>QmlEdit</class>
+   <extends>QPlainTextEdit</extends>
+   <header>qmledit.h</header>
+  </customwidget>
+ </customwidgets>
  <resources/>
  <connections/>
 </ui>

mscore/qmledit.cpp

@@ -0,0 +1,136 @@
+//=============================================================================
+//  MuseScore
+//  Music Composition & Notation
+//
+//  Copyright (C) 2002-2011 Werner Schweer
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License version 2
+//  as published by the Free Software Foundation and appearing in
+//  the file LICENCE.GPL
+//=============================================================================
+
+#include "qmledit.h"
+
+
+//---------------------------------------------------------
+//   QmlEdit
+//---------------------------------------------------------
+
+QmlEdit::QmlEdit(QWidget* parent)
+   : QPlainTextEdit(parent)
+      {
+      lineNumberArea = new LineNumberArea(this);
+
+      connect(this, SIGNAL(blockCountChanged(int)),   SLOT(updateLineNumberAreaWidth(int)));
+      connect(this, SIGNAL(updateRequest(QRect,int)), SLOT(updateLineNumberArea(QRect,int)));
+      connect(this, SIGNAL(cursorPositionChanged()),  SLOT(highlightCurrentLine()));
+
+      updateLineNumberAreaWidth(0);
+      highlightCurrentLine();
+      }
+
+//---------------------------------------------------------
+//   lineNumberAreaWidth
+//---------------------------------------------------------
+
+int QmlEdit::lineNumberAreaWidth()
+      {
+      int digits = 1;
+      int max = qMax(1, blockCount());
+      while (max >= 10) {
+            max /= 10;
+            ++digits;
+            }
+      int space = 6 + fontMetrics().width(QLatin1Char('9')) * digits;
+      return space;
+      }
+
+//---------------------------------------------------------
+//   updateLineNumberAreaWidth
+//---------------------------------------------------------
+
+void QmlEdit::updateLineNumberAreaWidth(int /* newBlockCount */)
+      {
+      setViewportMargins(lineNumberAreaWidth(), 0, 0, 0);
+      }
+
+//---------------------------------------------------------
+//   updateLineNumberArea
+//---------------------------------------------------------
+
+void QmlEdit::updateLineNumberArea(const QRect& rect, int dy)
+      {
+      if (dy)
+            lineNumberArea->scroll(0, dy);
+      else
+            lineNumberArea->update(0, rect.y(), lineNumberArea->width(), rect.height());
+
+      if (rect.contains(viewport()->rect()))
+            updateLineNumberAreaWidth(0);
+      }
+
+//---------------------------------------------------------
+//   resizeEvent
+//---------------------------------------------------------
+
+void QmlEdit::resizeEvent(QResizeEvent *e)
+      {
+      QPlainTextEdit::resizeEvent(e);
+
+      QRect cr = contentsRect();
+      lineNumberArea->setGeometry(QRect(cr.left(), cr.top(), lineNumberAreaWidth(), cr.height()));
+      }
+
+//---------------------------------------------------------
+//   highlightCurrentLine
+//---------------------------------------------------------
+
+void QmlEdit::highlightCurrentLine()
+      {
+      QList<QTextEdit::ExtraSelection> extraSelections;
+
+      if (!isReadOnly()) {
+            QTextEdit::ExtraSelection selection;
+
+            QColor lineColor = QColor(Qt::darkGray);
+
+            selection.format.setBackground(lineColor);
+            selection.format.setProperty(QTextFormat::FullWidthSelection, true);
+            selection.cursor = textCursor();
+            selection.cursor.clearSelection();
+            extraSelections.append(selection);
+            }
+
+      setExtraSelections(extraSelections);
+      }
+
+//---------------------------------------------------------
+//   lineNumberAreaPaintEvent
+//---------------------------------------------------------
+
+void QmlEdit::lineNumberAreaPaintEvent(QPaintEvent *event)
+      {
+      QPainter painter(lineNumberArea);
+      painter.fillRect(event->rect(), Qt::lightGray);
+
+      QTextBlock block = firstVisibleBlock();
+      int blockNumber = block.blockNumber();
+      int top = (int) blockBoundingGeometry(block).translated(contentOffset()).top();
+      int bottom = top + (int) blockBoundingRect(block).height();
+
+      int w = lineNumberArea->width();
+      int h = fontMetrics().height();
+      while (block.isValid() && top <= event->rect().bottom()) {
+            if (block.isVisible() && bottom >= event->rect().top()) {
+                  QString number = QString::number(blockNumber + 1);
+                  painter.setPen(Qt::black);
+                  painter.drawText(0, top, w-3, h, Qt::AlignRight, number);
+                  }
+
+            block = block.next();
+            top = bottom;
+            bottom = top + (int) blockBoundingRect(block).height();
+            ++blockNumber;
+            }
+       }

mscore/qmledit.h

@@ -0,0 +1,59 @@
+//=============================================================================
+//  MuseScore
+//  Music Composition & Notation
+//
+//  Copyright (C) 2002-2011 Werner Schweer
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License version 2
+//  as published by the Free Software Foundation and appearing in
+//  the file LICENCE.GPL
+//=============================================================================
+
+#ifndef __QML_EDIT_H__
+#define __QML_EDIT_H__
+
+//---------------------------------------------------------
+//   QmlEdit
+//---------------------------------------------------------
+
+class QmlEdit : public QPlainTextEdit {
+      Q_OBJECT
+
+      QWidget* lineNumberArea;
+
+   private slots:
+      void updateLineNumberAreaWidth(int);
+      void highlightCurrentLine();
+      void updateLineNumberArea(const QRect&, int);
+
+   protected:
+      void resizeEvent(QResizeEvent*);
+
+   public:
+      QmlEdit(QWidget* parent = 0);
+      void lineNumberAreaPaintEvent(QPaintEvent*);
+      int lineNumberAreaWidth();
+      };
+
+//---------------------------------------------------------
+//   LineNumberArea
+//---------------------------------------------------------
+
+class LineNumberArea : public QWidget {
+      Q_OBJECT
+      QmlEdit* editor;
+
+      QSize sizeHint() const {
+            return QSize(editor->lineNumberAreaWidth(), 0);
+            }
+      void paintEvent(QPaintEvent* event) {
+            editor->lineNumberAreaPaintEvent(event);
+            }
+
+   public:
+      LineNumberArea(QmlEdit* parent) : QWidget(parent) { editor = parent; }
+      };
+
+#endif
+

share/plugins/colornotes.qml

@@ -40,7 +40,7 @@ MuseScore {
 
             if (typeof curScore === 'undefined')
                   return;
-            var cursor = newCursor();
+            var cursor = curScore.newCursor();
             for (var track = 0; track < curScore.ntracks; ++track) {
                   cursor.track = track;
                   cursor.rewind(0);  // set cursor to first chord/rest