Merge branch 'cayci-master'

app/src/processing/app/Editor.java

@@ -430,6 +430,8 @@ public class Editor extends JFrame implements RunnerListener {
     textarea.setEditable(!external);
     saveMenuItem.setEnabled(!external);
     saveAsMenuItem.setEnabled(!external);
+    
+    textarea.setDisplayLineNumbers(Preferences.getBoolean("editor.linenumbers"));
 
     TextAreaPainter painter = textarea.getPainter();
     if (external) {

app/src/processing/app/Preferences.java

@@ -177,6 +177,7 @@ public class Preferences {
   JCheckBox exportSeparateBox;
   JCheckBox verboseCompilationBox;
   JCheckBox verboseUploadBox;
+  JCheckBox displayLineNumbersBox;
   JCheckBox verifyUploadBox;
   JCheckBox externalEditorBox;
   JCheckBox memoryOverrideBox;
@@ -382,6 +383,15 @@ public class Preferences {
     box.setBounds(left, top, d.width, d.height);
     top += d.height + GUI_BETWEEN;
 
+	// [ ] Display line numbers
+    
+    displayLineNumbersBox = new JCheckBox(_("Display line numbers"));
+    pain.add(displayLineNumbersBox);
+    d = displayLineNumbersBox.getPreferredSize();
+    displayLineNumbersBox.setBounds(left, top, d.width + 10, d.height);
+    right = Math.max(right, left + d.width);
+    top += d.height + GUI_BETWEEN;
+	
     // [ ] Verify code after upload
     
     verifyUploadBox = new JCheckBox(_("Verify code after upload"));
@@ -571,6 +581,7 @@ public class Preferences {
     // put each of the settings into the table
     setBoolean("build.verbose", verboseCompilationBox.isSelected());
     setBoolean("upload.verbose", verboseUploadBox.isSelected());
+    setBoolean("editor.linenumbers", displayLineNumbersBox.isSelected());
     setBoolean("upload.verify", verifyUploadBox.isSelected());
     
 //    setBoolean("sketchbook.closing_last_window_quits",
@@ -634,6 +645,7 @@ public class Preferences {
     // set all settings entry boxes to their actual status
     verboseCompilationBox.setSelected(getBoolean("build.verbose"));
     verboseUploadBox.setSelected(getBoolean("upload.verbose"));
+    displayLineNumbersBox.setSelected(getBoolean("editor.linenumbers"));
     verifyUploadBox.setSelected(getBoolean("upload.verify"));
 
     //closingLastQuitsBox.

app/src/processing/app/syntax/JEditTextArea.java

@@ -87,6 +87,7 @@ public class JEditTextArea extends JComponent
 
     // Initialize some misc. stuff
     painter = new TextAreaPainter(this,defaults);
+    editorLineNumbers = new TextAreaLineNumbers(this,defaults);
     documentHandler = new DocumentHandler();
     eventListenerList = new EventListenerList();
     caretEvent = new MutableCaretEvent();
@@ -96,6 +97,7 @@ public class JEditTextArea extends JComponent
 
     // Initialize the GUI
     setLayout(new ScrollLayout());
+    add(LEFT, editorLineNumbers);
     add(CENTER, painter);
     add(RIGHT, vertical = new JScrollBar(JScrollBar.VERTICAL));
     add(BOTTOM, horizontal = new JScrollBar(JScrollBar.HORIZONTAL));
@@ -315,6 +317,14 @@ public class JEditTextArea extends JComponent
       horizontal.setUnitIncrement(charWidth);
       horizontal.setBlockIncrement(width / 2);
     }
+    updateLineNumbers();
+  }
+
+  private void updateLineNumbers() {
+    if (editorLineNumbers != null) {
+      editorLineNumbers.updateLineNumbers(getFirstLine() + 1, Math.min(getFirstLine() + getVisibleLines() + 1, getLineCount()));
+      editorLineNumbers.updateWidthForNumDigits(String.valueOf(getLineCount()).length());
+    }
   }
 
   /**
@@ -335,7 +345,7 @@ public class JEditTextArea extends JComponent
     if (firstLine != vertical.getValue()) {
       updateScrollBars();
     }
-    painter.repaint();
+    repaintEditor();
   }
 
   /**
@@ -377,7 +387,7 @@ public class JEditTextArea extends JComponent
     this.horizontalOffset = horizontalOffset;
     if(horizontalOffset != horizontal.getValue())
       updateScrollBars();
-    painter.repaint();
+    repaintEditor();
   }
 
   /**
@@ -407,12 +417,17 @@ public class JEditTextArea extends JComponent
     if(changed)
       {
         updateScrollBars();
-        painter.repaint();
+        repaintEditor();
       }
 
     return changed;
   }
 
+  private void repaintEditor() {
+    painter.repaint();
+    updateLineNumbers();
+  }
+  
   /**
    * Ensures that the caret is visible by scrolling the text area if
    * necessary.
@@ -732,7 +747,7 @@ public class JEditTextArea extends JComponent
 
     select(0, 0);
     updateScrollBars();
-    painter.repaint();
+    repaintEditor();
   }
 
 
@@ -753,7 +768,7 @@ public class JEditTextArea extends JComponent
     select(start, stop);
     updateScrollBars();
     setScrollPosition(scroll);
-    painter.repaint();
+    repaintEditor();
   }
 
 
@@ -790,7 +805,11 @@ public class JEditTextArea extends JComponent
    */
   public final int getLineCount()
   {
-    return document.getDefaultRootElement().getElementCount();
+    if (document != null) {
+      return document.getDefaultRootElement().getElementCount();
+    } else {
+      return 0;
+    }
   }
 
   /**
@@ -1747,6 +1766,7 @@ public class JEditTextArea extends JComponent
   }
 
   // protected members
+  protected static String LEFT = "left";
   protected static String CENTER = "center";
   protected static String RIGHT = "right";
   protected static String BOTTOM = "bottom";
@@ -1755,6 +1775,7 @@ public class JEditTextArea extends JComponent
   protected static Timer caretTimer;
 
   protected TextAreaPainter painter;
+  protected TextAreaLineNumbers editorLineNumbers;
 
   //protected EditPopupMenu popup;
   protected JPopupMenu popup;
@@ -1881,7 +1902,9 @@ public class JEditTextArea extends JComponent
 
     public void addLayoutComponent(String name, Component comp)
     {
-      if(name.equals(CENTER))
+      if(name.equals(LEFT))
+        left = comp;
+      else if(name.equals(CENTER))
         center = comp;
       else if(name.equals(RIGHT))
         right = comp;
@@ -1893,6 +1916,8 @@ public class JEditTextArea extends JComponent
 
     public void removeLayoutComponent(Component comp)
     {
+      if(left == comp)
+        left = null;
       if(center == comp)
         center = null;
       if(right == comp)
@@ -1913,6 +1938,8 @@ public class JEditTextArea extends JComponent
       Dimension centerPref = center.getPreferredSize();
       dim.width += centerPref.width;
       dim.height += centerPref.height;
+      Dimension leftPref = left.getPreferredSize();
+      dim.width += leftPref.width;
       Dimension rightPref = right.getPreferredSize();
       dim.width += rightPref.width;
       Dimension bottomPref = bottom.getPreferredSize();
@@ -1931,6 +1958,8 @@ public class JEditTextArea extends JComponent
       Dimension centerPref = center.getMinimumSize();
       dim.width += centerPref.width;
       dim.height += centerPref.height;
+      Dimension leftPref = left.getMinimumSize();
+      dim.width += leftPref.width;
       Dimension rightPref = right.getMinimumSize();
       dim.width += rightPref.width;
       Dimension bottomPref = bottom.getMinimumSize();
@@ -1950,11 +1979,19 @@ public class JEditTextArea extends JComponent
       int ibottom = insets.bottom;
       int iright = insets.right;
 
+      int leftWidth = left.getSize().width;
       int rightWidth = right.getPreferredSize().width;
       int bottomHeight = bottom.getPreferredSize().height;
-      int centerWidth = size.width - rightWidth - ileft - iright;
+      int centerWidth = size.width - leftWidth - rightWidth - ileft - iright;
       int centerHeight = size.height - bottomHeight - itop - ibottom;
 
+      left.setBounds(ileft,
+                      itop,
+                      leftWidth,
+                      centerHeight);
+      
+      ileft += leftWidth;
+      
       center.setBounds(ileft, // + LEFT_EXTRA,
                        itop,
                        centerWidth, // - LEFT_EXTRA,
@@ -1984,6 +2021,7 @@ public class JEditTextArea extends JComponent
     }
 
     // private members
+    private Component left;
     private Component center;
     private Component right;
     private Component bottom;
@@ -2395,4 +2433,8 @@ public class JEditTextArea extends JComponent
     caretTimer.setInitialDelay(500);
     caretTimer.start();
   }
+
+  public void setDisplayLineNumbers(boolean displayLineNumbers) {
+    editorLineNumbers.setDisplayLineNumbers(displayLineNumbers);
+  }
 }

app/src/processing/app/syntax/TextAreaLineNumbers.java

@@ -0,0 +1,106 @@
+/*
+ * TextAreaLineNumbers.java - Show line numbers for the open file in the editor
+ * Copyright (C) 2013 Cayci Gorlitsky
+ *
+ * You may use and modify this package for any purpose. Redistribution is
+ * permitted, in both source and binary form, provided that this notice
+ * remains intact in all source distributions of this package.
+ */
+
+package processing.app.syntax;
+
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Rectangle;
+
+import javax.swing.border.MatteBorder;
+
+public class TextAreaLineNumbers extends TextAreaPainter {
+  
+  private final int LEFT_INDENT = 6;
+  private final int RIGHT_INDENT = 6;
+  private final int RIGHT_BORDER_WIDTH = 1;
+  private final int PADDING_WIDTH = LEFT_INDENT + RIGHT_INDENT + RIGHT_BORDER_WIDTH;
+  
+  private final int MIN_WIDTH;
+  private final int DIGIT_WIDTH;
+  private final int MIN_NUM_DIGITS = 2;
+  
+  private int currStartNum = 0;
+  private int currEndNum = 0;
+  private int currNumDigits = MIN_NUM_DIGITS;
+  
+  
+  
+  public TextAreaLineNumbers(JEditTextArea textArea, TextAreaDefaults defaults) {
+    super(textArea, defaults);
+    DIGIT_WIDTH = getFontMetrics(getFont()).stringWidth("0");
+    MIN_WIDTH = DIGIT_WIDTH * MIN_NUM_DIGITS + PADDING_WIDTH;
+    setEnabled(false);
+    setBorder(new MatteBorder(0, 0, 0, RIGHT_BORDER_WIDTH, new Color(240, 240, 240)));
+  }
+  
+  public void updateLineNumbers(int startNum, int endNum) {
+    if (currStartNum == startNum && currEndNum == endNum) {
+      return;
+    }
+    currStartNum = startNum;
+    currEndNum = endNum;
+    
+    invalidate();
+    repaint();
+  }
+  
+  @Override
+  public void paint(Graphics gfx) {
+    super.paint(gfx);
+    getBorder().paintBorder(this, gfx, 0, 0, getSize().width, getSize().height);
+  }
+
+  @Override
+  protected void paintLine(Graphics gfx, TokenMarker tokenMarker,
+                           int line, int x)
+  {
+    currentLineIndex = line;
+    gfx.setFont(getFont());
+    gfx.setColor(Color.GRAY);
+    int y = textArea.lineToY(line);
+    int startX = getBounds().x + getBounds().width;
+    if (line >= 0 && line < textArea.getLineCount()) {
+      String lineNumberString = String.valueOf(line+1);
+      int lineStartX = startX - RIGHT_BORDER_WIDTH - RIGHT_INDENT - fm.stringWidth(lineNumberString);
+      gfx.drawString(lineNumberString,lineStartX,y + fm.getHeight());
+    }
+  }
+  
+  public void updateWidthForNumDigits(int numDigits) {
+    if (currNumDigits == numDigits) {
+      return;
+    }
+    currNumDigits = numDigits;
+    
+    if (isVisible()) {
+      updateBounds();
+      invalidate();
+      repaint();
+    }
+  }
+
+  public void setDisplayLineNumbers(boolean displayLineNumbers) {
+    setVisible(displayLineNumbers);
+    if (displayLineNumbers) {
+      updateBounds();
+    } else {
+      setBounds(new Rectangle(0, getHeight()));
+    }
+    invalidate();
+    repaint();
+  }
+  
+  private void updateBounds() {
+    if (isVisible()) {
+      setBounds(new Rectangle(Math.max(MIN_WIDTH, DIGIT_WIDTH * currNumDigits + PADDING_WIDTH), getHeight()));
+      textArea.validate();
+    }
+  }
+}

build/shared/lib/preferences.txt

@@ -104,6 +104,9 @@ editor.caret.blink=true
 # area that's not in use by the text (replaced with tildes)
 editor.invalid=false
 
+# show line numbers in editor
+editor.linenumbers = false
+
 # enable ctrl-ins, shift-ins, shift-delete for cut/copy/paste
 # on windows and linux, but disable on the mac
 editor.keys.alternative_cut_copy_paste = true