From e66822c6ee56cc12854628e6b1448bdc635fdb82 Mon Sep 17 00:00:00 2001
From: Thijs Wenker <me@thoys.nl>
Date: Wed, 16 Apr 2014 00:55:06 +0200
Subject: [PATCH] ScriptEditor: Syntax highlighting update

---
 interface/src/ScriptHighlighting.cpp    | 57 ++++++++++++++++++++-
 interface/src/ScriptHighlighting.h      | 20 +++++++-
 interface/src/ui/ScriptEditorWidget.cpp |  5 +-
 interface/ui/ScriptEditorWidget.ui      | 66 ++++++++++++++++++++++---
 4 files changed, 137 insertions(+), 11 deletions(-)

diff --git a/interface/src/ScriptHighlighting.cpp b/interface/src/ScriptHighlighting.cpp
index 15505ac49a..119926742c 100644
--- a/interface/src/ScriptHighlighting.cpp
+++ b/interface/src/ScriptHighlighting.cpp
@@ -11,8 +11,61 @@
 
 #include "ScriptHighlighting.h"
 
-ScriptHighlighting::ScriptHighlighting(QObject* parent) :
+ScriptHighlighting::ScriptHighlighting(QTextDocument* parent) :
     QSyntaxHighlighter(parent)
 {
+    keywordRegex = QRegExp("\\b(break|case|catch|continue|debugger|default|delete|do|else|finally|for|function|if|in|instanceof|new|return|switch|this|throw|try|typeof|var|void|while|with)\\b");
+    qoutedTextRegex = QRegExp("\".*\"");
+    multiLineCommentBegin = QRegExp("/\\*");
+    multiLineCommentEnd = QRegExp("\\*/");
+    numberRegex = QRegExp("[0-9]+(\\.[0-9]+){0,1}");
+}
 
-}
\ No newline at end of file
+void ScriptHighlighting::highlightBlock(const QString &text) {
+    this->highlightKeywords(text);
+    this->formatComments(text);	
+    this->formatQoutedText(text);
+    this->formatNumbers(text);
+}
+
+void ScriptHighlighting::highlightKeywords(const QString &text) {
+    int index = keywordRegex.indexIn(text);
+    while (index >= 0) {
+        int length = keywordRegex.matchedLength();
+        setFormat(index, length, Qt::blue);
+        index = keywordRegex.indexIn(text, index + length);
+    }
+}
+
+void ScriptHighlighting::formatComments(const QString &text) {
+
+    setCurrentBlockState(BlockStateClean);
+
+    int start = (previousBlockState() != BlockStateInMultiComment) ? text.indexOf(multiLineCommentBegin) : 0;
+
+    while (start > -1) {
+        int end = text.indexOf(multiLineCommentEnd, start);
+        int length = (end == -1 ? text.length() : (end + multiLineCommentEnd.matchedLength())) - start;
+        setFormat(start, length, Qt::lightGray);
+        start = text.indexOf(multiLineCommentBegin, start + length);
+        if (end == -1) setCurrentBlockState(BlockStateInMultiComment);
+    }
+}
+
+void ScriptHighlighting::formatQoutedText(const QString &text){
+    int index = qoutedTextRegex.indexIn(text);
+    while (index >= 0) {
+        int length = qoutedTextRegex.matchedLength();
+        setFormat(index, length, Qt::red);
+        index = qoutedTextRegex.indexIn(text, index + length);
+    }
+}
+
+void ScriptHighlighting::formatNumbers(const QString &text){
+    int index = numberRegex.indexIn(text);
+    while (index >= 0) {
+        int length = numberRegex.matchedLength();
+        setFormat(index, length, Qt::green);
+        index = numberRegex.indexIn(text, index + length);
+    }
+}
diff --git a/interface/src/ScriptHighlighting.h b/interface/src/ScriptHighlighting.h
index f2bd97930e..b9567cb06a 100644
--- a/interface/src/ScriptHighlighting.h
+++ b/interface/src/ScriptHighlighting.h
@@ -18,8 +18,26 @@ class ScriptHighlighting : public QSyntaxHighlighter {
     Q_OBJECT
 
 public:
-    ScriptHighlighting(QObject* parent = 0);
+    ScriptHighlighting(QTextDocument* parent = 0);
 
+    enum BlockState {
+        BlockStateClean,
+        BlockStateInMultiComment
+    };
+
+protected:
+    void highlightBlock(const QString &text);
+    void highlightKeywords(const QString &text);
+    void formatComments(const QString &text);
+    void formatQoutedText(const QString &text);
+    void formatNumbers(const QString &text);
+
+private:
+    QRegExp keywordRegex;
+    QRegExp qoutedTextRegex;
+    QRegExp multiLineCommentBegin;
+    QRegExp multiLineCommentEnd;
+    QRegExp numberRegex;
 };
 
 #endif // hifi_ScriptHighlighting_h
diff --git a/interface/src/ui/ScriptEditorWidget.cpp b/interface/src/ui/ScriptEditorWidget.cpp
index 4adf01a28a..618e405448 100644
--- a/interface/src/ui/ScriptEditorWidget.cpp
+++ b/interface/src/ui/ScriptEditorWidget.cpp
@@ -20,6 +20,7 @@
 #include <QWidget>
 
 #include "Application.h"
+#include "ScriptHighlighting.h"
 #include "ui_scriptEditorWidget.h"
 
 #include "ScriptEditorWidget.h"
@@ -31,7 +32,9 @@ ScriptEditorWidget::ScriptEditorWidget() :
 
     // remove the title bar (see the Qt docs on setTitleBarWidget)
     setTitleBarWidget(new QWidget());
-    //QSyntaxHighlighter* highlighter = new QSyntaxHighlighter();
+    QFontMetrics fm(this->ui->scriptEdit->font());
+    this->ui->scriptEdit->setTabStopWidth(fm.width('0') * 4);
+    ScriptHighlighting* highlighting = new ScriptHighlighting(this->ui->scriptEdit->document());
 }
 
 ScriptEditorWidget::~ScriptEditorWidget() {
diff --git a/interface/ui/ScriptEditorWidget.ui b/interface/ui/ScriptEditorWidget.ui
index 82398d587c..5878f26c69 100644
--- a/interface/ui/ScriptEditorWidget.ui
+++ b/interface/ui/ScriptEditorWidget.ui
@@ -52,7 +52,7 @@
      <number>0</number>
     </property>
     <item>
-     <widget class="QTextEdit" name="textEdit">
+     <widget class="QTextEdit" name="scriptEdit">
       <property name="font">
        <font>
         <family>Courier</family>
@@ -68,22 +68,74 @@
      </widget>
     </item>
     <item>
-     <widget class="QLabel" name="label">
-      <property name="text">
-       <string>Debug Log:</string>
+     <layout class="QHBoxLayout" name="horizontalLayout">
+      <property name="spacing">
+       <number>0</number>
       </property>
-     </widget>
+      <property name="leftMargin">
+       <number>0</number>
+      </property>
+      <property name="topMargin">
+       <number>0</number>
+      </property>
+      <item>
+       <widget class="QLabel" name="label">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="text">
+         <string>Debug Log:</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QPushButton" name="clearButton">
+        <property name="text">
+         <string>Clear</string>
+        </property>
+        <property name="iconSize">
+         <size>
+          <width>16</width>
+          <height>16</height>
+         </size>
+        </property>
+       </widget>
+      </item>
+     </layout>
     </item>
     <item>
-     <widget class="QPlainTextEdit" name="plainTextEdit">
+     <widget class="QPlainTextEdit" name="debugText">
       <property name="styleSheet">
        <string notr="true">font: 8pt &quot;Courier&quot;;</string>
       </property>
+      <property name="readOnly">
+       <bool>true</bool>
+      </property>
      </widget>
     </item>
    </layout>
   </widget>
  </widget>
  <resources/>
- <connections/>
+ <connections>
+  <connection>
+   <sender>clearButton</sender>
+   <signal>clicked()</signal>
+   <receiver>debugText</receiver>
+   <slot>clear()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>663</x>
+     <y>447</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>350</x>
+     <y>501</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
 </ui>