Theme Editor: Added syntax highlighting

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26506 a1c6a512-1295-4272-9138-f99709370657

utils/themeeditor/editorwindow.cpp

@@ -34,6 +34,11 @@ EditorWindow::EditorWindow(QWidget *parent) :
     tree = new ParseTreeModel(ui->code->document()->toPlainText().toAscii());
     ui->parseTree->setModel(tree);
 
+    /* Setting up the syntax highlighter */
+    highlighter = new SkinHighlighter(QColor(0,255,0), QColor(255,0,0),
+                                      QColor(0,0,255), QColor(150,150,150),
+                                      ui->code->document());
+
     /* Connecting the buttons */
     QObject::connect(ui->code, SIGNAL(cursorPositionChanged()),
                      this, SLOT(updateTree()));
@@ -50,7 +55,7 @@ void EditorWindow::updateTree()
 void EditorWindow::updateCode()
 {
     tree->genCode();
-    ui->code->setDocument(new QTextDocument(tree->genCode()));
+    ui->code->document()->setPlainText(tree->genCode());
 }
 
 EditorWindow::~EditorWindow()

utils/themeeditor/editorwindow.h

@@ -25,6 +25,7 @@
 #include <QMainWindow>
 
 #include "parsetreemodel.h"
+#include "skinhighlighter.h"
 
 namespace Ui {
     class EditorWindow;
@@ -43,6 +44,7 @@ private slots:
 private:
     Ui::EditorWindow *ui;
     ParseTreeModel* tree;
+    SkinHighlighter* highlighter;
 
 };
 

utils/themeeditor/editorwindow.ui

@@ -32,7 +32,7 @@
     <item>
      <layout class="QVBoxLayout" name="verticalLayout">
       <item>
-       <widget class="QTextEdit" name="code"/>
+       <widget class="QPlainTextEdit" name="code"/>
       </item>
      </layout>
     </item>
@@ -74,8 +74,8 @@
    <slot>close()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>65</x>
+     <x>-1</x>
-     <y>57</y>
+     <y>-1</y>
     </hint>
     <hint type="destinationlabel">
      <x>299</x>

utils/themeeditor/skinhighlighter.cpp

@@ -0,0 +1,132 @@
+#include "skinhighlighter.h"
+
+SkinHighlighter::SkinHighlighter(QColor comment, QColor tag, QColor conditional,
+                                 QColor escaped, QTextDocument* doc)
+                                     :QSyntaxHighlighter(doc),
+                                     escaped(escaped), tag(tag),
+                                     conditional(conditional), comment(comment)
+{
+
+}
+
+SkinHighlighter::~SkinHighlighter()
+{
+
+}
+
+void SkinHighlighter::highlightBlock(const QString& text)
+{
+    for(int i = 0; i < text.length(); i++)
+    {
+        QChar c = text[i];
+
+        /* Checking for delimiters */
+        if(c == ARGLISTOPENSYM
+           || c == ARGLISTCLOSESYM
+           || c == ARGLISTSEPERATESYM)
+            setFormat(i, 1, tag);
+
+        if(c == ENUMLISTOPENSYM
+           || c == ENUMLISTCLOSESYM
+           || c == ENUMLISTSEPERATESYM)
+            setFormat(i, 1, conditional);
+
+        /* Checking for comments */
+        if(c == COMMENTSYM)
+        {
+            setFormat(i, text.length() - i, comment);
+            return;
+        }
+
+        if(c == TAGSYM)
+        {
+            if(text.length() - i < 2)
+                return;
+
+            if(find_escape_character(text[i + 1].toAscii()))
+            {
+                /* Checking for escaped characters */
+
+                setFormat(i, 2, escaped);
+                i++;
+            }
+            else if(text[i + 1] != CONDITIONSYM)
+            {
+                /* Checking for normal tags */
+
+                char lookup[3];
+                struct tag_info* found = 0;
+
+                /* First checking for a two-character tag name */
+                lookup[2] = '\0';
+
+                if(text.length() - i >= 3)
+                {
+                    lookup[0] = text[i + 1].toAscii();
+                    lookup[1] = text[i + 2].toAscii();
+
+                    found = find_tag(lookup);
+                }
+
+                if(found)
+                {
+                    setFormat(i, 3, tag);
+                    i += 2;
+                }
+                else
+                {
+                    lookup[1] = '\0';
+                    lookup[0] = text[i + 1].toAscii();
+                    found = find_tag(lookup);
+
+                    if(found)
+                    {
+                        setFormat(i, 2, tag);
+                        i++;
+                    }
+                }
+
+            }
+            else if(text[i + 1] == CONDITIONSYM)
+            {
+                /* Checking for conditional tags */
+
+                if(text.length() - i < 3)
+                    return;
+
+                char lookup[3];
+                struct tag_info* found = 0;
+
+                lookup[2] = '\0';
+
+                if(text.length() - i >= 4)
+                {
+                    lookup[0] = text[i + 2].toAscii();
+                    lookup[1] = text[i + 3].toAscii();
+
+                    found = find_tag(lookup);
+                }
+
+                if(found)
+                {
+                    setFormat(i, 4, conditional);
+                    i += 3;
+                }
+                else
+                {
+                    lookup[1] = '\0';
+                    lookup[0] = text[i + 2].toAscii();
+
+                    found = find_tag(lookup);
+
+                    if(found)
+                    {
+                        setFormat(i, 3, conditional);
+                        i += 2;
+                    }
+                }
+
+            }
+        }
+    }
+}

utils/themeeditor/skinhighlighter.h

@@ -0,0 +1,36 @@
+#ifndef SKINHIGHLIGHTER_H
+#define SKINHIGHLIGHTER_H
+
+#include <QSyntaxHighlighter>
+#include <QPlainTextEdit>
+
+#include "tag_table.h"
+#include "symbols.h"
+
+class SkinHighlighter : public QSyntaxHighlighter
+{
+Q_OBJECT
+public:
+    /*
+     * font - The font used for all text
+     * normal - The normal text color
+     * escaped - The color for escaped characters
+     * tag - The color for tags and their delimiters
+     * conditional - The color for conditionals and their delimiters
+     *
+     */
+    SkinHighlighter(QColor comment, QColor tag, QColor conditional,
+                    QColor escaped, QTextDocument* doc);
+    virtual ~SkinHighlighter();
+
+    void highlightBlock(const QString& text);
+
+private:
+    QColor escaped;
+    QColor tag;
+    QColor conditional;
+    QColor comment;
+
+};
+
+#endif // SKINHIGHLIGHTER_H

utils/themeeditor/themeeditor.pro

@@ -4,7 +4,6 @@ OBJECTS_DIR = $$MYBUILDDIR/o
 UI_DIR = $$MYBUILDDIR/ui
 MOC_DIR = $$MYBUILDDIR/moc
 RCC_DIR = $$MYBUILDDIR/rcc
-
 HEADERS += tag_table.h \
     symbols.h \
     skin_parser.h \
@@ -12,7 +11,8 @@ HEADERS += tag_table.h \
     skin_debug.h \
     parsetreemodel.h \
     parsetreenode.h \
-    editorwindow.h
+    editorwindow.h \
+    skinhighlighter.h
 SOURCES += tag_table.c \
     skin_parser.c \
     skin_scan.c \
@@ -20,6 +20,7 @@ SOURCES += tag_table.c \
     main.cpp \
     parsetreemodel.cpp \
     parsetreenode.cpp \
-    editorwindow.cpp
+    editorwindow.cpp \
+    skinhighlighter.cpp
 OTHER_FILES += README
 FORMS += editorwindow.ui