utils/themeeditor/codeeditor.h

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  35
  36 #ifndef CODEEDITOR_H
  37 #define CODEEDITOR_H
  38
  39 #include <QPlainTextEdit>
  40 #include <QObject>
  41
  42 QT_BEGIN_NAMESPACE
  43 class QPaintEvent;
  44 class QResizeEvent;
  45 class QSize;
  46 class QWidget;
  47 QT_END_NAMESPACE
  48
  49 class LineNumberArea;
  50
  51 //![codeeditordefinition]
  52
  53 class CodeEditor : public QPlainTextEdit
  54 {
  55     Q_OBJECT
  56
  57 public:
  58     CodeEditor(QWidget *parent = 0);
  59
  60     void lineNumberAreaPaintEvent(QPaintEvent *event);
  61     int lineNumberAreaWidth();
  62
  63 protected:
  64     void resizeEvent(QResizeEvent *event);
  65
  66 private slots:
  67     void updateLineNumberAreaWidth(int newBlockCount);
  68     void updateLineNumberArea(const QRect &, int);
  69
  70 private:
  71     QWidget *lineNumberArea;
  72 };
  73
  74 //![codeeditordefinition]
  75 //![extraarea]
  76
  77 class LineNumberArea : public QWidget
  78 {
  79 public:
  80     LineNumberArea(CodeEditor *editor) : QWidget(editor) {
  81         codeEditor = editor;
  82     }
  83
  84     QSize sizeHint() const {
  85         return QSize(codeEditor->lineNumberAreaWidth(), 0);
  86     }
  87
  88 protected:
  89     void paintEvent(QPaintEvent *event) {
  90         codeEditor->lineNumberAreaPaintEvent(event);
  91     }
  92
  93 private:
  94     CodeEditor *codeEditor;
  95 };
  96
  97 //![extraarea]
  98
  99 #endif