add QCodeEditor

external/QCodeEditor/src/internal/QFramedTextAttribute.cpp

@@ -0,0 +1,112 @@
+// QCodeEditor
+#include <QFramedTextAttribute>
+#include <QSyntaxStyle>
+
+// Qt
+#include <QFontMetrics>
+#include <QPainter>
+#include <QDebug>
+#include <QTextBlock>
+
+int QFramedTextAttribute::type()
+{
+    return QTextFormat::UserFormat + 1;
+}
+
+QFramedTextAttribute::QFramedTextAttribute(QObject* parent) :
+    QObject(parent),
+    m_style(nullptr)
+{
+
+}
+
+void QFramedTextAttribute::setSyntaxStyle(QSyntaxStyle* style)
+{
+    m_style = style;
+}
+
+QSyntaxStyle* QFramedTextAttribute::syntaxStyle() const
+{
+    return m_style;
+}
+
+QSizeF QFramedTextAttribute::intrinsicSize(QTextDocument*, int, const QTextFormat&)
+{
+    return {0, 0};
+}
+
+void QFramedTextAttribute::drawObject(QPainter* painter,
+                                      const QRectF& rect,
+                                      QTextDocument*,
+                                      int,
+                                      const QTextFormat& format)
+{
+    // Casting
+    auto textCharFormat = reinterpret_cast<const QTextCharFormat&>(format);
+
+    // Getting font data
+    auto font = textCharFormat.font();
+    QFontMetrics metrics(font);
+
+    // Getting required size
+    auto string = format.property(FramedString).toString();
+    auto stringSize = metrics.boundingRect(string).size();
+
+    // Creating frame rect
+    QRectF drawRect(rect.topLeft(), stringSize);
+    drawRect.moveTop(rect.top() - stringSize.height());
+    drawRect.adjust(0, 4, 0, 4);
+
+    // Drawing
+    painter->setPen(m_style->getFormat("Occurrences").background().color());
+    painter->setRenderHint(QPainter::Antialiasing);
+    painter->drawRoundedRect(drawRect, 4, 4);
+}
+
+void QFramedTextAttribute::frame(QTextCursor cursor)
+{
+    auto text = cursor.document()->findBlockByNumber(cursor.blockNumber()).text();
+
+    QTextCharFormat format;
+    format.setObjectType(type());
+    format.setProperty(FramedString, cursor.selectedText());
+
+    if (cursor.selectionEnd() > cursor.selectionStart())
+    {
+        cursor.setPosition(cursor.selectionStart());
+    }
+    else
+    {
+        cursor.setPosition(cursor.selectionEnd());
+    }
+
+    cursor.insertText(
+        QString(QChar::ObjectReplacementCharacter),
+        format
+    );
+}
+
+void QFramedTextAttribute::clear(QTextCursor cursor)
+{
+    auto doc = cursor.document();
+
+    for (auto blockIndex = 0;
+         blockIndex < doc->blockCount();
+         ++blockIndex)
+    {
+        auto block = doc->findBlockByNumber(blockIndex);
+
+        auto formats = block.textFormats();
+        int offset = 0;
+
+        for (auto& format : formats)
+        {
+            if (format.format.objectType() == type())
+            {
+                cursor.setPosition(block.position() + format.start - offset);
+                cursor.deleteChar();
+                ++offset;
+            }
+        }
+    }
+}