mirror of https://gitee.com/cxasm/notepad--.git
49 lines
1.4 KiB
C++
Executable File
49 lines
1.4 KiB
C++
Executable File
#include "ndstyleditemdelegate.h"
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#include <QTextDocument>
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#include <QApplication>
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#include <QAbstractTextDocumentLayout>
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#include <QPainter>
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#include <QTextEdit>
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NdStyledItemDelegate::NdStyledItemDelegate(QObject *parent)
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: QStyledItemDelegate(parent)
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{
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}
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NdStyledItemDelegate::~NdStyledItemDelegate()
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{
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}
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//重载使可以支持富文本格式的文字
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void NdStyledItemDelegate::paint(QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index) const
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{
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QStyleOptionViewItem viewOption(option);
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initStyleOption(&viewOption, index);
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if (option.state.testFlag(QStyle::State_HasFocus))
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viewOption.state = viewOption.state ^ QStyle::State_HasFocus;
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// ... 省略
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// 设置显示文本为空，使用默认样式
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QStyle *pStyle = viewOption.widget ? viewOption.widget->style() : QApplication::style();
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QTextDocument doc;
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doc.setHtml(viewOption.text);
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viewOption.text.clear();
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pStyle->drawControl(QStyle::CE_ItemViewItem, &viewOption, painter, viewOption.widget);
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QAbstractTextDocumentLayout::PaintContext paintContext;
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QRect textRect = pStyle->subElementRect(QStyle::SE_ItemViewItemText, &viewOption);
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painter->save();
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// 坐标变换，将左上角设置为原点
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painter->translate(textRect.topLeft());
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// 设置HTML绘制区域
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painter->setClipRect(textRect.translated(-textRect.topLeft()));
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doc.documentLayout()->draw(painter, paintContext);
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painter->restore();
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}
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