84 lines
1.7 KiB
C++
Executable File
84 lines
1.7 KiB
C++
Executable File
#include "topic_previewer.h"
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#include <QDebug>
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#include <QDrag>
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#include <QMimeData>
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#include <QMouseEvent>
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#include <QPainter>
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namespace TopicEditorBase
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{
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TopicPreviewer::TopicPreviewer(QWidget *parent)
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: QWidget(parent)
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{
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setVisible(false);
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}
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TopicPreviewer::~TopicPreviewer()
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{}
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void TopicPreviewer::setTopicData(const TopicData &data)
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{
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m_topicData = data;
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if (m_topicData.state)
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return;
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}
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void TopicPreviewer::mousePressEvent(QMouseEvent *event)
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{
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if (m_topicData.topicType == TopicType::Invalid || m_topicData.duration < 1 || event->buttons() != Qt::LeftButton)
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return;
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m_topicData.state = true;
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QByteArray byteArray;
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QDataStream dataStream(&byteArray, QIODevice::WriteOnly);
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dataStream << m_topicData;
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m_topicData.state = false;
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QMimeData *mimeData = new QMimeData;
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mimeData->setData(TopicData::mime, byteArray);
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QDrag *drag = new QDrag(this);
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drag->setDragCursor(QPixmap(), Qt::CopyAction);
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drag->setMimeData(mimeData);
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emit startDragMe();
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if (drag->exec(Qt::CopyAction) == Qt::CopyAction)
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emit deleteMe();
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emit stopDragMe();
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}
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void TopicPreviewer::paintEvent(QPaintEvent *event)
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{
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QWidget::paintEvent(event);
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if (m_topicData.topicType == TopicType::Invalid)
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return;
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QPainter painter(this);
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painter.setClipping(true);
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painter.setClipRect(rect(), Qt::ReplaceClip);
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painter.setPen(isEnabled() ? Qt::black : Qt::lightGray);
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painter.setBrush(QBrush(topicTypeColor(m_topicData.topicType)));
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painter.drawRect(rect().adjusted(0, 0, -1, -1));
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painter.drawText(rect().adjusted(3, 16, -1, -1), m_topicData.description);
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if (!isEnabled())
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{
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painter.setBrush(QBrush(QColor(255, 255, 255, 204)));
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painter.drawRect(rect().adjusted(0, 0, -1, -1));
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}
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}
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}
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