115 lines
2.9 KiB
C++
115 lines
2.9 KiB
C++
#ifndef FLOWLINETEXTBROWSER_H
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#define FLOWLINETEXTBROWSER_H
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#include "JumpLineManager.h"
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#include <QTextBrowser>
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#include <QObject>
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#include <QResizeEvent>
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#include <QDebug>
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#include <QPaintEvent>
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#include <QResizeEvent>
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#include <QSize>
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#include <QWidget>
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#include <QScrollEvent>
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#include <QToolTip>
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class FlowLineTextBrowser : public QTextBrowser
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{
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class LineArea;
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public:
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FlowLineTextBrowser(QWidget *parent = Q_NULLPTR);
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void lineAreaPaintEvent(QPaintEvent *event);
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int lineAreaWidth();
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void setJumpLines(JumpLines *jl);
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void proxyWheelEvent(QWheelEvent *ev) { if (ev) { wheelEvent(ev); } }
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protected:
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void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
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void resizeEvent(QResizeEvent *event) Q_DECL_OVERRIDE;
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int getFirstVisibleBlock(QTextBlock *firstBlock) const;
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int getChannelOffset(int channel);
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QRect getBlockGeometry(QTextBlock block) const;
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bool isBlockVisible(QTextBlock block) const;
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void showEvent(QShowEvent *) Q_DECL_OVERRIDE;
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private slots:
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void updateLineAreaWidth();
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void updateLineArea(const QRect &, int);
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public slots:
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void setLineAreaVisible(bool visible);
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private:
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FlowLineTextBrowser::LineArea *m_lineArea;
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JumpLines *m_jl;
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class LineArea : public QWidget
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{
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public:
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LineArea(FlowLineTextBrowser *browser) : QWidget(browser)
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{
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setMouseTracking(true);
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m_browser = browser;
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}
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void setJumpLines(JumpLines *jl) { m_jl = jl; }
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QSize sizeHint() const Q_DECL_OVERRIDE
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{
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return QSize(m_browser->lineAreaWidth(),0);
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}
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protected:
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void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE
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{
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m_browser->lineAreaPaintEvent(event);
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}
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void wheelEvent(QWheelEvent *ev) Q_DECL_OVERRIDE { m_browser->proxyWheelEvent(ev); }
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bool event(QEvent *event) Q_DECL_OVERRIDE
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{
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if (event->type() == QEvent::ToolTip) {
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QHelpEvent *helpEvent = static_cast<QHelpEvent *>(event);
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int index = getChannelForXPos(helpEvent->pos().x());
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if (index != -1) {
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QToolTip::showText(helpEvent->globalPos(), QString("Channel %1").arg(index));
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} else {
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QToolTip::hideText();
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event->ignore();
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}
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return true;
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}
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return QWidget::event(event);
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}
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int getChannelForXPos(int xpos)
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{
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for (int idx = 0; idx < m_browser->m_jl->m_maxChannel; idx++)
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{
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int channeloffset = m_browser->getChannelOffset(idx);
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if (abs(channeloffset - xpos) < 4)
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{
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return idx;
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}
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}
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return -1;
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}
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private:
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FlowLineTextBrowser *m_browser;
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JumpLines *m_jl;
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};
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};
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#endif // FLOWLINETEXTBROWSER_H
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