145 lines
3.9 KiB
C++
145 lines
3.9 KiB
C++
#include "LogView.h"
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#include <QTextBlock>
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#include <QScrollBar>
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LogView::LogView(QWidget* parent) : QPlainTextEdit(parent)
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{
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setWordWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
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m_defaultFormat = new QTextCharFormat(currentCharFormat());
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}
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LogView::~LogView()
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{
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delete m_defaultFormat;
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}
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void LogView::setWordWrap(bool wrapping)
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{
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if(wrapping)
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{
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setLineWrapMode(QPlainTextEdit::WidgetWidth);
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}
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else
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{
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setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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setLineWrapMode(QPlainTextEdit::NoWrap);
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}
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}
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void LogView::setModel(QAbstractItemModel* model)
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{
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if(m_model)
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{
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disconnect(m_model, &QAbstractItemModel::modelReset, this, &LogView::repopulate);
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disconnect(m_model, &QAbstractItemModel::rowsInserted, this, &LogView::rowsInserted);
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disconnect(m_model, &QAbstractItemModel::rowsAboutToBeInserted, this, &LogView::rowsAboutToBeInserted);
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disconnect(m_model, &QAbstractItemModel::rowsRemoved, this, &LogView::rowsRemoved);
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}
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m_model = model;
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if(m_model)
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{
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connect(m_model, &QAbstractItemModel::modelReset, this, &LogView::repopulate);
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connect(m_model, &QAbstractItemModel::rowsInserted, this, &LogView::rowsInserted);
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connect(m_model, &QAbstractItemModel::rowsAboutToBeInserted, this, &LogView::rowsAboutToBeInserted);
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connect(m_model, &QAbstractItemModel::rowsRemoved, this, &LogView::rowsRemoved);
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connect(m_model, &QAbstractItemModel::destroyed, this, &LogView::modelDestroyed);
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}
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repopulate();
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}
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QAbstractItemModel * LogView::model() const
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{
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return m_model;
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}
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void LogView::modelDestroyed(QObject* model)
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{
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if(m_model == model)
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{
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setModel(nullptr);
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}
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}
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void LogView::repopulate()
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{
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auto doc = document();
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doc->clear();
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if(!m_model)
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{
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return;
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}
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rowsInserted(QModelIndex(), 0, m_model->rowCount() - 1);
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}
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void LogView::rowsAboutToBeInserted(const QModelIndex& parent, int first, int last)
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{
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Q_UNUSED(parent)
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Q_UNUSED(first)
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Q_UNUSED(last)
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QScrollBar *bar = verticalScrollBar();
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int max_bar = bar->maximum();
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int val_bar = bar->value();
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if (m_scroll)
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{
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m_scroll = (max_bar - val_bar) <= 1;
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}
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else
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{
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m_scroll = val_bar == max_bar;
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}
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}
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void LogView::rowsInserted(const QModelIndex& parent, int first, int last)
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{
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for(int i = first; i <= last; i++)
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{
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auto idx = m_model->index(i, 0, parent);
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auto text = m_model->data(idx, Qt::DisplayRole).toString();
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QTextCharFormat format(*m_defaultFormat);
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auto font = m_model->data(idx, Qt::FontRole);
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if(font.isValid())
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{
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format.setFont(font.value<QFont>());
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}
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auto fg = m_model->data(idx, Qt::TextColorRole);
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if(fg.isValid())
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{
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format.setForeground(fg.value<QColor>());
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}
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auto bg = m_model->data(idx, Qt::BackgroundRole);
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if(bg.isValid())
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{
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format.setBackground(bg.value<QColor>());
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}
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auto workCursor = textCursor();
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workCursor.movePosition(QTextCursor::End);
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workCursor.insertText(text, format);
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workCursor.insertBlock();
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}
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if(m_scroll && !m_scrolling)
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{
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m_scrolling = true;
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QMetaObject::invokeMethod( this, "scrollToBottom", Qt::QueuedConnection);
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}
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}
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void LogView::rowsRemoved(const QModelIndex& parent, int first, int last)
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{
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// TODO: some day... maybe
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Q_UNUSED(parent)
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Q_UNUSED(first)
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Q_UNUSED(last)
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}
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void LogView::scrollToBottom()
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{
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m_scrolling = false;
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verticalScrollBar()->setSliderPosition(verticalScrollBar()->maximum());
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}
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void LogView::findNext(const QString& what, bool reverse)
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{
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find(what, reverse ? QTextDocument::FindFlag::FindBackward : QTextDocument::FindFlag(0));
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}
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