129 lines
5.0 KiB
C++
129 lines
5.0 KiB
C++
/* timeline_delegate.cpp
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <ui/qt/models/timeline_delegate.h>
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#include <ui/qt/models/atap_data_model.h>
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#include <ui/qt/utils/color_utils.h>
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#include <QApplication>
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#include <QPainter>
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#include <QTreeView>
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#include <QAbstractProxyModel>
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// XXX We might want to move this to conversation_dialog.cpp.
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// PercentBarDelegate uses a stronger blend value, but its bars are also
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// more of a prominent feature. Make the blend weaker here so that we don't
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// obscure our text.
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static const double bar_blend_ = 0.08;
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TimelineDelegate::TimelineDelegate(QWidget *parent) :
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QStyledItemDelegate(parent)
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{
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_dataRole = Qt::UserRole;
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}
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void TimelineDelegate::setDataRole(int dataRole)
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{
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_dataRole = dataRole;
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}
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void TimelineDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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QStyleOptionViewItem option_vi = option;
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QStyledItemDelegate::initStyleOption(&option_vi, index);
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bool drawBar = false;
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struct timeline_span span_px = index.data(_dataRole).value<struct timeline_span>();
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if (_dataRole == ATapDataModel::TIMELINE_DATA) {
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double span_s = span_px.maxRelTime - span_px.minRelTime;
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QTreeView * tree = qobject_cast<QTreeView *>(parent());
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if (tree) {
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QAbstractProxyModel * proxy = qobject_cast<QAbstractProxyModel *>(tree->model());
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if (proxy && proxy->sourceModel()) {
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QModelIndex indexStart = proxy->mapFromSource(proxy->sourceModel()->index(0, span_px.colStart));
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int colStart = -1;
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int start_px = 0;
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if (indexStart.isValid()) {
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colStart = indexStart.column();
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start_px = tree->columnWidth(colStart);
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}
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int colDuration = -1;
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int column_px = start_px;
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QModelIndex indexDuration = proxy->mapFromSource(proxy->sourceModel()->index(0, span_px.colDuration));
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if (indexDuration.isValid()) {
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colDuration = indexDuration.column();
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column_px += tree->columnWidth(colDuration);
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}
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span_px.start = ((span_px.startTime - span_px.minRelTime) * column_px) / span_s;
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span_px.width = ((span_px.stopTime - span_px.startTime) * column_px) / span_s;
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if (index.column() == colStart) {
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drawBar = true;
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} else if (index.column() == colDuration) {
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drawBar = true;
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span_px.start -= start_px;
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}
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}
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}
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}
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if (!drawBar) {
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QStyledItemDelegate::paint(painter, option, index);
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return;
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}
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// Paint our rect with no text using the current style, then draw our
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// bar and text over it.
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option_vi.text = QString();
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QStyle *style = option_vi.widget ? option_vi.widget->style() : QApplication::style();
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style->drawControl(QStyle::CE_ItemViewItem, &option_vi, painter, option_vi.widget);
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if (QApplication::style()->objectName().contains("vista")) {
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// QWindowsVistaStyle::drawControl does this internally. Unfortunately there
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// doesn't appear to be a more general way to do this.
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option_vi.palette.setColor(QPalette::All, QPalette::HighlightedText,
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option_vi.palette.color(QPalette::Active, QPalette::Text));
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}
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QPalette::ColorGroup cg = option_vi.state & QStyle::State_Enabled
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? QPalette::Normal : QPalette::Disabled;
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QColor text_color = option_vi.palette.color(cg, QPalette::Text);
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QColor bar_color = ColorUtils::alphaBlend(option_vi.palette.windowText(),
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option_vi.palette.window(), bar_blend_);
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if (cg == QPalette::Normal && !(option_vi.state & QStyle::State_Active))
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cg = QPalette::Inactive;
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if (option_vi.state & QStyle::State_Selected) {
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text_color = option_vi.palette.color(cg, QPalette::HighlightedText);
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bar_color = ColorUtils::alphaBlend(option_vi.palette.color(cg, QPalette::Window),
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option_vi.palette.color(cg, QPalette::Highlight),
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bar_blend_);
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}
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painter->save();
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int border_radius = 3; // We use 3 px elsewhere, e.g. filter combos.
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QRect timeline_rect = option.rect;
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timeline_rect.adjust(span_px.start, 1, 0, -1);
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timeline_rect.setWidth(span_px.width);
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painter->setClipRect(option.rect);
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painter->setPen(Qt::NoPen);
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painter->setBrush(bar_color);
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painter->drawRoundedRect(timeline_rect, border_radius, border_radius);
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painter->restore();
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painter->save();
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painter->setPen(text_color);
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painter->drawText(option.rect, Qt::AlignCenter, index.data(Qt::DisplayRole).toString());
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painter->restore();
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}
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