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