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/* percent_bar_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/percent_bar_delegate.h>
#include <ui/qt/utils/color_utils.h>
#include <QApplication>
#include <QPainter>
static const int bar_em_width_ = 8;
static const double bar_blend_ = 0.15;
void PercentBarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
QStyleOptionViewItem option_vi = option;
QStyledItemDelegate::initStyleOption(&option_vi, index);
// Paint our rect with no text using the current style, then draw our
// bar and text over it.
QStyledItemDelegate::paint(painter, option, index);
bool ok = false;
double value = index.data(Qt::UserRole).toDouble(&ok);
if (!ok || !index.data(Qt::DisplayRole).toString().isEmpty()) {
// We don't have a valid value or the item has visible text.
return;
}
// If our value is out range our caller has a bug. Clamp the graph and
// Print the numeric value so that the bug is obvious.
QString pct_str = QString::number(value, 'f', 1);
if (value < 0) {
value = 0;
}
if (value > 100.0) {
value = 100.0;
}
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 pct_rect = option.rect;
pct_rect.adjust(1, 1, -1, -1);
pct_rect.setWidth(((pct_rect.width() * value) / 100.0) + 0.5);
painter->setPen(Qt::NoPen);
painter->setBrush(bar_color);
painter->drawRoundedRect(pct_rect, border_radius, border_radius);
painter->restore();
painter->save();
painter->setPen(text_color);
painter->drawText(option.rect, Qt::AlignCenter, pct_str);
painter->restore();
}
QSize PercentBarDelegate::sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
return QSize(option.fontMetrics.height() * bar_em_width_,
QStyledItemDelegate::sizeHint(option, index).height());
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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