108 lines
3.9 KiB
C++
108 lines
3.9 KiB
C++
/* percent_bar_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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "percent_bar_delegate.h"
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#include "color_utils.h"
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#include <QApplication>
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#include <QPainter>
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static const int bar_em_width_ = 8;
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static const double bar_blend_ = 0.15;
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void PercentBarDelegate::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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// 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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QStyledItemDelegate::paint(painter, option, QModelIndex());
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bool ok = false;
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double value = index.data(Qt::UserRole).toDouble(&ok);
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if (!ok || !index.data(Qt::DisplayRole).toString().isEmpty()) {
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// We don't have a valid value or the item has visible text.
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return;
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}
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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 pct_rect = option.rect;
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pct_rect.adjust(1, 1, -1, -1);
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pct_rect.setWidth(((pct_rect.width() * value) / 100.0) + 0.5);
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painter->setPen(Qt::NoPen);
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painter->setBrush(bar_color);
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painter->drawRoundedRect(pct_rect, border_radius, border_radius);
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painter->restore();
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painter->save();
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QString pct_str = QString::number(value, 'f', 1);
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painter->setPen(text_color);
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painter->drawText(option.rect, Qt::AlignCenter, pct_str);
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painter->restore();
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}
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QSize PercentBarDelegate::sizeHint(const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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return QSize(option.fontMetrics.height() * bar_em_width_,
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QStyledItemDelegate::sizeHint(option, index).height());
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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