111 lines
3.2 KiB
C++
111 lines
3.2 KiB
C++
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/* This file is part of Clementine.
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Clementine is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "collapsibleinfoheader.h"
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#include <QApplication>
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#include <QMouseEvent>
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#include <QPainter>
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#include <QStyleOption>
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const int CollapsibleInfoHeader::kHeight = 20;
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CollapsibleInfoHeader::CollapsibleInfoHeader(QWidget* parent)
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: QWidget(parent),
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expanded_(true),
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hovering_(false)
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{
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setMinimumHeight(kHeight);
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
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setCursor(QCursor(Qt::PointingHandCursor));
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}
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void CollapsibleInfoHeader::SetTitle(const QString& title) {
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title_ = title;
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update();
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}
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void CollapsibleInfoHeader::SetExpanded(bool expanded) {
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expanded_ = expanded;
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emit ExpandedToggled(expanded);
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if (expanded)
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emit Expanded();
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else
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emit Collapsed();
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}
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void CollapsibleInfoHeader::enterEvent(QEvent*) {
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hovering_ = true;
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update();
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}
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void CollapsibleInfoHeader::leaveEvent(QEvent*) {
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hovering_ = false;
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update();
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}
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void CollapsibleInfoHeader::paintEvent(QPaintEvent* e) {
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QPainter p(this);
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QRect indicator_rect(0, 0, height(), height());
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QRect text_rect(rect());
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text_rect.setLeft(height() + 6);
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// Draw the background
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const QColor bg_color_1(palette().color(QPalette::Highlight).lighter(120));
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const QColor bg_color_2(palette().color(QPalette::Highlight).darker(120));
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const QColor bg_border(palette().color(QPalette::Dark));
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QLinearGradient bg_brush(rect().topLeft(), rect().bottomLeft());
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bg_brush.setColorAt(0.0, bg_color_1);
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bg_brush.setColorAt(0.5, bg_color_1);
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bg_brush.setColorAt(0.5, bg_color_2);
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bg_brush.setColorAt(1.0, bg_color_2);
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p.setPen(Qt::NoPen);
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p.fillRect(rect(), bg_brush);
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p.setPen(bg_border);
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p.drawLine(rect().topLeft(), rect().topRight());
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p.drawLine(rect().bottomLeft(), rect().bottomRight());
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// Draw the expand/collapse indicator
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QStyleOption opt;
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opt.initFrom(this);
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opt.rect = indicator_rect;
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opt.state |= QStyle::State_Children;
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if (expanded_)
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opt.state |= QStyle::State_Open;
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if (hovering_)
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opt.state |= QStyle::State_Active;
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// Have to use the application's style here because using the widget's style
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// will trigger QStyleSheetStyle's recursion guard (I don't know why).
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QApplication::style()->drawPrimitive(QStyle::PE_IndicatorBranch, &opt, &p, this);
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// Draw the title text
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QFont bold_font(font());
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bold_font.setBold(true);
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p.setFont(bold_font);
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p.setPen(palette().color(QPalette::HighlightedText));
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p.drawText(text_rect, Qt::AlignLeft | Qt::AlignVCenter, title_);
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}
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void CollapsibleInfoHeader::mouseReleaseEvent(QMouseEvent* e) {
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SetExpanded(!expanded_);
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}
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