157 lines
5 KiB
C++
157 lines
5 KiB
C++
/*
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* <one line to give the library's name and an idea of what it does.>
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* Copyright 2013 Luca Beltrame <lbeltrame@kde.org>
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License or (at your option) version 3 or any later version
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* accepted by the membership of KDE e.V. (or its successor approved
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* by the membership of KDE e.V.), which shall act as a proxy
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* defined in Section 14 of version 3 of the license.
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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// Own
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#include "danboorupostdelegate.h"
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#include "libdanbooru/danboorupost.h"
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// Qt
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#include <QListView>
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#include <QPainter>
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#include <QDebug>
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#include <QApplication>
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// KDE
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#include <KPushButton>
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namespace Danbooru {
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const int DanbooruPostDelegate::MARGIN = 5;
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DanbooruPostDelegate::DanbooruPostDelegate(QListView* itemView):QStyledItemDelegate(itemView),
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m_itemView(itemView)
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{
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//FIXME: Copied directly from Gwenview without understanding
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#define pm(x) itemView->style()->pixelMetric(QStyle::x)
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m_margin = pm(PM_ToolBarItemMargin);
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m_spacing = pm(PM_ToolBarItemSpacing);
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#undef pm
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const int iconSize = KIconLoader::global()->currentSize(
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KIconLoader::Toolbar
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);
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const QSize sz = itemView->style()->sizeFromContents(
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QStyle::CT_ToolButton, 0,
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QSize(iconSize, iconSize));
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m_buttonSize = qMax(sz.width(), sz.height());
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m_downloadButton = new KPushButton(KIcon("download"),
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QString(), itemView);
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m_viewButton = new KPushButton(KIcon("view-preview"), QString(),
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itemView);
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m_downloadButton->hide();
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m_viewButton->hide();
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m_downloadButton->resize(m_buttonSize, m_buttonSize);
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m_viewButton->resize(m_buttonSize, m_buttonSize);
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}
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void DanbooruPostDelegate::paint(QPainter* painter,
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const QStyleOptionViewItem& option,
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const QModelIndex& index) const
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{
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if (!index.isValid()) {
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return;
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}
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QStyle *style = QApplication::style();
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style->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, 0);
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painter->setRenderHint(QPainter::Antialiasing);
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QPixmap pixmap = index.data(Qt::DecorationRole).value<QPixmap>();
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if (pixmap.isNull()) {
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return;
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}
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// Scaling is unavoidable to keep things in the right dimension
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//TODO: Replace fixed values by configurable values
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QPixmap scaled = pixmap.scaled(256-MARGIN, 256-MARGIN,
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Qt::KeepAspectRatio,
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Qt::SmoothTransformation);
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QRect rect = option.rect;
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// Draw in the center
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QPoint centerCoordinate = rect.center() - QPoint(scaled.width() / 2,
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scaled.height() / 2);
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// Get the bottom coordinate for the buttons, made as center - half
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// of the pixmap width (left) then half of the height minus the button
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// size and margin (because the move() call later on uses the
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// coordinates as TOP coordinates, while we want the bottom of the
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// button to align with the bottom of the pixmap)
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QPoint scaleFactor = QPoint(
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-(scaled.width() / 2) + (MARGIN / 2),
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(scaled.height() / 2) - m_buttonSize + (MARGIN * 1.5)
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);
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QPoint bottomCoordinate = rect.center() + scaleFactor;
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painter->drawPixmap(centerCoordinate, scaled);
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if (option.state & QStyle::State_MouseOver) {
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m_downloadButton->move(centerCoordinate + QPoint(MARGIN / 2, 0));
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m_viewButton->move(bottomCoordinate);
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m_downloadButton->show();
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m_viewButton->show();
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} else if (!hoveredIndex().isValid()) {
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m_downloadButton->hide();
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m_viewButton->hide();
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}
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}
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QSize DanbooruPostDelegate::sizeHint(const QStyleOptionViewItem& option,
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const QModelIndex& index) const
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{
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Q_UNUSED(option)
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Q_UNUSED(index)
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return m_itemView->gridSize();
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}
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QModelIndex DanbooruPostDelegate::hoveredIndex() const
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{
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const QPoint pos = m_itemView->viewport()->mapFromGlobal(QCursor::pos());
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return m_itemView->indexAt(pos);
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}
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} // namespace Danbooru
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