PrismLauncher/launcher/ui/widgets/VersionListView.cpp
Sefa Eyeoglu 91ba4cf75e
chore: reformat
Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>
2023-08-14 18:16:53 +02:00

169 lines
4.8 KiB
C++

// SPDX-License-Identifier: GPL-3.0-only
/*
* Prism Launcher - Minecraft Launcher
* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
* Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2013-2021 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "VersionListView.h"
#include <QApplication>
#include <QDrag>
#include <QHeaderView>
#include <QMouseEvent>
#include <QPainter>
VersionListView::VersionListView(QWidget* parent) : QTreeView(parent)
{
m_emptyString = tr("No versions are currently available.");
}
void VersionListView::rowsInserted(const QModelIndex& parent, int start, int end)
{
m_itemCount += end - start + 1;
updateEmptyViewPort();
QTreeView::rowsInserted(parent, start, end);
}
void VersionListView::rowsAboutToBeRemoved(const QModelIndex& parent, int start, int end)
{
m_itemCount -= end - start + 1;
updateEmptyViewPort();
QTreeView::rowsInserted(parent, start, end);
}
void VersionListView::setModel(QAbstractItemModel* model)
{
m_itemCount = model->rowCount();
updateEmptyViewPort();
QTreeView::setModel(model);
}
void VersionListView::reset()
{
if (model()) {
m_itemCount = model()->rowCount();
} else {
m_itemCount = 0;
}
updateEmptyViewPort();
QTreeView::reset();
}
void VersionListView::setEmptyString(QString emptyString)
{
m_emptyString = emptyString;
updateEmptyViewPort();
}
void VersionListView::setEmptyErrorString(QString emptyErrorString)
{
m_emptyErrorString = emptyErrorString;
updateEmptyViewPort();
}
void VersionListView::setEmptyMode(VersionListView::EmptyMode mode)
{
m_emptyMode = mode;
updateEmptyViewPort();
}
void VersionListView::updateEmptyViewPort()
{
#ifndef QT_NO_ACCESSIBILITY
setAccessibleDescription(currentEmptyString());
#endif /* !QT_NO_ACCESSIBILITY */
if (!m_itemCount) {
viewport()->update();
}
}
void VersionListView::paintEvent(QPaintEvent* event)
{
if (m_itemCount) {
QTreeView::paintEvent(event);
} else {
paintInfoLabel(event);
}
}
QString VersionListView::currentEmptyString() const
{
switch (m_emptyMode) {
default:
case VersionListView::String:
return m_emptyString;
case VersionListView::ErrorString:
return m_emptyErrorString;
}
}
void VersionListView::paintInfoLabel(QPaintEvent* event) const
{
QString emptyString = currentEmptyString();
// calculate the rect for the overlay
QPainter painter(viewport());
painter.setRenderHint(QPainter::Antialiasing, true);
QFont font("sans", 20);
font.setBold(true);
QRect bounds = viewport()->geometry();
bounds.moveTop(0);
auto innerBounds = bounds;
innerBounds.adjust(10, 10, -10, -10);
QColor background = QApplication::palette().color(QPalette::WindowText);
QColor foreground = QApplication::palette().color(QPalette::Base);
foreground.setAlpha(190);
painter.setFont(font);
auto fontMetrics = painter.fontMetrics();
auto textRect = fontMetrics.boundingRect(innerBounds, Qt::AlignHCenter | Qt::TextWordWrap, emptyString);
textRect.moveCenter(bounds.center());
auto wrapRect = textRect;
wrapRect.adjust(-10, -10, 10, 10);
// check if we are allowed to draw in our area
if (!event->rect().intersects(wrapRect)) {
return;
}
painter.setBrush(QBrush(background));
painter.setPen(foreground);
painter.drawRoundedRect(wrapRect, 5.0, 5.0);
painter.setPen(foreground);
painter.setFont(font);
painter.drawText(textRect, Qt::AlignHCenter | Qt::TextWordWrap, emptyString);
}