PrismLauncher/launcher/ui/instanceview/VisualGroup.cpp
Tayou 81c0a1c4bd
antialiasing for all painting, make hitbox fullwidth
Signed-off-by: Tayou <tayou@gmx.net>
2023-07-02 14:01:56 +02:00

249 lines
7.7 KiB
C++

// SPDX-License-Identifier: GPL-3.0-only
/*
* Prism Launcher - Minecraft Launcher
* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
* Copyright (C) 2023 Tayou <git@tayou.org>
*
* 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 "VisualGroup.h"
#include <QApplication>
#include <QDebug>
#include <QModelIndex>
#include <QPainter>
#include <QtMath>
#include <utility>
#include "InstanceView.h"
VisualGroup::VisualGroup(QString text, InstanceView* view) : view(view), text(std::move(text)), collapsed(false) {}
VisualGroup::VisualGroup(const VisualGroup* other) : view(other->view), text(other->text), collapsed(other->collapsed) {}
void VisualGroup::update()
{
auto temp_items = items();
auto itemsPerRow = view->itemsPerRow();
int numRows = qMax(1, qCeil((qreal)temp_items.size() / (qreal)itemsPerRow));
rows = QVector<VisualRow>(numRows);
int maxRowHeight = 0;
int positionInRow = 0;
int currentRow = 0;
int offsetFromTop = 0;
for (auto item : temp_items) {
if (positionInRow == itemsPerRow) {
rows[currentRow].height = maxRowHeight;
rows[currentRow].top = offsetFromTop;
currentRow++;
offsetFromTop += maxRowHeight + 5;
positionInRow = 0;
maxRowHeight = 0;
}
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
QStyleOptionViewItem viewItemOption;
view->initViewItemOption(&viewItemOption);
#else
QStyleOptionViewItem viewItemOption = view->viewOptions();
#endif
auto itemHeight = view->itemDelegate()->sizeHint(viewItemOption, item).height();
if (itemHeight > maxRowHeight) {
maxRowHeight = itemHeight;
}
rows[currentRow].items.append(item);
positionInRow++;
}
rows[currentRow].height = maxRowHeight;
rows[currentRow].top = offsetFromTop;
}
QPair<int, int> VisualGroup::positionOf(const QModelIndex& index) const
{
int y = 0;
for (auto& row : rows) {
for (auto x = 0; x < row.items.size(); x++) {
if (row.items[x] == index) {
return qMakePair(x, y);
}
}
y++;
}
qWarning() << "Item" << index.row() << index.data(Qt::DisplayRole).toString() << "not found in visual group" << text;
return qMakePair(0, 0);
}
int VisualGroup::rowTopOf(const QModelIndex& index) const
{
auto position = positionOf(index);
return rows[position.second].top;
}
int VisualGroup::rowHeightOf(const QModelIndex& index) const
{
auto position = positionOf(index);
return rows[position.second].height;
}
VisualGroup::HitResults VisualGroup::hitScan(const QPoint& pos) const
{
VisualGroup::HitResults results = VisualGroup::NoHit;
int y_start = verticalPosition();
int body_start = y_start + headerHeight();
int body_end = body_start + contentHeight();
int y = pos.y();
// int x = pos.x();
if (y < y_start) {
results = VisualGroup::NoHit;
} else if (y < body_start) {
results = VisualGroup::HeaderHit;
int collapseSize = headerHeight() - 4;
// the icon
QRect iconRect = QRect(view->m_leftMargin + 2, 2 + y_start, view->width() - 4, collapseSize);
if (iconRect.contains(pos)) {
results |= VisualGroup::CheckboxHit;
}
} else if (y < body_end) {
results |= VisualGroup::BodyHit;
}
return results;
}
void VisualGroup::drawHeader(QPainter* painter, const QStyleOptionViewItem& option) const
{
QRect optRect = option.rect;
optRect.setTop(optRect.top() + 7);
QFont font(QApplication::font());
font.setBold(true);
const QFontMetrics fontMetrics = QFontMetrics(font);
painter->setFont(font);
QPen pen;
pen.setWidth(2);
QColor penColor = option.palette.text().color();
penColor.setAlphaF(0.6);
pen.setColor(penColor);
painter->setPen(pen);
painter->setRenderHint(QPainter::Antialiasing);
// sizes and offsets, to keep things consistent below
int arrowOffsetLeft = fontMetrics.height() / 2 + 7;
int textOffsetLeft = arrowOffsetLeft * 2;
int arrowSize = 6;
int centerHeight = optRect.top() + fontMetrics.height() / 2;
// BEGIN: arrow
{
QPolygon arrowPolygon;
if (collapsed) {
arrowPolygon << QPoint(arrowOffsetLeft - arrowSize / 2, centerHeight - arrowSize)
<< QPoint(arrowOffsetLeft + arrowSize / 2, centerHeight)
<< QPoint(arrowOffsetLeft - arrowSize / 2, centerHeight + arrowSize);
painter->drawPolyline(arrowPolygon);
} else {
arrowPolygon << QPoint(arrowOffsetLeft - arrowSize, centerHeight - arrowSize / 2)
<< QPoint(arrowOffsetLeft, centerHeight + arrowSize / 2)
<< QPoint(arrowOffsetLeft + arrowSize, centerHeight - arrowSize / 2);
painter->drawPolyline(arrowPolygon);
}
}
// END: arrow
// BEGIN: text
{
QRect textRect(optRect);
textRect.setTop(textRect.top());
textRect.setLeft(textOffsetLeft);
textRect.setHeight(fontMetrics.height());
textRect.setRight(textRect.right() - 7);
painter->drawText(textRect, Qt::AlignLeft | Qt::AlignVCenter, !text.isEmpty() ? text : QObject::tr("Ungrouped"));
}
// END: text
}
int VisualGroup::totalHeight() const
{
return headerHeight() + contentHeight();
}
int VisualGroup::headerHeight()
{
QFont font(QApplication::font());
font.setBold(true);
QFontMetrics fontMetrics(font);
const int height = fontMetrics.height() + 1 /* 1 pixel-width gradient */
+ 11 /* top and bottom separation */;
return height;
/*
int raw = view->viewport()->fontMetrics().height() + 4;
// add english. maybe. depends on font height.
if (raw % 2 == 0)
raw++;
return std::min(raw, 25);
*/
}
int VisualGroup::contentHeight() const
{
if (collapsed) {
return 0;
}
auto last = rows[numRows() - 1];
return last.top + last.height;
}
int VisualGroup::numRows() const
{
return (int)rows.size();
}
int VisualGroup::verticalPosition() const
{
return m_verticalPosition;
}
QList<QModelIndex> VisualGroup::items() const
{
QList<QModelIndex> indices;
for (int i = 0; i < view->model()->rowCount(); ++i) {
const QModelIndex index = view->model()->index(i, 0);
if (index.data(InstanceViewRoles::GroupRole).toString() == text) {
indices.append(index);
}
}
return indices;
}