PrismLauncher/launcher/instanceview/VisualGroup.cpp

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/* 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"
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#include <QModelIndex>
#include <QPainter>
#include <QtMath>
#include <QApplication>
#include <QDebug>
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#include "InstanceView.h"
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VisualGroup::VisualGroup(const QString &text, InstanceView *view) : view(view), text(text), collapsed(false)
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{
}
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VisualGroup::VisualGroup(const VisualGroup *other)
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: view(other->view), text(other->text), collapsed(other->collapsed)
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{
}
void VisualGroup::update()
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{
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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;
}
auto itemHeight = view->itemDelegate()->sizeHint(view->viewOptions(), 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
{
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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
{
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auto position = positionOf(index);
return rows[position.second].top;
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}
int VisualGroup::rowHeightOf(const QModelIndex &index) const
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{
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auto position = positionOf(index);
return rows[position.second].height;
}
VisualGroup::HitResults VisualGroup::hitScan(const QPoint &pos) const
{
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VisualGroup::HitResults results = VisualGroup::NoHit;
int y_start = verticalPosition();
int body_start = y_start + headerHeight();
int body_end = body_start + contentHeight() + 5; // FIXME: wtf is this 5?
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, collapseSize, collapseSize);
if (iconRect.contains(pos))
{
results |= VisualGroup::CheckboxHit;
}
}
else if (y < body_end)
{
results |= VisualGroup::BodyHit;
}
return results;
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}
void VisualGroup::drawHeader(QPainter *painter, const QStyleOptionViewItem &option)
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{
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painter->setRenderHint(QPainter::Antialiasing);
const QRect optRect = option.rect;
QFont font(QApplication::font());
font.setBold(true);
const QFontMetrics fontMetrics = QFontMetrics(font);
QColor outlineColor = option.palette.text().color();
outlineColor.setAlphaF(0.35);
//BEGIN: top left corner
{
painter->save();
painter->setPen(outlineColor);
const QPointF topLeft(optRect.topLeft());
QRectF arc(topLeft, QSizeF(4, 4));
arc.translate(0.5, 0.5);
painter->drawArc(arc, 1440, 1440);
painter->restore();
}
//END: top left corner
//BEGIN: left vertical line
{
QPoint start(optRect.topLeft());
start.ry() += 3;
QPoint verticalGradBottom(optRect.topLeft());
verticalGradBottom.ry() += fontMetrics.height() + 5;
QLinearGradient gradient(start, verticalGradBottom);
gradient.setColorAt(0, outlineColor);
gradient.setColorAt(1, Qt::transparent);
painter->fillRect(QRect(start, QSize(1, fontMetrics.height() + 5)), gradient);
}
//END: left vertical line
//BEGIN: horizontal line
{
QPoint start(optRect.topLeft());
start.rx() += 3;
QPoint horizontalGradTop(optRect.topLeft());
horizontalGradTop.rx() += optRect.width() - 6;
painter->fillRect(QRect(start, QSize(optRect.width() - 6, 1)), outlineColor);
}
//END: horizontal line
//BEGIN: top right corner
{
painter->save();
painter->setPen(outlineColor);
QPointF topRight(optRect.topRight());
topRight.rx() -= 4;
QRectF arc(topRight, QSizeF(4, 4));
arc.translate(0.5, 0.5);
painter->drawArc(arc, 0, 1440);
painter->restore();
}
//END: top right corner
//BEGIN: right vertical line
{
QPoint start(optRect.topRight());
start.ry() += 3;
QPoint verticalGradBottom(optRect.topRight());
verticalGradBottom.ry() += fontMetrics.height() + 5;
QLinearGradient gradient(start, verticalGradBottom);
gradient.setColorAt(0, outlineColor);
gradient.setColorAt(1, Qt::transparent);
painter->fillRect(QRect(start, QSize(1, fontMetrics.height() + 5)), gradient);
}
//END: right vertical line
//BEGIN: checkboxy thing
{
painter->save();
painter->setRenderHint(QPainter::Antialiasing, false);
painter->setFont(font);
QColor penColor(option.palette.text().color());
penColor.setAlphaF(0.6);
painter->setPen(penColor);
QRect iconSubRect(option.rect);
iconSubRect.setTop(iconSubRect.top() + 7);
iconSubRect.setLeft(iconSubRect.left() + 7);
int sizing = fontMetrics.height();
int even = ( (sizing - 1) % 2 );
iconSubRect.setHeight(sizing - even);
iconSubRect.setWidth(sizing - even);
painter->drawRect(iconSubRect);
/*
if(collapsed)
painter->drawText(iconSubRect, Qt::AlignHCenter | Qt::AlignVCenter, "+");
else
painter->drawText(iconSubRect, Qt::AlignHCenter | Qt::AlignVCenter, "-");
*/
painter->setBrush(option.palette.text());
painter->fillRect(iconSubRect.x(), iconSubRect.y() + iconSubRect.height() / 2,
iconSubRect.width(), 2, penColor);
if (collapsed)
{
painter->fillRect(iconSubRect.x() + iconSubRect.width() / 2, iconSubRect.y(), 2,
iconSubRect.height(), penColor);
}
painter->restore();
}
//END: checkboxy thing
//BEGIN: text
{
QRect textRect(option.rect);
textRect.setTop(textRect.top() + 7);
textRect.setLeft(textRect.left() + 7 + fontMetrics.height() + 7);
textRect.setHeight(fontMetrics.height());
textRect.setRight(textRect.right() - 7);
painter->save();
painter->setFont(font);
QColor penColor(option.palette.text().color());
penColor.setAlphaF(0.6);
painter->setPen(penColor);
painter->drawText(textRect, Qt::AlignLeft | Qt::AlignVCenter, text);
painter->restore();
}
//END: text
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}
int VisualGroup::totalHeight() const
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{
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return headerHeight() + 5 + contentHeight(); // FIXME: wtf is that '5'?
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}
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int VisualGroup::headerHeight() const
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{
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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;
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/*
int raw = view->viewport()->fontMetrics().height() + 4;
// add english. maybe. depends on font height.
if (raw % 2 == 0)
raw++;
return std::min(raw, 25);
*/
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}
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int VisualGroup::contentHeight() const
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{
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if (collapsed)
{
return 0;
}
auto last = rows[numRows() - 1];
return last.top + last.height;
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}
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int VisualGroup::numRows() const
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{
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return rows.size();
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}
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int VisualGroup::verticalPosition() const
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{
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return m_verticalPosition;
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}
QList<QModelIndex> VisualGroup::items() const
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{
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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)
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{
indices.append(index);
}
}
return indices;
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}