150 lines
3.9 KiB
C++
150 lines
3.9 KiB
C++
/* Copyright 2013 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <QHeaderView>
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#include <QApplication>
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#include <QMouseEvent>
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#include <QDrag>
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#include <QPainter>
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#include "VersionListView.h"
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#include "Common.h"
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VersionListView::VersionListView(QWidget *parent)
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:QTreeView ( parent )
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{
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m_emptyString = tr("No versions are currently available.");
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}
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void VersionListView::rowsInserted(const QModelIndex &parent, int start, int end)
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{
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if(!m_itemCount)
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viewport()->update();
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m_itemCount += end-start+1;
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QTreeView::rowsInserted(parent, start, end);
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}
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void VersionListView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
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{
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m_itemCount -= end-start+1;
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if(!m_itemCount)
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viewport()->update();
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QTreeView::rowsInserted(parent, start, end);
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}
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void VersionListView::setModel(QAbstractItemModel *model)
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{
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m_itemCount = model->rowCount();
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if(!m_itemCount)
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viewport()->update();
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QTreeView::setModel(model);
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}
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void VersionListView::reset()
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{
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if(model())
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{
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m_itemCount = model()->rowCount();
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}
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viewport()->update();
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QTreeView::reset();
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}
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void VersionListView::setEmptyString(QString emptyString)
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{
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m_emptyString = emptyString;
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if(!m_itemCount)
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{
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viewport()->update();
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}
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}
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void VersionListView::paintEvent(QPaintEvent *event)
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{
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if(m_itemCount)
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{
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QTreeView::paintEvent(event);
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}
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else
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{
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paintInfoLabel(event);
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}
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}
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void VersionListView::paintInfoLabel(QPaintEvent *event)
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{
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int scrollInterval = 500;
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//calculate the rect for the overlay
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QPainter painter(viewport());
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painter.setRenderHint(QPainter::Antialiasing, true);
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const QChar letter = 'Q';
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QFont font("sans", 20);
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font.setBold(true);
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QRect bounds = viewport()->geometry();
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bounds.moveTop(0);
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QTextLayout layout(m_emptyString, font);
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qreal height = 0.0;
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qreal widthUsed = 0.0;
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QStringList lines = viewItemTextLayout(layout, bounds.width() - 20, height, widthUsed);
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QRect rect (0,0, widthUsed, height);
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rect.setWidth(rect.width()+20);
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rect.setHeight(rect.height()+20);
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rect.moveCenter(bounds.center());
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//check if we are allowed to draw in our area
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if (!event->rect().intersects(rect)) {
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return;
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}
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//draw the letter of the topmost item semitransparent in the middle
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QColor background = QApplication::palette().color(QPalette::Foreground);
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QColor foreground = QApplication::palette().color(QPalette::Base);
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/*
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background.setAlpha(128 - scrollFade);
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foreground.setAlpha(128 - scrollFade);
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*/
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painter.setBrush(QBrush(background));
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painter.setPen(foreground);
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painter.drawRoundedRect(rect, 5.0, 5.0);
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foreground.setAlpha(190);
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painter.setPen(foreground);
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painter.setFont(font);
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painter.drawText(rect, Qt::AlignCenter, lines.join("\n"));
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}
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/*
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void ModListView::setModel ( QAbstractItemModel* model )
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{
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QTreeView::setModel ( model );
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auto head = header();
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head->setStretchLastSection(false);
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// HACK: this is true for the checkbox column of mod lists
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auto string = model->headerData(0,head->orientation()).toString();
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if(!string.size())
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{
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head->setSectionResizeMode(0, QHeaderView::ResizeToContents);
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head->setSectionResizeMode(1, QHeaderView::Stretch);
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for(int i = 2; i < head->count(); i++)
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head->setSectionResizeMode(i, QHeaderView::ResizeToContents);
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}
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else
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{
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head->setSectionResizeMode(0, QHeaderView::Stretch);
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for(int i = 1; i < head->count(); i++)
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head->setSectionResizeMode(i, QHeaderView::ResizeToContents);
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}
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}
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*/ |