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squawk/ui/utils/messagedelegate.cpp

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/*
* Squawk messenger.
* Copyright (C) 2019 Yury Gubich <blue@macaw.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, either version 3 of the License, or
* (at your option) any later version.
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include <QDebug>
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#include <QPainter>
#include <QApplication>
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#include "messagedelegate.h"
#include "ui/models/messagefeed.h"
constexpr int avatarHeight = 50;
constexpr int margin = 6;
MessageDelegate::MessageDelegate(QObject* parent):
QStyledItemDelegate(parent),
bodyFont(),
nickFont(),
dateFont(),
bodyMetrics(bodyFont),
nickMetrics(nickFont),
dateMetrics(dateFont),
downloadButton(new QPushButton()),
uploadButton(new QPushButton())
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{
downloadButton->setText(tr("Download"));
uploadButton->setText(tr("Retry"));
//this is done for the buttons to calculate their acual size for we are going to use them further
downloadButton->setAttribute(Qt::WA_DontShowOnScreen);
uploadButton->setAttribute(Qt::WA_DontShowOnScreen);
downloadButton->show();
uploadButton->show();
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}
MessageDelegate::~MessageDelegate()
{
delete uploadButton;
delete downloadButton;
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}
void MessageDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
QVariant vi = index.data(Models::MessageFeed::Bulk);
if (!vi.isValid()) {
return;
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}
Models::FeedItem data = qvariant_cast<Models::FeedItem>(vi);
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painter->save();
painter->setRenderHint(QPainter::Antialiasing, true);
if (option.state & QStyle::State_MouseOver) {
painter->fillRect(option.rect, option.palette.brush(QPalette::Inactive, QPalette::Highlight));
}
QIcon icon(data.avatar);
if (data.sentByMe) {
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painter->drawPixmap(option.rect.width() - avatarHeight - margin, option.rect.y() + margin / 2, icon.pixmap(avatarHeight, avatarHeight));
} else {
painter->drawPixmap(margin, option.rect.y() + margin / 2, icon.pixmap(avatarHeight, avatarHeight));
}
QStyleOptionViewItem opt = option;
QRect messageRect = option.rect.adjusted(margin, margin / 2, -(avatarHeight + 2 * margin), -margin / 2);
if (!data.sentByMe) {
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opt.displayAlignment = Qt::AlignLeft | Qt::AlignTop;
messageRect.adjust(avatarHeight + margin, 0, avatarHeight + margin, 0);
} else {
opt.displayAlignment = Qt::AlignRight | Qt::AlignTop;
}
opt.rect = messageRect;
QSize messageSize = bodyMetrics.boundingRect(messageRect, Qt::TextWordWrap, data.text).size();
messageSize.rheight() += nickMetrics.lineSpacing();
messageSize.rheight() += dateMetrics.height();
if (messageSize.width() < opt.rect.width()) {
QSize senderSize = nickMetrics.boundingRect(messageRect, 0, data.sender).size();
if (senderSize.width() > messageSize.width()) {
messageSize.setWidth(senderSize.width());
}
} else {
messageSize.setWidth(opt.rect.width());
}
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QRect rect;
painter->setFont(nickFont);
painter->drawText(opt.rect, opt.displayAlignment, data.sender, &rect);
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opt.rect.adjust(0, rect.height(), 0, 0);
painter->save();
switch (data.attach.state) {
case Models::none:
break;
case Models::uploading:
case Models::downloading:
break;
case Models::remote:
if (data.sentByMe) {
painter->translate(option.rect.width() - avatarHeight - margin * 2 - downloadButton->width(), opt.rect.top());
} else {
painter->translate(opt.rect.topLeft());
}
downloadButton->render(painter, QPoint(), QRegion(), QWidget::DrawChildren);
opt.rect.adjust(0, downloadButton->height(), 0, 0);
break;
case Models::local:
if (data.sentByMe) {
painter->translate(option.rect.width() - avatarHeight - margin * 2 - uploadButton->width(), opt.rect.top());
} else {
painter->translate(opt.rect.topLeft());
}
uploadButton->render(painter, QPoint(), QRegion(), QWidget::DrawChildren);
opt.rect.adjust(0, uploadButton->height(), 0, 0);
break;
case Models::ready:
break;
}
painter->restore();
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painter->setFont(bodyFont);
painter->drawText(opt.rect, opt.displayAlignment | Qt::TextWordWrap, data.text, &rect);
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opt.rect.adjust(0, rect.height(), 0, 0);
painter->setFont(dateFont);
QColor q = painter->pen().color();
q.setAlpha(180);
painter->setPen(q);
painter->drawText(opt.rect, opt.displayAlignment, data.date.toLocalTime().toString(), &rect);
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painter->restore();
}
QSize MessageDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
{
QRect messageRect = option.rect.adjusted(0, margin / 2, -(avatarHeight + 3 * margin), -margin / 2);
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QStyleOptionViewItem opt = option;
opt.rect = messageRect;
QVariant va = index.data(Models::MessageFeed::Attach);
Models::Attachment attach = qvariant_cast<Models::Attachment>(va);
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QSize messageSize = bodyMetrics.boundingRect(messageRect, Qt::TextWordWrap, index.data(Models::MessageFeed::Text).toString()).size();
switch (attach.state) {
case Models::none:
break;
case Models::uploading:
case Models::downloading:
break;
case Models::remote:
case Models::local:
messageSize.rheight() += downloadButton->height();
break;
case Models::ready:
break;
}
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messageSize.rheight() += nickMetrics.lineSpacing();
messageSize.rheight() += dateMetrics.height();
if (messageSize.height() < avatarHeight) {
messageSize.setHeight(avatarHeight);
}
messageSize.rheight() += margin;
return messageSize;
}
void MessageDelegate::initializeFonts(const QFont& font)
{
bodyFont = font;
nickFont = font;
dateFont = font;
nickFont.setBold(true);
dateFont.setItalic(true);
float dps = dateFont.pointSizeF();
if (dps != -1) {
dateFont.setPointSizeF(dps * 0.7);
} else {
dateFont.setPointSize(dateFont.pointSize() - 2);
}
bodyMetrics = QFontMetrics(bodyFont);
nickMetrics = QFontMetrics(nickFont);
dateMetrics = QFontMetrics(dateFont);
}
bool MessageDelegate::editorEvent(QEvent* event, QAbstractItemModel* model, const QStyleOptionViewItem& option, const QModelIndex& index)
{
//qDebug() << event->type();
return QStyledItemDelegate::editorEvent(event, model, option, index);
}
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// void MessageDelegate::setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const
// {
//
// }