squawk/ui/widgets/vcard/omemo/keydelegate.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 "keydelegate.h"
#include <QPainter>
#include <QDebug>
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#include "keysmodel.h"
#include <shared/global.h>
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constexpr uint8_t margin = 10;
constexpr uint8_t partSize = 8;
constexpr uint8_t maxSingleLineParts = 3;
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UI::KeyDelegate::KeyDelegate(QObject* parent):
QStyledItemDelegate(parent),
defaultFont(Shared::Global::getInstance()->defaultFont),
fingerPrintFont(Shared::Global::getInstance()->monospaceFont),
labelFont(Shared::Global::getInstance()->smallFont),
defaultMetrics(Shared::Global::getInstance()->defaultFontMetrics),
fingerPrintMetrics(Shared::Global::getInstance()->monospaceMetrics),
labelMetrics(Shared::Global::getInstance()->smallFontMetrics),
spaceWidth(fingerPrintMetrics.horizontalAdvance(" "))
{}
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UI::KeyDelegate::~KeyDelegate() {}
void UI::KeyDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const {
painter->save();
painter->setRenderHint(QPainter::Antialiasing, true);
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QRect r;
int maxRight = 0;
int leftOrigin = option.rect.left() + margin;
QColor q = painter->pen().color();
q.setAlpha(180);
QRect rect = option.rect;
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bool hover = option.state & QStyle::State_MouseOver;
if (hover) {
painter->save();
painter->fillRect(option.rect, option.palette.brush(QPalette::Inactive, QPalette::Highlight));
painter->restore();
}
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QVariant dirtyV = index.data(UI::KeysModel::Dirty);
if (dirtyV.isValid() && dirtyV.toBool()) {
painter->save();
rect.setWidth(margin / 2);
painter->fillRect(rect, option.palette.brush(QPalette::Active, QPalette::Highlight));
rect.setWidth(option.rect.width());
painter->restore();
}
rect.adjust(margin, margin, -margin, -margin);
QVariant labelV = index.data(UI::KeysModel::Label);
if (labelV.isValid()) {
QString label = labelV.toString();
if (label.size() > 0) {
painter->save();
painter->setFont(labelFont);
painter->setPen(q);
painter->drawText(rect, Qt::AlignLeft | Qt::AlignTop, label, &r);
rect.adjust(0, labelMetrics.lineSpacing(), 0, 0);
maxRight = std::max(r.width(), maxRight);
painter->restore();
}
}
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QVariant fingerPrintV = index.data(UI::KeysModel::FingerPrint);
if (fingerPrintV.isValid()) {
painter->save();
painter->setFont(fingerPrintFont);
QByteArray fingerPrint = fingerPrintV.toByteArray();
std::vector<QString> parts = getParts(fingerPrint);
uint8_t partsLength = parts.size();
uint8_t firstLine;
if (partsLength > maxSingleLineParts)
firstLine = partsLength / 2 + partsLength % 2;
else
firstLine = partsLength;
for (uint8_t i = 0; i < partsLength; ++i) {
if (i == firstLine) {
maxRight = std::max(rect.left() - leftOrigin - margin, maxRight);
rect.setLeft(leftOrigin);
rect.adjust(0, r.height() + fingerPrintMetrics.leading(), 0, 0);
}
painter->drawText(rect, Qt::AlignLeft | Qt::AlignTop, parts[i], &r);
rect.adjust(r.width() + spaceWidth ,0, 0, 0);
}
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maxRight = std::max(rect.left() - leftOrigin - margin, maxRight);
rect.adjust(0, r.height() + fingerPrintMetrics.leading(), 0, 0);
rect.setLeft(leftOrigin);
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painter->restore();
}
QVariant lastV = index.data(UI::KeysModel::LastInteraction);
if (lastV.isValid()) {
QDateTime last = lastV.toDateTime();
if (last.isValid()) {
painter->save();
painter->setFont(labelFont);
painter->setPen(q);
painter->drawText(rect, Qt::AlignLeft | Qt::AlignTop, last.toString(), &r);
rect.adjust(0, labelMetrics.lineSpacing(), 0, 0);
maxRight = std::max(r.width(), maxRight);
painter->restore();
}
}
QVariant levelV = index.data(UI::KeysModel::TrustLevel);
if (levelV.isValid()) {
Shared::TrustLevel level = static_cast<Shared::TrustLevel>(levelV.toUInt());
QString levelName = Shared::Global::getName(level);
if (maxRight > 0)
maxRight += margin;
rect.setLeft(leftOrigin + maxRight);
rect.setTop(option.rect.top() + maxRight);
rect.setBottom(option.rect.bottom() - maxRight);
painter->setFont(defaultFont);
painter->drawText(rect, Qt::AlignLeft | Qt::AlignVCenter, levelName, &r);
}
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painter->restore();
}
QSize UI::KeyDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const {
QSize size = QStyledItemDelegate::sizeHint(option, index);
int mh = margin * 2;
int mw = margin * 2;
int width = 0;
QVariant labelV = index.data(UI::KeysModel::Label);
if (labelV.isValid()) {
QString label = labelV.toString();
if (label.size() > 0) {
mh += labelMetrics.lineSpacing();
width = labelMetrics.horizontalAdvance(label);
}
}
QVariant fingerPrintV = index.data(UI::KeysModel::FingerPrint);
if (fingerPrintV.isValid()) {
QString hex = fingerPrintV.toByteArray().toHex();
uint8_t parts = hex.size() / partSize;
mh += fingerPrintMetrics.height();
if (parts > maxSingleLineParts)
mh += fingerPrintMetrics.height() + fingerPrintMetrics.leading();
uint8_t firstLine;
if (parts > maxSingleLineParts)
firstLine = parts / 2 + parts % 2;
else
firstLine = parts;
width = std::max(width, firstLine * fingerPrintMetrics.horizontalAdvance(hex, partSize) + (firstLine - 1) * spaceWidth);
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width += 1; //there is a mistake somewhere, this the cheapest way to compensate it
}
QVariant lastV = index.data(UI::KeysModel::LastInteraction);
if (lastV.isValid()) {
QDateTime last = lastV.toDateTime();
if (last.isValid()) {
mh += labelMetrics.lineSpacing();
QString dt = last.toString();
width = std::max(labelMetrics.horizontalAdvance(dt), width);
}
}
QVariant levelV = index.data(UI::KeysModel::TrustLevel);
if (levelV.isValid()) {
Shared::TrustLevel level = static_cast<Shared::TrustLevel>(levelV.toUInt());
QString levelName = Shared::Global::getName(level);
if (width > 0)
width += margin;
width += defaultMetrics.horizontalAdvance(levelName);
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width += 1; //there is a mistake somewhere, this the cheapest way to compensate it
}
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mw += width;
if (size.width() < mw)
size.setWidth(mw);
if (size.height() < mh)
size.setHeight(mh);
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return size;
}
std::vector<QString> UI::KeyDelegate::getParts(const QByteArray& data) {
QString hex = data.toHex();
uint8_t parts = hex.size() / partSize;
std::vector<QString> result(parts);
for (uint8_t i = 0; i < parts; ++i) {
uint16_t index = i * partSize;
uint8_t length = partSize;
if (index + length > hex.size())
length = hex.size() - index;
QStringRef part(&hex, index, length);
result[i] = part.toString();
}
return result;
}