forked from blue/squawk
133 lines
4.2 KiB
C++
133 lines
4.2 KiB
C++
// Squawk messenger.
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// Copyright (C) 2019 Yury Gubich <blue@macaw.me>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "keydelegate.h"
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#include <QPainter>
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#include <QFontDatabase>
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#include "keysmodel.h"
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constexpr int minHeight = 50;
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constexpr int minWidth = 400;
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constexpr uint8_t margin = 10;
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constexpr uint8_t partSize = 8;
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constexpr uint8_t maxSingleLineParts = 3;
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UI::KeyDelegate::KeyDelegate(QObject* parent):
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QStyledItemDelegate(parent),
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fingerPrintFont(QFontDatabase::systemFont(QFontDatabase::FixedFont)),
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fingerPrintMetrics(fingerPrintFont),
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spaceWidth(fingerPrintMetrics.horizontalAdvance(" "))
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{
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}
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UI::KeyDelegate::~KeyDelegate() {}
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void UI::KeyDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const {
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painter->save();
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painter->setRenderHint(QPainter::Antialiasing, true);
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bool hover = option.state & QStyle::State_MouseOver;
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if (hover) {
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painter->save();
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painter->fillRect(option.rect, option.palette.brush(QPalette::Inactive, QPalette::Highlight));
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painter->restore();
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}
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QVariant fingerPrintV = index.data(UI::KeysModel::FingerPrint);
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if (fingerPrintV.isValid()) {
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painter->save();
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painter->setFont(fingerPrintFont);
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QByteArray fingerPrint = fingerPrintV.toByteArray();
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std::vector<QString> parts = getParts(fingerPrint);
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uint8_t partsLength = parts.size();
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QRect rect = option.rect;
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rect.adjust(margin, margin, 0, 0);
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QRect r;
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uint8_t firstLine;
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if (partsLength > maxSingleLineParts)
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firstLine = partsLength / 2 + partsLength % 2;
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else
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firstLine = partsLength;
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for (uint8_t i = 0; i < partsLength; ++i) {
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if (i == firstLine) {
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rect.setLeft(option.rect.left() + margin);
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rect.adjust(0, r.height() + fingerPrintMetrics.leading(), 0, 0);
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}
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painter->drawText(rect, Qt::AlignLeft | Qt::AlignTop, parts[i], &r);
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rect.adjust(r.width() + spaceWidth ,0, 0, 0);
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}
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painter->restore();
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}
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//painter->drawText(option.rect, option.displayAlignment, index.data().toString());
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painter->restore();
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}
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QSize UI::KeyDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const {
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QSize size = QStyledItemDelegate::sizeHint(option, index);
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int mh = margin * 2;
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int mw = margin * 2;
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QVariant fingerPrintV = index.data(UI::KeysModel::FingerPrint);
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if (fingerPrintV.isValid()) {
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QString hex = fingerPrintV.toByteArray().toHex();
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uint8_t parts = hex.size() / partSize;
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mh += fingerPrintMetrics.height();
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if (parts > maxSingleLineParts) {
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mh += fingerPrintMetrics.height() + fingerPrintMetrics.leading();
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}
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uint8_t firstLine;
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if (parts > maxSingleLineParts)
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firstLine = parts / 2 + parts % 2;
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else
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firstLine = parts;
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mw += firstLine * partSize * spaceWidth + (firstLine - 1) * spaceWidth;
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}
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if (size.width() < mw)
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size.setWidth(mw);
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if (size.height() < mh)
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size.setHeight(mh);
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return size;
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}
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std::vector<QString> UI::KeyDelegate::getParts(const QByteArray& data) {
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QString hex = data.toHex();
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uint8_t parts = hex.size() / partSize;
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std::vector<QString> result(parts);
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for (uint8_t i = 0; i < parts; ++i) {
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uint16_t index = i * partSize;
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uint8_t length = partSize;
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if (index + length > hex.size())
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length = hex.size() - index;
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QStringRef part(&hex, index, length);
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result[i] = part.toString();
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}
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return result;
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}
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