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/*
EventEditorDelegate.cpp
This file is part of Charm, a task-based time tracking application.
Copyright (C) 2014-2018 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
Author: Frank Osterfeld <frank.osterfeld@kdab.com>
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 2 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 "EventEditorDelegate.h"
#include "Data.h"
#include "EventModelFilter.h"
#include "ViewHelpers.h"
#include "Core/CharmConstants.h"
#include "Core/Event.h"
#include <QPainter>
#include <cmath>
EventEditorDelegate::EventEditorDelegate(EventModelFilter *model, QObject *parent)
: QItemDelegate(parent)
, m_model(model)
{
}
QSize EventEditorDelegate::sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
// to have the size hint recalculated, simply set m_cachedSizeHint
// to an invalid value (m_cachedSizeHint = QSize();)
if (!m_cachedSizeHint.isValid()) {
const Event &event = m_model->eventForIndex(index);
Q_ASSERT(event.isValid());
const TaskTreeItem &item = DATAMODEL->taskTreeItem(event.taskId());
QPixmap pixmap(option.rect.size()); // temp
QPainter painter(&pixmap);
m_cachedSizeHint = paint(&painter, option,
taskName(item),
dateAndDuration(event),
42, EventState_Locked).size();
}
return m_cachedSizeHint;
}
void EventEditorDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
const Event &event = m_model->eventForIndex(index);
Q_ASSERT(event.isValid());
const TaskTreeItem &item = DATAMODEL->taskTreeItem(event.taskId());
if (event.isValid()) {
bool locked = DATAMODEL->isEventActive(event.id());
paint(painter, option,
taskName(item),
dateAndDuration(event),
logDuration(event.duration()),
locked ? EventState_Locked : EventState_Default);
}
}
QString EventEditorDelegate::taskName(const TaskTreeItem &item) const
{
QString taskName;
QTextStream taskStream(&taskName);
// print leading zeroes for the TaskId
const int taskIdLength = CONFIGURATION.taskPaddingLength;
taskStream << QStringLiteral("%1").arg(item.task().id(), taskIdLength, 10, QLatin1Char('0'))
<< " " << DATAMODEL->smartTaskName(item.task());
return taskName;
}
QString EventEditorDelegate::dateAndDuration(const Event &event) const
{
QString dateAndDuration;
QTextStream dateStream(&dateAndDuration);
QDate date = event.startDateTime().date();
QTime time = event.startDateTime().time();
QTime endTime = event.endDateTime().time();
dateStream << date.toString(Qt::SystemLocaleDate)
<< " " << time.toString(QStringLiteral("h:mm"))
<< " - " << endTime.toString(QStringLiteral("h:mm"))
<< " (" << hoursAndMinutes(event.duration()) << ") Week "
<< date.weekNumber();
return dateAndDuration;
}
QRect EventEditorDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QString &taskName, const QString ×pan,
double logDuration, EventState state) const
{
painter->save();
const QPalette &palette = option.palette;
const QFont &mainFont = option.font;
painter->setFont(mainFont);
QFont detailFont(mainFont);
detailFont.setPointSizeF(mainFont.pointSizeF() * 0.8);
QPixmap decoration;
QColor foreground;
QColor background;
switch (state) {
case EventState_Locked:
decoration = Data::editorLockedPixmap();
foreground = palette.color(QPalette::Disabled, QPalette::WindowText);
background = palette.color(QPalette::Disabled, QPalette::Window);
break;
case EventState_Dirty:
decoration = Data::editorDirtyPixmap();
foreground = palette.color(QPalette::Active, QPalette::WindowText);
background = palette.color(QPalette::Active, QPalette::Window);
break;
case EventState_Default:
foreground = palette.color(QPalette::Active, QPalette::WindowText);
background = palette.color(QPalette::Active, QPalette::Window);
break;
}
if (option.state & QStyle::State_Selected) {
QBrush brush(palette.color(QPalette::Active, QPalette::Highlight));
painter->fillRect(option.rect, brush);
if (state != EventState_Locked) {
foreground = palette.color(
QPalette::Active, QPalette::HighlightedText);
}
}
painter->setPen(foreground);
// draw line 1 and decoration:
painter->setFont(mainFont);
QRect taskRect(option.rect);
taskRect.setWidth(option.rect.width() - decoration.width());
QPoint decorationPoint(option.rect.width() - decoration.width(),
option.rect.center().y() - decoration.height() / 2);
QRect boundingRect;
QString elidedTask = Charm::elidedTaskName(taskName, mainFont, taskRect.width());
painter->drawText(taskRect, Qt::AlignLeft | Qt::AlignTop, elidedTask,
&boundingRect);
taskRect = boundingRect;
taskRect.setHeight(qMax(taskRect.height(), decoration.height()));
// now taskRect tells us where to start line 2
painter->drawPixmap(decorationPoint, decoration);
// draw line 2 (timespan and comment, partly):
painter->setFont(detailFont);
QRect detailsRect(option.rect);
detailsRect.setTop(taskRect.bottom());
detailsRect.setHeight(option.rect.height() - taskRect.height());
painter->drawText(detailsRect, Qt::AlignLeft | Qt::AlignTop,
timespan, &boundingRect);
detailsRect = boundingRect;
// draw the duration line:
const int Margin = 2;
QRect durationRect(option.rect.left() + 1, detailsRect.bottom(),
static_cast<int>(logDuration * (option.rect.width() - 2)), Margin);
painter->fillRect(durationRect, palette.dark());
painter->restore();
return QRect(0, 0,
qMax(taskRect.width(), detailsRect.width()),
durationRect.bottom() + 1 - option.rect.top());
}
double EventEditorDelegate::logDuration(int duration) const
{ // we rely on the compiler to optimize at compile time :-)
if (duration <= 0)
return 0;
if (duration <= 3600) {
return 0.2 * 1.0 / 3600.0 * duration;
} else {
const double log2 = std::log(2.0);
const double hours = 1.0 / 3600 * duration;
const double value = log(hours) / log2;
return 0.2 * (1.0 + value);
}
}
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