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/*
* qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
* Copyright (C) 2026 Danilo M. <danix@danix.xyz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "monthlayout.h"
MonthLayout::MonthLayout(const QRect &area, int year, int month, Qt::DayOfWeek firstDay,
int dayNumberHeight, int chipHeight)
: m_area(area), m_start(gridStart(year, month, firstDay)),
m_dayNumberHeight(dayNumberHeight), m_chipHeight(chipHeight)
{
}
QDate MonthLayout::gridStart(int year, int month, Qt::DayOfWeek firstDay)
{
const QDate first(year, month, 1);
const int back = (first.dayOfWeek() - firstDay + 7) % 7;
return first.addDays(-back);
}
QDate MonthLayout::dateAt(int cell) const { return m_start.addDays(cell); }
int MonthLayout::cellOf(const QDate &date) const
{
const qint64 cell = m_start.daysTo(date);
return cell >= 0 && cell < kCells ? int(cell) : -1;
}
QRect MonthLayout::cellRect(int cell) const
{
// Edges computed from the area by proportion, so the rounding remainder
// is spread across cells and the last edge lands exactly on the area's.
const int col = cell % 7, row = cell / 7;
const int left = m_area.left() + m_area.width() * col / 7;
const int right = m_area.left() + m_area.width() * (col + 1) / 7; // exclusive
const int top = m_area.top() + m_area.height() * row / 6;
const int bottom = m_area.top() + m_area.height() * (row + 1) / 6;
return QRect(QPoint(left, top), QPoint(right - 1, bottom - 1));
}
int MonthLayout::cellAt(const QPoint &point) const
{
if (!m_area.contains(point))
return -1;
const int col = (point.x() - m_area.left()) * 7 / m_area.width();
const int row = (point.y() - m_area.top()) * 6 / m_area.height();
return row * 7 + col;
}
int MonthLayout::capacity() const
{
const int height = m_area.height() / 6 - m_dayNumberHeight;
return m_chipHeight > 0 ? qMax(0, height / m_chipHeight) : 0;
}
int MonthLayout::visibleChips(int total) const
{
const int cap = capacity();
return total <= cap ? total : qMax(0, cap - 1);
}
QRect MonthLayout::chipRect(int cell, int slot) const
{
const QRect c = cellRect(cell);
return QRect(c.left() + 2, c.top() + m_dayNumberHeight + slot * m_chipHeight,
c.width() - 4, m_chipHeight - 1);
}
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