// Copyright(c) 2017-2018 Alejandro Sirgo Rica & Contributors
//
// This file is part of Flameshot.
//
//     Flameshot 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.
//
//     Flameshot 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 Flameshot.  If not, see <http://www.gnu.org/licenses/>.

#include "textwidget.h"

TextWidget::TextWidget(QWidget *parent) : QTextEdit(parent) {
    setStyleSheet("TextWidget { background: transparent; }");
    connect(this, &TextWidget::textChanged,
            this, &TextWidget::adjustSize);
    connect(this, &TextWidget::textChanged,
            this, &TextWidget::emitTextUpdated);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    setContextMenuPolicy(Qt::NoContextMenu);
}

void TextWidget::showEvent(QShowEvent *e) {
    QFont font;
    QFontMetrics fm(font);
    setFixedWidth(fm.lineSpacing() *6);
    setFixedHeight(fm.lineSpacing() * 2.5);
    m_baseSize = size();
    m_minSize = m_baseSize;
    QTextEdit::showEvent(e);
    adjustSize();
}

void TextWidget::resizeEvent(QResizeEvent *e) {
    m_minSize.setHeight(qMin(m_baseSize.height(), height()));
    m_minSize.setWidth(qMin(m_baseSize.width(), width()));
    QTextEdit::resizeEvent(e);
}

void TextWidget::setFont(const QFont &f) {
    QTextEdit::setFont(f);
    adjustSize();
}

void TextWidget::updateFont(const QFont &f) {
    setFont(f);
}

void TextWidget::setFontPointSize(qreal s) {
    QFont f = font();
    f.setPointSize(s);
    setFont(f);
}

void TextWidget::setTextColor(const QColor &c) {
    QString s("TextWidget { background: transparent; color: %1; }");
    setStyleSheet(s.arg(c.name()));
}

void TextWidget::adjustSize() {
    QString &&text = this->toPlainText();

    QFontMetrics fm(font());
    QRect bounds = fm.boundingRect(QRect(), 0, text);
    int pixelsWide = bounds.width() + fm.lineSpacing();
    int pixelsHigh = bounds.height() * 1.15 + fm.lineSpacing();
    if (pixelsWide < m_minSize.width()) {
        pixelsWide = m_minSize.width();
    }
    if (pixelsHigh < m_minSize.height()) {
        pixelsHigh = m_minSize.height();
    }

    this->setFixedSize(pixelsWide, pixelsHigh);
}

void TextWidget::emitTextUpdated() {
    emit textUpdated(this->toPlainText());
}