/**********************************************************************************************
    Copyright (C) 2015 Christian Eichler <code@christian-eichler.de>

    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 "widgets/CTinySpinBox.h"

#include <QtWidgets>

void CTinySpinBox::initialize() {
  initialized = true;

  paletteEdit = QPalette(palette());
  paletteRO = QPalette(palette());
  paletteRW = QPalette(palette());
  paletteRW.setColor(QPalette::Text, QColor(0, 0, 255));

  fontNoUnderline = QFont(font());
  fontUnderline = QFont(font());
  fontUnderline.setUnderline(true);
}

void CTinySpinBox::updateStyle() {
  if (!initialized) {
    initialize();
  }

  if (isReadOnly()) {
    setPalette(paletteRO);
    setFont(fontNoUnderline);
  } else if (hasFocus()) {
    setPalette(paletteEdit);
    setFont(fontNoUnderline);
  } else {
    setPalette(paletteRW);
    setFont(fontUnderline);
  }
}

CTinySpinBox::CTinySpinBox(QWidget* parent) : QSpinBox(parent) {
  // initialization has to be done deferred,
  // as the correct palette is set after construction
  initialized = false;
}

void CTinySpinBox::stepBy(int steps) {
  QSpinBox::stepBy(steps);
  emit valueChangedByStep(value());
}

void CTinySpinBox::setReadOnly(bool r) {
  QSpinBox::setReadOnly(r);
  updateStyle();
}

void CTinySpinBox::focusInEvent(QFocusEvent* event) {
  updateStyle();
  if (!isReadOnly()) {
    QTimer::singleShot(0, this, &CTinySpinBox::slotSelectAll);
  }

  QSpinBox::focusInEvent(event);
}

void CTinySpinBox::focusOutEvent(QFocusEvent* event) {
  updateStyle();
  QSpinBox::focusOutEvent(event);
}
