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/*
* Qt UI
*
* Copyright (C) 2015 Samsung Electronics Co., Ltd. All rights reserved.
*
* Contact:
* GiWoong Kim <giwoong.kim@samsung.com>
* Sangho Park <sangho1206.park@samsung.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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* Contributors:
* - S-Core Co., Ltd
*
*/
#include <QWidget>
#include "rotaryview.h"
#include "mainwindow.h"
extern "C" {
#include "util/ui_operations.h"
}
#define ROTARY_DRAWING_INTERVAL 100
RotaryView::RotaryView(QWidget *parent) :
QGraphicsView(new QGraphicsScene(parent), parent)
{
this->win = (MainWindow *)parent;
this->rotaryImg = NULL;
this->rotaryItem = NULL;
this->grabPos = QPoint(-1, -1);
this->grabAngle = 0;
this->rotaryDegree = 0;
this->lastTimestamp = 0;
timer = new QTimer(this);
timer->setSingleShot(true);
connect(timer, SIGNAL(timeout()), this, SLOT(rotateRotaryItem()));
setStyleSheet("background-color: rgb(189, 189, 189); border-style: none");
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setAlignment(Qt::AlignLeft | Qt::AlignTop);
updateLayout();
}
void RotaryView::createItems()
{
rotaryItem = new QGraphicsPixmapItem(*rotaryImg);
rotaryItem->setTransformOriginPoint(
rotaryImg->width() / 2, rotaryImg->height() / 2);
rotaryItem->setRotation(rotaryDegree);
scene()->addItem(rotaryItem);
}
void RotaryView::updateLayout()
{
scene()->clear();
rotaryImg = win->getUiInfo()->getMainForm()->getRotaryImage();
const QRect displayRect =
win->getUiInfo()->getMainFormDpyType()->getRect();
/* repositioning & resizing */
const int alignOffsetX = (rotaryImg->width() - displayRect.width()) / 2;
const int alignOffsetY = (rotaryImg->height() - displayRect.height()) / 2;
const qreal scaleFactor = win->getUiState()->getScaleFactor();
setGeometry(
(displayRect.x() - alignOffsetX) * scaleFactor,
(displayRect.y() - alignOffsetY) * scaleFactor,
rotaryImg->width() * scaleFactor,
rotaryImg->height() * scaleFactor);
scene()->setSceneRect(0, 0, width(), height());
createItems();
}
void RotaryView::rotateRotaryItem()
{
rotaryItem->setRotation(rotaryDegree);
}
/* override */
void RotaryView::resizeEvent(QResizeEvent *event)
{
qDebug() << "resize rotary view:" << size();
/* scaling */
const qreal sx = win->getUiState()->getScaleFactor();
const qreal sy = win->getUiState()->getScaleFactor();
setTransform(QTransform(sx, 0, 0, 0, sy, 0, 0, 0, 1));
/* masking */
QPixmap scaledRotaryImg = rotaryImg->scaled(
rotaryImg->width() * win->getUiState()->getScaleFactor(),
rotaryImg->height() * win->getUiState()->getScaleFactor());
setMask(scaledRotaryImg.mask());
QGraphicsView::resizeEvent(event);
}
/* override */
void RotaryView::setMask(const QRegion ®ion)
{
if (region.isEmpty() == false) {
QWidget::setMask(region);
}
}
int RotaryView::getAngleFromVector(QPoint pos)
{
return (int)(qAtan2(
pos.y() - (height() / 2), pos.x() - (width() / 2)) *
float(180 / M_PI) /* radians to degress */);
}
/* override */
void RotaryView::mousePressEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton) {
grabPos = event->pos();
grabAngle = getAngleFromVector(grabPos);
}
QGraphicsView::mousePressEvent(event);
}
/* override */
void RotaryView::mouseReleaseEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton) {
grabPos = QPoint(-1, -1);
grabAngle = 0;
}
rotateRotaryItem();
QGraphicsView::mouseReleaseEvent(event);
}
/* override */
void RotaryView::mouseMoveEvent(QMouseEvent *event)
{
if (grabPos != QPoint(-1, -1)) {
const int moveAngle = getAngleFromVector(event->pos());
int deltaAngle = moveAngle - grabAngle;
if (deltaAngle < -180) {
deltaAngle += 360; /* 359 -> 0 */
} else if (deltaAngle > 180) {
deltaAngle -= 360; /* 0 -> 359 */
}
/* convert to device event */
do_rotary_event(deltaAngle, 0);
rotaryDegree += deltaAngle;
grabAngle = moveAngle;
/* drawing */
if ((event->timestamp() - lastTimestamp) > ROTARY_DRAWING_INTERVAL) {
timer->stop();
rotateRotaryItem();
lastTimestamp = event->timestamp();
} else {
timer->start(ROTARY_DRAWING_INTERVAL * 3);
}
}
QGraphicsView::mouseMoveEvent(event);
}
RotaryView::~RotaryView()
{
qDebug("destroy rotary view");
timer->stop();
}
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