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/***************************************************************************
* Copyright (C) 2011-2014 by Savoir-Faire Linux *
* Author : Emmanuel Lepage Vallee <emmanuel.lepage@savoirfairelinux.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 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 "delegatedropoverlay.h"
#include <QtGui/QPainter>
#include <KDebug>
#include <QtCore/QTimer>
#include <QDragEnterEvent>
#include <QDragMoveEvent>
#include <QDragLeaveEvent>
#include <QMimeData>
#include <QtGui/QApplication>
#include "lib/call.h"
#include <lib/abstractcontactbackend.h>
///Constructor
DelegateDropOverlay::DelegateDropOverlay(QObject* parent):QObject(parent),
m_pTimer(0),m_Init(false),m_Reverse(1),m_lpButtons(nullptr)
{
const QColor color = QApplication::palette().base().color();
const bool dark = (color.red() > 128 && color.green() > 128 && color.blue() > 128);
if (dark)
m_Pen.setColor("#f3f3f3");
else
m_Pen.setColor(Qt::white);
}
///Destructor
DelegateDropOverlay::~DelegateDropOverlay()
{
if (m_pTimer) delete m_pTimer;
}
///How to paint
void DelegateDropOverlay::paintEvent(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index)
{
if (!m_lpButtons)
return;
static bool initSignals = false;
if (!initSignals) {
connect(index.model(),SIGNAL(layoutChanged()),this,SLOT(slotLayoutChanged()));
initSignals = true;
}
int step = index.data(AbstractContactBackend::Role::DropState).toInt();
if ((step == 1 || step == -1) && m_lActiveIndexes.indexOf(index) == -1) {
m_lActiveIndexes << index;
//Create tge timer
if (!m_pTimer) {
m_pTimer = new QTimer(this);
connect(m_pTimer, SIGNAL(timeout()), this, SLOT(changeVisibility()));
}
//Start it if it's nor already
if (!m_pTimer->isActive()) {
m_pTimer->start(10);
}
}
int i =0;
QMapIterator<QString, OverlayButton*> it(*m_lpButtons);
const int dropPosition = index.data(Call::Role::DropPosition).toInt();
while (it.hasNext()) {
it.next();
if (step) {
const bool highlight = dropPosition == it.value()->role;
const int tmpStep = (step>0)?step:15+step;
painter->save();
painter->setOpacity(1);
painter->setRenderHint(QPainter::Antialiasing, true);
QPen pen = highlight?QApplication::palette().color(QPalette::Highlight): QColor(235,235,235,235);
pen.setWidth(1.5);
painter->setPen(pen);
QLinearGradient linearGrad(QPointF(0, 0), QPointF(0, 100));
linearGrad.setColorAt(0, QColor(130,130,130,(0.7*tmpStep*tmpStep)));
linearGrad.setColorAt(1, QColor(0,0,0,(0.75*tmpStep*tmpStep)));
painter->setBrush(linearGrad);
const QRect buttonRect = QRect(
option.rect.x()+(option.rect.width()/m_lpButtons->size())*i+4,
option.rect.y()+2,
option.rect.width()/m_lpButtons->size() - 10,
option.rect.height()-4);
painter->drawRoundedRect(buttonRect, 10, 10);
painter->setPen(highlight?QColor(Qt::white):m_Pen);
if (it.value()->m_pImage) {
painter->drawImage(QRect(
buttonRect.x()+buttonRect.width()-(buttonRect.height()-10)-10/*padding*/,
buttonRect.y()+5,
(buttonRect.height()-10),
(buttonRect.height()-10)),*it.value()->m_pImage);
}
QFont font = painter->font();
font.setBold(true);
painter->setFont(font);
painter->drawText (buttonRect, Qt::AlignVCenter|Qt::AlignHCenter, QString(it.key()).remove('&') );
painter->restore();
i++;
if (highlight) {
QColor col = pen.color();
for(int i=1;i<=4;i++) {
painter->setBrush(Qt::NoBrush);
pen.setWidth(i);
col.setAlpha(205*(0.5/((float)i)));
pen.setColor(col);
painter->setPen(pen);
painter->drawRoundedRect(buttonRect, 10, 10);
}
}
}
}
}//paintEvent
///Step by step animation
void DelegateDropOverlay::changeVisibility()
{
foreach(const QModelIndex& idx, m_lActiveIndexes) {
//There is a race condition when removing a conference participant
if (idx.isValid() && !idx.model()->rowCount(idx)) {
int step = idx.data(AbstractContactBackend::Role::DropState).toInt();
//Remove items from the loop if there is no animation
if (step >= 15 || step <= -15) {
m_lActiveIndexes.removeAll(idx);
if (step <= -15) //Hide the overlay
((QAbstractItemModel*)idx.model())->setData(idx,QVariant((int)0),AbstractContactBackend::Role::DropState);
}
else {
//Update opacity
step+=(step>0)?1:-1;
((QAbstractItemModel*)idx.model())->setData(idx,QVariant((int)step),AbstractContactBackend::Role::DropState);
}
}
}
//Stop loop if no animations are running
if (!m_lActiveIndexes.size()) {
m_pTimer->stop();
}
}
///Prevent a race condition between the timer and model changes
void DelegateDropOverlay::slotLayoutChanged()
{
m_lActiveIndexes.clear();
}
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