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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "cameraexample.h"
#include "messagehandling.h"
#include "contactsdlg.h"
#include "button.h"
#include "businesscardhandling.h"
#include <QDebug>
/*****************************************************************************
* MyVideoSurface
*/
MyVideoSurface::MyVideoSurface(QWidget* widget, VideoIF* target, QObject* parent)
: QAbstractVideoSurface(parent)
{
m_targetWidget = widget;
m_target = target;
m_imageFormat = QImage::Format_Invalid;
}
MyVideoSurface::~MyVideoSurface()
{
}
bool MyVideoSurface::start(const QVideoSurfaceFormat &format)
{
m_videoFormat = format;
const QImage::Format imageFormat = QVideoFrame::imageFormatFromPixelFormat(format.pixelFormat());
const QSize size = format.frameSize();
if (imageFormat != QImage::Format_Invalid && !size.isEmpty()) {
m_imageFormat = imageFormat;
QAbstractVideoSurface::start(format);
return true;
} else {
return false;
}
}
bool MyVideoSurface::present(const QVideoFrame &frame)
{
m_frame = frame;
if (surfaceFormat().pixelFormat() != m_frame.pixelFormat() ||
surfaceFormat().frameSize() != m_frame.size()) {
stop();
return false;
} else {
m_target->updateVideo();
return true;
}
}
void MyVideoSurface::paint(QPainter *painter)
{
if (m_frame.map(QAbstractVideoBuffer::ReadOnly)) {
QImage image(
m_frame.bits(),
m_frame.width(),
m_frame.height(),
m_frame.bytesPerLine(),
m_imageFormat);
QRect r = m_targetWidget->rect();
QPoint centerPic((qAbs(r.size().width() - image.size().width())) / 2, (qAbs(
r.size().height() - image.size().height())) / 2);
if (!image.isNull()) {
painter->drawImage(centerPic,image);
}
m_frame.unmap();
}
}
QList<QVideoFrame::PixelFormat> MyVideoSurface::supportedPixelFormats(
QAbstractVideoBuffer::HandleType handleType) const
{
if (handleType == QAbstractVideoBuffer::NoHandle) {
return QList<QVideoFrame::PixelFormat>()
<< QVideoFrame::Format_RGB32
<< QVideoFrame::Format_ARGB32
<< QVideoFrame::Format_ARGB32_Premultiplied
<< QVideoFrame::Format_RGB565
<< QVideoFrame::Format_RGB555;
} else {
return QList<QVideoFrame::PixelFormat>();
}
}
/*****************************************************************************
* CameraExample
*/
CameraExample::CameraExample(QWidget *parent) :
QMainWindow(parent)
{
setWindowTitle("QCameraExample");
// Opitimizations for screen update and drawing qwidget
setAutoFillBackground(false);
// Prevent to screensaver to activate
m_systemScreenSaver = new QSystemScreenSaver(this);
m_systemScreenSaver->setScreenSaverInhibit();
m_myVideoSurface = 0;
pictureCaptured = false;
showViewFinder = false;
m_focusing = false;
// MMS handling
m_message = new Message(this);
QObject::connect(m_message, SIGNAL(messageStateChanged(int)), this, SLOT(messageStateChanged(int)));
QObject::connect(m_message, SIGNAL(messageReceived(QString,QString,QPixmap)), this, SLOT(messageReceived(QString,QString,QPixmap)));
// Business card handling (Contact's avatar picture)
m_businessCardHandling = new BusinessCardHandling(this);
// Black background
QPalette palette = this->palette();
palette.setColor(QPalette::Background, Qt::black);
setPalette(palette);
// Main widget & layout
QWidget* mainWidget = new QWidget(this);
mainWidget->setPalette(palette);
QHBoxLayout* hboxl = new QHBoxLayout;
hboxl->setSpacing(0);
hboxl->setMargin(0);
// UI stack
m_stackedWidget = new QStackedWidget();
m_stackedWidget->setPalette(palette);
// First widget to stack
m_videoWidget = new QWidget();
m_videoWidget->setPalette(palette);
m_stackedWidget->addWidget(m_videoWidget);
// Second widget to stack
QWidget* secondWidget = new QWidget(this);
secondWidget->setPalette(palette);
m_stackedWidget->addWidget(secondWidget);
m_stackedWidget->setCurrentIndex(0);
hboxl->addWidget(m_stackedWidget);
// Buttons
QSize iconSize(80, 80);
QVBoxLayout* vboxl = new QVBoxLayout;
vboxl->setSpacing(0);
vboxl->setMargin(0);
// Exit button
m_exit = new Button(this);
QObject::connect(m_exit, SIGNAL(pressed()), qApp, SLOT(quit()));
QPixmap p = QPixmap(":/icons/exit.png");
m_exit->setPixmap(p.scaled(iconSize, Qt::KeepAspectRatio, Qt::SmoothTransformation));
vboxl->addWidget(m_exit);
vboxl->setAlignment(m_exit, Qt::AlignHCenter | Qt::AlignTop);
// Camera button
m_cameraBtn = new Button(this);
QObject::connect(m_cameraBtn, SIGNAL(pressed()), this, SLOT(searchAndLock()));
p = QPixmap(":/icons/camera.png");
m_cameraBtn->setPixmap(p.scaled(iconSize, Qt::KeepAspectRatio, Qt::SmoothTransformation));
vboxl->addWidget(m_cameraBtn);
vboxl->setAlignment(m_cameraBtn, Qt::AlignCenter);
// Send MMS button
m_mms = new Button(this);
QObject::connect(m_mms, SIGNAL(pressed()), this, SLOT(openContactsDlg()));
p = QPixmap(":/icons/mms.png");
m_mms->setPixmap(p.scaled(iconSize, Qt::KeepAspectRatio, Qt::SmoothTransformation));
vboxl->addWidget(m_mms);
vboxl->setAlignment(m_mms, Qt::AlignHCenter | Qt::AlignBottom);
#ifndef MESSAGING_ENABLED
m_mms->disableBtn(true);
m_mms->setEnabled(false);
#endif
hboxl->addLayout(vboxl);
mainWidget->setLayout(hboxl);
setCentralWidget(mainWidget);
// Enable camera after 1s, so that the application is started
// and widget is created to landscape orientation
QTimer::singleShot(1000,this,SLOT(enableCamera()));
}
CameraExample::~CameraExample()
{
if (m_myVideoSurface)
m_myVideoSurface->stop();
m_camera->stop();
delete m_stackedWidget;
delete m_stillImageCapture;
delete m_camera;
}
void CameraExample::enableCamera()
{
m_camera = new QCamera();
m_camera->setCaptureMode(QCamera::CaptureStillImage);
connect(m_camera, SIGNAL(error(QCamera::Error)), this, SLOT(error(QCamera::Error)));
connect(m_camera, SIGNAL(lockStatusChanged(QCamera::LockStatus,QCamera::LockChangeReason)), this, SLOT(lockStatusChanged(QCamera::LockStatus,QCamera::LockChangeReason)));
// Own video output drawing that shows camera view finder pictures
//! [0]
QMediaService* ms = m_camera->service();
QVideoRendererControl* vrc = ms->requestControl<QVideoRendererControl*>();
m_myVideoSurface = new MyVideoSurface(this,this,this);
vrc->setSurface(m_myVideoSurface);
//! [0]
// Image capturer
m_stillImageCapture = new QCameraImageCapture(m_camera);
connect(m_stillImageCapture, SIGNAL(imageCaptured(int,QImage)), this, SLOT(imageCaptured(int,QImage)));
// Start camera
if (m_camera->state() == QCamera::ActiveState) {
m_camera->stop();
}
m_videoWidget->show();
m_camera->start();
showViewFinder = true;
}
void CameraExample::mousePressEvent(QMouseEvent *event)
{
QMainWindow::mousePressEvent(event);
if (pictureCaptured) {
// Starting view finder
pictureCaptured = false;
m_stackedWidget->setCurrentIndex(0);
if (m_myVideoSurface) {
showViewFinder = true;
}
}
}
void CameraExample::searchAndLock()
{
m_focusing = false;
m_focusMessage.clear();
if (pictureCaptured) {
// Starting view finder again
pictureCaptured = false;
m_stackedWidget->setCurrentIndex(0);
if (m_myVideoSurface) {
showViewFinder = true;
}
}
else {
// Search and lock picture (=focus)
if (m_camera->supportedLocks() & QCamera::LockFocus) {
m_focusing = true;
m_focusMessage = "Focusing...";
m_camera->searchAndLock(QCamera::LockFocus);
} else {
// No focus functionality, take picture right away
captureImage();
}
}
}
void CameraExample::lockStatusChanged(QCamera::LockStatus status, QCamera::LockChangeReason reason)
{
if (status == QCamera::Locked) {
if (reason == QCamera::LockAcquired) {
// Focus locked
m_focusMessage.clear();
m_focusing = false;
// Capture new image
captureImage();
// Unlock camera
m_camera->unlock();
} else {
if (m_focusing)
m_focusMessage = "No focus, try again";
}
} else if (status == QCamera::Unlocked && m_focusing) {
m_focusMessage = "No focus, try again";
}
}
void CameraExample::captureImage()
{
if (pictureCaptured) {
// Starting view finder again
pictureCaptured = false;
m_stackedWidget->setCurrentIndex(0);
showViewFinder = true;
}
else {
// Capturing image
showViewFinder = false;
// Get picture location where to store captured images
QString path(QDesktopServices::storageLocation(QDesktopServices::PicturesLocation));
QDir dir(path);
// Get next filename
QStringList files = dir.entryList(QStringList() << "camera_*.jpg");
int lastImage = 0;
foreach ( QString fileName, files ) {
int imgNumber = fileName.mid(7, fileName.size() - 11).toInt();
lastImage = qMax(lastImage, imgNumber);
}
// Capture image
if (m_stillImageCapture->isReadyForCapture()) {
m_imageName = QString("camera_%1.jpg").arg(lastImage+1);
m_stillImageCapture->capture(m_imageName);
}
}
}
void CameraExample::imageCaptured(int id, const QImage &preview)
{
showViewFinder = false;
m_focusing = false;
// Image captured, show it to the user
m_stackedWidget->setCurrentIndex(1);
// Get picture location
QString path(QDesktopServices::storageLocation(QDesktopServices::PicturesLocation));
m_imageName.prepend(path + "/");
m_capturedImage = preview;
// Set suitable size to the image
QSize s = m_videoWidget->size();
s = s - QSize(20, 20);
m_capturedImage = m_capturedImage.scaled(s, Qt::KeepAspectRatio, Qt::SmoothTransformation);
pictureCaptured = true;
update();
}
void CameraExample::error(QCamera::Error e)
{
switch (e) {
case QCamera::NoError:
{
break;
}
case QCamera::CameraError:
{
QMessageBox::warning(this, "QCameraExample", "General Camera error");
break;
}
case QCamera::InvalidRequestError:
{
QMessageBox::warning(this, "QCameraExample", "Camera invalid request error");
break;
}
case QCamera::ServiceMissingError:
{
QMessageBox::warning(this, "QCameraExample", "Camera service missing error");
break;
}
case QCamera::NotSupportedFeatureError :
{
QMessageBox::warning(this, "QCameraExample", "Camera not supported error");
break;
}
};
}
void CameraExample::openContactsDlg()
{
// Open dialog for showing contacts
if (!m_contactsDialog) {
if (m_capturedImage.isNull()) {
QMessageBox::information(this, "QCameraExample", "Take picture first");
return;
}
// Show dialog
m_contactsDialog = new ContactsDialog(this);
QObject::connect(m_contactsDialog, SIGNAL(contactSelected(QString)),
this, SLOT(contactSelected(QString)));
m_contactsDialog->exec();
QObject::disconnect(m_contactsDialog, SIGNAL(contactSelected(QString)),
this, SLOT(contactSelected(QString)));
delete m_contactsDialog;
m_contactsDialog = 0;
}
}
void CameraExample::contactSelected(QString phoneNumber)
{
m_phoneNumber = phoneNumber;
QTimer::singleShot(1000,this,SLOT(sendMMS()));
}
void CameraExample::sendMMS()
{
#ifdef MESSAGING_ENABLED
m_message->sendMMS(m_imageName, m_phoneNumber);
#endif
}
void CameraExample::messageStateChanged(int /*error*/)
{
}
void CameraExample::updateVideo()
{
if (showViewFinder) {
repaint();
}
}
void CameraExample::paintEvent(QPaintEvent *event)
{
//QMainWindow::paintEvent(event);
QPainter painter(this);
QRect r = this->rect();
QFont font = painter.font();
font.setPixelSize(20);
painter.setFont(font);
painter.setPen(Qt::white);
if (showViewFinder && m_myVideoSurface && m_myVideoSurface->isActive()) {
// Show view finder
m_myVideoSurface->paint(&painter);
// Paint focus message
if (!m_focusMessage.isEmpty())
painter.drawText(r, Qt::AlignCenter, m_focusMessage);
} else {
// Draw black
painter.fillRect(event->rect(), palette().background());
// Show captured image
if (pictureCaptured) {
// Paint captured image
QPoint centerPic((qAbs(r.size().width() - m_capturedImage.size().width())) / 2, (qAbs(
r.size().height() - m_capturedImage.size().height())) / 2);
painter.drawImage(centerPic, m_capturedImage);
// Paint filename
painter.drawText(r, Qt::AlignBottom | Qt::AlignCenter, m_imageName);
}
}
}
void CameraExample::messageReceived(QString phoneNumber, QString filename, QPixmap pixmap)
{
#ifdef MESSAGING_ENABLED
// MMS message received
// Check that is came from some of our contact
QContact contact;
if (m_businessCardHandling->findContact(phoneNumber, contact)) {
// Ask from user to store it as sender avatar picture into contacts
if (QMessageBox::question(
this,
"QCameraExample",
QString(
"MMS picture message received from %1. Do you want to store it as sender avatar picture?").arg(
contact.displayLabel()), QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes) {
m_businessCardHandling->storeAvatarToContact(phoneNumber, filename, pixmap);
}
}
#endif
}
|