centralize and fixup example sources install targets

This follows suit with aeb036e in qtbase.

Change-Id: Ie8580d0a1f38ab9858b0e44c9f99bdc552a1752a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: hjk <qthjk@ovi.com>

1 files changed, 435 insertions, 0 deletions

diff --git a/examples/multimediawidgets/camera/camera.cpp b/examples/multimediawidgets/camera/camera.cpp
new file mode 100644
index 000000000..c270d5585
--- /dev/null
+++ b/examples/multimediawidgets/camera/camera.cpp
@@ -0,0 +1,435 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples 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 Digia Plc 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 "camera.h"
+#include "ui_camera.h"
+#include "videosettings.h"
+#include "imagesettings.h"
+
+#include <QMediaService>
+#include <QMediaRecorder>
+#include <QCameraViewfinder>
+
+#include <QMessageBox>
+#include <QPalette>
+
+#include <QtWidgets>
+
+#if (defined(Q_WS_MAEMO_6)) && QT_VERSION >= 0x040700
+#define HAVE_CAMERA_BUTTONS
+#endif
+
+Camera::Camera(QWidget *parent) :
+    QMainWindow(parent),
+    ui(new Ui::Camera),
+    camera(0),
+    imageCapture(0),
+    mediaRecorder(0),
+    isCapturingImage(false),
+    applicationExiting(false)
+{
+    ui->setupUi(this);
+
+    //Camera devices:
+    QByteArray cameraDevice;
+
+    QActionGroup *videoDevicesGroup = new QActionGroup(this);
+    videoDevicesGroup->setExclusive(true);
+    foreach(const QByteArray &deviceName, QCamera::availableDevices()) {
+        QString description = camera->deviceDescription(deviceName);
+        QAction *videoDeviceAction = new QAction(description, videoDevicesGroup);
+        videoDeviceAction->setCheckable(true);
+        videoDeviceAction->setData(QVariant(deviceName));
+        if (cameraDevice.isEmpty()) {
+            cameraDevice = deviceName;
+            videoDeviceAction->setChecked(true);
+        }
+        ui->menuDevices->addAction(videoDeviceAction);
+    }
+
+    connect(videoDevicesGroup, SIGNAL(triggered(QAction*)), SLOT(updateCameraDevice(QAction*)));
+    connect(ui->captureWidget, SIGNAL(currentChanged(int)), SLOT(updateCaptureMode()));
+
+#ifdef HAVE_CAMERA_BUTTONS
+    ui->lockButton->hide();
+#endif
+
+    setCamera(cameraDevice);
+}
+
+Camera::~Camera()
+{
+    delete mediaRecorder;
+    delete imageCapture;
+    delete camera;
+}
+
+void Camera::setCamera(const QByteArray &cameraDevice)
+{
+    delete imageCapture;
+    delete mediaRecorder;
+    delete camera;
+
+    if (cameraDevice.isEmpty())
+        camera = new QCamera;
+    else
+        camera = new QCamera(cameraDevice);
+
+    connect(camera, SIGNAL(stateChanged(QCamera::State)), this, SLOT(updateCameraState(QCamera::State)));
+    connect(camera, SIGNAL(error(QCamera::Error)), this, SLOT(displayCameraError()));
+
+    mediaRecorder = new QMediaRecorder(camera);
+    connect(mediaRecorder, SIGNAL(stateChanged(QMediaRecorder::State)), this, SLOT(updateRecorderState(QMediaRecorder::State)));
+
+    imageCapture = new QCameraImageCapture(camera);
+
+    connect(mediaRecorder, SIGNAL(durationChanged(qint64)), this, SLOT(updateRecordTime()));
+    connect(mediaRecorder, SIGNAL(error(QMediaRecorder::Error)), this, SLOT(displayRecorderError()));
+
+    mediaRecorder->setMetaData(QMediaMetaData::Title, QVariant(QLatin1String("Test Title")));
+
+    connect(ui->exposureCompensation, SIGNAL(valueChanged(int)), SLOT(setExposureCompensation(int)));
+
+    camera->setViewfinder(ui->viewfinder);
+
+    updateCameraState(camera->state());
+    updateLockStatus(camera->lockStatus(), QCamera::UserRequest);
+    updateRecorderState(mediaRecorder->state());
+
+    connect(imageCapture, SIGNAL(readyForCaptureChanged(bool)), this, SLOT(readyForCapture(bool)));
+    connect(imageCapture, SIGNAL(imageCaptured(int,QImage)), this, SLOT(processCapturedImage(int,QImage)));
+    connect(imageCapture, SIGNAL(imageSaved(int,QString)), this, SLOT(imageSaved(int,QString)));
+
+    connect(camera, SIGNAL(lockStatusChanged(QCamera::LockStatus, QCamera::LockChangeReason)),
+            this, SLOT(updateLockStatus(QCamera::LockStatus, QCamera::LockChangeReason)));
+
+    ui->captureWidget->setTabEnabled(0, (camera->isCaptureModeSupported(QCamera::CaptureStillImage)));
+    ui->captureWidget->setTabEnabled(1, (camera->isCaptureModeSupported(QCamera::CaptureVideo)));
+
+    updateCaptureMode();
+    camera->start();
+}
+
+void Camera::keyPressEvent(QKeyEvent * event)
+{
+    if (event->isAutoRepeat())
+        return;
+
+    switch (event->key()) {
+    case Qt::Key_CameraFocus:
+        displayViewfinder();
+        camera->searchAndLock();
+        event->accept();
+        break;
+    case Qt::Key_Camera:
+        if (camera->captureMode() == QCamera::CaptureStillImage) {
+            takeImage();
+        } else {
+            if (mediaRecorder->state() == QMediaRecorder::RecordingState)
+                stop();
+            else
+                record();
+        }
+        event->accept();
+        break;
+    default:
+        QMainWindow::keyPressEvent(event);
+    }
+}
+
+void Camera::keyReleaseEvent(QKeyEvent *event)
+{
+    if (event->isAutoRepeat())
+        return;
+
+    switch (event->key()) {
+    case Qt::Key_CameraFocus:
+        camera->unlock();
+        break;
+    default:
+        QMainWindow::keyReleaseEvent(event);
+    }
+}
+
+void Camera::updateRecordTime()
+{
+    QString str = QString("Recorded %1 sec").arg(mediaRecorder->duration()/1000);
+    ui->statusbar->showMessage(str);
+}
+
+void Camera::processCapturedImage(int requestId, const QImage& img)
+{
+    Q_UNUSED(requestId);
+    QImage scaledImage = img.scaled(ui->viewfinder->size(),
+                                    Qt::KeepAspectRatio,
+                                    Qt::SmoothTransformation);
+
+    ui->lastImagePreviewLabel->setPixmap(QPixmap::fromImage(scaledImage));
+
+    // Display captured image for 4 seconds.
+    displayCapturedImage();
+    QTimer::singleShot(4000, this, SLOT(displayViewfinder()));
+}
+
+void Camera::configureCaptureSettings()
+{
+    switch (camera->captureMode()) {
+    case QCamera::CaptureStillImage:
+        configureImageSettings();
+        break;
+    case QCamera::CaptureVideo:
+        configureVideoSettings();
+        break;
+    default:
+        break;
+    }
+}
+
+void Camera::configureVideoSettings()
+{
+    VideoSettings settingsDialog(mediaRecorder);
+
+    settingsDialog.setAudioSettings(audioSettings);
+    settingsDialog.setVideoSettings(videoSettings);
+    settingsDialog.setFormat(videoContainerFormat);
+
+    if (settingsDialog.exec()) {
+        audioSettings = settingsDialog.audioSettings();
+        videoSettings = settingsDialog.videoSettings();
+        videoContainerFormat = settingsDialog.format();
+
+        mediaRecorder->setEncodingSettings(
+                    audioSettings,
+                    videoSettings,
+                    videoContainerFormat);
+    }
+}
+
+void Camera::configureImageSettings()
+{
+    ImageSettings settingsDialog(imageCapture);
+
+    settingsDialog.setImageSettings(imageSettings);
+
+    if (settingsDialog.exec()) {
+        imageSettings = settingsDialog.imageSettings();
+        imageCapture->setEncodingSettings(imageSettings);
+    }
+}
+
+void Camera::record()
+{
+    mediaRecorder->record();
+    updateRecordTime();
+}
+
+void Camera::pause()
+{
+    mediaRecorder->pause();
+}
+
+void Camera::stop()
+{
+    mediaRecorder->stop();
+}
+
+void Camera::setMuted(bool muted)
+{
+    mediaRecorder->setMuted(muted);
+}
+
+void Camera::toggleLock()
+{
+    switch (camera->lockStatus()) {
+    case QCamera::Searching:
+    case QCamera::Locked:
+        camera->unlock();
+        break;
+    case QCamera::Unlocked:
+        camera->searchAndLock();
+    }
+}
+
+void Camera::updateLockStatus(QCamera::LockStatus status, QCamera::LockChangeReason reason)
+{
+    QColor indicationColor = Qt::black;
+
+    switch (status) {
+    case QCamera::Searching:
+        indicationColor = Qt::yellow;
+        ui->statusbar->showMessage(tr("Focusing..."));
+        ui->lockButton->setText(tr("Focusing..."));
+        break;
+    case QCamera::Locked:
+        indicationColor = Qt::darkGreen;        
+        ui->lockButton->setText(tr("Unlock"));
+        ui->statusbar->showMessage(tr("Focused"), 2000);
+        break;
+    case QCamera::Unlocked:
+        indicationColor = reason == QCamera::LockFailed ? Qt::red : Qt::black;
+        ui->lockButton->setText(tr("Focus"));
+        if (reason == QCamera::LockFailed)
+            ui->statusbar->showMessage(tr("Focus Failed"), 2000);
+    }
+
+    QPalette palette = ui->lockButton->palette();
+    palette.setColor(QPalette::ButtonText, indicationColor);
+    ui->lockButton->setPalette(palette);
+}
+
+void Camera::takeImage()
+{
+    isCapturingImage = true;
+    imageCapture->capture();
+}
+
+void Camera::startCamera()
+{
+    camera->start();
+}
+
+void Camera::stopCamera()
+{
+    camera->stop();
+}
+
+void Camera::updateCaptureMode()
+{
+    int tabIndex = ui->captureWidget->currentIndex();
+    QCamera::CaptureModes captureMode = tabIndex == 0 ? QCamera::CaptureStillImage : QCamera::CaptureVideo;
+
+    if (camera->isCaptureModeSupported(captureMode))
+        camera->setCaptureMode(captureMode);
+}
+
+void Camera::updateCameraState(QCamera::State state)
+{
+    switch (state) {    
+    case QCamera::ActiveState:
+        ui->actionStartCamera->setEnabled(false);
+        ui->actionStopCamera->setEnabled(true);
+        ui->captureWidget->setEnabled(true);
+        ui->actionSettings->setEnabled(true);
+        break;
+    case QCamera::UnloadedState:
+    case QCamera::LoadedState:
+        ui->actionStartCamera->setEnabled(true);
+        ui->actionStopCamera->setEnabled(false);
+        ui->captureWidget->setEnabled(false);
+        ui->actionSettings->setEnabled(false);
+    }
+}
+
+void Camera::updateRecorderState(QMediaRecorder::State state)
+{
+    switch (state) {
+    case QMediaRecorder::StoppedState:
+        ui->recordButton->setEnabled(true);
+        ui->pauseButton->setEnabled(true);
+        ui->stopButton->setEnabled(false);
+        break;
+    case QMediaRecorder::PausedState:
+        ui->recordButton->setEnabled(true);
+        ui->pauseButton->setEnabled(false);
+        ui->stopButton->setEnabled(true);
+        break;
+    case QMediaRecorder::RecordingState:
+        ui->recordButton->setEnabled(false);
+        ui->pauseButton->setEnabled(true);
+        ui->stopButton->setEnabled(true);
+        break;
+    }
+}
+
+void Camera::setExposureCompensation(int index)
+{
+    camera->exposure()->setExposureCompensation(index*0.5);
+}
+
+void Camera::displayRecorderError()
+{
+    QMessageBox::warning(this, tr("Capture error"), mediaRecorder->errorString());
+}
+
+void Camera::displayCameraError()
+{
+    QMessageBox::warning(this, tr("Camera error"), camera->errorString());
+}
+
+void Camera::updateCameraDevice(QAction *action)
+{
+    setCamera(action->data().toByteArray());
+}
+
+void Camera::displayViewfinder()
+{
+    ui->stackedWidget->setCurrentIndex(0);
+}
+
+void Camera::displayCapturedImage()
+{
+    ui->stackedWidget->setCurrentIndex(1);
+}
+
+void Camera::readyForCapture(bool ready)
+{
+    ui->takeImageButton->setEnabled(ready);
+}
+
+void Camera::imageSaved(int id, const QString &fileName)
+{
+    Q_UNUSED(id);
+    Q_UNUSED(fileName);
+
+    isCapturingImage = false;
+    if (applicationExiting)
+        close();
+}
+
+void Camera::closeEvent(QCloseEvent *event)
+{
+    if (isCapturingImage) {
+        setEnabled(false);
+        applicationExiting = true;
+        event->ignore();
+    } else {
+        event->accept();
+    }
+}