cgit.sxemacs.org Git - harmattan/cameraplus/blob - imports/mode.cpp

   1 #include "mode.h"
   2 #include "qtcammode.h"
   3 #include "camera.h"
   4 #include "qtcamdevice.h"
   5 #include "previewprovider.h"
   6
   7 Mode::Mode(QObject *parent) :
   8   QObject(parent),
   9   m_cam(0),
  10   m_mode(0),
  11   m_seq(0) {
  12
  13 }
  14
  15 Mode::~Mode() {
  16   m_cam = 0;
  17   m_mode = 0;
  18 }
  19
  20 Camera *Mode::camera() {
  21   return m_cam;
  22 }
  23
  24 void Mode::setCamera(Camera *camera) {
  25   if (camera == m_cam) {
  26     return;
  27   }
  28
  29   if (m_cam) {
  30     QObject::disconnect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
  31     QObject::disconnect(m_cam, SIGNAL(deviceChanged()), this, SIGNAL(isReadyChanged()));
  32   }
  33
  34   m_cam = camera;
  35
  36   if (m_cam) {
  37     QObject::connect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
  38     QObject::connect(m_cam, SIGNAL(deviceChanged()), this, SIGNAL(isReadyChanged()));
  39   }
  40
  41   emit cameraChanged();
  42
  43   deviceChanged();
  44
  45   emit isReadyChanged();
  46 }
  47
  48 bool Mode::isActive() {
  49   return m_mode ? m_mode->isActive() : false;
  50 }
  51
  52 bool Mode::canCapture() {
  53   return m_mode ? m_mode->canCapture() : false;
  54 }
  55
  56 void Mode::deviceChanged() {
  57   if (m_mode) {
  58     QObject::disconnect(m_mode, SIGNAL(canCaptureChanged()), this, SIGNAL(canCaptureChanged()));
  59     QObject::disconnect(m_mode, SIGNAL(saved(const QString&)),
  60                         this, SIGNAL(saved(const QString&)));
  61     QObject::disconnect(m_mode, SIGNAL(previewAvailable(const QImage&, const QString&)),
  62                         this, SLOT(gotPreview(const QImage&, const QString&)));
  63     QObject::disconnect(m_mode, SIGNAL(activeChanged()), this, SIGNAL(activeChanged()));
  64     QObject::disconnect(m_mode, SIGNAL(activeChanged()), this, SIGNAL(canCaptureChanged()));
  65     QObject::disconnect(m_cam->device(), SIGNAL(idleStateChanged(bool)),
  66                         this, SIGNAL(canCaptureChanged()));
  67     QObject::disconnect(m_cam->device(), SIGNAL(runningStateChanged(bool)),
  68                         this, SIGNAL(canCaptureChanged()));
  69
  70     preChangeMode();
  71   }
  72
  73   if (!m_cam || !m_cam->device()) {
  74     return;
  75   }
  76
  77   changeMode();
  78
  79   if (m_mode) {
  80     QObject::connect(m_mode, SIGNAL(canCaptureChanged()), this, SIGNAL(canCaptureChanged()));
  81     QObject::connect(m_mode, SIGNAL(saved(const QString&)), this, SIGNAL(saved(const QString&)));
  82     QObject::connect(m_mode, SIGNAL(previewAvailable(const QImage&, const QString&)),
  83                      this, SLOT(gotPreview(const QImage&, const QString&)));
  84     QObject::connect(m_mode, SIGNAL(activeChanged()), this, SIGNAL(activeChanged()));
  85     QObject::connect(m_mode, SIGNAL(activeChanged()), this, SIGNAL(canCaptureChanged()));
  86     QObject::connect(m_cam->device(), SIGNAL(idleStateChanged(bool)),
  87                      this, SIGNAL(canCaptureChanged()));
  88     QObject::connect(m_cam->device(), SIGNAL(runningStateChanged(bool)),
  89                      this, SIGNAL(canCaptureChanged()));
  90
  91     postChangeMode();
  92   }
  93
  94   emit canCaptureChanged();
  95   emit activeChanged();
  96 }
  97
  98 void Mode::gotPreview(const QImage& image, const QString& fileName) {
  99   PreviewProvider::instance()->setPreview(image);
 100
 101   // HACK: QML insists on caching the images.
 102   QString url = QString("image://preview/%1").arg(m_seq);
 103   ++m_seq;
 104
 105   emit previewAvailable(url, fileName);
 106 }
 107
 108 bool Mode::isReady() const {
 109   return m_mode;
 110 }