cgit.sxemacs.org Git - harmattan/cameraplus/blob - qml/CameraPage.qml

   1 // -*- qml -*-
   2
   3 /*!
   4  * This file is part of CameraPlus.
   5  *
   6  * Copyright (C) 2012 Mohammed Sameer <msameer@foolab.org>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  21  */
  22
  23 import QtQuick 1.1
  24 import com.nokia.meego 1.1
  25 import QtCamera 1.0
  26 import CameraPlus 1.0
  27 import QtMobility.systeminfo 1.2
  28
  29 Page {
  30         id: page
  31
  32         property alias standbyWidget: standby
  33
  34         property bool needsPipeline: true
  35         property int policyMode: CameraResources.None
  36
  37         signal batteryLow
  38
  39         Component.onCompleted: {
  40                 if (Qt.application.active && needsPipeline) {
  41                         resourcePolicy.acquire(page.policyMode);
  42                 }
  43         }
  44
  45         onStatusChanged: {
  46                 if (Qt.application.active && status == PageStatus.Activating) {
  47                         resourcePolicy.acquire(page.policyMode);
  48                 }
  49         }
  50 /*
  51         onStatusChanged: {
  52                 if (status == PageStatus.Active && !page.needsPipeline) {
  53                         cam.stop();
  54                 }
  55         }
  56 */
  57
  58         onPolicyModeChanged: {
  59                 if (Qt.application.active) {
  60                         resourcePolicy.acquire(page.policyMode);
  61                 }
  62         }
  63
  64         function handlePipeline() {
  65                 if (!Qt.application.active) {
  66                         // TODO: force if we lost resources ?
  67                         cam.stop();
  68                 }
  69                 else if (resourcePolicy.acquired && page.needsPipeline && !cam.running) {
  70                         // TODO: error
  71                         cam.start();
  72                 }
  73                 else if (!resourcePolicy.acquired) {
  74                         // TODO: force
  75                         cam.stop();
  76                 }
  77         }
  78
  79         Connections {
  80                 target: resourcePolicy
  81                 onAcquiredChanged: handlePipeline();
  82         }
  83
  84         Connections {
  85                 target: Qt.application
  86                 onActiveChanged: {
  87                         if (!Qt.application.active) {
  88                                 // This is a noop if camera is not
  89                                 // idle so calling it will not hurt
  90                                 if (cam.stop()) {
  91                                         resourcePolicy.acquire(CameraResources.None);
  92                                 }
  93                         }
  94                         else if (page.needsPipeline) {
  95                                 resourcePolicy.acquire(page.policyMode);
  96                         }
  97                 }
  98         }
  99
 100         Connections {
 101                 target: cam
 102                 onIdleChanged: {
 103                         if (cam.idle && !Qt.application.active) {
 104                                 cam.stop();
 105                                 resourcePolicy.acquire(CameraResources.None);
 106                         }
 107 /*
 108                         else if (cam.idle && !page.needsPipeline) {
 109                                 cam.stop();
 110                         }
 111 */
 112                 }
 113         }
 114
 115         Rectangle {
 116                 // TODO: color
 117                 // TODO: fade out transition
 118                 // TODO: there is a toolbar visible on the first startup
 119                 id: standby
 120                 color: "black"
 121                 anchors.fill: parent
 122                 visible: !Qt.application.active || !cam.running || !resourcePolicy.acquired
 123                 Image {
 124                         source: "image://theme/icon-l-camera-standby"
 125                         anchors.centerIn: parent
 126                 }
 127         }
 128
 129         property Camera cam: null
 130         property bool controlsVisible: cam.running && !standby.visible
 131
 132         anchors.fill: parent
 133
 134         property alias previewAnimationRunning: preview.animationRunning
 135
 136         function setPreview(image) {
 137                 preview.setPreview(image);
 138         }
 139
 140         ModeButton {
 141                 anchors.bottom: parent.bottom
 142                 anchors.right: parent.right
 143                 anchors.rightMargin: 20
 144                 anchors.bottomMargin: 20
 145                 visible: controlsVisible
 146         }
 147
 148         PreviewImage {
 149                 id: preview
 150         }
 151
 152         ZoomSlider {
 153                 id: zoom
 154                 camera: cam
 155                 anchors.top: parent.top
 156                 anchors.topMargin: 0
 157                 anchors.horizontalCenter: parent.horizontalCenter
 158                 visible: controlsVisible
 159         }
 160
 161         function checkBattery() {
 162                 // We are fine if we are connected to the charger:
 163                 if (batteryMonitor.chargingState == BatteryInfo.Charging) {
 164                         return true;
 165                 }
 166
 167                 // If we have enough battery then we are fine:
 168                 if (batteryMonitor.batteryStatus > BatteryInfo.BatteryCritical) {
 169                         return true;
 170                 }
 171
 172                 return false;
 173         }
 174
 175         BatteryInfo {
 176                 id: batteryMonitor
 177                 monitorChargingStateChanges: cam.running
 178                 monitorBatteryStatusChanges: cam.running
 179
 180                 onChargingStateChanged: {
 181                         if (!checkBattery()) {
 182                                 parent.batteryLow();
 183                         }
 184                 }
 185
 186                 onBatteryStatusChanged:  {
 187                         if (!checkBattery()) {
 188                                 parent.batteryLow();
 189                         }
 190                 }
 191         }
 192 }