cgit.sxemacs.org Git - harmattan/cameraplus/blob - qml/FocusReticle.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 QtCamera 1.0
  25 import CameraPlus 1.0
  26
  27 // TODO: keep reticle within bounds
  28 // TODO: move reticle within bounds if resolution changes
  29
  30 MouseArea {
  31         property int cafStatus: AutoFocus.None
  32         property int status: AutoFocus.None
  33         property variant topLeft: mapFromItem(cam, cam.renderArea.x, cam.renderArea.y)
  34         property variant bottomRight: mapFromItem(cam, cam.renderArea.x + cam.renderArea.width, cam.renderArea.y + cam.renderArea.height)
  35         id: mouse
  36
  37         // A 100x100 central "rectangle"
  38         property variant centerRect: Qt.rect((mouse.width / 2 - 50), (mouse.height / 2) - 50, 100, 100);
  39
  40         property alias touchMode: reticle.touchMode
  41
  42         x: topLeft.x
  43         y: topLeft.y
  44         width: bottomRight.x - topLeft.x
  45         height: bottomRight.y - topLeft.y
  46
  47         onStatusChanged: {
  48                 if (status != AutoFocus.Running) {
  49                         reticle.visible = true;
  50                 }
  51         }
  52
  53         function predictColor(caf, status) {
  54                 if (status == AutoFocus.Success) {
  55                         return "steelblue";
  56                 }
  57                 else if (status == AutoFocus.Fail) {
  58                         return "red";
  59                 }
  60                 else if (status == AutoFocus.Running) {
  61                         return "white";
  62                 }
  63                 else if (caf == AutoFocus.Success) {
  64                         return "steelblue";
  65                 }
  66                 else {
  67                         return "white";
  68                 }
  69         }
  70
  71         function moveRect(x, y) {
  72                 // TODO: don't put reticle outside area
  73                 x = x - (reticle.width / 2)
  74                 y = y - (reticle.height / 2)
  75
  76                 reticle.x = x;
  77                 reticle.y = y;
  78         }
  79
  80         function moveToCenterIfNeeded(x, y) {
  81                 if (x >= centerRect.x && y >= centerRect.y &&
  82                     x <= centerRect.x + centerRect.width &&
  83                     y <= centerRect.y + centerRect.height) {
  84                         reticle.x = reticle.center.x
  85                         reticle.y = reticle.center.y
  86                 }
  87         }
  88
  89         onPressed: moveRect(mouse.x, mouse.y);
  90         onPositionChanged: moveRect(mouse.x, mouse.y);
  91
  92         onReleased: moveToCenterIfNeeded(mouse.x, mouse.y);
  93
  94         onXChanged: {
  95                 // TODO:
  96 //                moveRect(reticle.x, reticle.y);
  97         }
  98
  99         FocusRectangle {
 100                 id: reticle
 101                 property variant center: Qt.point((mouse.width - width) / 2, (mouse.height - height) / 2);
 102                 property bool touchMode: !(reticle.x == center.x && reticle.y == center.y)
 103
 104                 scale: mouse.pressed ? 0.6 :  touchMode ? 0.8 : 1.0
 105
 106                 width: 250
 107                 height: 150
 108                 x: center.x
 109                 y: center.y
 110
 111                 color: predictColor(cafStatus, status);
 112
 113                 onXChanged: {
 114                         if (mouse.pressed) {
 115                                 return;
 116                         }
 117
 118 //                        console.log(x);
 119 //                        console.log(x);
 120                 }
 121         }
 122
 123         Timer {
 124                 interval: 500
 125                 running: status == AutoFocus.Running
 126                 triggeredOnStart: true
 127                 repeat: true
 128                 onTriggered: reticle.visible = !reticle.visible
 129         }
 130 }