transformDialog.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  *
   3  * $Id$
   4  *
   5  * The MIT License
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   7  * Copyright (c) 2008 BBC Research
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  10  * of this software and associated documentation files (the "Software"), to deal
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  27  * ***** END LICENSE BLOCK ***** */
  28
  29 #include <QtGui>
  30
  31 #include "transformDialog.h"
  32
  33 TransformDialog::TransformDialog(const QString &name, QWidget *parent) :
  34         QDialog(parent)
  35 {
  36         setWindowTitle(name);
  37
  38         //zoom
  39         zoomLabel = new QLabel(tr("Zoom"));
  40
  41         zoomReset = new QPushButton();
  42         zoomReset->setText(tr("Reset"));
  43         connect(zoomReset, SIGNAL(clicked()), this, SLOT(resetZoom()));
  44
  45         zoomNumber = new QDoubleSpinBox;
  46         zoomNumber->setMinimum(0.1);
  47         zoomNumber->setMaximum(32);
  48         zoomNumber->setSingleStep(0.1);
  49         connect(zoomNumber, SIGNAL(valueChanged(double)), this, SLOT(zoomNumberChanged(double)));
  50
  51         zoomSlider = new QSlider;
  52         zoomSlider->setOrientation(Qt::Horizontal);
  53         zoomSlider->setMinimum(1);
  54         zoomSlider->setMaximum(320);
  55         zoomSlider->setValue(100);
  56         connect(zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(zoomSliderChanged(int)));
  57
  58         //rotation
  59         rotationLabel = new QLabel(tr("Rotation"));
  60
  61         rotationReset = new QPushButton;
  62         rotationReset->setText(tr("Reset"));
  63         connect(rotationReset, SIGNAL(clicked()), this, SLOT(resetRotation()));
  64
  65         rotationNumber = new QSpinBox;
  66         rotationNumber->setMinimum(-360);
  67         rotationNumber->setMaximum(360);
  68         rotationNumber->setValue(0);
  69         connect(rotationNumber, SIGNAL(valueChanged(int)), this, SLOT(rotationValueChanged(int)));
  70
  71         rotationSlider = new QSlider;
  72         rotationSlider->setOrientation(Qt::Horizontal);
  73         rotationSlider->setMinimum(-360);
  74         rotationSlider->setMaximum(360);
  75         rotationSlider->setValue(0);
  76         connect(rotationSlider, SIGNAL(valueChanged(int)), this, SLOT(rotationValueChanged(int)));
  77
  78         //layout
  79         QGridLayout *layout = new QGridLayout;
  80         layout->addWidget(zoomLabel, 0, 0);
  81         layout->addWidget(zoomReset, 0, 1);
  82         layout->addWidget(zoomNumber, 0, 2);
  83         layout->addWidget(zoomSlider, 0, 3);
  84
  85         layout->addWidget(rotationLabel, 1, 0);
  86         layout->addWidget(rotationReset, 1, 1);
  87         layout->addWidget(rotationNumber, 1, 2);
  88         layout->addWidget(rotationSlider, 1, 3);
  89
  90         setLayout(layout);
  91 }
  92
  93 //----------------------------------------------------------------------------------
  94 // Zoom Control
  95 void TransformDialog::resetZoom(void)
  96 {
  97
  98         zoomNumber->setValue(1.0);
  99         zoomSlider->setValue(10);
 100
 101         if (zoomRatio != 1.0) {
 102                 zoomRatio = 1.0;
 103                 emit(zoomChanged(zoomRatio));
 104         }
 105 }
 106
 107 //a number is entered into the zoom box
 108 void TransformDialog::zoomNumberChanged(double value)
 109 {
 110
 111         zoomSlider->setValue((int)(value * 10));
 112
 113         if (zoomRatio != value) {
 114                 emit(zoomChanged(value));
 115                 zoomRatio = value;
 116         }
 117 }
 118
 119 //the zoom slider is moved
 120 void TransformDialog::zoomSliderChanged(int value)
 121 {
 122
 123         float ratio = (float)value / 10.0;
 124         zoomNumber->setValue(ratio);
 125
 126         if (zoomRatio != ratio) {
 127                 emit(zoomChanged(ratio));
 128                 zoomRatio = ratio;
 129         }
 130 }
 131
 132 //----------------------------------------------------------------------------------
 133 // Rotation Control
 134 void TransformDialog::resetRotation(void)
 135 {
 136
 137         rotationNumber->setValue(0);
 138         rotationSlider->setValue(0);
 139
 140         if (rotation != 0) {
 141                 rotation = 0;
 142                 emit(rotationChanged(rotation));
 143         }
 144 }
 145
 146 //a number is entered into the zoom box, or the slider moved
 147 //these can be handles by the same function as they are both integers
 148 void TransformDialog::rotationValueChanged(int value)
 149 {
 150
 151         rotationSlider->setValue(value);
 152         rotationNumber->setValue(value);
 153
 154         if (rotation != value) {
 155                 emit(rotationChanged(value));
 156                 rotation = value;
 157         }
 158 }
 159
 160 //----------------------------------------------------------------------------------
 161 // Initialisation
 162 void TransformDialog::setZoom(float value)
 163 {
 164
 165         zoomRatio = value;
 166         zoomNumber->setValue(zoomRatio);
 167         zoomSlider->setValue((int)(zoomRatio * 10));
 168 }
 169
 170 void TransformDialog::setRotation(int value)
 171 {
 172
 173         rotation = value;
 174         rotationSlider->setValue(value);
 175         rotationNumber->setValue(value);
 176 }