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50
51#include "window.h"
52
53Window::Window(QWidget *parent)
54 : QWidget(parent),
55 m_iconSize(64, 64)
56{
57 m_ui.setupUi(this);
58 m_ui.easingCurvePicker->setIconSize(m_iconSize);
59 m_ui.easingCurvePicker->setMinimumHeight(m_iconSize.height() + 50);
60 m_ui.buttonGroup->setId(m_ui.lineRadio, 0);
61 m_ui.buttonGroup->setId(m_ui.circleRadio, 1);
62
63 QEasingCurve dummy;
64 m_ui.periodSpinBox->setValue(dummy.period());
65 m_ui.amplitudeSpinBox->setValue(dummy.amplitude());
66 m_ui.overshootSpinBox->setValue(dummy.overshoot());
67
68 connect(m_ui.easingCurvePicker, &QListWidget::currentRowChanged,
69 this, &Window::curveChanged);
70 connect(m_ui.buttonGroup, &QButtonGroup::buttonClicked,
71 this, &Window::pathChanged);
72 connect(m_ui.periodSpinBox, &QDoubleSpinBox::valueChanged,
73 this, &Window::periodChanged);
74 connect(m_ui.amplitudeSpinBox, &QDoubleSpinBox::valueChanged,
75 this, &Window::amplitudeChanged);
76 connect(m_ui.overshootSpinBox, &QDoubleSpinBox::valueChanged,
77 this, &Window::overshootChanged);
78 createCurveIcons();
79
80 QPixmap pix(QLatin1String(":/images/qt-logo.png"));
81 m_item = new PixmapItem(pix);
82 m_scene.addItem(m_item);
83 m_ui.graphicsView->setScene(&m_scene);
84
85 m_anim = new Animation(m_item, "pos");
86 m_anim->setEasingCurve(QEasingCurve::OutBounce);
87 m_ui.easingCurvePicker->setCurrentRow(int(QEasingCurve::OutBounce));
88
89 startAnimation();
90}
91
92QEasingCurve createEasingCurve(QEasingCurve::Type curveType)
93{
94 QEasingCurve curve(curveType);
95
96 if (curveType == QEasingCurve::BezierSpline) {
97 curve.addCubicBezierSegment(QPointF(0.4, 0.1), QPointF(0.6, 0.9), QPointF(1.0, 1.0));
98
99 } else if (curveType == QEasingCurve::TCBSpline) {
100 curve.addTCBSegment(QPointF(0.0, 0.0), 0, 0, 0);
101 curve.addTCBSegment(QPointF(0.3, 0.4), 0.2, 1, -0.2);
102 curve.addTCBSegment(QPointF(0.7, 0.6), -0.2, 1, 0.2);
103 curve.addTCBSegment(QPointF(1.0, 1.0), 0, 0, 0);
104 }
105
106 return curve;
107}
108
109void Window::createCurveIcons()
110{
111 QPixmap pix(m_iconSize);
112 QPainter painter(&pix);
113 QLinearGradient gradient(0,0, 0, m_iconSize.height());
114 gradient.setColorAt(0.0, QColor(240, 240, 240));
115 gradient.setColorAt(1.0, QColor(224, 224, 224));
116 QBrush brush(gradient);
117 const QMetaObject &mo = QEasingCurve::staticMetaObject;
118 QMetaEnum metaEnum = mo.enumerator(mo.indexOfEnumerator("Type"));
119 // Skip QEasingCurve::Custom
120 for (int i = 0; i < QEasingCurve::NCurveTypes - 1; ++i) {
121 painter.fillRect(QRect(QPoint(0, 0), m_iconSize), brush);
122 QEasingCurve curve = createEasingCurve((QEasingCurve::Type) i);
123 painter.setPen(QColor(0, 0, 255, 64));
124 qreal xAxis = m_iconSize.height()/1.5;
125 qreal yAxis = m_iconSize.width()/3;
126 painter.drawLine(0, xAxis, m_iconSize.width(), xAxis);
127 painter.drawLine(yAxis, 0, yAxis, m_iconSize.height());
128
129 qreal curveScale = m_iconSize.height()/2;
130
131 painter.setPen(Qt::NoPen);
132
133 // start point
134 painter.setBrush(Qt::red);
135 QPoint start(yAxis, xAxis - curveScale * curve.valueForProgress(0));
136 painter.drawRect(start.x() - 1, start.y() - 1, 3, 3);
137
138 // end point
139 painter.setBrush(Qt::blue);
140 QPoint end(yAxis + curveScale, xAxis - curveScale * curve.valueForProgress(1));
141 painter.drawRect(end.x() - 1, end.y() - 1, 3, 3);
142
143 QPainterPath curvePath;
144 curvePath.moveTo(start);
145 for (qreal t = 0; t <= 1.0; t+=1.0/curveScale) {
146 QPoint to;
147 to.setX(yAxis + curveScale * t);
148 to.setY(xAxis - curveScale * curve.valueForProgress(t));
149 curvePath.lineTo(to);
150 }
151 painter.setRenderHint(QPainter::Antialiasing, true);
152 painter.strokePath(curvePath, QColor(32, 32, 32));
153 painter.setRenderHint(QPainter::Antialiasing, false);
154 QListWidgetItem *item = new QListWidgetItem;
155 item->setIcon(QIcon(pix));
156 item->setText(metaEnum.key(i));
157 m_ui.easingCurvePicker->addItem(item);
158 }
159}
160
161void Window::startAnimation()
162{
163 m_anim->setStartValue(QPointF(0, 0));
164 m_anim->setEndValue(QPointF(100, 100));
165 m_anim->setDuration(2000);
166 m_anim->setLoopCount(-1); // forever
167 m_anim->start();
168}
169
170void Window::curveChanged(int row)
171{
172 QEasingCurve::Type curveType = (QEasingCurve::Type)row;
173 m_anim->setEasingCurve(createEasingCurve(curveType));
174 m_anim->setCurrentTime(0);
175
176 bool isElastic = curveType >= QEasingCurve::InElastic && curveType <= QEasingCurve::OutInElastic;
177 bool isBounce = curveType >= QEasingCurve::InBounce && curveType <= QEasingCurve::OutInBounce;
178 m_ui.periodSpinBox->setEnabled(isElastic);
179 m_ui.amplitudeSpinBox->setEnabled(isElastic || isBounce);
180 m_ui.overshootSpinBox->setEnabled(curveType >= QEasingCurve::InBack && curveType <= QEasingCurve::OutInBack);
181}
182
183void Window::pathChanged(QAbstractButton *button)
184{
185 const int index = m_ui.buttonGroup->id(button);
186 m_anim->setPathType(Animation::PathType(index));
187}
188
189void Window::periodChanged(double value)
190{
191 QEasingCurve curve = m_anim->easingCurve();
192 curve.setPeriod(value);
193 m_anim->setEasingCurve(curve);
194}
195
196void Window::amplitudeChanged(double value)
197{
198 QEasingCurve curve = m_anim->easingCurve();
199 curve.setAmplitude(value);
200 m_anim->setEasingCurve(curve);
201}
202
203void Window::overshootChanged(double value)
204{
205 QEasingCurve curve = m_anim->easingCurve();
206 curve.setOvershoot(value);
207 m_anim->setEasingCurve(curve);
208}
209
210