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Prevent easing example warnings.

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examples/widgets/animation/easing was spitting out a lot of
"QEasingCurve: Invalid tcb curve" warnings.
The reason was that in case of the TCP curve we do not provide
defaults.

The function createEasingCurve() now provides reasonable values
for the custom curves to show what is possible and how to use them.

Change-Id: I880d8d0f0ce2872ce2019f7d2e000f4c4ce136e2
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>
This commit is contained in:
Thomas Hartmann 2012-11-21 11:53:45 +01:00 committed by The Qt Project
parent 601d99d062
commit 02c110e989
1 changed files with 19 additions and 2 deletions
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21
examples/widgets/animation/easing/window.cpp
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@ -75,6 +75,23 @@ Window::Window(QWidget *parent)
startAnimation(); startAnimation();
} }
QEasingCurve createEasingCurve(QEasingCurve::Type curveType)
{
QEasingCurve curve(curveType);
if (curveType == QEasingCurve::BezierSpline) {
curve.addCubicBezierSegment(QPointF(0.4, 0.1), QPointF(0.6, 0.9), QPointF(1.0, 1.0));
} else if (curveType == QEasingCurve::TCBSpline) {
curve.addTCBSegment(QPointF(0.0, 0.0), 0, 0, 0);
curve.addTCBSegment(QPointF(0.3, 0.4), 0.2, 1, -0.2);
curve.addTCBSegment(QPointF(0.7, 0.6), -0.2, 1, 0.2);
curve.addTCBSegment(QPointF(1.0, 1.0), 0, 0, 0);
}
return curve;
}
void Window::createCurveIcons() void Window::createCurveIcons()
{ {
QPixmap pix(m_iconSize); QPixmap pix(m_iconSize);
@ -88,7 +105,7 @@ void Window::createCurveIcons()
// Skip QEasingCurve::Custom // Skip QEasingCurve::Custom
for (int i = 0; i < QEasingCurve::NCurveTypes - 1; ++i) { for (int i = 0; i < QEasingCurve::NCurveTypes - 1; ++i) {
painter.fillRect(QRect(QPoint(0, 0), m_iconSize), brush); painter.fillRect(QRect(QPoint(0, 0), m_iconSize), brush);
QEasingCurve curve((QEasingCurve::Type)i); QEasingCurve curve = createEasingCurve((QEasingCurve::Type) i);
painter.setPen(QColor(0, 0, 255, 64)); painter.setPen(QColor(0, 0, 255, 64));
qreal xAxis = m_iconSize.height()/1.5; qreal xAxis = m_iconSize.height()/1.5;
qreal yAxis = m_iconSize.width()/3; qreal yAxis = m_iconSize.width()/3;
@ -139,7 +156,7 @@ void Window::startAnimation()
void Window::curveChanged(int row) void Window::curveChanged(int row)
{ {
QEasingCurve::Type curveType = (QEasingCurve::Type)row; QEasingCurve::Type curveType = (QEasingCurve::Type)row;
m_anim->setEasingCurve(curveType); m_anim->setEasingCurve(createEasingCurve(curveType));
m_anim->setCurrentTime(0); m_anim->setCurrentTime(0);
bool isElastic = curveType >= QEasingCurve::InElastic && curveType <= QEasingCurve::OutInElastic; bool isElastic = curveType >= QEasingCurve::InElastic && curveType <= QEasingCurve::OutInElastic;