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Svenn-Arne Dragly 50cfbd6112 Animation: Fix case where QEasingCurve::valueForProgress returns nan 
Previously, we would divide by zero in BezierEase::findTForX if factorT3
was zero when solving the cubic equation.

This change fixes the problem by adding solutions for the special cases
where the cubic equation can be reduced to a quadratic or linear
equation.

This change also adds tests that cover cases where the equation becomes
quadratic, linear or invalid.

Task-number: QTBUG-67061
Change-Id: I2b59f7e0392eb807663c3c8927509fd8b226ebc7
Reviewed-by: Christian Stromme <christian.stromme@qt.io>
2018-03-26 15:53:10 +00:00
..
auto Animation: Fix case where QEasingCurve::valueForProgress returns nan 2018-03-26 15:53:10 +00:00
baselineserver Allow QImage with more than 2GByte of image data 2017-07-08 08:17:13 +00:00
benchmarks Make a benchmark out of tst_QObjectPerformance::emitToManyReceivers 2018-03-07 19:43:52 +00:00
global tst_bic: Add linux-gcc-ia32 bic data for QtXml 2013-01-16 08:25:28 +01:00
manual Manual tablet test: Draw crosshairs when tablet pen is close 2018-03-14 14:15:45 +00:00
shared Modernize the "regularexpression" feature 2018-03-20 08:19:25 +00:00
README Doc: Fix references to Qt Test 2013-01-30 01:35:06 +01:00
tests.pro Build examples and tests only if their requirements are met 2017-03-22 15:55:55 +00:00

README 

This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.

Linux X11:

   * The user must be logged in to an active desktop; you can't run the
     autotests without a valid DISPLAY that allows X11 connections.

   * The tests are run against a KDE3 or KDE4 desktop.

   * Window manager uses "click to focus", and not "focus follows mouse". Many
     tests move the mouse cursor around and expect this to not affect focus
     and activation.

   * Disable "click to activate", i.e., when a window is opened, the window
     manager should automatically activate it (give it input focus) and not
     wait for the user to click the window.