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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Creator documentation.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Free Documentation License Usage
** Alternatively, this file may be used under the terms of the GNU Free
** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of
** this file. Please review the following information to ensure
** the GNU Free Documentation License version 1.3 requirements
** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
**
****************************************************************************/
/*!
\page qtquick-transition-editor.html
\previouspage studio-translations.html
\nextpage qtquick-timeline-view.html
\title Transition Editor
To make movement between states smooth, you can use
\uicontrol {Transition Editor} to animate the changes between
states.
First, you need to \l{Adding States}{add states} in the \l States view
and \l{Specifying Component Properties}{edit some properties} that can be
animated, such as colors or numbers, in the \l Properties view. For example,
you can animate the changes in the position of a component.
\image qtquick-transition-editor-view.png "Transition Editor view"
In \uicontrol {Transition Editor}, you can set the start frame, end
frame, and duration for the transition of each property. You can also
set an \l{Editing Easing Curves}{easing curve} for each animation and
the maximum duration of the whole transition.
\section1 Zooming in Transition Editor
Use the slider on the toolbar to set the zooming level in
\uicontrol {Transition Editor}. Select the \inlineimage icons/zoom_small.png
and \inlineimage icons/zoom_big.png
buttons to zoom out of or into the view.
\section1 Summary of Transition Editor Toolbar Actions
\table
\header
\li Button/Field
\li Action
\li Read More
\row
\li \inlineimage icons/animation.png
\li Opens \uicontrol {Transition Settings} dialog for editing
transition settings.
\li \l{Specifying Transition Settings}
\row
\li Transition ID
\li Displays a list of transitions that you can open in
\uicontrol {Transition Editor}.
\li \l{Animating Transitions Between States}
\row
\li \inlineimage icons/curve_editor.png
\li Opens \uicontrol {Easing Curve Editor} for attaching an easing
curve to the selected transition.
\li \l{Editing Easing Curves}
\row
\li \inlineimage icons/zoom_small.png
\li \uicontrol {Zoom Out} (\key Ctrl+-): zooms out of the view.
\li \l{Zooming in Transition Editor}
\row
\li Slider
\li Sets the zooming level.
\li \l{Zooming in Transition Editor}
\row
\li \inlineimage icons/zoom_big.png
\li \uicontrol {Zoom In} (\key Ctrl++): zooms into the view.
\li \l{Zooming in Transition Editor}
\row
\li Maximum Duration
\li Specifies the maximum duration of the transition.
\li
\endtable
\section1 Animating Transitions Between States
To animate transitions:
\list 1
\li Select \uicontrol View > \uicontrol Views >
\uicontrol {Transition Editor}.
\image qmldesigner-transition-editor-startup.png "Empty Transition Editor"
\li Select the \inlineimage icons/plus.png
(\uicontrol {Add Transition}) button to add a transition. This
works only if you have added at least one state and modified at
least one property in it.
\image qtquick-transition-editor-view.png "Transition Editor view"
\li Move the blue bar next to the component or property name to set
the start and end frame of the animation of the property. Pull its
left and right edges to set the duration of the animation.
\li To attach an \l{Editing Easing Curves}{easing curve} to the
selected transition, select the \inlineimage icons/curve_editor.png
(\uicontrol {Easing Curve Editor (C)}) button.
\endlist
\section1 Specifying Transition Settings
To modify transition settings, select the \inlineimage icons/animation.png
(\uicontrol {Transition Settings (S)}) button in
\uicontrol {Transition Editor}.
\image qtquick-transition-editor-settings.png "Transition settings"
To add transitions:
\list 1
\li Select the \inlineimage icons/plus.png
(\uicontrol {Add Transition}) button.
\li In the \uicontrol {Transition ID} field, enter an ID for the
transition.
\li In the \uicontrol From field, select the state to transition from.
\li In the \uicontrol To field, select the state to transition to.
\endlist
To remove the current transition, select the \inlineimage icons/minus.png
(\uicontrol {Remove Transition}) button.
\if defined(qtcreator)
For an example of animating transitions between states, see
\l {Creating a Qt Quick Application}.
\endif
*/
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