diff options
Diffstat (limited to 'doc/src/declarative/tutorial3.qdoc')
-rw-r--r-- | doc/src/declarative/tutorial3.qdoc | 126 |
1 files changed, 88 insertions, 38 deletions
diff --git a/doc/src/declarative/tutorial3.qdoc b/doc/src/declarative/tutorial3.qdoc index 533e179..3ac22a1 100644 --- a/doc/src/declarative/tutorial3.qdoc +++ b/doc/src/declarative/tutorial3.qdoc @@ -12,44 +12,86 @@ We want our text to jump at the bottom of the screen and become red when clicked Here is the QML code: \code -<Rect id="Page" width="480" height="200" color="white"> - <Text id="HelloText" text="Hello world!" font.size="24" font.bold="true" y="30" anchors.horizontalCenter="{Page.horizontalCenter}"> - <states> - <State name="down" when="{MouseRegion.pressed == true}"> - <SetProperty target="{HelloText}" property="y" value="160"/> - <SetProperty target="{HelloText}" property="color" value="red"/> - </State> - </states> - <transitions> - <Transition fromState="*" toState="down" reversible="true"> - <ParallelAnimation> - <NumericAnimation properties="y" duration="500" easing="easeOutBounce"/> - <ColorAnimation duration="500"/> - </ParallelAnimation> - </Transition> - </transitions> - </Text> - <MouseRegion id="MouseRegion" anchors.fill="{HelloText}"/> - <GridLayout id="ColorPicker" x="0" anchors.bottom="{Page.bottom}" width="120" height="50" columns="3" rows="2"> - <Cell color="#ff0000"/> - <Cell color="#00ff00"/> - <Cell color="#0000ff"/> - <Cell color="#ffff00"/> - <Cell color="#00ffff"/> - <Cell color="#ff00ff"/> - </GridLayout> -</Rect> +Rect { + id: Page + width: 480 + height: 200 + color: "white" + Text { + id: HelloText + text: "Hello world!" + font.size: 24 + font.bold: true + y: 30 + anchors.horizontalCenter: Page.horizontalCenter + states: [ + State { + name: "down" + when: MouseRegion.pressed == true + SetProperty { + target: HelloText + property: "y" + value: 160 + } + SetProperty { + target: HelloText + property: "color" + value: "red" + } + } + ] + transitions: [ + Transition { + fromState: "*" + toState: "down" + reversible: true + ParallelAnimation { + NumericAnimation { + properties: "y" + duration: 500 + easing: "easeOutBounce" + } + ColorAnimation { duration: 500 } + } + } + ] + } + MouseRegion { id: MouseRegion; anchors.fill: HelloText } + GridLayout { + id: ColorPicker + x: 0 + anchors.bottom: Page.bottom + width: 120; height: 50 + rows: 2; columns: 3 + Cell { color: "#ff0000" } + Cell { color: "#00ff00" } + Cell { color: "#0000ff" } + Cell { color: "#ffff00" } + Cell { color: "#00ffff" } + Cell { color: "#ff00ff" } + } +} \endcode \section1 Walkthrough \code -<states> - <State name="down" when="{MouseRegion.pressed == true}"> - <SetProperty target="{HelloText}" property="y" value="160"/> - <SetProperty target="{HelloText}" property="color" value="red"/> - </State> -</states> +states: [ + State { + name: "down" + when: MouseRegion.pressed == true + SetProperty { + target: HelloText + property: "y" + value: 160 + } + SetProperty { + target: HelloText + property: "color" + value: "red" + } + } +] \endcode First, we create a new state \e down for our text element. This state will be activated when MouseRegion is pressed, and deactivated when it is released. @@ -57,7 +99,11 @@ First, we create a new state \e down for our text element. This state will be ac The \e down state includes a set of property changes from our implicit \e {default state} (the items as they were initially defined in the QML). Specifically, we set the \c y property of the text to 160 and the \c color to red. \code -<Transition fromState="*" toState="down" reversible="true"> +Transition { + fromState: "*" + toState: "down" + reversible: true +} \endcode Because we don't want the text to appear at the bottom instantly but rather move smoothly, we add a transition between our two states. @@ -67,10 +113,14 @@ Because we don't want the text to appear at the bottom instantly but rather move Because we want the same transition to be run in reverse when changing back from the \e down state to the default state, we set \c reversible to \c true. This is equivalent to writing the two transitions separately. \code -<ParallelAnimation> - <NumericAnimation properties="y" duration="500" easing="easeOutBounce"/> - <ColorAnimation duration="500"/> -</ParallelAnimation> +ParallelAnimation { + NumericAnimation { + properties: "y" + duration: 500 + easing: "easeOutBounce" + } + ColorAnimation { duration: 500 } +} \endcode The \c ParallelAnimation element makes sure that the two animations (color and position) will start at the same time. We could also run them one after the other by using \c SequentialAnimation instead. |