react-native/Examples/UIExplorer/js/TextExample.ios.js

593 lines
17 KiB
JavaScript

/**
* Copyright (c) 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* The examples provided by Facebook are for non-commercial testing and
* evaluation purposes only.
*
* Facebook reserves all rights not expressly granted.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* @flow
*/
'use strict';
var React = require('react');
var ReactNative = require('react-native');
var {
Image,
StyleSheet,
Text,
View,
LayoutAnimation,
} = ReactNative;
class Entity extends React.Component {
render() {
return (
<Text style={{fontWeight: '500', color: '#527fe4'}}>
{this.props.children}
</Text>
);
}
}
class AttributeToggler extends React.Component {
state = {fontWeight: 'bold', fontSize: 15};
toggleWeight = () => {
this.setState({
fontWeight: this.state.fontWeight === 'bold' ? 'normal' : 'bold'
});
};
increaseSize = () => {
this.setState({
fontSize: this.state.fontSize + 1
});
};
render() {
var curStyle = {fontWeight: this.state.fontWeight, fontSize: this.state.fontSize};
return (
<View>
<Text style={curStyle}>
Tap the controls below to change attributes.
</Text>
<Text>
<Text>See how it will even work on <Text style={curStyle}>this nested text</Text></Text>
</Text>
<Text
style={{backgroundColor: '#ffaaaa', marginTop: 5}}
onPress={this.toggleWeight}>
Toggle Weight
</Text>
<Text
style={{backgroundColor: '#aaaaff', marginTop: 5}}
onPress={this.increaseSize}>
Increase Size
</Text>
</View>
);
}
}
var AdjustingFontSize = React.createClass({
getInitialState: function() {
return {dynamicText:'', shouldRender: true,};
},
reset: function() {
LayoutAnimation.easeInEaseOut();
this.setState({
shouldRender: false,
});
setTimeout(()=>{
LayoutAnimation.easeInEaseOut();
this.setState({
dynamicText: '',
shouldRender: true,
});
}, 300);
},
addText: function() {
this.setState({
dynamicText: this.state.dynamicText + (Math.floor((Math.random() * 10) % 2) ? ' foo' : ' bar'),
});
},
removeText: function() {
this.setState({
dynamicText: this.state.dynamicText.slice(0, this.state.dynamicText.length - 4),
});
},
render: function() {
if (!this.state.shouldRender) {
return (<View/>);
}
return (
<View>
<Text lineBreakMode="tail" numberOfLines={1} style={{fontSize: 36, marginVertical:6}}>
Truncated text is baaaaad.
</Text>
<Text numberOfLines={1} adjustsFontSizeToFit={true} style={{fontSize: 40, marginVertical:6}}>
Shrinking to fit available space is much better!
</Text>
<Text adjustsFontSizeToFit={true} numberOfLines={1} style={{fontSize:30, marginVertical:6}}>
{'Add text to me to watch me shrink!' + ' ' + this.state.dynamicText}
</Text>
<Text adjustsFontSizeToFit={true} numberOfLines={4} style={{fontSize:20, marginVertical:6}}>
{'Multiline text component shrinking is supported, watch as this reeeeaaaally loooooong teeeeeeext grooooows and then shriiiinks as you add text to me! ioahsdia soady auydoa aoisyd aosdy ' + ' ' + this.state.dynamicText}
</Text>
<Text adjustsFontSizeToFit={true} numberOfLines={1} style={{marginVertical:6}}>
<Text style={{fontSize:14}}>
{'Differently sized nested elements will shrink together. '}
</Text>
<Text style={{fontSize:20}}>
{'LARGE TEXT! ' + this.state.dynamicText}
</Text>
</Text>
<View style={{flexDirection:'row', justifyContent:'space-around', marginTop: 5, marginVertical:6}}>
<Text
style={{backgroundColor: '#ffaaaa'}}
onPress={this.reset}>
Reset
</Text>
<Text
style={{backgroundColor: '#aaaaff'}}
onPress={this.removeText}>
Remove Text
</Text>
<Text
style={{backgroundColor: '#aaffaa'}}
onPress={this.addText}>
Add Text
</Text>
</View>
</View>
);
}
});
exports.title = '<Text>';
exports.description = 'Base component for rendering styled text.';
exports.displayName = 'TextExample';
exports.examples = [
{
title: 'Wrap',
render: function() {
return (
<Text>
The text should wrap if it goes on multiple lines. See, this is going to
the next line.
</Text>
);
},
}, {
title: 'Padding',
render: function() {
return (
<Text style={{padding: 10}}>
This text is indented by 10px padding on all sides.
</Text>
);
},
}, {
title: 'Font Family',
render: function() {
return (
<View>
<Text style={{fontFamily: 'Cochin'}}>
Cochin
</Text>
<Text style={{fontFamily: 'Cochin', fontWeight: 'bold'}}>
Cochin bold
</Text>
<Text style={{fontFamily: 'Helvetica'}}>
Helvetica
</Text>
<Text style={{fontFamily: 'Helvetica', fontWeight: 'bold'}}>
Helvetica bold
</Text>
<Text style={{fontFamily: 'Verdana'}}>
Verdana
</Text>
<Text style={{fontFamily: 'Verdana', fontWeight: 'bold'}}>
Verdana bold
</Text>
</View>
);
},
}, {
title: 'Font Size',
render: function() {
return (
<View>
<Text style={{fontSize: 23}}>
Size 23
</Text>
<Text style={{fontSize: 8}}>
Size 8
</Text>
</View>
);
},
}, {
title: 'Color',
render: function() {
return (
<View>
<Text style={{color: 'red'}}>
Red color
</Text>
<Text style={{color: 'blue'}}>
Blue color
</Text>
</View>
);
},
}, {
title: 'Font Weight',
render: function() {
return (
<View>
<Text style={{fontSize: 20, fontWeight: '100'}}>
Move fast and be ultralight
</Text>
<Text style={{fontSize: 20, fontWeight: '200'}}>
Move fast and be light
</Text>
<Text style={{fontSize: 20, fontWeight: 'normal'}}>
Move fast and be normal
</Text>
<Text style={{fontSize: 20, fontWeight: 'bold'}}>
Move fast and be bold
</Text>
<Text style={{fontSize: 20, fontWeight: '900'}}>
Move fast and be ultrabold
</Text>
</View>
);
},
}, {
title: 'Font Style',
render: function() {
return (
<View>
<Text style={{fontStyle: 'normal'}}>
Normal text
</Text>
<Text style={{fontStyle: 'italic'}}>
Italic text
</Text>
</View>
);
},
}, {
title: 'Selectable',
render: function() {
return (
<View>
<Text selectable={true}>
This text is <Text style={{fontWeight: 'bold'}}>selectable</Text> if you click-and-hold.
</Text>
</View>
);
},
}, {
title: 'Text Decoration',
render: function() {
return (
<View>
<Text style={{textDecorationLine: 'underline', textDecorationStyle: 'solid'}}>
Solid underline
</Text>
<Text style={{textDecorationLine: 'underline', textDecorationStyle: 'double', textDecorationColor: '#ff0000'}}>
Double underline with custom color
</Text>
<Text style={{textDecorationLine: 'underline', textDecorationStyle: 'dashed', textDecorationColor: '#9CDC40'}}>
Dashed underline with custom color
</Text>
<Text style={{textDecorationLine: 'underline', textDecorationStyle: 'dotted', textDecorationColor: 'blue'}}>
Dotted underline with custom color
</Text>
<Text style={{textDecorationLine: 'none'}}>
None textDecoration
</Text>
<Text style={{textDecorationLine: 'line-through', textDecorationStyle: 'solid'}}>
Solid line-through
</Text>
<Text style={{textDecorationLine: 'line-through', textDecorationStyle: 'double', textDecorationColor: '#ff0000'}}>
Double line-through with custom color
</Text>
<Text style={{textDecorationLine: 'line-through', textDecorationStyle: 'dashed', textDecorationColor: '#9CDC40'}}>
Dashed line-through with custom color
</Text>
<Text style={{textDecorationLine: 'line-through', textDecorationStyle: 'dotted', textDecorationColor: 'blue'}}>
Dotted line-through with custom color
</Text>
<Text style={{textDecorationLine: 'underline line-through'}}>
Both underline and line-through
</Text>
</View>
);
},
}, {
title: 'Nested',
description: 'Nested text components will inherit the styles of their ' +
'parents (only backgroundColor is inherited from non-Text parents). ' +
'<Text> only supports other <Text> and raw text (strings) as children.',
render: function() {
return (
<View>
<Text>
(Normal text,
<Text style={{fontWeight: 'bold'}}>
(and bold
<Text style={{fontSize: 11, color: '#527fe4'}}>
(and tiny inherited bold blue)
</Text>
)
</Text>
)
</Text>
<Text style={{opacity:0.7}}>
(opacity
<Text>
(is inherited
<Text style={{opacity:0.7}}>
(and accumulated
<Text style={{backgroundColor:'#ffaaaa'}}>
(and also applies to the background)
</Text>
)
</Text>
)
</Text>
)
</Text>
<Text style={{fontSize: 12}}>
<Entity>Entity Name</Entity>
</Text>
</View>
);
},
}, {
title: 'Text Align',
render: function() {
return (
<View>
<Text>
auto (default) - english LTR
</Text>
<Text>
أحب اللغة العربية auto (default) - arabic RTL
</Text>
<Text style={{textAlign: 'left'}}>
left left left left left left left left left left left left left left left
</Text>
<Text style={{textAlign: 'center'}}>
center center center center center center center center center center center
</Text>
<Text style={{textAlign: 'right'}}>
right right right right right right right right right right right right right
</Text>
<Text style={{textAlign: 'justify'}}>
justify: this text component{"'"}s contents are laid out with "textAlign: justify"
and as you can see all of the lines except the last one span the
available width of the parent container.
</Text>
</View>
);
},
}, {
title: 'Letter Spacing',
render: function() {
return (
<View>
<Text style={{letterSpacing: 0}}>
letterSpacing = 0
</Text>
<Text style={{letterSpacing: 2, marginTop: 5}}>
letterSpacing = 2
</Text>
<Text style={{letterSpacing: 9, marginTop: 5}}>
letterSpacing = 9
</Text>
<Text style={{letterSpacing: -1, marginTop: 5}}>
letterSpacing = -1
</Text>
</View>
);
},
}, {
title: 'Spaces',
render: function() {
return (
<Text>
A {'generated'} {' '} {'string'} and some &nbsp;&nbsp;&nbsp; spaces
</Text>
);
},
}, {
title: 'Line Height',
render: function() {
return (
<Text>
<Text style={{lineHeight: 35}}>
A lot of space between the lines of this long passage that should
wrap once.
</Text>
</Text>
);
},
}, {
title: 'Empty Text',
description: 'It\'s ok to have Text with zero or null children.',
render: function() {
return (
<Text />
);
},
}, {
title: 'Toggling Attributes',
render: function(): React.Element<any> {
return <AttributeToggler />;
},
}, {
title: 'backgroundColor attribute',
description: 'backgroundColor is inherited from all types of views.',
render: function() {
return (
<Text style={{backgroundColor: 'yellow'}}>
Yellow container background,
<Text style={{backgroundColor: '#ffaaaa'}}>
{' '}red background,
<Text style={{backgroundColor: '#aaaaff'}}>
{' '}blue background,
<Text>
{' '}inherited blue background,
<Text style={{backgroundColor: '#aaffaa'}}>
{' '}nested green background.
</Text>
</Text>
</Text>
</Text>
</Text>
);
},
}, {
title: 'numberOfLines attribute',
render: function() {
return (
<View>
<Text numberOfLines={1}>
Maximum of one line, no matter how much I write here. If I keep writing, it{"'"}ll just truncate after one line.
</Text>
<Text numberOfLines={2} style={{marginTop: 20}}>
Maximum of two lines, no matter how much I write here. If I keep writing, it{"'"}ll just truncate after two lines.
</Text>
<Text style={{marginTop: 20}}>
No maximum lines specified, no matter how much I write here. If I keep writing, it{"'"}ll just keep going and going.
</Text>
</View>
);
},
}, {
title: 'Text highlighting (tap the link to see highlight)',
render: function() {
return (
<View>
<Text>Lorem ipsum dolor sit amet, <Text suppressHighlighting={false} style={{backgroundColor: 'white', textDecorationLine: 'underline', color: 'blue'}} onPress={() => null}>consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud</Text> exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</Text>
</View>
);
},
}, {
title: 'allowFontScaling attribute',
render: function() {
return (
<View>
<Text>
By default, text will respect Text Size accessibility setting on iOS.
It means that all font sizes will be increased or descreased depending on the value of Text Size setting in
{" "}<Text style={{fontWeight: 'bold'}}>Settings.app - Display & Brightness - Text Size</Text>
</Text>
<Text style={{marginTop: 10}}>
You can disable scaling for your Text component by passing {"\""}allowFontScaling={"{"}false{"}\""} prop.
</Text>
<Text allowFontScaling={false} style={{marginTop: 20}}>
This text will not scale.
</Text>
</View>
);
},
}, {
title: 'Inline views',
render: function() {
return (
<View>
<Text>
This text contains an inline blue view <View style={{width: 25, height: 25, backgroundColor: 'steelblue'}} /> and
an inline image <Image source={require('./flux.png')} style={{width: 30, height: 11, resizeMode: 'cover'}}/>. Neat, huh?
</Text>
</View>
);
},
}, {
title: 'Text shadow',
render: function() {
return (
<View>
<Text style={{fontSize: 20, textShadowOffset: {width: 2, height: 2}, textShadowRadius: 1, textShadowColor: '#00cccc'}}>
Demo text shadow
</Text>
</View>
);
},
}, {
title: 'Ellipsize mode',
render: function() {
return (
<View>
<Text numberOfLines={1}>
This very long text should be truncated with dots in the end.
</Text>
<Text ellipsizeMode="middle" numberOfLines={1}>
This very long text should be truncated with dots in the middle.
</Text>
<Text ellipsizeMode="head" numberOfLines={1}>
This very long text should be truncated with dots in the beginning.
</Text>
<Text ellipsizeMode="clip" numberOfLines={1}>
This very looooooooooooooooooooooooooooong text should be clipped.
</Text>
</View>
);
},
}, {
title: 'Font variants',
render: function() {
return (
<View>
<Text style={{fontVariant: ['small-caps']}}>
Small Caps{'\n'}
</Text>
<Text style={{fontFamily: 'Hoefler Text', fontVariant: ['oldstyle-nums']}}>
Old Style nums 0123456789{'\n'}
</Text>
<Text style={{fontFamily: 'Hoefler Text', fontVariant: ['lining-nums']}}>
Lining nums 0123456789{'\n'}
</Text>
<Text style={{fontVariant: ['tabular-nums']}}>
Tabular nums{'\n'}
1111{'\n'}
2222{'\n'}
</Text>
<Text style={{fontVariant: ['proportional-nums']}}>
Proportional nums{'\n'}
1111{'\n'}
2222{'\n'}
</Text>
</View>
);
},
}, {
title: 'Dynamic Font Size Adjustment',
render: function(): React.Element<any> {
return <AdjustingFontSize />;
},
}];