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Preso.js
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import React from "react";
import PropTypes from "prop-types";
import ReactNative, {
Animated,
StyleSheet,
Text,
View,
Image,
FlatList,
ScrollView,
Dimensions,
BackHandler,
Platform,
StatusBar,
AsyncStorage,
TouchableOpacity,
TouchableWithoutFeedback
} from "react-native";
import PhotoViewer from "./PhotoViewer";
// import { Video } from "expo";
import { atomOneLight } from "react-syntax-highlighter/dist/styles";
import SyntaxHighlighter from "react-native-syntax-highlighter";
const CodeTag = ({ children }) => (
<View
style={{
flex: 1,
alignItems: "center",
justifyContent: "center",
backgroundColor: "white"
}}
>
{children}
</View>
);
class CodePage extends React.Component {
render() {
return (
<View
style={{
...SCREEN_SIZE,
backgroundColor: "white",
alignItems: "center",
justifyContent: "center"
}}
>
<SyntaxHighlighter
CodeTag={CodeTag}
PreTag={CodeTag}
fontSize={34}
language="jsx"
style={{ ...atomOneLight, background: "green" }}
>
{this.props.code}
</SyntaxHighlighter>
</View>
);
}
}
class ScrollingCodePage extends React.Component {
render() {
return (
<View
style={{
...SCREEN_SIZE,
alignItems: "center",
justifyContent: "center"
}}
>
<SyntaxHighlighter
fontSize={34}
language="jsx"
style={{ ...atomOneLight, borderWidth: 0 }}
>
{this.props.code}
</SyntaxHighlighter>
</View>
);
}
}
class CharacterPage extends React.Component {
render() {
return (
<View style={{ ...SCREEN_SIZE }}>
<Image
style={{
position: "absolute",
left: 0,
top: 0,
width: 1024,
height: 768
}}
resizeMode="cover"
source={require("./desktop.png")}
/>
<View
style={{
position: "absolute",
height: 400,
top: 100,
left: 0,
right: 0,
alignItems: "center"
}}
>
<Image
style={{
flex: 1
}}
source={this.props.source}
resizeMode="contain"
/>
</View>
<View
style={{
position: "absolute",
bottom: 0,
right: 0,
left: 0,
height: 200,
backgroundColor: "transparent"
}}
>
<Text
style={{
color: "white",
fontSize: TITLE_SIZE,
fontFamily: "System",
backgroundColor: "transparent",
textAlign: "center"
}}
>
{this.props.text}
</Text>
</View>
</View>
);
}
}
class ImagePage extends React.Component {
render() {
return (
<View
style={{
...SCREEN_SIZE,
overflow: "hidden"
}}
>
<Image
source={this.props.source}
style={{
backgroundColor: "white",
resizeMode: "contain",
width: 1024,
height: 768,
...(this.props.crop === "dragon"
? {
width: 1500,
height: 650
}
: {})
}}
/>
{this.props.upperText &&
<View
style={{
backgroundColor: "rgba(118,84,57,0.8)",
position: "absolute",
top: 0,
right: 0,
left: 0,
height: 100
}}
>
<Text
style={{
color: "white",
textAlign: "center",
fontSize: TITLE_SIZE,
fontFamily: "System",
marginVertical: 30
}}
>
{this.props.upperText}
</Text>
</View>}
{this.props.lowerText &&
<View
style={{
backgroundColor: "rgba(118,84,57,0.8)",
position: "absolute",
bottom: 0,
right: 0,
left: 0,
height: 100
}}
>
<Text
style={{
color: "white",
textAlign: "center",
fontSize: TITLE_SIZE,
fontFamily: "System",
marginVertical: 30
}}
>
{this.props.lowerText}
</Text>
</View>}
</View>
);
}
}
class ThreadScenePage extends React.Component {
scrollY = new Animated.Value(0);
render() {
return (
<View style={{ ...SCREEN_SIZE, overflow: "hidden" }}>
<Image
style={{
position: "absolute",
left: 0,
top: 0,
width: 1024,
height: 768
}}
resizeMode="cover"
source={require("./desktop.png")}
/>
<Image
style={{
width: 260,
height: 700,
right: 30,
top: -40,
position: "absolute"
}}
source={require("./phone.png")}
resizeMode="contain"
/>
<View
style={{
position: "absolute",
backgroundColor: "rgb(240,240,240)",
right: 65,
top: 160,
width: 186,
height: 321
}}
>
{this.props.phoneImage &&
<Image
style={{
width: 186,
height: 321,
resizeMode: "contain",
backgroundColor: "black"
}}
source={require("./samplephoto.jpg")}
/>}
</View>
<Animated.ScrollView
pagingEnabled
showsVerticalScrollIndicator={false}
scrollEventThrottle={1}
onScroll={Animated.event(
[{ nativeEvent: { contentOffset: { y: this.scrollY } } }],
{ useNativeDriver: true }
)}
>
{this.props.scenes.map((scene, index) => {
return (
<View style={{ ...SCREEN_SIZE }} key={index}>
<Animated.View
style={{
position: "absolute",
height: 400,
top: 100,
left: 0,
right: 0,
flexDirection: "row",
alignItems: "center",
transform: [{ translateY: this.scrollY }]
}}
>
<Image
style={{
flex: 16,
height: 400
}}
source={require("./js-gal.png")}
resizeMode="contain"
/>
{!this.props.skipRNguy &&
<Image
style={{
flex: 5,
height: 400
}}
source={require("./rn-dude.png")}
resizeMode="contain"
/>}
<Image
style={{
flex: 7,
height: 400
}}
source={require("./native-gal.png")}
resizeMode="contain"
/>
<View
style={{
flex: 8
}}
/>
</Animated.View>
{(scene.jsSays || scene.rnSays || scene.uiSays) &&
<Animated.View
style={{
...StyleSheet.absoluteFillObject,
opacity: this.scrollY.interpolate({
inputRange: [
SCREEN_HEIGHT * index,
SCREEN_HEIGHT * index + 60
],
outputRange: [1, 0]
})
}}
>
<View
style={{
position: "absolute",
left: !this.props.skipRNguy
? scene.jsSays ? 275 : scene.uiSays ? 620 : 445
: scene.uiSays ? 560 : 320,
bottom: 140,
height: 100,
width: 100,
backgroundColor: "white",
transform: [{ rotate: "45deg" }]
}}
/>
<View
style={{
borderRadius: 20,
position: "absolute",
bottom: 50,
right: 50,
left: 50,
height: 150,
padding: 30,
backgroundColor: "white"
}}
>
<Text
style={{
color: "#333",
fontSize: 33,
backgroundColor: "transparent",
fontFamily: "System",
textAlign: "center"
}}
>
{scene.jsSays || scene.rnSays || scene.uiSays}
</Text>
</View>
</Animated.View>}
{scene.greatFinger && GREAT_FINGER}
</View>
);
})}
</Animated.ScrollView>
{this.props.greatFinger && GREAT_FINGER}
</View>
);
}
}
const GREAT_FINGER = (
<View
style={{
position: "absolute",
right: 0,
top: 0,
width: 964,
height: 2213,
transform: [
{ translateX: 550 },
{ translateY: -550 },
{ rotateZ: "-35deg" },
{ scale: 0.4 }
]
}}
>
<Image
source={require("./finger.png")}
style={{ width: 964, height: 2213 }}
/>
</View>
);
const CharacterIntroPage = () => (
<DeskPage
items={[
{
text: "JS thread reads and executes your code",
image: require("./js-gal.png")
},
{
text: "UI/Main thread puts stuff on screen",
image: require("./native-gal.png")
}
]}
/>
);
class DeskPage extends React.Component {
render() {
return (
<View style={{ ...SCREEN_SIZE }}>
<Image
style={{
position: "absolute",
left: 0,
top: 0,
width: 1024,
height: 768
}}
resizeMode="cover"
source={require("./desktop.png")}
/>
<ScrollView showsVerticalScrollIndicator={false} pagingEnabled>
{this.props.items.map(item => (
<View style={SCREEN_SIZE} key={item.text}>
<View
style={{
position: "absolute",
height: 400,
top: 100,
left: 0,
right: 0,
alignItems: "center"
}}
>
<Image
style={{
flex: 1
}}
source={item.image}
resizeMode="contain"
/>
</View>
<View
style={{
position: "absolute",
bottom: 0,
right: 0,
left: 0,
height: 200,
backgroundColor: "transparent"
}}
>
<Text
style={{
color: "white",
fontSize: TITLE_SIZE,
backgroundColor: "transparent",
fontFamily: "System",
textAlign: "center"
}}
>
{item.text}
</Text>
</View>
</View>
))}
</ScrollView>
</View>
);
}
}
const RNCharacterPage = ({ text }) => (
<CharacterPage source={require("./rn-dude.png")} text={text} />
);
// class PhoneCharacterPage extends React.Component {
// render() {
// // return (
// // <Video
// // source={require("./photo-viewer-demo.mov")}
// // rate={1.0}
// // volume={0}
// // muted={true}
// // resizeMode="cover"
// // shouldPlay
// // isLooping
// // style={{ flex: 1 }}
// // />
// );
// }
// }
// class VideoPage extends React.Component {
// render() {
// return (
// <Video
// source={require("./photo-viewer-demo.mov")}
// rate={1.0}
// volume={0}
// muted={true}
// resizeMode="cover"
// shouldPlay
// isLooping
// style={{ flex: 1 }}
// />
// );
// }
// }
const SCREEN_WIDTH = Dimensions.get("window").width;
const SCREEN_HEIGHT = Dimensions.get("window").height;
let lastLocation = null;
class PagerScrollView extends React.Component {
_sv: ?ScrollView = null;
componentDidMount() {
AsyncStorage.getItem("page_index", (err, data) => {
if (data) {
setTimeout(() => {
this._sv &&
this._sv
.getScrollResponder()
.scrollTo({ x: SCREEN_WIDTH * Number(data) });
}, 10);
goBackToFirstScreen = () => {
this._sv.getScrollResponder().scrollTo({ x: 0 });
};
}
});
}
render() {
return (
<FlatList
ref={sv => {
this._sv = sv;
}}
getItemLayout={({ item }, index) => ({
length: SCREEN_WIDTH,
offset: index * SCREEN_WIDTH,
index
})}
style={{ flex: 1 }}
pagingEnabled
keyExtractor={(item, index) => index}
data={this.props.pages}
renderItem={({ item }) => <View style={SCREEN_SIZE}>{item()}</View>}
horizontal
showsHorizontalScrollIndicator={false}
onScroll={e => {
const { x } = e.nativeEvent.contentOffset;
if (x % SCREEN_WIDTH === 0) {
const newLocation = x / SCREEN_WIDTH;
if (newLocation !== lastLocation) {
lastLocation = newLocation;
AsyncStorage.setItem("page_index", "" + newLocation);
}
}
}}
scrollEventThrottle={64}
/>
);
}
}
let goBackToFirstScreen = () => {};
const TITLE_VIEW_STYLE = {
padding: 30,
...SCREEN_SIZE,
alignItems: "center",
justifyContent: "center"
};
class TitlePage extends React.Component {
render() {
return (
<TouchableWithoutFeedback
onLongPress={() => {
goBackToFirstScreen();
}}
>
<View style={{ ...TITLE_VIEW_STYLE, ...SCREEN_SIZE }}>
<Text
style={{
fontSize: TITLE_SIZE,
color: TITLE_COLOR,
textAlign: "center"
}}
>
{this.props.title}
</Text>
</View>
</TouchableWithoutFeedback>
);
}
}
// const TITLE_COLOR = "#A86715";
// const TITLE_COLOR = "#A88315";
const TITLE_COLOR = "#765438";
class CoverPage extends React.Component {
render() {
return (
<TouchableWithoutFeedback onLongPress={resetEverything}>
<View
style={{
padding: 30,
...SCREEN_SIZE,
backgroundColor: TITLE_COLOR
}}
>
<Text
style={{
marginTop: 180,
color: "white",
fontSize: TITLE_SIZE + 50,
fontFamily: "System",
textAlign: "center"
}}
>
{this.props.title}
</Text>
<Text
style={{
position: "absolute",
left: 0,
right: 0,
bottom: 100,
height: 100,
color: "white",
fontWeight: "100",
fontFamily: "System",
fontSize: TITLE_SIZE + 30,
textAlign: "center"
}}
>
Eric Vicenti - Facebook
</Text>
</View>
</TouchableWithoutFeedback>
);
}
}
const getExamplePhotos = key => [
{
key: "a" + key,
width: 1500,
height: 1000,
// source: require("./fire.jpg")
source: {
uri: "https://images.unsplash.com/photo-1484732710474-fe08580a0fc0?dpr=0.800000011920929&auto=format&fit=crop&w=1500&h=1000&q=80&cs=tinysrgb&crop=",
cache: "force-cache"
}
},
{
key: "b" + key,
width: 1500,
height: 996,
source: {
uri: "https://images.unsplash.com/photo-1469474968028-56623f02e42e?dpr=0.800000011920929&auto=format&fit=crop&w=1500&h=996&q=80&cs=tinysrgb&crop=",
cache: "force-cache"
}
},
{
key: "c" + key,
width: 1500,
height: 1000,
source: {
uri: "https://images.unsplash.com/photo-1496482475496-a91f31e0386c?dpr=0.800000011920929&auto=format&fit=crop&w=1500&h=1000&q=80&cs=tinysrgb&crop=",
cache: "force-cache"
}
}
];
class MultiMessagePage extends React.Component {
scrollY = new Animated.Value(0);
render() {
return (
<Animated.ScrollView
pagingEnabled
style={{ ...SCREEN_SIZE }}
showsVerticalScrollIndicator={false}
scrollEventThrottle={1}
onScroll={Animated.event(
[{ nativeEvent: { contentOffset: { y: this.scrollY } } }],
{ useNativeDriver: true }
)}
>
{this.props.messages.map((message, index) => (
<TouchableWithoutFeedback
onLongPress={goBackToFirstScreen}
key={index}
>
<View style={{ ...SCREEN_SIZE, ...TITLE_VIEW_STYLE }}>
<Animated.Text
style={{
fontSize: TITLE_SIZE,
color: TITLE_COLOR,
textAlign: "center",
transform: [
{
translateY: this.scrollY.interpolate({
inputRange: [
SCREEN_HEIGHT * index - SCREEN_HEIGHT,
SCREEN_HEIGHT * index,
SCREEN_HEIGHT * index + SCREEN_HEIGHT,
SCREEN_HEIGHT * index + SCREEN_HEIGHT + SCREEN_HEIGHT
],
outputRange: [
0,
0,
SCREEN_HEIGHT - 100,
2 * SCREEN_HEIGHT - 200
]
})
}
]
}}
>
{message}
</Animated.Text>
</View>
</TouchableWithoutFeedback>
))}
</Animated.ScrollView>
);
}
}
const TITLE_SIZE = 48;
const SCREEN_SIZE = {
width: SCREEN_WIDTH,
height: SCREEN_HEIGHT
};
class PhotoViewerPage extends React.Component {
render() {
const { onPhotoOpen, photos } = this.props;
return (
<View style={{ ...SCREEN_SIZE, justifyContent: "center" }}>
<View
style={{
flexDirection: "row",
justifyContent: "center",
alignItems: "center"
}}
>
{photos.map(photo => (
<TouchableWithoutFeedback
key={photo.key}
onPress={() => {
onPhotoOpen(photos, photo.key);
}}
>
<View
style={{
width: 200,
height: 200,
margin: 20
}}
>
<PhotoViewer.Photo
style={{ width: 200, height: 200 }}
photo={photo}
/>
</View>
</TouchableWithoutFeedback>
))}
</View>
</View>
);
}
}
// class MultiPage extends React.Component {
// state = { msg: 0 };
// render() {
// return (
// <TouchableWithoutFeedback
// onPress={() => {
// const msg = this.state.msg + 1 === this.props.messages.length
// ? 0
// : this.state.msg + 1;
// this.setState({ msg });
// }}
// >
// <View style={{ flex: 1 }}>
// <TitlePage title={this.props.messages[this.state.msg]} />
// </View>
// </TouchableWithoutFeedback>
// );
// }
// }
class MultiPage extends React.Component {
state = { msg: 0 };
render() {
return (
<ScrollView pagingEnabled showsVerticalScrollIndicator={false}>
{this.props.children}
</ScrollView>
);
}
}
import {
transformSnippet,
scrollEventSnippet,
transformMathSnippet
} from "./PresoSnippets.js";
class PhonePage extends React.Component {
render() {
return (
<View style={{ ...SCREEN_SIZE, backgroundColor: "black" }}>
<Image
source={require("./desktop.png")}
style={[
{
position: "absolute",
top: 0,
left: 0,
...SCREEN_SIZE
}
]}
resizeMode="cover"
/>
<Image
source={require("./iphone5s.png")}
style={[
{
position: "absolute",
top: 20,
left: 330,
width: 360,
height: 680
}
]}
resizeMode="contain"
/>
<View
style={{
position: "absolute",
width: 280,
height: 484,
left: 373,
top: 133,
backgroundColor: "white"
}}
>
{this.props.children}
</View>
</View>
);
}
}
class ButtonDemo extends React.Component {
render() {
return (
<PhonePage>
<ScrollView
style={{ flex: 1 }}
contentContainerStyle={{
justifyContent: "center",
alignItems: "center",
paddingTop: 100
}}
>
<TouchableOpacity
style={{
backgroundColor: "blue",
width: 200,
height: 70,
paddingTop: 20,
alignItems: "center",
borderRadius: 15
}}
>
<Text style={{ color: "white", textAlign: "center", fontSize: 26 }}>
Button
</Text>
</TouchableOpacity>
</ScrollView>
</PhonePage>
);
}
}
let resetEverything = () => {};
class Preso extends React.Component {
state = {
key: 0
};
componentDidMount() {
resetEverything = () => this.setState({ key: this.state.key + 1 });
}
render() {
return (
<PhotoViewer
key={this.state.key}
renderContent={({ onPhotoOpen }) => (
<PagerScrollView
pages={[
() => (
<CoverPage title="Practical hacks for delightful interactions" />
),
() => (
<MultiPage>
<ImagePage source={require("./demogif.gif")} />
<TitlePage title="Live demo!" />
<ImagePage source={require("./yodawg.jpg")} />
<PhotoViewerPage
onPhotoOpen={onPhotoOpen}
photos={getExamplePhotos("a")}
/>
</MultiPage>
),
() => (
<TitlePage title="Beautiful UI often relies on ugly hacks" />
),
() => (
<PhotoViewerPage
onPhotoOpen={onPhotoOpen}
photos={getExamplePhotos("az")}
/>
),
() => (
<TitlePage title="Three practical hacks you can use today" />
),
() => (
<MultiMessagePage
messages={[
"Our existing toolbox:",
"Animated System",
"Touch Responder System"
]}
/>
),
() => (
<MultiPage>
<CodePage code="const opacity = new Animated.Value(0);" />
<CodePage code="<Animated.View style={{opacity}} />" />
<CodePage code="Animated.timing(opacity, {toValue: 1}).start();" />
</MultiPage>
),
() => <TitlePage title="Who does this work?" />,
() => <CharacterIntroPage />,
() => (
<ThreadScenePage
skipRNguy
scenes={[
{ jsSays: "Please create a view with opacity 0" },
{ uiSays: "Done!" },
{
jsSays: "Then, change opacity to 0.01. Then change opacity to 0.02..."
}
]}
/>
),
() => <TitlePage title="1. Animate on the UI thread" />,
() => (
<ThreadScenePage
skipRNguy
scenes={[
{ jsSays: "Please create a view with opacity 0" },
{ uiSays: "Alright.. its up!" },
{
jsSays: "Now, animate the opacity to 1 on a linear curve for 500ms."
},
{ uiSays: "No problem!" }
]}
/>
),
() => (
<ImagePage