Press n or j to go to the next uncovered block, b, p or k for the previous block.
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* Scanner 初始欢迎页面
*/
import React, { useEffect, useRef } from 'react';
import { Animated, Easing, ScrollView, TouchableOpacity, View } from 'react-native';
import { LinearGradient } from 'expo-linear-gradient';
import type { EdgeInsets } from 'react-native-safe-area-context';
import { Text, XStack, YStack } from 'tamagui';
import { AppHeader } from '@/src/components/AppHeader';
import { IconSymbol } from '@/src/components/ui/IconSymbol';
import { LottieAnimation } from '@/src/components/LottieAnimation';
import { useThemeColors, useIsDarkMode } from '@/src/hooks/useThemeColors';
interface InitialScreenProps {
insets: EdgeInsets;
onStartScan: () => void;
}
export function InitialScreen({ insets, onStartScan }: InitialScreenProps) {
const colors = useThemeColors();
const isDark = useIsDarkMode();
// 功能步骤数据
const SCAN_STEPS = [
{
icon: 'camera.fill' as const,
title: '拍摄成分表',
desc: '对准猫粮包装上的配料表',
bgColor: isDark ? '#3D2A1F' : colors.primaryLight,
iconColor: colors.primary,
},
{
icon: 'doc.text.viewfinder' as const,
title: '智能识别',
desc: 'AI 自动提取成分信息',
bgColor: isDark ? '#2D1F0A' : colors.warningMuted,
iconColor: colors.warning,
},
{
icon: 'chart.bar.doc.horizontal.fill' as const,
title: '生成报告',
desc: '获得专业的分析结果',
bgColor: isDark ? '#0D2818' : colors.successMuted,
iconColor: colors.success,
},
];
// 动画值
const pulseAnim = useRef(new Animated.Value(1)).current;
const stepAnims = useRef(SCAN_STEPS.map(() => new Animated.Value(0))).current;
// 主图标脉冲动画
useEffect(() => {
const pulse = Animated.loop(
Animated.sequence([
Animated.timing(pulseAnim, {
toValue: 1.05,
duration: 1500,
easing: Easing.inOut(Easing.ease),
useNativeDriver: true,
}),
Animated.timing(pulseAnim, {
toValue: 1,
duration: 1500,
easing: Easing.inOut(Easing.ease),
useNativeDriver: true,
}),
])
);
pulse.start();
return () => pulse.stop();
}, [pulseAnim]);
// 步骤卡片依次进入动画
useEffect(() => {
const animations = stepAnims.map((anim, index) =>
Animated.timing(anim, {
toValue: 1,
duration: 400,
delay: 200 + index * 150,
easing: Easing.out(Easing.back(1.5)),
useNativeDriver: true,
})
);
Animated.stagger(100, animations).start();
}, [stepAnims]);
return (
<YStack flex={1} backgroundColor={colors.background as any}>
{/* Header 区域 */}
<AppHeader title="智能扫描" insets={insets} />
{/* 内容区域 */}
<ScrollView
style={{ flex: 1 }}
showsVerticalScrollIndicator={false}
contentContainerStyle={{
flexGrow: 1,
paddingHorizontal: 20,
paddingTop: 16,
paddingBottom: Math.max(32, insets.bottom + 24),
}}
>
<YStack alignItems="center" gap="$4" maxWidth={400} width="100%" alignSelf="center">
{/* 顶部动画图标区域 */}
<Animated.View
style={{
transform: [{ scale: pulseAnim }],
shadowColor: colors.primary,
shadowOffset: { width: 0, height: 8 },
shadowOpacity: 0.3,
shadowRadius: 16,
elevation: 8,
}}
>
<YStack
width={120}
height={120}
borderRadius={60}
overflow="hidden"
alignItems="center"
justifyContent="center"
>
<LinearGradient
colors={isDark ? ['#3D2A1F', '#2D1F1A'] : [colors.primaryLight, colors.primary]}
start={{ x: 0, y: 0 }}
end={{ x: 1, y: 1 }}
style={{
position: 'absolute',
top: 0,
left: 0,
right: 0,
bottom: 0,
}}
/>
<LottieAnimation
source={require('@/assets/animations/scan_face.json')}
autoPlay
loop
width={80}
height={80}
/>
</YStack>
</Animated.View>
{/* 主标题和描述 */}
<YStack alignItems="center" gap="$2" paddingHorizontal="$2">
<Text
fontSize={26}
fontWeight="900"
textAlign="center"
color={colors.text as any}
letterSpacing={0.5}
>
猫粮成分智能分析
</Text>
<Text
fontSize={14}
color={colors.textSecondary as any}
textAlign="center"
fontWeight="500"
lineHeight={20}
>
拍照即可获得专业的添加剂成分分析报告
</Text>
</YStack>
{/* 功能步骤卡片 */}
<YStack width="100%" gap="$3" marginTop="$2">
{SCAN_STEPS.map((step, index) => {
const translateY = stepAnims[index].interpolate({
inputRange: [0, 1],
outputRange: [30, 0],
});
return (
<Animated.View
key={index}
style={{
opacity: stepAnims[index],
transform: [{ translateY }],
}}
>
<XStack
backgroundColor={colors.cardBackground as any}
borderRadius="$5"
padding="$3.5"
alignItems="center"
gap="$3"
borderWidth={1.5}
borderColor={colors.borderMuted as any}
>
{/* 步骤序号 */}
<YStack
width={28}
height={28}
borderRadius={14}
backgroundColor={colors.primary as any}
alignItems="center"
justifyContent="center"
>
<Text
fontSize={14}
fontWeight="800"
color={(isDark ? colors.background : 'white') as any}
>
{index + 1}
</Text>
</YStack>
{/* 图标 */}
<YStack
width={44}
height={44}
borderRadius={12}
backgroundColor={step.bgColor as any}
alignItems="center"
justifyContent="center"
>
<IconSymbol name={step.icon} size={22} color={step.iconColor} />
</YStack>
{/* 文字内容 */}
<YStack flex={1} gap="$0.5">
<Text fontSize={15} fontWeight="700" color={colors.text as any}>
{step.title}
</Text>
<Text fontSize={12} color={colors.textSecondary as any} fontWeight="500">
{step.desc}
</Text>
</YStack>
{/* 箭头指示 */}
{index < SCAN_STEPS.length - 1 && (
<View
style={{
position: 'absolute',
bottom: -14,
left: '50%',
marginLeft: -8,
zIndex: 1,
}}
>
<IconSymbol name="chevron.down" size={16} color={colors.textTertiary} />
</View>
)}
</XStack>
</Animated.View>
);
})}
</YStack>
{/* 提示信息 */}
<XStack
backgroundColor={colors.selected as any}
borderRadius="$4"
paddingHorizontal="$3"
paddingVertical="$2.5"
alignItems="center"
gap="$2"
width="100%"
borderWidth={1}
borderColor={colors.primaryLight as any}
>
<IconSymbol name="lightbulb.fill" size={18} color={colors.primary} />
<Text fontSize={12} color={colors.textSecondary as any} fontWeight="600" flex={1}>
建议在光线充足的环境下拍摄，确保文字清晰可见
</Text>
</XStack>
{/* 开始按钮 */}
<YStack width="100%" marginTop="$2">
<TouchableOpacity onPress={onStartScan} activeOpacity={0.9} style={{ width: '100%' }}>
<LinearGradient
colors={[colors.primaryLight, colors.primary, colors.primaryDark]}
start={{ x: 0, y: 0 }}
end={{ x: 1, y: 1 }}
style={{
height: 56,
borderRadius: 16,
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'center',
gap: 10,
}}
>
<IconSymbol name="camera.viewfinder" size={24} color="white" />
<Text fontSize={17} fontWeight="800" color="white" letterSpacing={0.5}>
开始扫描
</Text>
</LinearGradient>
</TouchableOpacity>
</YStack>
</YStack>
</ScrollView>
</YStack>
);
}
|