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处理分享canvas字体及加粗

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This commit is contained in:
李瑞
2025-12-08 00:03:53 +08:00
parent e66fd11bf3
commit 758a67cec7
2 changed files with 244 additions and 329 deletions
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318
src/components/ShareCardCanvas/index.tsx
View File

@@ -34,6 +34,9 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
}) => {
const [tempImagePath, setTempImagePath] = useState('') // 存储Canvas生成的图片路径
const [isDrawing, setIsDrawing] = useState(false) // 防止重复绘制
const [canvasNode, setCanvasNode] = useState<any>(null) // 2D Canvas 节点
const [ctx2d, setCtx2d] = useState<any>(null) // 2D 上下文
const [is2dCtx, setIs2dCtx] = useState(false) // 是否为 2D 上下文
// 设计稿尺寸
const designWidth = 500
@@ -54,87 +57,28 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
const canvasWidth = designWidth * scale
const canvasHeight = designHeight * scale
// 绘制加粗文字（单行）
const drawBoldText = (ctx: any, text: string, x: number, y: number, fontSize: number, color: string, fontFamily?: string) => {
// 设置字体样式
if (fontFamily) {
try {
// 尝试使用setFont方法（如果支持）
ctx.setFont(`${fontSize}px ${fontFamily}`)
} catch (error) {
// 如果不支持setFont，回退到setFontSize
ctx.setFontSize(fontSize)
}
} else {
ctx.setFontSize(fontSize)
// 2D Canvas 字体设置
const setFont2D = (ctx: any, fontSize: number, family?: string, weight?: string) => {
const fam = family || 'Noto Sans SC'
const wt = weight || '500'
ctx.font = `${wt} ${fontSize}px "${fam}"`
}
ctx.setFillStyle(color)
ctx.setTextAlign('left')
ctx.setTextBaseline('top')
// 绘制加粗文字（单行）
const drawBoldText = (ctx: any, text: string, x: number, y: number, fontSize: number, color: string, fontFamily: string = 'Noto Sans SC', fontWeight: string = '500') => {
// 设置字体样式
setFont2D(ctx, fontSize, fontFamily, fontWeight)
ctx.fillStyle = color
ctx.textAlign = 'left'
ctx.textBaseline = 'top'
// 绘制加粗效果：多次绘制并偏移
ctx.fillText(text, x, y)
ctx.fillText(text, x + 1, y)
ctx.fillText(text, x, y + 1)
ctx.fillText(text, x + 1, y + 1)
}
// 绘制文字（支持自动换行）- 微信小程序版本
const drawText = (ctx: any, text: string, x: number, y: number, maxWidth: number, fontSize: number, color: string, bold: boolean = false, fontFamily?: string) => {
// 设置字体样式
if (fontFamily) {
try {
// 尝试使用setFont方法（如果支持）
ctx.setFont(`${fontSize}px ${fontFamily}`)
} catch (error) {
// 如果不支持setFont，回退到setFontSize
ctx.setFontSize(fontSize)
}
} else {
ctx.setFontSize(fontSize)
}
ctx.setFillStyle(color)
ctx.setTextAlign('left')
ctx.setTextBaseline('top')
const words = text.split('')
let line = ''
let lineY = y
for (let i = 0; i < words.length; i++) {
const testLine = line + words[i]
// 微信小程序中measureText返回的是对象，需要访问width属性
const metrics = ctx.measureText(testLine)
const testWidth = metrics.width
if (testWidth > maxWidth && i > 0) {
if (bold) {
// 绘制加粗效果：多次绘制并偏移
ctx.fillText(line, x, lineY)
ctx.fillText(line, x + 1, lineY)
ctx.fillText(line, x, lineY + 1)
ctx.fillText(line, x + 1, lineY + 1)
} else {
ctx.fillText(line, x, lineY)
}
line = words[i]
lineY += fontSize * 1.2
} else {
line = testLine
}
}
if (bold) {
// 绘制加粗效果：多次绘制并偏移
ctx.fillText(line, x, lineY)
ctx.fillText(line, x + 1, lineY)
ctx.fillText(line, x, lineY + 1)
ctx.fillText(line, x + 1, lineY + 1)
} else {
ctx.fillText(line, x, lineY)
}
// if (isBold) {
// ctx.fillText(text, x + 1, y)
// ctx.fillText(text, x, y + 1)
// ctx.fillText(text, x + 1, y + 1)
// }
}
// 绘制圆角矩形函数
@@ -156,22 +100,22 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
// 绘制标签函数（通用）
const drawLabel = (ctx: any, x: number, y: number, width: number, height: number, radius: number, text: string, fontSize: number, textColor: string = '#000000', bgColor: string = '#FFFFFF', borderColor: string = '#E0E0E0') => {
// 绘制背景
ctx.setFillStyle(bgColor)
ctx.fillStyle = bgColor
drawRoundedRect(ctx, x, y, width, height, radius)
// 绘制边框
ctx.setStrokeStyle(borderColor)
ctx.setLineWidth(1 * dpr)
ctx.strokeStyle = borderColor
ctx.lineWidth = 1 * dpr
ctx.stroke()
// 绘制文字
const textCenterX = x + width / 2
const textCenterY = y + height / 2
ctx.setFillStyle(textColor)
ctx.setTextAlign('center')
ctx.setTextBaseline('middle')
ctx.setFontSize(fontSize)
ctx.fillStyle = textColor
ctx.textAlign = 'center'
ctx.textBaseline = 'middle'
setFont2D(ctx, fontSize)
ctx.save()
ctx.translate(textCenterX, textCenterY)
@@ -180,28 +124,35 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
}
// 加载图片 - 微信小程序版本
const loadImage = (src: string): Promise<string> => {
const loadImage = (src: string, canvas?: any): Promise<any> => {
return new Promise((resolve, reject) => {
Taro.getImageInfo({
src: src,
success: (res) => resolve(res.path),
fail: reject
})
if (!canvas || typeof canvas.createImage !== 'function') {
reject(new Error('2D canvas is required to load images'))
return
}
try {
const img = canvas.createImage()
img.onload = () => resolve(img)
img.onerror = (e: any) => reject(e)
img.src = src
} catch (e) {
reject(e)
}
})
}
// 绘制SVG路径到Canvas
const drawSVGPathToCanvas = (ctx: any) => {
// 设置绘制样式
ctx.setStrokeStyle('#48D800');
ctx.setLineWidth(scale * 3 * dpr);
ctx.setLineCap('round');
ctx.setLineJoin('round');
ctx.strokeStyle = '#00E5AD';
ctx.lineWidth = scale * 3 * dpr;
ctx.lineCap = 'round';
ctx.lineJoin = 'round';
ctx.save();
// 移动到指定位置并缩放
ctx.translate(scale * 210 * dpr, scale * 90 * dpr);
ctx.translate(scale * 200 * dpr, scale * 90 * dpr);
const scaleValue = 0.8
ctx.scale(scaleValue, scaleValue);
@@ -226,7 +177,7 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
}
// 绘制右上角场地图片
const drawVenueImages = async (ctx: any, venueImageConfig: any) => {
const drawVenueImages = async (ctx: any, venueImageConfig: any, canvas?: any) => {
// 如果只有一张图
const playerImgX = venueImageConfig.venueImgX
const playerImgY = venueImageConfig.venueImgY
@@ -237,7 +188,7 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
const venueImage = venueImageConfig.venueImage
try {
const playerImgPath = await loadImage(venueImage)
const playerImgPath = await loadImage(venueImage, canvas)
ctx.save()
// 移动到旋转中心点
@@ -249,7 +200,7 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
ctx.rotate((rotation * Math.PI) / 180)
// 1. 先绘制白色圆角矩形背景
ctx.setFillStyle('#FFFFFF')
ctx.fillStyle = '#FFFFFF'
ctx.beginPath()
// 使用更精确的圆角矩形绘制
@@ -338,7 +289,7 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
ctx.rotate((rotation * Math.PI) / 180)
// 绘制白色圆角矩形背景
ctx.setFillStyle('#FFFFFF')
ctx.fillStyle = '#FFFFFF'
ctx.beginPath()
const rectX = -playerImgSize / 2
@@ -380,7 +331,7 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
const imgY = -playerImgSize / 2 + padding
const imgSize = playerImgSize - padding * 2
ctx.setFillStyle('#E0E0E0')
ctx.fillStyle = '#E0E0E0'
ctx.beginPath()
const imgRadius = borderRadius - padding
@@ -448,15 +399,15 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
// 绘制背景 - 渐变色 已完成
const gradient = ctx.createLinearGradient(0, 0, 0, canvasHeightPx)
gradient.addColorStop(0, '#D8FFE5')
gradient.addColorStop(1, '#F9FFFB')
ctx.setFillStyle(gradient)
gradient.addColorStop(0, '#BFFFEF')
gradient.addColorStop(1, '#F2FFFC')
ctx.fillStyle = gradient
ctx.fillRect(0, 0, canvasWidthPx, canvasHeightPx)
console.log('背景绘制完成')
// 绘制背景条纹 已完成
ctx.setStrokeStyle('rgba(0, 0, 0, 0.03)')
ctx.setLineWidth(2)
ctx.strokeStyle = 'rgba(0, 0, 0, 0.03)'
ctx.lineWidth = 2
for (let i = 0; i < canvasWidthPx; i += 4) {
ctx.beginPath()
ctx.moveTo(i, 0)
@@ -470,7 +421,7 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
const avatarY = scale * 35 * dpr // 距离顶部35px
try {
const avatarPath = await loadImage(data.userAvatar)
const avatarPath = await loadImage(data.userAvatar, canvasNode)
// 微信小程序中绘制圆形头像需要特殊处理
ctx.save()
ctx.beginPath()
@@ -480,7 +431,7 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
ctx.restore()
} catch (error) {
// 如果头像加载失败，绘制默认头像
ctx.setFillStyle('#CCCCCC')
ctx.fillStyle = '#CCCCCC'
ctx.beginPath()
ctx.arc(avatarX + avatarSize / 2, avatarY + avatarSize / 2, avatarSize / 2, 0, 2 * Math.PI)
ctx.fill()
@@ -490,7 +441,8 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
const nicknameX = avatarX + avatarSize + 8 * dpr // 距离头像8px
const nicknameY = avatarY + (avatarSize - 18 * dpr) / 2 // 与头像水平居中对齐
const nicknameFontSize = scale * 18 * dpr
drawText(ctx, data.userNickname, nicknameX, nicknameY, 200 * dpr, nicknameFontSize, '#000000', true, '"Noto Sans SC"')
// drawText(ctx, data.userNickname, nicknameX, nicknameY, 200 * dpr, nicknameFontSize, '#000000', true, 'Noto Sans SC')
drawBoldText(ctx, data.userNickname, nicknameX, nicknameY, nicknameFontSize, '#000000', 'Noto Sans SC', '900')
// 绘制"邀你加入球局"文案
const inviteX = scale * 35 * dpr // 距离画布左侧35px
@@ -498,12 +450,12 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
const inviteFontSize = scale * 44 * dpr
// 绘制"邀你加入"
drawBoldText(ctx, '邀你加入', inviteX, inviteY, inviteFontSize, '#000000', "Noto Sans SC")
drawBoldText(ctx, '邀你加入', inviteX, inviteY, inviteFontSize, '#000000', 'Noto Sans SC', '900')
// 绘制"球局"特殊样式
const qiuJuX = inviteX + ctx.measureText('邀你加入').width + 5 * dpr
const qiuJuX = inviteX + ctx.measureText('邀你加入').width + 4 * dpr
const qiuJuFontSize = scale * 44 * dpr
drawBoldText(ctx, '球局', qiuJuX, inviteY, qiuJuFontSize, '#48D800', '"Noto Sans SC"')
drawBoldText(ctx, '球局', qiuJuX, inviteY, qiuJuFontSize, '#00E5AD', 'Noto Sans SC', '900')
// 测试绘制网络图片
drawSVGPathToCanvas(ctx)
@@ -528,16 +480,16 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
venueImgY: scale * 35 * dpr,
rotation: scale * -10, // 旋转-10度
}
await drawVenueImages(ctx, venueBackConfig)
await drawVenueImages(ctx, venueBackConfig, canvasNode)
// 前面的图
const venueFrontConfig = {
...venueBaseConfig,
venueImage: data.venueImages?.[0],
rotation: scale * 8, // 旋转-8度
}
await drawVenueImages(ctx, venueFrontConfig)
await drawVenueImages(ctx, venueFrontConfig, canvasNode)
} else {
await drawVenueImages(ctx, venueBaseConfig)
await drawVenueImages(ctx, venueBaseConfig, canvasNode)
}
// 绘制球局信息区域
@@ -554,26 +506,35 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
const textX = iconX + iconSize + 20
// 绘制网球图标
const tennisBallPath = await loadImage(`${OSS_BASE_URL}/images/b3eaf45e-ef28-4e45-9195-823b832e0451.jpg`)
const tennisBallPath = await loadImage(`${OSS_BASE_URL}/images/b3eaf45e-ef28-4e45-9195-823b832e0451.jpg`, canvasNode)
ctx.drawImage(tennisBallPath, iconX, gameInfoY, iconSize, iconSize)
// 绘制"单打"标签
const danDaX = scale * 100
const danDaY = scale * 196
const danDaWidth = scale * 76 * dpr
const danDaHeight = scale * 40 * dpr
const danDaRadius = scale * 20 * dpr
const danDaFontSize = scale * 22 * dpr
// 根据内容动态计算标签宽度（左右内边距）
const danDaPaddingX = scale * 16 * dpr
setFont2D(ctx, danDaFontSize)
const danDaTextWidth = ctx.measureText(data.gameType).width
const danDaWidth = danDaTextWidth + danDaPaddingX * 2
drawLabel(ctx, danDaX, danDaY, danDaWidth, danDaHeight, danDaRadius, data.gameType, danDaFontSize)
// 绘制技能等级标签
const skillX = scale * 190
// 绘制技能等级标签（基于“单打”标签实际宽度后移）
const labelGap = scale * 16 // 两个标签之间的间距（不乘 dpr，保持视觉间距）
const skillX = danDaX + danDaWidth + labelGap
const skillY = scale * 196
const skillWidth = scale * 180 * dpr
const skillHeight = scale * 40 * dpr
const skillRadius = scale * 20 * dpr
const skillFontSize = scale * 22 * dpr
// 根据内容动态计算技能标签宽度
const skillPaddingX = scale * 20 * dpr
setFont2D(ctx, skillFontSize)
const skillTextWidth = ctx.measureText(data.skillLevel).width
const skillWidth = skillTextWidth + skillPaddingX * 2
drawLabel(ctx, skillX, skillY, skillWidth, skillHeight, skillRadius, data.skillLevel, skillFontSize)
@@ -581,48 +542,56 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
const dateX = danDaX
const timeInfoY = infoStartY + infoSpacing
const timeInfoFontSize = scale * 24 * dpr
const calendarPath = await loadImage(`${OSS_BASE_URL}/images/ea792a5d-b105-4c95-bfc4-8af558f2b33b.jpg`)
const calendarPath = await loadImage(`${OSS_BASE_URL}/images/ea792a5d-b105-4c95-bfc4-8af558f2b33b.jpg`, canvasNode)
ctx.drawImage(calendarPath, iconX, timeInfoY, iconSize, iconSize)
// 绘制日期（绿色）
drawText(ctx, data.gameDate, dateX, timeInfoY + 8, 300, timeInfoFontSize, '#4CAF50')
drawBoldText(ctx, data.gameDate, dateX, timeInfoY + 8, timeInfoFontSize, '#00E5AD')
// 绘制时间（黑色）
const timeX = textX + ctx.measureText(data.gameDate).width + 10 * dpr
drawText(ctx, data.gameTime, timeX, timeInfoY + 8, 300, timeInfoFontSize, '#000000')
// drawText(ctx, data.gameTime, timeX, timeInfoY + 8, 300, timeInfoFontSize, '#000000')
drawBoldText(ctx, data.gameTime, timeX, timeInfoY + 8, timeInfoFontSize, '#000000')
// 绘制地点
const locationInfoY = infoStartY + infoSpacing * 2
const locationFontSize = scale * 22 * dpr
const locationPath = await loadImage(`${OSS_BASE_URL}/images/adc9a167-2ea9-4e3b-b963-6a894a1fd91b.jpg`)
const locationPath = await loadImage(`${OSS_BASE_URL}/images/adc9a167-2ea9-4e3b-b963-6a894a1fd91b.jpg`, canvasNode)
ctx.drawImage(locationPath, iconX, locationInfoY, iconSize, iconSize)
drawText(ctx, data.venueName, danDaX, locationInfoY + 10, 600, locationFontSize, '#000000')
drawBoldText(ctx, data.venueName, danDaX, locationInfoY + 10, locationFontSize, '#000000')
// 绘制完成，调用draw方法
console.log('开始调用ctx.draw()')
ctx.draw(false, () => {
const doExport = () => {
console.log('Canvas绘制完成，开始生成图片...')
// 延迟一下再生成图片，确保绘制完成
setTimeout(() => {
Taro.canvasToTempFilePath({
canvasId: 'shareCardCanvas',
const opts: any = {
fileType: 'png',
quality: 1,
success: (res) => {
success: (res: any) => {
console.log('图片生成成功:', res.tempFilePath)
setIsDrawing(false) // 绘制完成，重置状态
setIsDrawing(false)
resolve(res.tempFilePath)
onGenerated?.(res.tempFilePath)
setTempImagePath(res.tempFilePath)
},
fail: (error) => {
fail: (error: any) => {
console.error('图片生成失败:', error)
setIsDrawing(false) // 绘制失败，重置状态
setIsDrawing(false)
reject(error)
}
})
}, 500) // 延迟500ms确保Canvas完全渲染
})
}
if (canvasNode) {
opts.canvas = canvasNode
} else {
opts.canvasId = 'shareCardCanvas'
}
;(Taro as any).canvasToTempFilePath(opts)
}
if (typeof (ctx as any).draw === 'function') {
;(ctx as any).draw(false, () => setTimeout(doExport, 300))
} else {
setTimeout(doExport, 100)
}
console.log('Canvas绘制命令已发送')
} catch (error) {
@@ -639,20 +608,79 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
// 手动分享方法（已移除，由父组件处理分享）
// 组件挂载后绘制
// 使用 HTTPS 远程字体（woff2）加载到小程序渲染层；不改字号
useEffect(() => {
if (data && !isDrawing && !tempImagePath) {
try {
(Taro as any).loadFontFace({
global: true,
family: 'Noto Sans SC',
source: 'url("https://fonts.gstatic.com/s/notosanssc/v39/k3kCo84MPvpLmixcA63oeAL7Iqp5IZJF9bmaGzjCnYlNbPzT7HEL7j12XCOHJKg4RgZw3nFTvwZ8atTsBvwlvRUk7mYP2g.24.woff2")',
desc: { style: 'normal', weight: '700' },
success: () => {
console.log('===Noto Sans SC 远程字体加载成功')
try {
if (ctx2d && is2dCtx) {
drawShareCard(ctx2d)
} else {
console.log('字体已加载，但 2D 上下文尚未就绪，等待初始化后再绘制')
}
} catch (e) {
console.warn('===字体加载成功但重绘失败（忽略）', e)
}
},
fail: (err: any) => {
console.warn('===Noto Sans SC 远程字体加载失败：', err)
}
})
} catch (e) {
console.warn('===loadFontFace 不可用，跳过远程字体加载', e)
}
}, [ctx2d, is2dCtx])
// 初始化 2D Canvas（可回退旧版）
useEffect(() => {
try {
;(Taro as any).createSelectorQuery()
.select('#shareCardCanvas')
.fields({ node: true, size: true })
.exec((res: any[]) => {
const data = res && res[0]
if (data && data.node) {
const canvas = data.node
const context = canvas.getContext('2d')
// DPR 缩放，提升清晰度（当前 dpr = 1 也可正常显示）
const sys = (Taro as any).getSystemInfoSync?.() || {}
const ratio = sys.pixelRatio || 1
canvas.width = canvasWidth * ratio
canvas.height = canvasHeight * ratio
context.scale(ratio, ratio)
setCanvasNode(canvas)
setCtx2d(context)
setIs2dCtx(true)
console.log('2D Canvas 初始化成功')
} else {
setIs2dCtx(false)
console.log('2D Canvas 不可用，回退旧版 Canvas')
}
})
} catch (e) {
console.warn('初始化 2D Canvas 失败，回退旧版', e)
setIs2dCtx(false)
}
}, [])
// 组件挂载后绘制（仅在 2D 上下文就绪后绘制，避免回退导致 getImageInfo 404）
useEffect(() => {
if (data && !isDrawing && !tempImagePath && ctx2d && is2dCtx) {
console.log('组件挂载，开始绘制分享卡片')
// 延迟一下确保Canvas已经渲染
setTimeout(() => {
// 在微信小程序中，需要使用Taro.createCanvasContext
const ctx = Taro.createCanvasContext('shareCardCanvas')
console.log('Canvas上下文创建成功:', ctx)
drawShareCard(ctx)
console.log('使用 2D Canvas 开始绘制')
drawShareCard(ctx2d)
}, 500)
}
}, [data]) // 只依赖data，移除canvasWidth避免无限循环
}, [data, ctx2d, is2dCtx]) // 等 2D 上下文可用后再绘制
// 暴露分享方法给父组件
useEffect(() => {
@@ -666,10 +694,12 @@ const ShareCardCanvas: React.FC<ShareCardCanvasProps> = ({
<View className={`share-card-canvas ${className}`}>
<Canvas
canvasId="shareCardCanvas"
id="shareCardCanvas"
type="2d"
style={{
width: `${canvasWidth}px`,
height: `${canvasHeight}px`,
position: 'absolute', // 绝对定位避免影响布局
// position: 'absolute', // 绝对定位避免影响布局
// top: '-9999px', // 移出可视区域
// left: '-9999px'
}}

203
src/utils/share.ts
View File

@@ -43,120 +43,25 @@ const runtime: {
offscreen?: any
} = {}
// 兼容适配：将微信 CanvasContext 的 set* 方法映射到标准 Canvas 2D 属性
const polyfillCanvasContext = (ctx: any) => {
if (ctx && typeof ctx === 'object') {
if (typeof ctx.setFillStyle !== 'function') {
ctx.setFillStyle = (v: any) => { ctx.fillStyle = v }
}
if (typeof ctx.setStrokeStyle !== 'function') {
ctx.setStrokeStyle = (v: any) => { ctx.strokeStyle = v }
}
if (typeof ctx.setLineWidth !== 'function') {
ctx.setLineWidth = (v: number) => { ctx.lineWidth = v }
}
if (typeof ctx.setLineCap !== 'function') {
ctx.setLineCap = (v: any) => { ctx.lineCap = v }
}
if (typeof ctx.setLineJoin !== 'function') {
ctx.setLineJoin = (v: any) => { ctx.lineJoin = v }
}
if (typeof ctx.setTextAlign !== 'function') {
ctx.setTextAlign = (v: any) => { ctx.textAlign = v }
}
if (typeof ctx.setTextBaseline !== 'function') {
ctx.setTextBaseline = (v: any) => { ctx.textBaseline = v }
}
if (typeof ctx.setFontSize !== 'function') {
ctx.setFontSize = (size: number) => { ctx.font = `${size}px sans-serif` }
}
if (typeof ctx.setFont !== 'function') {
ctx.setFont = (fontStr: string) => { ctx.font = fontStr }
}
}
// 2D Canvas 字体设置
const setFont2D = (ctx: any, fontSize: number, family?: string, weight?: string) => {
const fam = family || 'Noto Sans SC'
const wt = weight || '500'
ctx.font = `${wt} ${fontSize}px "${fam}"`
}
// 绘制加粗文字（单行）
const drawBoldText = (ctx: any, text: string, x: number, y: number, fontSize: number, color: string, fontFamily?: string) => {
// 设置字体样式
if (fontFamily) {
try {
// 尝试使用setFont方法（如果支持）
ctx.setFont(`${fontSize}px ${fontFamily}`)
} catch (error) {
// 如果不支持setFont，回退到setFontSize
ctx.setFontSize(fontSize)
}
} else {
ctx.setFontSize(fontSize)
}
ctx.setFillStyle(color)
ctx.setTextAlign('left')
ctx.setTextBaseline('top')
// 绘制加粗效果：多次绘制并偏移
// 绘制加粗文字（单行，支持可选描边式加粗）
const drawBoldText = (ctx: any, text: string, x: number, y: number, fontSize: number, color: string, fontFamily: string = 'Noto Sans SC', fontWeight: string = '500') => {
setFont2D(ctx, fontSize, fontFamily, fontWeight)
ctx.fillStyle = color
ctx.textAlign = 'left'
ctx.textBaseline = 'top'
ctx.fillText(text, x, y)
ctx.fillText(text, x + 1, y)
ctx.fillText(text, x, y + 1)
ctx.fillText(text, x + 1, y + 1)
}
// 绘制文字（支持自动换行）- 微信小程序版本
const drawText = (ctx: any, text: string, x: number, y: number, maxWidth: number, fontSize: number, color: string, bold: boolean = false, fontFamily?: string) => {
// 设置字体样式
if (fontFamily) {
try {
// 尝试使用setFont方法（如果支持）
ctx.setFont(`${fontSize}px ${fontFamily}`)
} catch (error) {
// 如果不支持setFont，回退到setFontSize
ctx.setFontSize(fontSize)
}
} else {
ctx.setFontSize(fontSize)
}
ctx.setFillStyle(color)
ctx.setTextAlign('left')
ctx.setTextBaseline('top')
const words = text.split('')
let line = ''
let lineY = y
for (let i = 0; i < words.length; i++) {
const testLine = line + words[i]
// 微信小程序中measureText返回的是对象，需要访问width属性
const metrics = ctx.measureText(testLine)
const testWidth = metrics.width
if (testWidth > maxWidth && i > 0) {
if (bold) {
// 绘制加粗效果：多次绘制并偏移
ctx.fillText(line, x, lineY)
ctx.fillText(line, x + 1, lineY)
ctx.fillText(line, x, lineY + 1)
ctx.fillText(line, x + 1, lineY + 1)
} else {
ctx.fillText(line, x, lineY)
}
line = words[i]
lineY += fontSize * 1.2
} else {
line = testLine
}
}
if (bold) {
// 绘制加粗效果：多次绘制并偏移
ctx.fillText(line, x, lineY)
ctx.fillText(line, x + 1, lineY)
ctx.fillText(line, x, lineY + 1)
ctx.fillText(line, x + 1, lineY + 1)
} else {
ctx.fillText(line, x, lineY)
}
// if (isBold) {
// ctx.fillText(text, x + 1, y)
// ctx.fillText(text, x, y + 1)
// ctx.fillText(text, x + 1, y + 1)
// }
}
// 绘制圆角矩形函数
@@ -178,22 +83,22 @@ const drawRoundedRect = (ctx: any, x: number, y: number, width: number, height:
// 绘制标签函数（通用）
const drawLabel = (ctx: any, x: number, y: number, width: number, height: number, radius: number, text: string, fontSize: number, textColor: string = '#000000', bgColor: string = '#FFFFFF', borderColor: string = '#E0E0E0') => {
// 绘制背景
ctx.setFillStyle(bgColor)
ctx.fillStyle = bgColor
drawRoundedRect(ctx, x, y, width, height, radius)
// 绘制边框
ctx.setStrokeStyle(borderColor)
ctx.setLineWidth(1 * dpr)
ctx.strokeStyle = borderColor
ctx.lineWidth = 1 * dpr
ctx.stroke()
// 绘制文字
const textCenterX = x + width / 2
const textCenterY = y + height / 2
ctx.setFillStyle(textColor)
ctx.setTextAlign('center')
ctx.setTextBaseline('middle')
ctx.setFontSize(fontSize)
ctx.fillStyle = textColor
ctx.textAlign = 'center'
ctx.textBaseline = 'middle'
setFont2D(ctx, fontSize)
ctx.save()
ctx.translate(textCenterX, textCenterY)
@@ -201,25 +106,10 @@ const drawLabel = (ctx: any, x: number, y: number, width: number, height: number
ctx.restore()
}
// 加载图片 - 微信小程序版本
// const loadImage = (src: string): Promise<string> => {
// return new Promise((resolve, reject) => {
// Taro.getImageInfo({
// src: src,
// success: (res) => resolve(res.path),
// fail: reject
// })
// })
// }
// 工具函数 - OffscreenCanvas 下加载图片（从 runtime.offscreen 读取）
// 工具函数 - OffscreenCanvas 下加载图片（使用 offscreen.createImage）
const loadImage = (src: string): Promise<any> => {
return new Promise((resolve, reject) => {
Taro.getImageInfo({
src,
success: (res) => {
try {
// @ts-ignore - createImage 为小程序 OffscreenCanvas 能力
const off = runtime.offscreen
if (!off || typeof off.createImage !== 'function') {
throw new Error('OffscreenCanvas 未初始化或不支持 createImage')
@@ -227,23 +117,20 @@ const loadImage = (src: string): Promise<any> => {
const img = off.createImage()
img.onload = () => resolve(img)
img.onerror = reject
img.src = res.path
img.src = src
} catch (e) {
reject(e)
}
},
fail: reject
})
})
}
// 绘制SVG路径到Canvas
const drawSVGPathToCanvas = (ctx: any) => {
// 设置绘制样式
ctx.setStrokeStyle('#00E5AD');
ctx.setLineWidth(scale * 3 * dpr);
ctx.setLineCap('round');
ctx.setLineJoin('round');
ctx.strokeStyle = '#00E5AD';
ctx.lineWidth = scale * 3 * dpr;
ctx.lineCap = 'round';
ctx.lineJoin = 'round';
ctx.save();
@@ -296,7 +183,7 @@ const drawVenueImages = async (ctx: any, venueImageConfig: any) => {
ctx.rotate((rotation * Math.PI) / 180)
// 1. 先绘制白色圆角矩形背景
ctx.setFillStyle('#FFFFFF')
ctx.fillStyle = '#FFFFFF'
ctx.beginPath()
// 使用更精确的圆角矩形绘制
@@ -385,7 +272,7 @@ const drawVenueImages = async (ctx: any, venueImageConfig: any) => {
ctx.rotate((rotation * Math.PI) / 180)
// 绘制白色圆角矩形背景
ctx.setFillStyle('#FFFFFF')
ctx.fillStyle = '#FFFFFF'
ctx.beginPath()
const rectX = -playerImgSize / 2
@@ -427,7 +314,7 @@ const drawVenueImages = async (ctx: any, venueImageConfig: any) => {
const imgY = -playerImgSize / 2 + padding
const imgSize = playerImgSize - padding * 2
ctx.setFillStyle('#E0E0E0')
ctx.fillStyle = '#E0E0E0'
ctx.beginPath()
const imgRadius = borderRadius - padding
@@ -471,8 +358,6 @@ const drawShareCard = async (ctx: any, data: ShareCardData, offscreen: any): Pro
console.log('开始绘制分享卡片...')
try {
// 先对 2D 上下文做一次 API 兼容处理
polyfillCanvasContext(ctx)
// 设置Canvas的实际尺寸（使用dpr确保高清显示）
const canvasWidthPx = canvasWidth * dpr
const canvasHeightPx = canvasHeight * dpr
@@ -492,13 +377,13 @@ const drawShareCard = async (ctx: any, data: ShareCardData, offscreen: any): Pro
const gradient = ctx.createLinearGradient(0, 0, 0, canvasHeightPx)
gradient.addColorStop(0, '#BFFFEF')
gradient.addColorStop(1, '#F2FFFC')
ctx.setFillStyle(gradient)
ctx.fillStyle = gradient
ctx.fillRect(0, 0, canvasWidthPx, canvasHeightPx)
console.log('背景绘制完成')
// 绘制背景条纹 已完成
ctx.setStrokeStyle('rgba(0, 0, 0, 0.03)')
ctx.setLineWidth(2)
ctx.strokeStyle = 'rgba(0, 0, 0, 0.03)'
ctx.lineWidth = 2
for (let i = 0; i < canvasWidthPx; i += 4) {
ctx.beginPath()
ctx.moveTo(i, 0)
@@ -532,7 +417,7 @@ const drawShareCard = async (ctx: any, data: ShareCardData, offscreen: any): Pro
const nicknameX = avatarX + avatarSize + 8 * dpr // 距离头像8px
const nicknameY = avatarY + (avatarSize - 18 * dpr) / 2 // 与头像水平居中对齐
const nicknameFontSize = scale * 18 * dpr
drawText(ctx, data.userNickname, nicknameX, nicknameY, 200 * dpr, nicknameFontSize, '#000000', true, '"Noto Sans SC"')
drawBoldText(ctx, data.userNickname, nicknameX, nicknameY, nicknameFontSize, '#000000', 'Noto Sans SC', '900')
// 绘制"邀你加入球局"文案
const inviteX = scale * 35 * dpr // 距离画布左侧35px
@@ -540,12 +425,12 @@ const drawShareCard = async (ctx: any, data: ShareCardData, offscreen: any): Pro
const inviteFontSize = scale * 44 * dpr
// 绘制"邀你加入"
drawBoldText(ctx, '邀你加入', inviteX, inviteY, inviteFontSize, '#000000', "Noto Sans SC")
drawBoldText(ctx, '邀你加入', inviteX, inviteY, inviteFontSize, '#000000', 'Noto Sans SC', '900')
// 绘制"球局"特殊样式
const qiuJuX = inviteX + ctx.measureText('邀你加入').width + 4 * dpr
const qiuJuFontSize = scale * 44 * dpr
drawBoldText(ctx, '球局', qiuJuX, inviteY, qiuJuFontSize, '#00E5AD', '"Noto Sans SC"')
drawBoldText(ctx, '球局', qiuJuX, inviteY, qiuJuFontSize, '#00E5AD', 'Noto Sans SC', '900')
// 测试绘制网络图片
drawSVGPathToCanvas(ctx)
@@ -607,7 +492,7 @@ const drawShareCard = async (ctx: any, data: ShareCardData, offscreen: any): Pro
const danDaFontSize = scale * 22 * dpr
// 根据内容动态计算标签宽度（左右内边距）
const danDaPaddingX = scale * 16 * dpr
ctx.setFontSize(danDaFontSize)
setFont2D(ctx, danDaFontSize)
const danDaTextWidth = ctx.measureText(data.gameType).width
const danDaWidth = danDaTextWidth + danDaPaddingX * 2
@@ -622,7 +507,7 @@ const drawShareCard = async (ctx: any, data: ShareCardData, offscreen: any): Pro
const skillFontSize = scale * 22 * dpr
// 根据内容动态计算技能标签宽度
const skillPaddingX = scale * 20 * dpr
ctx.setFontSize(skillFontSize)
setFont2D(ctx, skillFontSize)
const skillTextWidth = ctx.measureText(data.skillLevel).width
const skillWidth = skillTextWidth + skillPaddingX * 2
@@ -635,19 +520,19 @@ const drawShareCard = async (ctx: any, data: ShareCardData, offscreen: any): Pro
const calendarPath = await loadImage(`${OSS_BASE_URL}/images/ea792a5d-b105-4c95-bfc4-8af558f2b33b.jpg`)
ctx.drawImage(calendarPath, iconX, timeInfoY, iconSize, iconSize)
// 绘制日期（绿色）
drawText(ctx, data.gameDate, dateX, timeInfoY + 8, 300, timeInfoFontSize, '#00E5AD')
// 绘制日期（绿色，非描边粗体）
drawBoldText(ctx, data.gameDate, dateX, timeInfoY + 8, timeInfoFontSize, '#00E5AD')
// 绘制时间（黑色）
const timeX = textX + ctx.measureText(data.gameDate).width + 10 * dpr
drawText(ctx, data.gameTime, timeX, timeInfoY + 8, 300, timeInfoFontSize, '#000000')
drawBoldText(ctx, data.gameTime, timeX, timeInfoY + 8, timeInfoFontSize, '#000000')
// 绘制地点
const locationInfoY = infoStartY + infoSpacing * 2
const locationFontSize = scale * 22 * dpr
const locationPath = await loadImage(`${OSS_BASE_URL}/images/adc9a167-2ea9-4e3b-b963-6a894a1fd91b.jpg`)
ctx.drawImage(locationPath, iconX, locationInfoY, iconSize, iconSize)
drawText(ctx, data.venueName, danDaX, locationInfoY + 10, 600, locationFontSize, '#000000')
drawBoldText(ctx, data.venueName, danDaX, locationInfoY + 10, locationFontSize, '#000000')
try {
const wxAny: any = (typeof (globalThis as any) !== 'undefined' && (globalThis as any).wx) ? (globalThis as any).wx : null