| 1 | /* eslint-disable no-unused-vars */ |
| 2 | /* eslint-disable no-self-assign */ |
| 3 | // import { geometryPaths } from './geometry.js' |
| 4 | // import { drawChart } from './chart.js' |
| 5 | |
| 6 | function Ppt2Canvas(_canvas, imageCrossOrigin) { |
| 7 | var canvas = (typeof _canvas == 'string') ? document.getElementById(_canvas) : _canvas |
| 8 | var ctx = canvas.getContext('2d') |
| 9 | var pptx = null |
| 10 | var page = null |
| 11 | var idMap = {} |
| 12 | var imageCache = {} |
| 13 | var pageIndex = 0 |
| 14 | var templateHandle = null |
| 15 | |
| 16 | this.drawPptx = async (pptxObj, pageIdx) => { |
| 17 | idMap = {} |
| 18 | imageCache = {} |
| 19 | pptx = pptxObj |
| 20 | pageIndex = pageIdx |
| 21 | page = pptxObj.pages[pageIdx] |
| 22 | canvas.width = canvas.width |
| 23 | canvas.height = canvas.height |
| 24 | ctx.scaleX = canvas.width / pptxObj.width |
| 25 | ctx.scaleY = canvas.height / pptxObj.height |
| 26 | ctx.scale(ctx.scaleX, ctx.scaleY) |
| 27 | ctx.interior = ctx._interior = null |
| 28 | let placeholder = {} |
| 29 | let slideMasterIdx = page.extInfo.slideMasterIdx |
| 30 | if (slideMasterIdx != null && pptxObj.slideMasters) { |
| 31 | let slideMaster = pptxObj.slideMasters[slideMasterIdx] |
| 32 | let slideLayoutIdx = page.extInfo.slideLayoutIdx |
| 33 | let slideLayout = slideLayoutIdx != null ? slideMaster.slideLayouts[slideLayoutIdx] : null |
| 34 | await drawBackground(page.extInfo.background || (slideLayout || {}).background || slideMaster.background) |
| 35 | await drawSlideMaster(slideMaster, slideLayout, placeholder) |
| 36 | if (slideLayout) { |
| 37 | await drawSlideLayout(slideLayout, placeholder) |
| 38 | } |
| 39 | } else { |
| 40 | await drawBackground(page.extInfo.background) |
| 41 | } |
| 42 | if (!page.children) { |
| 43 | return |
| 44 | } |
| 45 | recursion(page.children, obj => { |
| 46 | idMap[obj.id] = obj |
| 47 | if (obj.extInfo.property && obj.extInfo.property.placeholder) { |
| 48 | // 继承母版占位符 |
| 49 | let element_property = obj.extInfo.property |
| 50 | let placeholder_property = placeholder[element_property.placeholder.type] || {} |
| 51 | for (let k in placeholder_property) { |
| 52 | if (element_property[k] == null) { |
| 53 | element_property[k] = placeholder_property[k] |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | }) |
| 58 | for (let i = 0; i < page.children.length; i++) { |
| 59 | await drawElement(page.children[i]) |
| 60 | } |
| 61 | recursion(page.children, obj => { |
| 62 | idMap[obj.id] = obj |
| 63 | }) |
| 64 | } |
| 65 | |
| 66 | this.getCanvas = () => { |
| 67 | return canvas |
| 68 | } |
| 69 | |
| 70 | this.resetSize = (width, height) => { |
| 71 | canvas.width = width * 2 |
| 72 | canvas.height = height * 2 |
| 73 | canvas.style.width = width + 'px' |
| 74 | canvas.style.height = height + 'px' |
| 75 | if (pptx) { |
| 76 | this.drawPptx(pptx, pageIndex) |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | async function drawElement(obj) { |
| 81 | ctx.fillStyle = 'transparent' |
| 82 | ctx.strokeStyle = 'transparent' |
| 83 | if (obj.noDraw || !obj.extInfo.property.anchor || obj.extInfo.property.hidden) { |
| 84 | // console.log('ignore element:', obj) |
| 85 | return |
| 86 | } |
| 87 | if (obj.type == 'text' || obj.type == 'freeform') { |
| 88 | await drawText(obj) |
| 89 | } else if (obj.type == 'image') { |
| 90 | await drawImage(obj) |
| 91 | } else if (obj.type == 'diagram') { |
| 92 | await drawDiagram(obj) |
| 93 | } else if (obj.type == 'container') { |
| 94 | await drawContainer(obj) |
| 95 | } else if (obj.type == 'table') { |
| 96 | await drawTable(obj) |
| 97 | } else if (obj.type == 'connector') { |
| 98 | await drawConnector(obj) |
| 99 | } else if (obj.type == 'graphicFrame') { |
| 100 | await drawGraphicFrame(obj) |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | async function drawText(obj) { |
| 105 | let property = obj.extInfo.property |
| 106 | let geometryName = (property.geometry || {}).name || 'rect' |
| 107 | ctx.save() |
| 108 | shapeHandle(property) |
| 109 | let marginTop = property.strokeStyle ? (property.strokeStyle.lineWidth || 1) : 0 |
| 110 | if (geometryName == 'tableColumn') { |
| 111 | await drawTableColumn(property) |
| 112 | } else { |
| 113 | await drawGeometry(property) |
| 114 | } |
| 115 | let anchor = property.anchor |
| 116 | let cx = anchor[0] + anchor[2] / 2 |
| 117 | let cy = anchor[1] + anchor[3] / 2 |
| 118 | let x = ctx.groupFlipX || 1 |
| 119 | let y = ctx.groupFlipY || 1 |
| 120 | if (property.flipHorizontal) { |
| 121 | x *= -1 |
| 122 | } |
| 123 | if (property.flipVertical) { |
| 124 | y *= -1 |
| 125 | } |
| 126 | if (y == -1) { |
| 127 | if (x == 1) { |
| 128 | ctx.translate(cx, cy) |
| 129 | ctx.scale(-1, 1) |
| 130 | ctx.translate(-cx, -cy) |
| 131 | } |
| 132 | } else if (x == -1) { |
| 133 | ctx.translate(cx, cy) |
| 134 | ctx.scale(-1, 1) |
| 135 | ctx.translate(-cx, -cy) |
| 136 | } |
| 137 | if (templateHandle) { |
| 138 | await templateHandle('text', obj, ctx) |
| 139 | } |
| 140 | if (obj.children) { |
| 141 | let textInsets = property.textInsets || [0, 0, 0, 0] |
| 142 | let isVertical = property.textDirection && property.textDirection.indexOf('VERTICAL') > -1 |
| 143 | let verticalAlignment = property.textVerticalAlignment |
| 144 | if (!isVertical && (verticalAlignment == 'MIDDLE' || verticalAlignment == 'BOTTOM')) { |
| 145 | let totalTextHeight = calcTextHeight(obj) |
| 146 | if (totalTextHeight < property.anchor[3]) { |
| 147 | if (verticalAlignment == 'MIDDLE') { |
| 148 | marginTop += (property.anchor[3] - totalTextHeight - textInsets[0] - textInsets[2]) / 2 + textInsets[0] |
| 149 | } else if (verticalAlignment == 'BOTTOM') { |
| 150 | marginTop += (property.anchor[3] - totalTextHeight - textInsets[2]) |
| 151 | } |
| 152 | } |
| 153 | } else { |
| 154 | marginTop += textInsets[0] |
| 155 | } |
| 156 | for (let i = 0; i < obj.children.length; i++) { |
| 157 | let p = obj.children[i] |
| 158 | if (isVertical) { |
| 159 | await drawTextP(obj, p, isVertical, 0, i) |
| 160 | } else { |
| 161 | marginTop += await drawTextP(obj, p, isVertical, marginTop, i) |
| 162 | } |
| 163 | } |
| 164 | } |
| 165 | ctx.restore() |
| 166 | } |
| 167 | |
| 168 | function calcTextHeight(obj) { |
| 169 | let totalTextHeight = 0 |
| 170 | let wordWrap = obj.extInfo.property.textWordWrap ?? true |
| 171 | let textInsets = obj.extInfo.property.textInsets || [0, 0, 0, 0] |
| 172 | let wInset = textInsets[1] + textInsets[3] |
| 173 | for (let i = 0; i < obj.children.length; i++) { |
| 174 | let p = obj.children[i] |
| 175 | let lineSpacing = p.extInfo.property.lineSpacing > 0 ? (p.extInfo.property.lineSpacing / 100) : (1 + Math.abs(p.extInfo.property.lineSpacing || 0) / 100) |
| 176 | let maxFontSize = 0 |
| 177 | let underlined = false |
| 178 | let totalTextWidth = 0 |
| 179 | for (let j = 0; j < p.children.length; j++) { |
| 180 | let r_property = p.children[j].extInfo.property |
| 181 | let fontSize = r_property.fontSize || 16 |
| 182 | let text = p.children[j].text |
| 183 | if (text == '\n') { |
| 184 | totalTextHeight += lineSpacing * fontSize |
| 185 | continue |
| 186 | } |
| 187 | if (fontSize > maxFontSize) { |
| 188 | maxFontSize = fontSize |
| 189 | } |
| 190 | if (r_property.underlined) { |
| 191 | underlined = true |
| 192 | } |
| 193 | let fonts = [] |
| 194 | if (r_property.bold) { |
| 195 | fonts.push('bold') |
| 196 | } |
| 197 | if (r_property.italic) { |
| 198 | fonts.push('italic') |
| 199 | } |
| 200 | fonts.push(fontSize + 'px') |
| 201 | fonts.push('"' + (r_property.fontFamily || '等线') + '"') |
| 202 | ctx.font = fonts.join(' ') |
| 203 | let lines = text.split('\n') |
| 204 | let maxTextWidth = 0 |
| 205 | for (let s = 0; s < lines.length; s++) { |
| 206 | let width = ctx.measureText(lines[s]).width |
| 207 | if (width > maxTextWidth) { |
| 208 | maxTextWidth = width |
| 209 | } |
| 210 | } |
| 211 | totalTextWidth += maxTextWidth |
| 212 | if (lines.length > 1) { |
| 213 | totalTextHeight += (lines.length - 1) * lineSpacing * fontSize |
| 214 | } |
| 215 | } |
| 216 | if (wordWrap) { |
| 217 | let lineNum = parseInt((totalTextWidth - 1) / (obj.extInfo.property.anchor[2] - wInset)) + 1 |
| 218 | totalTextHeight += lineNum * lineSpacing * maxFontSize |
| 219 | } else { |
| 220 | totalTextHeight += lineSpacing * maxFontSize |
| 221 | } |
| 222 | if (underlined) { |
| 223 | totalTextHeight += 1 |
| 224 | } |
| 225 | } |
| 226 | return totalTextHeight |
| 227 | } |
| 228 | |
| 229 | async function drawTextP(textObj, p, isVertical, marginTop, pIdx) { |
| 230 | if (!p.children) { |
| 231 | return |
| 232 | } |
| 233 | let fontList = [] |
| 234 | let underlined = false |
| 235 | let totalTextWidth = 0 |
| 236 | let anchor = textObj.extInfo.property.anchor |
| 237 | let wordWrap = textObj.extInfo.property.textWordWrap ?? true |
| 238 | for (let i = 0; i < p.children.length; i++) { |
| 239 | let r = p.children[i] |
| 240 | let property = r.extInfo.property |
| 241 | let fontSize = property.fontSize || 16 |
| 242 | let fonts = [] |
| 243 | if (property.bold) { |
| 244 | fonts.push('bold') |
| 245 | } |
| 246 | if (property.italic) { |
| 247 | fonts.push('italic') |
| 248 | } |
| 249 | if (property.slideNum) { |
| 250 | r.text = (pageIndex + 1) + '' |
| 251 | } |
| 252 | fonts.push(fontSize + 'px') |
| 253 | fonts.push('"' + (property.fontFamily || '等线') + '"') |
| 254 | let font = fonts.join(' ') |
| 255 | fontList.push(font) |
| 256 | ctx.font = font |
| 257 | if (isVertical) { |
| 258 | if (property.lang == 'en-US' && /^[0-9a-zA-Z]+$/.test(r.text)) { |
| 259 | if (fontSize > totalTextWidth) { |
| 260 | totalTextWidth = fontSize |
| 261 | } |
| 262 | } else if (r.text.length > 0) { |
| 263 | let width = ctx.measureText(r.text[0]).width |
| 264 | if (width > totalTextWidth) { |
| 265 | totalTextWidth = width |
| 266 | } |
| 267 | } |
| 268 | } else { |
| 269 | let lines = r.text.split('\n') |
| 270 | let maxTextWidth = 0 |
| 271 | for (let s = 0; s < lines.length; s++) { |
| 272 | let width = ctx.measureText(lines[s]).width |
| 273 | if (width > maxTextWidth) { |
| 274 | maxTextWidth = width |
| 275 | } |
| 276 | } |
| 277 | totalTextWidth += maxTextWidth |
| 278 | } |
| 279 | if (property.underlined) { |
| 280 | underlined = true |
| 281 | } |
| 282 | } |
| 283 | if (wordWrap) { |
| 284 | totalTextWidth = Math.min(totalTextWidth, anchor[2]) |
| 285 | } |
| 286 | let textAlign = p.extInfo.property.textAlign |
| 287 | let verticalAlignment = textObj.extInfo.property.textVerticalAlignment |
| 288 | let textInsets = textObj.extInfo.property.textInsets || [0, 0, 0, 0] |
| 289 | let lineSpacing = p.extInfo.property.lineSpacing > 0 ? (p.extInfo.property.lineSpacing / 100) : (1 + Math.abs(p.extInfo.property.lineSpacing || 0) / 100) |
| 290 | let x = anchor[0] |
| 291 | let y = anchor[1] + (marginTop || 0) |
| 292 | let endX = anchor[0] + anchor[2] - textInsets[3] |
| 293 | ctx.textAlign = 'left' |
| 294 | ctx.textBaseline = 'top' |
| 295 | if (textAlign == 'CENTER') { |
| 296 | x = x + (anchor[2] - totalTextWidth - textInsets[1] - textInsets[3]) / 2 + textInsets[1] |
| 297 | } else if (textAlign == 'RIGHT') { |
| 298 | x = x + anchor[2] - textInsets[3] - totalTextWidth |
| 299 | } else { |
| 300 | x = x + textInsets[1] |
| 301 | } |
| 302 | const _x = x |
| 303 | const _y = y |
| 304 | let lastWord = null |
| 305 | let maxFontSize = 0 |
| 306 | for (let i = 0; i < p.children.length; i++) { |
| 307 | let r = p.children[i] |
| 308 | let property = r.extInfo.property |
| 309 | let fontSize = property.fontSize || 16 |
| 310 | let drawString = (s, x, y) => { |
| 311 | doShadow(ctx, property.shadow) |
| 312 | ctx.translate(x, y) |
| 313 | ctx.fillText(s, 0, 0) |
| 314 | ctx.translate(-x, -y) |
| 315 | } |
| 316 | let fillStyle = await toPaint(property.fontColor, anchor) |
| 317 | ctx.fillStyle = fillStyle |
| 318 | if (property.line && (property.fontColor == null || property.fontColor.type == 'noFill')) { |
| 319 | drawString = (s, x, y) => { |
| 320 | doShadow(ctx, property.shadow) |
| 321 | ctx.translate(x, y) |
| 322 | ctx.strokeText(s, 0, 0) |
| 323 | ctx.translate(-x, -y) |
| 324 | } |
| 325 | ctx.strokeStyle = await toPaint(property.line.paint, anchor) |
| 326 | } |
| 327 | ctx.font = fontList[i] |
| 328 | if (fontSize > maxFontSize) { |
| 329 | maxFontSize = fontSize |
| 330 | } |
| 331 | if (r.text == '\n') { |
| 332 | y += lineSpacing * fontSize |
| 333 | x = _x |
| 334 | continue |
| 335 | } |
| 336 | if (isVertical) { |
| 337 | // 竖版 |
| 338 | x = x + fontSize * pIdx |
| 339 | if (property.lang == 'en-US' && /^[0-9a-zA-Z]+$/.test(r.text)) { |
| 340 | // 数字英文竖着的时候需要旋转90°方式呈现 |
| 341 | let textWidth = ctx.measureText(r.text).width |
| 342 | let fontSize = property.fontSize || 16 |
| 343 | ctx.save() |
| 344 | ctx.translate(x, y + fontSize) |
| 345 | ctx.rotate(90 * Math.PI / 180) |
| 346 | ctx.translate(-x, -y - fontSize) |
| 347 | drawString(r.text, x - fontSize, y) |
| 348 | ctx.restore() |
| 349 | y += textWidth |
| 350 | } else { |
| 351 | for (let j = 0; j < r.text.length; j++) { |
| 352 | let text = r.text[j] |
| 353 | drawString(text, x, y) |
| 354 | y += fontSize |
| 355 | } |
| 356 | } |
| 357 | if (property.underlined) { |
| 358 | let lineX = x |
| 359 | let lineY = _y |
| 360 | ctx.lineWidth = 1 |
| 361 | ctx.strokeStyle = fillStyle |
| 362 | ctx.beginPath() |
| 363 | ctx.moveTo(lineX, lineY) |
| 364 | ctx.lineTo(lineX, lineY + (y - _y)) |
| 365 | ctx.closePath() |
| 366 | ctx.stroke() |
| 367 | } |
| 368 | } else if (wordWrap) { |
| 369 | // 横版-自动换行 |
| 370 | let texts = splitWords(r.text) |
| 371 | let drawLine = (textWidth) => { |
| 372 | if (property.underlined) { |
| 373 | let lineX = _x |
| 374 | let lineY = y |
| 375 | if (verticalAlignment == 'MIDDLE') { |
| 376 | lineY = lineY + fontSize / 2 + 1 |
| 377 | } else if (verticalAlignment == 'BOTTOM') { |
| 378 | lineY = lineY + 1 |
| 379 | } else { |
| 380 | lineY = lineY + fontSize + 1 |
| 381 | } |
| 382 | ctx.lineWidth = 1 |
| 383 | ctx.strokeStyle = fillStyle |
| 384 | ctx.beginPath() |
| 385 | ctx.moveTo(lineX, lineY) |
| 386 | ctx.lineTo(lineX + textWidth, lineY) |
| 387 | ctx.closePath() |
| 388 | ctx.stroke() |
| 389 | } |
| 390 | } |
| 391 | for (let j = 0; j < texts.length; j++) { |
| 392 | let item = texts[j] |
| 393 | if (item.text == '\n') { |
| 394 | x = _x |
| 395 | y += lineSpacing * fontSize |
| 396 | lastWord = null |
| 397 | continue |
| 398 | } |
| 399 | if (item.word && lastWord != null && !lastWord) { |
| 400 | let textWidth = ctx.measureText(item.text).width |
| 401 | if (x + textWidth > endX + fontSize / 4) { |
| 402 | drawLine(x - _x) |
| 403 | x = _x |
| 404 | y += lineSpacing * fontSize |
| 405 | } |
| 406 | } |
| 407 | for (let s = 0; s < item.text.length; s++) { |
| 408 | let text = item.text[s] |
| 409 | let textWidth = ctx.measureText(text).width |
| 410 | if (x + textWidth > endX + fontSize / 4 && !isSymbol(text)) { |
| 411 | drawLine(x - _x) |
| 412 | x = _x |
| 413 | y += lineSpacing * fontSize |
| 414 | } |
| 415 | let ty = y |
| 416 | if (verticalAlignment == 'MIDDLE') { |
| 417 | ctx.textBaseline = 'middle' |
| 418 | ty = ty + (lineSpacing * fontSize) / 2 |
| 419 | } else if (verticalAlignment == 'BOTTOM') { |
| 420 | ctx.textBaseline = 'bottom' |
| 421 | ty = ty + (lineSpacing * fontSize) |
| 422 | } else { |
| 423 | ctx.textBaseline = 'top' |
| 424 | } |
| 425 | drawString(text, x, ty) |
| 426 | x += textWidth |
| 427 | } |
| 428 | lastWord = item.word |
| 429 | } |
| 430 | if (i == p.children.length - 1) { |
| 431 | drawLine(x - _x) |
| 432 | } |
| 433 | } else { |
| 434 | // 横版-不自动换行 |
| 435 | let lines = r.text.split('\n') |
| 436 | for (let s = 0; s < lines.length; s++) { |
| 437 | if (s != 0) { |
| 438 | x = _x |
| 439 | y += lineSpacing * fontSize |
| 440 | } |
| 441 | let ty = y |
| 442 | if (verticalAlignment == 'MIDDLE') { |
| 443 | ctx.textBaseline = 'middle' |
| 444 | ty = ty + (lineSpacing * fontSize) / 2 |
| 445 | } else if (verticalAlignment == 'BOTTOM') { |
| 446 | ctx.textBaseline = 'bottom' |
| 447 | ty = ty + (lineSpacing * fontSize) |
| 448 | } else { |
| 449 | ctx.textBaseline = 'top' |
| 450 | } |
| 451 | drawString(lines[s], x, ty) |
| 452 | let textWidth = ctx.measureText(lines[s]).width |
| 453 | if (property.underlined) { |
| 454 | let lineX = x |
| 455 | let lineY = y |
| 456 | if (verticalAlignment == 'MIDDLE') { |
| 457 | lineY = lineY + fontSize / 2 + 1 |
| 458 | } else if (verticalAlignment == 'BOTTOM') { |
| 459 | lineY = lineY + 1 |
| 460 | } else { |
| 461 | lineY = lineY + fontSize + 1 |
| 462 | } |
| 463 | ctx.lineWidth = 1 |
| 464 | ctx.strokeStyle = fillStyle |
| 465 | ctx.beginPath() |
| 466 | ctx.moveTo(lineX, lineY) |
| 467 | ctx.lineTo(lineX + textWidth, lineY) |
| 468 | ctx.closePath() |
| 469 | ctx.stroke() |
| 470 | } |
| 471 | x += textWidth |
| 472 | } |
| 473 | } |
| 474 | } |
| 475 | return (y - _y) + (underlined && !isVertical ? 1 : 0) + lineSpacing * maxFontSize |
| 476 | } |
| 477 | |
| 478 | async function drawImage(obj) { |
| 479 | let property = obj.extInfo.property |
| 480 | ctx.save() |
| 481 | shapeHandle(property) |
| 482 | if (property.fillStyle && property.fillStyle.texture) { |
| 483 | property.fillStyle.texture.imageData = property.image |
| 484 | // 图片自带拉伸 |
| 485 | property.fillStyle.texture.stretch = property.fillStyle.texture.stretch || [0, 0, 0, 0] |
| 486 | } else { |
| 487 | property.fillStyle = { 'type': 'texture', texture: { 'imageData': property.image, insets: property.clipping, stretch: [0, 0, 0, 0] } } |
| 488 | } |
| 489 | if (!property.geometry) { |
| 490 | property.geometry = { name: 'rect' } |
| 491 | } |
| 492 | await drawGeometry(property) |
| 493 | if (templateHandle) { |
| 494 | await templateHandle('image', obj, ctx) |
| 495 | } |
| 496 | ctx.restore() |
| 497 | } |
| 498 | |
| 499 | async function drawTableColumn(property) { |
| 500 | let anchor = property.anchor |
| 501 | let x = anchor[0] - 1 |
| 502 | let endX = anchor[0] + anchor[2] + 1 |
| 503 | let y = anchor[1] - 1 |
| 504 | let endY = anchor[1] + anchor[3] + 1 |
| 505 | let borders = property.borders // top/left/bottom/right |
| 506 | ctx.beginPath() |
| 507 | ctx.moveTo(x, y) |
| 508 | let top = borders[0] |
| 509 | ctx.strokeStyle = toColor({ color: top.color }, 'white') |
| 510 | ctx.lineWidth = top.lineWidth |
| 511 | ctx.lineTo(endX, y) |
| 512 | let right = borders[3] |
| 513 | ctx.strokeStyle = toColor({ color: right.color }, 'white') |
| 514 | ctx.lineWidth = right.lineWidth |
| 515 | ctx.lineTo(endX, endY) |
| 516 | let bottom = borders[2] |
| 517 | ctx.strokeStyle = toColor({ color: bottom.color }, 'white') |
| 518 | ctx.lineWidth = bottom.lineWidth |
| 519 | ctx.lineTo(x, endY) |
| 520 | let left = borders[1] |
| 521 | ctx.strokeStyle = toColor({ color: left.color }, 'white') |
| 522 | ctx.lineWidth = left.lineWidth |
| 523 | ctx.lineTo(x, anchor[1]) |
| 524 | ctx.closePath() |
| 525 | ctx.fillStyle = await toPaint(property.fillStyle, property.anchor) |
| 526 | ctx.fill() |
| 527 | ctx.stroke() |
| 528 | } |
| 529 | |
| 530 | async function drawDiagram(obj) { |
| 531 | let property = obj.extInfo.property |
| 532 | ctx.save() |
| 533 | ctx.translate(property.anchor[0], property.anchor[1]) |
| 534 | if (templateHandle) { |
| 535 | await templateHandle('diagram', obj, ctx) |
| 536 | } |
| 537 | for (let i = 0; i < obj.children.length; i++) { |
| 538 | await drawElement(obj.children[i]) |
| 539 | } |
| 540 | ctx.translate(-property.anchor[0], -property.anchor[1]) |
| 541 | ctx.restore() |
| 542 | } |
| 543 | |
| 544 | async function drawContainer(obj) { |
| 545 | let property = obj.extInfo.property |
| 546 | if (property.realType == 'Group') { |
| 547 | ctx.save() |
| 548 | let _groupFlipX = ctx.groupFlipX |
| 549 | let _groupFlipY = ctx.groupFlipY |
| 550 | let _groupRotation = ctx.groupRotation |
| 551 | if (templateHandle) { |
| 552 | await templateHandle('container', obj, ctx) |
| 553 | } |
| 554 | shapeHandle(property) |
| 555 | let parentGroupFillStyle = ctx.groupFillStyle |
| 556 | let groupFillStyle = property.groupFillStyle |
| 557 | if (groupFillStyle) { |
| 558 | groupFillStyle = JSON.parse(JSON.stringify(groupFillStyle)) |
| 559 | groupFillStyle.groupAnchor = property.anchor |
| 560 | if (parentGroupFillStyle) { |
| 561 | groupFillStyle.parentGroupFillStyle = parentGroupFillStyle |
| 562 | } |
| 563 | } |
| 564 | ctx.groupFillStyle = groupFillStyle |
| 565 | let copyChildren = JSON.parse(JSON.stringify(obj.children)) |
| 566 | recursionGroupChildren(copyChildren, c => { |
| 567 | if (c.extInfo && c.extInfo.property && c.extInfo.property.anchor) { |
| 568 | let anchor = c.extInfo.property.anchor |
| 569 | anchor[0] *= ctx.interior.scaleX |
| 570 | anchor[1] *= ctx.interior.scaleY |
| 571 | anchor[2] *= ctx.interior.scaleX |
| 572 | anchor[3] *= ctx.interior.scaleY |
| 573 | } |
| 574 | }) |
| 575 | for (let i = 0; i < copyChildren.length; i++) { |
| 576 | await drawElement(copyChildren[i]) |
| 577 | } |
| 578 | ctx.interior = ctx._interior |
| 579 | ctx.groupFlipX = _groupFlipX |
| 580 | ctx.groupFlipY = _groupFlipY |
| 581 | ctx.groupRotation = _groupRotation |
| 582 | ctx.restore() |
| 583 | } else { |
| 584 | for (let i = 0; i < obj.children.length; i++) { |
| 585 | await drawElement(obj.children[i]) |
| 586 | } |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | function recursionGroupChildren(children, fn) { |
| 591 | if (!children) { |
| 592 | return |
| 593 | } |
| 594 | for (let i = 0; i < children.length; i++) { |
| 595 | let c = children[i] |
| 596 | fn(c) |
| 597 | if (c.extInfo && c.extInfo.property.realType == 'Group') { |
| 598 | continue |
| 599 | } |
| 600 | if (c.children && c.children.length > 0) { |
| 601 | recursionGroupChildren(c.children, fn) |
| 602 | } |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | async function drawConnector(obj) { |
| 607 | let property = obj.extInfo.property |
| 608 | ctx.save() |
| 609 | shapeHandle(property) |
| 610 | await drawGeometry(property) |
| 611 | if (templateHandle) { |
| 612 | await templateHandle('connector', obj, ctx) |
| 613 | } |
| 614 | ctx.restore() |
| 615 | } |
| 616 | |
| 617 | async function drawGraphicFrame(obj) { |
| 618 | let property = obj.extInfo.property |
| 619 | ctx.save() |
| 620 | shapeHandle(property) |
| 621 | if (templateHandle) { |
| 622 | await templateHandle('graphicFrame', obj, ctx) |
| 623 | } |
| 624 | if (property.chart && property.chart.chartData && property.chart.chartData.length > 0) { |
| 625 | await drawChart(property.chart, property.anchor, canvas, ctx) |
| 626 | } |
| 627 | ctx.restore() |
| 628 | } |
| 629 | |
| 630 | async function drawTable(obj) { |
| 631 | let property = obj.extInfo.property |
| 632 | for (let i = 0; i < obj.children.length; i++) { |
| 633 | let row = obj.children[i] |
| 634 | await drawTableRow(obj, row) |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | async function drawTableRow(table, row) { |
| 639 | let property = row.extInfo.property |
| 640 | for (let i = 0; i < row.children.length; i++) { |
| 641 | let column = row.children[i] |
| 642 | await drawText(column) |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | async function drawGeometry(property) { |
| 647 | let geometry = property.geometry |
| 648 | let anchor = property.anchor |
| 649 | if (!geometry || !anchor || (anchor[2] == 0 && anchor[3] == 0)) { |
| 650 | return |
| 651 | } |
| 652 | ctx.save() |
| 653 | ctx.translate(anchor[0], anchor[1]) |
| 654 | let paths = geometryPaths(property) |
| 655 | let _anchor = [0, 0, anchor[2], anchor[3]] |
| 656 | if (geometry.name == 'custom') { |
| 657 | await drawPaths(paths, property, _anchor, anchor) |
| 658 | } else if (geometry.name == 'line' || geometry.name == 'straightConnector1') { |
| 659 | await drawPaths(paths, property, _anchor, anchor) |
| 660 | } else { |
| 661 | await drawPaths(paths, property, _anchor, anchor) |
| 662 | } |
| 663 | ctx.translate(-anchor[0], -anchor[1]) |
| 664 | ctx.restore() |
| 665 | } |
| 666 | |
| 667 | async function drawPaths(paths, property, anchor, real_anchor) { |
| 668 | for (let i = 0; i < paths.length; i++) { |
| 669 | let path = paths[i] |
| 670 | // console.log('path: ', path) |
| 671 | ctx.save() |
| 672 | let scaleX = path.scaleX |
| 673 | let scaleY = path.scaleY |
| 674 | ctx.scale(scaleX, scaleY) |
| 675 | let _anchor = [anchor[0], anchor[1], anchor[2], anchor[3]] |
| 676 | if (scaleX != 1 || scaleY != 1) { |
| 677 | _anchor[0] = _anchor[0] / scaleX |
| 678 | _anchor[1] = _anchor[1] / scaleY |
| 679 | _anchor[2] = _anchor[2] / scaleX |
| 680 | _anchor[3] = _anchor[3] / scaleY |
| 681 | } |
| 682 | ctx.beginPath() |
| 683 | let split = path.path.replace(/\s+/g, ' ').trim().split(' ') |
| 684 | for (let j = 0; j < split.length; j++) { |
| 685 | switch (split[j]) { |
| 686 | case 'M': |
| 687 | ctx.moveTo(split[++j], split[++j]) |
| 688 | break |
| 689 | case 'L': |
| 690 | ctx.lineTo(split[++j], split[++j]) |
| 691 | break |
| 692 | case 'Q': |
| 693 | ctx.quadraticCurveTo(split[++j], split[++j], split[++j], split[++j]) |
| 694 | break |
| 695 | case 'C': |
| 696 | ctx.bezierCurveTo(split[++j], split[++j], split[++j], split[++j], split[++j], split[++j]) |
| 697 | break |
| 698 | case 'Z': |
| 699 | ctx.closePath() |
| 700 | break |
| 701 | } |
| 702 | } |
| 703 | let strokeStyle = null |
| 704 | if (property.strokeStyle) { |
| 705 | ctx.lineWidth = (property.strokeStyle.lineWidth || 1) / scaleY |
| 706 | let lineCap = property.strokeStyle.lineCap |
| 707 | if (!lineCap || lineCap == 'FLAT') { |
| 708 | lineCap = 'butt' |
| 709 | } |
| 710 | ctx.lineCap = lineCap.toLowerCase() |
| 711 | strokeStyle = await toPaint(property.strokeStyle.paint, _anchor) |
| 712 | } |
| 713 | doShadow(ctx, property.shadow) |
| 714 | if (path.stroked && strokeStyle) { |
| 715 | ctx.strokeStyle = strokeStyle |
| 716 | } else { |
| 717 | ctx.strokeStyle = 'transparent' |
| 718 | } |
| 719 | ctx.stroke() |
| 720 | ctx.scale(1 / scaleX, 1 / scaleY) |
| 721 | let fillStyle = await toPaint(property.fillStyle, anchor) |
| 722 | if (path.filled) { |
| 723 | ctx.fillStyle = fillStyle |
| 724 | } else { |
| 725 | ctx.fillStyle = 'transparent' |
| 726 | } |
| 727 | if (property.fillStyle && property.fillStyle.type == 'bgFill') { |
| 728 | let rotation = (property.rotation || 0) + (ctx.groupRotation || 0) |
| 729 | if (rotation) { |
| 730 | ctx.translate(real_anchor[2] / 2, real_anchor[3] / 2) |
| 731 | ctx.rotate(-rotation * Math.PI / 180) |
| 732 | ctx.translate(-real_anchor[2] / 2, -real_anchor[3] / 2) |
| 733 | } |
| 734 | let tx = 0, ty = 0 |
| 735 | if (ctx.interior) { |
| 736 | tx = -ctx.interior.tx - real_anchor[0] |
| 737 | ty = -ctx.interior.ty - real_anchor[1] |
| 738 | } else { |
| 739 | tx = -real_anchor[0] |
| 740 | ty = -real_anchor[1] |
| 741 | } |
| 742 | ctx.translate(tx, ty) |
| 743 | ctx.fill() |
| 744 | ctx.translate(-tx, -ty) |
| 745 | } else { |
| 746 | ctx.fill() |
| 747 | } |
| 748 | ctx.restore() |
| 749 | } |
| 750 | } |
| 751 | |
| 752 | function shapeHandle(property) { |
| 753 | let anchor = property.anchor |
| 754 | if (!anchor) { |
| 755 | return |
| 756 | } |
| 757 | let cx = anchor[0] + anchor[2] / 2 |
| 758 | let cy = anchor[1] + anchor[3] / 2 |
| 759 | if (property.rotation) { |
| 760 | // 旋转 |
| 761 | ctx.translate(cx, cy) |
| 762 | ctx.rotate(property.rotation * Math.PI / 180) |
| 763 | ctx.translate(-cx, -cy) |
| 764 | if (property.realType == 'Group') { |
| 765 | ctx.groupRotation = (ctx.groupRotation || 0) + property.rotation |
| 766 | } |
| 767 | } |
| 768 | if (property.flipVertical) { |
| 769 | ctx.translate(cx, cy) |
| 770 | ctx.scale(1, -1) |
| 771 | ctx.translate(-cx, -cy) |
| 772 | if (property.realType == 'Group') { |
| 773 | ctx.groupFlipY = -(ctx.groupFlipY || 1) |
| 774 | } |
| 775 | } |
| 776 | if (property.flipHorizontal) { |
| 777 | ctx.translate(cx, cy) |
| 778 | ctx.scale(-1, 1) |
| 779 | ctx.translate(-cx, -cy) |
| 780 | if (property.realType == 'Group') { |
| 781 | ctx.groupFlipX = -(ctx.groupFlipX || 1) |
| 782 | } |
| 783 | } |
| 784 | // 嵌套容器 Group |
| 785 | let interior = property.interiorAnchor |
| 786 | if (interior && interior.length > 0) { |
| 787 | /* |
| 788 | // 缩放 |
| 789 | let scaleX = interior[2] == 0 || anchor[2] == interior[2] ? 1 : anchor[2] / interior[2] |
| 790 | let scaleY = interior[3] == 0 || anchor[3] == interior[3] ? 1 : anchor[3] / interior[3] |
| 791 | ctx.scale(scaleX, scaleY) |
| 792 | ctx.translate(anchor[0] / scaleX - interior[0], anchor[1] / scaleY - interior[1]) |
| 793 | */ |
| 794 | let scaleX = interior[2] == 0 || anchor[2] == interior[2] ? 1 : anchor[2] / interior[2] |
| 795 | let scaleY = interior[3] == 0 || anchor[3] == interior[3] ? 1 : anchor[3] / interior[3] |
| 796 | let tx = anchor[0] - interior[0] * scaleX |
| 797 | let ty = anchor[1] - interior[1] * scaleY |
| 798 | ctx.translate(tx, ty) |
| 799 | ctx._interior = ctx.interior |
| 800 | ctx.interior = { scaleX, scaleY, tx, ty } |
| 801 | } else if (property.realType == 'Group') { |
| 802 | ctx._interior = ctx.interior |
| 803 | ctx.interior = { scaleX: 1, scaleY: 1, tx: 0, ty: 0 } |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | async function drawBackground(background) { |
| 808 | if (!background) { |
| 809 | ctx.bgFillStyle = null |
| 810 | return |
| 811 | } |
| 812 | ctx.fillStyle = await toPaint(background.fillStyle, background.anchor, true) |
| 813 | ctx.fillRect(background.anchor[0], background.anchor[1], background.anchor[2], background.anchor[3]) |
| 814 | ctx.bgFillStyle = ctx.fillStyle |
| 815 | } |
| 816 | |
| 817 | async function drawSlideMaster(slideMaster, slideLayout, placeholder) { |
| 818 | recursion(slideMaster.children, obj => { |
| 819 | if (obj.extInfo.property && obj.extInfo.property.placeholder) { |
| 820 | obj.noDraw = true |
| 821 | placeholder[obj.extInfo.property.placeholder.type] = obj.extInfo.property |
| 822 | } |
| 823 | }) |
| 824 | if (slideLayout && slideLayout.noMaster) { |
| 825 | return |
| 826 | } |
| 827 | for (let i = 0; slideMaster.children && i < slideMaster.children.length; i++) { |
| 828 | await drawElement(slideMaster.children[i]) |
| 829 | } |
| 830 | } |
| 831 | |
| 832 | async function drawSlideLayout(slideLayout, placeholder) { |
| 833 | recursion(slideLayout.children, obj => { |
| 834 | if (obj.extInfo.property && obj.extInfo.property.placeholder) { |
| 835 | obj.noDraw = true |
| 836 | placeholder[obj.extInfo.property.placeholder.type] = obj.extInfo.property |
| 837 | } |
| 838 | }) |
| 839 | for (let i = 0; slideLayout.children && i < slideLayout.children.length; i++) { |
| 840 | await drawElement(slideLayout.children[i]) |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | function recursion(children, fn) { |
| 845 | if (!children) { |
| 846 | return |
| 847 | } |
| 848 | for (let i = 0; i < children.length; i++) { |
| 849 | let c = children[i] |
| 850 | fn(c) |
| 851 | if (c.children && c.children.length > 0) { |
| 852 | recursion(c.children, fn) |
| 853 | } |
| 854 | } |
| 855 | } |
| 856 | |
| 857 | function doShadow(ctx, shadow) { |
| 858 | if (!shadow) { |
| 859 | return |
| 860 | } |
| 861 | ctx.shadowBlur = shadow.blur || 0 |
| 862 | ctx.shadowColor = toColor(shadow.fillStyle.color) |
| 863 | if (shadow.distance) { |
| 864 | let radians = (shadow.angle || 0) * Math.PI / 180 |
| 865 | let x = 0, y = 0, r = shadow.distance * 2 |
| 866 | ctx.shadowOffsetX = x + r * Math.cos(radians) |
| 867 | ctx.shadowOffsetY = y + r * Math.sin(radians) |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | function toPaint(paint, anchor, isBackground, defaultColor) { |
| 872 | return new Promise((resolve, reject) => { |
| 873 | if (!paint) { |
| 874 | resolve(defaultColor || 'transparent') |
| 875 | } else if (paint.type == 'noFill') { |
| 876 | // 无填充 |
| 877 | resolve('transparent') |
| 878 | } else if (paint.type == 'color') { |
| 879 | // 颜色 |
| 880 | resolve(toColor(paint.color, defaultColor)) |
| 881 | } else if (paint.type == 'bgFill') { |
| 882 | // 背景填充 |
| 883 | resolve(ctx.bgFillStyle || defaultColor || 'transparent') |
| 884 | } else if (paint.type == 'groupFill') { |
| 885 | // 组合背景 |
| 886 | let groupFillStyle = paint.parentGroupFillStyle || ctx.groupFillStyle |
| 887 | if (groupFillStyle) { |
| 888 | toPaint(groupFillStyle, anchor || groupFillStyle.groupAnchor, false, defaultColor).then(res => { |
| 889 | resolve(res) |
| 890 | }) |
| 891 | } else { |
| 892 | resolve(defaultColor || 'transparent') |
| 893 | } |
| 894 | } else if (paint.type == 'gradient') { |
| 895 | // 渐变 |
| 896 | let gradient = paint.gradient |
| 897 | let x = anchor[0], y = anchor[1], width = anchor[2], height = anchor[3] |
| 898 | let centerX = x + width / 2 |
| 899 | let centerY = y + height / 2 |
| 900 | let gradientObj |
| 901 | // linear,circular,rectangular,shape |
| 902 | if (gradient.gradientType == 'circular') { |
| 903 | // 射线 |
| 904 | let radius = Math.sqrt(width * width + height * height) * (gradient.insets[1] == 0.5 ? 0.5 : 1) |
| 905 | let cx = centerX + width * (gradient.insets[1] - gradient.insets[3]) / 2 |
| 906 | let cy = centerY + height * (gradient.insets[0] - gradient.insets[2]) / 2 |
| 907 | gradientObj = ctx.createRadialGradient(cx, cy, 0, cx, cy, radius) |
| 908 | } else { |
| 909 | // 线性 |
| 910 | let startX = x |
| 911 | let startY = centerY |
| 912 | let endX = x + width |
| 913 | let endY = centerY |
| 914 | if (gradient.angle) { |
| 915 | let radians = gradient.angle * Math.PI / 180 |
| 916 | let midX = (startX + endX) / 2 |
| 917 | let midY = (startY + endY) / 2 |
| 918 | let newStartX = midX + (startX - midX) * Math.cos(radians) - (startY - midY) * Math.sin(radians) |
| 919 | let newStartY = midY + (startX - midX) * Math.sin(radians) + (startY - midY) * Math.cos(radians) |
| 920 | let newEndX = midX + (endX - midX) * Math.cos(radians) - (endY - midY) * Math.sin(radians) |
| 921 | let newEndY = midY + (endX - midX) * Math.sin(radians) + (endY - midY) * Math.cos(radians) |
| 922 | startX = newStartX |
| 923 | startY = newStartY |
| 924 | endX = newEndX |
| 925 | endY = newEndY |
| 926 | } |
| 927 | gradientObj = ctx.createLinearGradient(startX, startY, endX, endY) |
| 928 | } |
| 929 | for (let i = 0; i < gradient.colors.length; i++) { |
| 930 | let color = gradient.colors[i] |
| 931 | gradientObj.addColorStop(gradient.fractions[i], toColor(color)) |
| 932 | } |
| 933 | resolve(gradientObj) |
| 934 | } else if (anchor && anchor[2] == 0 && anchor[3] == 0) { |
| 935 | resolve('transparent') |
| 936 | } else if (paint.type == 'texture') { |
| 937 | // 图片或纹理 |
| 938 | let texture = paint.texture |
| 939 | let anonymous = texture.duoTone && texture.duoTone.length > 0 && texture.duoTonePrst |
| 940 | loadImage(texture.imageData, anonymous).then(img => { |
| 941 | if (img) { |
| 942 | let pat = createTexturePattern(img, texture, anchor, isBackground) |
| 943 | resolve(pat) |
| 944 | } else { |
| 945 | resolve('transparent') |
| 946 | } |
| 947 | }) |
| 948 | } else if (paint.type == 'pattern') { |
| 949 | // 图案 |
| 950 | let pattern = paint.pattern |
| 951 | // let prst = pattern.prst |
| 952 | let fgColor = pattern.fgColor.realColor |
| 953 | let bgColor = pattern.bgColor.realColor |
| 954 | let width = anchor[2], height = anchor[3] |
| 955 | let imgCanvas = document.createElement('canvas') |
| 956 | imgCanvas.width = width |
| 957 | imgCanvas.height = height |
| 958 | let imgCtx = imgCanvas.getContext('2d') |
| 959 | imgCtx.imageSmoothingEnabled = true |
| 960 | imgCtx.imageSmoothingQuality = 'high' |
| 961 | let imgData = imgCtx.createImageData(width, height) |
| 962 | let line = 0 |
| 963 | for (let i = 0; i < imgData.data.length; i += 4) { |
| 964 | if (++line % 16 == 0) { |
| 965 | // 前景 |
| 966 | imgData.data[i + 0] = (fgColor >> 16) & 255 |
| 967 | imgData.data[i + 1] = (fgColor >> 8) & 255 |
| 968 | imgData.data[i + 2] = (fgColor >> 0) & 255 |
| 969 | imgData.data[i + 3] = (fgColor >> 24) & 255 |
| 970 | } else { |
| 971 | // 背景 |
| 972 | imgData.data[i + 0] = (bgColor >> 16) & 255 |
| 973 | imgData.data[i + 1] = (bgColor >> 8) & 255 |
| 974 | imgData.data[i + 2] = (bgColor >> 0) & 255 |
| 975 | imgData.data[i + 3] = (bgColor >> 24) & 255 |
| 976 | } |
| 977 | if (i % 400 == 0) { |
| 978 | line += 2 |
| 979 | } |
| 980 | } |
| 981 | imgCtx.putImageData(imgData, 0, 0) |
| 982 | let imgSrc = imgCanvas.toDataURL() |
| 983 | let image = new Image() |
| 984 | image.src = imgSrc |
| 985 | image.onload = async function() { |
| 986 | resolve(ctx.createPattern(image, 'no-repeat')) |
| 987 | } |
| 988 | } |
| 989 | }) |
| 990 | } |
| 991 | |
| 992 | function createTexturePattern(img, texture, anchor, isBackground) { |
| 993 | let width = anchor[2] |
| 994 | let height = anchor[3] |
| 995 | let mode = texture.alignment || !texture.stretch ? 'repeat' : 'no-repeat' |
| 996 | if (width < 1 && height < 1 || isNaN(width) || isNaN(height)) { |
| 997 | return ctx.createPattern(img, mode) |
| 998 | } |
| 999 | if (texture.alignment || !texture.stretch) { |
| 1000 | width = img.width |
| 1001 | height = img.height |
| 1002 | } |
| 1003 | let patternCanvas = document.createElement('canvas') |
| 1004 | patternCanvas.width = Math.max(1, width) |
| 1005 | patternCanvas.height = Math.max(1, height) |
| 1006 | let patternCtx = patternCanvas.getContext('2d') |
| 1007 | patternCtx.imageSmoothingEnabled = true |
| 1008 | patternCtx.imageSmoothingQuality = 'high' |
| 1009 | if (texture.alpha >= 0 && texture.alpha < 100000) { |
| 1010 | patternCtx.globalAlpha = texture.alpha / 100000 |
| 1011 | } |
| 1012 | let imgInsets = null |
| 1013 | if (texture.insets) { |
| 1014 | let top = texture.insets[0] / 100000 |
| 1015 | let left = texture.insets[1] / 100000 |
| 1016 | let bottom = texture.insets[2] / 100000 |
| 1017 | let right = texture.insets[3] / 100000 |
| 1018 | let x = img.width * left |
| 1019 | let y = img.height * top |
| 1020 | let w = img.width * (1 - left - right) |
| 1021 | let h = img.height * (1 - top - bottom) |
| 1022 | imgInsets = [x, y, w, h] |
| 1023 | } |
| 1024 | if (texture.stretch) { |
| 1025 | let top = texture.stretch[0] / 100000 |
| 1026 | let left = texture.stretch[1] / 100000 |
| 1027 | let bottom = texture.stretch[2] / 100000 |
| 1028 | let right = texture.stretch[3] / 100000 |
| 1029 | let x = width * left |
| 1030 | let y = height * top |
| 1031 | let w = width * (1 - left - right) |
| 1032 | let h = height * (1 - top - bottom) |
| 1033 | if (imgInsets) { |
| 1034 | patternCtx.drawImage(img, imgInsets[0], imgInsets[1], imgInsets[2], imgInsets[3], x, y, w, h) |
| 1035 | } else { |
| 1036 | patternCtx.drawImage(img, x, y, w, h) |
| 1037 | } |
| 1038 | } else if (texture.alignment) { |
| 1039 | let x = 0, y = 0 |
| 1040 | if (texture.alignment == 'CENTER') { |
| 1041 | if (width > anchor[2]) { |
| 1042 | x = (width - anchor[2]) / 2 |
| 1043 | } |
| 1044 | if (height > anchor[3]) { |
| 1045 | y = (height - anchor[3]) / 2 |
| 1046 | } |
| 1047 | } |
| 1048 | patternCtx.drawImage(img, x, y, width, height, 0, 0, width, height) |
| 1049 | } else { |
| 1050 | if (imgInsets) { |
| 1051 | patternCtx.drawImage(img, imgInsets[0], imgInsets[1], imgInsets[2], imgInsets[3], 0, 0, width, height) |
| 1052 | } else { |
| 1053 | patternCtx.drawImage(img, 0, 0, width, height) |
| 1054 | } |
| 1055 | } |
| 1056 | if (texture.duoTone && texture.duoTone.length > 0 && texture.duoTonePrst) { |
| 1057 | try { |
| 1058 | // 重新着色 |
| 1059 | let color = texture.duoTone[0].realColor |
| 1060 | let r = (color >> 16) & 255 |
| 1061 | let g = (color >> 8) & 255 |
| 1062 | let b = (color >> 0) & 255 |
| 1063 | let imageData = patternCtx.getImageData(0, 0, patternCanvas.width, patternCanvas.height) |
| 1064 | let data = imageData.data |
| 1065 | for(var i = 0; i < data.length; i += 4) { |
| 1066 | let gray = (data[i] * 0.3 + data[i + 1] * 0.59 + data[i + 2] * 0.11) / 255 |
| 1067 | // black / white |
| 1068 | let prst = texture.duoTonePrst == 'white' ? 255 : 0 |
| 1069 | data[i] = gray * r + (1 - gray) * prst |
| 1070 | data[i + 1] = gray * g + (1 - gray) * prst |
| 1071 | data[i + 2] = gray * b + (1 - gray) * prst |
| 1072 | } |
| 1073 | patternCtx.putImageData(imageData, 0, 0) |
| 1074 | } catch(e) { /* empty */ } |
| 1075 | } |
| 1076 | return ctx.createPattern(patternCanvas, mode) |
| 1077 | } |
| 1078 | |
| 1079 | function toColor(colorObj, defaultColor) { |
| 1080 | if (colorObj == null || (colorObj.color == null && colorObj.realColor == null)) { |
| 1081 | return defaultColor || 'transparent' |
| 1082 | } |
| 1083 | let color = colorObj.realColor != null ? colorObj.realColor : colorObj.color |
| 1084 | let r = (color >> 16) & 255 |
| 1085 | let g = (color >> 8) & 255 |
| 1086 | let b = (color >> 0) & 255 |
| 1087 | let a = ((color >> 24) & 255) / 255 |
| 1088 | if (colorObj.realColor == null) { |
| 1089 | if (colorObj.alpha != null && colorObj.alpha != -1) { |
| 1090 | if (colorObj.alpha > 1000) { |
| 1091 | a = colorObj.alpha / 100000 |
| 1092 | } else { |
| 1093 | a = (colorObj.alpha > 0 && colorObj.alpha < 1) ? colorObj.alpha : colorObj.alpha / 255 |
| 1094 | } |
| 1095 | a = Math.min(1, Math.max(0, a)) |
| 1096 | } |
| 1097 | if (colorObj.lumMod && colorObj.lumMod > 0) { |
| 1098 | let value = colorObj.lumMod / 100000 |
| 1099 | r = r * value |
| 1100 | g = g * value |
| 1101 | b = b * value |
| 1102 | } |
| 1103 | if (colorObj.lumOff && colorObj.lumOff > 0) { |
| 1104 | let value = colorObj.lumOff / 100000 |
| 1105 | r += 255 * value |
| 1106 | g += 255 * value |
| 1107 | b += 255 * value |
| 1108 | } |
| 1109 | } |
| 1110 | return `rgba(${r}, ${g}, ${b}, ${a})` |
| 1111 | } |
| 1112 | |
| 1113 | function toColorValue(r, g, b, a) { |
| 1114 | a = (a == null ? 255 : a) |
| 1115 | return (a & 255) << 24 | (r & 255) << 16 | (g & 255) << 8 | (b & 255) << 0 |
| 1116 | } |
| 1117 | |
| 1118 | function loadImage(src, anonymous) { |
| 1119 | return new Promise(resolve => { |
| 1120 | if (!src) { |
| 1121 | resolve() |
| 1122 | return |
| 1123 | } |
| 1124 | let cacheKey |
| 1125 | if (src.length < 15) { |
| 1126 | cacheKey = src |
| 1127 | } else { |
| 1128 | cacheKey = src.length + '_' + src.substring(src.length - 15) |
| 1129 | } |
| 1130 | let img = imageCache[cacheKey] |
| 1131 | if (img == null) { |
| 1132 | img = new Image() |
| 1133 | if (imageCrossOrigin || anonymous) { |
| 1134 | let eqOrigin = src.startsWith('data:') || src.startsWith(document.location.origin) || (src.startsWith('//') && (document.location.protocol + src).startsWith(document.location.origin)) |
| 1135 | if (!eqOrigin) { |
| 1136 | // anonymous / use-credentials |
| 1137 | img.crossOrigin = imageCrossOrigin || 'anonymous' |
| 1138 | } |
| 1139 | } |
| 1140 | img.src = src |
| 1141 | img.onload = function() { |
| 1142 | imageCache[cacheKey] = img |
| 1143 | resolve(img) |
| 1144 | } |
| 1145 | img.onerror = function (e) { |
| 1146 | resolve() |
| 1147 | console.log('图片加载失败: ', src, e) |
| 1148 | } |
| 1149 | } else { |
| 1150 | resolve(img) |
| 1151 | } |
| 1152 | }) |
| 1153 | } |
| 1154 | |
| 1155 | function value2px(v, isEmu) { |
| 1156 | if (isEmu) { |
| 1157 | return +v / 12700 |
| 1158 | } else { |
| 1159 | return +v |
| 1160 | } |
| 1161 | } |
| 1162 | |
| 1163 | function value2emu(v) { |
| 1164 | return +v * 12700 |
| 1165 | } |
| 1166 | |
| 1167 | function getTfx(x, div) { |
| 1168 | if (div) { |
| 1169 | return x / (ctx.getTransform().a / ctx.scaleX) |
| 1170 | } else { |
| 1171 | return x * (ctx.getTransform().a / ctx.scaleX) |
| 1172 | } |
| 1173 | } |
| 1174 | |
| 1175 | function getTfy(y, div) { |
| 1176 | if (div) { |
| 1177 | return y / (ctx.getTransform().d / ctx.scaleY) |
| 1178 | } else { |
| 1179 | return y * (ctx.getTransform().d / ctx.scaleY) |
| 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | function splitWords(str) { |
| 1184 | if (!str) { |
| 1185 | return [] |
| 1186 | } |
| 1187 | let pattern = /^[0-9a-zA-Z]+$/ |
| 1188 | let array = [] |
| 1189 | let item = '' |
| 1190 | let math = null |
| 1191 | for (let i = 0; i < str.length; i++) { |
| 1192 | if (str[i] == '\n') { |
| 1193 | if (item) { |
| 1194 | array.push({ text: item, word: math }) |
| 1195 | } |
| 1196 | array.push({ text: '\n', word: false }) |
| 1197 | item = '' |
| 1198 | math = null |
| 1199 | } else { |
| 1200 | let _math = pattern.test(str[i]) |
| 1201 | if (math == null) { |
| 1202 | math = _math |
| 1203 | item += str[i] |
| 1204 | } else if (_math == math) { |
| 1205 | item += str[i] |
| 1206 | } else { |
| 1207 | array.push({ text: item, word: math }) |
| 1208 | item = str[i] |
| 1209 | math = _math |
| 1210 | } |
| 1211 | } |
| 1212 | } |
| 1213 | if (item) { |
| 1214 | array.push({ text: item, word: math }) |
| 1215 | } |
| 1216 | return array |
| 1217 | } |
| 1218 | |
| 1219 | function isSymbol(s) { |
| 1220 | switch (s) { |
| 1221 | case ',': |
| 1222 | case '.': |
| 1223 | case '!': |
| 1224 | case '?': |
| 1225 | case ')': |
| 1226 | case ';': |
| 1227 | case '，': |
| 1228 | case '。': |
| 1229 | case '！': |
| 1230 | case '？': |
| 1231 | case '）': |
| 1232 | case '；': |
| 1233 | case '”': |
| 1234 | case ' ': |
| 1235 | return true |
| 1236 | } |
| 1237 | return false |
| 1238 | } |
| 1239 | |
| 1240 | function rgb2hsv(r, g, b) { |
| 1241 | r /= 255, g /= 255, b /= 255 |
| 1242 | let max = Math.max(r, g, b), min = Math.min(r, g, b) |
| 1243 | let h, s, v = max |
| 1244 | let d = max - min |
| 1245 | s = max == 0 ? 0 : d / max |
| 1246 | if (max == min) { |
| 1247 | h = 0 |
| 1248 | } else { |
| 1249 | switch (max) { |
| 1250 | case r: h = (g - b) / d + (g < b ? 6 : 0); break |
| 1251 | case g: h = (b - r) / d + 2; break |
| 1252 | case b: h = (r - g) / d + 4; break |
| 1253 | } |
| 1254 | h /= 6 |
| 1255 | } |
| 1256 | return [h, s, v] |
| 1257 | } |
| 1258 | |
| 1259 | function hsv2rgb(h, s, v) { |
| 1260 | let r, g, b |
| 1261 | let i = Math.floor(h * 6) |
| 1262 | let f = h * 6 - i |
| 1263 | let p = v * (1 - s) |
| 1264 | let q = v * (1 - f * s) |
| 1265 | let t = v * (1 - (1 - f) * s) |
| 1266 | switch (i % 6) { |
| 1267 | case 0: r = v, g = t, b = p; break |
| 1268 | case 1: r = q, g = v, b = p; break |
| 1269 | case 2: r = p, g = v, b = t; break |
| 1270 | case 3: r = p, g = q, b = v; break |
| 1271 | case 4: r = t, g = p, b = v; break |
| 1272 | case 5: r = v, g = p, b = q; break |
| 1273 | } |
| 1274 | return [r * 255, g * 255, b * 255] |
| 1275 | } |
| 1276 | |
| 1277 | function text(obj) { |
| 1278 | if (obj == null) { |
| 1279 | return null |
| 1280 | } |
| 1281 | let text = obj.text |
| 1282 | if (text != null) { |
| 1283 | return text |
| 1284 | } |
| 1285 | if (obj.children != null && obj.children.length > 0) { |
| 1286 | let textAll = '' |
| 1287 | for (let i = 0; i < obj.children.length; i++) { |
| 1288 | let p = obj.children[i] |
| 1289 | if (p.children == null) { |
| 1290 | continue |
| 1291 | } |
| 1292 | let pText = '' |
| 1293 | for (let j = 0; j < p.children.length; j++) { |
| 1294 | let r = p.children[j] |
| 1295 | if (r.text == null) { |
| 1296 | continue |
| 1297 | } |
| 1298 | pText += r.text |
| 1299 | } |
| 1300 | if (pText) { |
| 1301 | textAll += (pText + '\n') |
| 1302 | } |
| 1303 | } |
| 1304 | if (textAll.length > 0) { |
| 1305 | textAll = textAll.substring(0, textAll.length - 1) |
| 1306 | } |
| 1307 | return textAll |
| 1308 | } |
| 1309 | return '' |
| 1310 | } |
| 1311 | |
| 1312 | this.setTemplateHandle = (_templateHandle) => { |
| 1313 | templateHandle = _templateHandle |
| 1314 | } |
| 1315 | |
| 1316 | this.idMap = idMap |
| 1317 | this.recursion = recursion |
| 1318 | this.drawGeometry = drawGeometry |
| 1319 | this.drawElement = drawElement |
| 1320 | this.toPaint = toPaint |
| 1321 | this.toColor = toColor |
| 1322 | this.toColorValue = toColorValue |
| 1323 | this.loadImage = loadImage |
| 1324 | this.text = text |
| 1325 | |
| 1326 | } |
| 1327 | |
| 1328 | // export { Ppt2Canvas } |