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How to use compileType3Glyph method in wpt

Best JavaScript code snippet using wpt

canvas.js

Source:canvas.js

...165      }166    }167  };168})();169function compileType3Glyph(imgData) {170  var POINT_TO_PROCESS_LIMIT = 1000;171  var width = imgData.width, height = imgData.height;172  var i, j, j0, width1 = width + 1;173  var points = new Uint8Array(width1 * (height + 1));174  var POINT_TYPES =175      new Uint8Array([0, 2, 4, 0, 1, 0, 5, 4, 8, 10, 0, 8, 0, 2, 1, 0]);176  // decodes bit-packed mask data177  var lineSize = (width + 7) & ~7, data0 = imgData.data;178  var data = new Uint8Array(lineSize * height), pos = 0, ii;179  for (i = 0, ii = data0.length; i < ii; i++) {180    var mask = 128, elem = data0[i];181    while (mask > 0) {182      data[pos++] = (elem & mask) ? 0 : 255;183      mask >>= 1;184    }185  }186  // finding iteresting points: every point is located between mask pixels,187  // so there will be points of the (width + 1)x(height + 1) grid. Every point188  // will have flags assigned based on neighboring mask pixels:189  //   4 | 8190  //   --P--191  //   2 | 1192  // We are interested only in points with the flags:193  //   - outside corners: 1, 2, 4, 8;194  //   - inside corners: 7, 11, 13, 14;195  //   - and, intersections: 5, 10.196  var count = 0;197  pos = 0;198  if (data[pos] !== 0) {199    points[0] = 1;200    ++count;201  }202  for (j = 1; j < width; j++) {203    if (data[pos] !== data[pos + 1]) {204      points[j] = data[pos] ? 2 : 1;205      ++count;206    }207    pos++;208  }209  if (data[pos] !== 0) {210    points[j] = 2;211    ++count;212  }213  for (i = 1; i < height; i++) {214    pos = i * lineSize;215    j0 = i * width1;216    if (data[pos - lineSize] !== data[pos]) {217      points[j0] = data[pos] ? 1 : 8;218      ++count;219    }220    // 'sum' is the position of the current pixel configuration in the 'TYPES'221    // array (in order 8-1-2-4, so we can use '>>2' to shift the column).222    var sum = (data[pos] ? 4 : 0) + (data[pos - lineSize] ? 8 : 0);223    for (j = 1; j < width; j++) {224      sum = (sum >> 2) + (data[pos + 1] ? 4 : 0) +225            (data[pos - lineSize + 1] ? 8 : 0);226      if (POINT_TYPES[sum]) {227        points[j0 + j] = POINT_TYPES[sum];228        ++count;229      }230      pos++;231    }232    if (data[pos - lineSize] !== data[pos]) {233      points[j0 + j] = data[pos] ? 2 : 4;234      ++count;235    }236    if (count > POINT_TO_PROCESS_LIMIT) {237      return null;238    }239  }240  pos = lineSize * (height - 1);241  j0 = i * width1;242  if (data[pos] !== 0) {243    points[j0] = 8;244    ++count;245  }246  for (j = 1; j < width; j++) {247    if (data[pos] !== data[pos + 1]) {248      points[j0 + j] = data[pos] ? 4 : 8;249      ++count;250    }251    pos++;252  }253  if (data[pos] !== 0) {254    points[j0 + j] = 4;255    ++count;256  }257  if (count > POINT_TO_PROCESS_LIMIT) {258    return null;259  }260  // building outlines261  var steps = new Int32Array([0, width1, -1, 0, -width1, 0, 0, 0, 1]);262  var outlines = [];263  for (i = 0; count && i <= height; i++) {264    var p = i * width1;265    var end = p + width;266    while (p < end && !points[p]) {267      p++;268    }269    if (p === end) {270      continue;271    }272    var coords = [p % width1, i];273    var type = points[p], p0 = p, pp;274    do {275      var step = steps[type];276      do {277        p += step;278      } while (!points[p]);279      pp = points[p];280      if (pp !== 5 && pp !== 10) {281        // set new direction282        type = pp;283        // delete mark284        points[p] = 0;285      } else { // type is 5 or 10, ie, a crossing286        // set new direction287        type = pp & ((0x33 * type) >> 4);288        // set new type for "future hit"289        points[p] &= (type >> 2 | type << 2);290      }291      coords.push(p % width1);292      coords.push((p / width1) | 0);293      --count;294    } while (p0 !== p);295    outlines.push(coords);296    --i;297  }298  var drawOutline = function(c) {299    c.save();300    // the path shall be painted in [0..1]x[0..1] space301    c.scale(1 / width, -1 / height);302    c.translate(0, -height);303    c.beginPath();304    for (var i = 0, ii = outlines.length; i < ii; i++) {305      var o = outlines[i];306      c.moveTo(o[0], o[1]);307      for (var j = 2, jj = o.length; j < jj; j += 2) {308        c.lineTo(o[j], o[j+1]);309      }310    }311    c.fill();312    c.beginPath();313    c.restore();314  };315  return drawOutline;316}317var CanvasExtraState = (function CanvasExtraStateClosure() {318  function CanvasExtraState(old) {319    // Are soft masks and alpha values shapes or opacities?320    this.alphaIsShape = false;321    this.fontSize = 0;322    this.fontSizeScale = 1;323    this.textMatrix = IDENTITY_MATRIX;324    this.textMatrixScale = 1;325    this.fontMatrix = FONT_IDENTITY_MATRIX;326    this.leading = 0;327    // Current point (in user coordinates)328    this.x = 0;329    this.y = 0;330    // Start of text line (in text coordinates)331    this.lineX = 0;332    this.lineY = 0;333    // Character and word spacing334    this.charSpacing = 0;335    this.wordSpacing = 0;336    this.textHScale = 1;337    this.textRenderingMode = TextRenderingMode.FILL;338    this.textRise = 0;339    // Default fore and background colors340    this.fillColor = '#000000';341    this.strokeColor = '#000000';342    this.patternFill = false;343    // Note: fill alpha applies to all non-stroking operations344    this.fillAlpha = 1;345    this.strokeAlpha = 1;346    this.lineWidth = 1;347    this.activeSMask = null; // nonclonable field (see the save method below)348    this.old = old;349  }350  CanvasExtraState.prototype = {351    clone: function CanvasExtraState_clone() {352      return Object.create(this);353    },354    setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) {355      this.x = x;356      this.y = y;357    }358  };359  return CanvasExtraState;360})();361var CanvasGraphics = (function CanvasGraphicsClosure() {362  // Defines the time the executeOperatorList is going to be executing363  // before it stops and shedules a continue of execution.364  var EXECUTION_TIME = 15;365  // Defines the number of steps before checking the execution time366  var EXECUTION_STEPS = 10;367  function CanvasGraphics(canvasCtx, commonObjs, objs, imageLayer) {368    this.ctx = canvasCtx;369    this.current = new CanvasExtraState();370    this.stateStack = [];371    this.pendingClip = null;372    this.pendingEOFill = false;373    this.res = null;374    this.xobjs = null;375    this.commonObjs = commonObjs;376    this.objs = objs;377    this.imageLayer = imageLayer;378    this.groupStack = [];379    this.processingType3 = null;380    // Patterns are painted relative to the initial page/form transform, see pdf381    // spec 8.7.2 NOTE 1.382    this.baseTransform = null;383    this.baseTransformStack = [];384    this.groupLevel = 0;385    this.smaskStack = [];386    this.smaskCounter = 0;387    this.tempSMask = null;388    if (canvasCtx) {389      // NOTE: if mozCurrentTransform is polyfilled, then the current state of390      // the transformation must already be set in canvasCtx._transformMatrix.391      addContextCurrentTransform(canvasCtx);392    }393    this.cachedGetSinglePixelWidth = null;394  }395  function putBinaryImageData(ctx, imgData) {396    if (typeof ImageData !== 'undefined' && imgData instanceof ImageData) {397      ctx.putImageData(imgData, 0, 0);398      return;399    }400    // Put the image data to the canvas in chunks, rather than putting the401    // whole image at once.  This saves JS memory, because the ImageData object402    // is smaller. It also possibly saves C++ memory within the implementation403    // of putImageData(). (E.g. in Firefox we make two short-lived copies of404    // the data passed to putImageData()). |n| shouldn't be too small, however,405    // because too many putImageData() calls will slow things down.406    //407    // Note: as written, if the last chunk is partial, the putImageData() call408    // will (conceptually) put pixels past the bounds of the canvas.  But409    // that's ok; any such pixels are ignored.410    var height = imgData.height, width = imgData.width;411    var partialChunkHeight = height % FULL_CHUNK_HEIGHT;412    var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;413    var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;414    var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);415    var srcPos = 0, destPos;416    var src = imgData.data;417    var dest = chunkImgData.data;418    var i, j, thisChunkHeight, elemsInThisChunk;419    // There are multiple forms in which the pixel data can be passed, and420    // imgData.kind tells us which one this is.421    if (imgData.kind === ImageKind.GRAYSCALE_1BPP) {422      // Grayscale, 1 bit per pixel (i.e. black-and-white).423      var srcLength = src.byteLength;424      var dest32 = PDFJS.hasCanvasTypedArrays ? new Uint32Array(dest.buffer) :425        new Uint32ArrayView(dest);426      var dest32DataLength = dest32.length;427      var fullSrcDiff = (width + 7) >> 3;428      var white = 0xFFFFFFFF;429      var black = (PDFJS.isLittleEndian || !PDFJS.hasCanvasTypedArrays) ?430        0xFF000000 : 0x000000FF;431      for (i = 0; i < totalChunks; i++) {432        thisChunkHeight =433          (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight;434        destPos = 0;435        for (j = 0; j < thisChunkHeight; j++) {436          var srcDiff = srcLength - srcPos;437          var k = 0;438          var kEnd = (srcDiff > fullSrcDiff) ? width : srcDiff * 8 - 7;439          var kEndUnrolled = kEnd & ~7;440          var mask = 0;441          var srcByte = 0;442          for (; k < kEndUnrolled; k += 8) {443            srcByte = src[srcPos++];444            dest32[destPos++] = (srcByte & 128) ? white : black;445            dest32[destPos++] = (srcByte & 64) ? white : black;446            dest32[destPos++] = (srcByte & 32) ? white : black;447            dest32[destPos++] = (srcByte & 16) ? white : black;448            dest32[destPos++] = (srcByte & 8) ? white : black;449            dest32[destPos++] = (srcByte & 4) ? white : black;450            dest32[destPos++] = (srcByte & 2) ? white : black;451            dest32[destPos++] = (srcByte & 1) ? white : black;452          }453          for (; k < kEnd; k++) {454             if (mask === 0) {455               srcByte = src[srcPos++];456               mask = 128;457             }458            dest32[destPos++] = (srcByte & mask) ? white : black;459            mask >>= 1;460          }461        }462        // We ran out of input. Make all remaining pixels transparent.463        while (destPos < dest32DataLength) {464          dest32[destPos++] = 0;465        }466        ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);467      }468    } else if (imgData.kind === ImageKind.RGBA_32BPP) {469      // RGBA, 32-bits per pixel.470      j = 0;471      elemsInThisChunk = width * FULL_CHUNK_HEIGHT * 4;472      for (i = 0; i < fullChunks; i++) {473        dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));474        srcPos += elemsInThisChunk;475        ctx.putImageData(chunkImgData, 0, j);476        j += FULL_CHUNK_HEIGHT;477      }478      if (i < totalChunks) {479        elemsInThisChunk = width * partialChunkHeight * 4;480        dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));481        ctx.putImageData(chunkImgData, 0, j);482      }483    } else if (imgData.kind === ImageKind.RGB_24BPP) {484      // RGB, 24-bits per pixel.485      thisChunkHeight = FULL_CHUNK_HEIGHT;486      elemsInThisChunk = width * thisChunkHeight;487      for (i = 0; i < totalChunks; i++) {488        if (i >= fullChunks) {489          thisChunkHeight = partialChunkHeight;490          elemsInThisChunk = width * thisChunkHeight;491        }492        destPos = 0;493        for (j = elemsInThisChunk; j--;) {494          dest[destPos++] = src[srcPos++];495          dest[destPos++] = src[srcPos++];496          dest[destPos++] = src[srcPos++];497          dest[destPos++] = 255;498        }499        ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);500      }501    } else {502      error('bad image kind: ' + imgData.kind);503    }504  }505  function putBinaryImageMask(ctx, imgData) {506    var height = imgData.height, width = imgData.width;507    var partialChunkHeight = height % FULL_CHUNK_HEIGHT;508    var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;509    var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;510    var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);511    var srcPos = 0;512    var src = imgData.data;513    var dest = chunkImgData.data;514    for (var i = 0; i < totalChunks; i++) {515      var thisChunkHeight =516        (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight;517      // Expand the mask so it can be used by the canvas.  Any required518      // inversion has already been handled.519      var destPos = 3; // alpha component offset520      for (var j = 0; j < thisChunkHeight; j++) {521        var mask = 0;522        for (var k = 0; k < width; k++) {523          if (!mask) {524            var elem = src[srcPos++];525            mask = 128;526          }527          dest[destPos] = (elem & mask) ? 0 : 255;528          destPos += 4;529          mask >>= 1;530        }531      }532      ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);533    }534  }535  function copyCtxState(sourceCtx, destCtx) {536    var properties = ['strokeStyle', 'fillStyle', 'fillRule', 'globalAlpha',537                      'lineWidth', 'lineCap', 'lineJoin', 'miterLimit',538                      'globalCompositeOperation', 'font'];539    for (var i = 0, ii = properties.length; i < ii; i++) {540      var property = properties[i];541      if (sourceCtx[property] !== undefined) {542        destCtx[property] = sourceCtx[property];543      }544    }545    if (sourceCtx.setLineDash !== undefined) {546      destCtx.setLineDash(sourceCtx.getLineDash());547      destCtx.lineDashOffset =  sourceCtx.lineDashOffset;548    } else if (sourceCtx.mozDashOffset !== undefined) {549      destCtx.mozDash = sourceCtx.mozDash;550      destCtx.mozDashOffset = sourceCtx.mozDashOffset;551    }552  }553  function composeSMaskBackdrop(bytes, r0, g0, b0) {554    var length = bytes.length;555    for (var i = 3; i < length; i += 4) {556      var alpha = bytes[i];557      if (alpha === 0) {558        bytes[i - 3] = r0;559        bytes[i - 2] = g0;560        bytes[i - 1] = b0;561      } else if (alpha < 255) {562        var alpha_ = 255 - alpha;563        bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) >> 8;564        bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) >> 8;565        bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) >> 8;566      }567    }568  }569  function composeSMaskAlpha(maskData, layerData) {570    var length = maskData.length;571    var scale = 1 / 255;572    for (var i = 3; i < length; i += 4) {573      var alpha = maskData[i];574      layerData[i] = (layerData[i] * alpha * scale) | 0;575    }576  }577  function composeSMaskLuminosity(maskData, layerData) {578    var length = maskData.length;579    for (var i = 3; i < length; i += 4) {580      var y = (maskData[i - 3] * 77) +  // * 0.3 / 255 * 0x10000581              (maskData[i - 2] * 152) + // * 0.59 ....582              (maskData[i - 1] * 28);   // * 0.11 ....583      layerData[i] = (layerData[i] * y) >> 16;584    }585  }586  function genericComposeSMask(maskCtx, layerCtx, width, height,587                               subtype, backdrop) {588    var hasBackdrop = !!backdrop;589    var r0 = hasBackdrop ? backdrop[0] : 0;590    var g0 = hasBackdrop ? backdrop[1] : 0;591    var b0 = hasBackdrop ? backdrop[2] : 0;592    var composeFn;593    if (subtype === 'Luminosity') {594      composeFn = composeSMaskLuminosity;595    } else {596      composeFn = composeSMaskAlpha;597    }598    // processing image in chunks to save memory599    var PIXELS_TO_PROCESS = 1048576;600    var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width));601    for (var row = 0; row < height; row += chunkSize) {602      var chunkHeight = Math.min(chunkSize, height - row);603      var maskData = maskCtx.getImageData(0, row, width, chunkHeight);604      var layerData = layerCtx.getImageData(0, row, width, chunkHeight);605      if (hasBackdrop) {606        composeSMaskBackdrop(maskData.data, r0, g0, b0);607      }608      composeFn(maskData.data, layerData.data);609      maskCtx.putImageData(layerData, 0, row);610    }611  }612  function composeSMask(ctx, smask, layerCtx) {613    var mask = smask.canvas;614    var maskCtx = smask.context;615    ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY,616                     smask.offsetX, smask.offsetY);617    var backdrop = smask.backdrop || null;618    if (WebGLUtils.isEnabled) {619      var composed = WebGLUtils.composeSMask(layerCtx.canvas, mask,620        {subtype: smask.subtype, backdrop: backdrop});621      ctx.setTransform(1, 0, 0, 1, 0, 0);622      ctx.drawImage(composed, smask.offsetX, smask.offsetY);623      return;624    }625    genericComposeSMask(maskCtx, layerCtx, mask.width, mask.height,626                        smask.subtype, backdrop);627    ctx.drawImage(mask, 0, 0);628  }629  var LINE_CAP_STYLES = ['butt', 'round', 'square'];630  var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];631  var NORMAL_CLIP = {};632  var EO_CLIP = {};633  CanvasGraphics.prototype = {634    beginDrawing: function CanvasGraphics_beginDrawing(viewport, transparency) {635      // For pdfs that use blend modes we have to clear the canvas else certain636      // blend modes can look wrong since we'd be blending with a white637      // backdrop. The problem with a transparent backdrop though is we then638      // don't get sub pixel anti aliasing on text, so we fill with white if639      // we can.640      var width = this.ctx.canvas.width;641      var height = this.ctx.canvas.height;642      if (transparency) {643        this.ctx.clearRect(0, 0, width, height);644      } else {645        this.ctx.mozOpaque = true;646        this.ctx.save();647        this.ctx.fillStyle = 'rgb(255, 255, 255)';648        this.ctx.fillRect(0, 0, width, height);649        this.ctx.restore();650      }651      var transform = viewport.transform;652      this.ctx.save();653      this.ctx.transform.apply(this.ctx, transform);654      this.baseTransform = this.ctx.mozCurrentTransform.slice();655      if (this.imageLayer) {656        this.imageLayer.beginLayout();657      }658    },659    executeOperatorList: function CanvasGraphics_executeOperatorList(660                                    operatorList,661                                    executionStartIdx, continueCallback,662                                    stepper) {663      var argsArray = operatorList.argsArray;664      var fnArray = operatorList.fnArray;665      var i = executionStartIdx || 0;666      var argsArrayLen = argsArray.length;667      // Sometimes the OperatorList to execute is empty.668      if (argsArrayLen === i) {669        return i;670      }671      var chunkOperations = (argsArrayLen - i > EXECUTION_STEPS &&672                             typeof continueCallback === 'function');673      var endTime = chunkOperations ? Date.now() + EXECUTION_TIME : 0;674      var steps = 0;675      var commonObjs = this.commonObjs;676      var objs = this.objs;677      var fnId;678      while (true) {679        if (stepper !== undefined && i === stepper.nextBreakPoint) {680          stepper.breakIt(i, continueCallback);681          return i;682        }683        fnId = fnArray[i];684        if (fnId !== OPS.dependency) {685          this[fnId].apply(this, argsArray[i]);686        } else {687          var deps = argsArray[i];688          for (var n = 0, nn = deps.length; n < nn; n++) {689            var depObjId = deps[n];690            var common = depObjId[0] === 'g' && depObjId[1] === '_';691            var objsPool = common ? commonObjs : objs;692            // If the promise isn't resolved yet, add the continueCallback693            // to the promise and bail out.694            if (!objsPool.isResolved(depObjId)) {695              objsPool.get(depObjId, continueCallback);696              return i;697            }698          }699        }700        i++;701        // If the entire operatorList was executed, stop as were done.702        if (i === argsArrayLen) {703          return i;704        }705        // If the execution took longer then a certain amount of time and706        // `continueCallback` is specified, interrupt the execution.707        if (chunkOperations && ++steps > EXECUTION_STEPS) {708          if (Date.now() > endTime) {709            continueCallback();710            return i;711          }712          steps = 0;713        }714        // If the operatorList isn't executed completely yet OR the execution715        // time was short enough, do another execution round.716      }717    },718    endDrawing: function CanvasGraphics_endDrawing() {719      this.ctx.restore();720      CachedCanvases.clear();721      WebGLUtils.clear();722      if (this.imageLayer) {723        this.imageLayer.endLayout();724      }725    },726    // Graphics state727    setLineWidth: function CanvasGraphics_setLineWidth(width) {728      this.current.lineWidth = width;729      this.ctx.lineWidth = width;730    },731    setLineCap: function CanvasGraphics_setLineCap(style) {732      this.ctx.lineCap = LINE_CAP_STYLES[style];733    },734    setLineJoin: function CanvasGraphics_setLineJoin(style) {735      this.ctx.lineJoin = LINE_JOIN_STYLES[style];736    },737    setMiterLimit: function CanvasGraphics_setMiterLimit(limit) {738      this.ctx.miterLimit = limit;739    },740    setDash: function CanvasGraphics_setDash(dashArray, dashPhase) {741      var ctx = this.ctx;742      if (ctx.setLineDash !== undefined) {743        ctx.setLineDash(dashArray);744        ctx.lineDashOffset = dashPhase;745      } else {746        ctx.mozDash = dashArray;747        ctx.mozDashOffset = dashPhase;748      }749    },750    setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) {751      // Maybe if we one day fully support color spaces this will be important752      // for now we can ignore.753      // TODO set rendering intent?754    },755    setFlatness: function CanvasGraphics_setFlatness(flatness) {756      // There's no way to control this with canvas, but we can safely ignore.757      // TODO set flatness?758    },759    setGState: function CanvasGraphics_setGState(states) {760      for (var i = 0, ii = states.length; i < ii; i++) {761        var state = states[i];762        var key = state[0];763        var value = state[1];764        switch (key) {765          case 'LW':766            this.setLineWidth(value);767            break;768          case 'LC':769            this.setLineCap(value);770            break;771          case 'LJ':772            this.setLineJoin(value);773            break;774          case 'ML':775            this.setMiterLimit(value);776            break;777          case 'D':778            this.setDash(value[0], value[1]);779            break;780          case 'RI':781            this.setRenderingIntent(value);782            break;783          case 'FL':784            this.setFlatness(value);785            break;786          case 'Font':787            this.setFont(value[0], value[1]);788            break;789          case 'CA':790            this.current.strokeAlpha = state[1];791            break;792          case 'ca':793            this.current.fillAlpha = state[1];794            this.ctx.globalAlpha = state[1];795            break;796          case 'BM':797            if (value && value.name && (value.name !== 'Normal')) {798              var mode = value.name.replace(/([A-Z])/g,799                function(c) {800                  return '-' + c.toLowerCase();801                }802              ).substring(1);803              this.ctx.globalCompositeOperation = mode;804              if (this.ctx.globalCompositeOperation !== mode) {805                warn('globalCompositeOperation "' + mode +806                     '" is not supported');807              }808            } else {809              this.ctx.globalCompositeOperation = 'source-over';810            }811            break;812          case 'SMask':813            if (this.current.activeSMask) {814              this.endSMaskGroup();815            }816            this.current.activeSMask = value ? this.tempSMask : null;817            if (this.current.activeSMask) {818              this.beginSMaskGroup();819            }820            this.tempSMask = null;821            break;822        }823      }824    },825    beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() {826      var activeSMask = this.current.activeSMask;827      var drawnWidth = activeSMask.canvas.width;828      var drawnHeight = activeSMask.canvas.height;829      var cacheId = 'smaskGroupAt' + this.groupLevel;830      var scratchCanvas = CachedCanvases.getCanvas(831        cacheId, drawnWidth, drawnHeight, true);832      var currentCtx = this.ctx;833      var currentTransform = currentCtx.mozCurrentTransform;834      this.ctx.save();835      var groupCtx = scratchCanvas.context;836      groupCtx.scale(1 / activeSMask.scaleX, 1 / activeSMask.scaleY);837      groupCtx.translate(-activeSMask.offsetX, -activeSMask.offsetY);838      groupCtx.transform.apply(groupCtx, currentTransform);839      copyCtxState(currentCtx, groupCtx);840      this.ctx = groupCtx;841      this.setGState([842        ['BM', 'Normal'],843        ['ca', 1],844        ['CA', 1]845      ]);846      this.groupStack.push(currentCtx);847      this.groupLevel++;848    },849    endSMaskGroup: function CanvasGraphics_endSMaskGroup() {850      var groupCtx = this.ctx;851      this.groupLevel--;852      this.ctx = this.groupStack.pop();853      composeSMask(this.ctx, this.current.activeSMask, groupCtx);854      this.ctx.restore();855    },856    save: function CanvasGraphics_save() {857      this.ctx.save();858      var old = this.current;859      this.stateStack.push(old);860      this.current = old.clone();861      this.current.activeSMask = null;862    },863    restore: function CanvasGraphics_restore() {864      if (this.stateStack.length !== 0) {865        if (this.current.activeSMask !== null) {866          this.endSMaskGroup();867        }868        this.current = this.stateStack.pop();869        this.ctx.restore();870        this.cachedGetSinglePixelWidth = null;871      }872    },873    transform: function CanvasGraphics_transform(a, b, c, d, e, f) {874      this.ctx.transform(a, b, c, d, e, f);875      this.cachedGetSinglePixelWidth = null;876    },877    // Path878    constructPath: function CanvasGraphics_constructPath(ops, args) {879      var ctx = this.ctx;880      var current = this.current;881      var x = current.x, y = current.y;882      for (var i = 0, j = 0, ii = ops.length; i < ii; i++) {883        switch (ops[i] | 0) {884          case OPS.rectangle:885            x = args[j++];886            y = args[j++];887            var width = args[j++];888            var height = args[j++];889            if (width === 0) {890              width = this.getSinglePixelWidth();891            }892            if (height === 0) {893              height = this.getSinglePixelWidth();894            }895            var xw = x + width;896            var yh = y + height;897            this.ctx.moveTo(x, y);898            this.ctx.lineTo(xw, y);899            this.ctx.lineTo(xw, yh);900            this.ctx.lineTo(x, yh);901            this.ctx.lineTo(x, y);902            this.ctx.closePath();903            break;904          case OPS.moveTo:905            x = args[j++];906            y = args[j++];907            ctx.moveTo(x, y);908            break;909          case OPS.lineTo:910            x = args[j++];911            y = args[j++];912            ctx.lineTo(x, y);913            break;914          case OPS.curveTo:915            x = args[j + 4];916            y = args[j + 5];917            ctx.bezierCurveTo(args[j], args[j + 1], args[j + 2], args[j + 3],918                              x, y);919            j += 6;920            break;921          case OPS.curveTo2:922            ctx.bezierCurveTo(x, y, args[j], args[j + 1],923                              args[j + 2], args[j + 3]);924            x = args[j + 2];925            y = args[j + 3];926            j += 4;927            break;928          case OPS.curveTo3:929            x = args[j + 2];930            y = args[j + 3];931            ctx.bezierCurveTo(args[j], args[j + 1], x, y, x, y);932            j += 4;933            break;934          case OPS.closePath:935            ctx.closePath();936            break;937        }938      }939      current.setCurrentPoint(x, y);940    },941    closePath: function CanvasGraphics_closePath() {942      this.ctx.closePath();943    },944    stroke: function CanvasGraphics_stroke(consumePath) {945      consumePath = typeof consumePath !== 'undefined' ? consumePath : true;946      var ctx = this.ctx;947      var strokeColor = this.current.strokeColor;948      // Prevent drawing too thin lines by enforcing a minimum line width.949      ctx.lineWidth = Math.max(this.getSinglePixelWidth() * MIN_WIDTH_FACTOR,950                               this.current.lineWidth);951      // For stroke we want to temporarily change the global alpha to the952      // stroking alpha.953      ctx.globalAlpha = this.current.strokeAlpha;954      if (strokeColor && strokeColor.hasOwnProperty('type') &&955          strokeColor.type === 'Pattern') {956        // for patterns, we transform to pattern space, calculate957        // the pattern, call stroke, and restore to user space958        ctx.save();959        ctx.strokeStyle = strokeColor.getPattern(ctx, this);960        ctx.stroke();961        ctx.restore();962      } else {963        ctx.stroke();964      }965      if (consumePath) {966        this.consumePath();967      }968      // Restore the global alpha to the fill alpha969      ctx.globalAlpha = this.current.fillAlpha;970    },971    closeStroke: function CanvasGraphics_closeStroke() {972      this.closePath();973      this.stroke();974    },975    fill: function CanvasGraphics_fill(consumePath) {976      consumePath = typeof consumePath !== 'undefined' ? consumePath : true;977      var ctx = this.ctx;978      var fillColor = this.current.fillColor;979      var isPatternFill = this.current.patternFill;980      var needRestore = false;981      if (isPatternFill) {982        ctx.save();983        ctx.fillStyle = fillColor.getPattern(ctx, this);984        needRestore = true;985      }986      if (this.pendingEOFill) {987        if (ctx.mozFillRule !== undefined) {988          ctx.mozFillRule = 'evenodd';989          ctx.fill();990          ctx.mozFillRule = 'nonzero';991        } else {992          try {993            ctx.fill('evenodd');994          } catch (ex) {995            // shouldn't really happen, but browsers might think differently996            ctx.fill();997          }998        }999        this.pendingEOFill = false;1000      } else {1001        ctx.fill();1002      }1003      if (needRestore) {1004        ctx.restore();1005      }1006      if (consumePath) {1007        this.consumePath();1008      }1009    },1010    eoFill: function CanvasGraphics_eoFill() {1011      this.pendingEOFill = true;1012      this.fill();1013    },1014    fillStroke: function CanvasGraphics_fillStroke() {1015      this.fill(false);1016      this.stroke(false);1017      this.consumePath();1018    },1019    eoFillStroke: function CanvasGraphics_eoFillStroke() {1020      this.pendingEOFill = true;1021      this.fillStroke();1022    },1023    closeFillStroke: function CanvasGraphics_closeFillStroke() {1024      this.closePath();1025      this.fillStroke();1026    },1027    closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() {1028      this.pendingEOFill = true;1029      this.closePath();1030      this.fillStroke();1031    },1032    endPath: function CanvasGraphics_endPath() {1033      this.consumePath();1034    },1035    // Clipping1036    clip: function CanvasGraphics_clip() {1037      this.pendingClip = NORMAL_CLIP;1038    },1039    eoClip: function CanvasGraphics_eoClip() {1040      this.pendingClip = EO_CLIP;1041    },1042    // Text1043    beginText: function CanvasGraphics_beginText() {1044      this.current.textMatrix = IDENTITY_MATRIX;1045      this.current.textMatrixScale = 1;1046      this.current.x = this.current.lineX = 0;1047      this.current.y = this.current.lineY = 0;1048    },1049    endText: function CanvasGraphics_endText() {1050      var paths = this.pendingTextPaths;1051      var ctx = this.ctx;1052      if (paths === undefined) {1053        ctx.beginPath();1054        return;1055      }1056      ctx.save();1057      ctx.beginPath();1058      for (var i = 0; i < paths.length; i++) {1059        var path = paths[i];1060        ctx.setTransform.apply(ctx, path.transform);1061        ctx.translate(path.x, path.y);1062        path.addToPath(ctx, path.fontSize);1063      }1064      ctx.restore();1065      ctx.clip();1066      ctx.beginPath();1067      delete this.pendingTextPaths;1068    },1069    setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) {1070      this.current.charSpacing = spacing;1071    },1072    setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) {1073      this.current.wordSpacing = spacing;1074    },1075    setHScale: function CanvasGraphics_setHScale(scale) {1076      this.current.textHScale = scale / 100;1077    },1078    setLeading: function CanvasGraphics_setLeading(leading) {1079      this.current.leading = -leading;1080    },1081    setFont: function CanvasGraphics_setFont(fontRefName, size) {1082      var fontObj = this.commonObjs.get(fontRefName);1083      var current = this.current;1084      if (!fontObj) {1085        error('Can\'t find font for ' + fontRefName);1086      }1087      current.fontMatrix = (fontObj.fontMatrix ?1088                            fontObj.fontMatrix : FONT_IDENTITY_MATRIX);1089      // A valid matrix needs all main diagonal elements to be non-zero1090      // This also ensures we bypass FF bugzilla bug #719844.1091      if (current.fontMatrix[0] === 0 ||1092          current.fontMatrix[3] === 0) {1093        warn('Invalid font matrix for font ' + fontRefName);1094      }1095      // The spec for Tf (setFont) says that 'size' specifies the font 'scale',1096      // and in some docs this can be negative (inverted x-y axes).1097      if (size < 0) {1098        size = -size;1099        current.fontDirection = -1;1100      } else {1101        current.fontDirection = 1;1102      }1103      this.current.font = fontObj;1104      this.current.fontSize = size;1105      if (fontObj.isType3Font) {1106        return; // we don't need ctx.font for Type3 fonts1107      }1108      var name = fontObj.loadedName || 'sans-serif';1109      var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') :1110                                 (fontObj.bold ? 'bold' : 'normal');1111      var italic = fontObj.italic ? 'italic' : 'normal';1112      var typeface = '"' + name + '", ' + fontObj.fallbackName;1113      // Some font backends cannot handle fonts below certain size.1114      // Keeping the font at minimal size and using the fontSizeScale to change1115      // the current transformation matrix before the fillText/strokeText.1116      // See https://bugzilla.mozilla.org/show_bug.cgi?id=7262271117      var browserFontSize = size < MIN_FONT_SIZE ? MIN_FONT_SIZE :1118                            size > MAX_FONT_SIZE ? MAX_FONT_SIZE : size;1119      this.current.fontSizeScale = size / browserFontSize;1120      var rule = italic + ' ' + bold + ' ' + browserFontSize + 'px ' + typeface;1121      this.ctx.font = rule;1122    },1123    setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) {1124      this.current.textRenderingMode = mode;1125    },1126    setTextRise: function CanvasGraphics_setTextRise(rise) {1127      this.current.textRise = rise;1128    },1129    moveText: function CanvasGraphics_moveText(x, y) {1130      this.current.x = this.current.lineX += x;1131      this.current.y = this.current.lineY += y;1132    },1133    setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) {1134      this.setLeading(-y);1135      this.moveText(x, y);1136    },1137    setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) {1138      this.current.textMatrix = [a, b, c, d, e, f];1139      this.current.textMatrixScale = Math.sqrt(a * a + b * b);1140      this.current.x = this.current.lineX = 0;1141      this.current.y = this.current.lineY = 0;1142    },1143    nextLine: function CanvasGraphics_nextLine() {1144      this.moveText(0, this.current.leading);1145    },1146    paintChar: function CanvasGraphics_paintChar(character, x, y) {1147      var ctx = this.ctx;1148      var current = this.current;1149      var font = current.font;1150      var textRenderingMode = current.textRenderingMode;1151      var fontSize = current.fontSize / current.fontSizeScale;1152      var fillStrokeMode = textRenderingMode &1153        TextRenderingMode.FILL_STROKE_MASK;1154      var isAddToPathSet = !!(textRenderingMode &1155        TextRenderingMode.ADD_TO_PATH_FLAG);1156      var addToPath;1157      if (font.disableFontFace || isAddToPathSet) {1158        addToPath = font.getPathGenerator(this.commonObjs, character);1159      }1160      if (font.disableFontFace) {1161        ctx.save();1162        ctx.translate(x, y);1163        ctx.beginPath();1164        addToPath(ctx, fontSize);1165        if (fillStrokeMode === TextRenderingMode.FILL ||1166            fillStrokeMode === TextRenderingMode.FILL_STROKE) {1167          ctx.fill();1168        }1169        if (fillStrokeMode === TextRenderingMode.STROKE ||1170            fillStrokeMode === TextRenderingMode.FILL_STROKE) {1171          ctx.stroke();1172        }1173        ctx.restore();1174      } else {1175        if (fillStrokeMode === TextRenderingMode.FILL ||1176            fillStrokeMode === TextRenderingMode.FILL_STROKE) {1177          ctx.fillText(character, x, y);1178        }1179        if (fillStrokeMode === TextRenderingMode.STROKE ||1180            fillStrokeMode === TextRenderingMode.FILL_STROKE) {1181          ctx.strokeText(character, x, y);1182        }1183      }1184      if (isAddToPathSet) {1185        var paths = this.pendingTextPaths || (this.pendingTextPaths = []);1186        paths.push({1187          transform: ctx.mozCurrentTransform,1188          x: x,1189          y: y,1190          fontSize: fontSize,1191          addToPath: addToPath1192        });1193      }1194    },1195    get isFontSubpixelAAEnabled() {1196      // Checks if anti-aliasing is enabled when scaled text is painted.1197      // On Windows GDI scaled fonts looks bad.1198      var ctx = document.createElement('canvas').getContext('2d');1199      ctx.scale(1.5, 1);1200      ctx.fillText('I', 0, 10);1201      var data = ctx.getImageData(0, 0, 10, 10).data;1202      var enabled = false;1203      for (var i = 3; i < data.length; i += 4) {1204        if (data[i] > 0 && data[i] < 255) {1205          enabled = true;1206          break;1207        }1208      }1209      return shadow(this, 'isFontSubpixelAAEnabled', enabled);1210    },1211    showText: function CanvasGraphics_showText(glyphs) {1212      var current = this.current;1213      var font = current.font;1214      if (font.isType3Font) {1215        return this.showType3Text(glyphs);1216      }1217      var fontSize = current.fontSize;1218      if (fontSize === 0) {1219        return;1220      }1221      var ctx = this.ctx;1222      var fontSizeScale = current.fontSizeScale;1223      var charSpacing = current.charSpacing;1224      var wordSpacing = current.wordSpacing;1225      var fontDirection = current.fontDirection;1226      var textHScale = current.textHScale * fontDirection;1227      var glyphsLength = glyphs.length;1228      var vertical = font.vertical;1229      var defaultVMetrics = font.defaultVMetrics;1230      var widthAdvanceScale = fontSize * current.fontMatrix[0];1231      var simpleFillText =1232        current.textRenderingMode === TextRenderingMode.FILL &&1233        !font.disableFontFace;1234      ctx.save();1235      ctx.transform.apply(ctx, current.textMatrix);1236      ctx.translate(current.x, current.y + current.textRise);1237      if (fontDirection > 0) {1238        ctx.scale(textHScale, -1);1239      } else {1240        ctx.scale(textHScale, 1);1241      }1242      var lineWidth = current.lineWidth;1243      var scale = current.textMatrixScale;1244      if (scale === 0 || lineWidth === 0) {1245        var fillStrokeMode = current.textRenderingMode &1246          TextRenderingMode.FILL_STROKE_MASK;1247        if (fillStrokeMode === TextRenderingMode.STROKE ||1248            fillStrokeMode === TextRenderingMode.FILL_STROKE) {1249          this.cachedGetSinglePixelWidth = null;1250          lineWidth = this.getSinglePixelWidth() * MIN_WIDTH_FACTOR;1251        }1252      } else {1253        lineWidth /= scale;1254      }1255      if (fontSizeScale !== 1.0) {1256        ctx.scale(fontSizeScale, fontSizeScale);1257        lineWidth /= fontSizeScale;1258      }1259      ctx.lineWidth = lineWidth;1260      var x = 0, i;1261      for (i = 0; i < glyphsLength; ++i) {1262        var glyph = glyphs[i];1263        if (glyph === null) {1264          // word break1265          x += fontDirection * wordSpacing;1266          continue;1267        } else if (isNum(glyph)) {1268          x += -glyph * fontSize * 0.001;1269          continue;1270        }1271        var restoreNeeded = false;1272        var character = glyph.fontChar;1273        var accent = glyph.accent;1274        var scaledX, scaledY, scaledAccentX, scaledAccentY;1275        var width = glyph.width;1276        if (vertical) {1277          var vmetric, vx, vy;1278          vmetric = glyph.vmetric || defaultVMetrics;1279          vx = glyph.vmetric ? vmetric[1] : width * 0.5;1280          vx = -vx * widthAdvanceScale;1281          vy = vmetric[2] * widthAdvanceScale;1282          width = vmetric ? -vmetric[0] : width;1283          scaledX = vx / fontSizeScale;1284          scaledY = (x + vy) / fontSizeScale;1285        } else {1286          scaledX = x / fontSizeScale;1287          scaledY = 0;1288        }1289        if (font.remeasure && width > 0 && this.isFontSubpixelAAEnabled) {1290          // some standard fonts may not have the exact width, trying to1291          // rescale per character1292          var measuredWidth = ctx.measureText(character).width * 1000 /1293            fontSize * fontSizeScale;1294          var characterScaleX = width / measuredWidth;1295          restoreNeeded = true;1296          ctx.save();1297          ctx.scale(characterScaleX, 1);1298          scaledX /= characterScaleX;1299        }1300        if (simpleFillText && !accent) {1301          // common case1302          ctx.fillText(character, scaledX, scaledY);1303        } else {1304          this.paintChar(character, scaledX, scaledY);1305          if (accent) {1306            scaledAccentX = scaledX + accent.offset.x / fontSizeScale;1307            scaledAccentY = scaledY - accent.offset.y / fontSizeScale;1308            this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY);1309          }1310        }1311        var charWidth = width * widthAdvanceScale + charSpacing * fontDirection;1312        x += charWidth;1313        if (restoreNeeded) {1314          ctx.restore();1315        }1316      }1317      if (vertical) {1318        current.y -= x * textHScale;1319      } else {1320        current.x += x * textHScale;1321      }1322      ctx.restore();1323    },1324    showType3Text: function CanvasGraphics_showType3Text(glyphs) {1325      // Type3 fonts - each glyph is a "mini-PDF"1326      var ctx = this.ctx;1327      var current = this.current;1328      var font = current.font;1329      var fontSize = current.fontSize;1330      var fontDirection = current.fontDirection;1331      var charSpacing = current.charSpacing;1332      var wordSpacing = current.wordSpacing;1333      var textHScale = current.textHScale * fontDirection;1334      var fontMatrix = current.fontMatrix || FONT_IDENTITY_MATRIX;1335      var glyphsLength = glyphs.length;1336      var isTextInvisible =1337        current.textRenderingMode === TextRenderingMode.INVISIBLE;1338      var i, glyph, width;1339      if (isTextInvisible || fontSize === 0) {1340        return;1341      }1342      ctx.save();1343      ctx.transform.apply(ctx, current.textMatrix);1344      ctx.translate(current.x, current.y);1345      ctx.scale(textHScale, fontDirection);1346      for (i = 0; i < glyphsLength; ++i) {1347        glyph = glyphs[i];1348        if (glyph === null) {1349          // word break1350          this.ctx.translate(wordSpacing, 0);1351          current.x += wordSpacing * textHScale;1352          continue;1353        } else if (isNum(glyph)) {1354          var spacingLength = -glyph * 0.001 * fontSize;1355          this.ctx.translate(spacingLength, 0);1356          current.x += spacingLength * textHScale;1357          continue;1358        }1359        var operatorList = font.charProcOperatorList[glyph.operatorListId];1360        if (!operatorList) {1361          warn('Type3 character \"' + glyph.operatorListId +1362               '\" is not available');1363          continue;1364        }1365        this.processingType3 = glyph;1366        this.save();1367        ctx.scale(fontSize, fontSize);1368        ctx.transform.apply(ctx, fontMatrix);1369        this.executeOperatorList(operatorList);1370        this.restore();1371        var transformed = Util.applyTransform([glyph.width, 0], fontMatrix);1372        width = transformed[0] * fontSize + charSpacing;1373        ctx.translate(width, 0);1374        current.x += width * textHScale;1375      }1376      ctx.restore();1377      this.processingType3 = null;1378    },1379    // Type3 fonts1380    setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) {1381      // We can safely ignore this since the width should be the same1382      // as the width in the Widths array.1383    },1384    setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(xWidth,1385                                                                        yWidth,1386                                                                        llx,1387                                                                        lly,1388                                                                        urx,1389                                                                        ury) {1390      // TODO According to the spec we're also suppose to ignore any operators1391      // that set color or include images while processing this type3 font.1392      this.ctx.rect(llx, lly, urx - llx, ury - lly);1393      this.clip();1394      this.endPath();1395    },1396    // Color1397    getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) {1398      var pattern;1399      if (IR[0] === 'TilingPattern') {1400        var color = IR[1];1401        pattern = new TilingPattern(IR, color, this.ctx, this.objs,1402                                    this.commonObjs, this.baseTransform);1403      } else {1404        pattern = getShadingPatternFromIR(IR);1405      }1406      return pattern;1407    },1408    setStrokeColorN: function CanvasGraphics_setStrokeColorN(/*...*/) {1409      this.current.strokeColor = this.getColorN_Pattern(arguments);1410    },1411    setFillColorN: function CanvasGraphics_setFillColorN(/*...*/) {1412      this.current.fillColor = this.getColorN_Pattern(arguments);1413      this.current.patternFill = true;1414    },1415    setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) {1416      var color = Util.makeCssRgb(r, g, b);1417      this.ctx.strokeStyle = color;1418      this.current.strokeColor = color;1419    },1420    setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) {1421      var color = Util.makeCssRgb(r, g, b);1422      this.ctx.fillStyle = color;1423      this.current.fillColor = color;1424      this.current.patternFill = false;1425    },1426    shadingFill: function CanvasGraphics_shadingFill(patternIR) {1427      var ctx = this.ctx;1428      this.save();1429      var pattern = getShadingPatternFromIR(patternIR);1430      ctx.fillStyle = pattern.getPattern(ctx, this, true);1431      var inv = ctx.mozCurrentTransformInverse;1432      if (inv) {1433        var canvas = ctx.canvas;1434        var width = canvas.width;1435        var height = canvas.height;1436        var bl = Util.applyTransform([0, 0], inv);1437        var br = Util.applyTransform([0, height], inv);1438        var ul = Util.applyTransform([width, 0], inv);1439        var ur = Util.applyTransform([width, height], inv);1440        var x0 = Math.min(bl[0], br[0], ul[0], ur[0]);1441        var y0 = Math.min(bl[1], br[1], ul[1], ur[1]);1442        var x1 = Math.max(bl[0], br[0], ul[0], ur[0]);1443        var y1 = Math.max(bl[1], br[1], ul[1], ur[1]);1444        this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0);1445      } else {1446        // HACK to draw the gradient onto an infinite rectangle.1447        // PDF gradients are drawn across the entire image while1448        // Canvas only allows gradients to be drawn in a rectangle1449        // The following bug should allow us to remove this.1450        // https://bugzilla.mozilla.org/show_bug.cgi?id=6648841451        this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10);1452      }1453      this.restore();1454    },1455    // Images1456    beginInlineImage: function CanvasGraphics_beginInlineImage() {1457      error('Should not call beginInlineImage');1458    },1459    beginImageData: function CanvasGraphics_beginImageData() {1460      error('Should not call beginImageData');1461    },1462    paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(matrix,1463                                                                        bbox) {1464      this.save();1465      this.baseTransformStack.push(this.baseTransform);1466      if (isArray(matrix) && 6 === matrix.length) {1467        this.transform.apply(this, matrix);1468      }1469      this.baseTransform = this.ctx.mozCurrentTransform;1470      if (isArray(bbox) && 4 === bbox.length) {1471        var width = bbox[2] - bbox[0];1472        var height = bbox[3] - bbox[1];1473        this.ctx.rect(bbox[0], bbox[1], width, height);1474        this.clip();1475        this.endPath();1476      }1477    },1478    paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() {1479      this.restore();1480      this.baseTransform = this.baseTransformStack.pop();1481    },1482    beginGroup: function CanvasGraphics_beginGroup(group) {1483      this.save();1484      var currentCtx = this.ctx;1485      // TODO non-isolated groups - according to Rik at adobe non-isolated1486      // group results aren't usually that different and they even have tools1487      // that ignore this setting. Notes from Rik on implmenting:1488      // - When you encounter an transparency group, create a new canvas with1489      // the dimensions of the bbox1490      // - copy the content from the previous canvas to the new canvas1491      // - draw as usual1492      // - remove the backdrop alpha:1493      // alphaNew = 1 - (1 - alpha)/(1 - alphaBackdrop) with 'alpha' the alpha1494      // value of your transparency group and 'alphaBackdrop' the alpha of the1495      // backdrop1496      // - remove background color:1497      // colorNew = color - alphaNew *colorBackdrop /(1 - alphaNew)1498      if (!group.isolated) {1499        info('TODO: Support non-isolated groups.');1500      }1501      // TODO knockout - supposedly possible with the clever use of compositing1502      // modes.1503      if (group.knockout) {1504        warn('Knockout groups not supported.');1505      }1506      var currentTransform = currentCtx.mozCurrentTransform;1507      if (group.matrix) {1508        currentCtx.transform.apply(currentCtx, group.matrix);1509      }1510      assert(group.bbox, 'Bounding box is required.');1511      // Based on the current transform figure out how big the bounding box1512      // will actually be.1513      var bounds = Util.getAxialAlignedBoundingBox(1514                    group.bbox,1515                    currentCtx.mozCurrentTransform);1516      // Clip the bounding box to the current canvas.1517      var canvasBounds = [0,1518                          0,1519                          currentCtx.canvas.width,1520                          currentCtx.canvas.height];1521      bounds = Util.intersect(bounds, canvasBounds) || [0, 0, 0, 0];1522      // Use ceil in case we're between sizes so we don't create canvas that is1523      // too small and make the canvas at least 1x1 pixels.1524      var offsetX = Math.floor(bounds[0]);1525      var offsetY = Math.floor(bounds[1]);1526      var drawnWidth = Math.max(Math.ceil(bounds[2]) - offsetX, 1);1527      var drawnHeight = Math.max(Math.ceil(bounds[3]) - offsetY, 1);1528      var scaleX = 1, scaleY = 1;1529      if (drawnWidth > MAX_GROUP_SIZE) {1530        scaleX = drawnWidth / MAX_GROUP_SIZE;1531        drawnWidth = MAX_GROUP_SIZE;1532      }1533      if (drawnHeight > MAX_GROUP_SIZE) {1534        scaleY = drawnHeight / MAX_GROUP_SIZE;1535        drawnHeight = MAX_GROUP_SIZE;1536      }1537      var cacheId = 'groupAt' + this.groupLevel;1538      if (group.smask) {1539        // Using two cache entries is case if masks are used one after another.1540        cacheId +=  '_smask_' + ((this.smaskCounter++) % 2);1541      }1542      var scratchCanvas = CachedCanvases.getCanvas(1543        cacheId, drawnWidth, drawnHeight, true);1544      var groupCtx = scratchCanvas.context;1545      // Since we created a new canvas that is just the size of the bounding box1546      // we have to translate the group ctx.1547      groupCtx.scale(1 / scaleX, 1 / scaleY);1548      groupCtx.translate(-offsetX, -offsetY);1549      groupCtx.transform.apply(groupCtx, currentTransform);1550      if (group.smask) {1551        // Saving state and cached mask to be used in setGState.1552        this.smaskStack.push({1553          canvas: scratchCanvas.canvas,1554          context: groupCtx,1555          offsetX: offsetX,1556          offsetY: offsetY,1557          scaleX: scaleX,1558          scaleY: scaleY,1559          subtype: group.smask.subtype,1560          backdrop: group.smask.backdrop1561        });1562      } else {1563        // Setup the current ctx so when the group is popped we draw it at the1564        // right location.1565        currentCtx.setTransform(1, 0, 0, 1, 0, 0);1566        currentCtx.translate(offsetX, offsetY);1567        currentCtx.scale(scaleX, scaleY);1568      }1569      // The transparency group inherits all off the current graphics state1570      // except the blend mode, soft mask, and alpha constants.1571      copyCtxState(currentCtx, groupCtx);1572      this.ctx = groupCtx;1573      this.setGState([1574        ['BM', 'Normal'],1575        ['ca', 1],1576        ['CA', 1]1577      ]);1578      this.groupStack.push(currentCtx);1579      this.groupLevel++;1580    },1581    endGroup: function CanvasGraphics_endGroup(group) {1582      this.groupLevel--;1583      var groupCtx = this.ctx;1584      this.ctx = this.groupStack.pop();1585      // Turn off image smoothing to avoid sub pixel interpolation which can1586      // look kind of blurry for some pdfs.1587      if (this.ctx.imageSmoothingEnabled !== undefined) {1588        this.ctx.imageSmoothingEnabled = false;1589      } else {1590        this.ctx.mozImageSmoothingEnabled = false;1591      }1592      if (group.smask) {1593        this.tempSMask = this.smaskStack.pop();1594      } else {1595        this.ctx.drawImage(groupCtx.canvas, 0, 0);1596      }1597      this.restore();1598    },1599    beginAnnotations: function CanvasGraphics_beginAnnotations() {1600      this.save();1601      this.current = new CanvasExtraState();1602      // Odoo: fix issue with annotation position https://github.com/mozilla/pdf.js/pull/68141603      if (this.baseTransform) {1604        this.ctx.setTransform.apply(this.ctx, this.baseTransform);1605      }1606    },1607    endAnnotations: function CanvasGraphics_endAnnotations() {1608      this.restore();1609    },1610    beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform,1611                                                             matrix) {1612      this.save();1613      if (isArray(rect) && 4 === rect.length) {1614        var width = rect[2] - rect[0];1615        var height = rect[3] - rect[1];1616        this.ctx.rect(rect[0], rect[1], width, height);1617        this.clip();1618        this.endPath();1619      }1620      this.transform.apply(this, transform);1621      this.transform.apply(this, matrix);1622    },1623    endAnnotation: function CanvasGraphics_endAnnotation() {1624      this.restore();1625    },1626    paintJpegXObject: function CanvasGraphics_paintJpegXObject(objId, w, h) {1627      var domImage = this.objs.get(objId);1628      if (!domImage) {1629        warn('Dependent image isn\'t ready yet');1630        return;1631      }1632      this.save();1633      var ctx = this.ctx;1634      // scale the image to the unit square1635      ctx.scale(1 / w, -1 / h);1636      ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height,1637                    0, -h, w, h);1638      if (this.imageLayer) {1639        var currentTransform = ctx.mozCurrentTransformInverse;1640        var position = this.getCanvasPosition(0, 0);1641        this.imageLayer.appendImage({1642          objId: objId,1643          left: position[0],1644          top: position[1],1645          width: w / currentTransform[0],1646          height: h / currentTransform[3]1647        });1648      }1649      this.restore();1650    },1651    paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) {1652      var ctx = this.ctx;1653      var width = img.width, height = img.height;1654      var fillColor = this.current.fillColor;1655      var isPatternFill = this.current.patternFill;1656      var glyph = this.processingType3;1657      if (COMPILE_TYPE3_GLYPHS && glyph && glyph.compiled === undefined) {1658        if (width <= MAX_SIZE_TO_COMPILE && height <= MAX_SIZE_TO_COMPILE) {1659          glyph.compiled =1660            compileType3Glyph({data: img.data, width: width, height: height});1661        } else {1662          glyph.compiled = null;1663        }1664      }1665      if (glyph && glyph.compiled) {1666        glyph.compiled(ctx);1667        return;1668      }1669      var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height);1670      var maskCtx = maskCanvas.context;1671      maskCtx.save();1672      putBinaryImageMask(maskCtx, img);1673      maskCtx.globalCompositeOperation = 'source-in';1674      maskCtx.fillStyle = isPatternFill ?...

Using AI Code Generation

1var fs = require('fs');2var wptools = require('wptools');3var font = new wptools.Font();4font.importFont(fs.readFileSync('test.ttf'));5var glyph = font.compileType3Glyph(0x41, {x: 0, y: 0}, 1000, 1000);6var glyph2 = font.compileType3Glyph(0x42, {x: 0, y: 0}, 1000, 1000);7fs.writeFileSync('glyph.pdf', glyph);8fs.writeFileSync('glyph2.pdf', glyph2);

Using AI Code Generation

1var wptextlayout = require('wptextlayout');2var font = new wptextlayout.Font();3font.loadSync('C:\\Windows\\Fonts\\arial.ttf');4var glyph = font.compileType3Glyph('A', 12);5var wptextlayout = require('wptextlayout');6var font = new wptextlayout.Font();7font.loadSync('C:\\Windows\\Fonts\\arial.ttf');8var glyph = font.compileType3Glyph('A', 12);

Using AI Code Generation

1var fs = require('fs');2var path = require('path');3var fontFile = path.join(__dirname, 'fonts', 'Roboto-Regular.ttf');4var fontSize = 100;5var font = new wptools.Font(fontFile);6var glyph = font.getGlyph(glyphCode);7var glyphPath = glyph.compileType3Glyph(fontSize);8var svgPath = glyph.compileSVGPath(fontSize);9    + '</svg>\n';10fs.writeFileSync(path.join(__dirname, 'output', 'test.svg'), svg);11fs.writeFileSync(path.join(__dirname, 'output', 'test.glyph'), glyphPath);12console.log('done');

Using AI Code Generation

1var wptools = require("wptools");2var fs = require("fs");3var path = require("path");4var font = new wptools.Font();5font.importFont("test.ttf");6var type3Glyph = font.compileType3Glyph({7  charStrings: {8    "a": {

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.