Merge branch 'master' of https://github.com/andreasgal/pdf.js
This commit is contained in:
vivien
commit
a14b83c5c6
121
pdf.js
121
pdf.js
@ -4148,9 +4148,13 @@ var CanvasGraphics = (function() {
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this.setStrokeRGBColor.apply(this, color);
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},
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setStrokeColorN: function(/*...*/) {
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// TODO real impl
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TODO('check for special color spaces');
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this.setStrokeColor.apply(this, arguments);
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var cs = this.getStrokeColorSpace();
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if (cs.name == 'Pattern') {
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this.ctx.strokeStyle = this.getPattern(cs, arguments);
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} else {
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this.setStrokeColor.apply(this, arguments);
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}
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},
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setFillColor: function(/*...*/) {
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var cs = this.getFillColorSpace();
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@ -4161,28 +4165,25 @@ var CanvasGraphics = (function() {
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var cs = this.getFillColorSpace();
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if (cs.name == 'Pattern') {
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var length = arguments.length;
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var base = cs.base;
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if (base) {
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var baseComps = base.numComps;
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if (baseComps != length - 1)
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error("invalid base color for pattern colorspace");
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var color = [];
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for (var i = 0; i < baseComps; ++i)
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color.push(arguments[i]);
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color = base.getRgb(color);
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}
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var patternName = arguments[length - 1];
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this.setFillPattern(patternName, base, color);
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this.ctx.fillStyle = this.getPattern(cs, arguments);
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} else {
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// TODO real impl
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this.setFillColor.apply(this, arguments);
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}
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},
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setFillPattern: function(patternName, baseCS, color) {
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getPattern: function(cs, args) {
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var length = args.length;
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var base = cs.base;
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if (base) {
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var baseComps = base.numComps;
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var color = [];
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for (var i = 0; i < baseComps; ++i)
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color.push(args[i]);
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color = base.getRgb(color);
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}
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var patternName = args[length - 1];
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if (!IsName(patternName))
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error("Bad args to getPattern");
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@ -4194,36 +4195,26 @@ var CanvasGraphics = (function() {
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var pattern = xref.fetchIfRef(patternRes.get(patternName.name));
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var dict = IsStream(pattern) ? pattern.dict : pattern;
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var types = [null, this.setTilingPattern, this.setShadingPattern];
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var types = [null, this.getTilingPattern, this.getShadingPattern];
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var typeNum = dict.get("PatternType");
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var patternFn = types[typeNum];
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if (!patternFn)
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error("Unhandled pattern type");
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patternFn.call(this, pattern, dict, baseCS, color);
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return patternFn.call(this, pattern, dict, color);
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},
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setShadingPattern: function(pattern, dict) {
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getShadingPattern: function(pattern, dict) {
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var matrix = dict.get("Matrix");
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var inv = [0,0,0,0,0,0];
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var det = 1 / (matrix[0] * matrix[3] - matrix[1] * matrix[2]);
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inv[0] = matrix[3] * det;
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inv[1] = -matrix[1] * det;
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inv[2] = -matrix[2] * det;
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inv[3] = matrix[0] * det;
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inv[4] = det * (matrix[2] * matrix[5] - matrix[3] * matrix[4]);
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inv[5] = det * (matrix[1] * matrix[4] - matrix[0] * matrix[5]);
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this.save();
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this.transform.apply(this, matrix);
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var shading = this.getShading(pattern.get("Shading"));
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this.ctx.fillStyle = shading;
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this.restore();
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// HACK to get the gradient to show at the right location. If
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// removed, the gradient will show at the pre-transform coordinates.
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this.ctx.fillRect(0,0,0,0);
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this.transform.apply(this, inv);
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TODO('store transform so it can be applied before every fill');
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return shading;
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},
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setTilingPattern: function(pattern, dict, baseCS, color) {
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getTilingPattern: function(pattern, dict, color) {
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function multiply(m, tm) {
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var a = m[0] * tm[0] + m[1] * tm[2];
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var b = m[0] * tm[1] + m[1] * tm[3];
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@ -4257,8 +4248,10 @@ var CanvasGraphics = (function() {
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var height = botRight[1] - topLeft[1];
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// TODO: hack to avoid OOM, remove then pattern code is fixed
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if (Math.abs(width) > 8192 || Math.abs(height) > 8192)
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return false;
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if (Math.abs(width) > 8192 || Math.abs(height) > 8192) {
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this.restore();
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return 'hotpink';
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}
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var tmpCanvas = new this.ScratchCanvas(width, height);
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@ -4270,13 +4263,13 @@ var CanvasGraphics = (function() {
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var paintType = dict.get('PaintType');
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switch (paintType) {
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case PAINT_TYPE_COLORED:
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// should go to default for color space
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tmpCtx.fillStyle = this.makeCssRgb(1, 1, 1);
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tmpCtx.strokeStyle = this.makeCssRgb(0, 0, 0);
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tmpCtx.fillStyle = savedCtx.fillStyle;
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tmpCtx.strokeStyle = savedCtx.strokeStyle;
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break;
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case PAINT_TYPE_UNCOLORED:
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tmpCtx.fillStyle = this.makeCssRgb.apply(this, baseCS.getRgb(color));
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tmpCtx.strokeStyle = this.makeCssRgb.apply(this, baseCS.getRgb(color));
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color = this.makeCssRgb.apply(this, color);
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tmpCtx.fillStyle = color;
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tmpCtx.strokeStyle = color;
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break;
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default:
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error('Unsupported paint type');
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@ -4310,9 +4303,7 @@ var CanvasGraphics = (function() {
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this.ctx = savedCtx;
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this.restore();
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TODO('Inverse pattern is painted');
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pattern = this.ctx.createPattern(tmpCanvas, 'repeat');
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this.ctx.fillStyle = pattern;
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return this.ctx.createPattern(tmpCanvas, 'repeat');
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},
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setStrokeGray: function(gray) {
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this.setStrokeRGBColor(gray, gray, gray);
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@ -4382,6 +4373,8 @@ var CanvasGraphics = (function() {
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this.restore();
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},
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getShading: function(shading) {
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this.save();
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shading = this.xref.fetchIfRef(shading);
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var dict = IsStream(shading) ? shading.dict : shading;
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@ -4406,6 +4399,8 @@ var CanvasGraphics = (function() {
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var typeNum = dict.get('ShadingType');
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var shadingFn = types[typeNum];
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this.restore();
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// Most likely we will not implement other types of shading
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// unless the browser supports them
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@ -4498,7 +4493,6 @@ var CanvasGraphics = (function() {
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gradient.addColorStop((i - t0) / diff,
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this.makeCssRgb.apply(this, rgbColor));
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}
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return gradient;
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},
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@ -5371,9 +5365,28 @@ var PDFFunction = (function() {
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}
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return array;
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},
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constructInterpolated: function() {
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TODO('unhandled type of function');
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this.func = function () { return [ 255, 105, 180 ]; }
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constructInterpolated: function(str, dict) {
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var c0 = dict.get('C0') || [0];
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var c1 = dict.get('C1') || [1];
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var n = dict.get('N');
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if (!IsArray(c0) || !IsArray(c1))
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error('Illegal dictionary for interpolated function');
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var length = c0.length;
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var diff = [];
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for (var i = 0; i < length; ++i)
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diff.push(c1[i] - c0[i]);
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this.func = function (args) {
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var x = args[0];
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var out = [];
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for (var j = 0; j < length; ++j)
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out.push(c0[j] + (x^n * diff[i]));
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return out;
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}
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},
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constructStiched: function() {
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TODO('unhandled type of function');
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