patterns working
This commit is contained in:
sbarman
parent
7986c35213
commit
9dcac17a3e
362
pdf.js
362
pdf.js
@ -2969,6 +2969,7 @@ var Page = (function() {
|
||||
var fonts = [ ];
|
||||
|
||||
this.compile(gfx, fonts);
|
||||
fonts = []
|
||||
stats.compile = Date.now();
|
||||
|
||||
FontLoader.bind(
|
||||
@ -3901,9 +3902,6 @@ var CanvasGraphics = (function() {
|
||||
var NORMAL_CLIP = {};
|
||||
var EO_CLIP = {};
|
||||
|
||||
// Used for tiling patterns
|
||||
var PAINT_TYPE_COLORED = 1, PAINT_TYPE_UNCOLORED = 2;
|
||||
|
||||
constructor.prototype = {
|
||||
beginDrawing: function(mediaBox) {
|
||||
var cw = this.ctx.canvas.width, ch = this.ctx.canvas.height;
|
||||
@ -4019,11 +4017,9 @@ var CanvasGraphics = (function() {
|
||||
var fillColor = this.current.fillColor;
|
||||
|
||||
if (fillColor.type === "Pattern") {
|
||||
this.ctx.fillStyle = fillColor.getPattern(ctx);
|
||||
ctx.fill();
|
||||
} else {
|
||||
ctx.fill();
|
||||
ctx.fillStyle = fillColor.getPattern(ctx);
|
||||
}
|
||||
ctx.fill();
|
||||
|
||||
this.consumePath();
|
||||
},
|
||||
@ -4227,7 +4223,7 @@ var CanvasGraphics = (function() {
|
||||
var cs = this.current.strokeColorSpace;
|
||||
|
||||
if (cs.name == 'Pattern') {
|
||||
this.ctx.strokeStyle = this.getPattern(cs, arguments);
|
||||
// this.ctx.strokeStyle = this.getPattern(cs, arguments);
|
||||
} else {
|
||||
this.setStrokeColor.apply(this, arguments);
|
||||
}
|
||||
@ -4242,7 +4238,7 @@ var CanvasGraphics = (function() {
|
||||
|
||||
if (cs.name == 'Pattern') {
|
||||
// wait until fill to actually get the pattern
|
||||
var pattern = Pattern.parse(cs, arguments, this.xref, this.res,
|
||||
var pattern = Pattern.parse(arguments, cs, this.xref, this.res,
|
||||
this.ctx);
|
||||
this.current.fillColor = pattern;
|
||||
this.current.fillColor.type = "Pattern";
|
||||
@ -4250,8 +4246,6 @@ var CanvasGraphics = (function() {
|
||||
this.setFillColor.apply(this, arguments);
|
||||
}
|
||||
},
|
||||
getPattern: function(cs, args) {
|
||||
},
|
||||
getShadingPattern: function(pattern, dict) {
|
||||
// TODO('store transform so it can be applied before every fill');
|
||||
// return shading;
|
||||
@ -4297,7 +4291,7 @@ var CanvasGraphics = (function() {
|
||||
var shadingFill = Pattern.parseShading(shading, null, xref, res, ctx);
|
||||
|
||||
this.save();
|
||||
ctx.fillStyle = shadingFill.getPattern(ctx);
|
||||
ctx.fillStyle = shadingFill.getPattern();
|
||||
|
||||
var inv = ctx.mozCurrentTransformInverse;
|
||||
if (inv) {
|
||||
@ -4328,12 +4322,6 @@ var CanvasGraphics = (function() {
|
||||
|
||||
this.restore();
|
||||
},
|
||||
getShading: function(shading) {
|
||||
},
|
||||
getAxialShading: function(sh, cs) {
|
||||
},
|
||||
getRadialShading: function(sh, cs) {
|
||||
},
|
||||
|
||||
// Images
|
||||
beginInlineImage: function() {
|
||||
@ -4534,8 +4522,6 @@ var ColorSpace = (function() {
|
||||
}
|
||||
}
|
||||
|
||||
if (!xref.fetchIfRef)
|
||||
console.log("blah");
|
||||
cs = xref.fetchIfRef(cs);
|
||||
|
||||
if (IsName(cs)) {
|
||||
@ -4872,7 +4858,7 @@ var Pattern = (function() {
|
||||
},
|
||||
};
|
||||
|
||||
constructor.parse = function pattern_parse(cs, args, xref, res, ctx) {
|
||||
constructor.parse = function pattern_parse(args, cs, xref, res, ctx) {
|
||||
var length = args.length;
|
||||
|
||||
var patternName = args[length - 1];
|
||||
@ -4885,20 +4871,8 @@ var Pattern = (function() {
|
||||
|
||||
var pattern = xref.fetchIfRef(patternRes.get(patternName.name));
|
||||
var dict = IsStream(pattern) ? pattern.dict : pattern;
|
||||
|
||||
var typeNum = dict.get("PatternType");
|
||||
|
||||
var matrix = dict.get('Matrix');
|
||||
var patMatrix = ctx.mozCurrentTransform;
|
||||
if (patMatrix) {
|
||||
if (matrix) {
|
||||
ctx.save();
|
||||
ctx.transform.apply(ctx, matrix);
|
||||
patMatrix = ctx.mozCurrentTransform;
|
||||
ctx.restore();
|
||||
}
|
||||
}
|
||||
|
||||
switch(typeNum) {
|
||||
case 1:
|
||||
var base = cs.base;
|
||||
@ -4912,51 +4886,53 @@ var Pattern = (function() {
|
||||
|
||||
color = base.getRgb(color);
|
||||
}
|
||||
return new TilingPattern(pattern, dict, color);
|
||||
return new TilingPattern(pattern, dict, color, xref, ctx);
|
||||
break;
|
||||
case 2:
|
||||
var shading = xref.fetchIfRef(pattern.get('Shading'));
|
||||
return Pattern.parseShading(shading, patMatrix, xref, res, ctx);
|
||||
var shading = xref.fetchIfRef(dict.get('Shading'));
|
||||
var matrix = dict.get('Matrix');
|
||||
return Pattern.parseShading(shading, matrix, xref, res, ctx);
|
||||
break;
|
||||
default:
|
||||
error('Unknown type of pattern');
|
||||
}
|
||||
};
|
||||
|
||||
constructor.parseShading = function pattern_shading(shading, patMatrix,
|
||||
constructor.parseShading = function pattern_shading(shading, matrix,
|
||||
xref, res, ctx) {
|
||||
|
||||
var dict = IsStream(shading) ? shading.dict : shading;
|
||||
|
||||
var bbox = dict.get('BBox');
|
||||
var bg = dict.get('Background');
|
||||
|
||||
var cs = dict.get('ColorSpace', 'CS');
|
||||
cs = ColorSpace.parse(cs, xref, res);
|
||||
|
||||
var type = dict.get('ShadingType');
|
||||
|
||||
switch (type) {
|
||||
case 2:
|
||||
return new AxialShading(dict, patMatrix, bbox, cs, bg, xref);
|
||||
return new SimpleShading(dict, matrix, xref, res, ctx);
|
||||
break;
|
||||
case 3:
|
||||
return new RadialShading(dict, patMatrix, bbox, cs, bg, xref);
|
||||
return new SimpleShading(dict, matrix, xref, res, ctx);
|
||||
break;
|
||||
default:
|
||||
return new DummyShading();
|
||||
error('Unsupported shading');
|
||||
}
|
||||
}
|
||||
return constructor;
|
||||
})();
|
||||
|
||||
var AxialShading = (function() {
|
||||
function constructor(dict, patternMatrix, bbox, cs, background, xref) {
|
||||
this.bbox = bbox;
|
||||
this.cs = cs;
|
||||
this.background = background;
|
||||
this.patternMatrix = patternMatrix;
|
||||
|
||||
var SimpleShading = (function() {
|
||||
function constructor(dict, matrix, xref, res, ctx) {
|
||||
this.matrix = matrix;
|
||||
var bbox = dict.get('BBox');
|
||||
var background = dict.get('Background');
|
||||
this.coordsArr = dict.get('Coords');
|
||||
this.shadingType = dict.get('ShadingType');
|
||||
|
||||
this.ctx = ctx;
|
||||
this.curMatrix = ctx.mozCurrentTransform;
|
||||
console.log(ctx.mozCurrentTransform);
|
||||
|
||||
var cs = dict.get('ColorSpace', 'CS');
|
||||
cs = ColorSpace.parse(cs, xref, res);
|
||||
this.cs = cs;
|
||||
|
||||
var t0 = 0.0, t1 = 1.0;
|
||||
if (dict.has('Domain')) {
|
||||
@ -4999,40 +4975,60 @@ var AxialShading = (function() {
|
||||
};
|
||||
|
||||
constructor.prototype = {
|
||||
getPattern: function(ctx) {
|
||||
getPattern: function() {
|
||||
var coordsArr = this.coordsArr;
|
||||
var x0 = coordsArr[0], y0 = coordsArr[1];
|
||||
var x1 = coordsArr[2], y1 = coordsArr[3];
|
||||
var type = this.shadingType;
|
||||
if (type == 2) {
|
||||
var p0 = [coordsArr[0], coordsArr[1]];
|
||||
var p1 = [coordsArr[2], coordsArr[3]];
|
||||
} else if (type == 3) {
|
||||
var p0 = [coordsArr[0], coordsArr[1]];
|
||||
var p1 = [coordsArr[3], coordsArr[4]];
|
||||
var r0 = coordsArr[2], r1 = coordsArr[5]
|
||||
} else {
|
||||
error()
|
||||
}
|
||||
|
||||
var matrix = this.matrix;
|
||||
if (matrix) {
|
||||
p0 = this.applyTransform(p0, matrix);
|
||||
p1 = this.applyTransform(p1, matrix);
|
||||
}
|
||||
|
||||
// if the browser supports getting the tranform matrix, convert
|
||||
// gradient coordinates from pattern space to current user space
|
||||
var patternMatrix = this.patternMatrix;
|
||||
if (patternMatrix) {
|
||||
var curMatrix = this.curMatrix;
|
||||
var ctx = this.ctx;
|
||||
if (curMatrix) {
|
||||
var userMatrix = ctx.mozCurrentTransformInverse;
|
||||
console.log(p0 + ',' + p1);
|
||||
console.log(curMatrix);
|
||||
console.log(userMatrix);
|
||||
|
||||
var p = this.applyTransform(x0, y0, patternMatrix);
|
||||
p = this.applyTransform(p[0], p[1], userMatrix);
|
||||
x0 = p[0];
|
||||
y0 = p[1];
|
||||
p0 = this.applyTransform(p0, curMatrix);
|
||||
p0 = this.applyTransform(p0, userMatrix);
|
||||
console.log(p0);
|
||||
|
||||
var p = this.applyTransform(x1, y1, patternMatrix);
|
||||
p = this.applyTransform(p[0], p[1], userMatrix);
|
||||
x1 = p[0];
|
||||
y1 = p[1];
|
||||
p1 = this.applyTransform(p1, curMatrix);
|
||||
p1 = this.applyTransform(p1, userMatrix);
|
||||
console.log(p0 + ',' + p1);
|
||||
}
|
||||
|
||||
var colorStops = this.colorStops;
|
||||
var gradient =
|
||||
ctx.createLinearGradient(x0, y0, x1, y1);
|
||||
if (type == 2)
|
||||
var grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
|
||||
else if (type == 3)
|
||||
var grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1);
|
||||
|
||||
for (var i = 0, ii = colorStops.length; i < ii; ++i) {
|
||||
var c = colorStops[i];
|
||||
gradient.addColorStop(c[0], c[1]);
|
||||
grad.addColorStop(c[0], c[1]);
|
||||
}
|
||||
return gradient;
|
||||
return grad;
|
||||
},
|
||||
applyTransform: function(x0, y0, m) {
|
||||
var xt = x0 * m[0] + y0 * m[2] + m[4];
|
||||
var yt = x0 * m[1] + y0 * m[3] + m[5];
|
||||
applyTransform: function(p, m) {
|
||||
var xt = p[0] * m[0] + p[1] * m[2] + m[4];
|
||||
var yt = p[0] * m[1] + p[1] * m[3] + m[5];
|
||||
return [xt, yt];
|
||||
},
|
||||
makeCssRgb: function(r, g, b) {
|
||||
@ -5043,63 +5039,85 @@ var AxialShading = (function() {
|
||||
return constructor;
|
||||
})();
|
||||
|
||||
var RadialShading = (function() {
|
||||
function constructor(dict, patternMatrix, bbox, cs, background, xref) {
|
||||
this.bbox = bbox;
|
||||
this.cs = cs;
|
||||
this.background = background;
|
||||
this.patternMatrix = patternMatrix;
|
||||
var TilingPattern = (function() {
|
||||
var PAINT_TYPE_COLORED = 1, PAINT_TYPE_UNCOLORED = 2;
|
||||
|
||||
this.coordsArr = dict.get('Coords');
|
||||
function constructor(pattern, dict, color, patMatrix, xref, ctx) {
|
||||
function multiply(m, tm) {
|
||||
var a = m[0] * tm[0] + m[1] * tm[2];
|
||||
var b = m[0] * tm[1] + m[1] * tm[3];
|
||||
var c = m[2] * tm[0] + m[3] * tm[2];
|
||||
var d = m[2] * tm[1] + m[3] * tm[3];
|
||||
var e = m[4] * tm[0] + m[5] * tm[2] + tm[4];
|
||||
var f = m[4] * tm[1] + m[5] * tm[3] + tm[5];
|
||||
return [a, b, c, d, e, f];
|
||||
};
|
||||
|
||||
var t0 = 0.0, t1 = 1.0;
|
||||
if (dict.has('Domain')) {
|
||||
var domainArr = dict.get('Domain');
|
||||
t0 = domainArr[0], t1 = domainArr[1];
|
||||
|
||||
TODO('TilingType');
|
||||
|
||||
this.patMatrix = patMatrix;
|
||||
|
||||
var bbox = dict.get('BBox');
|
||||
var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3];
|
||||
|
||||
var xstep = dict.get('XStep');
|
||||
var ystep = dict.get('YStep');
|
||||
|
||||
var topLeft = [x0, y0];
|
||||
// we want the canvas to be as large as the step size
|
||||
var botRight = [x0 + xstep, y0 + ystep]
|
||||
|
||||
var width = botRight[0] - topLeft[0];
|
||||
var height = botRight[1] - topLeft[1];
|
||||
|
||||
// TODO: hack to avoid OOM, remove then pattern code is fixed
|
||||
while (Math.abs(width) > 8192 || Math.abs(height) > 8192) {
|
||||
width /= 2;
|
||||
height /= 2;
|
||||
}
|
||||
|
||||
var extendStart = false, extendEnd = false;
|
||||
if (dict.has('Extend')) {
|
||||
var extendArr = dict.get('Extend');
|
||||
extendStart = extendArr[0], extendEnd = extendArr[1];
|
||||
TODO('Support extend');
|
||||
var tmpCanvas = new ScratchCanvas(width, height);
|
||||
|
||||
// set the new canvas element context as the graphics context
|
||||
var tmpCtx = tmpCanvas.getContext('2d');
|
||||
var graphics = new CanvasGraphics(tmpCtx);
|
||||
|
||||
var paintType = dict.get('PaintType');
|
||||
switch (paintType) {
|
||||
case PAINT_TYPE_COLORED:
|
||||
tmpCtx.fillStyle = ctx.fillStyle;
|
||||
tmpCtx.strokeStyle = ctx.strokeStyle;
|
||||
break;
|
||||
case PAINT_TYPE_UNCOLORED:
|
||||
color = this.makeCssRgb.apply(this, color);
|
||||
tmpCtx.fillStyle = color;
|
||||
tmpCtx.strokeStyle = color;
|
||||
break;
|
||||
default:
|
||||
error('Unsupported paint type');
|
||||
}
|
||||
|
||||
this.extendStart = extendStart;
|
||||
this.extendEnd = extendEnd;
|
||||
// transform coordinates to pattern space
|
||||
var tmpTransform = [width / xstep, 0, 0, height / ystep, -topLeft[0], -topLeft[1]];
|
||||
graphics.transform.apply(graphics, matrix);
|
||||
|
||||
var fnObj = dict.get('Function');
|
||||
fnObj = xref.fetchIfRef(fnObj);
|
||||
if (IsArray(fnObj))
|
||||
error('No support for array of functions');
|
||||
else if (!IsPDFFunction(fnObj))
|
||||
error('Invalid function');
|
||||
var fn = new PDFFunction(xref, fnObj);
|
||||
|
||||
// 10 samples seems good enough for now, but probably won't work
|
||||
// if there are sharp color changes. Ideally, we would implement
|
||||
// the spec faithfully and add lossless optimizations.
|
||||
var step = (t1 - t0) / 10;
|
||||
var diff = t1 - t0;
|
||||
|
||||
var colorStops = [];
|
||||
for (var i = t0; i <= t1; i += step) {
|
||||
var color = fn.func([i]);
|
||||
var rgbColor = this.makeCssRgb.apply(this, cs.getRgb(color));
|
||||
colorStops.push([(i - t0) / diff, rgbColor]);
|
||||
if (bbox && IsArray(bbox) && 4 == bbox.length) {
|
||||
graphics.rectangle.apply(graphics, bbox);
|
||||
graphics.clip();
|
||||
graphics.endPath();
|
||||
}
|
||||
|
||||
this.colorStops = colorStops;
|
||||
var res = xref.fetchIfRef(dict.get('Resources'));
|
||||
if (!pattern.code)
|
||||
pattern.code = graphics.compile(pattern, xref, res, []);
|
||||
graphics.execute(pattern.code, xref, res);
|
||||
|
||||
this.canvas = tmpCanvas;
|
||||
};
|
||||
|
||||
constructor.prototype = {
|
||||
getPattern: function(ctx) {
|
||||
var coordsArr = this.coordsArr;
|
||||
var x0 = coordsArr[0], y0 = coordsArr[1], r0 = coordsArr[2];
|
||||
var x1 = coordsArr[3], y1 = coordsArr[4], r1 = coordsArr[5];
|
||||
|
||||
// if the browser supports getting the tranform matrix, convert
|
||||
// gradient coordinates from pattern space to current user space
|
||||
getPattern: function tiling_getPattern(ctx) {
|
||||
var patternMatrix = this.patternMatrix;
|
||||
if (patternMatrix) {
|
||||
var userMatrix = ctx.mozCurrentTransformInverse;
|
||||
@ -5118,11 +5136,10 @@ var RadialShading = (function() {
|
||||
var colorStops = this.colorStops;
|
||||
var gradient =
|
||||
ctx.createRadialGradient(x0, y0, r0, x1, y1, r1);
|
||||
for (var i = 0, ii = colorStops.length; i < ii; ++i) {
|
||||
for (var i = 0, ii = colorStops.length; i < ii; ++i)
|
||||
var c = colorStops[i];
|
||||
gradient.addColorStop(c[0], c[1]);
|
||||
}
|
||||
return gradient;
|
||||
ctx.transform.apply
|
||||
return ctx.createPattern(this.canvas, 'repeat');
|
||||
},
|
||||
applyTransform: function(x0, y0, m) {
|
||||
var xt = x0 * m[0] + y0 * m[2] + m[4];
|
||||
@ -5134,105 +5151,6 @@ var RadialShading = (function() {
|
||||
return 'rgb(' + ri + ',' + gi + ',' + bi + ')';
|
||||
}
|
||||
};
|
||||
|
||||
return constructor;
|
||||
})();
|
||||
|
||||
var TilingPattern = (function() {
|
||||
function constructor(tiling) {
|
||||
function multiply(m, tm) {
|
||||
var a = m[0] * tm[0] + m[1] * tm[2];
|
||||
var b = m[0] * tm[1] + m[1] * tm[3];
|
||||
var c = m[2] * tm[0] + m[3] * tm[2];
|
||||
var d = m[2] * tm[1] + m[3] * tm[3];
|
||||
var e = m[4] * tm[0] + m[5] * tm[2] + tm[4];
|
||||
var f = m[4] * tm[1] + m[5] * tm[3] + tm[5];
|
||||
return [a, b, c, d, e, f];
|
||||
};
|
||||
|
||||
this.save();
|
||||
var ctx = this.ctx;
|
||||
|
||||
|
||||
TODO('TilingType');
|
||||
|
||||
var matrix = dict.get('Matrix') || IDENTITY_MATRIX;
|
||||
|
||||
var bbox = dict.get('BBox');
|
||||
var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3];
|
||||
|
||||
var xstep = dict.get('XStep');
|
||||
var ystep = dict.get('YStep');
|
||||
|
||||
// top left corner should correspond to the top left of the bbox
|
||||
var topLeft = this.applyTransform(x0, y0, matrix);
|
||||
// we want the canvas to be as large as the step size
|
||||
var botRight = this.applyTransform(x0 + xstep, y0 + ystep, matrix);
|
||||
|
||||
var width = botRight[0] - topLeft[0];
|
||||
var height = botRight[1] - topLeft[1];
|
||||
|
||||
// TODO: hack to avoid OOM, remove then pattern code is fixed
|
||||
if (Math.abs(width) > 8192 || Math.abs(height) > 8192) {
|
||||
this.restore();
|
||||
return 'hotpink';
|
||||
}
|
||||
|
||||
var tmpCanvas = new this.ScratchCanvas(width, height);
|
||||
|
||||
// set the new canvas element context as the graphics context
|
||||
var tmpCtx = tmpCanvas.getContext('2d');
|
||||
var savedCtx = ctx;
|
||||
this.ctx = tmpCtx;
|
||||
|
||||
var paintType = dict.get('PaintType');
|
||||
switch (paintType) {
|
||||
case PAINT_TYPE_COLORED:
|
||||
tmpCtx.fillStyle = savedCtx.fillStyle;
|
||||
tmpCtx.strokeStyle = savedCtx.strokeStyle;
|
||||
break;
|
||||
case PAINT_TYPE_UNCOLORED:
|
||||
color = this.makeCssRgb.apply(this, color);
|
||||
tmpCtx.fillStyle = color;
|
||||
tmpCtx.strokeStyle = color;
|
||||
break;
|
||||
default:
|
||||
error('Unsupported paint type');
|
||||
}
|
||||
|
||||
// normalize transform matrix so each step
|
||||
// takes up the entire tmpCanvas (need to remove white borders)
|
||||
if (matrix[1] === 0 && matrix[2] === 0) {
|
||||
matrix[0] = tmpCanvas.width / xstep;
|
||||
matrix[3] = tmpCanvas.height / ystep;
|
||||
topLeft = this.applyTransform(x0, y0, matrix);
|
||||
}
|
||||
|
||||
// move the top left corner of bounding box to [0,0]
|
||||
matrix = multiply(matrix, [1, 0, 0, 1, -topLeft[0], -topLeft[1]]);
|
||||
|
||||
this.transform.apply(this, matrix);
|
||||
|
||||
if (bbox && IsArray(bbox) && 4 == bbox.length) {
|
||||
this.rectangle.apply(this, bbox);
|
||||
this.clip();
|
||||
this.endPath();
|
||||
}
|
||||
|
||||
var xref = this.xref;
|
||||
var res = xref.fetchIfRef(dict.get('Resources'));
|
||||
if (!pattern.code)
|
||||
pattern.code = this.compile(pattern, xref, res, []);
|
||||
this.execute(pattern.code, xref, res);
|
||||
|
||||
this.ctx = savedCtx;
|
||||
this.restore();
|
||||
|
||||
return this.ctx.createPattern(tmpCanvas, 'repeat');
|
||||
};
|
||||
|
||||
constructor.prototype = {
|
||||
};
|
||||
return constructor;
|
||||
})();
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user