this.gfx = graphics;
}
- const MAX_ARGS = 33;
- const CMD_TABLE = {
- // Graphics state
- w : { params: [ "Num" ],
- op: function(args) {
- this.gfx.setLineWidth(args[0]);
- } },
- d : { params: [ "Array", "Num" ],
- op: function(args) {
- this.gfx.setDash(args[0], args[1]);
- } },
- q : { params: [ ],
- op: function(args) {
- this.gfx.save();
- } },
- Q : { params: [ ],
- op: function(args) {
- this.gfx.restore();
- } },
- cm: { params: [ "Num", "Num", "Num", "Num", "Num", "Num" ],
- op: function(args) {
- this.gfx.transform(args[0], args[1], args[2], args[3], args[4], args[5]);
- } },
- // Path
- m : { params: [ "Num", "Num" ],
- op: function(args) {
- this.gfx.moveTo(args[0], args[1]);
- } },
- l : { params: [ "Num", "Num" ],
- op: function(args) {
- this.gfx.lineTo(args[0], args[1]);
- } },
- c : { params: [ "Num", "Num", "Num", "Num", "Num", "Num" ],
- op: function(args) {
- this.gfx.curveTo(args[0], args[1], args[2], args[3], args[4], args[5]);
- } },
- h : { params: [ ],
- op: function(args) {
- this.gfx.closePath();
- } },
- re: { params: [ "Num", "Num", "Num", "Num" ],
- op: function(args) {
- this.gfx.rectangle(args[0], args[1], args[2], args[3]);
- } },
- S : { params: [ ],
- op: function(args) {
- this.gfx.stroke();
- } },
- f : { params: [ ],
- op: function(args) {
- this.gfx.fill();
- } },
- B : { params: [ ],
- op: function(args) {
- this.gfx.fillStroke();
- } },
- b : { params: [ ],
- op: function(args) {
- this.gfx.closeFillStroke();
- } },
- // Clipping
- // Text
- BT: { params: [ ],
- op: function(args) {
- this.gfx.beginText();
- } },
- ET: { params: [ ],
- op: function(args) {
- this.gfx.endText();
- } },
- Tf: { params: [ "Name", "Num" ],
- op: function(args) {
- var font = this.res.Font[args[0]];
- this.gfx.setFont(font, args[1]);
- } },
- Td: { params: [ "Num", "Num" ],
- op: function(args) {
- this.gfx.moveText(args[0], args[1]);
- } },
- Tj: { params: [ "String" ],
- op: function(args) {
- this.gfx.showText(args[0]);
- } },
- // Type3 fonts
- // Color
- g : { params: [ "Num" ],
- op: function(args) {
- this.gfx.setFillGray(args[0]);
- } },
- RG: { params: [ "Num", "Num", "Num" ],
- op: function(args) {
- this.gfx.setStrokeRGBColor(args[0], args[1], args[2]);
- } },
- rg: { params: [ "Num", "Num", "Num" ],
- op: function(args) {
- this.gfx.setFillRGBColor(args[0], args[1], args[2]);
- } },
- // Shading
- // Images
- // XObjects
- // Marked content
- // Compatibility
- };
-
constructor.prototype = {
+ compile: function(parser) {
+ },
interpret: function(obj) {
return this.interpretHelper(new Parser(new Lexer(obj), true));
},
this.gfx.beginDrawing({ x: mediaBox[0], y: mediaBox[1],
width: mediaBox[2] - mediaBox[0],
height: mediaBox[3] - mediaBox[1] });
-
- var args = [ ];
+ var args = [];
+ var gfx = this.gfx;
var obj;
while (!IsEOF(obj = parser.getObj())) {
if (IsCmd(obj)) {
var cmd = obj.cmd;
- if (!(cmd in CMD_TABLE))
- this.error("Unknown command '"+ cmd +"'");
-
- var op = CMD_TABLE[cmd];
- //if (!this.typeCheck(op.params, args))
- //this.error("Wrong arguments for command '"+ cmd +"'");
-
- op.op.call(this, args);
+ var fn = gfx[cmd];
+ if (fn && cmd[0] != "$") {
+ if (fn.length != args.length)
+ this.error("Invalid number of arguments '" + cmd + "'");
+ fn.apply(gfx, args);
+ } else
+ this.error("Unknown command '" + cmd + "'");
args.length = 0;
- } else if (MAX_ARGS == args.length) {
- this.error("Too many arguments");
} else {
- args.push(IsName(obj) ? obj.name : obj);
+ args.push(obj);
}
}
-
this.gfx.endDrawing();
},
- typeCheck: function(params, args) {
- if (params.length != args.length)
- return false;
- for (var i = 0; i < params.length; ++i)
- if (!args[i]["is"+ params[i]]())
- return false;
- return true;
- },
error: function(what) {
throw new Error(what);
},
},
// Graphics state
- setLineWidth: function(width) {
+ w: function(width) { // setLineWidth
this.printdentln(width +" w");
},
- setDash: function(dashArray, dashPhase) {
+ d: function(dashArray, dashPhase) { // setDash
this.printdentln(""+ dashArray +" "+ dashPhase +" d");
},
- save: function() {
+ q: function() { // save
this.printdentln("q");
},
- restore: function() {
+ Q: function() { // restore
this.printdentln("Q");
},
- transform: function(a, b, c, d, e, f) {
+ cm: function(a, b, c, d, e, f) { // transform
this.printdentln(""+ a +" "+ b +" "+ c +
" "+d +" "+ e +" "+ f + " cm");
},
// Path
- moveTo: function(x, y) {
+ m: function(x, y) { // moveTo
this.printdentln(""+ x +" "+ y +" m");
},
- lineTo: function(x, y) {
+ l: function(x, y) { // lineTo
this.printdentln(""+ x +" "+ y +" l");
},
- curveTo: function(x1, y1, x2, y2, x3, y3) {
+ c: function(x1, y1, x2, y2, x3, y3) { // curvoTo
this.printdentln(""+ x1 +" "+ y1 +
" "+ x2 +" "+ y2 +
" "+ x3 +" "+ y3 + " c");
},
- closePath: function() {
+ h: function() { // closePath
this.printdentln("h");
},
- rectangle: function(x, y, width, height) {
+ re: function(x, y, width, height) { // rectangle
this.printdentln(""+ x +" "+ y + " "+ width +" "+ height +" re");
},
- stroke: function() {
+ S: function() { // stroke
this.printdentln("S");
},
- fill: function() {
+ f: function() { // fill
this.printdentln("f");
},
- fillStroke: function() {
+ B: function() { // fillStroke
this.printdentln("B");
},
- closeFillStroke: function() {
+ b: function() { // closeFillStroke
this.printdentln("b");
},
// Clipping
// Text
- beginText: function() {
+ BT: function() { // beginText
this.printdentln("BT");
this.indent();
},
- endText: function() {
+ ET: function() { // endText
this.dedent();
this.printdentln("ET");
},
- setFont: function(font, size) {
- this.printdentln("/"+ font.Name +" "+ size +" Tf");
+ Tf: function(font, size) { // setFont
+ this.printdentln("/"+ font.name +" "+ size +" Tf");
},
- moveText: function (x, y) {
+ Td: function (x, y) { // moveText
this.printdentln(""+ x +" "+ y +" Td");
},
- showText: function(text) {
+ Tj: function(text) { // showText
this.printdentln("( "+ text +" ) Tj");
},
// Type3 fonts
// Color
- setFillGray: function(gray) {
+ g: function(gray) { // setFillGray
this.printdentln(""+ gray +" g");
},
- setStrokeRGBColor: function(r, g, b) {
+ RG: function(r, g, b) { // setStrokeRGBColor
this.printdentln(""+ r +" "+ g +" "+ b +" RG");
},
- setFillRGBColor: function(r, g, b) {
+ rg: function(r, g, b) { // setFillRGBColor
this.printdentln(""+ r +" "+ g +" "+ b +" rg");
},
},
// Graphics state
- setLineWidth: function(width) {
+ w: function(width) { // setLineWidth
this.ctx.lineWidth = width;
},
- setDash: function(dashArray, dashPhase) {
- // NYI
+ d: function(dashArray, dashPhase) { // setDash
+ // TODO
},
- save: function() {
+ q: function() { // save
this.ctx.save();
this.stateStack.push(this.current);
this.current = new CanvasExtraState();
},
- restore: function() {
+ Q: function() { // restore
this.current = this.stateStack.pop();
this.ctx.restore();
},
- transform: function(a, b, c, d, e, f) {
+ cm: function(a, b, c, d, e, f) { // transform
this.ctx.transform(a, b, c, d, e, f);
},
// Path
- moveTo: function(x, y) {
+ m: function(x, y) { // moveTo
this.ctx.moveTo(x, y);
},
- lineTo: function(x, y) {
+ l: function(x, y) { // lineTo
this.ctx.lineTo(x, y);
},
- curveTo: function(x1, y1, x2, y2, x3, y3) {
+ c: function(x1, y1, x2, y2, x3, y3) { // curveTo
this.ctx.bezierCurveTo(x1, y1, x2, y2, x3, y3);
},
- closePath: function() {
+ h: function() { // closePath
this.ctx.closePath();
},
- rectangle: function(x, y, width, height) {
+ re: function(x, y, width, height) { // rectangle
this.ctx.rect(x, y, width, height);
},
- stroke: function() {
+ S: function() { // stroke
this.ctx.stroke();
- this.consumePath();
+ this.$consumePath();
},
- fill: function() {
+ f: function() { // fill
this.ctx.fill();
- this.consumePath();
+ this.$consumePath();
},
- fillStroke: function() {
+ B: function() { // fillStroke
this.ctx.fill();
this.ctx.stroke();
- this.consumePath();
+ this.$consumePath();
},
- closeFillStroke: function() {
- return this.fillStroke();
+ b: function() { // closeFillStroke
+ return this.B(); // fillStroke
},
// Clipping
// Text
- beginText: function() {
-
+ BT: function() { // beginText
+ // TODO
},
- endText: function() {
-
+ ET: function() { // endText
+ // TODO
},
- setFont: function(font, size) {
+ Tf: function(font, size) { // setFont
this.ctx.font = size +'px '+ font.BaseFont;
},
- moveText: function (x, y) {
+ Td: function (x, y) { // moveText
this.current.lineX = x;
this.current.lineY = y;
},
- showText: function(text) {
+ Tj: function(text) { // showText
this.ctx.save();
this.ctx.translate(0, 2 * this.current.lineY);
this.ctx.scale(1, -1);
// Type3 fonts
// Color
- setFillGray: function(gray) {
- this.setFillRGBColor(gray, gray, gray);
+ g: function(gray) { // setFillGray
+ this.rg(gray, gray, gray); // setFillRGBColor
},
- setStrokeRGBColor: function(r, g, b) {
- this.ctx.strokeStyle = this.makeCssRgb(r, g, b);
+ RG: function(r, g, b) { // setStrokeRGBColor
+ this.ctx.strokeStyle = this.$makeCssRgb(r, g, b);
},
- setFillRGBColor: function(r, g, b) {
- this.ctx.fillStyle = this.makeCssRgb(r, g, b);
+ rg: function(r, g, b) { // setFillRGBColor
+ this.ctx.fillStyle = this.$makeCssRgb(r, g, b);
},
- consumePath: function() {
+ // Helper functions that are not allowed to be called directly.
+
+ $consumePath: function() {
this.ctx.beginPath();
},
- makeCssRgb: function(r, g, b) {
+ $makeCssRgb: function(r, g, b) {
var ri = (255 * r) | 0, gi = (255 * g) | 0, bi = (255 * b) | 0;
return "rgb("+ ri +","+ gi +","+ bi +")";
},
projects / pdf.js.git / commitdiff