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Respect media box

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This commit is contained in:
Chris Jones 2011-05-05 23:46:54 -05:00
parent 68f1ca51ce
commit 7827e91566
2 changed files with 38 additions and 16 deletions
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32
pdf.js
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@ -760,8 +760,10 @@ var Interpreter = (function() {
interpret: function(obj) {
return this.interpretHelper(new Parser(new Lexer(obj), true));
},
interpretHelper: function(parser) {
this.gfx.beginDrawing();
interpretHelper: function(mediaBox, parser) {
this.gfx.beginDrawing({ x: mediaBox[0], y: mediaBox[1],
width: mediaBox[2] - mediaBox[0],
height: mediaBox[3] - mediaBox[1] });
var args = [ ];
var obj;
@ -810,9 +812,12 @@ var EchoGraphics = (function() {
}
constructor.prototype = {
beginDrawing: function () {
beginDrawing: function(mediaBox) {
this.printdentln("/MediaBox ["+
mediaBox.x +" "+ mediaBox.y +" "+
mediaBox.width +" "+ mediaBox.height +" ]");
},
endDrawing: function () {
endDrawing: function() {
},
// Graphics state
@ -950,10 +955,11 @@ var CanvasGraphics = (function() {
}
constructor.prototype = {
beginDrawing: function () {
beginDrawing: function(mediaBox) {
var cw = this.ctx.canvas.width, ch = this.ctx.canvas.height;
this.ctx.save();
this.ctx.scale(1, -1);
this.ctx.translate(0, -this.ctx.canvas.height);
this.ctx.scale(cw / mediaBox.width, -ch / mediaBox.height);
this.ctx.translate(0, -mediaBox.height);
},
endDrawing: function () {
this.ctx.restore();
@ -1103,11 +1109,12 @@ var tests = [
F1: { Type: "Font",
Subtype: "Type1",
Name: "F1",
BaseFont: "Georgia",
BaseFont: "Helvetica",
Encoding: "MacRomanEncoding"
},
}
},
mediaBox: [ 0, 0, 612, 792 ],
objs: [
cmd("BT"),
name("F1"), int(24), cmd("Tf"),
@ -1115,10 +1122,11 @@ var tests = [
string("Hello World"), cmd("Tj"),
cmd("ET"),
eof()
]
]
},
{ name: "Simple graphics",
res: { },
mediaBox: [ 0, 0, 612, 792 ],
objs: [
int(150), int(250), cmd("m"),
int(150), int(350), cmd("l"),
@ -1147,6 +1155,7 @@ var tests = [
},
{ name: "Heart",
res: { },
mediaBox: [ 0, 0, 612, 792 ],
objs: [
cmd("q"),
real(0.9), real(0.0), real(0.0), cmd("rg"),
@ -1164,6 +1173,7 @@ var tests = [
},
{ name: "Rectangle",
res: { },
mediaBox: [ 0, 0, 612, 792 ],
objs: [
int(1), int(0), int(0), int(1), int(80), int(80), cmd("cm"),
int(0), int(72), cmd("m"),
@ -1173,7 +1183,7 @@ var tests = [
int(4), cmd("w"),
cmd("h"), cmd("S"),
eof()
]
]
},
];
@ -1185,7 +1195,7 @@ function runEchoTests() {
var output = "";
var gfx = new EchoGraphics(output);
var i = new Interpreter(null, test.res, null, gfx);
i.interpretHelper(new MockParser(test.objs));
i.interpretHelper(test.mediaBox, new MockParser(test.objs));
print("done. Output:");
print(gfx.out);