mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-22 16:18:08 +02:00
Code Activity

Changes to viewer to support progressive loading

Browse source
This commit is contained in:
Mack Duan 2013-03-08 18:08:37 -08:00
parent 921f3211a4
commit 4782a3acb9
3 changed files with 217 additions and 83 deletions
Download patch file Download diff file Expand all files Collapse all files

19
src/util.js
View file

@ -362,13 +362,19 @@ var Util = PDFJS.Util = (function UtilClosure() {
})();
var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() {
function PageViewport(viewBox, scale, rotate, offsetX, offsetY) {
function PageViewport(viewBox, scale, rotation, offsetX, offsetY) {
this.viewBox = viewBox;
this.scale = scale;
this.rotation = rotation;
this.offsetX = offsetX;
this.offsetY = offsetY;
// creating transform to convert pdf coordinate system to the normal
// canvas like coordinates taking in account scale and rotation
var centerX = (viewBox[2] + viewBox[0]) / 2;
var centerY = (viewBox[3] + viewBox[1]) / 2;
var rotateA, rotateB, rotateC, rotateD;
switch (rotate % 360) {
switch (rotation % 360) {
case -180:
case 180:
rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1;
@ -412,13 +418,18 @@ var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() {
offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY
];
this.offsetX = offsetX;
this.offsetY = offsetY;
this.width = width;
this.height = height;
this.fontScale = scale;
}
PageViewport.prototype = {
clone: function PageViewPort_clone(args) {
args = args || {};
var scale = 'scale' in args ? args.scale : this.scale;
var rotation = 'rotation' in args ? args.rotation : this.rotation;
return new PageViewport(this.viewBox.slice(), scale, rotation,
this.offsetX, this.offsetY);
},
convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) {
return Util.applyTransform([x, y], this.transform);
},