DenysMedvid/pdf2htmlEX
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clean js

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This commit is contained in:
Lu Wang 2013-11-07 20:57:28 +08:00
parent 2557c311a6
commit 288b1c1719
1 changed files with 26 additions and 22 deletions
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48
share/pdf2htmlEX.js.in
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@ -147,11 +147,10 @@
/* /*
* scale ratios * scale ratios
* *
* default_r : the first one * original_scale : the first one
* set_r : last set * cur_scale : currently using
* cur_r : currently using
*/ */
this.default_r = this.set_r = this.cur_r = this.original_height / content_box.clientHeight; this.original_scale = this.cur_scale = this.original_height / content_box.clientHeight;
this.page_data = JSON.parse(page.getElementsByClassName(CSS_CLASS_NAMES.page_data)[0].getAttribute('data-data')); this.page_data = JSON.parse(page.getElementsByClassName(CSS_CLASS_NAMES.page_data)[0].getAttribute('data-data'));
this.ctm = this.page_data['ctm']; this.ctm = this.page_data['ctm'];
@ -163,36 +162,37 @@
Page.prototype = { Page.prototype = {
/* hide & show are for contents, the page frame is still there */ /* hide & show are for contents, the page frame is still there */
hide : function(){ hide : function(){
if(this.loaded) { if(this.loaded && this.shown) {
this.content_box.classList.remove('opened'); this.content_box.classList.remove('opened');
this.shown = false; this.shown = false;
} }
}, },
show : function(){ show : function(){
if (this.loaded) { if (this.loaded && !this.shown) {
if (! this.shown) { this.content_box.classList.add('opened');
this.content_box.classList.add('opened'); this.shown = true;
this.shown = true;
}
} }
}, },
rescale : function(ratio) { rescale : function(ratio) {
if(ratio == 0) { if(ratio == 0) {
this.set_r = this.default_r; // reset scale
this.cur_scale = this.original_scale;
} else { } else {
this.set_r = ratio; this.cur_scale = ratio;
} }
if(Math.abs(this.set_r - this.cur_r) > EPS) { // scale the content box
this.cur_r = this.set_r; {
var s = this.content_box.style; var s = this.content_box.style;
s.msTransform = s.webkitTransform = s.transform = 'scale('+this.cur_r.toFixed(3)+')'; s.msTransform = s.webkitTransform = s.transform = 'scale('+this.cur_scale.toFixed(3)+')';
} }
var s = this.p.style; // stretch the page frame to hold the place
s.height = (this.original_height * this.set_r) + 'px'; {
s.width = (this.original_width * this.set_r) + 'px'; var s = this.p.style;
s.height = (this.original_height * this.cur_scale) + 'px';
s.width = (this.original_width * this.cur_scale) + 'px';
}
}, },
/* return if any part of this page is shown in the container */ /* return if any part of this page is shown in the container */
is_visible : function() { is_visible : function() {
@ -203,12 +203,12 @@
/* return if this page or any neighbor of it is visible */ /* return if this page or any neighbor of it is visible */
is_nearly_visible : function() { is_nearly_visible : function() {
var p = this.p; var p = this.p;
var off = this.position(); var pos = this.position();
/* /*
* I should use the height of the previous page or the next page here * I should use the height of the previous page or the next page here
* but since they are not easily available, just use '*2', which should be a good estimate in most cases * but since they are not easily available, just use '*2', which should be a good estimate in most cases
*/ */
return !((off[1] > p.clientHeight * 2) || (off[1] + p.parentNode.clientHeight * 2 < 0)); return !((pos[1] > p.clientHeight * 2) || (pos[1] + p.parentNode.clientHeight * 2 < 0));
}, },
/* /*
* return the coordinate of the top-left corner of container * return the coordinate of the top-left corner of container
@ -448,8 +448,12 @@
var _ = this; var _ = this;
this.render_timer = setTimeout(function () { this.render_timer = setTimeout(function () {
_.render(); /*
* render() may trigger load_page(), which may in turn trigger another render()
* so delete render_timer first
*/
delete _.render_timer; delete _.render_timer;
_.render();
}, this.config['render_timeout']); }, this.config['render_timeout']);
}, },