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Code

some more corrections and cleaning

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This commit is contained in:
Simon Chenard 2014-11-14 14:28:17 -05:00
parent 6fe0262427
commit c9201c6a1d
11 changed files with 30 additions and 959 deletions
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2
pdf2htmlEX.1.in
View File

@ -139,7 +139,7 @@ Whether to show outline in the generated HTML
Whether to show annotation in the generated HTML
.TP
.B \-\-process-forms <0|1> (Default: 0)
.B \-\-process-form <0|1> (Default: 0)
Whether to include text fields and radio buttons in the generated HTML
.TP

3
share/base.css.in
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@ -200,7 +200,4 @@
cursor: pointer;
}
.checked {
background: no-repeat url(data:image/png;base64,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);
}
/* Base CSS END */

3
share/fancy.css.in
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@ -81,5 +81,8 @@
-webkit-animation: swing 1.5s ease-in-out 0.01s infinite alternate none;
animation: swing 1.5s ease-in-out 0.01s infinite alternate none;
}
.@CSS_RADIO_CHECKED_CN@ {
background: no-repeat url(data:image/png;base64,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);
}
}
/* Fancy CSS END */

934
share/pdf2htmlEX.min.js vendored
View File

@ -1,934 +0,0 @@
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab filetype=javascript : */
/**
* @license pdf2htmlEX.js: Core UI functions for pdf2htmlEX
* Copyright 2012,2013 Lu Wang <coolwanglu@gmail.com> and other contributors
* https://github.com/coolwanglu/pdf2htmlEX/blob/master/share/LICENSE
*/
/*
* Attention:
* This files is to be optimized by closure-compiler,
* so pay attention to the forms of property names:
*
* string/bracket form is safe, won't be optimized:
* var obj={ 'a':'b' }; obj['a'] = 'b';
* name/dot form will be optimized, the name is likely to be modified:
* var obj={ a:'b' }; obj.a = 'b';
*
* Either form can be used for internal objects,
* but must be consistent for each one respectively.
*
* string/bracket form must be used for external objects
* e.g. DEFAULT_CONFIG, object stored in page-data
* property names are part of the `protocol` in these cases.
*
*/
'use strict';
var pdf2htmlEX = window['pdf2htmlEX'] = window['pdf2htmlEX'] || {};
/**
* @const
* @struct
*/
var CSS_CLASS_NAMES = {
page_frame : 'pf',
page_content_box : 'pc',
page_data : 'pi',
background_image : 'bi',
link : 'l',
__dummy__ : 'no comma'
};
/**
* configurations of Viewer
* @const
* @dict
*/
var DEFAULT_CONFIG = {
// id of the element to put the pages in
'container_id' : 'page-container',
// id of the element for sidebar (to open and close)
'sidebar_id' : 'sidebar',
// id of the element for outline
'outline_id' : 'outline',
// class for the loading indicator
'loading_indicator_cls' : 'loading-indicator',
// How many page shall we preload that are below the last visible page
'preload_pages' : 3,
// how many ms should we wait before actually rendering the pages and after a scroll event
'render_timeout' : 100,
// zoom ratio step for each zoom in/out event
'scale_step' : 0.9,
// register global key handler
'key_handler' : true,
// register hashchange handler
'hashchange_handler' : true,
'__dummy__' : 'no comma'
};
/** @const */
var EPS = 1e-6;
/************************************/
/* utility function */
/**
* @param{Array.<number>} ctm
*/
function invert(ctm) {
var det = ctm[0] * ctm[3] - ctm[1] * ctm[2];
return [ ctm[3] / det
,-ctm[1] / det
,-ctm[2] / det
,ctm[0] / det
,(ctm[2] * ctm[5] - ctm[3] * ctm[4]) / det
,(ctm[1] * ctm[4] - ctm[0] * ctm[5]) / det
];
};
/**
* @param{Array.<number>} ctm
* @param{Array.<number>} pos
*/
function transform(ctm, pos) {
return [ctm[0] * pos[0] + ctm[2] * pos[1] + ctm[4]
,ctm[1] * pos[0] + ctm[3] * pos[1] + ctm[5]];
};
/**
* @param{Element} ele
*/
function get_page_number(ele) {
return parseInt(ele.getAttribute('data-page-no'), 16);
};
/**
* @param{NodeList} eles
*/
function disable_dragstart(eles) {
for (var i = 0, l = eles.length; i < l; ++i) {
eles[i].addEventListener('dragstart', function() {
return false;
}, false);
}
};
/**
* @param{...Object} var_args
*/
function clone_and_extend_objs(var_args) {
var result_obj = {};
for (var i = 0, l = arguments.length; i < l; ++i) {
var cur_obj = arguments[i];
for (var k in cur_obj) {
if (cur_obj.hasOwnProperty(k)) {
result_obj[k] = cur_obj[k];
}
}
}
return result_obj;
};
/**
* @constructor
* @param{Element} page The element for the page
*/
function Page(page) {
if (!page) return;
this.loaded = false;
this.shown = false;
this.page = page; // page frame element
this.num = get_page_number(page);
// page size
// Need to make rescale work when page_content_box is not loaded, yet
this.original_height = page.clientHeight;
this.original_width = page.clientWidth;
// content box
var content_box = page.getElementsByClassName(CSS_CLASS_NAMES.page_content_box)[0];
// if page is loaded
if (content_box) {
this.content_box = content_box;
/*
* scale ratios
*
* original_scale : the first one
* cur_scale : currently using
*/
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.ctm = this.page_data['ctm'];
this.ictm = invert(this.ctm);
this.loaded = true;
}
};
Page.prototype = {
/* hide & show are for contents, the page frame is still there */
hide : function(){
if (this.loaded && this.shown) {
this.content_box.classList.remove('opened');
this.shown = false;
}
},
show : function(){
if (this.loaded && !this.shown) {
this.content_box.classList.add('opened');
this.shown = true;
}
},
/**
* @param{number} ratio
*/
rescale : function(ratio) {
if (ratio === 0) {
// reset scale
this.cur_scale = this.original_scale;
} else {
this.cur_scale = ratio;
}
// scale the content box
if (this.loaded) {
var cbs = this.content_box.style;
cbs.msTransform = cbs.webkitTransform = cbs.transform = 'scale('+this.cur_scale.toFixed(3)+')';
}
// stretch the page frame to hold the place
{
var ps = this.page.style;
ps.height = (this.original_height * this.cur_scale) + 'px';
ps.width = (this.original_width * this.cur_scale) + 'px';
}
},
/*
* return the coordinate of the top-left corner of container
* in our coordinate system
* assuming that p.parentNode === p.offsetParent
*/
view_position : function () {
var p = this.page;
var c = p.parentNode;
return [c.scrollLeft - p.offsetLeft - p.clientLeft
,c.scrollTop - p.offsetTop - p.clientTop];
},
height : function () {
return this.page.clientHeight;
},
width : function () {
return this.page.clientWidth;
}
};
/**
* @constructor
* @param{Object=} config
*/
function Viewer(config) {
this.config = clone_and_extend_objs(DEFAULT_CONFIG, (arguments.length > 0 ? config : {}));
this.pages_loading = [];
this.init_before_loading_content();
var self = this;
document.addEventListener('DOMContentLoaded', function(){
self.init_after_loading_content();
}, false);
};
Viewer.prototype = {
scale : 1,
/*
* index of the active page (the one with largest visible area)
* which estimates the page currently being viewed
*/
cur_page_idx : 0,
/*
* index of the first visible page
* used when determining current view
*/
first_page_idx : 0,
init_before_loading_content : function() {
/* hide all pages before loading, will reveal only visible ones later */
this.pre_hide_pages();
},
initialize_radio_button : function() {
var elements = document.getElementsByClassName('ir');
for(var i = 0; i < elements.length; i++) {
var r = elements[i];
r.addEventListener('click', function() {
if(this.className.search("checked") == -1)
this.className += " checked";
else
this.className = "ir";
});
}
},
init_after_loading_content : function() {
this.initialize_radio_button();
this.sidebar = document.getElementById(this.config['sidebar_id']);
this.outline = document.getElementById(this.config['outline_id']);
this.container = document.getElementById(this.config['container_id']);
this.loading_indicator = document.getElementsByClassName(this.config['loading_indicator_cls'])[0];
{
// Open the outline if nonempty
var empty = true;
var nodes = this.outline.childNodes;
for (var i = 0, l = nodes.length; i < l; ++i) {
var cur_node = nodes[i];
if (cur_node.nodeName.toLowerCase() === 'ul') {
empty = false;
break;
}
}
if (!empty)
this.sidebar.classList.add('opened');
}
this.find_pages();
// do nothing if there's nothing
if(this.pages.length == 0) return;
// disable dragging of background images
disable_dragstart(document.getElementsByClassName(CSS_CLASS_NAMES.background_image));
if (this.config['key_handler'])
this.register_key_handler();
var self = this;
if (this.config['hashchange_handler']) {
window.addEventListener('hashchange', function(e) {
self.navigate_to_dest(document.location.hash.substring(1));
}, false);
}
// register schedule rendering
// renew old schedules since scroll() may be called frequently
this.container.addEventListener('scroll', function() {
self.update_page_idx();
self.schedule_render(true);
}, false);
// handle links
[this.container, this.outline].forEach(function(ele) {
ele.addEventListener('click', self.link_handler.bind(self), false);
});
this.render();
},
/*
* set up this.pages and this.page_map
* pages is an array holding all the Page objects
* page-Map maps an original page number (in PDF) to the corresponding index in page
*/
find_pages : function() {
var new_pages = [];
var new_page_map = {};
var nodes = this.container.childNodes;
for (var i = 0, l = nodes.length; i < l; ++i) {
var cur_node = nodes[i];
if ((cur_node.nodeType === Node.ELEMENT_NODE)
&& cur_node.classList.contains(CSS_CLASS_NAMES.page_frame)) {
var p = new Page(cur_node);
new_pages.push(p);
new_page_map[p.num] = new_pages.length - 1;
}
}
this.pages = new_pages;
this.page_map = new_page_map;
},
/**
* @param{number} idx
* @param{number=} pages_to_preload
* @param{function(Page)=} callback
*
* TODO: remove callback -> promise ?
*/
load_page : function(idx, pages_to_preload, callback) {
var pages = this.pages;
if (idx >= pages.length)
return; // Page does not exist
var cur_page = pages[idx];
if (cur_page.loaded)
return; // Page is loaded
if (this.pages_loading[idx])
return; // Page is already loading
var cur_page_ele = cur_page.page;
var url = cur_page_ele.getAttribute('data-page-url');
if (url) {
this.pages_loading[idx] = true; // set semaphore
// add a copy of the loading indicator
var new_loading_indicator = this.loading_indicator.cloneNode();
new_loading_indicator.classList.add('active');
cur_page_ele.appendChild(new_loading_indicator);
// load data
{
var self = this;
var _idx = idx;
var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);
xhr.onload = function(){
if (xhr.status === 200 || xhr.status === 0) {
// find the page element in the data
var div = document.createElement('div');
div.innerHTML = xhr.responseText;
var new_page = null;
var nodes = div.childNodes;
for (var i = 0, l = nodes.length; i < l; ++i) {
var cur_node = nodes[i];
if ((cur_node.nodeType === Node.ELEMENT_NODE)
&& cur_node.classList.contains(CSS_CLASS_NAMES.page_frame)) {
new_page = cur_node;
break;
}
}
// replace the old page with loaded data
// the loading indicator on this page should also be destroyed
var p = self.pages[_idx];
self.container.replaceChild(new_page, p.page);
p = new Page(new_page);
self.pages[_idx] = p;
p.hide();
p.rescale(self.scale);
// disable background image dragging
disable_dragstart(new_page.getElementsByClassName(CSS_CLASS_NAMES.background_image));
self.schedule_render(false);
if (callback){ callback(p); }
}
// Reset loading token
delete self.pages_loading[_idx];
};
xhr.send(null);
}
}
// Concurrent prefetch of the next pages
if (pages_to_preload === undefined)
pages_to_preload = this.config['preload_pages'];
if (--pages_to_preload > 0) {
var self = this;
setTimeout(function() {
self.load_page(idx+1, pages_to_preload);
},0);
}
},
/*
* Hide all pages that have no 'opened' class
* The 'opened' class will be added to visible pages by JavaScript
* We cannot add this in the default CSS because JavaScript may be disabled
*/
pre_hide_pages : function() {
/* pages might have not been loaded yet, so add a CSS rule */
var s = '@media screen{.'+CSS_CLASS_NAMES.page_content_box+'{display:none;}}';
var n = document.createElement('style');
if (n.styleSheet) {
n.styleSheet.cssText = s;
} else {
n.appendChild(document.createTextNode(s));
}
document.head.appendChild(n);
},
/*
* show visible pages and hide invisible pages
*/
render : function () {
var container = this.container;
/*
* show the pages that are 'nearly' visible -- it's right above or below the container
*
* all the y values are in the all-page element's coordinate system
*/
var container_min_y = container.scrollTop;
var container_height = container.clientHeight;
var container_max_y = container_min_y + container_height;
var visible_min_y = container_min_y - container_height;
var visible_max_y = container_max_y + container_height;
var cur_page_fully_visible = false;
var cur_page_idx = this.cur_page_idx;
var max_visible_page_idx = cur_page_idx;
var max_visible_ratio = 0.0;
var pl = this.pages;
for (var i = 0, l = pl.length; i < l; ++i) {
var cur_page = pl[i];
var cur_page_ele = cur_page.page;
var page_min_y = cur_page_ele.offsetTop + cur_page_ele.clientTop;
var page_height = cur_page_ele.clientHeight;
var page_max_y = page_min_y + page_height;
if ((page_min_y <= visible_max_y) && (page_max_y >= visible_min_y))
{
// cur_page is 'nearly' visible, show it or load it
if (cur_page.loaded) {
cur_page.show();
} else {
this.load_page(i);
}
} else {
cur_page.hide();
}
}
},
/*
* update cur_page_idx and first_page_idx
* normally called upon scrolling
*/
update_page_idx: function () {
var pages = this.pages;
var pages_len = pages.length;
// there is no chance that cur_page_idx or first_page_idx is modified
if (pages_len < 2) return;
var container = this.container;
var container_min_y = container.scrollTop;
var container_max_y = container_min_y + container.clientHeight;
// binary search for the first page
// whose bottom border is below the top border of the container
var first_idx = -1;
var last_idx = pages_len;
var rest_len = last_idx - first_idx;
// TODO: use current first_page_idx as a hint?
while(rest_len > 1) {
var idx = first_idx + Math.floor(rest_len / 2);
var cur_page_ele = pages[idx].page;
if (cur_page_ele.offsetTop + cur_page_ele.clientTop + cur_page_ele.clientHeight >= container_min_y) {
last_idx = idx;
} else {
first_idx = idx;
}
rest_len = last_idx - first_idx;
}
/*
* with malformed settings it is possible that no page is visible, e.g.
* - the container is to thin, which lies in the margin between two pages
* - all pages are completely above or below the container
* but we just assume that they won't happen.
*/
this.first_page_idx = last_idx;
// find the page with largest visible area
var cur_page_idx = this.cur_page_idx;
var max_visible_page_idx = cur_page_idx;
var max_visible_ratio = 0.0;
for(var i = last_idx; i < pages_len; ++i) {
var cur_page_ele = pages[i].page;
var page_min_y = cur_page_ele.offsetTop + cur_page_ele.clientTop;
var page_height = cur_page_ele.clientHeight;
var page_max_y = page_min_y + page_height;
if (page_min_y > container_max_y) break;
// check the visible fraction of the page
var page_visible_ratio = ( Math.min(container_max_y, page_max_y)
- Math.max(container_min_y, page_min_y)
) / page_height;
// stay with the current page if it is still fully visible
if ((i === cur_page_idx) && (Math.abs(page_visible_ratio - 1.0) <= EPS)) {
max_visible_page_idx = cur_page_idx;
break;
}
if (page_visible_ratio > max_visible_ratio) {
max_visible_ratio = page_visible_ratio;
max_visible_page_idx = i;
}
}
this.cur_page_idx = max_visible_page_idx;
},
/**
* @param{boolean} renew renew the existing schedule instead of using the old one
*/
schedule_render : function(renew) {
if (this.render_timer !== undefined) {
if (!renew) return;
clearTimeout(this.render_timer);
}
var self = this;
this.render_timer = setTimeout(function () {
/*
* render() may trigger load_page(), which may in turn trigger another render()
* so delete render_timer first
*/
delete self.render_timer;
self.render();
}, this.config['render_timeout']);
},
/*
* Handling key events, zooming, scrolling etc.
*/
register_key_handler: function () {
/*
* When user try to zoom in/out using ctrl + +/- or mouse wheel
* handle this and prevent the default behaviours
*
* Code credit to PDF.js
*/
var self = this;
// Firefox specific event, so that we can prevent browser from zooming
window.addEventListener('DOMMouseScroll', function(e) {
if (e.ctrlKey) {
e.preventDefault();
var container = self.container;
var rect = container.getBoundingClientRect();
var fixed_point = [e.clientX - rect['left'] - container.clientLeft
,e.clientY - rect['top'] - container.clientTop];
self.rescale(Math.pow(self.config['scale_step'], e.detail), true, fixed_point);
}
}, false);
window.addEventListener('keydown', function(e) {
var handled = false;
/*
var cmd = (e.ctrlKey ? 1 : 0)
| (e.altKey ? 2 : 0)
| (e.shiftKey ? 4 : 0)
| (e.metaKey ? 8 : 0)
;
*/
var with_ctrl = e.ctrlKey || e.metaKey;
var with_alt = e.altKey;
switch (e.keyCode) {
case 61: // FF/Mac '='
case 107: // FF '+' and '='
case 187: // Chrome '+'
if (with_ctrl){
self.rescale(1.0 / self.config['scale_step'], true);
handled = true;
}
break;
case 173: // FF/Mac '-'
case 109: // FF '-'
case 189: // Chrome '-'
if (with_ctrl){
self.rescale(self.config['scale_step'], true);
handled = true;
}
break;
case 48: // '0'
if (with_ctrl){
self.rescale(0, false);
handled = true;
}
break;
case 33: // Page UP:
if (with_alt) { // alt-pageup -> scroll one page up
self.scroll_to(self.cur_page_idx - 1);
} else { // pageup -> scroll one screen up
self.container.scrollTop -= self.container.clientHeight;
}
handled = true;
break;
case 34: // Page DOWN
if (with_alt) { // alt-pagedown -> scroll one page down
self.scroll_to(self.cur_page_idx + 1);
} else { // pagedown -> scroll one screen down
self.container.scrollTop += self.container.clientHeight;
}
handled = true;
break;
case 35: // End
self.container.scrollTop = self.container.scrollHeight;
handled = true;
break;
case 36: // Home
self.container.scrollTop = 0;
handled = true;
break;
}
if (handled) {
e.preventDefault();
return;
}
}, false);
},
/**
* @param{number} ratio
* @param{boolean} is_relative
* @param{Array.<number>=} fixed_point preserve the position (relative to the top-left corner of the viewer) after rescaling
*/
rescale : function (ratio, is_relative, fixed_point) {
var old_scale = this.scale;
var new_scale = old_scale;
// set new scale
if (ratio === 0) {
new_scale = 1;
is_relative = false;
} else if (is_relative)
new_scale *= ratio;
else
new_scale = ratio;
this.scale = new_scale;
if (!fixed_point)
fixed_point = [0,0];
// translate fixed_point to the coordinate system of all pages
var container = this.container;
fixed_point[0] += container.scrollLeft;
fixed_point[1] += container.scrollTop;
// find the visible page that contains the fixed point
// if the fixed point lies between two pages (including their borders), it's contained in the first one
var pl = this.pages;
var pl_len = pl.length;
for (var i = this.first_page_idx; i < pl_len; ++i) {
var p = pl[i].page;
if (p.offsetTop + p.clientTop >= fixed_point[1])
break;
}
var fixed_point_page_idx = i - 1;
// determine the new scroll position
// each-value consists of two parts, one inside the page, which is affected by rescaling,
// the other is outside, (e.g. borders and margins), which is not affected
// if the fixed_point is above the first page, use the first page as the reference
if (fixed_point_page_idx < 0)
fixed_point_page_idx = 0;
var fp_p = pl[fixed_point_page_idx].page;
var fp_p_width = fp_p.clientWidth;
var fp_p_height = fp_p.clientHeight;
var fp_x_ref = fp_p.offsetLeft + fp_p.clientLeft;
var fp_x_inside = fixed_point[0] - fp_x_ref;
if (fp_x_inside < 0)
fp_x_inside = 0;
else if (fp_x_inside > fp_p_width)
fp_x_inside = fp_p_width;
var fp_y_ref = fp_p.offsetTop + fp_p.clientTop;
var fp_y_inside = fixed_point[1] - fp_y_ref;
if (fp_y_inside < 0)
fp_y_inside = 0;
else if (fp_y_inside > fp_p_height)
fp_y_inside = fp_p_height;
// Rescale pages
for (var i = 0; i < pl_len; ++i)
pl[i].rescale(new_scale);
// Correct container scroll to keep view aligned while zooming
container.scrollLeft += fp_x_inside / old_scale * new_scale + fp_p.offsetLeft + fp_p.clientLeft - fp_x_inside - fp_x_ref;
container.scrollTop += fp_y_inside / old_scale * new_scale + fp_p.offsetTop + fp_p.clientTop - fp_y_inside - fp_y_ref;
// some pages' visibility may be toggled, wait for next render()
// renew old schedules since rescale() may be called frequently
this.schedule_render(true);
},
fit_width : function () {
var page_idx = this.cur_page_idx;
this.rescale(this.container.clientWidth / this.pages[page_idx].width(), false);
this.scroll_to(page_idx);
},
fit_height : function () {
var page_idx = this.cur_page_idx;
this.rescale(this.container.clientHeight / this.pages[page_idx].height(), false);
this.scroll_to(page_idx);
},
/**
* @param{Node} ele
*/
get_containing_page : function(ele) {
/* get the page obj containing obj */
while(ele) {
if ((ele.nodeType === Node.ELEMENT_NODE)
&& ele.classList.contains(CSS_CLASS_NAMES.page_frame)) {
/*
* Get original page number and map it to index of pages
* TODO: store the index on the dom element
*/
var pn = get_page_number(/** @type{Element} */(ele));
var pm = this.page_map;
return (pn in pm) ? this.pages[pm[pn]] : null;
}
ele = ele.parentNode;
}
return null;
},
/**
* @param{Event} e
*/
link_handler : function (e) {
var target = /** @type{Node} */(e.target);
var detail_str = /** @type{string} */ (target.getAttribute('data-dest-detail'));
if (!detail_str) return;
this.navigate_to_dest(detail_str, this.get_containing_page(target));
e.preventDefault();
},
/**
* @param{string} detail_str may come from user provided hashtag, need sanitzing
* @param{Page=} src_page page containing the source event (e.g. link)
*/
navigate_to_dest : function(detail_str, src_page) {
try {
var detail = JSON.parse(detail_str);
} catch(e) {
return;
}
if(!(detail instanceof Array)) return;
var target_page_no = detail[0];
var page_map = this.page_map;
if (!(target_page_no in page_map)) return;
var target_page_idx = page_map[target_page_no];
var target_page = this.pages[target_page_idx];
for (var i = 2, l = detail.length; i < l; ++i) {
var d = detail[i];
if(!((d === null) || (typeof d === 'number')))
return;
}
while(detail.length < 6)
detail.push(null);
// cur_page might be undefined, e.g. from Outline
var cur_page = src_page || this.pages[this.cur_page_idx];
var cur_pos = cur_page.view_position();
cur_pos = transform(cur_page.ictm, [cur_pos[0], cur_page.height()-cur_pos[1]]);
var zoom = this.scale;
var pos = [0,0];
var upside_down = true;
var ok = false;
// position specified in `detail` are in the raw coordinate system of the page (unscaled)
var scale = this.scale;
// TODO: fitb*
// TODO: BBox
switch(detail[1]) {
case 'XYZ':
pos = [ (detail[2] === null) ? cur_pos[0] : detail[2] * scale
, (detail[3] === null) ? cur_pos[1] : detail[3] * scale ];
zoom = detail[4];
if ((zoom === null) || (zoom === 0))
zoom = this.scale;
ok = true;
break;
case 'Fit':
case 'FitB':
pos = [0,0];
ok = true;
break;
case 'FitH':
case 'FitBH':
pos = [0, (detail[2] === null) ? cur_pos[1] : detail[2] * scale];
ok = true;
break;
case 'FitV':
case 'FitBV':
pos = [(detail[2] === null) ? cur_pos[0] : detail[2] * scale, 0];
ok = true;
break;
case 'FitR':
/* locate the top-left corner of the rectangle */
// TODO
pos = [detail[2] * scale, detail[5] * scale];
upside_down = false;
ok = true;
break;
default:
break;
}
if (!ok) return;
this.rescale(zoom, false);
var self = this;
/**
* page should of type Page
* @param{Page} page
*/
var transform_and_scroll = function(page) {
pos = transform(page.ctm, pos);
if (upside_down) {
pos[1] = page.height() - pos[1];
}
self.scroll_to(target_page_idx, pos);
};
if (target_page.loaded) {
transform_and_scroll(target_page);
} else {
// TODO: scroll_to may finish before load_page
// Scroll to the exact position once loaded.
this.load_page(target_page_idx, undefined, transform_and_scroll);
// In the meantime page gets loaded, scroll approximately position for maximum responsiveness.
this.scroll_to(target_page_idx);
}
},
/**
* @param{number} page_idx
* @param{Array.<number>=} pos [x,y] where (0,0) is the top-left corner
*/
scroll_to : function(page_idx, pos) {
var pl = this.pages;
if ((page_idx < 0) || (page_idx >= pl.length)) return;
var target_page = pl[page_idx];
var cur_target_pos = target_page.view_position();
if (pos === undefined)
pos = [0,0];
var container = this.container;
container.scrollLeft += pos[0] - cur_target_pos[0];
container.scrollTop += pos[1] - cur_target_pos[1];
}
};
// export pdf2htmlEX.Viewer
pdf2htmlEX['Viewer'] = Viewer;

2
src/HTMLRenderer/HTMLRenderer.h
View File

@ -169,7 +169,7 @@ protected:
void process_outline(void);
void process_outline_items(GooList * items);
void process_form(std::ostream & out);
void process_form(std::ofstream & out);
void set_stream_flags (std::ostream & out);

37
src/HTMLRenderer/form.cc
View File

@ -17,10 +17,10 @@
namespace pdf2htmlEX {
using std::ostream;
using std::ofstream;
using std::cerr;
void HTMLRenderer::process_form(ostream & out)
void HTMLRenderer::process_form(ofstream & out)
{
FormPageWidgets * widgets = cur_catalog->getPage(pageNum)->getFormWidgets();
int num = widgets->getNumWidgets();
@ -28,8 +28,8 @@ void HTMLRenderer::process_form(ostream & out)
for(int i = 0; i < num; i++)
{
FormWidget * w = widgets->getWidget(i);
double x1, y1, x2, y2;
int width, height, font_size;
double x1, y1, x2, y2, width, font_size;
int height;
w->getRect(&x1, &y1, &x2, &y2);
x1 = x1 * param.zoom;
@ -44,13 +44,15 @@ void HTMLRenderer::process_form(ostream & out)
{
font_size = height / 2;
out << "<input id=\"text-" << std::to_string(pageNum) << "-"
<< std::to_string(i) << "\" type=\"text\" value=\"\""
<< " style=\"position: absolute; left: " << std::to_string(x1) <<
"px; bottom: " << std::to_string(y1) << "px;" <<
"width: " << std::to_string(width) << "px; height: " << std::to_string(height) <<
"px; line-height: " << std::to_string(height) << "px; font-size: "
<< std::to_string(font_size) << "px;\" class=\"" << CSS::INPUT_TEXT_CN << "\" />" << endl;
out
<< "<input id=\"text-" << pageNum << "-"
<< i << "\" type=\"text\" value=\"\""
<< " style=\"position: absolute; left: " << x1
<< "px; bottom: " << y1 << "px;"
<< " width: " << width << "px; height: " << std::to_string(height)
<< "px; line-height: " << std::to_string(height) << "px; font-size: "
<< font_size << "px;\" class=\""
<< CSS::INPUT_TEXT_CN << "\" />" << endl;
}
if(w->getType() == formButton)
@ -58,12 +60,13 @@ void HTMLRenderer::process_form(ostream & out)
width += 3;
height += 3;
out << "<div id=\"cb-" << std::to_string(pageNum) << "-"
<< std::to_string(i) << "\""
<< " style=\"position: absolute; left: " << std::to_string(x1) <<
"px; bottom: " << std::to_string(y1) << "px;" <<
"width: " << std::to_string(width) << "px; height: " << std::to_string(height) <<
"px; \" class=\"" << CSS::INPUT_RADIO_CN << "\"></div>" << endl;
out
<< "<div id=\"cb-" << pageNum << "-" << i << "\""
<< " style=\"position: absolute; left: " << x1
<< "px; bottom: " << y1 << "px;"
<< " width: " << width << "px; height: "
<< std::to_string(height) << "px; \" class=\""
<< CSS::INPUT_RADIO_CN << "\"></div>" << endl;
}
}

2
src/HTMLRenderer/general.cc
View File

@ -253,7 +253,7 @@ void HTMLRenderer::endPage() {
html_text_page.clear();
// process form
if(param.process_forms)
if(param.process_form)
process_form(*f_curpage);
// process links before the page is closed

2
src/Param.h
View File

@ -38,7 +38,7 @@ struct Param
int process_nontext;
int process_outline;
int process_annotation;
int process_forms;
int process_form;
int correct_text_visibility;
int printing;
int fallback;

1
src/css_class_names.cmakelists.txt
View File

@ -36,3 +36,4 @@ set(CSS_CSS_DRAW_CN "d") # Draw
set(CSS_LINK_CN "l") # Link
set(CSS_INPUT_TEXT_CN "it") # Text input
set(CSS_INPUT_RADIO_CN "ir") # Radio button
set(CSS_RADIO_CHECKED_CN "checked") # Show picture of checked out radio button

2
src/pdf2htmlEX.cc
View File

@ -164,7 +164,7 @@ void parse_options (int argc, char **argv)
.add("process-nontext", &param.process_nontext, 1, "render graphics in addition to text")
.add("process-outline", &param.process_outline, 1, "show outline in HTML")
.add("process-annotation", &param.process_annotation, 0, "show annotation in HTML")
.add("process-forms", &param.process_forms, 0, "include text fields and radio buttons")
.add("process-form", &param.process_form, 0, "include text fields and radio buttons")
.add("printing", &param.printing, 1, "enable printing support")
.add("fallback", &param.fallback, 0, "output in fallback mode")
.add("tmp-file-size-limit", &param.tmp_file_size_limit, -1, "Maximum size (in KB) used by temporary files, -1 for no limit.")

1
src/util/css_const.h.in
View File

@ -58,6 +58,7 @@ const char * const LINK_CN = "@CSS_LINK_CN@";
const char * const INPUT_TEXT_CN = "@CSS_INPUT_TEXT_CN@";
const char * const INPUT_RADIO_CN = "@CSS_INPUT_RADIO_CN@";
const char * const RADIO_CHECKED_CN = "@CSS_RADIO_CHECKED_CN@";
}
}