htmlbuilder¶
This module is responsible for generating the HTML for maindisplay. The build_html function
is the function which has to be called from outside. The generated and returned HTML will look similar to this:
<!DOCTYPE html>
<html>
<head>
<title>OpenLP Display</title>
<style>
*{
margin: 0;
padding: 0;
border: 0;
overflow: hidden;
-webkit-user-select: none;
}
body {
background-color: #000000;
}
.size {
position: absolute;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
}
#black {
z-index: 8;
background-color: black;
display: none;
}
#bgimage {
z-index: 1;
}
#image {
z-index: 2;
}
#videobackboard {
z-index:3;
background-color: #000000;
}
#video {
background-color: #000000;
z-index:4;
}
#flash {
z-index:5;
}
#alert {
position: absolute;
left: 0px;
top: 0px;
z-index: 10;
width: 100%;
vertical-align: bottom;
font-family: DejaVu Sans;
font-size: 40pt;
color: #ffffff;
background-color: #660000;
word-wrap: break-word;
}
#footer {
position: absolute;
z-index: 6;
left: 10px;
bottom: 0px;
width: 1580px;
font-family: Nimbus Sans L;
font-size: 12pt;
color: #FFFFFF;
text-align: left;
white-space: nowrap;
}
/* lyric css */
.lyricstable {
z-index: 5;
position: absolute;
display: table;
left: 10px; top: 0px;
}
.lyricscell {
display: table-cell;
word-wrap: break-word;
-webkit-transition: opacity 0.4s ease;
white-space:pre-wrap; word-wrap: break-word; text-align: left; vertical-align: top; font-family: Nimbus
Sans L; font-size: 40pt; color: #FFFFFF; line-height: 100%; margin: 0;padding: 0; padding-bottom: 0;
padding-left: 4px; width: 1580px; height: 810px;
}
.lyricsmain {
-webkit-text-stroke: 0.125em #000000; -webkit-text-fill-color: #FFFFFF; text-shadow: #000000 5px 5px;
}
sup {
font-size: 0.6em;
vertical-align: top;
position: relative;
top: -0.3em;
}
/* Chords css */
.chordline {
line-height: 1.0em;
}
.chordline span.chord span {
position: relative;
}
.chordline span.chord span strong {
position: absolute;
top: -0.8em;
left: 0;
font-size: 75%;
font-weight: normal;
line-height: normal;
display: none;
}
.firstchordline {
line-height: 1.0em;
}
</style>
<script>
var timer = null;
var transition = false;
function show_video(state, path, volume, loop, variable_value){
// Sometimes video.currentTime stops slightly short of video.duration and video.ended is intermittent!
var video = document.getElementById('video');
if(volume != null){
video.volume = volume;
}
switch(state){
case 'load':
video.src = 'file:///' + path;
if(loop == true) {
video.loop = true;
}
video.load();
break;
case 'play':
video.play();
break;
case 'pause':
video.pause();
break;
case 'stop':
show_video('pause');
video.currentTime = 0;
break;
case 'close':
show_video('stop');
video.src = '';
break;
case 'length':
return video.duration;
case 'current_time':
return video.currentTime;
case 'seek':
video.currentTime = variable_value;
break;
case 'isEnded':
return video.ended;
case 'setVisible':
video.style.visibility = variable_value;
break;
case 'setBackBoard':
var back = document.getElementById('videobackboard');
back.style.visibility = variable_value;
break;
}
}
function getFlashMovieObject(movieName)
{
if (window.document[movieName]){
return window.document[movieName];
}
if (document.embeds && document.embeds[movieName]){
return document.embeds[movieName];
}
}
function show_flash(state, path, volume, variable_value){
var text = document.getElementById('flash');
var flashMovie = getFlashMovieObject("OpenLPFlashMovie");
var src = "src = 'file:///" + path + "'";
var view_parm = " wmode='opaque'" + " width='100%%'" + " height='100%%'";
var swf_parm = " name='OpenLPFlashMovie'" + " autostart='true' loop='false' play='true'" +
" hidden='false' swliveconnect='true' allowscriptaccess='always'" + " volume='" + volume + "'";
switch(state){
case 'load':
text.innerHTML = "<embed " + src + view_parm + swf_parm + "/>";
flashMovie = getFlashMovieObject("OpenLPFlashMovie");
flashMovie.Play();
break;
case 'play':
flashMovie.Play();
break;
case 'pause':
flashMovie.StopPlay();
break;
case 'stop':
flashMovie.StopPlay();
tempHtml = text.innerHTML;
text.innerHTML = '';
text.innerHTML = tempHtml;
break;
case 'close':
flashMovie.StopPlay();
text.innerHTML = '';
break;
case 'length':
return flashMovie.TotalFrames();
case 'current_time':
return flashMovie.CurrentFrame();
case 'seek':
// flashMovie.GotoFrame(variable_value);
break;
case 'isEnded':
//TODO check flash end
return false;
case 'setVisible':
text.style.visibility = variable_value;
break;
}
}
function show_alert(alerttext, position){
var text = document.getElementById('alert');
text.innerHTML = alerttext;
if(alerttext == '') {
text.style.visibility = 'hidden';
return 0;
}
if(position == ''){
position = getComputedStyle(text, '').verticalAlign;
}
switch(position)
{
case 'top':
text.style.top = '0px';
break;
case 'middle':
text.style.top = ((window.innerHeight - text.clientHeight) / 2)
+ 'px';
break;
case 'bottom':
text.style.top = (window.innerHeight - text.clientHeight)
+ 'px';
break;
}
text.style.visibility = 'visible';
return text.clientHeight;
}
function update_css(align, font, size, color, bgcolor){
var text = document.getElementById('alert');
text.style.fontSize = size + "pt";
text.style.fontFamily = font;
text.style.color = color;
text.style.backgroundColor = bgcolor;
switch(align)
{
case 'top':
text.style.top = '0px';
break;
case 'middle':
text.style.top = ((window.innerHeight - text.clientHeight) / 2)
+ 'px';
break;
case 'bottom':
text.style.top = (window.innerHeight - text.clientHeight)
+ 'px';
break;
}
}
function show_image(src){
var img = document.getElementById('image');
img.src = src;
if(src == '')
img.style.display = 'none';
else
img.style.display = 'block';
}
function show_blank(state){
var black = 'none';
var lyrics = '';
switch(state){
case 'theme':
lyrics = 'hidden';
break;
case 'black':
black = 'block';
break;
case 'desktop':
break;
}
document.getElementById('black').style.display = black;
document.getElementById('lyricsmain').style.visibility = lyrics;
document.getElementById('image').style.visibility = lyrics;
document.getElementById('footer').style.visibility = lyrics;
}
function show_footer(footertext){
document.getElementById('footer').innerHTML = footertext;
}
function show_text(new_text){
var match = /-webkit-text-fill-color:[^;"]+/gi;
if(timer != null)
clearTimeout(timer);
/*
QtWebkit bug with outlines and justify causing outline alignment
problems. (Bug 859950) Surround each word with a <span> to workaround,
but only in this scenario.
*/
var txt = document.getElementById('lyricsmain');
if(window.getComputedStyle(txt).textAlign == 'justify'){
if(window.getComputedStyle(txt).webkitTextStrokeWidth != '0px'){
new_text = new_text.replace(/(\s| )+(?![^<]*>)/g,
function(match) {
return '</span>' + match + '<span>';
});
new_text = '<span>' + new_text + '</span>';
}
}
text_fade('lyricsmain', new_text);
}
function text_fade(id, new_text){
/*
Show the text.
*/
var text = document.getElementById(id);
if(text == null) return;
if(!transition){
text.innerHTML = new_text;
return;
}
// Fade text out. 0.1 to minimize the time "nothing" is shown on the screen.
text.style.opacity = '0.1';
// Fade new text in after the old text has finished fading out.
timer = window.setTimeout(function(){_show_text(text, new_text)}, 400);
}
function _show_text(text, new_text) {
/*
Helper function to show the new_text delayed.
*/
text.innerHTML = new_text;
text.style.opacity = '1';
// Wait until the text is completely visible. We want to save the timer id, to be able to call
// clearTimeout(timer) when the text has changed before finishing fading.
timer = window.setTimeout(function(){timer = null;}, 400);
}
function show_text_completed(){
return (timer == null);
}
</script>
</head>
<body>
<img id="bgimage" class="size" style="display:none;" />
<img id="image" class="size" style="display:none;" />
<div id="videobackboard" class="size" style="visibility:hidden"></div>
<video id="video" class="size" style="visibility:hidden" autobuffer preload></video>
<div id="flash" class="size" style="visibility:hidden"></div>
<div id="alert" style="visibility:hidden"></div>
<div class="lyricstable"><div id="lyricsmain" style="opacity:1" class="lyricscell lyricsmain"></div></div>
<div id="footer" class="footer"></div>
<div id="black" class="size"></div>
</body>
</html>
-
openlp.core.lib.htmlbuilder.build_background_css(item, width)[source]¶ Build the background css
Parameters: - item – Service Item containing theme and location information
- width –
Build the display of the item footer
Parameters: - item – Service Item to be processed.
- height –
-
openlp.core.lib.htmlbuilder.build_html(item, screen, is_live, background, image=None, plugins=None)[source]¶ Build the full web paged structure for display
Parameters: - item – Service Item to be displayed
- screen – Current display information
- is_live – Item is going live, rather than preview/theme building
- background – Theme background image - bytes
- image – Image media item - bytes
- plugins – The List of available plugins
-
openlp.core.lib.htmlbuilder.build_lyrics_css(item)[source]¶ Build the lyrics display css
Parameters: item – Service Item containing theme and location information
-
openlp.core.lib.htmlbuilder.build_lyrics_format_css(theme_data, width, height)[source]¶ Build the css which controls the theme format. Also used by renderer for splitting verses
Parameters: - theme_data – Object containing theme information
- width – Width of the lyrics block
- height – Height of the lyrics block