Updating readme, removing obsolete files

README.md

@@ -2,32 +2,43 @@
 
 ![](https://licensebuttons.net/l/by-nc-sa/4.0/88x31.png)
 
-Melpomene is a a simple, easy to integrate webcomic reading utility .
+Melpomene is a a simple, HTML/CSS/JS webcomic reading utility .
 
 It allows people to look through your webcomic like they would in real life : panel by panel. It displays your pages through a series of zooms you defines beforehand.
 
-Melpomene uses SVGs as input to defines the zooms. It allows you to use any SVG editor as a "What You See Is What You Get" editor.
+To avoid writing the zooms informations by hand, Melpomene utility scripts uses SVGs as input to defines the zooms. It allows you to use any SVG editor as a "What You See Is What You Get" editor.
 
-This repository host a small demo you can open in your browser : the [episode 35 of pepper and carrot](https://www.peppercarrot.com/en/webcomic/ep35_The-Reflection.html) (see Credits). You can open `demos/pepper_and_carrot_e35_lowres.html` and `demos/pepper_and_carrot_e35_highres.html` to see Mepomene in action!
+This repository host a small demo you can open in your browser : the [episode 35 of pepper and carrot](https://www.peppercarrot.com/en/webcomic/ep35_The-Reflection.html) (see Credits). You can open the HTML files in the `demos` folder to see Mepomene in action!
 
 Melpomene main repository is [https://git.aribaud.net/caribaud/melpomene](https://git.aribaud.net/caribaud/melpomene)
 
 # How Melpomene works
 
-It works with :
-+ HTML, CSS and Javascript snipets you can put in your web page to add the webcomic reader
-+ A Javascript file describing the various informations required by the reader
-+ A Python script, used to generate the above Javascript configuration file
-
 ```mermaid
 flowchart TB
     page([Your comic pages]) -- use in --> svgedit[SVG editor<br>e.g. Inkscape, etc...] 
     svgedit -- export --> svg([SVGs with<br>zooms defined])
-    svg -- use in --> confgen[Melpomene<br>config generator]
+    svg -- use in --> gen[Melpomene<br>config generator]
-    confgen --> conf([json<br>config])
+    gen -- generate --> html([Melpomene HTML snipet])
-    conf & html([HTML snipet]) & js([JS snipet]) & css([CSS snipet]) -- use / import into --> webpage([Your web page])
+    html -- copy into --> webpage([Your web page])
+    js([melpomene.js]) & css([melpomene.css]) -- include into --> webpage
 ```
 
+Melpomene is mainly one JS file and one CSS file. You only need to include them in you web page. They are :
+    + `melpomene.js`
+    + `melpomene.css`
+
+The JS files expect you to write some very specific HTML tags to be able to work.
+To simplify things, you only need to copy-paste the content of `melpomene.html` into your own page and change a few things :
++ `data-pages-width` must be set to your comic pages width in px
++ `data-pages-height` must be set to your comic pages height in px
++ You must duplicate the `img` tag for each of you comic page and :
+    + set `url` to the actual URL of your page
+    + set `data-zooms` with the zooms information, like so : `<zoom 1 width>, <zoom 1 height>, <zoom 1 x offset>, <zoom 1 y offset>; <zoom 2 width> ...`
+        + example : `<img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P01.jpg" data-zooms="2481.0,1327.1057,0.0,0.0;593.15338,1076.4635,0.0,1364.053;890.72864,491.29874,830.81415,1751.5;2481.0,1078.4192,0.0,1364.053;562.77032,909.44702,102.48115,2491.6567;920.74463,909.44702,698.55927,2491.6567;728.776,909.44702,1652.3695,2491.6567"/>`
+
+Because doing this by hand would be very tedious, Melpomene comes with an helper script that allows generating that HTML for you from SVGs.
+
 ## Limitations
 
 The following limitations are known and will be improved upon :
@@ -53,42 +64,25 @@ To create the zooms for a comic page, what you need to do is :
 3. Once you are done, save the SGV
 
 
-## Generating the configuration files
+## Generating the HTML files
 
 Once the SVG for your pages are done, put them in one folder. Then, you can run the zoom generator.
 
 You need to open a terminal and then run :
-+ `python zooms_generator.py <path to the SVG folder> zooms_data.json` on windows
++ `python zooms_generator.py <path to the SVG folder> html -p <prefix of the img's url> -e <extension of the img's url>`
-+ `python3 zooms_generator.py <path to the SVG folder> zooms_data.json` on linux
+    + For example, if your comic pages are hosted at `static/comic/page_x.jpg`, the svg must be named `page_x.svg`
+    and you must run `python zooms_generator.py <path to the SVG folder> html -p /static/comic/ -e jpg`
+    + It will generate the following `img` tag : `<img loading="lazy" src="static/comic/page_x.jpg" data-zooms="..."/>`
 
 The pages need to be in alphabetical order! It assumes the first page is page 1, the next one is page 2, etc..
 
-The script will then generate the file `zooms_data.json`.
+The script will then generate the file `melpomene_data.html`.
+
+If you wish to run a custom generation process, this generator can output a JSON or a JS file as well, run `python zooms_generator.py -h` for help
 
 You are now ready to integrate Melpomene in your website!
 
 
-## Integrating Melpomene
-
-Let's assume your site is `https://my.website/`.
-
-You now need :
-1. Host the Melpomene Javascript and CSS files in your website, e.g. at `https://my.website/melptomene.js` and `https://my.website/melptomene.css`
-2. Host the zooms data on your website, e.g. at `https://my.website/zooms_data.js`
-2. Include the various parts of the HTML snipets :
-    1. `melpomene_head.html` goes in the `head` tag of your page
-        * You may need to change the `href` values to where you uploaded the CSS file.
-    2. `melpomene_reader.html` goes where you want somewhere within the `body` tag of your page
-        * Change `data-pages-width` and `data-pages-height` with the actual width and height of your pages
-        * Change `https://link.to.my/comic/page.jpg` to the actual URL of your comic pages and duplicate the `img`
-        tag for each of them
-    3. `melpomene_js.html` goes right after the `body` tag of your page.
-        * You may need to change the `href` values to where you uploaded the JS files.
-
-You can now open your page and should see the results.
-
-If you are having troubles, you can open the demo files to see how it was done.
-
 # Credits
 
 Most examples and the documentation of Melpomene uses illustrations from David "Deevad" Revoy's "Pepper & Carrot" webcomic, which is published under CC-BY 4.0. Full licence [here](https://www.peppercarrot.com/en/license/index.html).

demos/demo_data.js

@@ -1,4 +1,4 @@
-zooms = [
+PAGES_ZOOMS = [
     [1, 2481.0, 1327.1057, 0.0, 0.0],
     [1, 593.15338, 1076.4635, 0.0, 1364.053],
     [1, 890.72864, 491.29874, 830.81415, 1751.5],

demos/pepper_and_carrot_e35_highres.html

@@ -11,13 +11,10 @@
 
     <body>
     
-        <!-- melpomene_reader.html import -->
-    
         <!-- Melpomene comic reader -->
         <!-- CC-BY-NC-SA https://git.aribaud.net/caribaud/melpomene/ -->
         <div id="reader-frame">
             <div id="reader-content-frame">
-                
                 <div id="reader-pages" class="animated" data-pages-width="2481" data-pages-height="3503" hidden>
                     <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P01.jpg"/>
                     <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P02.jpg"/>
@@ -32,7 +29,6 @@
                     <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P11.jpg"/>
                     <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P12.jpg"/>
                 </div>
-                
                 <div id="focus-overlay" class="flex-col fill">
                     <div class="grow obscured animated"></div>
                     <div id="focus-overlay-height" class="flex animated" style="height:100%">
@@ -42,12 +38,10 @@
                     </div>
                     <div class="grow obscured animated"></div>
                 </div>
-                
                 <div id="nav-controls" class="fill">
                     <div class="left" id="nav-left" onclick="moveReader(false,false)"></div>
                     <div class="right" id="nav-right" onclick="moveReader(true,false)"></div>
                 </div>
-                
                 <div id="help-menu">
                     <div id="help-controls" style="opacity:1; transform: translate(0,0);">
                         <div><div class="key">&larr;</div>/ scroll up / clic : previous</div>
@@ -58,9 +52,7 @@
                         <div><div class="key">V</div>: Toggle panel / page viewing mode</div>
                     </div>
                 </div>
-            
             </div>
-            
             <div id="reader-progress-container">
                 <div id="reader-progress-bar"></div>
                 <div id="reader-progress-pages"></div>

demos/pepper_and_carrot_e35_highres_htmldata.html

@@ -0,0 +1,69 @@
+<!DOCTYPE html>
+<html>
+
+    <head>
+        <link rel="stylesheet" href="demo.css">
+        
+        <!-- melpomene_head.html import -->
+        <link rel="stylesheet" href="../melpomene.css">
+    
+    </head>
+
+    <body>
+    
+        <!-- Melpomene comic reader -->
+        <!-- CC-BY-NC-SA https://git.aribaud.net/caribaud/melpomene/ -->
+        <div id="reader-frame">
+            <div id="reader-content-frame">
+                <div id="reader-pages" class="animated" data-pages-width="2481" data-pages-height="3503" hidden>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P01.jpg" data-zooms="2481.0,1327.1057,0.0,0.0;593.15338,1076.4635,0.0,1364.053;890.72864,491.29874,830.81415,1751.5;2481.0,1078.4192,0.0,1364.053;562.77032,909.44702,102.48115,2491.6567;920.74463,909.44702,698.55927,2491.6567;728.776,909.44702,1652.3695,2491.6567"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P02.jpg" data-zooms="1459.9161,960.62878,99.857468,103.85177;788.87384,960.62878,1593.7252,103.85177;455.35007,305.56384,389.44412,1376.0359;2282.7415,760.914,99.857475,1114.4093;1069.9728,496.29166,101.85461,1928.2478;1209.7733,496.29166,1172.3267,1928.2478;788.87402,926.67731,101.85462,2474.468;415.40707,926.67731,924.68018,2474.468;1008.5604,926.67731,1372.0416,2474.468"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P03.jpg" data-zooms="2278.4634,1424.0264,103.9937,103.9937;457.3472,589.15906,816.83411,469.33011;618.69055,832.04285,104.47829,1578.7172;1170.7311,832.04285,756.71887,1578.7172;418.14838,832.04285,1962.6545,1578.7172;2280.6614,940.57422,100.82664,2461.1147"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P04.jpg" data-zooms="1128.3893,547.21899,100.85604,101.85461;1125.3937,505.27878,101.85462,700.99945;659.59674,1104.1381,1237.9126,100.46677;474.09705,1104.7645,1908.0801,103.04887;991.58466,641.08496,365.47833,1256.2069;2276.7502,1268.1899,101.85461,1256.2069;669.66565,827.24689,100.95136,2574.8799;1574.1992,825.24969,806.56573,2576.877"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P05.jpg" data-zooms="2270.7588,1348.0758,107.84606,109.84322;828.80096,1879.4762,104.70337,1519.7256;606.50098,1877.479,975.78717,1521.7228;755.02411,1139.5406,1623.401,1521.7228;757.02124,680.4198,1621.4038,2716.7849"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P06.jpg" data-zooms="2273.6387,1248.3829,104.50265,107.32705;624.19147,440.60574,1259.6805,771.06006;830.37231,940.5238,110.15143,1415.0222;1395.2515,1313.3441,985.71411,1409.3734;1321.8173,796.47961,112.97583,2417.6829;974.4165,754.11365,1403.7247,2646.4587"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P07.jpg" data-zooms="828.81702,497.29019,443.36716,531.2417;2275.0127,1188.0789,105.30553,109.78442;2275.0127,804.28339,105.30553,1356.3481;847.87823,1182.9146,105.30553,2210.6436;497.6918,1185.7389,994.37964,2213.468;854.35431,1185.7389,1528.7885,2213.468"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P08.jpg" data-zooms="2272.7561,1228.2468,101.85461,107.84607;497.29019,756.91962,994.58044,569.18756;2276.7502,1052.4977,101.85461,1336.0929;2278.7473,958.63165,101.85462,2444.5107"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P09.jpg" data-zooms="1131.1705,453.31552,101.67825,103.09045;1148.1168,453.31552,1232.8488,103.09045;1481.6407,453.31552,501.89209,103.09045;2282.1118,855.79193,98.853851,604.42072;1776.5449,881.21149,290.91275,1355.71;703.27454,398.23981,762.58685,2863.9373;2270.8142,1132.5826,107.32704,2270.8142"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P10.jpg" data-zooms="2278.7473,1240.2297,101.85461,101.85461;667.04791,1016.549,99.857468,1390.016;1583.7395,1014.5519,798.85974,1390.016;2280.7446,944.65161,99.857468,2456.4937"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P11.jpg" data-zooms="830.81415,1194.2953,97.860321,101.85461;774.89398,1198.2897,960.62885,99.857468;609.13055,1192.2982,1769.4744,101.85461;363.4812,868.75995,99.857468,1348.0758;1495.8649,870.75714,493.2959,1346.0787;357.48975,870.75714,2023.1123,1348.0758;529.24457,499.28735,103.85177,2280.7446;531.24176,687.01941,99.857468,2716.123;1022.5405,1120.4008,669.04504,2280.7446;657.06213,1120.4008,1725.5371,2280.7446"/>
+                    <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/hi-res/en_Pepper-and-Carrot_by-David-Revoy_E35P12.jpg" data-zooms="704.99371,341.51254,619.11633,281.59805;393.43842,551.21326,1459.9161,159.77196;2280.7446,691.01367,99.857468,101.85461;718.97375,1198.2897,99.857468,840.79987;712.9823,1196.2925,850.78564,842.79706;780.88538,1192.2982,1599.7167,842.79706;2366.6221,1445.9362,61.911629,2049.0752;922.68298,551.21326,984.59467,2378.605;631.09918,211.69783,1851.3574,3289.3049"/>
+                </div>
+                <div id="focus-overlay" class="flex-col fill">
+                    <div class="grow obscured animated"></div>
+                    <div id="focus-overlay-height" class="flex animated" style="height:100%">
+                        <div class="grow obscured animated"></div>
+                        <div id="focus-overlay-width" class="focus animated" style="width:100%"></div>
+                        <div class="grow obscured animated"></div>
+                    </div>
+                    <div class="grow obscured animated"></div>
+                </div>
+                <div id="nav-controls" class="fill">
+                    <div class="left" id="nav-left" onclick="moveReader(false,false)"></div>
+                    <div class="right" id="nav-right" onclick="moveReader(true,false)"></div>
+                </div>
+                <div id="help-menu">
+                    <div id="help-controls" style="opacity:1; transform: translate(0,0);">
+                        <div><div class="key">&larr;</div>/ scroll up / clic : previous</div>
+                        <div><div class="key">&rarr;</div>/ scroll down / clic  : next</div>
+                        <div>-----------------------</div>
+                        <div><div class="key">F</div>: Toggle fullscreen</div>
+                        <div><div class="key">P</div>: Toggle progress bar</div>
+                        <div><div class="key">V</div>: Toggle panel / page viewing mode</div>
+                    </div>
+                </div>
+            </div>
+            <div id="reader-progress-container">
+                <div id="reader-progress-bar"></div>
+                <div id="reader-progress-pages"></div>
+            </div>
+        </div>
+        <!-- End of Melpomene comic reader -->
+
+
+    </body>
+    
+    <!-- melpomene_js.html import -->
+    <script src="../melpomene.js"></script> 
+    
+</html>

demos/pepper_and_carrot_e35_lowres.html

@@ -18,7 +18,7 @@
         <div id="reader-frame">
             <div id="reader-content-frame">
                 
-                <div id="reader-pages" data-pages-width="2481" data-pages-height="3503" hidden>
+                <div id="reader-pages" class="animated" data-pages-width="2481" data-pages-height="3503" hidden>
                     <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/low-res/en_Pepper-and-Carrot_by-David-Revoy_E35P01.jpg"/>
                     <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/low-res/en_Pepper-and-Carrot_by-David-Revoy_E35P02.jpg"/>
                     <img loading="lazy" src="https://www.peppercarrot.com/0_sources/ep35_The-Reflection/low-res/en_Pepper-and-Carrot_by-David-Revoy_E35P03.jpg"/>

melpomene.css

@@ -1,4 +1,5 @@
-/* Melpomene CSS */
+/* Melpomene webcomic reader CSS */
+/* Version 1.0.0 - UNSTABLE */
 /* CC-BY-NC-SA : https://git.aribaud.net/caribaud/melpomene/ */
 
 :root {

melpomene.html

@@ -2,13 +2,11 @@
 <!-- CC-BY-NC-SA https://git.aribaud.net/caribaud/melpomene/ -->
 <div id="reader-frame">
     <div id="reader-content-frame">
-    
+        <!-- replace all 'xxxx' with the actual value -->
-        <div id="reader-pages" class="animated" data-pages-width="9999" data-pages-height="9999" hidden>
+        <div id="reader-pages" class="animated" data-pages-width="xxxx" data-pages-height="xxxx" hidden>
-            <img loading="lazy" src="https://link.to.my/comic/page.jpg"/>
+            <img loading="lazy" src="xxxx" data-zooms="xxxx"/>
-            <!-- Change "https://link.to.my/comic/page.jpg" with you page URL. -->
+            <!-- duplicate img for each comic page -->
-            <!-- You can add more pages by duplicating the line -->
         </div>
-        
         <div id="focus-overlay" class="flex-col fill">
             <div class="grow obscured animated"></div>
             <div id="focus-overlay-height" class="flex animated" style="height:100%">
@@ -18,12 +16,10 @@
             </div>
             <div class="grow obscured animated"></div>
         </div>
-        
         <div id="nav-controls" class="fill">
             <div class="left" id="nav-left" onclick="moveReader(false,false)"></div>
             <div class="right" id="nav-right" onclick="moveReader(true,false)"></div>
         </div>
-        
         <div id="help-menu">
             <div id="help-controls" style="opacity:1; transform: translate(0,0);">
                 <div><div class="key">&larr;</div>/ scroll up / clic : previous</div>
@@ -34,9 +30,7 @@
                 <div><div class="key">V</div>: Toggle panel / page viewing mode</div>
             </div>
         </div>
-    
     </div>
-    
     <div id="reader-progress-container">
         <div id="reader-progress-bar"></div>
         <div id="reader-progress-pages"></div>

melpomene.js

@@ -1,4 +1,5 @@
-/* Melpomene CSS */
+/* Melpomene webcomic reader JS */
+/* Version 1.0.0 - UNSTABLE */
 /* CC-BY-NC-SA : https://git.aribaud.net/caribaud/melpomene/ */
 
 //============
@@ -34,6 +35,15 @@ PROGRESS_BAR_CONTAINER = document.getElementById("reader-progress-container")
 PROGRESS_BAR = document.getElementById("reader-progress-bar")
 PROGRESS_BAR_PAGES = document.getElementById("reader-progress-pages")
 
+//===========================
+//  STATES GLOBAL VARIABLES
+//===========================
+
+// The variable ZOOMS can either be defined by another JS file or contructed at init
+if (typeof PAGES_ZOOMS == 'undefined') {
+    PAGES_ZOOMS = null
+}
+
 CURRENT_ZOOM = 0
 CURRENT_PAGE = 1
 CURRENT_WIDTH = 0
@@ -51,10 +61,39 @@ MOUSEWHELL_WAIT = false
 // Zooms utilites
 // --------------
 
+function loadZoomsFromImgTagsIfRequired(){
+    
+    // Zooms may be defined by another JS file
+    if (PAGES_ZOOMS == null){
+        
+        PAGES_ZOOMS = []
+        
+        // parse the data-zooms of each img and and the page number info
+        for (var i = 0; i < READER_PAGES.children.length; i++) {
+            
+            zooms_raw_data = READER_PAGES.children[i].dataset.zooms
+            
+            // ';' separates zooms data, ',' separates values
+            // We add the page number (adding 1 because of indexing)
+            zooms = zooms_raw_data.split(";").map(
+                zoom => [i + 1].concat(
+                    zoom.split(',').map(
+                        value => parseFloat(value)
+                    )
+                )
+            )
+            
+            PAGES_ZOOMS = PAGES_ZOOMS.concat(zooms)
+        }
+        
+    }
+    
+}
+
 function getFirstZoomOfPage(pageNumber){
    
-    for (var zoom_idx = 0; zoom_idx < zooms.length; zoom_idx++){
+    for (var zoom_idx = 0; zoom_idx < PAGES_ZOOMS.length; zoom_idx++){
-        if (zooms[zoom_idx][0] == pageNumber) {
+        if (PAGES_ZOOMS[zoom_idx][0] == pageNumber) {
             return zoom_idx
         }
     }
@@ -63,12 +102,12 @@ function getFirstZoomOfPage(pageNumber){
 function getLastZoomOfPage(pageNumber){
     let res = null
     
-    for (var zoom_idx = 0; zoom_idx < zooms.length; zoom_idx++){
+    for (var zoom_idx = 0; zoom_idx < PAGES_ZOOMS.length; zoom_idx++){
-        if (zooms[zoom_idx][0] == pageNumber) {
+        if (PAGES_ZOOMS[zoom_idx][0] == pageNumber) {
             res = zoom_idx
         }
         
-        if (res != null && zooms[zoom_idx][0] != pageNumber) {
+        if (res != null && PAGES_ZOOMS[zoom_idx][0] != pageNumber) {
             break
         }
     }
@@ -77,11 +116,11 @@ function getLastZoomOfPage(pageNumber){
 }
 
 function getZoomCountForPage(pageNumber) {
-    return zooms.filter(zoom => zoom[0] == pageNumber).length
+    return PAGES_ZOOMS.filter(zoom => zoom[0] == pageNumber).length
 }
 
 function getCurrentZoomIndexForPage() {
-    previousZoomsCount = zooms.filter(zoom => zoom[0] < CURRENT_PAGE).length
+    previousZoomsCount = PAGES_ZOOMS.filter(zoom => zoom[0] < CURRENT_PAGE).length
     return CURRENT_ZOOM - previousZoomsCount + 1
 }
 
@@ -148,6 +187,7 @@ function totalPagesWidth() {
 // =========
 
 function initReader(){
+    loadZoomsFromImgTagsIfRequired()
     moveReaderDisplayToZoom(0)
     
     // Smoothly show pictures when they intersect with the viewport
@@ -232,7 +272,7 @@ function moveReaderDisplayToPage(pageNumber) {
 
 function moveReaderDisplayToZoom(index) {
     
-    moveReaderDisplayToArea(zooms[index][0], zooms[index][1], zooms[index][2], zooms[index][3], zooms[index][4])
+    moveReaderDisplayToArea(PAGES_ZOOMS[index][0], PAGES_ZOOMS[index][1], PAGES_ZOOMS[index][2], PAGES_ZOOMS[index][3], PAGES_ZOOMS[index][4])
     
     CURRENT_ZOOM = index
 }
@@ -278,7 +318,7 @@ function moveReader(to_next) {
     
     } else {
     
-        if (to_next && CURRENT_ZOOM < zooms.length - 1) {
+        if (to_next && CURRENT_ZOOM < PAGES_ZOOMS.length - 1) {
             moveReaderDisplayToZoom(CURRENT_ZOOM + 1)
         }
         

melpomene_head.html

@@ -1 +0,0 @@
-<link rel="stylesheet" href="melpomene.css">

melpomene_js.html

@@ -1,2 +0,0 @@
-<script src="zooms_data.js"></script> 
-<script src="melpomene.js"></script> 

zooms_generator.py

@@ -1,48 +1,182 @@
-# Melpomene comic reader
+# Melpomene webcomic reader JSON/JS/HTML generator
+# Version 1.0.0 - UNSTABLE
 # CC-BY-NC-SA https://git.aribaud.net/caribaud/melpomene/
 
 import sys
 import re
 import xml.etree.ElementTree as ET
+import argparse
 
 from pathlib import Path
 
 
-def extract_zooms(src_folder, dest_file):
+HTML_START_CONSTANT = """\
+<!-- Melpomene comic reader -->
+<!-- CC-BY-NC-SA https://git.aribaud.net/caribaud/melpomene/ -->
+<div id="reader-frame">
+    <div id="reader-content-frame">
+"""
+
+HTML_END_CONSTANT = """\
+        <div id="focus-overlay" class="flex-col fill">
+            <div class="grow obscured animated"></div>
+            <div id="focus-overlay-height" class="flex animated" style="height:100%">
+                <div class="grow obscured animated"></div>
+                <div id="focus-overlay-width" class="focus animated" style="width:100%"></div>
+                <div class="grow obscured animated"></div>
+            </div>
+            <div class="grow obscured animated"></div>
+        </div>
+        <div id="nav-controls" class="fill">
+            <div class="left" id="nav-left" onclick="moveReader(false,false)"></div>
+            <div class="right" id="nav-right" onclick="moveReader(true,false)"></div>
+        </div>
+        <div id="help-menu">
+            <div id="help-controls" style="opacity:1; transform: translate(0,0);">
+                <div><div class="key">&larr;</div>/ scroll up / clic : previous</div>
+                <div><div class="key">&rarr;</div>/ scroll down / clic  : next</div>
+                <div>-----------------------</div>
+                <div><div class="key">F</div>: Toggle fullscreen</div>
+                <div><div class="key">P</div>: Toggle progress bar</div>
+                <div><div class="key">V</div>: Toggle panel / page viewing mode</div>
+            </div>
+        </div>
+    </div>
+    <div id="reader-progress-container">
+        <div id="reader-progress-bar"></div>
+        <div id="reader-progress-pages"></div>
+    </div>
+</div>
+<!-- End of Melpomene comic reader -->
+"""
+
+
+def extract_zooms(src_folder):
     folder = Path(src_folder)
 
     zooms = {}
+    
+    max_width = 0
+    max_height = 0
+    
+    idx = 0
 
     for svg_path in folder.glob("*.svg"):
-        print(svg_path.name)
-        match = re.search("P(\d+)", svg_path.name)
-        if match:
         
-            page_idx = int(match.group(1))
+        idx += 1
+    
+        print(f"page {idx} : {svg_path.name}")
+    
+        zooms[idx] = {
+            "name": svg_path.stem,
+            "zooms": [],
+        }
+    
+        tree = ET.parse(svg_path)
+        root = tree.getroot()
         
-            zooms[page_idx] = []
+        for svg in root.findall('.//{*}svg'):
+            if area.get("width") > max_width:
+                max_width = area.get("width")
+            if area.get("height") > max_width:
+                max_width = area.get("height")
         
-            tree = ET.parse(svg_path)
+        for area in root.findall('.//{*}rect'):
-            root = tree.getroot()
+            zooms[idx]["zooms"].append([
-            
+                float(area.get("width")),
-            for area in root.findall('.//{*}rect'):
+                float(area.get("height")),
-                zooms[page_idx].append([
+                float(area.get("x")),
-                    float(area.get("width")),
+                float(area.get("y")),
-                    float(area.get("height")),
+            ])
-                    float(area.get("x")),
+
-                    float(area.get("y")),
+    return zooms, max_width, max_height
-                ])
+
+
+def write_json_or_js(zooms, dest_file, is_js):
 
     with open(dest_file, "w") as data_file:
-        data_file.write("zooms = [\n")
+    
+        if is_js:
+            data_file.write("PAGES_ZOOMS = ")
+        data_file.write("[\n")
+        first_coma_skiped = False
         for page_idx in sorted(zooms.keys()):
-            for zoom in zooms[page_idx]:
+            for zoom in zooms[page_idx]["zooms"]:
             
                 if zoom[2] < 0 or zoom[3] < 0 :
                     print(f"WARNING: negative pos x / pos y in page {page_idx} for zoom {zoom} (is the rectangle flipped?)")
             
-                data_file.write(f"    {[page_idx] + zoom},\n")
+                if first_coma_skiped:
-        data_file.write("]\n")
+                    data_file.write(",\n")
+                else:
+                    first_coma_skiped = True
+                data_file.write(f"    {[page_idx] + zoom}")
+        data_file.write("\n]\n")
+
+
+def write_html(zooms, dest_file, pages_width, pages_height, prefix, extention):
+    
+    with open(dest_file, "w") as data_file:
+    
+        data_file.write(HTML_START_CONSTANT)
+    
+        data_file.write(f'        <div id="reader-pages" class="animated" data-pages-width="{pages_width}" data-pages-height="{pages_height}" hidden>\n')
+        
+        for page_idx in sorted(zooms.keys()):
+            img_url = f"{prefix}{zooms[page_idx]['name']}.{extention}"
+            zoom_html_data = [','.join([str(zoom) for zoom in page_zooms]) for page_zooms in zooms[page_idx]["zooms"]]
+            zoom_html_str = ';'.join(zoom_html_data)
+            data_file.write(f'            <img loading="lazy" src="{img_url}" data-zooms="{zoom_html_str}"/>\n')
+        
+        data_file.write(f'        </div>\n')
+        
+        data_file.write(HTML_END_CONSTANT)
+
+def generate_argparse():
+    """ Generate Melpomene's generator input parser"""
+    
+    parser = argparse.ArgumentParser(
+        description="Helper that can generate JSON / JS / HTML files for Melpomene webcomic reader"
+    )
+    
+    parser.add_argument("output_format", choices=["html", "json", "js"], help="The type of output to generate")
+    parser.add_argument("svg_folders", help="Path of the folder containing the SVGs")
+    parser.add_argument("-o", metavar="dest_file", help="Where to write the generator output to")
+    parser.add_argument("-p", default="", metavar="img_url_prefix", help="What to prefix the URL of the images when using HTML format.")
+    parser.add_argument("-e", default="png", metavar="img_ext", help="What extention to use in the URL of the images when using HTML format.")
+    
+    return parser
+
 
 if __name__ == "__main__":
-    extract_zooms(sys.argv[1], sys.argv[2])
+
+    args = generate_argparse().parse_args()
+    
+    
+    # Get the final outout name
+    output = None
+    
+    if not args.o:
+        output = "melpomene_data"
+    else:
+        output = args.o
+    
+    if args.output_format == "html" and not output.endswith(".html"):
+        output += ".html"
+    
+    elif args.output_format == "json" and not output.endswith(".json"):
+        output += ".json"
+    
+    elif args.output_format == "js" and not output.endswith(".js"):
+        output += ".js"
+    
+    zooms, max_width, max_height = extract_zooms(args.svg_folders)
+
+    if args.output_format == "html":
+        write_html(zooms, output, max_width, max_height, args.p, args.e)
+    
+    elif args.output_format == "json":
+        write_json_or_js(zooms, output, False)
+    
+    elif args.output_format == "js":
+        write_json_or_js(zooms, output, True)