erp5_document_scanner: move the caman code into a separate function, where the...

erp5_document_scanner: move the caman code into a separate function, where the promise canceller will cleanup the memory

bt5/erp5_document_scanner/PathTemplateItem/web_page_module/rjs_gadget_document_scanner_css.css

@@ -84,10 +84,13 @@ div[data-gadget-url$="gadget_document_scanner.html"] > .camera > .thumbnail-list
 }
 
 div[data-gadget-url$="gadget_document_scanner.html"] .show-img {
+  width: 100%;
   padding-left: 0.2em;
+  padding-top: 0.2em;
   width: 6em;
   height: 6em;
   object-fit: cover;
+  float: left;
 }
 
 div[data-gadget-url$="gadget_document_scanner.html"] .thumbnail-list > button {
@@ -102,6 +105,7 @@ div[data-gadget-url$="gadget_document_scanner.html"] .upload-error {
 div[data-gadget-url$="gadget_document_scanner.html"] .new-btn {
   display: inline-grid !important;
   margin-left: 0.2em;
+  margin-top: 0.2em;
   border: 1px solid rgba(0, 0, 0, 0.14);
   border-radius: 0.325em;
   width: 6em;
@@ -113,7 +117,11 @@ div[data-gadget-url$="gadget_document_scanner.html"] .img-container {
   max-width: 100%;
 }
 
-div[data-gadget-url$="gadget_document_scanner.html"] .img-container img {
-  /* This is important */
-  width: 100%;
+div[data-gadget-url$="gadget_document_scanner.html"] .btn-thumbnail:before {
+  color: #000;
+  position: absolute;
+  transform: translate(-50%, -50%);
+  -ms-transform: translate(-50%, -50%);
+  text-align: center;
+  font-size: 16pt;
 }

bt5/erp5_document_scanner/PathTemplateItem/web_page_module/rjs_gadget_document_scanner_css.xml

@@ -244,7 +244,7 @@
                   </item>
                   <item>
                       <key> <string>serial</string> </key>
-                      <value> <string>981.60817.7698.61030</string> </value>
+                      <value> <string>981.61366.62222.30037</string> </value>
                   </item>
                   <item>
                       <key> <string>state</string> </key>
@@ -262,7 +262,7 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1582038920.76</float>
+                              <float>1582071888.35</float>
                               <string>UTC</string>
                             </tuple>
                           </state>

bt5/erp5_document_scanner/PathTemplateItem/web_page_module/rjs_gadget_document_scanner_js.js

@@ -50,6 +50,45 @@
     return new RSVP.Promise(waitForStream, canceller);
   }
 
+  function handleCaman(canvas, settings) {
+    var local_caman;
+
+    function canceller() {
+      // It's weird but Caman stores a lot of data
+      // in this variables. Please, double check before remove
+      // this code
+      local_caman.pixelData = null;
+      local_caman.originalPixelData = null;
+      local_caman.renderer.modPixelData = null;
+      local_caman.imageData = null;
+      local_caman.initializedPixelData = null;
+      // Clear caman as much as possible
+      local_caman = null;
+      caman.Store.flush(true);
+    }
+
+    return new Promise(function (resolve) {
+      // XXX the correct usage is `new Caman()` but the library does not support it
+      local_caman = caman(canvas, null, function () {
+        if (settings.brightness && settings.brightness !== 0) {
+          this.brightness(settings.brightness);
+        }
+        if (settings.contrast && settings.contrast !== 0) {
+          this.contrast(settings.contrast);
+        }
+        if (settings.enable_greyscale) {
+          this.greyscale();
+        }
+        this.render(function () {
+          // XXX canceller should be called automatically
+          canceller();
+          resolve([this.context.canvas, settings.compression]);
+        });
+      });
+      return local_caman;
+    }, canceller);
+  }
+
   function handleCropper(element, data, callback) {
     var cropper;
 
@@ -200,8 +239,11 @@
             }
 
             if (gadget.state['blob_state_' + i] === "saving") {
-              btn_class = "ui-btn-icon-left ui-icon-spinner";
+              btn_class = "btn-thumbnail ui-btn-icon-top ui-icon-spinner";
+            } else {
+              btn_class = "btn-thumbnail";
             }
+
             thumbnail_dom_list.push(domsugar('button', {
               type: "button",
               "class": btn_class,
@@ -299,8 +341,7 @@
       image_capture = new window.ImageCapture(
         gadget.element.querySelector('video').srcObject.getVideoTracks()[0]
       ),
-      div,
-      local_caman;
+      div;
 
     return new RSVP.Queue()
       .push(function () {
@@ -320,34 +361,7 @@
         canvas.height = bitmap.height;
         canvas.getContext('2d').drawImage(bitmap, 0, 0);
         if (settings.brightness || settings.contrast || settings.enable_greyscale || settings.compression) {
-          return new RSVP.Queue()
-            .push(function (result) {
-              return new Promise(function (resolve) {
-                // XXX the correct usage is `new Caman()` but the library does not support it
-                local_caman = caman(canvas, null, function () {
-                  if (settings.brightness && settings.brightness !== 0) {
-                    this.brightness(settings.brightness);
-                  }
-                  if (settings.contrast && settings.contrast !== 0) {
-                    this.contrast(settings.contrast);
-                  }
-                  if (settings.enable_greyscale) {
-                    this.greyscale();
-                  }
-                  this.render(function () {
-                    // It's weird but Caman store a lot of data
-                    // in this variables. Please, double check before remove
-                    // this code
-                    this.pixelData = null;
-                    this.originalPixelData = null;
-                    this.renderer.modPixelData = null;
-                    this.imageData = null;
-                    this.initializedPixelData = null;
-                    resolve([this.context.canvas, settings.compression]);
-                  });
-                });
-              });
-            });
+          return handleCaman(canvas, settings);
         }
         return [canvas, settings.compression];
       })
@@ -355,9 +369,6 @@
         var canvas = result_list[0],
           compression = settings.compression || 1;
 
-        // Clear caman as much as possible
-        local_caman = null;
-        caman.Store.flush(true);
         return RSVP.all([
           gadget.getTranslationList(["Delete", "Save"]),
           new Promise(function (resolve) {

bt5/erp5_document_scanner/PathTemplateItem/web_page_module/rjs_gadget_document_scanner_js.xml

@@ -244,7 +244,7 @@
                   </item>
                   <item>
                       <key> <string>serial</string> </key>
-                      <value> <string>981.60657.60687.48896</string> </value>
+                      <value> <string>981.61472.39170.22050</string> </value>
                   </item>
                   <item>
                       <key> <string>state</string> </key>
@@ -262,7 +262,7 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1582029620.49</float>
+                              <float>1582078293.94</float>
                               <string>UTC</string>
                             </tuple>
                           </state>