From 24e474e6884e968b9dc76c8f033f37faf899f705 Mon Sep 17 00:00:00 2001
From: yflory <yann.flory@xwiki.com>
Date: Tue, 24 Mar 2020 15:25:58 +0100
Subject: [PATCH] Big canvas

---
 www/whiteboard/app-whiteboard.less |  4 ++-
 www/whiteboard/inner.js            | 42 +++++++++++++++++++++++++-----
 2 files changed, 38 insertions(+), 8 deletions(-)

diff --git a/www/whiteboard/app-whiteboard.less b/www/whiteboard/app-whiteboard.less
index 0ac575df6..b715e188c 100644
--- a/www/whiteboard/app-whiteboard.less
+++ b/www/whiteboard/app-whiteboard.less
@@ -35,7 +35,6 @@
     #cp-app-whiteboard-container {
         flex: 1;
         display: flex;
-        flex-flow: column;
         overflow: auto;
     }
 
@@ -43,14 +42,17 @@
     #cp-app-whiteboard-canvas-area {
         flex: 1;
         display: flex;
+        min-height: 0;
     }
     // created by fabricjs. styled so defaults don't break anything
     .cp-app-whiteboard-canvas-container {
+        width: 100%;
         margin: auto;
         background: white;
         flex: 1;
         min-height: 0;
         & > canvas {
+            width: 100%;
             border: 1px solid black;
         }
     }
diff --git a/www/whiteboard/inner.js b/www/whiteboard/inner.js
index 77057f505..e45cc35f0 100644
--- a/www/whiteboard/inner.js
+++ b/www/whiteboard/inner.js
@@ -137,7 +137,7 @@ define([
                 canvas.discardActiveGroup();
             }
             canvas.renderAll();
-            framework.localChange();
+            APP.onLocal();
         };
         $deleteButton.click(deleteSelection);
         $(window).on('keyup', function (e) {
@@ -220,7 +220,7 @@ define([
             var metadata = JSON.parse(JSON.stringify(metadataMgr.getMetadata()));
             metadata.palette = newPalette;
             metadataMgr.updateMetadata(metadata);
-            framework.localChange();
+            APP.onLocal();
         };
 
         var makeColorButton = function ($container) {
@@ -284,6 +284,35 @@ define([
         });
         var $canvas = $('canvas');
         var $canvasContainer = $('canvas').parents('.cp-app-whiteboard-canvas-container');
+
+        // Max for old macs: 2048×1464
+        // Max for IE: 8192x8192
+        var MAX = 8192;
+        var onResize = APP.onResize = function () {
+            $canvasContainer.css('width', '');
+            $canvasContainer.css('height', '');
+            var w = $canvasContainer.width() - 20;
+            var h = $canvasContainer.height();
+            canvas.forEachObject(function (obj) {
+                var c = obj.getCoords();
+                Object.keys(c).forEach(function (k) {
+                    if (c[k].x > w) { w = c[k].x + 1; }
+                    if (c[k].y > h) { h = c[k].y + 1; }
+                });
+            });
+            w = Math.min(w, MAX);
+            h = Math.min(h, MAX);
+            canvas.setWidth(w);
+            canvas.setHeight(h);
+            canvas.calcOffset();
+        };
+        $(window).on('resize', onResize);
+
+        var onLocal = APP.onLocal = function () {
+            framework.localChange();
+            APP.onResize();
+        };
+
         var $controls = $('#cp-app-whiteboard-controls');
         var metadataMgr = framework._.cpNfInner.metadataMgr;
 
@@ -333,7 +362,7 @@ define([
             }
             var cImg = new Fabric.Image(img, { left:0, top:0, angle:0, });
             APP.canvas.add(cImg);
-            framework.localChange();
+            onLocal();
         };
 
         // Embed image
@@ -403,7 +432,7 @@ define([
 
         $('#cp-app-whiteboard-clear').on('click', function () {
             canvas.clear();
-            framework.localChange();
+            onLocal();
         });
 
         // ---------------------------------------------
@@ -432,6 +461,7 @@ define([
             var content = newContent.content;
             canvas.loadFromJSON(content, waitFor(function () {
                 canvas.renderAll();
+                onResize();
             }));
         });
 
@@ -461,7 +491,7 @@ define([
             window.setTimeout(mkThumbnail, Thumb.UPDATE_FIRST);
         });
 
-        canvas.on('mouse:up', framework.localChange);
+        canvas.on('mouse:up', onLocal);
         framework.start();
     };
 
@@ -471,8 +501,6 @@ define([
             h('div#cp-app-whiteboard-canvas-area',
                 h('div#cp-app-whiteboard-container',
                     h('canvas#cp-app-whiteboard-canvas', {
-                        width: 600,
-                        height: 600
                     })
                 )
             ),