Improve thumbnail rendering and dialog loading, flatten CSS1.0.1

1 files changed, 102 insertions, 26 deletions

diff --git a/src/wmap.js b/src/wmap.js
index 2a179a7..4532368 100644
--- a/src/wmap.js
+++ b/src/wmap.js
@@ -1,11 +1,35 @@
 import { parse } from "wmap-parser";
-import { renderToCanvas } from "wmap-renderer-canvas";
+import { renderToCanvas, StageType } from "wmap-renderer-canvas";
 import DOMPurify from "isomorphic-dompurify";
 
 const internals = {
     kStyleSheet: "/plugins/wmap/wmap.css",
-    kCanvasWidth: 1384,
-    kCanvasHeight: 1884,
+    kDimensions: {
+        full: {
+            map: {
+                mapWidth: 1300,
+                mapHeight: 1000,
+                padding: 42,
+            },
+            fonts: {},
+        },
+        thumbnail: {
+            map: {
+                mapWidth: 403,
+                mapHeight: 310,
+                padding: 15,
+                vertexWidth: 8,
+                vertexHeight: 8,
+                arrowHeadSize: 3,
+                stageHeight: 50,
+            },
+            fonts: {
+                axisLabel: 8,
+                vertexLabel: 9,
+                note: 9,
+            },
+        },
+    },
 
     // Returns HTML that shows a message in the wiki.
     message(text) {
@@ -18,20 +42,35 @@ const internals = {
     },
 
     // Creates a wmap PNG from text.
-    async renderImage(source) {
+    async renderImage(source, dimensions) {
         const parsedText = parse(source);
 
         const canvas = document.createElement("canvas");
-        canvas.width = internals.kCanvasWidth;
-        canvas.height = internals.kCanvasHeight;
+        canvas.width = dimensions.map.mapWidth + 2 * dimensions.map.padding;
+        canvas.height = dimensions.map.mapHeight + 2 * dimensions.map.padding;
 
-        await renderToCanvas(parsedText, canvas);
+        // Further Improvements. The zoomed version could have a drop down
+        // to show the different StageTypes and allow one to see the image
+        // with the different types.
+        // This  could also potentially be in the toolbar that appears
+        // on hover to also show this in the download. It requires some
+        // thought on what the right interaction model would be.
+        await renderToCanvas(parsedText, canvas, StageType.ACTIVITIES, {
+            theme: {
+                sizes: {
+                    ...dimensions.map,
+                },
+                fonts: {
+                    ...dimensions.fonts,
+                },
+            },
+        });
         return canvas.toDataURL();
     },
 
     // Starts a download of the image.
     download(filename, text) {
-        var element = document.createElement("a");
+        const element = document.createElement("a");
         element.setAttribute("href", text);
         element.setAttribute("download", filename);
         element.style.display = "none";
@@ -42,13 +81,20 @@ const internals = {
 
     // Replaces the image in a window. Intended for use in a dialog.
     replaceImage(window, imageData) {
-        const $container = window.document.querySelector("main");
-        $container.querySelectorAll("img").forEach((img) => img.remove());
+        try {
+            const $container = window.document.querySelector("main");
+            $container.querySelectorAll("img").forEach((img) => img.remove());
 
-        const image = document.createElement("img");
-        image.src = imageData;
-        image.alt = "Wardley map rendered from source.";
-        $container.appendChild(image);
+            const image = document.createElement("img");
+            image.src = imageData;
+            image.alt = "Wardley map rendered from source.";
+            $container.appendChild(image);
+        } catch (error) {
+            console.error(
+                "wmap: Could not replace image. The DOM wasn't ready!",
+                error,
+            );
+        }
     },
 };
 
@@ -57,7 +103,7 @@ const internals = {
  */
 const emit = function emit($item) {
     const hasStyleSheet = [...document.styleSheets].some((styleSheet) =>
-        styleSheet.href.endsWith(internals.kStyleSheet),
+        styleSheet.href?.endsWith(internals.kStyleSheet),
     );
 
     if (!hasStyleSheet) {
@@ -76,7 +122,7 @@ const emit = function emit($item) {
  * Bind to events on the rendered block. Called once per block.
  * Convention is that double click opens the editor.
  *
- * @param {JQuery} $item the HTML element representing hte block.
+ * @param {JQuery} $item the HTML element representing the block.
  * @param {Object} item the configuration for that particular object.
  */
 const bind = async function bind($item, item) {
@@ -84,7 +130,7 @@ const bind = async function bind($item, item) {
         return wiki.textEditor($item, item);
     });
 
-    $item.on("click", "a", (event) => {
+    $item.on("click", "a", async (event) => {
         const { currentTarget } = event;
         const action = currentTarget.dataset?.action;
 
@@ -97,8 +143,12 @@ const bind = async function bind($item, item) {
         switch (action) {
             case "download":
                 {
+                    let imageData = await internals.renderImage(
+                        item.text,
+                        internals.kDimensions.full,
+                    );
                     const slug = $item.parents(".page").attr("id");
-                    internals.download(`${slug}.png`, item.png);
+                    internals.download(`${slug}.png`, imageData);
                 }
                 break;
             case "zoom":
@@ -110,12 +160,36 @@ const bind = async function bind($item, item) {
                         target,
                         "popup,height=600,width=800",
                     );
-                    if (dialog.location.pathname !== "/plugins/wmap/dialog/") {
-                        dialog.addEventListener("load", () => {
-                            internals.replaceImage(dialog, item.png);
-                        });
+
+                    if (!dialog || dialog.closed) {
+                        console.error("wmap: Failed to open dialog.");
+                        return;
+                    }
+
+                    let imageData = await internals.renderImage(
+                        item.text,
+                        internals.kDimensions.full,
+                    );
+
+                    // We *MUST* check both readyState and href, because
+                    // readyState will be complete when it first loads,
+                    // and this will be an empty window.
+                    if (
+                        dialog.document.readyState === "complete" &&
+                        dialog.document.location.href.includes(
+                            "/plugins/wmap/dialog/",
+                        )
+                    ) {
+                        internals.replaceImage(dialog, imageData);
                     } else {
-                        internals.replaceImage(dialog, item.png);
+                        console.info("We not loaded");
+                        dialog.addEventListener(
+                            "load",
+                            () => {
+                                internals.replaceImage(dialog, imageData);
+                            },
+                            { once: true },
+                        );
                     }
                 }
                 break;
@@ -123,10 +197,12 @@ const bind = async function bind($item, item) {
     });
 
     try {
-        let imageData = await internals.renderImage(item.text);
-        item.png = imageData;
+        let thumbnailData = await internals.renderImage(
+            item.text,
+            internals.kDimensions.thumbnail,
+        );
         $item.find(".viewer").html(`
-            <article class="wardley-map"><img src="${imageData}"</article>
+            <article class="wardley-map"><img src="${thumbnailData}"></article>
             <nav class="actions">
                 <menu>
                     <li><a href="#" data-action="download" title="Download"><img width="18" height="18" alt="download" src='data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" enable-background="new 0 0 24 24" viewBox="0 0 24 24" fill="grey"><g><rect fill="none" height="24" width="24"/></g><g><path d="M5,20h14v-2H5V20z M19,9h-4V3H9v6H5l7,7L19,9z"/></g></svg>'></a></li>