Fixed centering of icons. Disabled zooming in/out on Windows. Added default icons

resources/images/action_default.svg

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><path d="M14.5,1.5v12a1,1,0,0,1-1,1H1.5a1,1,0,0,1-1-1V1.5a1,1,0,0,1,1-1h12a1,1,0,0,1,1,1Z" style="fill:none;stroke:#949494;stroke-linecap:round;stroke-linejoin:round"/><polyline points="4,5 6.5,7.5 4,10" style="fill:none;stroke:#009688;stroke-linecap:round;stroke-linejoin:round"/><line x1="8" y1="10" x2="11" y2="10" style="fill:none;stroke:#009688;stroke-linecap:round;stroke-linejoin:round"/></svg>

resources/web/dialog/SpeedDial/speeddial.js

@@ -294,13 +294,21 @@ function actionIcon(a) {
     return (a && a.icon) ? a.icon : "";
 }
 
-// Put a pictogram into a tile (search row, favourites tile, or tab row). No icon leaves the tile
-// blank. `mono` marks the white tab-strip glyphs, which the CSS recolors to the shared gray.
+// Pictogram shown when an action carries none (plugins, icon-less commands/settings). A dedicated
+// theme-neutral glyph (resources/images/action_default.svg: frame + ">_" prompt), so no tile is
+// blank and no existing action's icon is borrowed.
+var DEFAULT_ICON = "action_default";
+
+// SVG base name a tile actually renders: the action's own icon, else the placeholder. Pure.
+function tileIcon(a) {
+    return actionIcon(a) || DEFAULT_ICON;
+}
+
+// Put a pictogram into a tile (search row, favourites tile, or tab row). `mono` marks the white
+// tab-strip glyphs, which the CSS recolors to the shared gray.
 function fillTile(tile, a, mono) {
     tile.textContent = "";
-    var icon = actionIcon(a);
-    if (!icon)
-        return;
+    var icon = tileIcon(a);
     var img = document.createElement("img");
     img.className = mono ? "tile-icon tab-mono" : "tile-icon";
     img.src = ICON_BASE + icon + ".svg";

resources/web/dialog/SpeedDial/speeddial.test.js

@@ -281,6 +281,17 @@ assert.equal(ctx.actionIcon({ id: "x", title: "Plugin action" }), "",
 assert.equal(ctx.actionIcon(null), "",
     "a null action (tab row) renders a blank tile");
 
+// tileIcon: the base name a tile renders - the action's own icon when present, else the placeholder.
+assert.equal(ctx.tileIcon({ id: "x", title: "Slice", icon: "media_play" }), "media_play",
+    "an action with an icon keeps it");
+assert.equal(ctx.tileIcon({ id: "x", title: "Go to tab...", icon: "" }), "action_default",
+    "an empty icon falls back to the placeholder");
+assert.equal(ctx.tileIcon({ id: "x", title: "Plugin action" }), "action_default",
+    "a missing icon falls back to the placeholder");
+assert.equal(ctx.DEFAULT_ICON, "action_default", "the placeholder is the dedicated default glyph");
+assert.ok(fs.existsSync(__dirname + "/../../../images/action_default.svg"),
+    "the placeholder SVG ships alongside the page's other icons");
+
 // needsModeSwitch: a setting is gated only when its required mode outranks the user's current mode.
 assert.equal(ctx.needsModeSwitch({ mode: "advanced" }, "simple"), true, "Advanced is gated in Simple mode");
 assert.equal(ctx.needsModeSwitch({ mode: "expert" }, "simple"), true, "Expert is gated in Simple mode");

resources/web/dialog/SpeedDial/style.css

@@ -331,12 +331,15 @@ body {
     border: 1px solid var(--speed-tile-border, #d8d8d8);
 }
 
-/* Native SVG pictogram in a tile; blank tiles (no icon) have no child. */
+/* Native SVG pictogram in a tile. The Orca icon grid draws 1px strokes from 0.5..14.5 of the 16
+   viewBox, so the visible glyph is 0..15 and, centered as-is, leaves one extra pixel on the right/
+   bottom (the "Save Project leans left" look). Shift by half a pixel to center the visible artwork. */
 .tile-icon {
     width: 16px;
     height: 16px;
     display: block;
     pointer-events: none;
+    transform: translate(.5px, .5px);
 }
 
 /* Tab-strip glyphs are drawn white for the dark tab bar; recolor to the shared #949494 gray so