Attach a small menu to the preview windows, remove scrollbars on Windows

app/src/quickpreview/index.es6

@@ -53,6 +53,95 @@ const CrossplatformPreviewableExtensions = [
   'xlsb',
 ];
 
+const PreviewWindowMenuTemplate = [
+  {
+    label: 'File',
+    role: 'window',
+    submenu: [
+      {
+        label: 'Minimize Window',
+        accelerator: 'CmdOrCtrl+M',
+        role: 'minimize',
+      },
+      {
+        label: 'Close Window',
+        accelerator: 'CmdOrCtrl+W',
+        role: 'close',
+      },
+    ],
+  },
+  {
+    label: 'Edit',
+    submenu: [
+      {
+        label: 'Undo',
+        accelerator: 'CmdOrCtrl+Z',
+        role: 'undo',
+      },
+      {
+        label: 'Redo',
+        accelerator: 'Shift+CmdOrCtrl+Z',
+        role: 'redo',
+      },
+      {
+        type: 'separator',
+      },
+      {
+        label: 'Cut',
+        accelerator: 'CmdOrCtrl+X',
+        role: 'cut',
+      },
+      {
+        label: 'Copy',
+        accelerator: 'CmdOrCtrl+C',
+        role: 'copy',
+      },
+      {
+        label: 'Paste',
+        accelerator: 'CmdOrCtrl+V',
+        role: 'paste',
+      },
+      {
+        label: 'Select All',
+        accelerator: 'CmdOrCtrl+A',
+        role: 'selectall',
+      },
+    ],
+  },
+  {
+    label: 'View',
+    submenu: [
+      {
+        label: 'Reload',
+        accelerator: 'CmdOrCtrl+R',
+        click: function(item, focusedWindow) {
+          if (focusedWindow) focusedWindow.reload();
+        },
+      },
+      {
+        label: 'Toggle Full Screen',
+        accelerator: (function() {
+          if (process.platform === 'darwin') return 'Ctrl+Command+F';
+          else return 'F11';
+        })(),
+        click: function(item, focusedWindow) {
+          if (focusedWindow) focusedWindow.setFullScreen(!focusedWindow.isFullScreen());
+        },
+      },
+      {
+        label: 'Toggle Developer Tools',
+        accelerator: (function() {
+          if (process.platform === 'darwin') return 'Alt+Command+I';
+          else return 'Ctrl+Shift+I';
+        })(),
+        click: function(item, focusedWindow) {
+          if (focusedWindow) focusedWindow.toggleDevTools();
+        },
+      },
+    ],
+  },
+];
+
 export function canPossiblyPreviewExtension(file) {
   if (file.size > FileSizeLimit) {
     return false;
@@ -92,6 +181,7 @@ export function displayQuickPreviewWindow(filePath) {
     quickPreviewWindow.once('closed', () => {
       quickPreviewWindow = null;
     });
+    quickPreviewWindow.setMenu(remote.Menu.buildFromTemplate(PreviewWindowMenuTemplate));
   } else {
     quickPreviewWindow.show();
   }

app/src/quickpreview/preload.js

@@ -35,6 +35,9 @@ global.finishWithData = (previewPath, arrayBuffer) => {
 };
 
 global.finishWithWindowCapture = (previewPath, startedAt = Date.now()) => {
+  // Remove scroll bars or they appear in the capture on Windows
+  document.body.style.overflow = 'hidden';
+
   // Wait up to 1 sec for images in the rendered HTML to finish loading
   const waitingForImage = Array.from(document.querySelectorAll('img')).find(
     i => i.complete === false