Show waiting cursor while taking a tweet screenshot

Core/FormBrowser.cs

@@ -25,6 +25,23 @@ namespace TweetDuck.Core{
     sealed partial class FormBrowser : Form{
         private static UserConfig Config => Program.UserConfig;
 
+        public bool IsWaiting{
+            set{
+                if (value){
+                    browser.Enabled = false;
+                    Cursor = Cursors.WaitCursor;
+                }
+                else{
+                    browser.Enabled = true;
+                    Cursor = Cursors.Default;
+
+                    if (Focused){ // re-focus browser only if the window or a child is activated
+                        browser.Focus();
+                    }
+                }
+            }
+        }
+
         public string UpdateInstallerPath { get; private set; }
 
         private readonly ChromiumWebBrowser browser;
@@ -225,6 +242,10 @@ private void FormBrowser_Activated(object sender, EventArgs e){
             if (!isLoaded)return;
 
             trayIcon.HasNotifications = false;
+
+            if (!browser.Enabled){      // when taking a screenshot, the window is unfocused and
+                browser.Enabled = true; // the browser is disabled; if the user clicks back into
+            }                           // the window, enable the browser again
         }
 
         private void FormBrowser_LocationChanged(object sender, EventArgs e){

Core/Notification/Screenshot/TweetScreenshotManager.cs

@@ -8,14 +8,14 @@
 
 namespace TweetDuck.Core.Notification.Screenshot{
     sealed class TweetScreenshotManager : IDisposable{
-        private readonly Form owner;
+        private readonly FormBrowser owner;
         private readonly PluginManager plugins;
         private readonly Timer timeout;
         private readonly Timer disposer;
         
         private FormNotificationScreenshotable screenshot;
 
-        public TweetScreenshotManager(Form owner, PluginManager pluginManager){
+        public TweetScreenshotManager(FormBrowser owner, PluginManager pluginManager){
             this.owner = owner;
             this.plugins = pluginManager;
 
@@ -28,8 +28,7 @@ public TweetScreenshotManager(Form owner, PluginManager pluginManager){
 
         private void timeout_Tick(object sender, EventArgs e){
             timeout.Stop();
-            screenshot.Location = ControlExtensions.InvisibleLocation;
-            disposer.Start();
+            OnFinished();
         }
 
         private void disposer_Tick(object sender, EventArgs e){
@@ -50,6 +49,10 @@ public void Trigger(string html, int width, int height){
             screenshot.LoadNotificationForScreenshot(new TweetNotification(string.Empty, html, 0, string.Empty, string.Empty), width, height);
             screenshot.Show();
             timeout.Start();
+
+            #if !(DEBUG && NO_HIDE_SCREENSHOTS)
+            owner.IsWaiting = true;
+            #endif
         }
 
         private void Callback(){
@@ -61,14 +64,19 @@ private void Callback(){
             screenshot.TakeScreenshot();
 
             #if !(DEBUG && NO_HIDE_SCREENSHOTS)
-            screenshot.Location = ControlExtensions.InvisibleLocation;
-            disposer.Start();
+            OnFinished();
             #else
             screenshot.MoveToVisibleLocation();
             screenshot.FormClosed += (sender, args) => disposer.Start();
             #endif
         }
 
+        private void OnFinished(){
+            screenshot.Location = ControlExtensions.InvisibleLocation;
+            owner.IsWaiting = false;
+            disposer.Start();
+        }
+
         public void Dispose(){
             timeout.Dispose();
             disposer.Dispose();