From e90189bbca179a6def91f180c6a359634c8f3757 Mon Sep 17 00:00:00 2001
From: rabbitism <popmessiah@hotmail.com>
Date: Wed, 11 Sep 2024 22:49:37 +0800
Subject: [PATCH] feat: 1. make full-screen dialog draggable to trigger window
 moving 2. Make sure full-screen is always full-screen when resizing window.

---
 src/Ursa/Controls/Dialog/DialogControlBase.cs |  1 -
 .../OverlayShared/OverlayDialogHost.Dialog.cs | 19 ++++++++++++++++---
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/Ursa/Controls/Dialog/DialogControlBase.cs b/src/Ursa/Controls/Dialog/DialogControlBase.cs
index 8bde726..aa0cabb 100644
--- a/src/Ursa/Controls/Dialog/DialogControlBase.cs
+++ b/src/Ursa/Controls/Dialog/DialogControlBase.cs
@@ -53,7 +53,6 @@ public abstract class DialogControlBase : OverlayFeedbackElement
         set => SetAndRaise(IsFullScreenProperty, ref _isFullScreen, value);
     }
 
-
     protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
     {
         base.OnApplyTemplate(e);
diff --git a/src/Ursa/Controls/OverlayShared/OverlayDialogHost.Dialog.cs b/src/Ursa/Controls/OverlayShared/OverlayDialogHost.Dialog.cs
index 0368aec..5478585 100644
--- a/src/Ursa/Controls/OverlayShared/OverlayDialogHost.Dialog.cs
+++ b/src/Ursa/Controls/OverlayShared/OverlayDialogHost.Dialog.cs
@@ -1,4 +1,5 @@
 using Avalonia;
+using Avalonia.Controls;
 using Avalonia.Input;
 using Avalonia.VisualTree;
 using Irihi.Avalonia.Shared.Helpers;
@@ -15,6 +16,8 @@ public partial class OverlayDialogHost
     
     private static void ResetDialogPosition(DialogControlBase control, Size newSize)
     {
+        control.MaxWidth = newSize.Width;
+        control.MaxHeight = newSize.Height;
         if (control.IsFullScreen)
         {
             control.Width = newSize.Width;
@@ -23,8 +26,6 @@ public partial class OverlayDialogHost
             SetTop(control, 0);
             return;
         }
-        control.MaxWidth = newSize.Width;
-        control.MaxHeight = newSize.Height;
         var width = newSize.Width - control.Bounds.Width;
         var height = newSize.Height - control.Bounds.Height;
         var newLeft = width * control.HorizontalOffsetRatio??0;
@@ -53,6 +54,7 @@ public partial class OverlayDialogHost
     {
         if (e.Source is DialogControlBase item)
         {
+            if (item.IsFullScreen) return;
             if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
             {
                 var p = e.GetPosition(this);
@@ -70,7 +72,18 @@ public partial class OverlayDialogHost
     {
         if (e.Source is DialogControlBase item)
         {
-            _lastPoint = e.GetPosition(item);
+            if (item.IsFullScreen)
+            {
+                var top = TopLevel.GetTopLevel(item);
+                if (top is Window w)
+                {
+                    w.BeginMoveDrag(e);
+                }
+            }
+            else
+            {
+                _lastPoint = e.GetPosition(item);
+            }
         }
     }