From 9cf4998701e4e11038e273304817efb1f02647bd Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Fri, 12 May 2017 13:54:02 +0900
Subject: [PATCH] Make chat resizable via drag, save user set size

---
 osu.Game/Configuration/OsuConfigManager.cs |  6 +++-
 osu.Game/Overlays/ChatOverlay.cs           | 33 +++++++++++++++++++---
 2 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/osu.Game/Configuration/OsuConfigManager.cs b/osu.Game/Configuration/OsuConfigManager.cs
index 3907496ca2..ba19d8592a 100644
--- a/osu.Game/Configuration/OsuConfigManager.cs
+++ b/osu.Game/Configuration/OsuConfigManager.cs
@@ -3,6 +3,7 @@
 
 using osu.Framework.Configuration;
 using osu.Framework.Platform;
+using osu.Game.Overlays;
 using osu.Game.Screens.Select;
 
 namespace osu.Game.Configuration
@@ -19,6 +20,8 @@ namespace osu.Game.Configuration
             Set(OsuConfig.DisplayStarsMinimum, 0.0, 0, 10);
             Set(OsuConfig.DisplayStarsMaximum, 10.0, 0, 10);
 
+            Set(OsuConfig.ChatDisplayHeight, ChatOverlay.DEFAULT_HEIGHT, 0.2, 1);
+
             // Online settings
 
             Set(OsuConfig.Username, string.Empty);
@@ -102,6 +105,7 @@ namespace osu.Game.Configuration
         DisplayStarsMaximum,
         SnakingInSliders,
         SnakingOutSliders,
-        ShowFpsDisplay
+        ShowFpsDisplay,
+        ChatDisplayHeight
     }
 }
diff --git a/osu.Game/Overlays/ChatOverlay.cs b/osu.Game/Overlays/ChatOverlay.cs
index 75ddcd89b6..3630ad0518 100644
--- a/osu.Game/Overlays/ChatOverlay.cs
+++ b/osu.Game/Overlays/ChatOverlay.cs
@@ -7,6 +7,7 @@ using System.Diagnostics;
 using System.Linq;
 using OpenTK;
 using osu.Framework.Allocation;
+using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
@@ -21,6 +22,7 @@ using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.UserInterface;
 using OpenTK.Graphics;
 using osu.Framework.Input;
+using osu.Game.Configuration;
 
 namespace osu.Game.Overlays
 {
@@ -38,14 +40,19 @@ namespace osu.Game.Overlays
 
         private const int transition_length = 500;
 
+        public const float DEFAULT_HEIGHT = 0.4f;
+
         private GetMessagesRequest fetchReq;
 
         private readonly OsuTabControl<Channel> channelTabs;
 
+        private Bindable<double> chatHeight;
+
         public ChatOverlay()
         {
-            RelativeSizeAxes = Axes.X;
-            Size = new Vector2(1, 300);
+            RelativeSizeAxes = Axes.Both;
+            RelativePositionAxes = Axes.Both;
+            Size = new Vector2(1, DEFAULT_HEIGHT);
             Anchor = Anchor.BottomLeft;
             Origin = Anchor.BottomLeft;
 
@@ -93,6 +100,20 @@ namespace osu.Game.Overlays
             channelTabs.Current.ValueChanged += newChannel => CurrentChannel = newChannel;
         }
 
+        protected override bool OnDragStart(InputState state)
+        {
+            if (channelTabs.Hovering)
+                return true;
+
+            return base.OnDragStart(state);
+        }
+
+        protected override bool OnDrag(InputState state)
+        {
+            chatHeight.Value = Height - state.Mouse.Delta.Y / Parent.DrawSize.Y;
+            return base.OnDrag(state);
+        }
+
         public void APIStateChanged(APIAccess api, APIState state)
         {
             switch (state)
@@ -124,7 +145,7 @@ namespace osu.Game.Overlays
 
         protected override void PopOut()
         {
-            MoveToY(DrawSize.Y, transition_length, EasingTypes.InSine);
+            MoveToY(Height, transition_length, EasingTypes.InSine);
             FadeOut(transition_length, EasingTypes.InSine);
 
             inputTextBox.HoldFocus = false;
@@ -132,10 +153,14 @@ namespace osu.Game.Overlays
         }
 
         [BackgroundDependencyLoader]
-        private void load(APIAccess api)
+        private void load(APIAccess api, OsuConfigManager config)
         {
             this.api = api;
             api.Register(this);
+
+            chatHeight = config.GetBindable<double>(OsuConfig.ChatDisplayHeight);
+            chatHeight.ValueChanged += h => Height = (float)h;
+            chatHeight.TriggerChange();
         }
 
         private long? lastMessageId;