Merge pull request #4028 from peppy/add-ui-scale

Add UI scale

osu.Game/Configuration/OsuConfigManager.cs

@@ -105,6 +105,8 @@ namespace osu.Game.Configuration
 
             Set(OsuSetting.ScalingPositionX, 0.5f, 0f, 1f);
             Set(OsuSetting.ScalingPositionY, 0.5f, 0f, 1f);
+
+            Set(OsuSetting.UIScale, 1f, 0.8f, 1.6f, 0.01f);
         }
 
         public OsuConfigManager(Storage storage)
@@ -167,6 +169,7 @@ namespace osu.Game.Configuration
         ScalingPositionX,
         ScalingPositionY,
         ScalingSizeX,
-        ScalingSizeY
+        ScalingSizeY,
+        UIScale
     }
 }

osu.Game/Graphics/Containers/ScalingContainer.cs

@@ -46,10 +46,37 @@ namespace osu.Game.Graphics.Containers
                 RelativeSizeAxes = Axes.Both,
                 RelativePositionAxes = Axes.Both,
                 CornerRadius = 10,
-                Child = content = new DrawSizePreservingFillContainer()
+                Child = content = new ScalingDrawSizePreservingFillContainer(targetMode != ScalingMode.Gameplay)
             };
         }
 
+        private class ScalingDrawSizePreservingFillContainer : DrawSizePreservingFillContainer
+        {
+            private readonly bool applyUIScale;
+            private Bindable<float> uiScale;
+
+            public ScalingDrawSizePreservingFillContainer(bool applyUIScale)
+            {
+                this.applyUIScale = applyUIScale;
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(OsuConfigManager osuConfig)
+            {
+                if (applyUIScale)
+                {
+                    uiScale = osuConfig.GetBindable<float>(OsuSetting.UIScale);
+                    uiScale.BindValueChanged(scaleChanged, true);
+                }
+            }
+
+            private void scaleChanged(float value)
+            {
+                this.ScaleTo(new Vector2(value), 500, Easing.Out);
+                this.ResizeTo(new Vector2(1 / value), 500, Easing.Out);
+            }
+        }
+
         [BackgroundDependencyLoader]
         private void load(OsuConfigManager config)
         {

osu.Game/OsuGame.cs

@@ -359,7 +359,10 @@ namespace osu.Game
                 {
                     RelativeSizeAxes = Axes.Both,
                 },
-                mainContent = new DrawSizePreservingFillContainer(),
+                mainContent = new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                },
                 overlayContent = new Container { RelativeSizeAxes = Axes.Both, Depth = float.MinValue },
                 idleTracker = new IdleTracker(6000)
             });

osu.Game/Overlays/Settings/Sections/Graphics/LayoutSettings.cs

@@ -63,9 +63,16 @@ namespace osu.Game.Overlays.Settings.Sections.Graphics
                     RelativeSizeAxes = Axes.X,
                     AutoSizeAxes = Axes.Y
                 },
+                new SettingsSlider<float, UIScaleSlider>
+                {
+                    LabelText = "UI Scaling",
+                    TransferValueOnCommit = true,
+                    Bindable = osuConfig.GetBindable<float>(OsuSetting.UIScale),
+                    KeyboardStep = 0.01f
+                },
                 new SettingsEnumDropdown<ScalingMode>
                 {
-                    LabelText = "Scaling",
+                    LabelText = "Screen Scaling",
                     Bindable = osuConfig.GetBindable<ScalingMode>(OsuSetting.Scaling),
                 },
                 scalingSettings = new FillFlowContainer<SettingsSlider<float>>
@@ -202,6 +209,11 @@ namespace osu.Game.Overlays.Settings.Sections.Graphics
             }
         }
 
+        private class UIScaleSlider : OsuSliderBar<float>
+        {
+            public override string TooltipText => base.TooltipText + "x";
+        }
+
         private class ResolutionSettingsDropdown : SettingsDropdown<Size>
         {
             protected override OsuDropdown<Size> CreateDropdown() => new ResolutionDropdownControl { Items = Items };