Added fade effect to the color legend

Klocman · May 2, 2017 · b006e0a · b006e0a
1 parent dbbbe2a
commit b006e0a
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Showing 3 changed files with 27 additions and 19 deletions.
diff --git a/source/BulkCrapUninstaller/Forms/ListLegendWindow.Designer.cs b/source/BulkCrapUninstaller/Forms/ListLegendWindow.Designer.cs
diff --git a/source/BulkCrapUninstaller/Forms/ListLegendWindow.cs b/source/BulkCrapUninstaller/Forms/ListLegendWindow.cs
@@ -13,6 +13,8 @@ namespace BulkCrapUninstaller.Forms
 {
     public partial class ListLegendWindow : Form
     {
+        private const double OpacityChangeAmount = .12;
+
         public ListLegendWindow()
         {
             InitializeComponent();
@@ -22,7 +24,7 @@ public ListLegendWindow()
                 Visible = false;
                 Owner.Focus();
             };
-            
+
             foreach (var control in this.GetAllChildren())
             {
                 control.MouseLeave += ControlOnMouseEvent;
@@ -41,39 +43,46 @@ public void UpdatePosition(Control owner)
 
         private void ListLegendWindow_VisibleChanged(object sender, System.EventArgs e)
         {
-            if(Opacity < .9)
-                opacityResetTimer.Enabled = true;
+            if (Opacity < .9)
+                opacityResetTimer.Start();
         }
 
         private void ListLegendWindow_EnabledChanged(object sender, System.EventArgs e)
         {
             if (Opacity < .9)
-                opacityResetTimer.Enabled = true;
+                opacityResetTimer.Start();
         }
 
         private void opacityResetTimer_Tick(object sender, EventArgs e)
-        {
-            if (!CheckMouseHover())
-            {
-                opacityResetTimer.Stop();
-                Opacity = 1;
-            }
-        }
-
-        private void ControlOnMouseEvent(object sender, EventArgs eventArgs)
         {
             if (CheckMouseHover())
             {
-                Opacity = .3;
-                opacityResetTimer.Enabled = true;
+                if (Math.Abs(Opacity - .3) < .03)
+                    opacityResetTimer.Stop();
+                else
+                    Opacity = OpacityLerp(.3);
             }
             else
             {
-                Opacity = 1;
-                opacityResetTimer.Enabled = false;
+                if (Math.Abs(Opacity - 1) < .03)
+                    opacityResetTimer.Stop();
+                else
+                    Opacity = OpacityLerp(1);
             }
         }
 
+        private double OpacityLerp(double target)
+        {
+            return Opacity > target
+                ? Math.Max(target, Opacity - OpacityChangeAmount)
+                : Math.Min(target, Opacity + OpacityChangeAmount);
+        }
+
+        private void ControlOnMouseEvent(object sender, EventArgs eventArgs)
+        {
+            opacityResetTimer.Start();
+        }
+
         private bool CheckMouseHover()
         {
             var pt = PointToClient(Cursor.Position);

diff --git a/source/BulkCrapUninstaller/Forms/MainWindow.cs b/source/BulkCrapUninstaller/Forms/MainWindow.cs
@@ -1150,7 +1150,6 @@ private void UsageTrackerSendData()
                 SetupAndShowLegendWindow();
                 // Needed in case main window starts maximized
                 _listLegendWindow.UpdatePosition(uninstallerObjectListView);
-                _listLegendWindow.Opacity = 1;
                 _listLegendWindow.Visible = _setMan.Selected.Settings.UninstallerListShowLegend;
 
                 new Thread(() =>