From 94670aac43ddadf9ecc9f9265ce83d56e04e7ae7 Mon Sep 17 00:00:00 2001
From: Robin <robinperris@gmail.com>
Date: Sun, 5 Mar 2017 21:03:21 +0000
Subject: [PATCH] Scrollbars will now visually looked disabled.

Can now choose to have scrollbars always visible in scrollbase.
---
 DarkUI/Controls/DarkScrollBar.cs             |  41 +++++++++++--------
 DarkUI/Controls/DarkScrollBase.cs            |  25 ++++++++++-
 DarkUI/DarkUI.csproj                         |   3 ++
 DarkUI/Icons/ScrollIcons.Designer.cs         |  12 +++++-
 DarkUI/Icons/ScrollIcons.resx                |   3 ++
 DarkUI/Resources/scrollbar_disabled.png      | Bin 0 -> 15659 bytes
 Example/Forms/Docking/DockLayers.Designer.cs |   1 +
 7 files changed, 66 insertions(+), 19 deletions(-)
 create mode 100644 DarkUI/Resources/scrollbar_disabled.png

diff --git a/DarkUI/Controls/DarkScrollBar.cs b/DarkUI/Controls/DarkScrollBar.cs
index 4b9ab16..55d5a80 100644
--- a/DarkUI/Controls/DarkScrollBar.cs
+++ b/DarkUI/Controls/DarkScrollBar.cs
@@ -388,16 +388,8 @@ namespace DarkUI.Controls
 
         public void UpdateScrollBar()
         {
-            if (ViewSize >= Maximum)
-                return;
-
             var area = ClientRectangle;
 
-            // Cap to maximum value
-            var maximumValue = Maximum - ViewSize;
-            if (Value > maximumValue)
-                Value = maximumValue;
-
             // Arrow buttons
             if (_scrollOrientation == DarkScrollOrientation.Vertical)
             {
@@ -427,7 +419,15 @@ namespace DarkUI.Controls
         }
 
         private void UpdateThumb(bool forceRefresh = false)
-        {
+        { 
+            if (ViewSize >= Maximum)
+                return;
+
+            // Cap to maximum value
+            var maximumValue = Maximum - ViewSize;
+            if (Value > maximumValue)
+                Value = maximumValue;
+
             // Calculate size ratio
             _viewContentRatio = (float)ViewSize / (float)Maximum;
             var viewAreaSize = Maximum - ViewSize;
@@ -493,6 +493,9 @@ namespace DarkUI.Controls
             if (_upArrowClicked)
                 upIcon = ScrollIcons.scrollbar_arrow_clicked;
 
+            if (!Enabled)
+                upIcon = ScrollIcons.scrollbar_arrow_disabled;
+
             if (_scrollOrientation == DarkScrollOrientation.Vertical)
                 upIcon.RotateFlip(RotateFlipType.RotateNoneFlipY);
             else if (_scrollOrientation == DarkScrollOrientation.Horizontal)
@@ -508,6 +511,9 @@ namespace DarkUI.Controls
             if (_downArrowClicked)
                 downIcon = ScrollIcons.scrollbar_arrow_clicked;
 
+            if (!Enabled)
+                downIcon = ScrollIcons.scrollbar_arrow_disabled;
+
             if (_scrollOrientation == DarkScrollOrientation.Horizontal)
                 downIcon.RotateFlip(RotateFlipType.Rotate270FlipNone);
 
@@ -516,14 +522,17 @@ namespace DarkUI.Controls
                                 _downArrowArea.Top + (_downArrowArea.Height / 2) - (downIcon.Height / 2));
 
             // Draw thumb
-            var scrollColor = _thumbHot ? Colors.GreyHighlight : Colors.GreySelection;
-
-            if (_isScrolling)
-                scrollColor = Colors.ActiveControl;
-
-            using (var b = new SolidBrush(scrollColor))
+            if (Enabled)
             {
-                g.FillRectangle(b, _thumbArea);
+                var scrollColor = _thumbHot ? Colors.GreyHighlight : Colors.GreySelection;
+
+                if (_isScrolling)
+                    scrollColor = Colors.ActiveControl;
+
+                using (var b = new SolidBrush(scrollColor))
+                {
+                    g.FillRectangle(b, _thumbArea);
+                }
             }
         }
 
diff --git a/DarkUI/Controls/DarkScrollBase.cs b/DarkUI/Controls/DarkScrollBase.cs
index f0d56c1..46426ae 100644
--- a/DarkUI/Controls/DarkScrollBase.cs
+++ b/DarkUI/Controls/DarkScrollBase.cs
@@ -30,6 +30,8 @@ namespace DarkUI.Controls
         private int _maxDragChange = 0;
         private Timer _dragTimer;
 
+        private bool _hideScrollBars = true;
+
         #endregion
 
         #region Property Region
@@ -88,6 +90,19 @@ namespace DarkUI.Controls
         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
         public bool IsDragging { get; private set; }
 
+        [Category("Behavior")]
+        [Description("Determines whether scrollbars will remain visible when disabled.")]
+        [DefaultValue(true)]
+        public bool HideScrollBars
+        {
+            get { return _hideScrollBars; }
+            set
+            {
+                _hideScrollBars = value;
+                UpdateScrollBars();
+            }
+        }
+
         #endregion
 
         #region Constructor Region
@@ -159,8 +174,14 @@ namespace DarkUI.Controls
 
         private void SetScrollBarVisibility()
         {
-            _vScrollBar.Visible = _visibleSize.Height < ContentSize.Height;
-            _hScrollBar.Visible = _visibleSize.Width < ContentSize.Width;
+            _vScrollBar.Enabled = _visibleSize.Height < ContentSize.Height;
+            _hScrollBar.Enabled = _visibleSize.Width < ContentSize.Width;
+
+            if (_hideScrollBars)
+            {
+                _vScrollBar.Visible = _vScrollBar.Enabled;
+                _hScrollBar.Visible = _hScrollBar.Enabled;
+            }
         }
 
         private void SetVisibleSize()
diff --git a/DarkUI/DarkUI.csproj b/DarkUI/DarkUI.csproj
index 5d274ca..f4fcfc8 100644
--- a/DarkUI/DarkUI.csproj
+++ b/DarkUI/DarkUI.csproj
@@ -309,6 +309,9 @@
   <ItemGroup>
     <None Include="Resources\small_arrow.png" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="Resources\scrollbar_disabled.png" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/DarkUI/Icons/ScrollIcons.Designer.cs b/DarkUI/Icons/ScrollIcons.Designer.cs
index 1d297f4..73745cc 100644
--- a/DarkUI/Icons/ScrollIcons.Designer.cs
+++ b/DarkUI/Icons/ScrollIcons.Designer.cs
@@ -8,7 +8,7 @@
 // </auto-generated>
 //------------------------------------------------------------------------------
 
-namespace DarkUI.Icons {
+namespace DarkUI {
     using System;
     
     
@@ -80,6 +80,16 @@ namespace DarkUI.Icons {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap scrollbar_arrow_disabled {
+            get {
+                object obj = ResourceManager.GetObject("scrollbar_arrow_disabled", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized resource of type System.Drawing.Bitmap.
         /// </summary>
diff --git a/DarkUI/Icons/ScrollIcons.resx b/DarkUI/Icons/ScrollIcons.resx
index 8e8374b..b049c9a 100644
--- a/DarkUI/Icons/ScrollIcons.resx
+++ b/DarkUI/Icons/ScrollIcons.resx
@@ -124,6 +124,9 @@
   <data name="scrollbar_arrow_clicked" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\scrollbar_arrow_clicked.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="scrollbar_arrow_disabled" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\scrollbar_disabled.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
   <data name="scrollbar_arrow_hot" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\scrollbar_arrow_hot.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
diff --git a/DarkUI/Resources/scrollbar_disabled.png b/DarkUI/Resources/scrollbar_disabled.png
new file mode 100644
index 0000000000000000000000000000000000000000..d29f9772ba4f968ea0f37ac467bcdba0297c345c
GIT binary patch
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diff --git a/Example/Forms/Docking/DockLayers.Designer.cs b/Example/Forms/Docking/DockLayers.Designer.cs
index 169d9cc..446effc 100644
--- a/Example/Forms/Docking/DockLayers.Designer.cs
+++ b/Example/Forms/Docking/DockLayers.Designer.cs
@@ -38,6 +38,7 @@ namespace Example
             // lstLayers
             // 
             this.lstLayers.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.lstLayers.HideScrollBars = false;
             this.lstLayers.Location = new System.Drawing.Point(0, 51);
             this.lstLayers.Name = "lstLayers";
             this.lstLayers.ShowIcons = true;