resolve several bug in scrollbar

4 files changed, 14 insertions, 16 deletions

diff --git a/src/GraphicObjects/NumericControl.cs b/src/GraphicObjects/NumericControl.cs
index 3e35f102..409a200f 100644
--- a/src/GraphicObjects/NumericControl.cs
+++ b/src/GraphicObjects/NumericControl.cs
@@ -29,7 +29,8 @@ namespace Crow
 					return;
 
 				minValue = value;
-
+				NotifyValueChanged ("Minimum", minValue);
+				registerForGraphicUpdate ();
 			}
 		}
 		[XmlAttributeAttribute()][DefaultValue(100.0)]
@@ -41,7 +42,8 @@ namespace Crow
 					return;
 
 				maxValue = value;
-
+				NotifyValueChanged ("Maximum", maxValue);
+				registerForGraphicUpdate ();
 			}
 		}
 		[XmlAttributeAttribute()][DefaultValue(1.0)]
@@ -53,7 +55,8 @@ namespace Crow
 					return;
 
 				smallStep = value;
-
+				NotifyValueChanged ("SmallIncrement", smallStep);
+				registerForGraphicUpdate ();
 			}
 		}
 		[XmlAttributeAttribute()][DefaultValue(5.0)]
@@ -65,7 +68,8 @@ namespace Crow
 					return;
 
 				bigStep = value;
-
+				NotifyValueChanged ("LargeIncrement", bigStep);
+				registerForGraphicUpdate ();
 			}
 		}
 		[XmlAttributeAttribute()][DefaultValue(0)]
diff --git a/src/GraphicObjects/ScrollBar.cs b/src/GraphicObjects/ScrollBar.cs
index 9a598aba..3e095457 100644
--- a/src/GraphicObjects/ScrollBar.cs
+++ b/src/GraphicObjects/ScrollBar.cs
@@ -76,22 +76,17 @@ namespace Crow
 		}
 		public void onScrollBack (object sender, MouseButtonEventArgs e)
 		{
-			Scroll -= _slider.LargeIncrement;
+			Scroll -= 50;
 		}
 		public void onScrollForth (object sender, MouseButtonEventArgs e)
 		{
-			Scroll += _slider.LargeIncrement;
+			Scroll += 50;
 
 		}
 
 		public void onSliderValueChange(object sender, ValueChangeEventArgs e){
-			Scroll = Convert.ToDouble(e.NewValue);
-		}
-
-		public override void OnLayoutChanges (LayoutingType layoutType)
-		{
-			OpenTKGameWindow.currentWindow.CursorVisible = true;
-			base.OnLayoutChanges (layoutType);
+			if (e.MemberName == "Value")
+				Scroll = Convert.ToDouble(e.NewValue);
 		}
 	}
 }
diff --git a/src/GraphicObjects/Scroller.cs b/src/GraphicObjects/Scroller.cs
index 1171d8d9..b2a09db5 100644
--- a/src/GraphicObjects/Scroller.cs
+++ b/src/GraphicObjects/Scroller.cs
@@ -80,8 +80,8 @@ namespace Crow
 		public int MaximumScroll {
 			get {
 				return VerticalScrolling ? 
-					child == null ? 0 : Child.Slot.Height - ClientRectangle.Height :
-					Child.Slot.Width - ClientRectangle.Width;				
+					child == null ? 0 : Math.Max(Child.Slot.Height - ClientRectangle.Height,0) :
+					Math.Max(Child.Slot.Width - ClientRectangle.Width,0);
 			}
 		}
 
diff --git a/src/GraphicObjects/Slider.cs b/src/GraphicObjects/Slider.cs
index d0a56d9d..495683d2 100644
--- a/src/GraphicObjects/Slider.cs
+++ b/src/GraphicObjects/Slider.cs
@@ -86,7 +86,6 @@ namespace Crow
 				base.Maximum = value;
 				LargeIncrement = base.Maximum / 10.0;
 				SmallIncrement = LargeIncrement / 5.0;
-
 			}
 		}