1 files changed, 117 insertions, 0 deletions
diff --git a/src/interface/ScrollPanel.cpp b/src/interface/ScrollPanel.cpp
new file mode 100644
index 0000000..36ce5f8
--- /dev/null
+++ b/src/interface/ScrollPanel.cpp
@@ -0,0 +1,117 @@
+#include <iostream>
+#include "ScrollPanel.h"
+
+using namespace ui;
+
+ScrollPanel::ScrollPanel(Point position, Point size):
+	Panel(position, size),
+	maxOffset(0, 0),
+	offsetX(0),
+	offsetY(0),
+	yScrollVel(0.0f),
+	xScrollVel(0.0f),
+	scrollBarWidth(0)
+{
+
+}
+
+int ScrollPanel::GetScrollLimit()
+{
+	if(maxOffset.Y == -ViewportPosition.Y)
+		return 1;
+	else if(ViewportPosition.Y == 0)
+		return -1;
+	return 0;
+}
+
+void ScrollPanel::XOnMouseWheelInside(int localx, int localy, int d)
+{
+	if(!d)
+		return;
+	yScrollVel -= d;
+}
+
+void ScrollPanel::XDraw(const Point& screenPos)
+{
+	Graphics * g = ui::Engine::Ref().g;
+
+	//Vertical scroll bar
+	if(maxOffset.Y>0 && InnerSize.Y>0)
+	{
+		float scrollHeight = float(Size.Y)*(float(Size.Y)/float(InnerSize.Y));
+		float scrollPos = 0;
+		if(-ViewportPosition.Y>0)
+		{
+			scrollPos = float(Size.Y-scrollHeight)*(float(offsetY)/float(maxOffset.Y));
+		}
+
+		g->fillrect(screenPos.X+(Size.X-scrollBarWidth), screenPos.Y, scrollBarWidth, Size.Y, 255, 255, 255, 55);
+		g->fillrect(screenPos.X+(Size.X-scrollBarWidth), screenPos.Y+scrollPos, scrollBarWidth, scrollHeight, 255, 255, 255, 255);
+	}
+}
+
+void ScrollPanel::XTick(float dt)
+{
+	if(yScrollVel > 7.0f) yScrollVel = 7.0f;
+	if(yScrollVel < -7.0f) yScrollVel = -7.0f;
+	if(yScrollVel > -0.5f && yScrollVel < 0.5)
+		yScrollVel = 0;
+
+	if(xScrollVel > 7.0f) xScrollVel = 7.0f;
+	if(xScrollVel < -7.0f) xScrollVel = -7.0f;
+	if(xScrollVel > -0.5f && xScrollVel < 0.5)
+		xScrollVel = 0;
+
+	maxOffset = InnerSize-Size;
+
+	int oldOffsetY = offsetY;
+	offsetY += yScrollVel;
+	int oldOffsetX = offsetX;
+	offsetX += xScrollVel;
+
+	yScrollVel*=0.99f;
+	xScrollVel*=0.99f;
+
+	if(oldOffsetY!=int(offsetY))
+	{
+		if(offsetY<0)
+		{
+			offsetY = 0;
+			yScrollVel = 0;
+			//commentsBegin = true;
+			//commentsEnd = false;
+		}
+		else if(offsetY>maxOffset.Y)
+		{
+			offsetY = maxOffset.Y;
+			yScrollVel = 0;
+			//commentsEnd = true;
+			//commentsBegin = false;
+		}
+		else
+		{
+			//commentsEnd = false;
+			//commentsBegin = false;
+		}
+		ViewportPosition.Y = -offsetY;
+	}
+	else
+	{
+		if(offsetY<0)
+		{
+			offsetY = 0;
+			yScrollVel = 0;
+			ViewportPosition.Y = -offsetY;
+		}
+		else if(offsetY>maxOffset.Y)
+		{
+			offsetY = maxOffset.Y;
+			ViewportPosition.Y = -offsetY;
+		}
+	}
+
+	if(mouseInside && scrollBarWidth < 6)
+		scrollBarWidth++;
+	else if(!mouseInside && scrollBarWidth > 0)
+		scrollBarWidth--;
+}
+\ No newline at end of file