Function imguiEndScrollArea

demo/imgui.cpp:376–446

}

void imguiEndScrollArea()
{
	// Disable scissoring.
	addGfxCmdScissor(-1,-1,-1,-1);

	// Draw scroll bar
	int x = g_scrollRight+SCROLL_AREA_PADDING/2;
	int y = g_scrollBottom;
	int w = SCROLL_AREA_PADDING*2;
	int h = g_scrollTop - g_scrollBottom;

	int stop = g_scrollAreaTop;
	int sbot = g_state.widgetY;
	int sh = stop - sbot; // The scrollable area height.

	float barHeight = (float)h/(float)sh;
	
	if (barHeight < 1)
	{
		float barY = (float)(y - sbot)/(float)sh;
		if (barY < 0) barY = 0;
		if (barY > 1) barY = 1;
		
		// Handle scroll bar logic.
		unsigned int hid = g_scrollId;
		int hx = x;
		int hy = y + (int)(barY*h);
		int hw = w;
		int hh = (int)(barHeight*h);
		
		const int range = h - (hh-1);
		bool over = inRect(hx, hy, hw, hh);
		buttonLogic(hid, over);
		if (isActive(hid))
		{
			float u = (float)(hy-y) / (float)range;
			if (g_state.wentActive)
			{
				g_state.dragY = g_state.my;
				g_state.dragOrig = u;
			}
			if (g_state.dragY != g_state.my)
			{
				u = g_state.dragOrig + (g_state.my - g_state.dragY) / (float)range;
				if (u < 0) u = 0;
				if (u > 1) u = 1;
				*g_scrollVal = (int)((1-u) * (sh - h));
			}
		}
		
		// BG
		addGfxCmdRoundedRect((float)x, (float)y, (float)w, (float)h, (float)w/2-1, imguiRGBA(0,0,0,196));
		// Bar
		if (isActive(hid))
			addGfxCmdRoundedRect((float)hx, (float)hy, (float)hw, (float)hh, (float)w/2-1, imguiRGBA(255,196,0,196));
		else
			addGfxCmdRoundedRect((float)hx, (float)hy, (float)hw, (float)hh, (float)w/2-1, isHot(hid) ? imguiRGBA(255,196,0,96) : imguiRGBA(255,255,255,64));