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using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using ShiftOS.Engine;
using ShiftOS.Frontend.Desktop;
namespace ShiftOS.Frontend.GraphicsSubsystem
{
public static class UIManager
{
private static List<GUI.Control> topLevels = new List<GUI.Control>();
public static void DrawControls(GraphicsDevice graphics, SpriteBatch batch)
{
foreach (var ctrl in topLevels)
{
using(var bmp = new System.Drawing.Bitmap(ctrl.Width, ctrl.Height))
{
var gfx = System.Drawing.Graphics.FromImage(bmp);
ctrl.Paint(gfx);
//get the bits of the bitmap
var data = bmp.LockBits(new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
byte[] rgb = new byte[Math.Abs(data.Stride) * data.Height];
Marshal.Copy(data.Scan0, rgb, 0, rgb.Length);
bmp.UnlockBits(data);
var tex2 = new Texture2D(graphics, bmp.Width, bmp.Height);
tex2.SetData<byte>(rgb);
batch.Draw(tex2, new Rectangle(ctrl.X, ctrl.Y, ctrl.Width, ctrl.Height), Color.White);
}
}
}
public static void AddTopLevel(GUI.Control ctrl)
{
if (!topLevels.Contains(ctrl))
topLevels.Add(ctrl);
}
public static void ProcessMouseState(MouseState state)
{
foreach(var ctrl in topLevels)
{
if (ctrl.ProcessMouseState(state) == true)
break;
}
}
public static void DrawBackgroundLayer(GraphicsDevice graphics, SpriteBatch batch, int width, int height)
{
if (SkinEngine.LoadedSkin == null)
SkinEngine.Init();
graphics.Clear(SkinEngine.LoadedSkin.DesktopColor.ToMonoColor());
var desktopbg = SkinEngine.GetImage("desktopbackground");
if(desktopbg != null)
{
var tex2 = new Texture2D(graphics, desktopbg.Width, desktopbg.Height);
tex2.SetData<byte>(SkinEngine.LoadedSkin.DesktopBackgroundImage);
batch.Draw(tex2, new Rectangle(0, 0, width, height), Color.White);
}
}
public static Color ToMonoColor(this System.Drawing.Color color)
{
return new Color(color.R, color.G, color.B, color.A);
}
internal static void StopHandling(GUI.Control ctrl)
{
if (topLevels.Contains(ctrl))
topLevels.Remove(ctrl);
ctrl = null;
}
}
}
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