88 lines
2.3 KiB
C#
88 lines
2.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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using System.Drawing;
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using System.Windows.Forms;
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namespace BizHawk.MultiClient.GBtools
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{
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public partial class BmpView : Control
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{
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[Browsable(false)]
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public Bitmap bmp { get; private set; }
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bool scaled;
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public BmpView()
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{
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if (System.Diagnostics.Process.GetCurrentProcess().ProcessName == "devenv")
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{
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// in the designer
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//this.BackColor = Color.Black;
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SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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}
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else
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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SetStyle(ControlStyles.UserPaint, true);
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SetStyle(ControlStyles.DoubleBuffer, true);
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SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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SetStyle(ControlStyles.Opaque, true);
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this.BackColor = Color.Transparent;
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this.Paint += new PaintEventHandler(BmpView_Paint);
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this.SizeChanged += new EventHandler(BmpView_SizeChanged);
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ChangeBitmapSize(1, 1);
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}
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}
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void BmpView_SizeChanged(object sender, EventArgs e)
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{
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scaled = !(bmp.Width == Width && bmp.Height == Height);
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}
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void BmpView_Paint(object sender, PaintEventArgs e)
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{
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if (scaled)
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{
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e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
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e.Graphics.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.Half;
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e.Graphics.DrawImage(bmp, 0, 0, Width, Height);
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}
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else
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{
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e.Graphics.DrawImageUnscaled(bmp, 0, 0);
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}
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}
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public void ChangeBitmapSize(Size s)
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{
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ChangeBitmapSize(s.Width, s.Height);
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}
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public void ChangeBitmapSize(int w, int h)
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{
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if (bmp != null)
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{
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if (w == bmp.Width && h == bmp.Height)
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return;
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bmp.Dispose();
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}
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bmp = new Bitmap(w, h, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
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BmpView_SizeChanged(null, null);
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Refresh();
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}
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public void Clear()
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{
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var lockdata = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
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Win32.MemSet(lockdata.Scan0, 0xff, (uint)(lockdata.Height * lockdata.Stride));
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bmp.UnlockBits(lockdata);
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Refresh();
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}
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}
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}
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