private void UpdateImage()
{
if (bmp.Handle != IntPtr.Zero) //以下代码将原始图像数据用来进行图像！
{
Win32Api.CopyMemory((IntPtr)bmp.Pointer, (IntPtr)DataCopy, bmp.Stride * bmp.Height);
}
switch (method)
{
case "Bin":
AdjustEffect.Bin(bmp, (int)trbValue.Value);
break;
case "Gama":
AdjustEffect.Gama(bmp, (int)trbValue.Value);
break;
case "FilmStyle":
AdjustEffect.FilmStyle(bmp, (int)trbValue.Value);
break;
}
Graphics G = canvas.CreateGraphics();
IntPtr Hdc = G.GetHdc();
bmp.DrawImage(Hdc, 0, 0, canvas.Width, canvas.Height, 0, 0, bmp.Width, bmp.Height);
G.ReleaseHdc();
G.Dispose();
canvas.Invalidate();
}
/// <summary>
/// Implements the Apply code for the Brightness Filet
/// </summary>
/// <param name="graphics"></param>
/// <param name="applyBitmap"></param>
/// <param name="rect"></param>
/// <param name="renderMode"></param>
public override void Apply(Graphics graphics, Bitmap applyBitmap, NativeRect rect, RenderMode renderMode)
{
var applyRect = BitmapHelper.CreateIntersectRectangle(applyBitmap.Size, rect, Invert);
if (applyRect.Width == 0 || applyRect.Height == 0)
{
// nothing to do
return;
}
var state = graphics.Save();
if (Invert)
{
graphics.SetClip(applyRect);
graphics.ExcludeClip(rect);
}
var brightness = GetFieldValueAsFloat(FieldType.BRIGHTNESS);
using (var ia = AdjustEffect.CreateAdjustAttributes(brightness, 1f, 1f))
{
graphics.DrawImage(applyBitmap, applyRect, applyRect.X, applyRect.Y, applyRect.Width, applyRect.Height, GraphicsUnit.Pixel, ia);
}
graphics.Restore(state);
}
private void EffectInvert_Click(object sender, EventArgs e)
{
Stopwatch Sw = new Stopwatch();
Sw.Start();
AdjustEffect.Invert(bmp);
Sw.Stop();
this.Text = Sw.ElapsedMilliseconds.ToString();
this.Canvas.Invalidate();
}
