public void SelectBitmap(Bitmap bitmap)
{
if (bitmap.PixelFormat != PixelFormat.Format32bppArgb)
{
throw new ApplicationException("The bitmap must be 32bpp with alpha-channel.");
}
IntPtr screenDc = APIHelp.GetDC(IntPtr.Zero);
IntPtr memDc = APIHelp.CreateCompatibleDC(screenDc);
IntPtr hBitmap = IntPtr.Zero;
IntPtr hOldBitmap = IntPtr.Zero;
try {
hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
hOldBitmap = APIHelp.SelectObject(memDc, hBitmap);
APIHelp.Size newSize = new APIHelp.Size(bitmap.Width, bitmap.Height);
APIHelp.Point sourceLocation = new APIHelp.Point(0, 0);
APIHelp.Point newLocation = new APIHelp.Point(this.Left, this.Top);
APIHelp.BLENDFUNCTION blend = new APIHelp.BLENDFUNCTION {
BlendOp = APIHelp.AC_SRC_OVER,
BlendFlags = 0,
SourceConstantAlpha = 255,
AlphaFormat = APIHelp.AC_SRC_ALPHA
};
APIHelp.UpdateLayeredWindow(Handle, screenDc, ref newLocation, ref newSize, memDc, ref sourceLocation, 0, ref blend, APIHelp.ULW_ALPHA);
} finally {
APIHelp.ReleaseDC(IntPtr.Zero, screenDc);
if (hBitmap != IntPtr.Zero)
{
APIHelp.SelectObject(memDc, hOldBitmap);
APIHelp.DeleteObject(hBitmap);
}
APIHelp.DeleteDC(memDc);
}
}
private void timer1_Tick(object sender, EventArgs e)
{
var c = Cursor.Position;
//Invalidate();
APIHelp.BLENDFUNCTION blend;
//Only works with a 32bpp bitmap
blend.BlendOp = APIHelp.AC_SRC_OVER;
//Always 0
blend.BlendFlags = 0;
//Set to 255 for per-pixel alpha values
blend.SourceConstantAlpha = 255;
//Only works when the bitmap contains an alpha channel
blend.AlphaFormat = APIHelp.AC_SRC_ALPHA;
IntPtr screenDc;
screenDc = APIHelp.GetDC(IntPtr.Zero);
shiftX = Magnifier.lastRect.left;
shiftY = Magnifier.lastRect.top;
using (Bitmap bmp = new Bitmap(this.Width, this.Height))
{
using (var gr = Graphics.FromImage(bmp))
{
gr.Clear(Color.Transparent);
DoubleBuffered = true;
gr.FillRectangle(new SolidBrush(Color.FromArgb(128, Color.Red)), xx, 100, 200, 300);
gr.DrawRectangle(new Pen(Color.Yellow, 3), new Rectangle(shiftX, shiftY, Magnifier.lastRect.right - Magnifier.lastRect.left, Magnifier.lastRect.bottom - Magnifier.lastRect.top));
lock (Magnifier.lock1)
{
//gr.DrawImage(Magnifier.LastBmp, 0, 0);
//gr.DrawImage(grayer, 0, 0);
}
Rect[] detections = new Rect[0];
float[] oscores = new float[0];
int[] classes = new int[0];
lock (lock1)
{
if (last != null)
{
/*using (var bmp1 = new Bitmap(1920, 1080))
* {
* bmp1.MakeTransparent();
* using (var ggr = Graphics.FromImage(bmp1))
* {
* ggr.Clear(Color.FromArgb(64, Color.Red));
* e.Graphics.DrawImage(bmp1, 0, 0);
* }
* }*/
detections = last.Item1;
oscores = last.Item2;
classes = last.Item3;
}
}
int hi = -1;
float hconf = 0;
for (int i = 0; i < detections.Length; i++)
{
if (oscores[i] < visTresh)
{
continue;
}
int cls = 0;
if (classes != null)
{
cls = classes[i];
}
if (cls == 0)
{
if (oscores[i] > hconf)
{
hconf = oscores[i];
hi = i;
}
}
}
for (int i = 0; i < detections.Length; i++)
{
if (oscores[i] < visTresh)
{
continue;
}
Rects.Add(new RectLog()
{
Rect = detections[i], Shift = new OpenCvSharp.Point(shiftX, shiftY)
});
var text = Math.Round(oscores[i], 4).ToString();
int cls = -1;
if (classes != null)
{
cls = classes[i];
text += $"(cls: {cls})";
}
var cx = detections[i].X;
var cy = detections[i].Y + 12;
/* if (cls == 0 && hi == i)
* {
* gr.DrawRectangle(new Pen(Color.FromArgb(0, 255, 0), 3), detections[i].Left + shiftX, detections[i].Top + shiftY, detections[i].Width, detections[i].Height);
* if (FillRects)
* gr.FillRectangle(new SolidBrush(Color.FromArgb(0, 255, 0)), detections[i].Left + shiftX, detections[i].Top + shiftY, detections[i].Width, detections[i].Height);
* }
* else if (cls >= 2)
* {
* gr.DrawRectangle(new Pen(Color.FromArgb(255, 0, 255), 2), detections[i].Left + shiftX, detections[i].Top + shiftY, detections[i].Width, detections[i].Height);
* if (FillRects)
* gr.FillRectangle(new SolidBrush(Color.FromArgb(0, 255, 0)), detections[i].Left + shiftX, detections[i].Top + shiftY, detections[i].Width, detections[i].Height);
* }
* else
* {
* gr.DrawRectangle(new Pen(Color.FromArgb(255, 0, 0), 2), detections[i].Left + shiftX, detections[i].Top + shiftY, detections[i].Width, detections[i].Height);
* if (FillRects)
* gr.FillRectangle(new SolidBrush(Color.FromArgb(0, 255, 0)), detections[i].Left + shiftX, detections[i].Top + shiftY, detections[i].Width, detections[i].Height);
* }*/
//mat.Rectangle(new OpenCvSharp.Point(cx, cy + 5), new OpenCvSharp.Point(cx + 120, cy - 15), new Scalar(0, 0, 0), -1);
//mat.PutText(text, new OpenCvSharp.Point(cx, cy),
// HersheyFonts.HersheyDuplex, 0.5, new Scalar(255, 255, 255));
}
foreach (var item in Rects)
{
var shift = item.Shift;
item.Timestamp--;
gr.DrawRectangle(new Pen(Color.FromArgb(255, 0, 255), 2), item.Rect.Left + shift.X, item.Rect.Top + shift.Y, item.Rect.Width, item.Rect.Height);
if (FillRects)
{
gr.FillRectangle(new SolidBrush(Color.FromArgb(0, 255, 0)), item.Rect.Left + shift.X, item.Rect.Top + shift.Y, item.Rect.Width, item.Rect.Height);
}
}
if (UseHistory)
{
Rects.RemoveAll(z => z.Timestamp == 0);
}
else
{
Rects.Clear();
}
//using (bmp = (Bitmap)Bitmap.FromFile(@"C:\.......png")) //the image must be the same size as your form
{
memDc = APIHelp.CreateCompatibleDC(screenDc);
hBmp = bmp.GetHbitmap(Color.FromArgb(0));
hOldBmp = APIHelp.SelectObject(memDc, hBmp); //memDc is a device context that contains our image
}
}
}
APIHelp.DeleteDC(screenDc);
APIHelp.Size newSize;
APIHelp.Point newLocation;
APIHelp.Point sourceLocation;
newLocation.x = this.Location.X;
newLocation.y = this.Location.Y;
sourceLocation.x = 0;
sourceLocation.y = 0;
newSize.cx = this.Width;
newSize.cy = this.Height;
APIHelp.UpdateLayeredWindow(Handle, IntPtr.Zero, ref newLocation, ref newSize, memDc, ref sourceLocation,
0, ref blend, APIHelp.ULW_ALPHA);
APIHelp.DeleteDC(memDc);
APIHelp.DeleteObject(hBmp);
APIHelp.DeleteObject(hOldBmp);
}
