private void bWorker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e) //background worker method
{
numOfImages = baseImages.Count; //update number of images
threads = new Thread[numOfThreads]; //define threads
int numOfIterations = numOfImages / poolSize; //number of iterations
failed = 0; //reset failed number
counter = 0; //reset counter
for (int i = 0; i < numOfIterations + 1; i++)
{
BitmapJob bitJob; //job var
Bitmap baseBit; //base bitmap var
Bitmap transparentBit; //transparent bitmap var
finishedThreads = 0; //reset finished threads
stopwatch2.Reset();
stopwatch2.Start();
for (int j = i * poolSize; j < (i + 1) * poolSize && j < numOfImages; j++) //read "poolsize" images
{
baseBit = new Bitmap(baseImages[j]); //read base image
transparentBit = new Bitmap(transparentImages[rand.Next(0, transparentImages.Count)]); // read transparent image
bitJob = new BitmapJob(baseBit, transparentBit, false); //construct job
bitmapJobPool.Add(bitJob); //add to job pool
}
for (int j = 0; j < numOfThreads; j++) //start generating in threads
{
threads[j] = new Thread(new ThreadStart(getJobsDone)); //initialise threads
threads[j].Start(); //start threads
}
while (finishedThreads != numOfThreads || checkJobStatus()) //if threads no finished or jobs arent done
{
if (!bWorker.CancellationPending)
{
Thread.SpinWait(1);
}
else
{
break;
}
if (stopwatch2.Elapsed.TotalSeconds > 15)
{
bitmapJobPool.Clear(); //clear job pool
outputBitmaps.Clear(); //clear generated bitmaps
GC.WaitForPendingFinalizers();
GC.Collect(); //clear memory
bWorker.CancelAsync();
}
}
for (int j = 0; j < outputBitmaps.Count; j++) //for the generated number of bitmaps
{
try
{
switch (selectedExtensionIndex) //switch for export type
{
case 0: //jpeg
{
String outpath = outPath + "\\" + fileName + lastIndex + selectedExtension.ToString();
outputBitmaps[j].Save(outpath, ImageFormat.Jpeg);
break;
}
case 1: //png
{
String outpath = outPath + "\\" + fileName + lastIndex + selectedExtension.ToString();
outputBitmaps[j].Save(outpath, ImageFormat.Png);
break;
}
case 2: //gif
{
String outpath = outPath + "\\" + fileName + lastIndex + selectedExtension.ToString();
outputBitmaps[j].Save(outpath, ImageFormat.Gif);
break;
}
case 3: //bmp
{
String outpath = outPath + "\\" + fileName + lastIndex + selectedExtension.ToString();
outputBitmaps[j].Save(outpath, ImageFormat.Bmp);
break;
}
case 4: //tiff
{
String outpath = outPath + "\\" + fileName + lastIndex + selectedExtension.ToString();
outputBitmaps[j].Save(outpath, ImageFormat.Tiff);
break;
}
default:
break;
}
counter++; //increment counter
lastIndex++; //increment last index
int percent = (int)((float)(counter + failed) / (float)numOfImages * 100);
bWorker.ReportProgress(percent);
}
catch
{
failed++; //increment failed
}
if (bWorker.CancellationPending)
{
bitmapJobPool.Clear(); //clear job pool
outputBitmaps.Clear(); //clear generated bitmaps
GC.WaitForPendingFinalizers();
GC.Collect(); //clear memory
e.Cancel = true;
return;
}
}
bitmapJobPool.Clear(); //clear job pool
outputBitmaps.Clear(); //clear generated bitmaps
GC.WaitForPendingFinalizers();
GC.Collect(); //clear memory
}
}
void getJobsDone() //do jobs method
{
while (checkJobStatus()) //if there are jobs
{
BitmapJob job = getJob(); //get a job
if (job == null) //if null exit thread
{
return;
}
Bitmap output = new Bitmap(job.baseBitmap.Width, job.baseBitmap.Height); //initialise output
int tcenterx = job.transparentBitmap.Width / 2; //find the center x of transparent
int tcentery = job.transparentBitmap.Height / 2; //find the center y of thransparent
Graphics outputgraphics = Graphics.FromImage(output); //get output graphics
ColorMatrix matrix = new ColorMatrix(); //define new color matrix
matrix.Matrix33 = ((float)opacity) / 100f; //set matrix opacity
ImageAttributes attributes = new ImageAttributes(); //define new attribute to attach to bitmap
attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap); //set the attribute values
outputgraphics.CompositingMode = CompositingMode.SourceOver; //set composition mode for graphics
outputgraphics.DrawImage(job.baseBitmap, 0, 0); //draw image on output
outputgraphics.DrawImage(
job.transparentBitmap,
new Rectangle(
rand.Next(0, job.baseBitmap.Width) - tcenterx,
rand.Next(0, job.baseBitmap.Height) - tcentery,
job.transparentBitmap.Width,
job.transparentBitmap.Height),
0,
0,
job.transparentBitmap.Width,
job.transparentBitmap.Height,
GraphicsUnit.Pixel,
attributes); //draw transparent image on output with created attribute
StringFormat drawFormat = new StringFormat(); //define string format
drawFormat.Alignment = StringAlignment.Center; //define alignment
outputgraphics.DrawString(
wordLines[rand.Next(0, wordLines.Length)],
fontSelector.Font,
new SolidBrush(brushColor),
job.baseBitmap.Width / 2 - fontSelector.Font.Size / 2,
job.baseBitmap.Height / 2 - fontSelector.Font.Size / 2,
drawFormat);
//draw string in the middle of the screen
outputBitmaps.Add(output); //add output to generated bitmaps
//drawFormat.Dispose();
//outputgraphics.Dispose();
//attributes.Dispose();
if (bWorker.CancellationPending)
{
return;
}
}
finishedThreads++; //finish thread
}
