private void DrawGrid(WriteableBitmap writeableBitmap)
{
System.Windows.Media.Color color = Colors.White;
color.A = 50;
if (OverlayActivated)
{
if ((SelectedOverlay != null && File.Exists(SelectedOverlay)) || OverlayUseLastCaptured)
{
if (OverlayUseLastCaptured)
{
if (File.Exists(ServiceProvider.Settings.SelectedBitmap.FileItem.LargeThumb) &&
_lastOverlay != ServiceProvider.Settings.SelectedBitmap.FileItem.LargeThumb)
{
_lastOverlay = ServiceProvider.Settings.SelectedBitmap.FileItem.LargeThumb;
_overlayImage = null;
}
}
if (_overlayImage == null)
{
BitmapImage bitmapSource = new BitmapImage();
bitmapSource.DecodePixelWidth = writeableBitmap.PixelWidth;
bitmapSource.BeginInit();
bitmapSource.UriSource = new Uri(OverlayUseLastCaptured ? _lastOverlay : SelectedOverlay);
bitmapSource.EndInit();
_overlayImage = BitmapFactory.ConvertToPbgra32Format(bitmapSource);
_overlayImage.Freeze();
}
int x = writeableBitmap.PixelWidth*OverlayScale/100;
int y = writeableBitmap.PixelHeight*OverlayScale/100;
int xx = writeableBitmap.PixelWidth*OverlayHorizontal/100;
int yy = writeableBitmap.PixelWidth*OverlayVertical/100;
System.Windows.Media.Color transpColor = Colors.White;
//set color transparency for blit only the alpha chanel is used from transpColor
if (OverlayTransparency < 100)
transpColor = System.Windows.Media.Color.FromArgb((byte) (0xff*OverlayTransparency/100d), 0xff, 0xff, 0xff);
writeableBitmap.Blit(
new Rect(0 + (x / 2) + xx, 0 + (y / 2) + yy, writeableBitmap.PixelWidth - x,
writeableBitmap.PixelHeight - y),
_overlayImage,
new Rect(0, 0, _overlayImage.PixelWidth, _overlayImage.PixelHeight), transpColor,
WriteableBitmapExtensions.BlendMode.Alpha);
}
}
switch (GridType)
{
case 1:
{
for (int i = 1; i < 3; i++)
{
writeableBitmap.DrawLine(0, (int)((writeableBitmap.Height / 3) * i),
(int)writeableBitmap.Width,
(int)((writeableBitmap.Height / 3) * i), color);
writeableBitmap.DrawLine((int)((writeableBitmap.Width / 3) * i), 0,
(int)((writeableBitmap.Width / 3) * i),
(int)writeableBitmap.Height, color);
}
writeableBitmap.SetPixel((int)(writeableBitmap.Width / 2), (int)(writeableBitmap.Height / 2), 128,
Colors.Red);
}
break;
case 2:
{
for (int i = 1; i < 10; i++)
{
writeableBitmap.DrawLine(0, (int)((writeableBitmap.Height / 10) * i),
(int)writeableBitmap.Width,
(int)((writeableBitmap.Height / 10) * i), color);
writeableBitmap.DrawLine((int)((writeableBitmap.Width / 10) * i), 0,
(int)((writeableBitmap.Width / 10) * i),
(int)writeableBitmap.Height, color);
}
writeableBitmap.SetPixel((int)(writeableBitmap.Width / 2), (int)(writeableBitmap.Height / 2), 128,
Colors.Red);
}
break;
case 3:
{
writeableBitmap.DrawLineDDA(0, 0, (int)writeableBitmap.Width,
(int)writeableBitmap.Height, color);
writeableBitmap.DrawLineDDA(0, (int)writeableBitmap.Height,
(int)writeableBitmap.Width, 0, color);
writeableBitmap.SetPixel((int)(writeableBitmap.Width / 2), (int)(writeableBitmap.Height / 2), 128,
Colors.Red);
}
break;
case 4:
{
writeableBitmap.DrawLineDDA(0, (int)(writeableBitmap.Height / 2), (int)writeableBitmap.Width,
(int)(writeableBitmap.Height / 2), color);
writeableBitmap.DrawLineDDA((int)(writeableBitmap.Width / 2), 0,
(int)(writeableBitmap.Width / 2), (int)writeableBitmap.Height, color);
writeableBitmap.SetPixel((int)(writeableBitmap.Width / 2), (int)(writeableBitmap.Height / 2), 128,
Colors.Red);
}
break;
default:
break;
}
if (ShowRuler && NoSettingArea)
{
int x1 = writeableBitmap.PixelWidth * (HorizontalMin) / 1000;
int x2 = writeableBitmap.PixelWidth * (HorizontalMin+HorizontalMax) / 1000;
int y2 = writeableBitmap.PixelHeight * (VerticalMin+VerticalMax) / 1000;
int y1 = writeableBitmap.PixelHeight * VerticalMin / 1000;
writeableBitmap.FillRectangle2(0, 0, writeableBitmap.PixelWidth, writeableBitmap.PixelHeight, System.Windows.Media.Color.FromArgb(128, 128, 128, 128));
writeableBitmap.FillRectangleDeBlend(x1, y1, x2, y2, System.Windows.Media.Color.FromArgb(128, 128, 128, 128));
writeableBitmap.DrawRectangle(x1, y1, x2, y2, color);
}
}
private void DrawGrid(WriteableBitmap writeableBitmap)
{
Color color = Colors.White;
color.A = 50;
if (ShowRuler && NoSettingArea)
{
int x1 = writeableBitmap.PixelWidth * (HorizontalMin) / 1000;
int x2 = writeableBitmap.PixelWidth * (HorizontalMin + HorizontalMax) / 1000;
int y2 = writeableBitmap.PixelHeight * (VerticalMin + VerticalMax) / 1000;
int y1 = writeableBitmap.PixelHeight * VerticalMin / 1000;
writeableBitmap.FillRectangle2(0, 0, writeableBitmap.PixelWidth, writeableBitmap.PixelHeight, Color.FromArgb(128, 128, 128, 128));
writeableBitmap.FillRectangleDeBlend(x1, y1, x2, y2, Color.FromArgb(128, 128, 128, 128));
writeableBitmap.DrawRectangle(x1, y1, x2, y2, color);
}
}
