public static Bitmap RenderPage(IntPtr context, IntPtr document, IntPtr page, float zoomFactor)
{
MuPDFLibrary.Interop.Rectangle bound = MuPDFNativeApi.Native.BoundPage(document, page);
Matrix matrix = new Matrix();
IntPtr pix = IntPtr.Zero;
IntPtr device = IntPtr.Zero;
Dpi dpi = SystemResolutionHelper.GetCurrentDpi();
float zoomX = zoomFactor * (dpi.HDpi / SystemResolutionHelper.DEFAULT_DPI);
float zoomY = zoomFactor * (dpi.VDpi / SystemResolutionHelper.DEFAULT_DPI);
int width = (int)(zoomX * bound.Width);
int height = (int)(zoomY * bound.Height);
matrix.A = zoomX;
matrix.D = zoomY;
pix = MuPDFNativeApi.Native.NewPixmap(context, MuPDFNativeApi.Native.FindDeviceColorSpace(context, "DeviceRGB"), width, height);
MuPDFNativeApi.Native.ClearPixmap(context, pix, 0xFF);
device = MuPDFNativeApi.Native.NewDrawDevice(context, pix);
MuPDFNativeApi.Native.RunPage(document, page, device, matrix, IntPtr.Zero);
MuPDFNativeApi.Native.FreeDevice(device);
device = IntPtr.Zero;
Bitmap bitmap = new Bitmap(width, height, PixelFormat.Format24bppRgb);
BitmapData bitmapData = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, bitmap.PixelFormat);
unsafe {
byte *ptrSrc = (byte *)MuPDFNativeApi.Native.GetSamples(context, pix);
byte *ptrDest = (byte *)bitmapData.Scan0;
for (int y = 0; y < height; y++)
{
byte *pl = ptrDest;
byte *sl = ptrSrc;
for (int x = 0; x < width; x++)
{
pl[2] = sl[0];
pl[1] = sl[1];
pl[0] = sl[2];
pl += 3;
sl += 4;
}
ptrDest += bitmapData.Stride;
ptrSrc += 4 * width;
}
}
bitmap.UnlockBits(bitmapData);
MuPDFNativeApi.Native.DropPixmap(context, pix);
bitmap.SetResolution(dpi.HDpi, dpi.VDpi);
return(bitmap);
}
public static System.Windows.Size[] GetPageBounds(IPDFSource source, ImageRotation rotation = ImageRotation.NONE, string password = null)
{
using (PDFFileStream stream = new PDFFileStream(source)) {
ValidatePassword(stream.Document, password);
int pageSize = MuPDFNativeApi.Native.CountPages(stream.Document);
return(Enumerable.Range(0, pageSize - 1)
.Select(x => {
IntPtr ptr = IntPtr.Zero;
try {
ptr = MuPDFNativeApi.Native.LoadPage(stream.Document, x);
MuPDFLibrary.Interop.Rectangle bound = MuPDFNativeApi.Native.BoundPage(stream.Document, ptr);
return SizeCallback(rotation)(bound.Width, bound.Height);
} finally {
if (ptr != IntPtr.Zero)
{
MuPDFNativeApi.Native.FreePage(stream.Document, ptr);
}
}
}).ToArray());
}
}
