/* ----------------------------------------------------------------- */
///
/// GetBitmap
///
/// <summary>
/// Creates a new instance of the Bitmap class with the specified
/// arguments.
/// </summary>
///
/* ----------------------------------------------------------------- */
public static Bitmap GetBitmap(this RenderOption src, int width, int height)
{
var dest = new Bitmap(width, height, PixelFormat.Format32bppArgb);
src.DrawBackground(e => { using (var gs = Graphics.FromImage(dest)) gs.Clear(e); });
return(dest);
}
/* ----------------------------------------------------------------- */
///
/// DrawBackground
///
/// <summary>
/// Draws the background.
/// </summary>
///
/* ----------------------------------------------------------------- */
public static void DrawBackground(this RenderOption src, Action <Color> action)
{
if (src.Background != Color.Transparent)
{
action(src.Background);
}
}
/* ----------------------------------------------------------------- */
///
/// Render
///
/// <summary>
/// Executes the rendering with the specified arguments.
/// </summary>
///
/* ----------------------------------------------------------------- */
public static void Render(IntPtr core, Graphics dest,
Page page, PointF point, SizeF size,
RenderOption options) => Load(core, page.Number, hp =>
{
options.DrawBackground(e => dest.Clear(e));
var x = (int)point.X;
var y = (int)point.Y;
var width = (int)size.Width;
var height = (int)size.Height;
var degree = GetRotation(page.Delta);
var flags = options.GetFlags();
var hdc = dest.GetHdc();
NativeMethods.FPDF_RenderPage(hdc, hp, x, y, width, height, degree, flags);
dest.ReleaseHdc(hdc);
return(true);
});
/* ----------------------------------------------------------------- */
///
/// Render
///
/// <summary>
/// Executes the rendering with the specified arguments.
/// </summary>
///
/* ----------------------------------------------------------------- */
public static Image Render(IntPtr core, Page page, SizeF size,
RenderOption options) => Load(core, page.Number, hp =>
{
var width = (int)size.Width;
var height = (int)size.Height;
var degree = GetRotation(page.Delta);
var flags = options.GetFlags();
var bpp = 4;
var dest = options.GetBitmap(width, height);
var data = dest.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, dest.PixelFormat);
var hbm = NativeMethods.FPDFBitmap_CreateEx(width, height, bpp, data.Scan0, width * bpp);
NativeMethods.FPDF_RenderPageBitmap(hbm, hp, 0, 0, width, height, degree, flags);
NativeMethods.FPDFBitmap_Destroy(hbm);
dest.UnlockBits(data);
return(dest);
});
/* ----------------------------------------------------------------- */
///
/// GetFlags
///
/// <summary>
/// Gets the flags from the specified option.
/// </summary>
///
/* ----------------------------------------------------------------- */
public static int GetFlags(this RenderOption src)
{
var dest = RenderFlags.Empty;
if (src.Annotation)
{
dest |= RenderFlags.Annotation;
}
if (src.Grayscale)
{
dest |= RenderFlags.Grayscale;
}
if (src.Print)
{
dest |= RenderFlags.Printng;
}
if (!src.AntiAlias)
{
dest |= RenderFlags.NoSmoothText | RenderFlags.NoSmoothImage | RenderFlags.NoSmoothPath;
}
return((int)dest);
}
