protected override void AddPageImpl(float width, float height)
{
if (_closed)
{
throw new Exception("Unable to add a page because the PDFContext is already closed.");
}
if (_data == null)
{
_data = new NSMutableData();
var consumer = new CGDataConsumer(_data);
_context = new CGContextPDF(consumer, CGRect.Empty, null);
_context.SetFillColorSpace(CGColorSpace.CreateDeviceRGB());
_context.SetStrokeColorSpace(CGColorSpace.CreateDeviceRGB());
}
if (_pageOpen)
{
_context.EndPage();
}
_context.BeginPage(new CGRect(0, 0, width, height));
_context.TranslateCTM(0, height);
_context.ScaleCTM(1, -1);
_context.SetLineWidth(1);
_context.SetFillColor(new CGColor(1, 1));
_context.SetStrokeColor(new CGColor(0, 1));
_pageOpen = true;
_canvas.Context = _context;
}
public void Create_DataConsumer_BadUTI()
{
using (NSMutableData destData = new NSMutableData())
using (var consumer = new CGDataConsumer(destData)) {
Assert.Null(CGImageDestination.Create(consumer, BadUti, 1), "Create-1");
Assert.Null(CGImageDestination.Create(consumer, BadUti, 1, new CGImageDestinationOptions()), "Create-2");
}
}
private static void Save(CGImage screenshot, string path)
{
var fileURL = new NSUrl(path, false);
using (var dataConsumer = new CGDataConsumer(fileURL))
{
var imageDestination = CGImageDestination.Create(dataConsumer, imageFormat, 1);
imageDestination.AddImage(screenshot);
imageDestination.Close();
}
}
public void Create_DataConsumer_GoodUTI()
{
using (NSMutableData destData = new NSMutableData())
using (var consumer = new CGDataConsumer(destData)) {
using (var id = CGImageDestination.Create(consumer, GoodUti, 1)) {
Assert.That(id.Handle, Is.Not.EqualTo(IntPtr.Zero), "handle-1");
}
using (var id = CGImageDestination.Create(consumer, GoodUti, 1, new CGImageDestinationOptions())) {
Assert.That(id.Handle, Is.Not.EqualTo(IntPtr.Zero), "handle-2");
}
}
}
public void ToDictionaryWithPermissions()
{
TestRuntime.AssertXcodeVersion(9, 0);
var filename = Environment.GetFolderPath(Environment.SpecialFolder.CommonDocuments) + "/t.pdf";
var info = GetInfo();
info.AccessPermissions = CGPDFAccessPermissions.AllowsContentCopying;
using (var url = new NSUrl(filename)) {
using (var ctx = new CGContextPDF(url, new CGRect(0, 0, 1000, 1000), info)) {
Assert.IsNotNull(ctx, "1");
}
using (var consumer = new CGDataConsumer(url)) {
using (var ctx = new CGContextPDF(consumer, new CGRect(0, 0, 1000, 1000), info)) {
Assert.IsNotNull(ctx, "2");
}
}
}
}
public static CGImageDestination?Create(CGDataConsumer consumer, string typeIdentifier, int imageCount, CGImageDestinationOptions?options = null)
{
if (consumer is null)
{
throw new ArgumentNullException(nameof(consumer));
}
if (typeIdentifier is null)
{
throw new ArgumentNullException(nameof(typeIdentifier));
}
using var dict = options?.ToDictionary();
var typeId = CFString.CreateNative(typeIdentifier);
try {
IntPtr p = CGImageDestinationCreateWithDataConsumer(consumer.Handle, typeId, imageCount, dict.GetHandle());
return(p == IntPtr.Zero ? null : new CGImageDestination(p, true));
} finally {
CFString.ReleaseNative(typeId);
}
}
/// <summary>
/// Exports the image as a PDF with the given file name.
/// </summary>
/// <param name="filename">Filename.</param>
public static void ExportAsPDF(this UIImage image, string filename, CGPDFInfo info, double horizRes = 96, double vertRes = 96)
{
var width = (double)image.Size.Width * (double)image.CurrentScale * 72 * horizRes;
var height = (double)image.Size.Height * (double)image.CurrentScale * 72 * vertRes;
var pdfFile = new NSMutableData();
pdfFile.Init();
var pdfConsumer = new CGDataConsumer(pdfFile);
var mediaBox = new CGRect(0, 0, width, height);
using (var context = new CGContextPDF(pdfConsumer, mediaBox, info)) {
context.BeginPage(new CGPDFPageInfo());
context.DrawImage(mediaBox, image.CGImage);
context.EndPage();
}
var attrs = new NSFileAttributes();
NSFileManager.DefaultManager.CreateFile(filename, pdfFile, attrs);
}
public static CGImageDestination Create(CGDataConsumer consumer, string typeIdentifier, int imageCount, CGImageDestinationOptions options = null)
{
if (consumer == null)
{
throw new ArgumentNullException("consumer");
}
if (typeIdentifier == null)
{
throw new ArgumentNullException("typeIdentifier");
}
var dict = options == null ? null : options.ToDictionary();
var typeId = NSString.CreateNative(typeIdentifier);
IntPtr p = CGImageDestinationCreateWithDataConsumer(consumer.Handle, typeId, imageCount, dict == null ? IntPtr.Zero : dict.Handle);
NSString.ReleaseNative(typeId);
var ret = p == IntPtr.Zero ? null : new CGImageDestination(p, true);
if (dict != null)
{
dict.Dispose();
}
return(ret);
}
