Hi,
I have a problem drawing downloaded png's on a context in a OwnerDrawn
Element from MonoTouch.Dialog
Every "§$%&/()= image will be drawn rotated and i don't know why.. Showing
the image in a webview displays them correct.
public class SampleOwnerDrawnElement : OwnerDrawnElement
{
public string imagefile;
UIImage XY;
int maxWidth = (int)(UIScreen.MainScreen.Bounds.Width-10);
int maxHeight = (int)(UIScreen.MainScreen.Bounds.Width);
int imgWidth = 0;
int imgHeight = 0;
public override float Height (RectangleF bounds)
{
return imgHeight / UIScreen.MainScreen.Scale ;
}
public SampleOwnerDrawnElement (System.Json.JsonValue JS) :
base(UITableViewCellStyle.Default, "sampleOwnerDrawnElement")
{
string text = (string)JS ["link"];
string url = BASEURL + (string)JS ["img1"] + ".png";
int width = JS ["img1data"] ["0"];
int height = JS ["img1data"] ["1"];
var cur_width = width;
double ratio = (int)(maxWidth * UIScreen.MainScreen.Scale) /
(cur_width*UIScreen.MainScreen.Scale);
imgHeight = (int)(((int)(height*UIScreen.MainScreen.Scale)) * ratio);
imgWidth = (int)(maxWidth * UIScreen.MainScreen.Scale);
maxHeight = (int)(imgHeight / UIScreen.MainScreen.Scale);
if (!(System.IO.File.Exists (System.Environment.GetFolderPath
(System.Environment.SpecialFolder.MyDocuments)+ "/news/" +
System.IO.Path.GetFileName (url)))) {
System.Net.WebClient WLL = new System.Net.WebClient();
WLL.DownloadFileCompleted += delegate(object sender,
System.ComponentModel.AsyncCompletedEventArgs e) {
XY = UIImage.FromFile (System.Environment.GetFolderPath
(System.Environment.SpecialFolder.MyDocuments)+ "/news/" +
System.IO.Path.GetFileName (url));
} ;
WLL.DownloadFileAsync(new Uri(url),System.Environment.GetFolderPath
(System.Environment.SpecialFolder.MyDocuments)+ "/news/" +
System.IO.Path.GetFileName (url));
} else {
XY = UIImage.FromFile (System.Environment.GetFolderPath
(System.Environment.SpecialFolder.MyDocuments)+ "/news/" +
System.IO.Path.GetFileName (url));
}
this.Text = text;
}
public string Text
{
get;set;
}
public override void Draw (RectangleF bounds, CGContext context, UIView
view)
{
UIColor color = UIColor.FromPatternImage (UIImage.FromBundle
("images/back.png"));
color.SetFill ();
context.FillRect (bounds);
bounds = new RectangleF (5, 5, maxWidth,maxHeight);
UIColor.White.SetFill ();
context.FillRect (bounds);
int aXBound = 0;
if (!( XY==null) ) {
UIImage x;
if(XY.CGImage.Width<=maxWidth) {
x=XY;
aXBound = (int)((maxWidth/2) - (XY.CGImage.Width/2));
} else {
ImageResizer mX = new ImageResizer(XY);
mX.RatioResizeToWidth(maxWidth*UIScreen.MainScreen.Scale);
x=mX.ModifiedImage;
}
context.DrawImage(new
RectangleF(5+aXBound,5,x.CGImage.Width/UIScreen.MainScreen.Scale,x.CGImage.H
eight/UIScreen.MainScreen.Scale),x.CGImage);
}
UIColor.FromRGBA (0,0,0,215).SetFill ();
context.FillRect (new RectangleF(6,maxHeight-39,maxWidth-2,38));
UIColor.White.SetColor();
view.DrawString(this.Text, new RectangleF(10,maxHeight-35,maxWidth,40),
UIFont.BoldSystemFontOfSize(14.0f), UILineBreakMode.TailTruncation);
}
}
XY is an UIImage that will be downloaded when the element is created (if
it's not already downloaded and stored locally, the cell is just white with
a small black box containing the product-name)
Thanks in advance,
Benedikt
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