iphone - Create new UIImage by adding shadow to existing UIImage -

-

I have taken a look at this question:

but did not work for accepted answers.

What am I trying to do is taking a UIImage and putting shadows in it, then a new new UI, shadow and all come back.

Trying:

- (UIImage *) Image Shadow {CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB (); CGContextRef shadowContext = CGBitmapContextCreate (NULL, self.size.width, self.size.height + 1, CGImageGetBitsPerComponent (auto.cnmage), 0, color touch, kCGImageAlphaPremultipliedLast); CGColorSpaceRelease (colourspace); CGContextSetShadow (Shadow Contact, CGSizeMake (0, -1), 1); CGContextDrawImage (Shadow Context, CGRactMake (0, 0, Self Skies.Wedth, Spie. Size.height), Self. CGImage); CGImageRef shadowedCGImage = CGBitmapContextCreateImage (ShadowContext); CGContextRelease (shadowContext); UIImage * Shaded Image = [UIImage imageWithCGImage: shadowedCGImage]; CGImageRelease (shadowedCGImage); Return shadowed image; }

The result is that before I keep it through this method, I get the same image in the same way.

Am I doing this correctly, or is it something I'm clearly missing?

There are several problems with your code:

  • Target image too small Make sure there is enough space to attract the shadow.
  • Consider using CGContextSetShadowWithColor to define both the shadow and its color.
  • is flipped, so the original is bottom-left, not top-left.

By fixing these issues, the shadra should be drawn. 

  - (UIImage *) Imagewindows {CGColorSpaceRef color space = CGColorSpaceCreateDeviceRGB (); CGContextRef shadowContext = CGBitmapContextCreate (NULL, self.size.width + 10, self.size.height + 10, CGImageGetBitsPerComponent (auto.cnmage), 0, colorspace, kCGImageAlphaPremultipliedLast); CGColorSpaceRelease (colourspace); CGContextSetShadowWithColor (Shadow Contact, CGSizeMake (5, -5), 5, [UIColor blackColor] .CGColor); CGContextDrawImage (Shadow Context, CGRactMake (0, 10, Self Skies.With, Self Size.,), Self. CGImage); CGImageRef shadowedCGImage = CGBitmapContextCreateImage (ShadowContext); CGContextRelease (shadowContext); UIImage * Shaded Image = [UIImage imageWithCGImage: shadowedCGImage]; CGImageRelease (shadowedCGImage); Return shadowed image; }

Comments

Post a Comment

Popular posts from this blog

import - Python ImportError: No module named wmi -

-
I followed the instructions for downloading WMI for Python When I try to run the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = wmi.WMI (): if Raw_input ("restart% s?"% S.Caption) .upper () == "Y": s.StartService () I got the error traceback (most recent call end): file ". \", Line 1, edit: I am using Python 2.7.6 EDIT2: I am running 64-bit Windows 2008 R2, and I've downloaded WMI-1.4.9.zip (md5). I removed the content and put it in D: Python \ Tools \ Scripts I executed dragon setup.py.install I said D : \ Python \ tools \ scripts to% PATH% and when I execute the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = Wmi.WMI (): If raw_input ("Restart% s?"% S. Caption). () == "Y": s.StartService () error me Gets traceback (most recent call final): File ". See \", line 1, & lt; Modu...
Read more

Editing Python Class in Shell and SQLAlchemy -

-
I am working on the terminal on a shell script after this tutorial SQLAlchemy tutorial. I need to type gt; & Gt; & Gt; Sqlalchemy import column, integer, string & gt; & Gt; & Gt; Class user (base): __tablename__ = 'users' id = column (integer, primary_key = true) name = column (string) absolute name = column (string) password = column (string) def __repr __ (self): return "& lt ; User (name = '% s', absolute name = '% s', password = '% s') & gt; "% (Self.name, self.fullname, self.password) After the problem I have typed the password = column (string) I hit twice and changed .... >> I then took everything back but then an error was thrown because the class already exists ... I am not completely sure how to fix it. How do I open that slip in the shell script and edit it (Add DF to DRR) The error thrown below: / user / giripeters / TFSQLLX / Lib / python2.7 / site-packages / sqlalchemy / ext / decla...
Read more

lua - HowTo create a fuel bar -

-
I would like to create a fuel bar (empty with full tank). When the user touches the screen, the fuel once Dairejh these is my code: lifeBar = display.newImage ( "fuel_bar1.png") lifeBar.anchorX = 0 lifeboats. ======================== Lifetime Y = 37 screens Group: The Insert function (called Laifbar) However, I fuel Kansmoshn (equivalent to "pressed" variable to reduce the fuel tank "true") Have used. When pressed == is true, it means that the user is touching the screen: processed (fuel) processed () if life & gt; 0 and pressed == true remains = life - life 1 Life = life =. Wide-1 remains Value.text = string.format ("% d", life) End of this This function is active as the entrance event: runtime: addEventListener ( "Antrfrem" fuel Snsadna) it is very well, but my question is: pressed variable each time 5 seconds (once = = True) How is it possible to reduce the vitality width? I tried to add it to my touch even...
Read more