From: Eduard Bondarenko <edbond@...>
Date: 2008-04-01T17:35:31+09:00
Subject: Re: metrics rmagick problem

ImageMagick 6.4.0 03/28/08 Q16
rmagick (2.3.0)
Rails 2.0.2

I guess I found a problem.
When I change Image.read to Image.new
with the same dimensions text written at the
desired location.

SOLUTION (possible):
image.page was not right.
public/print_images/bc5085fc45bb5697aec6e181e33ebe78.png PNG 535x535 
768x768+177+79 DirectClass 16-bit 68kb
width=768, height=768, x=177, y=79
width=535, height=535, x=0, y=0

I assign image.page to new Rectangle.
Is there any better solution?

Thanks a lot Tim!

Tim Hunter wrote:
> Eduard Bondarenko wrote:
>> annotate give the same result.
>>
> 
> Sorry this is so much trouble.
> 
> Try this. For me, this exactly centers the word "RMagick" on the image.
> I'm using ImageMagick 6.4.0 and RMagick 2.3.0, but I would expect this
> to work with any relatively recent version of ImageMagick and RMagick.
> If it doesn't work for you, please open a support request on the RMagick
> project on RubyForge, let me know what versions of ImageMagick and
> RMagick you're using, include a simple reproduction of your problem and
> attach the output image you get.
> 
> require 'RMagick'
> 
> img = Magick::Image.new(500, 500)
> 
> gc = Magick::Draw.new
> gc.stroke "red"
> gc.fill "white"
> gc.circle 249.5, 249.5, 249.5, 255
> gc.line 0, 0, 499, 499
> gc.line 0, 499, 499, 0
> gc.draw img
> 
> translucent_blue = Magick::Pixel.from_color "blue"
> translucent_blue.opacity = Magick::QuantumRange * 0.50
> translucent_blue = translucent_blue.to_color(Magick::AllCompliance,
> true)
> 
> gc = Magick::Draw.new
> gc.gravity Magick::CenterGravity
> gc.text_undercolor translucent_blue
> gc.pointsize 48
> gc.fill "rgba(100%, 100%, 100%, 0.50)"
> gc.text 0, 0, "RMagick"
> gc.draw img
> 
> img.matte = false
> img.display

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