Simple application to print part of an image - suggestions?

[Patton Echols]

On 03/04/2009 02:37 PM, Chris G wrote:
> On Wed, Mar 04, 2009 at 01:46:47PM -0800, Patton Echols wrote:
>   
>> On 03/04/2009 02:34 AM, Chris G wrote:
>>     
>>> On Tue, Mar 03, 2009 at 08:00:08PM -0800, Patton Echols wrote:
>>>   
>>>       
>>>> On 03/03/2009 07:22 PM, Matthew Flaschen wrote:
>>>>     
>>>>         
>>>>> Which ImageMagick's display command can do easily.  I just gave the full
>>>>> steps in another email.
>>>>>   
>>>>>       
>>>>>           
>>>> Oops, my bad.  And here I sent another reply.  I wish I had seen this 
>>>> and your other post for mouthing off  . . . Again!
>>>>
>>>> As you'll see in my other reply, I was aware of display, but did not 
>>>> realize it would do all of that.  I had looked at the man page, but 
>>>> understood the options to be command line, not what could be done while 
>>>> looking at an image.  Very interesting. 
>>>>
>>>> Thanks for the pointer
>>>>
>>>>     
>>>>         
>>> ... but, as I said, it doesn't do what I want.  I can very easily
>>> select the part of the image I want and have it displayed in the
>>> ImageMagick window but I can't then get it to fill and A4 sheet when
>>> printed. 
>>>
>>> ImageMagick's display utility is almost exactly what I want except for
>>> the printing bit.
>>>   
>>>       
>> In theory the following should work, but see my problem below.
>>
>> When using the display utility, as Matt described, before you print, 
>> click on View | Resize  The dialog will show the existing geometry eg 
>> 640x480,0,0  Replace this with the number if pixels needed to fill the 
>> narrowest width of your page.  For example, if your printer is looking 
>> for 300 dpi and you have 8inch X 10.5 inch printable area, the narrow 
>> direction is 2400 dpi so you would use 2400x2400.  The "Constrain Ratio" 
>> checkbox is ticked  by default so your resized image will be some 
>> different size with a max of 2400
>>
>> Then do the File | Print sequence.
>>
>> I tried testing this and it works to a point.  A small crop expands a 
>> larger box  size, but not full width.   My printer is a HP 950c using 
>> and my box uses CUPS to print to it.  The IM display command prints to a 
>> postscript printer.  I'm not sure what is going on with my setup and I 
>> don't have time to dig into it. (Nor do I have any idea where I would look!)
>>
>>     
> It sort of works (as you say) but it is a bit clumsy, especially as
> resizing to 2400x<something> results in a image which is several times
> the size of my screen.
>
> Not to mention I don't really see how I know what dpi "your printer is
> looking for", my printer's ultimate dpi is something like 1200x1200 I
> think.
>
>   
Yeah, I have thought about that since and  concluded that it was 
something to do with how IM translates to postscript or what CUPS is 
doing with it after the fact.  For my system, a small crop needs to be 
resized larger, but that is not the only problem.   If anyone else out 
there has thoughts, I'm still curious, don't have a "need" but curious.

Patton