I like irfanview because of how fast it is for simple tethered edits like
[a] draw a box [b] control+y crop & then [c] shift+control+y perfect crop.

can the same tethered ability work when a zoom is added to that sequence?

I often press the windows keyboard print screen button & then control+v
into irfanview for that control+y & shift+control+y perfect crop but often
a printscreen result has two monitors worth of screen which I then need to
prefix a zoom to one corner action to that irfanview perfect crop sequence.

how can I back out of that deep corner zoom while keeping the draw box
command alive in irfanview so that I can continue on to that perfect crop?

if I manually crop in a different (but ininitely slower) digital editing
program which tethers commands, I can [a] open the two-screen image [b]
zoom to a corner of one screen [c] select the first point perfectly [d]
zoom out completely and then [e] easily select the far off diagonal corner
(as it's on the edge of the image so you can't miss it) to then finally [f]
crop, all in a single linked tethered sequence of purposed commands.

can the same tethering of sequence commands be done with windows irfanview
after I zoom into the corner to select the exact pixel to begin the crop?

On 12/15/2022 1:13 PM, Freethinker wrote:
> I like irfanview because of how fast it is for simple tethered edits like
> [a] draw a box [b] control+y crop & then [c] shift+control+y perfect crop.
>
> can the same tethered ability work when a zoom is added to that sequence?
>
> I often press the windows keyboard print screen button & then control+v
> into irfanview for that control+y & shift+control+y perfect crop but often
> a printscreen result has two monitors worth of screen which I then need to
> prefix a zoom to one corner action to that irfanview perfect crop sequence.
>
> how can I back out of that deep corner zoom while keeping the draw box
> command alive in irfanview so that I can continue on to that perfect crop?
>
> if I manually crop in a different (but ininitely slower) digital editing
> program which tethers commands, I can [a] open the two-screen image [b]
> zoom to a corner of one screen [c] select the first point perfectly [d]
> zoom out completely and then [e] easily select the far off diagonal corner
> (as it's on the edge of the image so you can't miss it) to then finally [f]
> crop, all in a single linked tethered sequence of purposed commands.
>
> can the same tethering of sequence commands be done with windows irfanview
> after I zoom into the corner to select the exact pixel to begin the crop?
r

I am not sure I understand your question. If you mean can your process
be automated, to some extent it can be done in "Batch Conversion Rename
- Advance" under File in the Menu.

When I do what you do, I do a print screen and paste it into Irfanview.
I then draw a box around the area that I want to keep, and hit Central Y
to cut every thing outside of the box away

I don't know you experience level with Irfanview, but you draw the box
by placing the cursor on the corner of the are you want, and they
holding down the left mouse button draw the box around the area you want.

As you have said in my opinion Irfanview is one of the best image
processing programs in existence, free or paid.

It is small fast, and with the plugins very capable. One of the best
addons does not come in the plug in package. It is KASMOS which can be
found by searching the Irfanview plug in page of OCR.
--

On 15.12.22 19:47, Keith Nuttle wrote:
> I am not sure I understand your question. If you mean can your process
> be automated, to some extent it can be done in "Batch Conversion Rename
> - Advance" under File in the Menu.

I probably provided too much detail where all I want to do is use irfanview
to crop but I want to prefix a zoom to the two-step crop sequence.

zoom to a specific spot
select first point exactly
zoom out to full screen
select the second point (easy to do without zoom since it's always an edge)
control+y (to crop)
shift+control+y for a perfect crop (this second perfect crop is optional)

it's the first three steps that I want to tether any way that works.

> When I do what you do, I do a print screen and paste it into Irfanview.
> I then draw a box around the area that I want to keep, and hit Central Y
> to cut every thing outside of the box away

but what would you do if you had to zoom into the first spot exactly?
I can't get irfanview to [a] sweep out an area to zoom in and then [b]
select the exact first spot for the crop and then [c] zoom out completely
so that I can [d] select the second spot for the crop.

the crop isn't the problem.
the zoom select prefixed before the zoom out and crop is the problem.

> I don't know you experience level with Irfanview, but you draw the box
> by placing the cursor on the corner of the are you want, and they
> holding down the left mouse button draw the box around the area you want.

i've been using irfanview for so long I can't rememember how long.
twenty years easily.

the problem is appending the zoom before the crop without losing either.

> As you have said in my opinion Irfanview is one of the best image
> processing programs in existence, free or paid.

the program which easily does exactly what I want to do and which anyone
would want to do is paint.net but it's infinitely slower than irfanview.

> It is small fast, and with the plugins very capable. One of the best
> addons does not come in the plug in package. It is KASMOS which can be
> found by searching the Irfanview plug in page of OCR.

with the image to be perfectly cropped in paint.net you [a] press the Z key
to initiate a swept zoom at point 1 and then [b] you sweep out a small zoom
area (which is the zoom task I need irfanview to do but I don't know how).

when you're zoomed into a swept out area, you then [c] press the S key to
select the crop area and you start sweeping out but to speed things up
immensely you then [d] press control+b to instantly back out and view the
entire image again but you're still in the swept crop command - which is
the critical missing feature I'm trying to find in irfanview and then [e]
you press control+shift+x to crop perfectly the swept out area.

what paint.net easily does that I'm only trying to get irfanview to do is
prefixing the zoom for that first very precise selection point to the
tethered backing out of the whole image for the second selection point of
the crop to work after I've zoomed in and then all the way back out.

unfortunately irfanview can't do a zoom to a specific swept area, can it?

On 12/15/2022 3:07 PM, Freethinker wrote:
> On 15.12.22 19:47, Keith Nuttle wrote:
>> I am not sure I understand your question.  If you mean can your
>> process be automated, to some extent it can be done in "Batch
>> Conversion Rename - Advance" under File in the Menu.
>
> I probably provided too much detail where all I want to do is use irfanview
> to crop but I want to prefix a zoom to the two-step crop sequence.
>
> zoom to a specific spot
> select first point exactly
> zoom out to full screen
> select the second point (easy to do without zoom since it's always an edge)
> control+y (to crop)
> shift+control+y for a perfect crop (this second perfect crop is optional)
>
> it's the first three steps that I want to tether any way that works.
>
>> When I do what you do, I do a print screen and paste it into
>> Irfanview. I then draw a box around the area that I want to keep, and
>> hit Central Y to cut every thing outside of the box away
>
> but what would you do if you had to zoom into the first spot exactly?
> I can't get irfanview to [a] sweep out an area to zoom in and then [b]
> select the exact first spot for the crop and then [c] zoom out completely
> so that I can [d] select the second spot for the crop.
>
> the crop isn't the problem.
> the zoom select prefixed before the zoom out and crop is the problem.
>
>> I don't know you experience level with Irfanview, but you draw the box
>> by placing the cursor on the corner of the are you want, and they
>> holding down the left mouse button draw the box around the area you want.
>
> i've been using irfanview for so long I can't rememember how long.
> twenty years easily.
>
> the problem is appending the zoom before the crop without losing either.
>
>> As you have said in my opinion Irfanview is one of the best image
>> processing programs in existence, free or paid.
>
> the program which easily does exactly what I want to do and which anyone
> would want to do is paint.net but it's infinitely slower than irfanview.
>
>> It is small fast, and with the plugins very capable.   One of the best
>> addons does not come in the plug in package.   It is KASMOS which can
>> be found by searching the Irfanview plug in page of OCR.
>
> with the image to be perfectly cropped in paint.net you [a] press the Z key
> to initiate a swept zoom at point 1 and then [b] you sweep out a small zoom
> area (which is the zoom task I need irfanview to do but I don't know how).
>
> when you're zoomed into a swept out area, you then [c] press the S key to
> select the crop area and you start sweeping out but to speed things up
> immensely you then [d] press control+b to instantly back out and view the
> entire image again but you're still in the swept crop command - which is
> the critical missing feature I'm trying to find in irfanview and then [e]
> you press control+shift+x to crop perfectly the swept out area.
>
> what paint.net easily does that I'm only trying to get irfanview to do is
> prefixing the zoom for that first very precise selection point to the
> tethered backing out of the whole image for the second selection point of
> the crop to work after I've zoomed in and then all the way back out.
>
> unfortunately irfanview can't do a zoom to a specific swept area, can it?
Still not completely understanding what you are doing, you can move the
crop area. But If I understand, you want a small area of a zoomed image.
If you zoom the image to see what you want. You would then put the
cursor at the corner of the area you want, and then holding the left
mouse button down, move the cursor in the direction of the opposite
corner of the area you want. As you hit the edge of the Irfanview frame
with the cursor, Irfanview moves the image so that the cursor remains in
the frame. Once you have reached the opposite corner of the desired
area then Cntrl Y crops the area.


--
Judge your ancestors by how well they met their standards not yours.
They did not know your standards, so could not try to meet them.

On 15.12.22 21:08, Keith Nuttle wrote:
> Still not completely understanding what you are doing, you can move the
> crop area. But If I understand, you want a small area of a zoomed image.

the two actions I'm looking for in irfanview are [a] the ability to zoom in
to a swept out area & [b] selecting a crop start point inside that zoomed
in area & then [c] zooming back out to select the second crop point.

that is two actions that I want to be connected as one tethered sequence.

> If you zoom the image to see what you want.

there are these irfanview zoom options which maybe will help.
+ = zoom in (but I'm looking for a sweep area instead]
- = zoom out (but I'm looking for a sweep area instead]

the problem with the plus and minus key is you need thousands of them to
zoom into any area tight enough to be useful as the starting crop point.

but these actions may come in handy to sweep zoom & then crop.
shift+l = lock zoom (this may come in handy when sequencing zoom & crop)
control+shift+k = keep scroll position (this may also come in handy)
control + h = original size (this may back out which would be handy)
f = fit

I can only get irfanview to zoom if I press the plus key a thousand times
and then I adjust the scroll bars a few hundred times until I'm at an area
to start the crop where that area is about 50 x 50 pixels or thereabouts.

but I have confidence some set of key sequences will allow me to sweep out
a small area to zoom into and then select the first point to crop and then
back out to the whole image to select the second crop point.

that first sweep zoom to obtain that first crop point is the hard part.
the rest is easy.

> You would then put the
> cursor at the corner of the area you want, and then holding the left
> mouse button down, move the cursor in the direction of the opposite
> corner of the area you want. As you hit the edge of the Irfanview frame
> with the cursor, Irfanview moves the image so that the cursor remains in
> the frame. Once you have reached the opposite corner of the desired
> area then Cntrl Y crops the area.

that's exactly what I do in irfanview to crop.

the problem is zooming tightly and then doing that crop in one sequence.

I'm confident irfanview can do it but I don't yet have the key sequence.

On 12/15/2022 4:41 PM, Freethinker wrote:
> On 15.12.22 21:08, Keith Nuttle wrote:
>> Still not completely understanding what you are doing, you can move
>> the crop area.  But If I understand, you want a small area of a zoomed
>> image.
>
> the two actions I'm looking for in irfanview are [a] the ability to zoom in
> to a swept out area & [b] selecting a crop start point inside that zoomed
> in area & then [c] zooming back out to select the second crop point.
>
> that is two actions that I want to be connected as one tethered sequence.
>
>> If you zoom the image to see what you want.
>
> there are these irfanview zoom options which maybe will help.
> + = zoom in (but I'm looking for a sweep area instead]
> - = zoom out (but I'm looking for a sweep area instead]
>
> the problem with the plus and minus key is you need thousands of them to
> zoom into any area tight enough to be useful as the starting crop point.
>
> but these actions may come in handy to sweep zoom & then crop.
> shift+l = lock zoom (this may come in handy when sequencing zoom & crop)
> control+shift+k = keep scroll position (this may also come in handy)
> control + h = original size (this may back out which would be handy)
> f = fit
> I can only get irfanview to zoom if I press the plus key a thousand times
> and then I adjust the scroll bars a few hundred times until I'm at an area
> to start the crop where that area is about 50 x 50 pixels or thereabouts.
>
> but I have confidence some set of key sequences will allow me to sweep out
> a small area to zoom into and then select the first point to crop and then
> back out to the whole image to select the second crop point.
>
> that first sweep zoom to obtain that first crop point is the hard part.
> the rest is easy.
>
>> You would then put the cursor at the corner of the area you want, and
>> then holding the left mouse button down, move the cursor in the
>> direction of the opposite corner of the area you want. As you hit the
>> edge of the Irfanview frame with the cursor, Irfanview moves the image
>> so that the cursor remains in the frame.  Once you have reached the
>> opposite corner of the desired area then Cntrl Y crops the area.
>
> that's exactly what I do in irfanview to crop.
>
> the problem is zooming tightly and then doing that crop in one sequence.
>
> I'm confident irfanview can do it but I don't yet have the key sequence.
I use the mouse nearly exclusively and use the mouse wheel to scroll so
most of my manipulations of cropping etc, are all done with the mouse in
the right hand and Keys in the left.

On 16.12.22 01:00, Keith Nuttle wrote:
>> I'm confident irfanview can do it but I don't yet have the key sequence.
>
> I use the mouse nearly exclusively and use the mouse wheel to scroll so
> most of my manipulations of cropping etc, are all done with the mouse in
> the right hand and Keys in the left.

if the mouse could do it I'd be happy but I don't think you can zoom into a
given rectangle with irfanview using just the mouse &/or keyboard, can you?

it doesn't seem that irfanview can yet zoom to a given rectangle using any
combination of keys or mouse but that's needed for a zoom & crop to work.

so it must be there but I haven't found the irfanview sequence yet to zoom
to an area and select the start point of a crop and then back out to select
the finish point of that crop.

On 12/15/2022 6:16 PM, Freethinker wrote:
> On 16.12.22 01:00, Keith Nuttle wrote:
>>> I'm confident irfanview can do it but I don't yet have the key sequence.
>>
>> I use the mouse nearly exclusively and use the mouse wheel to scroll
>> so most of my manipulations of cropping etc, are all done with the
>> mouse in the right hand and Keys in the left.
>
> if the mouse could do it I'd be happy but I don't think you can zoom into a
> given rectangle with irfanview using just the mouse &/or keyboard, can you?
>
> it doesn't seem that irfanview can yet zoom to a given rectangle using any
> combination of keys or mouse but that's needed for a zoom & crop to work.
>
> so it must be there but I haven't found the irfanview sequence yet to zoom
> to an area and select the start point of a crop and then back out to select
> the finish point of that crop.

I place the cursor in the general area where I thing the spot is. I
then zoom with the scroll wheel, make any adjustment in the cursor
position. and drag the box to get the zoom area I want.

On 16.12.22 02:15, Keith Nuttle wrote:
> I haven't found the irfanview sequence yet to zoom
>> to an area and select the start point of a crop and then back out to select
>> the finish point of that crop.
>
> I place the cursor in the general area where I thing the spot is. I
> then zoom with the scroll wheel, make any adjustment in the cursor
> position. and drag the box to get the zoom area I want.

interesting. I'm on irfanview 4.59 which doesn't do that.

clicking in the center of an image and lifting up on all the mouse buttons
and then only moving the mouse scroll wheel will either scroll the image up
and down inside that window if it was not fully fitted or if it was fully
fitted the mouse scroll wheel moves to the next (or prior) image file in
the directory.

pressing the left mouse button in the middle of the image and moving the
scroll wheel just did the same thing as above.

first pressing on the control key and then moving the scroll wheel does
zoom in and out but it will take a lifetime of scrolling to get to a small
enough zoomed box to make a pixel perfect start point for the crop.

but in practicing that I think I figured it out finally thanks to you.

it's hard to describe but what I did just now is this.
[a] press f to fit image to window (to have a known starting point]
[b] sweep out with the left mouse button a tight box
& let go of the left button when you have diagonal corners swept out
make that box small enough, something like a quarter inch square
[c] without touching any mouse buttons put the cursor in the box center
which will make the cursor change into a magnifying glass plus sign
[d] left click once on that center-box magnifying-glass-plus-sign icon
which will zoom you to the quarter inch box that you had swept out
if necessary, do that process again to zoom in even tighter
irfanview will NOT show pixels like paint.net does (too bad)
[e] holding left mouse button down begin your crop box now
if you're close to the edge, irfanview will screw up for some reason
if that happens you need to edit the canvas to make it bigger
five pixels isn't really enough. use ten pixels extra canvas
[f] while still holding the left mouse down as you sweep the crop box
then hit the f key to back out quickly (as irfanview is too slow)
[g] sweep to the rest of the desired crop box and let go of the left mouse
[h] use control+y to crop and shift+control+y to perfect crop

this seems to work with the two surprising caveats that occurred.
[1] irfanview can't crop close to the edge so you have to increase canvas
[2] irfanview can't show pixels like paint.net does so it's very blurry

unless there is a better way to zoom and crop, this is the answer to my
original question of how to zoom and crop in irfanview without taking
almost forever to zoom in little by little with the plus key or wheel.

thank you for your help.

Freethinker <freethinker@mymail.com> wrote:
> [d] left click once on that center-box magnifying-glass-plus-
sign icon
> which will zoom you to the quarter inch box that you had swept
out
> if necessary, do that process again to zoom in even tighter
> irfanview will NOT show pixels like paint.net does (too bad)

Irfanview has a little glitch that if you grab the edge of the
window and resize it slightly the view turns from interpolated to
individual pixels. You can also see the pixels if you turn off
"use resample for zooming" in View > Display Options.

It would be nice though if Irfanview automatically switched to
showing individual pixels when you zoomed more than a certain
amount, say 1000%, since resampling isn't much use when you get to
the point that each pixel is a few millimetres across.

On Fri, 16 Dec 2022 01:16:44 +0200, Freethinker wrote:
> if the mouse could do it I'd be happy but I don't think you can zoom into a
> given rectangle with irfanview using just the mouse &/or keyboard, can you?
>

1. Make the rectangle with mouse.
2. Move mouse inside rectangle. You'll see the cursor change to
magnifying glass with plus sign.
3. Click.

--
Stan Brown, Tehachapi, California, USA https://BrownMath.com/
Shikata ga nai...

On 16.12.22 10:08, Gordon Freeman wrote:
> Irfanview has a little glitch that if you grab the edge of the
> window and resize it slightly the view turns from interpolated to
> individual pixels. You can also see the pixels if you turn off
> "use resample for zooming" in View > Display Options.
>
> It would be nice though if Irfanview automatically switched to
> showing individual pixels when you zoomed more than a certain
> amount, say 1000%, since resampling isn't much use when you get to
> the point that each pixel is a few millimetres across.

thank you for that advice to turn off the inexplicable zooming blurring.

the viewing of individual square pixels is much better with that irfanview
"view > display options > use resampling for zooming" turned off!

the glitch I'm consistently seeing with irfanview is that when I draw a box
on the edge of the image even with that resampling blurring turned off
irfanview can only select as close to one pixel from the edge of the image!

that's terrible because you will always lose the last pixel just inside the
image edge unless you think to add a pixel to the canvas before zooming in.

it's a bug more than it's a glitch but maybe my irfanview 4.59 is old and
the ability to select even the last pixel at an edge when zoomed is fixed?

On 16.12.22 18:55, Stan Brown wrote:
> 1. Make the rectangle with mouse.
> 2. Move mouse inside rectangle. You'll see the cursor change to
> magnifying glass with plus sign.
> 3. Click.

it's not that easy but it's good to know that the rectangle magnifying
glass is the best way to zoom into any small area of a screenshot image.

the bugs that happen are when you zoom into an area that is an edge of the
image then you always lose the last pixel when running a subsequent crop.

the workaround to that bug is to add one pixel to the canvas at that edge
before you zoom to that edge to perform the beginning of the crop.

the other issue is how to zoom back out to select the second point of the
crop as for me most of the time that last corner is an opposite edge.

the steps work this way
[1] press the windows keyboard printscreen button to capture the screens
[2] open irfanview & paste that captured image using the keyboard control+v
[3] in irfanview press shift+v & then add one pixel to the bottom edge
[4] in irfanview now you can sweep out an area around that bottom edge
[5] when the cursor turns to a plus sign magnifying glass, click inside
[6] keep doing that procedure until you're zoomed into a few pixels
[7] make sure "view > display options > use resampling for zooming" is off
[8] select the first point of your zoom on the bottom edge and sweep out
[9] press the keyboard f key to fit the image to the window
[10] you can sweep past the image edge and press control+y to rough crop
[11] press control+shift+y for a precise crop based on background color
[12] that results in a cropped image to exact edge pixels on all four sides