Help with screen sizes

dgelessus

@donnieh You might want to double-check the rotations. The iPad mini resolutions seem to be in portrait, but the iPad Air and Pro resolutions in landscape. Also, are these physical pixels or virtual "points"? For example, the iPhone 3GS and 4 have the same number of "points", but the iPhone 4 has four times the pixels, because one "point" is made up of four pixels (because retina).

ccc

Has anyone ever hacked with MacTracker's url scheme like:

import webbrowser
webbrowser.open('mactracker://ABA79B4E-3781-4053-8D73-AC46D16CE643')

http://blog.mactracker.ca/2006/11/link-to-mactracker-from-other-apps.html. This (Mac or iOS) app will give you all of the speeds and feeds for every product that Apple has ever made. The only problem is that the url scheme is 10 years old and a bit long in the tooth. To open the stats page on a particular model, you need that model's UUID which I can find in the app but not elsewhere. Opening the url merely opens the MacTracker app to the right page but does not return any model back to the caller (Pythonista). It would be pretty awesome if the app would accept iPad5,4 in the inbound url instead of a model uuid and would return a json dict of speeds and feeds for that particular model..

donnieh

@AtomBombed ui.get_screen_size() returns a 2-tuple, (w, h) of the current device's screen size.

Nothing related to pixel location etc.

donnieh

@dgelessus Good catch. I fixed them to all be in Portrait. Yeah these are points which are clusters of pixels. I do not know how the points are derived though. Apple determines this?

Screen "point count" (not resolution) retuned from ui.get_screen_size() - (width, height) all in PORTRAIT

iPhone4_screen_size = (320, 480)
iPhone4s_screen_size = (320, 480)
iPhone5_screen_size = (320, 568)
iPhone5s_screen_size = (320, 568)
iPhone6_screen_size = (375, 667)
iPhone6P_screen_size = (414, 736)
iPhone6s_screen_size = (375, 667)
iPhone6sP_screen_size = (414, 736)
iPad2_screen_size = (768, 1024)
iPad_Mini_1 = (768, 1024)
iPad_Mini_2 = (768, 1024)
iPad_Mini_3 = (768, 1024)
iPad_Air_screen_size = (768, 1024)
iPad_Air_2_screen_size = (768, 1024)
iPad_Pro_screen_size = (1024, 1366)

Webmaster4o

So, it actually looks like iPad mini 1 is the same size as 2 and 3. This is confusing to me, though, because iPad mini 2 and three have retina screens while the first generation does not

donnieh

@Webmaster4o yes this is a good point, one that @dgelessus referred to above. The terms "Retina", "resolution" and marketing numbers like 2732 x 2048 (264 ppi) (for the iPad Pro) seem to have nothing to do with ui.get_screen_size().

These are all referring to the amount of pixels. While if we could somehow programmatically get the the amount of pixels in x and the amount of pixels in the y it would be useful, I do not know how to do this. Using ui.get_screen_size() returns "points". These points are clusters of pixels. Using the points is fine for determine screen size as far as I seen though.

This article is helpful. http://www.idev101.com/code/User_Interface/sizes.html

JonB

get screen size always returns the same size regardless of orientation,etc. But the maz size of the view depends on whether you are fullscreen, sheet, or panel, and whether you are hiding the title bar.

brumm

In the scene module you find scene.get_screen_scale()
"Return the scale factor of the current device’s screen. For retina screens this will usually be 2.0 or 3.0, and 1.0 for non-retina screens."

brumm

A small example. With a retina display you should see three lines.

import ui, scene

scale = scene.get_screen_scale()
with ui.ImageContext(100, 100) as ctx:
	ui.set_color('white')
	ui.fill_rect(0, 0, 100, 100)
	ui.set_color('black')
	ui.fill_rect(0, 3, 100, 2)
	ui.set_color('black')
	ui.fill_rect(0, 7, 100, 1)
	if scale > 1:
		ui.set_color('black')
		ui.fill_rect(0, 10, 100, 1 / scale)
	img = ctx.get_image()
	img.show()

ExParrot

scrSize=(1136,640) # iPhone 5 (dots)

Webmaster4o

This is my 30-minute utility that should be useful. It's an editor action that can put blank files for any iOS device in your current working directory.

ccc

Added 32-bit vs. 64-bit and Retina display multiplier https://github.com/cclauss/Ten-lines-or-less/blob/master/pythonista_version.py

Pythonista version 2.0.1 (201000) on iOS 9.2.1 on a 64-bit iPad5,4 with a screen size of (1024 x 768) * 2