Squashed commit of the following:

commit 6cc09dd
Author: Dave Amies <damies13@gmail.com>
Date:   Sat Feb 26 14:09:19 2022 +1000

    My tweaks to atest to make it run locally

commit 2dd9d9d
Author: Dave Amies <damies13@gmail.com>
Date:   Sat Feb 26 14:07:38 2022 +1000

    Will now detect the screen scaling ratio and adjust

    This update will now detect the screen scaling ratio and adjust accordingly. I tested it using "tests/atest/calculator.robot" on a mac with a Retina display running OSX 12.0.1 I don't have a windows machine to test on, but based on comments in [pyautogui issue #589](asweigart/pyautogui#589) this should work for the various windows scaling ratios.
    This replaces the self.has_retina which wasn't working as it was returning false on my machine even though it does indeed have a retina display.
    __get_pixel_ratio should only get called the first time _locate is called, that was my experience in testing, though perhaps it should be called every time as windows users could potentially change their display scaling during the test. Also I don't know of an OS that supports it now but I guess it's possible in the future an OS may have a scaling factor less than 100% and this change won't support that either.
    Issue eficode#62

Author: noubar

src/ImageHorizonLibrary/recognition/_recognize_images.py

@@ -12,6 +12,11 @@
 
 class _RecognizeImages(object):
 
+    pixel_ratio = 0.0
+
+    def __get_pixel_ratio(self):
+        self.pixel_ratio = ag.screenshot().size[0]/ag.size().width
+
     def __normalize(self, path):
         if (not self.reference_folder or
                 not isinstance(self.reference_folder, str) or
@@ -203,9 +208,11 @@ def try_locate(ref_image):
         center_point = ag.center(location)
         x = center_point.x
         y = center_point.y
-        if self.has_retina:
-            x = x / 2
-            y = y / 2
+        if self.pixel_ratio == 0.0:
+            self.__get_pixel_ratio()
+        if self.pixel_ratio>1:
+            x = x / self.pixel_ratio
+            y = y / self.pixel_ratio
         return (x, y)
 
     def does_exist(self, reference_image):

tests/atest/calculator.robot

@@ -1,20 +1,21 @@
 *** Settings ***
-Library    ImageHorizonLibrary    ${CURDIR}${/}reference_images${/}calculator    screenshot_folder=${OUTPUT_DIR}
+Library    ${CURDIR}${/}..${/}..${/}..${/}robotframework-imagehorizonlibrary${/}src${/}ImageHorizonLibrary    ${CURDIR}${/}reference_images${/}calculator    screenshot_folder=${OUTPUT_DIR}
 
 *** Test cases ***
 
 Calculator
     Set Confidence      0.9
-    Launch application    python tests/atest/calculator/calculator.py
+    Launch application    python3 tests/atest/calculator/calculator.py
     ${location1}=    Wait for    inputs_folder     timeout=30
     Click to the above of     ${location1}    20
     Type    1010
     Click to the below of     ${location1}    20
     Type    1001
-    ${location2}=    Locate    or_button.png
+    ${location2}=    Locate    or_button
     Click to the below of     ${location2}    0
     Click to the below of     ${location2}    50
+	Sleep    0.1
     ${result}=    Copy
     Should be equal as integers    ${result}    1011
-    Click Image     close_button.png
+    Click Image     close_button
     [Teardown]    Terminate application