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Missing pygame.FINGERMOTION events #4156

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project-owner opened this issue Feb 8, 2024 · 0 comments
Open

Missing pygame.FINGERMOTION events #4156

project-owner opened this issue Feb 8, 2024 · 0 comments

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@project-owner
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project-owner commented Feb 8, 2024 •
edited

Hi,

I'm using:
Pygame: 2.1.2 (SDL 2.26.5, Python 3.11.2)
OS: Raspberry Pi OS Lite Bookworm 32-bit
Touchscreen: Waveshare 3.5" HDMI https://www.amazon.com/Waveshare-3-5inch-HDMI-LCD-Resolution/dp/B071NVW7Y7
Hardware: Raspberry Pi 4B

I'm running the following Pygame program to detect touch events:

import pygame
import time
pygame.display.init()
while True:
    for event in pygame.event.get():
        t = event.type
        if t == pygame.FINGERUP:
            print(f"up x:{event.x} y:{event.y}")
        elif t == pygame.FINGERDOWN:
            print(f"down x:{event.x} y:{event.y}")
        elif t == pygame.FINGERMOTION:
            print(f"motion x:{event.x} y:{event.y}")
        else:
            print("unknown")
    time.sleep(0.1)

It shows finger down and up events. There are no FINGERMOTION events instead (when I move finger) they are printed as a series of down/up events with different coordinates.

I've installed the evtest program to see a device events. Here is the result for one touch:

$ evtest /dev/input/touchscreen
Input driver version is 1.0.1
Input device ID: bus 0x1c vendor 0x0 product 0x1ea6 version 0x0
Input device name: "ADS7846 Touchscreen"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 330 (BTN_TOUCH)
  Event type 3 (EV_ABS)
    Event code 0 (ABS_X)
      Value   2388
      Min        0
      Max     4095
    Event code 1 (ABS_Y)
      Value   2851
      Min        0
      Max     4095
    Event code 24 (ABS_PRESSURE)
      Value      0
      Min        0
      Max      255
Properties:
Testing ... (interrupt to exit)
Event: time 1707330911.535564, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1707330911.535564, type 3 (EV_ABS), code 0 (ABS_X), value 3398
Event: time 1707330911.535564, type 3 (EV_ABS), code 1 (ABS_Y), value 1526
Event: time 1707330911.535564, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 245
Event: time 1707330911.535564, -------------- SYN_REPORT ------------
Event: time 1707330911.560764, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1707330911.560764, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1707330911.560764, -------------- SYN_REPORT ------------

Here is the output when I move finger:

...
Event: time 1707330986.391574, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1707330986.391574, type 3 (EV_ABS), code 0 (ABS_X), value 1830
Event: time 1707330986.391574, type 3 (EV_ABS), code 1 (ABS_Y), value 630
Event: time 1707330986.391574, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 244
Event: time 1707330986.391574, -------------- SYN_REPORT ------------
Event: time 1707330986.407548, type 3 (EV_ABS), code 0 (ABS_X), value 1862
Event: time 1707330986.407548, type 3 (EV_ABS), code 1 (ABS_Y), value 629
Event: time 1707330986.407548, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 245
Event: time 1707330986.407548, -------------- SYN_REPORT ------------
Event: time 1707330986.423547, type 3 (EV_ABS), code 0 (ABS_X), value 1822
Event: time 1707330986.423547, type 3 (EV_ABS), code 1 (ABS_Y), value 628
Event: time 1707330986.423547, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 244
Event: time 1707330986.423547, -------------- SYN_REPORT ------------
Event: time 1707330986.432768, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1707330986.432768, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1707330986.432768, -------------- SYN_REPORT ------------
Event: time 1707330986.491547, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1707330986.491547, type 3 (EV_ABS), code 0 (ABS_X), value 1785
Event: time 1707330986.491547, type 3 (EV_ABS), code 1 (ABS_Y), value 756
Event: time 1707330986.491547, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 249
Event: time 1707330986.491547, -------------- SYN_REPORT ------------
Event: time 1707330986.500770, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1707330986.500770, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1707330986.500770, -------------- SYN_REPORT ------------
Event: time 1707330986.519542, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1707330986.519542, type 3 (EV_ABS), code 0 (ABS_X), value 1835
Event: time 1707330986.519542, type 3 (EV_ABS), code 1 (ABS_Y), value 751
Event: time 1707330986.519542, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 249
Event: time 1707330986.519542, -------------- SYN_REPORT ------------
Event: time 1707330986.535538, type 3 (EV_ABS), code 0 (ABS_X), value 1833
Event: time 1707330986.535538, type 3 (EV_ABS), code 1 (ABS_Y), value 752
Event: time 1707330986.535538, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 247
Event: time 1707330986.535538, -------------- SYN_REPORT ------------
Event: time 1707330986.544769, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1707330986.544769, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1707330986.544769, -------------- SYN_REPORT ------------
Event: time 1707330986.611535, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1707330986.611535, type 3 (EV_ABS), code 1 (ABS_Y), value 880
Event: time 1707330986.611535, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 251
Event: time 1707330986.611535, -------------- SYN_REPORT ------------
Event: time 1707330986.627541, type 3 (EV_ABS), code 0 (ABS_X), value 1867
Event: time 1707330986.627541, type 3 (EV_ABS), code 1 (ABS_Y), value 907
Event: time 1707330986.627541, -------------- SYN_REPORT ------------
Event: time 1707330986.643538, type 3 (EV_ABS), code 0 (ABS_X), value 1866
Event: time 1707330986.643538, type 3 (EV_ABS), code 1 (ABS_Y), value 884
Event: time 1707330986.643538, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 252
Event: time 1707330986.643538, -------------- SYN_REPORT ------------
Event: time 1707330986.659541, type 3 (EV_ABS), code 0 (ABS_X), value 1867
Event: time 1707330986.659541, type 3 (EV_ABS), code 1 (ABS_Y), value 918
Event: time 1707330986.659541, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 249
Event: time 1707330986.659541, -------------- SYN_REPORT ------------
Event: time 1707330986.675537, type 3 (EV_ABS), code 0 (ABS_X), value 1846
Event: time 1707330986.675537, type 3 (EV_ABS), code 1 (ABS_Y), value 902
Event: time 1707330986.675537, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 248
Event: time 1707330986.675537, -------------- SYN_REPORT ------------
Event: time 1707330986.684766, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1707330986.684766, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1707330986.684766, -------------- SYN_REPORT ------------
Event: time 1707330986.703537, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1707330986.703537, type 3 (EV_ABS), code 0 (ABS_X), value 1899
Event: time 1707330986.703537, type 3 (EV_ABS), code 1 (ABS_Y), value 1007
Event: time 1707330986.703537, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 249
Event: time 1707330986.703537, -------------- SYN_REPORT ------------
Event: time 1707330986.719543, type 3 (EV_ABS), code 0 (ABS_X), value 1862
Event: time 1707330986.719543, type 3 (EV_ABS), code 1 (ABS_Y), value 1010
Event: time 1707330986.719543, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 252
Event: time 1707330986.719543, -------------- SYN_REPORT ------------
Event: time 1707330986.735536, type 3 (EV_ABS), code 0 (ABS_X), value 1954
Event: time 1707330986.735536, type 3 (EV_ABS), code 1 (ABS_Y), value 978
Event: time 1707330986.735536, -------------- SYN_REPORT ------------
Event: time 1707330986.751540, type 3 (EV_ABS), code 0 (ABS_X), value 1926
Event: time 1707330986.751540, type 3 (EV_ABS), code 1 (ABS_Y), value 964
Event: time 1707330986.751540, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 250
Event: time 1707330986.751540, -------------- SYN_REPORT ------------
Event: time 1707330986.767537, type 3 (EV_ABS), code 0 (ABS_X), value 1919
Event: time 1707330986.767537, type 3 (EV_ABS), code 1 (ABS_Y), value 1108
Event: time 1707330986.767537, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 251
Event: time 1707330986.767537, -------------- SYN_REPORT ------------
Event: time 1707330986.783540, type 3 (EV_ABS), code 0 (ABS_X), value 1910
Event: time 1707330986.783540, type 3 (EV_ABS), code 1 (ABS_Y), value 1110
Event: time 1707330986.783540, -------------- SYN_REPORT ------------
Event: time 1707330986.799546, type 3 (EV_ABS), code 0 (ABS_X), value 1919
Event: time 1707330986.799546, type 3 (EV_ABS), code 1 (ABS_Y), value 1113
...

It really looks like a sequence of down and up events plus Event type 3 which I think Pygame doesn't detect (?)
Is there any way to get pygame.FINGERMOTION events? Is it the problem of the touchscreen which doesn't issue those events or Pygame problem? I tried two different touchscreens (though based on the same chip ADS7846) and they both have the same problem - no FINGERMOTION events in Pygame.

Thanks in advance!
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