Display text with different formatting methods

This example demonstrates differences between the Text and AttrText classes.

exp_name: textDemo
date: 2024-11-19 15_32_19.631265
file: /home/circleci/project/examples/experiments/formatted_text.py
participant: foo
session: 001
2024-11-19 15:32:19,631 - INFO    - Expyfun: Using version 2.0.0.dev0 (requested dev)
2024-11-19 15:32:19,632 - INFO    - Expyfun: Setting up sound card using pyglet backend with 2 playback channels
2024-11-19 15:32:19,835 - WARNING - Expyfun: Mismatch between reported stim sample rate (24414) and device sample rate (44100.0). Experiment Controller will resample for you, but this takes a non-trivial amount of processing time and may compromise your experimental timing and/or cause artifacts.
2024-11-19 15:32:19,835 - INFO    - Expyfun: Setting up screen
2024-11-19 15:32:19,875 - EXP     - Expyfun: Set screen visibility True
2024-11-19 15:32:19,888 - INFO    - Initialized [1400  900] window on screen XlibScreen(display=<pyglet.canvas.xlib.XlibDisplay object at 0x7f25553adba0>, x=0, y=0, width=1400, height=900, xinerama=0) with DPI 69.73
2024-11-19 15:32:19,888 - INFO    - Expyfun: Initializing dummy triggering mode
2024-11-19 15:32:19,890 - INFO    - Expyfun: Initialization complete
2024-11-19 15:32:19,890 - EXP     - Expyfun: Participant: foo
2024-11-19 15:32:19,890 - EXP     - Expyfun: Session: 001
2024-11-19 15:32:20,124 - INFO    - Expyfun: Exiting
2024-11-19 15:32:20,127 - EXP     - Expyfun: Audio stopped and reset.

# Author: Dan McCloy <drmccloy@uw.edu>
#
# License: BSD (3-clause)

from expyfun import ExperimentController, analyze, building_doc
from expyfun.visual import _convert_color

print(__doc__)

# Colors
blue = _convert_color("#00CEE9")
pink = _convert_color("#FF97AF")
white = (255, 255, 255, 255)
# Text
one = (
    "This text can only have a single color, font, and size for the whole "
    "sentence, because it is specified as attr=False"
)
two = (
    "Additional calls to ec.screen_text() can have different formatting,"
    "but have to be manually positioned."
)
thr = (
    f"This text can have {{color {blue}}}different {{color {pink}}}colors "
    f"speci{{color {white}}}fied inline, because its {{color {blue}}}attr "
    f"{{color {white}}}argument is {{color {pink}}}True. {{color {white}}}"
    "Specifying different typefaces or sizes inline is buggy and "
    "not recommended."
)
fou = "Press any key to change all the text to pink using .set_color()."
fiv = "Press any key to quit."
max_wait = float("inf") if not building_doc else 0.0

with ExperimentController(
    "textDemo", participant="foo", session="001", output_dir=None, version="dev"
) as ec:
    ec.wait_secs(0.1)  # without this, first flip doesn't show on some systems
    txt_one = ec.screen_text(one, pos=[0, 0.5], attr=False)
    txt_two = ec.screen_text(
        two, pos=[0, 0.2], font_name="Times New Roman", font_size=32, color="#00CEE9"
    )
    txt_thr = ec.screen_text(thr, pos=[0, -0.2])
    screenshot = ec.screenshot()
    ec.screen_prompt(fou, pos=[0, -0.5], max_wait=max_wait)
    for txt in (txt_one, txt_two, txt_thr):
        txt.set_color("#FF97AF")
        txt.draw()
    ec.screen_prompt(fiv, pos=[0, -0.5], max_wait=max_wait)

analyze.plot_screen(screenshot)