Drawing Text#
This example shows how to draw text. While it is simple to draw using the techniques shown here, it is also slow. Using “text objects” can result in significant performance improvements. See Drawing with Text Objects.
drawing_text.py#
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Example showing how to draw text to the screen.
If Python and Arcade are installed, this example can be run from the command line with:
python -m arcade.examples.drawing_text
"""
import arcade
SCREEN_WIDTH = 1200
SCREEN_HEIGHT = 800
SCREEN_TITLE = "Drawing Text Example"
DEFAULT_LINE_HEIGHT = 45
DEFAULT_FONT_SIZE = 20
class MyGame(arcade.Window):
"""
Main application class.
"""
def __init__(self, width, height, title):
super().__init__(width, height, title)
self.background_color = arcade.color.BEIGE
self.text_angle = 0
self.time_elapsed = 0.0
def on_update(self, delta_time):
self.text_angle += 1
self.time_elapsed += delta_time
def on_draw(self):
"""
Render the screen.
"""
# This command should happen before we start drawing. It will clear
# the screen to the background color, and erase what we drew last frame.
self.clear()
# Add the screen title
start_x = 0
start_y = SCREEN_HEIGHT - DEFAULT_LINE_HEIGHT * 1.5
arcade.draw_text("Text Drawing Examples",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE * 2,
width=SCREEN_WIDTH,
align="center")
# start_x and start_y make the start point for the text. We draw a dot to make it
# easy too see the text in relation to its start x and y.
start_x = 10
start_y = SCREEN_HEIGHT - DEFAULT_LINE_HEIGHT * 3
arcade.draw_text("Fonts:",
start_x,
start_y,
arcade.color.FRENCH_WINE,
DEFAULT_FONT_SIZE, bold=True)
# Move the y value down to create another line of text
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Default Font (Arial)",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE)
# Show some built-in fonts
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney Blocks Font",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney Blocks")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney Future Font",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney Future")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney High Font",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney High")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney High Square Font",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney High Square")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney Mini Square Font",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney Mini Square")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney Pixel Font",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney Pixel")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney Pixel Square Font",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney Pixel Square")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney Rocket Font",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney Rocket")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Kenney Rocket Square Font",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name="Kenney Rocket Square")
start_y -= DEFAULT_LINE_HEIGHT
# When trying to use system fonts, it can be risky to specify
# only a single font because someone else's computer might not
# have it installed. This is especially true if they run a
# different operating system. For example, if you are on Windows
# and a friend has a mac or Linux, they might not have the same
# fonts. Your game could look different or broken on their computer.
# One way around that is to provide multiple options for draw_text
# to try. It will use the first one it finds, and use Arial as a
# default if it can't find any of them.
# In the example below, draw_text is given a tuple of names for very
# similar fonts, each of which is common on a different major
# operating systems.
arcade.draw_text("Times New Roman (Or closest match on system)",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
font_name=(
"Times New Roman", # Comes with Windows
"Times", # MacOS may sometimes have this variant
"Liberation Serif" # Common on Linux systems
))
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_text("Multi-Line\ntext using\n\\n characters.",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE / 2,
multiline=True,
width=300)
start_y -= DEFAULT_LINE_HEIGHT * 1.5
arcade.draw_text("Wrapping really long text automatically to a new line. "
"The quick brown fox jumped over the lazy dogs.",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE / 2,
multiline=True,
width=300)
# --- Column 2 ---
start_x = 750
start_y = SCREEN_HEIGHT - DEFAULT_LINE_HEIGHT * 3
arcade.draw_text("Text Positioning:",
start_x,
start_y,
arcade.color.FRENCH_WINE,
DEFAULT_FONT_SIZE,
bold=True)
# start_x and start_y make the start point for the text.
# We draw a dot to make it easy too see the text in relation to
# its start x and y.
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)
arcade.draw_text("Default of 'baseline' and 'Left'",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE)
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)
arcade.draw_text("'bottom' and 'left'",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
anchor_x="left",
anchor_y="bottom")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)
arcade.draw_text("'top' and 'left'",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
anchor_x="left",
anchor_y="top")
start_y -= DEFAULT_LINE_HEIGHT * 2
arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)
arcade.draw_text("'baseline' and 'center'",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
anchor_x="center",
anchor_y="baseline")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)
arcade.draw_text("'baseline' and 'right'",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
anchor_x="right",
anchor_y="baseline")
start_y -= DEFAULT_LINE_HEIGHT
arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)
arcade.draw_text("'center' and 'center'",
start_x,
start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
anchor_x="center",
anchor_y="center")
start_y -= DEFAULT_LINE_HEIGHT * 4
# start_x = 0
# start_y = 0
arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)
arcade.draw_text("Rotating Text",
start_x, start_y,
arcade.color.BLACK,
DEFAULT_FONT_SIZE,
anchor_x="center",
anchor_y="center",
rotation=self.text_angle)
def main():
MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
arcade.run()
if __name__ == "__main__":
main()
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