Text
Text is a control for displaying text.
Examples
Custom text styles
import flet as ft
def main(page: ft.Page):
page.title = "Text custom styles"
page.scroll = "adaptive"
page.add(
ft.Text("Size 10", size=10),
ft.Text("Size 30, Italic", size=30, color="pink600", italic=True),
ft.Text(
"Size 40, w100",
size=40,
color=ft.colors.WHITE,
bgcolor=ft.colors.BLUE_600,
weight=ft.FontWeight.W_100,
),
ft.Text(
"Size 50, Normal",
size=50,
color=ft.colors.WHITE,
bgcolor=ft.colors.ORANGE_800,
weight=ft.FontWeight.NORMAL,
),
ft.Text(
"Size 60, Bold, Italic",
size=50,
color=ft.colors.WHITE,
bgcolor=ft.colors.GREEN_700,
weight=ft.FontWeight.BOLD,
italic=True,
),
ft.Text("Size 70, w900, selectable", size=70, weight=ft.FontWeight.W_900, selectable=True),
ft.Text("Limit long text to 1 line with ellipsis", theme_style=ft.TextThemeStyle.HEADLINE_SMALL),
ft.Text(
"Proin rutrum, purus sit amet elementum volutpat, nunc lacus vulputate orci, cursus ultrices neque dui quis purus. Ut ultricies purus nec nibh bibendum, eget vestibulum metus various. Duis convallis maximus justo, eu rutrum libero maximus id. Donec ullamcorper arcu in sapien molestie, non pellentesque tellus pellentesque. Nulla nec tristique ex. Maecenas euismod nisl enim, a convallis arcu laoreet at. Ut at tortor finibus, rutrum massa sit amet, pulvinar velit. Phasellus diam lorem, viverra vitae leo vitae, consequat suscipit lorem.",
max_lines=1,
overflow=ft.TextOverflow.ELLIPSIS,
),
ft.Text("Limit long text to 2 lines and fading", theme_style=ft.TextThemeStyle.HEADLINE_SMALL),
ft.Text(
"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur quis nibh vitae purus consectetur facilisis sed vitae ipsum. Quisque faucibus sed nulla placerat sagittis. Phasellus condimentum risus vitae nulla vestibulum auctor. Curabitur scelerisque, nibh eget imperdiet consequat, odio ante tempus diam, sed volutpat nisl erat eget turpis. Sed viverra, diam sit amet blandit vulputate, mi tellus dapibus lorem, vitae vehicula diam mauris placerat diam. Morbi sit amet pretium turpis, et consequat ligula. Nulla velit sem, suscipit sit amet dictum non, tincidunt sed nulla. Aenean pellentesque odio porttitor sagittis aliquam. Name various at metus vitae vulputate. Praesent faucibus nibh lorem, eu pretium dolor dictum nec. Phasellus eget dui laoreet, viverra magna vitae, pellentesque diam.",
max_lines=2,
),
ft.Text("Limit the width and height of long text", theme_style=ft.TextThemeStyle.HEADLINE_SMALL),
ft.Text(
"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur quis nibh vitae purus consectetur facilisis sed vitae ipsum. Quisque faucibus sed nulla placerat sagittis. Phasellus condimentum risus vitae nulla vestibulum auctor. Curabitur scelerisque, nibh eget imperdiet consequat, odio ante tempus diam, sed volutpat nisl erat eget turpis. Sed viverra, diam sit amet blandit vulputate, mi tellus dapibus lorem, vitae vehicula diam mauris placerat diam. Morbi sit amet pretium turpis, et consequat ligula. Nulla velit sem, suscipit sit amet dictum non, tincidunt sed nulla. Aenean pellentesque odio porttitor sagittis aliquam. Name various at metus vitae vulputate. Praesent faucibus nibh lorem, eu pretium dolor dictum nec. Phasellus eget dui laoreet, viverra magna vitae, pellentesque diam.",
width=700,
height=100,
),
)
ft.app(main)
Pre-defined theme text styles
import flet as ft
def main(page: ft.Page):
page.title = "Text theme styles"
page.scroll = "adaptive"
page.add(
ft.Text("Display Large", theme_style=ft.TextThemeStyle.DISPLAY_LARGE),
ft.Text("Display Medium", theme_style=ft.TextThemeStyle.DISPLAY_MEDIUM),
ft.Text("Display Small", theme_style=ft.TextThemeStyle.DISPLAY_SMALL),
ft.Text("Headline Large", theme_style=ft.TextThemeStyle.HEADLINE_LARGE),
ft.Text("Headline Medium", theme_style=ft.TextThemeStyle.HEADLINE_MEDIUM),
ft.Text("Headline Small", theme_style=ft.TextThemeStyle.HEADLINE_SMALL),
ft.Text("Title Large", theme_style=ft.TextThemeStyle.TITLE_LARGE),
ft.Text("Title Medium", theme_style=ft.TextThemeStyle.TITLE_MEDIUM),
ft.Text("Title Small", theme_style=ft.TextThemeStyle.TITLE_SMALL),
ft.Text("Label Large", theme_style=ft.TextThemeStyle.LABEL_LARGE),
ft.Text("Label Medium", theme_style=ft.TextThemeStyle.LABEL_MEDIUM),
ft.Text("Label Small", theme_style=ft.TextThemeStyle.LABEL_SMALL),
ft.Text("Body Large", theme_style=ft.TextThemeStyle.BODY_LARGE),
ft.Text("Body Medium", theme_style=ft.TextThemeStyle.BODY_MEDIUM),
ft.Text("Body Small", theme_style=ft.TextThemeStyle.BODY_SMALL),
)
ft.app(main)
Font with variable weight
import flet as ft
def main(page: ft.Page):
page.fonts = {
"RobotoSlab": "https://github.com/google/fonts/raw/main/apache/robotoslab/RobotoSlab%5Bwght%5D.ttf"
}
t = ft.Text(
"This is rendered with Roboto Slab",
size=30,
font_family="RobotoSlab",
weight=ft.FontWeight.W_100,
)
def width_changed(e):
t.weight = f"w{int(e.control.value)}"
t.update()
page.add(
t,
ft.Slider(
min=100,
max=900,
divisions=8,
label="{value}",
width=500,
on_change=width_changed,
),
)
ft.app(main)
Rich text basics
import flet as ft
def main(page: ft.Page):
page.add(
ft.Text("Plain text with default style"),
ft.Text(
"Some text",
size=30,
spans=[
ft.TextSpan(
"here goes italic",
ft.TextStyle(italic=True, size=20, color=ft.colors.GREEN),
spans=[
ft.TextSpan(
"bold and italic",
ft.TextStyle(weight=ft.FontWeight.BOLD),
),
ft.TextSpan(
"just italic",
spans=[
ft.TextSpan("smaller italic", ft.TextStyle(size=15))
],
),
],
)
],
),
ft.Text(
disabled=False,
spans=[
ft.TextSpan(
"underlined and clickable",
ft.TextStyle(decoration=ft.TextDecoration.UNDERLINE),
on_click=lambda e: print(f"Clicked span: {e.control.uid}"),
on_enter=lambda e: print(f"Entered span: {e.control.uid}"),
on_exit=lambda e: print(f"Exited span: {e.control.uid}"),
),
ft.TextSpan(" "),
ft.TextSpan(
"underlined red wavy",
ft.TextStyle(
decoration=ft.TextDecoration.UNDERLINE,
decoration_color=ft.colors.RED,
decoration_style=ft.TextDecorationStyle.WAVY,
),
on_enter=lambda e: print(f"Entered span: {e.control.uid}"),
on_exit=lambda e: print(f"Exited span: {e.control.uid}"),
),
ft.TextSpan(" "),
ft.TextSpan(
"overlined blue",
ft.TextStyle(
decoration=ft.TextDecoration.OVERLINE, decoration_color="blue"
),
),
ft.TextSpan(" "),
ft.TextSpan(
"overlined and underlined",
ft.TextStyle(
decoration=ft.TextDecoration.OVERLINE
| ft.TextDecoration.UNDERLINE
),
),
ft.TextSpan(" "),
ft.TextSpan(
"line through thick",
ft.TextStyle(
decoration=ft.TextDecoration.LINE_THROUGH,
decoration_thickness=3,
),
),
],
),
)
def highlight_link(e):
e.control.style.color = ft.colors.BLUE
e.control.update()
def unhighlight_link(e):
e.control.style.color = None
e.control.update()
page.add(
ft.Text(
disabled=False,
spans=[
ft.TextSpan("AwesomeApp 1.0 "),
ft.TextSpan(
"Visit our website",
ft.TextStyle(decoration=ft.TextDecoration.UNDERLINE),
url="https://google.com",
on_enter=highlight_link,
on_exit=unhighlight_link,
),
ft.TextSpan(" All rights reserved. "),
ft.TextSpan(
"Documentation",
ft.TextStyle(decoration=ft.TextDecoration.UNDERLINE),
url="https://google.com",
on_enter=highlight_link,
on_exit=unhighlight_link,
),
],
),
)
ft.app(main)
Rich text with borders and stroke
import flet as ft
def main(page: ft.Page):
page.add(
ft.Stack(
[
ft.Text(
spans=[
ft.TextSpan(
"Greetings, planet!",
ft.TextStyle(
size=40,
weight=ft.FontWeight.BOLD,
foreground=ft.Paint(
color=ft.colors.BLUE_700,
stroke_width=6,
stroke_join=ft.StrokeJoin.ROUND,
style=ft.PaintingStyle.STROKE,
),
),
),
],
),
ft.Text(
spans=[
ft.TextSpan(
"Greetings, planet!",
ft.TextStyle(
size=40,
weight=ft.FontWeight.BOLD,
color=ft.colors.GREY_300,
),
),
],
),
]
)
)
ft.app(main)
Rich text with gradient
import flet as ft
def main(page: ft.Page):
page.add(
ft.Text(
spans=[
ft.TextSpan(
"Greetings, planet!",
ft.TextStyle(
size=40,
weight=ft.FontWeight.BOLD,
foreground=ft.Paint(
gradient=ft.PaintLinearGradient(
(0, 20), (150, 20), [ft.colors.RED, ft.colors.YELLOW]
)
),
),
),
],
)
)
ft.app(main)
Properties
bgcolor
Text background color.
color
Text foreground color.
font_family
System or custom font family to render text with. Check page.fonts for instructions on how to import and use custom fonts in your application.
Using system fonts
You can use the fonts installed on your computer, e.g. "Consolas", "Arial", "Verdana", "Tahoma", etc. For example:
import flet as ft
def main(page: ft.Page):
page.add(
ft.Text("This text is rendered with Consolas font", font_family="Consolas")
)
ft.app(main)
There is one limitation though - system fonts cannot be used in a Flet web app with "CanvasKit" renderer.
Flet web app can render its UI with one of these renderers:
- HTML renderer - uses a combination of HTML elements, CSS, Canvas elements, and SVG elements. This renderer has a smaller download size.
- CanvasKit renderer - this renderer is fully consistent with Flutter mobile and desktop, has faster performance with higher widget density, but adds about 2MB in download size.
By default, Flet uses CanvasKit renderer for both desktop and mobile browsers.
You can explicitly set what renderer to use when running a Flet program:
# ...
ft.app(main, view=ft.AppView.WEB_BROWSER, web_renderer=ft.WebRenderer.HTML)
Now, when you run the same program you'll see "Consolas" font is used.
Supported web_renderer values:
canvaskit(default) - prioritizing performance and pixel-perfect consistency on both desktop and mobile browsers.html- optimizing download size over performance on both desktop and mobile browsers.auto- optimizing for download size on mobile browsers and optimizing for performance on desktop browsers.
italic
True to use italic typeface.
Value is of type bool and defaults to False.
max_lines
An optional maximum number of lines for the text to span, wrapping if necessary. If the text exceeds the given number of lines, it will be truncated according to overflow.
If this is 1, text will not wrap. Otherwise, text will be wrapped at the edge of the box.
no_wrap
If False (default) the text should break at soft line breaks.
If True, the glyphs in the text will be positioned as if there was unlimited horizontal space.
Value is of type bool and defaults to False.
overflow
Controls how text overflows.
Value is of type TextOverflow and defaults to TextOverflow.FADE.
rtl
True to set text direction to right-to-left.
Defaults to False.
selectable
Whether the text should be selectable.
Defaults to False.
semantics_label
An alternative semantics label for this text.
If present, the semantics of this control will contain this value instead of the actual text. This will overwrite any of the TextSpan.semantics_labels.
This is useful for replacing abbreviations or shorthands with the full text value:
Value is of type str.
ft.Text("$$", semantics_label="Double dollars")
size
Text size in virtual pixels.
Value is of type OptionalNumber and defaults to 14.
spans
The list of TextSpan objects to build a rich text paragraph.
style
The text's style.
Value is of type TextStyle.
text_align
Text horizontal align.
Value is of type TextAlign and defaults to TextAlign.LEFT.
theme_style
Pre-defined text style.
Value is of type TextThemeStyle.
value
The text displayed.
Value is of type str.
weight
Font weight.
Value is of type FontWeight and defaults to FontWeight.NORMAL.