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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-14 20:18:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-14 20:18:28 +0000
commitf8363b456f1ab31ee56abad579b215af195093d5 (patch)
treeb1500c675c2e0a55fb75721a854e1510acf7c862 /docs/source/text.rst
parentInitial commit. (diff)
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Adding upstream version 9.11.0.upstream/9.11.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.. _rich_text:
+
+Rich Text
+=========
+
+Rich has a :class:`~rich.text.Text` class you can use to mark up strings with color and style attributes. You can use a Text instance anywhere a string is accepted, which gives you a lot of control over presentation.
+
+You can consider this class to be like a string with marked up regions of text. Unlike a builtin ``str``, a Text instance is mutable, and most methods operate in-place rather than returning a new instance.
+
+One way to add a style to Text is the :meth:`~rich.text.Text.stylize` method which applies a style to a start and end offset. Here is an example::
+
+ from rich.console import Console
+ from rich.text import Text
+
+ console = Console()
+ text = Text("Hello, World!")
+ text.stylize("bold magenta", 0, 6)
+ console.print(text)
+
+This will print "Hello, World!" to the terminal, with the first word in bold magenta.
+
+Alternatively, you can construct styled text by calling :meth:`~rich.text.Text.append` to add a string and style to the end of the Text. Here's an example::
+
+ text = Text()
+ text.append("Hello", style="bold magenta")
+ text.append(" World!")
+ console.print(text)
+
+Since building Text instances from parts is a common requirement, Rich offers :meth:`~rich.text.Text.assemble` which will combine strings or pairs of string and Style, and return a Text instance. The follow example is equivalent to the code above::
+
+ text = Text.assemble(("Hello", "bold magenta"), " World!")
+ console.print(text)
+
+You can apply a style to given words in the text with :meth:`~rich.text.Text.highlight_words` or for ultimate control call :meth:`~rich.text.Text.highlight_regex` to highlight text matching a *regular expression*.
+
+
+Text attributes
+~~~~~~~~~~~~~~~
+
+The Text class has a number of parameters you can set on the constructor to modify how the text is displayed.
+
+- ``justify`` should be "left", "center", "right", or "full", and will override default justify behavior.
+- ``overflow`` should be "fold", "crop", or "ellipsis", and will override default overflow.
+- ``no_wrap`` prevents wrapping if the text is longer then the available width.
+- ``tab_size`` Sets the number of characters in a tab.
+
+A Text instance may be used in place of a plain string virtually everywhere in the Rich API, which gives you a lot of control in how text renders within other Rich renderables. For instance, the following example right aligns text within a :class:`rich.panel.Panel`::
+
+ from rich import print
+ from rich.panel import Panel
+ from rich.text import Text
+ panel = Panel(Text("Hello", justify="right"))
+ print(panel)
+
+