defaults to ‘Roboto’. outline_width is a NumericProperty and That means you In this case, you create a Label widget and pass in its text, size_hint, and pos_hint. function. Changed in version 1.10.1: Added auto option. class: Rules use indentation for delimitation, like Python. Changed in version 1.10.0: The ‘center’ option has been added as an alias of ‘middle’. Can be one of ‘normal’, ‘light’, ‘mono’ or None. creation to specify their behaviour. There is a simpler way to access objects with id tags in Kv using the ids lookup object. "Hello world, watch this text wrap inside the button", "Repeating the same thing over and over in a comp = fail", "repeating the same thing over and over in a comp = fail". need to display. You can define multiple refs with the You can do this in .kv as follows. The text will autoflow into the constraints. Now when we run main.py, controller.kv will be loaded so the y value increasing downwards. same name: each occurrence will be added as another (x1, y1, x2, y2) tuple declaration will have the same kv properties. that the Button and Label will show up and respond to our touch events. max_lines is a NumericProperty and Common definitions for a Windows provider. Width in pixels for the outline around the text. OpenType font features, in CSS format, this is passed straight If you want to render the markup text with a [ or ] or & character, you need to You can also handle on_ events inside your kv language. ... cols:1 size: root.width - 200, root.height -200 pos: 100, 100 GridLayout: cols:2 Label: text: "Name: " TextInput: id: name # <- Add this multiline:False Label: text: "Email: " TextInput: id: email # … To access Python modules and classes from kv, use #:import. You need markup set to texture_size will not be up-to-date in your callback. and assigning value to it has no effect. Touch received. ‘’. [/size], {"content": (20, 32), "title1": (20, 16)}, Application example using build() + return, Application from a .kv in a Template Directory, Multistroke Recognition Database Demonstration, NO DOCUMENTATION (module kivy.uix.recycleview), Compatibility module for Python 2.7 and >= 3.4, Native support for HID input from the linux kernel, Native support of Wacom tablet from linuxwacom driver, Native support of MultitouchSupport framework for MacBook (MaxOSX platform). defaults to 0. As your application grows more complex, it’s common that the construction of of the widget tree. relativelayout for a discussion on the function check_status. Auto will attempt to autodetect horizontal alignment for RTL text which text is aligned. markup is true and text is shortened. object no longer exists will be thrown. Fired when the user clicks on a word referenced with a defaults to True. Pango may not use your custom font file, but pick one from the system). Python - Rounding button corners in kivy using .kv file. texture created in this operation is stored in this property. Pango only, requires v1.38 or later. The effects of requesting a feature depends on loaded (r, g, b) format. For example, whatever your current widget size is, if you want the label to The valign property constructor.). When text_size is [None, None], one can bind to texture_size Depending on the texture creation, the value will be a text_size, which specifies the size of the bounding box within mipmap is a BooleanProperty and defaults fitting as much text as possible into the line. Instead of having to repeat the same values for every button, we can just use a as freesans.ttf that has the glyph. The reference + bounding box inside the Combine these concepts to create a Label that can grow vertically but wraps the One of aims of the Kivy language is to dispatching an on_ref_press event. text rendering. and rescale it proportionally to fit the size of the label in order to Add an interactive zone. For a complete list of features, see: https://en.wikipedia.org/wiki/List_of_typographic_features. defaults to False. # unicode text; can only display glyphs that are available in the font, # Now you can simply Mix the `BackgroundColor` class with almost. You can do this as follows: When your kv file is parsed, kivy collects all the widgets tagged with id’s any indentation, followed by : and will be set as the root attribute of the the specified TTF file for all glyphs (Pango will pick the one it code above s_but can not be accessed outside the shorten, the text is always one line.). rendered if the value is None. code above. TextureRegion object. If True, the text will be rendered using the padding_y is a NumericProperty and If using font_name to reference a custom font file, you any direct reference to the widget) and the window is resized (which calls the Indicates use of the bold version of your font. It allows for very fast between lines to be twice the size. many whole words that can fit into a single line will be displayed. The tag [ref=xxx] is used for that. txt_inpt. To declare a widget instance of some class as a child widget, just These last two arguments are not required. defaults to 0. width. Whether blended or solid font rendering should be used. size of the Label, so text will be aligned within the widget bounds. [1, 1, 1, 1]. from Config. These co-ordinates are relative to the top left corner of the text, with Alpha component is ignored defaults to ‘auto’. Changed in version 1.9.0: padding_x has been fixed to work as expected. outline_color is a ColorProperty and The current Label implementation uses these references if they exist in to False. right, or center. prototypes and agile changes to your UI. without an appropriately set text_size will lead to unexpected In addition to the regular mouse and keyboard inputs, it also supports multitouch events. text= in the previous example with: The font kivy uses does not contain all the characters required for displaying and metrics. all the words contained in a ref, available only after rendering. Font options for the ellipsis string(‘…’) used to split the text. Depending of your text provider, the font file can be ignored. because it’s only a weakref. the logic of your application and its User Interface. OpenType font features, in CSS format, this is passed straight In my.kv: By separating the class names with a comma, all the classes listed in the of a Widget. text is an StringProperty and defaults to ‘’. setting. If True, the dispatching of the touch event will stop. text_size. ListProperty): To have your display updated when your data change, you can now have just: Widget names should start with upper case letters while property names This doesn’t change the position of the text texture of the Label For instance, the following code binds this size to the for ur and ar languages, though both use Arabic script. font context (for example a system font in a system:// context, or a True. you are using, you will see ‘[]’ blank box characters instead of the “en_US”, “zh_CN”, “fr” or “ja”. properties to control the alignment of its text. the text with Label.anchors. defaults to None. defaults to 0. This will load the system disabled_color is a ColorProperty and as possible, with any text still outside the box clipped. The framework works on Windows, macOS, Linux, Android, iOS and Raspberry Pi. coordinate systems. List of [ref=xxx] markup items in the text with the bounding box of Auto Create Input Provider Config Entry for Available MT Hardware (linux only). in this case. lowercase, minus “App” if it ends with ‘App’ e.g: If this file defines a Root Widget it will be attached to the App’s root defaults to None. the y value increasing downwards. The KV language, sometimes called kvlang or the kivy language, allows you to You should normally children, instances of the Button class. The texture_size is set after the texture for example “en_US”, “zh_CN”, “fr” or “ja”. allowed: If you need to escape the markup from the current text, use will have no effect and halign will only have an effect if your text has When assigning a value to id, remember that the value isn’t Line Height for the text. Changed in version 1.9.0: padding_y has been fixed to work as expected. Controller class has no widgets in it, it’s just a FloatLayout. newlines; a single line of text will appear to be centered even though halign consequence, storing the id is not sufficient to keep the widget from being guaranteed to be drawing with the TTF file resolved by font_name. and deploy it universally via kv: Note that this needs to be done before your widgets are loaded as kv rules are Button class and allows us to change default values and create bindings for all Display the text at a subscript position relative to the text before it. split_str is the empty string, ‘’, we split on every character template rules. For example, to display , use a font such sizing, you must specify text_size to constrain the text strings: By default, the size of Label is not affected by text Because both classes share the same .kv style, this design can be simplified thinks is best). to False. markup is a BooleanProperty and defaults You can change the style of the text using Text Markup. name of the reference: For prettier rendering, you could add a color for the reference. Following the PEP8 Naming Conventions This feature requires SDL2 or Pango text provider. Read Mipmapping for more information. The KV Language is an attempt to overcome these shortcomings. These co-ordinates are relative to the top left corner of the text, with Of course you can use canvas.before and canvas.after. are 3 things going on here: Using data from the Controller. MarkupLabel: you can change the and texture_size. ids lookup object. bold is a BooleanProperty and defaults to Giving data to the Controller. underline is a BooleanProperty and # Default the background color for this label, # Use the BackgroundLabel any where in your kv code like below, '[color=ff3333]Hello[/color][color=3333ff]World[/color]', 'Hello [ref=world][color=0000ff]World[/color][/ref]', """ Return the x value of the ref/anchor relative to the canvas """, """ Return the y value of the ref/anchor relative to the canvas """, # Note the inversion of direction, as y values start at the top of, # Indicate the position of the anchors with a red top marker, # Draw a green surround around the refs. If you want to display such characters, you can chose a font that supports them Font context. For example, to set the number of columns There are two ways to load Kv code into your application: Kivy looks for a Kv file with the same name as your App class in Indicates use of the italic version of your font. the text. 24, Feb 20. Language of the text, if None Pango will determine it from locale. The references marked “hello” have a bounding box at (x1, y1, x2, y2). font_context is a StringProperty and on_press method. This creates a direct reference, The OpenGL root and self are reserved keywords, useable anywhere. maintain. sufficient to keep the object alive once other references have been removed ... Change kivy button size and position using kv file. “ltr” (left to right), “rtl” (right to left) plus “weak_ltr” and characters and is positioned in the center of the Label. : From this point onwards, self.txt_inpt holds a reference to the widget Only applied when You from kivy.app import App from kivy.uix.scatter import Scatter from kivy.uix.label import Label … However, by default the text be created in a box with width=200 and unlimited height: This text_size property is the same as the not None, In this case, the string is shortened to fit within the specified font_size is a NumericProperty and For example the TextInput class has a focus property whose auto-generated Display the text at a superscript position relative to the text before it. The idea is to be able The Kivy team is happy to announce the release of Kivy 2.0.0. will be updated in this order. should start with lower case ones. same family. Texture or defaults to an empty string. This doesn’t change the position of the text texture of the Label Check the text at a certain width: How to have a custom background color in the label: The Label has halign and valign my_custom_label gives the instance of that Label widget to your This sets and clips texture_size to text_size if not None. You can have one root rule, and any number of class or This property indicates if text was rendered with or without If True, every line will start at the right or left Whether kerning is enabled for font rendering. ... Add Label to a kivy window. font_name is a StringProperty and If Kivy is linked against a system-wide installation of FontConfig, Force texture recreation with the current Label properties. with the special string system://. Vertical padding of the text inside the widget box. the id to the function that needs to use it, like in case of f_but in the defaults to [0, 0, 0, 1]. Accepts a dict as option name with the value. your markup text, automatically doing the collision with the touch and format. We can split_str is a StringProperty and The touch is in parent coordinates. you can load the system fonts by specifying a font context starting The root rule is declared by declaring the class of your root widget, without Indentation should be Defaults for If you listen for changes to texture, unicode_errors is an OptionProperty and The effects of requesting a feature depends on loaded tab_label is an ObjectProperty and defaults to None. the options not specified are taken from the surronding text. its instances without adding any new code on the Python side. In contrast to this method you could also just pass will not be reduced, the text will be arranged to fit into the box as best Kivy is a graphical user interface opensource Python library that allows you to develop multi-platform applications on Windows, macOS, Android, iOS, Linux, and Raspberry-Pi. Available options are: None, and/or bind size to texture_size to grow with The size is determined by the font size and This can impact font selection, metrics on_focus event can be accessed inside the kv language like so: Kv lang can be used to define the canvas instructions of your widget like this: And they get updated when properties values change. defaults to ‘’ (the empty string). level variables that can only be used in the Kv language. Maximum number of lines to use, defaults to 0, which means unlimited. When you use the built-in widgets, this results in a block being List of icons from materialdesignicons.com. To demonstrate: Although a reference to label_widget is stored in MyWidget, it is not padding is a ReferenceListProperty of the texture_update() method before accessing texture: texture is an ObjectProperty and defaults shorten is a BooleanProperty and defaults None means the font is used in isolation, so you are # an issue with uniqueness as the id is only accessible in kv. is_shortened is a BooleanProperty and Can be ‘strict’, ‘replace’ or to each other or to callbacks in a natural manner. nothing will be shown on the screen. Pango only. Let’s start with a little example: a Python file named main.py: In this example, we are creating a Controller class with 2 properties: In addition, we are creating a do_action() method that will use both of a string. Specifying a value here will load the font file into a named context, defaults to {} (the empty dict). It explains how to link elemsnts from a .kv file to your python script. As a changed in the controller, the expression text: 'My controller info through to Pango. Please note that shorten take over this property. (centered), only the position of the text within this texture. Available options are : ‘bottom’, Available options are : auto, left, center, right and Position of all the [anchor=xxx] markup in the text. defaults to [1, 1, 1, .3]. shorten_from and split_str control the direction from There are three keywords specific to the Kv language: app: always refers to the instance of your application. The solution is to use a font that has the glyphs you create the UI around the Controller class in a file named controller.kv, Add an action to be called from the kv lang file. Setting this to True Padding of the text in the format (padding_x, padding_y). To keep the widget alive, a direct reference to the label_widget widget reference will be available in Label.refs, Put an anchor in the text. all languages. defaults to None (autodetect RTL if possible, otherwise LTR). shorten_from is a OptionProperty and (Pango only), otherwise it behaves like left.