UI Files

Almost all of the UI file tags have attributes, and it is good to know the following general rules:

• All dimensions provided as attribute values are in pixels.
• File names are relative to the root data directory.
• Colors are in the Web format, that is, #RRGGBB, or in the #RRGGBBAA format. Here RR, GG, BB, and AA correspond to a hexadecimal color component value—red, green, blue, and alpha, respectively; values range from 00 to FF.
• Boolean values can be set in different forms. For FALSE use: 0, false, no. For TRUE use: 1, true, yes.

<sprite align="overlap,top,right" pos_x="10" pos_y="-42" texture="data/core/gui/unigine.png"/>

You can use standard XML comments syntax. Comment blocks will be skipped during processing of a UI file. An example comment:

<!-- 
This section will be omitted
-->

A unique name of the widget. If the export flag is set to yes, the widget will be referred to in scripts by this name. The name may contain a namespace specification and/or an array index.

<!-- The following widget will be accessible via scripts as foo::bar -->
<button name="foo::bar" export="yes"/>
<!-- This widget will be accessible via scripts as fooArray[2] -->
<button name="fooArray[2]" export="yes"/>

A name of a widget that receives the focus next, if the user presses the TAB key. If this attribute is omitted, the widget that immediately follows the current one will receive the focus.

<!-- Custom focus order: button_0 → button_2 → button_1 -->
<button name="button_0" next="button_2"/>
<button name="button_1" next="button_0"/>
<button name="button_2" next="button_1"/>

A set of alignment flags for the widget. Flags are separated by commas. Available flags are:

• center
  Centers the widget in both dimensions in the available space.

  

  Source code (XML)

  <window name="Test::window" width="150" height="150" export="1" sizeable="1">
  	<text>Window Title</text>
  	<label align="center">
  		<text size="20">Label Center</text>
  	</label>
  </window>

• left
  Aligns the widget to the left side.

  

  Source code (XML)

  <label align="left">
  	<text size="20">Label Left</text>
  </label>

• right
  Aligns the widget to the right side.

  

  Source code (XML)

  <label align="right">
  	<text size="20">Label Right</text>
  </label>

• top
  Aligns the widget to the top.

  

  Source code (XML)

  <label align="top">
  	<text size="20">Label Top</text>
  </label>

• bottom
  Aligns the widget to the bottom.

  

  Source code (XML)

  <label align="bottom">
  	<text size="20">Label Bottom</text>
  </label>

• expand
  Justifies the text in the available space.

  

  Source code (XML)

  <vscroll name="Test::vscroll_0" export="1" align="expand"/>
  <vscroll name="Test::vscroll_1" export="1"/>

• overlap
  Places the widget over the contents of the parent container.

  

  Source code (XML)

  <label align="left">
  	<text size="35">Label</text>
  </label>
  <button name="Test::button" export="1"  align="overlap">
  	<text>Button</text>
  </button>

• background
  Places the widget underneath other widgets in the same container. Use this flag together with overlap one.
• fixed
  Places the widget in focus on the background or on the foreground (depending on where it was created). This flag is valid only if overlap flag is also set. Non-fixed overlapping windows can pop over the fixed ones, while the latter cannot do it.

A flag that specifies whether the widget is enabled. An enabled widget receives keyboard and mouse events; a disabled widget does not. Some widgets display themselves differently when they are disabled (usually they are dimmed). If a container is disabled, its content is also disabled. Acceptable values:

• 0 or no
  The widget is disabled.
• 1 or yes
  The widget is enabled.

<button name="Test::button" export="1"  enabled="1">
	<text size="15">Button Enabled</text>
</button>
<button name="Test::disabled_button" export="1" enabled="0">
	<text size="15">Button Disabled</text>
</button>

A flag that specifies whether the widget is hidden or not. When a widget is hidden, it is not rendered, and other widgets in the same container are re-arranged. Acceptable values:

• 0 or no
  The widget renders normally.
• 1 or yes
  The widget is hidden.

<label>
	<text size="20" rich="1">Label 0</text>
</label>
<button name="Test::button" export="1"  hidden="1">
	<text size="15">Button Hidden</text>
</button>
<label>
	<text size="20" rich="1">Label 1</text>
</label>
<label>
	<text size="20" rich="1">Label 2</text>
</label>
<button name="Test::disabled_button" export="1" hidden="0">
	<text size="15">Button Rendered</text>
</button>

The x-coordinate of the widget relative to its parent container. It takes effect only if the overlap alignment flag is set.

<button name="Test::button" export="1" align="overlap" pos_x="40">
	<text size="15">Button</text>
<button>

The y-coordinate of the widget relative to its parent container. It takes effect only if the overlap alignment flag is set.

<button name="Test::button" export="1" align="overlap" pos_y="30">
	<text size="15">Button</text>
<button>

Width of a widget.

Height of a widget.

A flag that specifies whether to export a reference to the widget or not. If yes, the widget will be exported with the name set using the name attribute. The default value is 0. Acceptable values:

• 0 or no (default)
  The widget will not be exported.
• 1 or yes
  The widget will be exported.

A flag indicating whether a container is referenced by the reference tag. Acceptable values:

• no reference flag or 0 (default)
  The container will be shown in the UI as usual.
• 1
  The container will not be shown in the UI and you will be able to refer it by using the reference tag.

Many widgets and containers have a text child, which provides some formatting capabilities.

Attributes:

• rich
  Whether the text inside the tag is formatted or plain. The default is 0 (boolean), which corresponds to plain.
• face
  Path to a TrueType font file, which will be used by default.
  Source code (XML)

  <text face="fontb.ttf">Text</text>

• size
  Default font size (pixels).
  Source code (XML)

  <text size="20">Text</text>

• color
  Default font color.
  Source code (XML)

  <text color="#ff0000">Text</text>

• permanent
  Whether a text color should be changed when the widget is disabled (non active), transparent (enabled option on non-active window), or widget loses focus. The default is 0 (not to change the color).

  For example, when the window is disabled, the second label doesn't change its color.

  

  Source code (XML)

  <window name="Test::window" width="150" height="150" export="1" sizeable="1" enabled="0">
  	<text>Window Title</text>
  	<label><text permanent="0">Label 0</text></label>
  	<label><text permanent="0">Label 1</text></label>
  </window>

• outline
  Whether the text should be outlined. The default is 0 (boolean), which corresponds to no outlining.

  

  The outlined text is represented on the right picture.

  Source code (XML)

  <label><text size="20" outline="1">Label 0</text></label>

• wrap
  Whether the text should be wrapped around, if it does not fit width of the container. The default is 0 (boolean), which corresponds to no wrapping.

  

  Source code (XML)

  <label><text size="20" wrap="1">Long text to wrap</text></label>

• hspacing
  Horizontal spacing (in pixels) between letters. The default is 0.

  

  Source code (XML)

  <label align="center"><text size="20" hspacing="8">Text</text></label>

• vspacing
  Vertical spacing (in pixels) between text lines. The default is 0.

  

  Source code (XML)

  <label align="center"><text size="20" vspacing="15" rich="1">Text<br/>Text<br/>Text</text></label>

• hoffset
  Horizontal text offset (in pixels). The default is 0 (no offset).

  

  Source code (XML)

  <label align="center"><text size="20" hoffset="35">Text</text></label>

• voffset
  Vertical text offset (in pixels). The default is 0 (no offset).

  

  Source code (XML)

  <label align="center"><text size="20" hoffset="35" voffset="35">Text</text></label>

• translate
  Whether the text can be translated. The default is 1 (boolean), which means that the text depends on the selected language.

Enables to change font characteristics of widgets and containers. This tag can be applied to a group of widgets or containers. The list of attributes is the same as for the text tag except the translate attribute. This attribute should be applied to a text or a label individually (see the example below).

Also the font size can be calculated relatively to its current size. For example:

<font size="+10">Larger</font>
<font size="-4">Smaller</font>
<font size="%200">Same or smaller</font>

The following example demonstrates how to apply the font to the group of widgets:

<vbox>
	<font size="13" rich="1" outline="1">
		<align align="left">
			<label face="fontb.ttf" size="15" color="#ff9900">Labels</label>
			<label translate="1">Label <b>1</b></label><!-- this label can be translated -->
			<label>Label <b>2</b></label>
			<label><font size="17">Label of bigger size</font></label>
			<label>Label <b>4</b></label>
		</align>
	</font>	
</vbox>

Font tags can be nested. However, the following restrictions exist:

• If the nested font tag is applied to a widget or a container, font properties are not inherited.
  Source code (XML)

  <font size="13" rich="1" outline="1">
  	<align align="left">
  		<label face="fontb.ttf" size="15" color="#ff9900">Labels</label>
  		<label>Label <b>1</b></label>
  		<font size="20" rich="1">
  			<label>Label <b>2</b></label>
  		</font>
  	</align>
  </font>

  In the result, Label 2 will not be outlined:

  

• If the font tag is applied to the rich text inside a widget or a container, font properties are inherited.
  Notice

  In this case, the list of font attributes will differ. See the details below.
  Source code (XML)

  <font size="13" rich="1" outline="1">
  	<align align="left">
  		<label>Label <b>1</b></label>
  		<label><font size="17">Label of bigger size</font></label>
  	</align>
  </font>

  In the result, the font characteristics will be inherited:

  

Unlike the align attribute of the text tag, the align tag can be applied to a group of widgets.

Attributes:

• align
  Acceptable values are center, left, right.

For example:

<align align="right">
	<label><text>Title1</text></label>
	<edittext name="Test::edittext_1" export="1" width="100" height="100">
		<text>EditLine1</text>
	</edittext>
	<label><text>Title2</text></label>
	<edittext name="Test::edittext_2" export="1" width="100" height="100">
		<text>EditLine2</text>
	</edittext>
</align>

If the rich attribute of the text or font tag is equal to 1, yes or true, the following tags and entities can be used to format the text inside them:

br

<text rich="1">Text 1 <br/>
Text 2<br>Text 3</text>

p

center

font

<label>
	<text rich="1">
		<font size="20" color="#ff0000">A big red text</font> and a text of the default style.<br/>
		<font face="fontb.ttf" size="20">You can also change the font face.</font><br/>
		<font color="#00ff00">Here is a green text with a <font size="10">small tail.</font></font>
	</text>
</label>

sub

<text size="20" rich="1">Text <sub>Subscript text</sub></text>

sup

<text size="20" rich="1">Text <sup>Superscript text</sup></text>

i

b

bi

table

<text size="20" rich="1">
	<table space="10" color="#ffffff">
		<tr height="45">
			<td>Row 0 Column 0</td>
			<td>Row 0 Column 1</td>
		</tr>
		<tr height="45">
			<td>Row 1 Column 0</td>
			<td>Row 1 Column 1</td>
		</tr>
	</table>
</text>

xy

<text size="20" rich="1"><xy x="12" y="24"/>Text</text>

<text rich="1" size="20">
	This is a <xy x="%50" y="%100"/>long text
</text>

image

<text rich="1" size="15">
	Image with a long description: <image src="brush_square.png" x="%100" y="%100"/>
</text>

right

<text rich="1">Text<right/>Text</text>

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