Text QML Type

Text {
    text: "**Hello** *World!*"
}
						

If height and width are not explicitly set, Text will try to determine how much room is needed and set it accordingly. Unless wrapMode is set, it will always prefer width to height (all text will be placed on a single line).

To fit a single line of plain text to a set width, you can use the elide 特性。

注意， 支持的 HTML 子集 is limited. Also, if the text contains HTML img tags that load remote images, the text is reloaded.

Text provides read-only text. For editable text, see TextEdit .

另请参阅 Fonts example .

特性文档编制

Sets the horizontal and vertical alignment of the text within the Text items width and height. By default, the text is vertically aligned to the top. Horizontal alignment follows the natural alignment of the text, for example text that is read from left to right will be aligned to the left.

The valid values for horizontalAlignment are Text.AlignLeft , Text.AlignRight , Text.AlignHCenter and Text.AlignJustify . The valid values for verticalAlignment are Text.AlignTop , Text.AlignBottom and Text.AlignVCenter .

Note that for a single line of text, the size of the text is the area of the text. In this common case, all alignments are equivalent. If you want the text to be, say, centered in its parent, then you will need to either modify the Item::anchors , or set horizontalAlignment to Text.AlignHCenter and bind the width to that of the parent.

When using the attached property LayoutMirroring::enabled to mirror application layouts, the horizontal alignment of text will also be mirrored. However, the property horizontalAlignment will remain unchanged. To query the effective horizontal alignment of Text, use the read-only property effectiveHorizontalAlignment .

These properties hold the padding around the content. This space is reserved in addition to the contentWidth and contentHeight .

The distance, in pixels, from the baseline origin of the first character of the text item, to the baseline origin of the first character in a text item occurring directly after this one in a text flow.

Note that the advance can be negative if the text flows from right to left.

Used to decide if the Text should use antialiasing or not. Only Text with renderType of Text.NativeRendering can disable antialiasing.

默认为 true .

This property specifies a base URL that is used to resolve relative URLs within the text.

Urls are resolved to be within the same directory as the target of the base URL meaning any portion of the path after the last '/' will be ignored.

The default value is the url of the QML file instantiating the Text item.

This property holds whether the text is clipped.

Note that if the text does not fit in the bounding rectangle, it will be abruptly chopped.

If you want to display potentially long text in a limited space, you probably want to use elide 代替。

文本颜色。

An example of green text defined using hexadecimal notation:

Text {
    color: "#00FF00"
    text: "green text"
}
						

An example of steel blue text defined using an SVG color name:

Text {
    color: "steelblue"
    text: "blue text"
}
						

Returns the height of the text, including height past the height that is covered due to there being more text than fits in the set height.

Returns the width of the text, including width past the width that is covered due to insufficient wrapping if WrapMode is set.

Set this property to elide parts of the text fit to the Text item's width. The text will only elide if an explicit width has been set.

This property cannot be used with rich text.

Eliding can be:

If this property is set to Text.ElideRight, it can be used with wrapped text. The text will only elide if maximumLineCount ，或 height has been set. If both maximumLineCount and height are set, maximumLineCount will apply unless the lines do not fit in the height allowed.

If the text is a multi-length string, and the mode is not Text.ElideNone , the first string that fits will be used, otherwise the last will be elided.

Multi-length strings are ordered from longest to shortest, separated by the Unicode "String Terminator" character U009C (write this in QML with "\u009C" or "\x9C" ).

Sets whether the font weight is bold.

Sets the capitalization for the text.

Text { text: "Hello"; font.capitalization: Font.AllLowercase }
									

Sets the family name of the font.

The family name is case insensitive and may optionally include a foundry name, for example "Helvetica [Cronyx]". If the family is available from more than one foundry and the foundry isn't specified, an arbitrary foundry is chosen. If the family isn't available a family will be set using the font matching algorithm.

Applies integer values to specific OpenType features when shaping the text based on the contents in features . This provides advanced access to the font shaping process, and can be used to support font features that are otherwise not covered in the API.

The font features are represented by a map from four-letter tags to integer values. This integer value passed along with the tag in most cases represents a boolean value: A zero value means the feature is disabled, and a non-zero value means it is enabled. For certain font features, however, it may have other interpretations. For example, when applied to the salt feature, the value is an index that specifies the stylistic alternative to use.

例如， frac font feature will convert diagonal fractions separated with a slash (such as 1/2 ) with a different representation. Typically this will involve baking the full fraction into a single character width (such as ½ ).

If a font supports the frac feature, then it can be enabled in the shaper as in the following code:

Text {
    text: "One divided by two is 1/2"
    font.family: "MyFractionFont"
    font.features: { "frac": 1 }
}
						

Multiple features can be assigned values in the same mapping. For instance, if you would like to also disable kerning for the font, you can explicitly disable this as follows:

Text {
    text: "One divided by two is 1/2"
    font.family: "MyFractionFont"
    font.features: { "frac": 1, "kern": 0 }
}
						

You can also collect the font properties in an object:

Text {
    text: "One divided by two is 1/2"
    font: {
        family: "MyFractionFont"
        features: { "frac": 1, "kern": 0 }
    }
}
						

注意： By default, Qt will enable and disable certain font features based on other font properties. In particular, the kern feature will be enabled/disabled depending on the font.kerning 特性为 QFont . In addition, all ligature features ( liga , clig , dlig , hlig ) will be disabled if a font.letterSpacing is set, but only for writing systems where the use of ligature is cosmetic. For writing systems where ligatures are required, the features will remain in their default state. The values set using font.features will override the default behavior. If, for instance, "kern" is set to 1, then kerning will always be enabled, regardless of whether the font.kerning property is set to false. Similarly, if it is set to 0 , it will always be disabled.

该特性在 Qt 6.6 引入。

另请参阅 QFont::setFeature ().

Sets the preferred hinting on the text. This is a hint to the underlying text rendering system to use a certain level of hinting, and has varying support across platforms. See the table in the documentation for QFont::HintingPreference 了解更多细节。

注意： This property only has an effect when used together with render type Text.NativeRendering.

Text { text: "Hello"; renderType: Text.NativeRendering; font.hintingPreference: Font.PreferVerticalHinting }
									

Sets whether the font has an italic style.

Enables or disables the kerning OpenType feature when shaping the text. Disabling this may improve performance when creating or changing the text, at the expense of some cosmetic features. The default value is true.

Text { text: "OATS FLAVOUR WAY"; font.kerning: false }
						

Sets the letter spacing for the font.

Letter spacing changes the default spacing between individual letters in the font. A positive value increases the letter spacing by the corresponding pixels; a negative value decreases the spacing.

Sets the font size in pixels.

使用此函数使字体设备从属。使用 pointSize to set the size of the font in a device independent manner.

Sets the font size in points. The point size must be greater than zero.

Sometimes, a font will apply complex rules to a set of characters in order to display them correctly. In some writing systems, such as Brahmic scripts, this is required in order for the text to be legible, but in for example Latin script, it is merely a cosmetic feature. Setting the preferShaping property to false will disable all such features when they are not required, which will improve performance in most cases.

默认值为 true。

Text { text: "Some text"; font.preferShaping: false }
						

Sets whether the font has a strikeout style.

Sets the style name of the font.

The style name is case insensitive. If set, the font will be matched against style name instead of the font properties font.weight , font.bold and font.italic .

Sets whether the text is underlined.

Applies floating point values to variable axes in variable fonts.

Variable fonts provide a way to store multiple variations (with different weights, widths or styles) in the same font file. The variations are given as floating point values for a pre-defined set of parameters, called "variable axes". Specific instances are typically given names by the font designer, and, in Qt, these can be selected using setStyleName() just like traditional sub-families.

In some cases, it is also useful to provide arbitrary values for the different axes. For instance, if a font has a Regular and Bold sub-family, you may want a weight in-between these. You could then manually request this by supplying a custom value for the "wght" axis in the font.

Text {
    text: "Foobar"
    font.family: "MyVariableFont"
    font.variableAxes: { "wght": (Font.Normal + Font.Bold) / 2.0 }
}
						

If the "wght" axis is supported by the font and the given value is within its defined range, a font corresponding to the weight 550.0 will be provided.

There are a few standard axes than many fonts provide, such as "wght" (weight), "wdth" (width), "ital" (italic) and "opsz" (optical size). They each have indivdual ranges defined in the font itself. For instance, "wght" may span from 100 to 900 ( QFont::Thin to QFont::Black ) whereas "ital" can span from 0 to 1 (from not italic to fully italic).

A font may also choose to define custom axes; the only limitation is that the name has to meet the requirements for a QFont::Tag (sequence of four latin-1 characters.)

By default, no variable axes are set.

注意： In order to use variable axes on Windows, the application has to run with either the FreeType or DirectWrite font databases. See the documentation for QGuiApplication::QGuiApplication () for more information on how to select these technologies.

This property was introduced in Qt 6.7.

另请参阅 QFont::setVariableAxis ().

The requested weight of the font. The weight requested must be an integer between 1 and 1000, or one of the predefined values:

Text { text: "Hello"; font.weight: Font.DemiBold }
									

Sets the word spacing for the font.

单词间距改变单个单词之间的默认间距。正值按相应像素数量递增单词间距，而负值相应递减单词间间距。

The bold state of the font info that has been resolved for the current font and fontSizeMode . This is true if the weight of the resolved font is bold or higher.

The family name of the font that has been resolved for the current font and fontSizeMode .

The italic state of the font info that has been resolved for the current font and fontSizeMode .

The pixel size of the font info that has been resolved for the current font and fontSizeMode .

The pointSize of the font info that has been resolved for the current font and fontSizeMode .

The style name of the font info that has been resolved for the current font and fontSizeMode .

The weight of the font info that has been resolved for the current font and fontSizeMode .

This property specifies how the font size of the displayed text is determined. The possible values are:

The font size of fitted text has a minimum bound specified by the minimumPointSize or minimumPixelSize property and maximum bound specified by either the font.pointSize or font.pixelSize 特性。

Text { text: "Hello"; fontSizeMode: Text.Fit; minimumPixelSize: 10; font.pixelSize: 72 }
						

If the text does not fit within the item bounds with the minimum font size the text will be elided as per the elide 特性。

若 textFormat property is set to Text.RichText , this will have no effect at all as the property will be ignored completely. If textFormat 被设为 Text.StyledText , then the property will be respected provided there is no font size tags inside the text. If there are font size tags, the property will still respect those. This can cause it to not fully comply with the fontSizeMode setting.

This property contains the link string when the user hovers a link embedded in the text. The link must be in rich text or HTML format and the hoveredLink string provides access to the particular link.

另请参阅 linkHovered and linkAt ().

Returns the number of lines visible in the text item.

This property is not supported for rich text.

另请参阅 maximumLineCount .

Sets the line height for the text. The value can be in pixels or a multiplier depending on lineHeightMode .

The default value is a multiplier of 1.0. The line height must be a positive value.

This property determines how the line height is specified. The possible values are:

The color of links in the text.

This property works with the StyledText textFormat , but not with RichText. Link color in RichText can be specified by including CSS style tags in the text.

Set this property to limit the number of lines that the text item will show. If elide is set to Text.ElideRight, the text will be elided appropriately. By default, this is the value of the largest possible integer.

This property is not supported for rich text.

另请参阅 lineCount and elide .

This property specifies the minimum font pixel size of text scaled by the fontSizeMode 特性。

若 fontSizeMode is Text.FixedSize or the font.pixelSize is -1 this property is ignored.

This property specifies the minimum font point size of text scaled by the fontSizeMode 特性。

若 fontSizeMode is Text.FixedSize or the font.pointSize is -1 this property is ignored.

Override the default rendering type for this component.

支持的渲染类型是：

选择 Text.NativeRendering if you prefer text to look native on the target platform and do not require advanced features such as transformation of the text. Using such features in combination with the NativeRendering render type will lend poor and sometimes pixelated results.

Both Text.QtRendering and Text.CurveRendering are hardware-accelerated techniques. QtRendering is the faster of the two, but uses more memory and will exhibit rendering artifacts at large sizes. CurveRendering should be considered as an alternative in cases where QtRendering does not give good visual results or where reducing graphics memory consumption is a priority.

The default rendering type is determined by QQuickWindow::textRenderType ().

Override the default rendering type quality for this component. This is a low-level customization which can be ignored in most cases. It currently only has an effect when renderType is Text.QtRendering .

The rasterization algorithm used by Text.QtRendering may give artifacts at large text sizes, such as sharp corners looking rounder than they should. If this is an issue for specific text items, increase the renderTypeQuality to improve rendering quality, at the expense of memory consumption.

The renderTypeQuality may be any integer over 0, or one of the following predefined values

This property was introduced in Qt 6.0.

Set an additional text style.

Supported text styles are:

Row {


文本


 {

font

.pointSize:

24

;

text

:

"Normal"

 }


文本


 {

font

.pointSize:

24

;

text

:

"Raised"

;

style

:

文本

.

Raised

;

styleColor

:

"#AAAAAA"

 }


文本


 {

font

.pointSize:

24

;

text

:

"Outline"

;

style

:

文本

.

Outline

;

styleColor

:

"red"

 }


文本


 {

font

.pointSize:

24

;

text

:

"Sunken"

;

style

:

文本

.

Sunken

;

styleColor

:

"#AAAAAA"

 }
}