样式

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样式

调用 Obj.style() 和 Obj.setStyle() 方法来获取和设置样式。

示例

import * as lv from 'lv'

let obj = lv.Obj( lv.screen() )

// 对象类型参数，设置多个样式
obj.setStyle({
    "border-width": 1 ,                 // 边线宽
    "border-color": lv.color(255,0,0) , // 边线颜色
    "border-opa": 255 ,                 // 边线不透明度
})
// 设置单个样式
obj.setStyle("width","100%")

console.log( "height: ", obj.style("height") )

样式属性

width (num)

Sets the width of object. Pixel, percentage and LV_SIZE_CONTENT values can be used. Percentage values are relative to the width of the parent's content area.

min-width (num)

Sets a minimal width. Pixel and percentage values can be used. Percentage values are relative to the width of the parent's content area.

max-width (num)

Sets a maximal width. Pixel and percentage values can be used. Percentage values are relative to the width of the parent's content area.

height (num)

Sets the height of object. Pixel, percentage and LV_SIZE_CONTENT can be used. Percentage values are relative to the height of the parent's content area.

min-height (num)

Sets a minimal height. Pixel and percentage values can be used. Percentage values are relative to the width of the parent's content area.

max-height (num)

Sets a maximal height. Pixel and percentage values can be used. Percentage values are relative to the height of the parent's content area.

length (num)

Its meaning depends on the type of the widget. For example in case of lv_scale it means the length of the ticks.

x (num)

Set the X coordinate of the object considering the set align. Pixel and percentage values can be used. Percentage values are relative to the width of the parent's content area.

y (num)

Set the Y coordinate of the object considering the set align. Pixel and percentage values can be used. Percentage values are relative to the height of the parent's content area.

Set the alignment which tells from which point of the parent the X and Y coordinates should be interpreted. The possible values are: LV_ALIGN_DEFAULT, LV_ALIGN_TOP_LEFT/MID/RIGHT, LV_ALIGN_BOTTOM_LEFT/MID/RIGHT, LV_ALIGN_LEFT/RIGHT_MID, LV_ALIGN_CENTER. LV_ALIGN_DEFAULT means LV_ALIGN_TOP_LEFT with LTR base direction and LV_ALIGN_TOP_RIGHT with RTL base direction.

transform-width (num)

Make the object wider on both sides with this value. Pixel and percentage (with lv_pct(x)) values can be used. Percentage values are relative to the object's width.

transform-height (num)

Make the object higher on both sides with this value. Pixel and percentage (with lv_pct(x)) values can be used. Percentage values are relative to the object's height.

translate-x (num)

Move the object with this value in X direction. Applied after layouts, aligns and other positioning. Pixel and percentage (with lv_pct(x)) values can be used. Percentage values are relative to the object's width.

translate-y (num)

Move the object with this value in Y direction. Applied after layouts, aligns and other positioning. Pixel and percentage (with lv_pct(x)) values can be used. Percentage values are relative to the object's height.

transform-scale-x (num)

Zoom an objects horizontally. The value 256 (or LV_SCALE_NONE) means normal size, 128 half size, 512 double size, and so on

transform-scale-y (num)

Zoom an objects vertically. The value 256 (or LV_SCALE_NONE) means normal size, 128 half size, 512 double size, and so on

transform-rotation (num)

Rotate an objects. The value is interpreted in 0.1 degree units. E.g. 450 means 45 deg.

transform-pivot-x (num)

Set the pivot point's X coordinate for transformations. Relative to the object's top left corner'

transform-pivot-y (num)

Set the pivot point's Y coordinate for transformations. Relative to the object's top left corner'

transform-skew-x (num)

Skew an object horizontally. The value is interpreted in 0.1 degree units. E.g. 450 means 45 deg.

transform-skew-y (num)

Skew an object vertically. The value is interpreted in 0.1 degree units. E.g. 450 means 45 deg.

pad-top (num)

Sets the padding on the top. It makes the content area smaller in this direction.

pad-bottom (num)

Sets the padding on the bottom. It makes the content area smaller in this direction.

pad-left (num)

Sets the padding on the left. It makes the content area smaller in this direction.

pad-right (num)

Sets the padding on the right. It makes the content area smaller in this direction.

pad-row (num)

Sets the padding between the rows. Used by the layouts.

pad-column (num)

Sets the padding between the columns. Used by the layouts.

margin-top (num)

Sets the margin on the top. The object will keep this space from its siblings in layouts.

margin-bottom (num)

Sets the margin on the bottom. The object will keep this space from its siblings in layouts.

margin-left (num)

Sets the margin on the left. The object will keep this space from its siblings in layouts.

margin-right (num)

Sets the margin on the right. The object will keep this space from its siblings in layouts.

bg-color (color)

Set the background color of the object.

bg-opa (num)

Set the opacity of the background. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

bg-grad-color (color)

Set the gradient color of the background. Used only if grad_dir is not LV_GRAD_DIR_NONE

bg-grad-dir (num)

Set the direction of the gradient of the background. The possible values are LV_GRAD_DIR_NONE/HOR/VER.

bg-main-stop (num)

Set the point from which the background color should start for gradients. 0 means to top/left side, 255 the bottom/right side, 128 the center, and so on

bg-grad-stop (num)

Set the point from which the background's gradient color should start. 0 means to top/left side, 255 the bottom/right side, 128 the center, and so on

bg-main-opa (num)

Set the opacity of the first gradient color

bg-grad-opa (num)

Set the opacity of the second gradient color

bg-grad (ptr)

Set the gradient definition. The pointed instance must exist while the object is alive. NULL to disable. It wraps BG_GRAD_COLOR, BG_GRAD_DIR, BG_MAIN_STOP and BG_GRAD_STOP into one descriptor and allows creating gradients with more colors too. If it's set other gradient related properties will be ignored'

bg-image-src (ptr)

Set a background image. Can be a pointer to lv_image_dsc_t, a path to a file or an LV_SYMBOL_...

bg-image-opa (num)

Set the opacity of the background image. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

bg-image-recolor (color)

Set a color to mix to the background image.

bg-image-recolor-opa (num)

Set the intensity of background image recoloring. Value 0, LV_OPA_0 or LV_OPA_TRANSP means no mixing, 255, LV_OPA_100 or LV_OPA_COVER means full recoloring, other values or LV_OPA_10, LV_OPA_20, etc are interpreted proportionally.

bg-image-tiled (num)

If enabled the background image will be tiled. The possible values are true or false.

border-color (color)

Set the color of the border

border-opa (num)

Set the opacity of the border. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

border-width (num)

Set the width of the border. Only pixel values can be used.

border-side (num)

Set only which side(s) the border should be drawn. The possible values are LV_BORDER_SIDE_NONE/TOP/BOTTOM/LEFT/RIGHT/INTERNAL. OR-ed values can be used as well, e.g. LV_BORDER_SIDE_TOP | LV_BORDER_SIDE_LEFT.

border-post (num)

Sets whether the border should be drawn before or after the children are drawn. true: after children, false: before children

outline-width (num)

Set the width of the outline in pixels.

outline-color (color)

Set the color of the outline.

outline-opa (num)

Set the opacity of the outline. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

outline-pad (num)

Set the padding of the outline, i.e. the gap between object and the outline.

shadow-width (num)

Set the width of the shadow in pixels. The value should be >= 0.

shadow-offset-x (num)

Set an offset on the shadow in pixels in X direction.

shadow-offset-y (num)

Set an offset on the shadow in pixels in Y direction.

shadow-spread (num)

Make the shadow calculation to use a larger or smaller rectangle as base. The value can be in pixel to make the area larger/smaller

shadow-color (color)

Set the color of the shadow

shadow-opa (num)

Set the opacity of the shadow. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

image-opa (num)

Set the opacity of an image. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

image-recolor (color)

Set color to mixt to the image.

image-recolor-opa (num)

Set the intensity of the color mixing. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

line-width (num)

Set the width of the lines in pixel.

line-dash-width (num)

Set the width of dashes in pixel. Note that dash works only on horizontal and vertical lines

line-dash-gap (num)

Set the gap between dashes in pixel. Note that dash works only on horizontal and vertical lines

line-rounded (num)

Make the end points of the lines rounded. true: rounded, false: perpendicular line ending

line-color (color)

Set the color of the lines.

line-opa (num)

Set the opacity of the lines.

arc-width (num)

Set the width (thickness) of the arcs in pixel.

arc-rounded (num)

Make the end points of the arcs rounded. true: rounded, false: perpendicular line ending

arc-color (color)

Set the color of the arc.

arc-opa (num)

Set the opacity of the arcs.

arc-image-src (ptr)

Set an image from which the arc will be masked out. It's useful to display complex effects on the arcs. Can be a pointer to lv_image_dsc_t or a path to a file

text-color (color)

Sets the color of the text.

text-opa (num)

Set the opacity of the text. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

text-font (ptr)

Set the font of the text (a pointer lv_font_t *).

text-letter-space (num)

Set the letter space in pixels

text-line-space (num)

Set the line space in pixels.

text-decor (num)

Set decoration for the text. The possible values are LV_TEXT_DECOR_NONE/UNDERLINE/STRIKETHROUGH. OR-ed values can be used as well.

text-align (num)

Set how to align the lines of the text. Note that it doesn't align the object itself, only the lines inside the object. The possible values are LV_TEXT_ALIGN_LEFT/CENTER/RIGHT/AUTO. LV_TEXT_ALIGN_AUTO detect the text base direction and uses left or right alignment accordingly

radius (num)

Set the radius on every corner. The value is interpreted in pixel (>= 0) or LV_RADIUS_CIRCLE for max. radius

clip-corner (num)

Enable to clip the overflowed content on the rounded corner. Can be true or false.

opa (num)

Scale down all opacity values of the object by this factor. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

opa-layered (num)

First draw the object on the layer, then scale down layer opacity factor. Value 0, LV_OPA_0 or LV_OPA_TRANSP means fully transparent, 255, LV_OPA_100 or LV_OPA_COVER means fully covering, other values or LV_OPA_10, LV_OPA_20, etc means semi transparency.

color-filter-dsc (ptr)

Mix a color to all colors of the object.

color-filter-opa (num)

The intensity of mixing of color filter.

anim (ptr)

The animation template for the object's animation. Should be a pointer to lv_anim_t. The animation parameters are widget specific, e.g. animation time could be the E.g. blink time of the cursor on the text area or scroll time of a roller. See the widgets' documentation to learn more.