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Summary: Methods | Inherited Methods | [Expand All]

public final class ColorOverlayDimmer
extends Object

java.lang.Object
↳	android.support.v17.leanback.graphics.ColorOverlayDimmer

Helper类将颜色分配给Paint。它保存当前活动级别的Alpha值。

Public methods
`int`	`applyToColor(int color)` 根据当前的调光级别更改颜色的RGB。
`static ColorOverlayDimmer`	`createColorOverlayDimmer(int dimColor, float activeLevel, float dimmedLevel)` 为给定的颜色和级别创建一个ColorOverlayDimmer。
`static ColorOverlayDimmer`	`createDefault(Context context)` 创建一个默认的ColorOverlayDimmer。
`void`	`drawColorOverlay(Canvas c, View v, boolean includePadding)` 在父视图的画布内绘制一个子视图顶部的暗色覆盖图。
`int`	`getAlpha()` 返回调光器的alpha值。
`float`	`getAlphaFloat()` 返回0到1之间的浮点值，对应于0到255之间的字母。
`Paint`	`getPaint()` 返回设置为当前alpha值的Paint对象。
`boolean`	`needsDraw()` 返回调光器是否需要绘制。
`void`	`setActiveLevel(float level)` 设置调光器的有效电平。

From class java.lang.Object

int applyToColor (int color)

根据当前的调光级别更改颜色的RGB。保持颜色的alpha值。

Parameters
`color`	`int`: The color to apply the dim level to.

Returns
`int`	A color with the RGB values adjusted by the alpha of the current dim level.

ColorOverlayDimmer createColorOverlayDimmer (int dimColor, 
                float activeLevel, 
                float dimmedLevel)

为给定的颜色和级别创建一个ColorOverlayDimmer。

Parameters
`dimColor`	`int`: The color for fully dimmed. Only the RGB values are used; the alpha channel is ignored.
`activeLevel`	`float`: The level of dimming when the View is in its active state. Must be a float value between 0.0 and 1.0.
`dimmedLevel`	`float`: The level of dimming when the View is in its dimmed state. Must be a float value between 0.0 and 1.0.

Returns
`ColorOverlayDimmer`

ColorOverlayDimmer createDefault (Context context)

创建一个默认的ColorOverlayDimmer。

Parameters
`context`	`Context`

Returns
`ColorOverlayDimmer`

void drawColorOverlay (Canvas c, 
                View v, 
                boolean includePadding)

在父视图的画布内绘制一个子视图顶部的暗色覆盖图。

Parameters
`c`	`Canvas`: Canvas of the parent View.
`v`	`View`: A child of the parent View.
`includePadding`	`boolean`: Set to true to draw overlay on padding area of the View.

int getAlpha ()

返回调光器的alpha值。

Returns
`int`

float getAlphaFloat ()

返回0到1之间的浮点值，对应于0到255之间的字母。

Returns
`float`

Paint getPaint ()

返回设置为当前alpha值的Paint对象。

Returns
`Paint`

boolean needsDraw ()

返回调光器是否需要绘制。

Returns
`boolean`

void setActiveLevel (float level)

设置调光器的有效电平。根据级别更新Alpha值。

Parameters
`level`	`float`: A float between 0 (fully dim) and 1 (fully active).