File	Doc	Category	Size	Date	Package
ColorOverlayDimmer.java	API Doc	Android 5.1 API	5931	Thu Mar 12 22:22:56 GMT 2015	android.support.v17.leanback.graphics

ColorOverlayDimmer

• java.lang.Object

Fields Summary
private final float	mActiveLevel
private final float	mDimmedLevel
private final android.graphics.Paint	mPaint
private int	mAlpha
private float	mAlphaFloat

Constructors Summary

private ColorOverlayDimmer(int dimColor, float activeLevel, float dimmedLevel) if (activeLevel > 1.0f) activeLevel = 1.0f; if (activeLevel < 0.0f) activeLevel = 0.0f; if (dimmedLevel > 1.0f) dimmedLevel = 1.0f; if (dimmedLevel < 0.0f) dimmedLevel = 0.0f; mPaint = new Paint(); dimColor = Color.rgb(Color.red(dimColor), Color.green(dimColor), Color.blue(dimColor)); mPaint.setColor(dimColor); mActiveLevel = activeLevel; mDimmedLevel = dimmedLevel; setActiveLevel(1);

Methods Summary
public int	applyToColor(int color) Change the RGB of the color according to current dim level. Maintains the alpha value of the color. param color The color to apply the dim level to. return A color with the RGB values adjusted by the alpha of the current dim level. float f = 1 - mAlphaFloat; return Color.argb(Color.alpha(color), (int)(Color.red(color) * f), (int)(Color.green(color) * f), (int)(Color.blue(color) * f));
public static android.support.v17.leanback.graphics.ColorOverlayDimmer	createColorOverlayDimmer(int dimColor, float activeLevel, float dimmedLevel) Creates a ColorOverlayDimmer for the given color and levels. param dimColor The color for fully dimmed. Only the RGB values are used; the alpha channel is ignored. param activeLevel The level of dimming when the View is in its active state. Must be a float value between 0.0 and 1.0. param dimmedLevel The level of dimming when the View is in its dimmed state. Must be a float value between 0.0 and 1.0. return new ColorOverlayDimmer(dimColor, activeLevel, dimmedLevel);
public static android.support.v17.leanback.graphics.ColorOverlayDimmer	createDefault(android.content.Context context) Creates a default ColorOverlayDimmer. TypedArray a = context.obtainStyledAttributes(R.styleable.LeanbackTheme); int dimColor = a.getColor(R.styleable.LeanbackTheme_overlayDimMaskColor, context.getResources().getColor(R.color.lb_view_dim_mask_color)); float activeLevel = a.getFraction(R.styleable.LeanbackTheme_overlayDimActiveLevel, 1, 1, context.getResources().getFraction(R.fraction.lb_view_active_level, 1, 0)); float dimmedLevel = a.getFraction(R.styleable.LeanbackTheme_overlayDimDimmedLevel, 1, 1, context.getResources().getFraction(R.fraction.lb_view_dimmed_level, 1, 1)); a.recycle(); return new ColorOverlayDimmer(dimColor, activeLevel, dimmedLevel);
public void	drawColorOverlay(android.graphics.Canvas c, android.view.View v, boolean includePadding) Draw a dim color overlay on top of a child View inside the canvas of the parent View. param c Canvas of the parent View. param v A child of the parent View. param includePadding Set to true to draw overlay on padding area of the View. c.save(); float dx = v.getLeft() + v.getTranslationX(); float dy = v.getTop() + v.getTranslationY(); c.translate(dx, dy); c.concat(v.getMatrix()); c.translate(-dx, -dy); if (includePadding) { c.drawRect(v.getLeft(), v.getTop(), v.getRight(), v.getBottom(), mPaint); } else { c.drawRect(v.getLeft() + v.getPaddingLeft(), v.getTop() + v.getPaddingTop(), v.getRight() - v.getPaddingRight(), v.getBottom() - v.getPaddingBottom(), mPaint); } c.restore();
public int	getAlpha() Returns the alpha value for the dimmer. return mAlpha;
public float	getAlphaFloat() Returns the float value between 0 and 1 corresponding to alpha between 0 and 255. return mAlphaFloat;
public android.graphics.Paint	getPaint() Returns the Paint object set to the current alpha value. return mPaint;
public boolean	needsDraw() Returns whether the dimmer needs to draw. return mAlpha != 0;
public void	setActiveLevel(float level) Sets the active level of the dimmer. Updates the alpha value based on the level. param level A float between 0 (fully dim) and 1 (fully active). mAlphaFloat = (mDimmedLevel + level * (mActiveLevel - mDimmedLevel)); mAlpha = (int) (255 * mAlphaFloat); mPaint.setAlpha(mAlpha);