/**
* Create a layered drawable
*
* @param back - Background image to use when target is active
* @param front - Front image to use for target
* @param inset - Target inset padding
* @param frontBlank - Whether the front image for active target should be blank
* @return StateListDrawable
*/
private StateListDrawable getLayeredDrawable(
Drawable back, Drawable front, int inset, boolean frontBlank) {
front.mutate();
back.mutate();
InsetDrawable[] inactivelayer = new InsetDrawable[2];
InsetDrawable[] activelayer = new InsetDrawable[2];
Drawable activeFront = frontBlank ? mResources.getDrawable(android.R.color.transparent) : front;
Drawable inactiveBack =
mResources.getDrawable(com.android.internal.R.drawable.ic_lockscreen_lock_pressed);
inactivelayer[0] = new InsetDrawable(inactiveBack, 0, 0, 0, 0);
inactivelayer[1] = new InsetDrawable(front, inset, inset, inset, inset);
activelayer[0] = new InsetDrawable(back, 0, 0, 0, 0);
activelayer[1] = new InsetDrawable(activeFront, inset, inset, inset, inset);
StateListDrawable states = new StateListDrawable();
LayerDrawable inactiveLayerDrawable = new LayerDrawable(inactivelayer);
inactiveLayerDrawable.setId(0, 0);
inactiveLayerDrawable.setId(1, 1);
LayerDrawable activeLayerDrawable = new LayerDrawable(activelayer);
activeLayerDrawable.setId(0, 0);
activeLayerDrawable.setId(1, 1);
states.addState(TargetDrawable.STATE_INACTIVE, inactiveLayerDrawable);
states.addState(TargetDrawable.STATE_ACTIVE, activeLayerDrawable);
states.addState(TargetDrawable.STATE_FOCUSED, activeLayerDrawable);
return states;
}
/**
* Converts a drawable to a tiled version of itself. It will recursively traverse layer and state
* list drawables.
*/
private Drawable tileify(Drawable drawable, boolean clip) {
if (drawable instanceof LayerDrawable) {
LayerDrawable background = (LayerDrawable) drawable;
final int N = background.getNumberOfLayers();
Drawable[] outDrawables = new Drawable[N];
for (int i = 0; i < N; i++) {
int id = background.getId(i);
outDrawables[i] =
tileify(
background.getDrawable(i), (id == R.id.progress || id == R.id.secondaryProgress));
}
LayerDrawable newBg = new LayerDrawable(outDrawables);
for (int i = 0; i < N; i++) {
newBg.setId(i, background.getId(i));
}
return newBg;
} else if (drawable instanceof StateListDrawable) {
StateListDrawable in = (StateListDrawable) drawable;
StateListDrawable out = new StateListDrawable();
int numStates = in.getStateCount();
for (int i = 0; i < numStates; i++) {
out.addState(in.getStateSet(i), tileify(in.getStateDrawable(i), clip));
}
return out;
} else if (drawable instanceof BitmapDrawable) {
final Bitmap tileBitmap = ((BitmapDrawable) drawable).getBitmap();
if (mSampleTile == null) {
mSampleTile = tileBitmap;
}
final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape());
final BitmapShader bitmapShader =
new BitmapShader(tileBitmap, Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
shapeDrawable.getPaint().setShader(bitmapShader);
return (clip)
? new ClipDrawable(shapeDrawable, Gravity.LEFT, ClipDrawable.HORIZONTAL)
: shapeDrawable;
}
return drawable;
}
/**
* ÆÀ¼ÛÐÇÌõ״̬ͼƬ¸Ä±ä£¬µ±Á½¿ÅÐÇÒÔÉÏÊÇÏÔʾ»ÆÉ«ÐÇÐÇ£¬ µ±Á½¿ÅÐÇÐÇÒ»ÏÂÏÔʾ»ÒÉ«ÐÇÐÇ
*
* @param Bitmap [] images ÐÇÌõ״̬µÄͼƬ×é
*/
private Drawable buildRatingBarDrawables(Bitmap[] images) {
final int[] requiredIds = {
android.R.id.background, android.R.id.secondaryProgress, android.R.id.progress
};
final float[] roundedCorners = new float[] {5, 5, 5, 5, 5, 5, 5, 5};
Drawable[] pieces = new Drawable[3];
for (int i = 0; i < 3; i++) {
ShapeDrawable sd = new ShapeDrawable(new RoundRectShape(roundedCorners, null, null));
BitmapShader bitmapShader =
new BitmapShader(images[i], Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
sd.getPaint().setShader(bitmapShader);
ClipDrawable cd = new ClipDrawable(sd, Gravity.LEFT, ClipDrawable.HORIZONTAL);
if (i == 0) {
pieces[i] = sd;
} else {
pieces[i] = cd;
}
}
LayerDrawable ld = new LayerDrawable(pieces);
for (int i = 0; i < 3; i++) {
ld.setId(i, requiredIds[i]);
}
return ld;
}