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static void brandGlowEffect(Context context, int brandColor) {
int glowDrawableId = context.getResources().getIdentifier("overscroll_glow", "drawable", "android");
Drawable androidGlow = context.getResources().getDrawable(glowDrawableId);
androidGlow.setColorFilter(brandColor, PorterDuff.Mode.SRC_IN);
}
static void brandGlowEffect(Context context, int brandColor) {
//glow
int glowDrawableId = context.getResources().getIdentifier("overscroll_glow", "drawable", "android");
Drawable androidGlow = context.getResources().getDrawable(glowDrawableId);
androidGlow.setColorFilter(brandColor, PorterDuff.Mode.SRC_IN);
//edge
int edgeDrawableId = context.getResources().getIdentifier("overscroll_edge", "drawable", "android");
Drawable androidEdge = context.getResources().getDrawable(edgeDrawableId);
androidEdge.setColorFilter(brandColor, PorterDuff.Mode.SRC_IN);
}
public EdgeEffect(Context context) {
final Resources res = context.getResources();
mEdge = res.getDrawable(R.drawable.overscroll_edge);
mGlow = res.getDrawable(R.drawable.overscroll_glow);
public boolean draw(Canvas canvas) {
...
int glowBottom = (int) Math.min(
mGlowHeight * mGlowScaleY * mGlowHeight / mGlowWidth * 0.6f,
mGlowHeight * MAX_GLOW_HEIGHT);
if (mWidth < mMinWidth) {
// Center the glow and clip it.
int glowLeft = (mWidth - mMinWidth)/2;
mGlow.setBounds(glowLeft, 0, mWidth - glowLeft, glowBottom);
} else {
// Stretch the glow to fit.
mGlow.setBounds(0, 0, mWidth, glowBottom);
}
mGlow.draw(canvas);
...
@mrh-is
mrh-is commented Dec 9, 2013

This works perfectly (if hackily). As a suggestion, I used PorterDuff.Mode.SRC_IN. That replaces the color completely instead of mutiplying the two colors together, but retains the glow shape.

@serso
serso commented Feb 14, 2014

Thumbs up for PorterDuff.Mode.SRC_IN

@menny
Owner
menny commented Dec 15, 2014

Updated the gist. Thanks.

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