Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0b658664 authored by Michael Jurka's avatar Michael Jurka
Browse files

Speeding up System UI pressed anim 

No longer saving a layer in KeyButtonView.onDraw,
which prevents a framebuffer readback on some
drivers and cuts ~3ms from render time per frame
(on some frames, up to ~10ms)

Change-Id: I5df56c20098f35c8ae6c25e76c67d81e9b72d1f7
parent 81754949

packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java

+6 −7
Original line number Diff line number Diff line
@@ -87,7 +87,7 @@ public class KeyButtonView extends ImageView { 


        mGlowBG = a.getDrawable(R.styleable.KeyButtonView_glowBackground);

        if (mGlowBG != null) {

            mDrawingAlpha = BUTTON_QUIESCENT_ALPHA;

            setDrawingAlpha(BUTTON_QUIESCENT_ALPHA);

        }

        

        a.recycle();
@@ -107,17 +107,13 @@ public class KeyButtonView extends ImageView { 
            final int h = getHeight();

            canvas.scale(mGlowScale, mGlowScale, w*0.5f, h*0.5f);

            mGlowBG.setBounds(0, 0, w, h);

            mGlowBG.setAlpha((int)(mGlowAlpha * 255));

            mGlowBG.setAlpha((int)(mDrawingAlpha * mGlowAlpha * 255));

            mGlowBG.draw(canvas);

            canvas.restore();

            mRect.right = w;

            mRect.bottom = h;

            canvas.saveLayerAlpha(mRect, (int)(mDrawingAlpha * 255), Canvas.ALL_SAVE_FLAG);

        }

        super.onDraw(canvas);

        if (mGlowBG != null) {

            canvas.restore();

        }

    }



    public float getDrawingAlpha() {
@@ -127,8 +123,11 @@ public class KeyButtonView extends ImageView { 


    public void setDrawingAlpha(float x) {

        if (mGlowBG == null) return;

        // Calling setAlpha(int), which is an ImageView-specific

        // method that's different from setAlpha(float). This sets

        // the alpha on this ImageView's drawable directly

        setAlpha((int) (x * 255));

        mDrawingAlpha = x;

        invalidate();

    }



    public float getGlowAlpha() {