StrictModeFlashpublic class StrictModeFlash extends Object
| Fields Summary |
|---|
| private static final String | TAG | | private final android.view.SurfaceControl | mSurfaceControl | | private final android.view.Surface | mSurface | | private int | mLastDW | | private int | mLastDH | | private boolean | mDrawNeeded | | private final int | mThickness |
| Constructors Summary |
|---|
public StrictModeFlash(android.view.Display display, android.view.SurfaceSession session)
SurfaceControl ctrl = null;
try {
ctrl = new SurfaceControl(session, "StrictModeFlash",
1, 1, PixelFormat.TRANSLUCENT, SurfaceControl.HIDDEN);
ctrl.setLayerStack(display.getLayerStack());
ctrl.setLayer(WindowManagerService.TYPE_LAYER_MULTIPLIER * 101); // one more than Watermark? arbitrary.
ctrl.setPosition(0, 0);
ctrl.show();
mSurface.copyFrom(ctrl);
} catch (OutOfResourcesException e) {
}
mSurfaceControl = ctrl;
mDrawNeeded = true;
|
| Methods Summary |
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| private void | drawIfNeeded()
if (!mDrawNeeded) {
return;
}
mDrawNeeded = false;
final int dw = mLastDW;
final int dh = mLastDH;
Rect dirty = new Rect(0, 0, dw, dh);
Canvas c = null;
try {
c = mSurface.lockCanvas(dirty);
} catch (IllegalArgumentException e) {
} catch (Surface.OutOfResourcesException e) {
}
if (c == null) {
return;
}
// Top
c.clipRect(new Rect(0, 0, dw, mThickness), Region.Op.REPLACE);
c.drawColor(Color.RED);
// Left
c.clipRect(new Rect(0, 0, mThickness, dh), Region.Op.REPLACE);
c.drawColor(Color.RED);
// Right
c.clipRect(new Rect(dw - mThickness, 0, dw, dh), Region.Op.REPLACE);
c.drawColor(Color.RED);
// Bottom
c.clipRect(new Rect(0, dh - mThickness, dw, dh), Region.Op.REPLACE);
c.drawColor(Color.RED);
mSurface.unlockCanvasAndPost(c);
| | void | positionSurface(int dw, int dh)
if (mLastDW == dw && mLastDH == dh) {
return;
}
mLastDW = dw;
mLastDH = dh;
mSurfaceControl.setSize(dw, dh);
mDrawNeeded = true;
| | public void | setVisibility(boolean on)
if (mSurfaceControl == null) {
return;
}
drawIfNeeded();
if (on) {
mSurfaceControl.show();
} else {
mSurfaceControl.hide();
}
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