@Override
boolean initialize(Surface surface) throws Surface.OutOfResourcesException {
if (isRequested() && !isEnabled()) {
initializeEgl();
mGl = createEglSurface(surface);
mDestroyed = false;
if (mGl != null) {
int err = sEgl.eglGetError();
if (err != EGL_SUCCESS) {
destroy(true);
setRequested(false);
} else {
if (mCanvas == null) {
mCanvas = createCanvas();
}
if (mCanvas != null) {
setEnabled(true);
} else {
Log.w(LOG_TAG, "Hardware accelerated Canvas could not be created");
}
}
return mCanvas != null;
}
}
return false;
}
@Override
void destroy(boolean full) {
if (full && mCanvas != null) {
mCanvas = null;
}
if (!isEnabled() || mDestroyed) {
setEnabled(false);
return;
}
destroySurface();
setEnabled(false);
mDestroyed = true;
mGl = null;
}
@Override
void invalidate(Surface surface) {
// Cancels any existing buffer to ensure we'll get a buffer
// of the right size before we call eglSwapBuffers
sEgl.eglMakeCurrent(sEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (mEglSurface != null && mEglSurface != EGL_NO_SURFACE) {
sEgl.eglDestroySurface(sEglDisplay, mEglSurface);
mEglSurface = null;
setEnabled(false);
}
if (surface.isValid()) {
if (!createSurface(surface)) {
return;
}
mUpdateDirtyRegions = true;
if (mCanvas != null) {
setEnabled(true);
}
}
}