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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.camera.ui;
import android.content.Context;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.view.animation.AlphaAnimation;
import android.view.animation.Transformation;
import javax.microedition.khronos.opengles.GL11;
abstract class AbstractIndicator extends GLView {
private static final int DEFAULT_PADDING = 3;
private int mOrientation = 0;
abstract protected BitmapTexture getIcon();
public AbstractIndicator(Context context) {
int padding = GLRootView.dpToPixel(context, DEFAULT_PADDING);
setPaddings(padding, 0, padding, 0);
}
@Override
protected void onMeasure(int widthSpec, int heightSpec) {
BitmapTexture icon = getIcon();
new MeasureHelper(this)
.setPreferredContentSize(icon.getWidth(), icon.getHeight())
.measure(widthSpec, heightSpec);
}
@Override
protected void render(GLRootView root, GL11 gl) {
BitmapTexture icon = getIcon();
if (icon != null) {
Rect p = mPaddings;
int width = getWidth() - p.left - p.right;
int height = getHeight() - p.top - p.bottom;
if (mOrientation != 0) {
Transformation trans = root.pushTransform();
Matrix matrix = trans.getMatrix();
matrix.preTranslate(p.left + width / 2, p.top + height / 2);
matrix.preRotate(-mOrientation);
icon.draw(root, -icon.getWidth() / 2, -icon.getHeight() / 2);
root.popTransform();
} else {
icon.draw(root,
p.left + (width - icon.getWidth()) / 2,
p.top + (height - icon.getHeight()) / 2);
}
}
}
public void setOrientation(int orientation) {
if (orientation % 90 != 0) throw new IllegalArgumentException();
orientation = orientation % 360;
if (orientation < 0) orientation += 360;
if (mOrientation == orientation) return;
mOrientation = orientation;
if (getGLRootView() != null) {
AlphaAnimation anim = new AlphaAnimation(0.2f, 1);
anim.setDuration(200);
startAnimation(anim);
}
}
abstract public GLView getPopupContent();
abstract public void overrideSettings(String key, String settings);
abstract public void reloadPreferences();
}
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