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package com.android.camera.ui;
import android.content.Context;
import com.android.camera.R;
import com.android.camera.ui.ZoomController.ZoomListener;
import java.text.DecimalFormat;
public class ZoomIndicator extends AbstractIndicator {
private static final DecimalFormat sZoomFormat = new DecimalFormat("#.#x");
private static final float FONT_SIZE = 18;
private static final int FONT_COLOR = 0xA8FFFFFF;
protected static final String TAG = "ZoomIndicator";
private final float mFontSize;
private ZoomController mZoomController;
private LinearLayout mPopupContent;
private ZoomListener mZoomListener;
private int mZoomIndex = 0;
private int mDrawIndex = -1;
private float mZoomRatios[];
private StringTexture mTitle;
public ZoomIndicator(Context context) {
super(context);
mFontSize = GLRootView.dpToPixel(context, FONT_SIZE);
}
@Override
protected void onMeasure(int widthSpec, int heightSpec) {
int maxWidth = 0;
int maxHeight = 0;
int n = mZoomRatios == null ? 0: mZoomRatios.length;
for (int i = 0; i < n; ++i) {
float value = mZoomRatios[i];
Texture tex = StringTexture.newInstance(
sZoomFormat.format(value), mFontSize, FONT_COLOR);
if (maxWidth < tex.getWidth()) maxWidth = tex.getWidth();
if (maxHeight < tex.getHeight()) maxHeight = tex.getHeight();
}
new MeasureHelper(this)
.setPreferredContentSize(maxWidth, maxHeight)
.measure(widthSpec, heightSpec);
}
@Override
protected Texture getIcon() {
if (mDrawIndex != mZoomIndex) {
mDrawIndex = mZoomIndex;
if (mTitle != null) mTitle.deleteFromGL();
float value = mZoomRatios == null ? 0 : mZoomRatios[mZoomIndex];
mTitle = StringTexture.newInstance(
sZoomFormat.format(value), mFontSize, FONT_COLOR);
}
return mTitle;
}
@Override
public GLView getPopupContent() {
if (mZoomController == null) {
Context context = getGLRootView().getContext();
mZoomController = new ZoomController(context);
mZoomController.setAvailableZoomRatios(mZoomRatios);
mZoomController.setPaddings(15, 6, 15, 6);
mPopupContent = new LinearLayout();
GLOptionHeader header = new GLOptionHeader(context,
context.getString(R.string.zoom_control_title));
header.setBackground(new NinePatchTexture(
context, R.drawable.optionheader_background));
header.setPaddings(6, 3, 6, 3);
mPopupContent.addComponent(header);
mPopupContent.addComponent(mZoomController);
mZoomController.setZoomListener(new MyZoomListener());
mZoomController.setZoomIndex(mZoomIndex);
}
return mPopupContent;
}
@Override
public void overrideSettings(String key, String settings) {
// do nothing
}
@Override
public void reloadPreferences() {
// do nothing
}
public void setZoomRatios(float[] ratios) {
mZoomRatios = ratios;
requestLayout();
}
private class MyZoomListener implements ZoomController.ZoomListener {
public void onZoomChanged(int index, float value, boolean isMoving) {
if (mZoomListener != null) {
mZoomListener.onZoomChanged(index, value, isMoving);
}
if (mZoomIndex != index) onZoomIndexChanged(index);
}
}
private void onZoomIndexChanged(int index) {
if (mZoomIndex == index) return;
mZoomIndex = index;
invalidate();
}
public void setZoomListener(ZoomListener listener) {
mZoomListener = listener;
}
public void setZoomIndex(int index) {
if (mZoomIndex == index) return;
if (mZoomController != null) {
mZoomController.setZoomIndex(index);
} else {
onZoomIndexChanged(index);
}
}
}
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