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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PorterDuff.Mode;
import android.graphics.Shader;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.StateListDrawable;
import android.util.AttributeSet;
public class BackButton extends ShapedButton {
private Path mPath;
private Path mBorderPath;
private Paint mBorderPaint;
private Paint mBorderPrivatePaint;
public BackButton(Context context, AttributeSet attrs) {
super(context, attrs);
// Paint to draw the border.
mBorderPaint = new Paint();
mBorderPaint.setAntiAlias(true);
mBorderPaint.setColor(0xFF000000);
mBorderPaint.setStyle(Paint.Style.STROKE);
mBorderPrivatePaint = new Paint(mBorderPaint);
// Path is masked.
mPath = new Path();
mBorderPath = new Path();
mCanvasDelegate = new CanvasDelegate(this, Mode.DST_IN);
}
@Override
protected void onSizeChanged(int width, int height, int oldWidth, int oldHeight) {
super.onSizeChanged(width, height, oldWidth, oldHeight);
mPath.reset();
mPath.addCircle(width/2, height/2, width/2, Path.Direction.CW);
float borderWidth = getContext().getResources().getDimension(R.dimen.nav_button_border_width);
mBorderPaint.setStrokeWidth(borderWidth);
mBorderPrivatePaint.setStrokeWidth(borderWidth);
mBorderPath.reset();
mBorderPath.addCircle(width/2, height/2, (width/2) - borderWidth, Path.Direction.CW);
mBorderPaint.setShader(new LinearGradient(0, 0,
0, height,
0xFFB5BBC1, 0xFFFAFBFC,
Shader.TileMode.CLAMP));
mBorderPrivatePaint.setShader(new LinearGradient(0, 0,
0, height,
0xFF040607, 0xFF0B0D0E,
Shader.TileMode.CLAMP));
}
@Override
public void draw(Canvas canvas) {
mCanvasDelegate.draw(canvas, mPath, getWidth(), getHeight());
// Draw the border on top.
canvas.drawPath(mBorderPath, isPrivateMode() ? mBorderPrivatePaint : mBorderPaint);
}
// The drawable is constructed as per @drawable/address_bar_nav_button.
@Override
public void onLightweightThemeChanged() {
Drawable drawable = mActivity.getLightweightTheme().getDrawable(this);
if (drawable == null)
return;
Resources resources = getContext().getResources();
StateListDrawable stateList = new StateListDrawable();
stateList.addState(new int[] { R.attr.state_private, android.R.attr.state_pressed }, new ColorDrawable(resources.getColor(R.color.highlight_nav_pb)));
stateList.addState(new int[] { android.R.attr.state_pressed }, new ColorDrawable(resources.getColor(R.color.highlight_nav)));
stateList.addState(new int[] { R.attr.state_private, android.R.attr.state_focused }, new ColorDrawable(resources.getColor(R.color.highlight_nav_focused_pb)));
stateList.addState(new int[] { android.R.attr.state_focused }, new ColorDrawable(resources.getColor(R.color.highlight_nav_focused)));
stateList.addState(new int[] { R.attr.state_private }, new ColorDrawable(resources.getColor(R.color.background_private)));
stateList.addState(new int[] {}, drawable);
setBackgroundDrawable(stateList);
}
@Override
public void onLightweightThemeReset() {
setBackgroundResource(R.drawable.address_bar_nav_button);
}
}
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