1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.inputmethod.latin.setup; 18 19 import android.content.Context; 20 import android.graphics.Canvas; 21 import android.graphics.Paint; 22 import android.graphics.Path; 23 import android.support.v4.view.ViewCompat; 24 import android.util.AttributeSet; 25 import android.view.View; 26 27 import com.android.inputmethod.latin.R; 28 29 public final class SetupStepIndicatorView extends View { 30 private final Path mIndicatorPath = new Path(); 31 private final Paint mIndicatorPaint = new Paint(); 32 private float mXRatio; 33 34 public SetupStepIndicatorView(final Context context, final AttributeSet attrs) { 35 super(context, attrs); 36 mIndicatorPaint.setColor(getResources().getColor(R.color.setup_step_background)); 37 mIndicatorPaint.setStyle(Paint.Style.FILL); 38 } 39 40 public void setIndicatorPosition(final int stepPos, final int totalStepNum) { 41 final int layoutDirection = ViewCompat.getLayoutDirection(this); 42 // The indicator position is the center of the partition that is equally divided into 43 // the total step number. 44 final float partionWidth = 1.0f / totalStepNum; 45 final float pos = stepPos * partionWidth + partionWidth / 2.0f; 46 mXRatio = (layoutDirection == ViewCompat.LAYOUT_DIRECTION_RTL) ? 1.0f - pos : pos; 47 invalidate(); 48 } 49 50 @Override 51 protected void onDraw(final Canvas canvas) { 52 super.onDraw(canvas); 53 final int xPos = (int)(getWidth() * mXRatio); 54 final int height = getHeight(); 55 mIndicatorPath.rewind(); 56 mIndicatorPath.moveTo(xPos, 0); 57 mIndicatorPath.lineTo(xPos + height, height); 58 mIndicatorPath.lineTo(xPos - height, height); 59 mIndicatorPath.close(); 60 canvas.drawPath(mIndicatorPath, mIndicatorPaint); 61 } 62 } 63
