| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| package org.mozc.android.inputmethod.japanese.view; |
| |
| import com.google.common.base.Optional; |
| |
| import android.graphics.Canvas; |
| import android.graphics.LinearGradient; |
| import android.graphics.Paint; |
| import android.graphics.Rect; |
| import android.graphics.Shader; |
| import android.graphics.Shader.TileMode; |
| |
| /** |
| * Drawable to render a candidate background. |
| * |
| */ |
| public class CandidateBackgroundDrawable extends BaseBackgroundDrawable { |
| |
| private final int topColor; |
| private final int bottomColor; |
| private final int highlightColor; |
| private final int borderColor; |
| |
| private int left; |
| private int top; |
| private int right; |
| private int bottom; |
| |
| /** Cached Paint instance to reuse for performance reason. */ |
| private final Paint paint = new Paint(); |
| private Optional<Shader> shader = Optional.absent(); |
| |
| public CandidateBackgroundDrawable( |
| int leftPadding, int topPadding, int rightPadding, int bottomPadding, |
| int topColor, int bottomColor, int highlightColor, int borderColor) { |
| super(leftPadding, topPadding, rightPadding, bottomPadding); |
| this.topColor = topColor; |
| this.bottomColor = bottomColor; |
| this.highlightColor = highlightColor; |
| this.borderColor = borderColor; |
| } |
| |
| @Override |
| public void draw(Canvas canvas) { |
| if (isCanvasRectEmpty()) { |
| return; |
| } |
| |
| // Local variable cache for better performance. |
| Paint paint = this.paint; |
| int left = this.left; |
| int top = this.top; |
| int right = this.right; |
| int bottom = this.bottom; |
| |
| // Render border color. |
| paint.reset(); |
| paint.setAntiAlias(true); |
| paint.setColor(borderColor); |
| canvas.drawRect(left, top, right, bottom, paint); |
| |
| // Render left/top highlight. |
| paint.reset(); |
| paint.setAntiAlias(true); |
| paint.setColor(highlightColor); |
| canvas.drawRect(left, top, Math.max(left, right - 1), Math.max(top, bottom - 1), paint); |
| |
| // Render filling color. |
| if (shader.isPresent()) { |
| paint.reset(); |
| paint.setAntiAlias(true); |
| paint.setShader(shader.get()); |
| canvas.drawRect(left + 1, top + 1, |
| Math.max(left + 1, right - 1), Math.max(top + 1, bottom - 1), paint); |
| } |
| } |
| |
| @Override |
| protected void onBoundsChange(Rect rect) { |
| super.onBoundsChange(rect); |
| |
| Rect canvasRect = getCanvasRect(); |
| left = canvasRect.left; |
| top = canvasRect.top; |
| right = canvasRect.right; |
| bottom = canvasRect.bottom; |
| shader = Optional.<Shader>of( |
| new LinearGradient(0, top, 0, bottom, topColor, bottomColor, TileMode.CLAMP)); |
| } |
| } |