| // Copyright 2010-2014, 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.TileMode; |
| |
| /** |
| * Drawable for drop shadow on top and bottom of the boundary. |
| */ |
| public class VerticalInnerDropShadowDrawable extends BaseBackgroundDrawable { |
| |
| private final int shadowSize; |
| private Optional<LinearGradient> topShadow = Optional.absent(); |
| private Optional<LinearGradient> bottomShadow = Optional.absent(); |
| private final Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| |
| public VerticalInnerDropShadowDrawable( |
| int leftPadding, int topPadding, int rightPadding, int bottomPadding, |
| int shadowSize) { |
| super(leftPadding, topPadding, rightPadding, bottomPadding); |
| this.shadowSize = shadowSize; |
| } |
| |
| @Override |
| public void draw(Canvas canvas) { |
| if (isCanvasRectEmpty()) { |
| return; |
| } |
| |
| Rect rect = getCanvasRect(); |
| if (topShadow.isPresent()) { |
| paint.setShader(topShadow.get()); |
| canvas.drawRect(rect, paint); |
| } |
| |
| if (bottomShadow.isPresent()) { |
| paint.setShader(bottomShadow.get()); |
| canvas.drawRect(rect, paint); |
| } |
| } |
| |
| @Override |
| protected void onBoundsChange(Rect bounds) { |
| super.onBoundsChange(bounds); |
| if (isCanvasRectEmpty()) { |
| topShadow = Optional.absent(); |
| bottomShadow = Optional.absent(); |
| return; |
| } |
| |
| Rect canvasRect = getCanvasRect(); |
| topShadow = Optional.of(new LinearGradient( |
| 0, canvasRect.top, 0, Math.min(canvasRect.bottom, canvasRect.top + shadowSize), |
| 0xA6000000, 0x00000000, TileMode.CLAMP)); |
| bottomShadow = Optional.of(new LinearGradient( |
| 0, Math.max(canvasRect.top, canvasRect.bottom - shadowSize), 0, canvasRect.bottom, |
| 0x00000000, 0xA6000000, TileMode.CLAMP)); |
| } |
| } |