| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.gallery3d.ui; |
| |
| import android.graphics.Rect; |
| import android.view.View.MeasureSpec; |
| |
| class MenuBar extends GLView { |
| |
| private static final int BORDER_SIZE = 1; // 1 pixel on all devices |
| private static final int BORDER_COLOR = 0x33FFFFFF; |
| |
| private NinePatchTexture mBackground; |
| |
| public MenuBar() { |
| } |
| |
| public void setBackground(NinePatchTexture background) { |
| if (mBackground == background) return; |
| mBackground = background; |
| if (background != null) { |
| setPaddings(background.getPaddings()); |
| } else { |
| setPaddings(0, 0, 0, 0); |
| } |
| invalidate(); |
| } |
| |
| @Override |
| protected void onMeasure(int widthSpec, int heightSpec) { |
| int width = 0; |
| int height = 0; |
| int n = getComponentCount(); |
| for (int i = 0; i < n; ++i) { |
| GLView component = getComponent(i); |
| component.measure( |
| MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); |
| height = Math.max(height, component.getMeasuredHeight()); |
| width += component.getMeasuredWidth(); |
| } |
| width += (n - 1) * BORDER_SIZE; |
| height += 2 * BORDER_SIZE; |
| MeasureHelper.getInstance(this) |
| .setPreferredContentSize(width, height) |
| .measure(widthSpec, heightSpec); |
| } |
| |
| @Override |
| protected void onLayout( |
| boolean changed, int left, int top, int right, int bottom) { |
| Rect p = mPaddings; |
| |
| int remainings = right - left - p.left - p.right; |
| int n = getComponentCount(); |
| for (int i = 0; i < n; ++i) { |
| GLView component = getComponent(i); |
| component.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); |
| remainings -= component.getMeasuredWidth(); |
| } |
| remainings -= (n - 1) * BORDER_SIZE; |
| |
| int layoutLeft = p.left; |
| int layoutTop = p.top + BORDER_SIZE; |
| int layoutBottom = bottom - top - p.bottom - BORDER_SIZE; |
| for (int i = 0; i < n; ++i) { |
| GLView component = getComponent(i); |
| int space = remainings / (n - i); |
| remainings -= space; |
| int width = component.getMeasuredWidth() + space; |
| int layoutRight = layoutLeft + width; |
| component.layout(layoutLeft, layoutTop, layoutRight, layoutBottom); |
| layoutLeft = layoutRight + BORDER_SIZE; |
| } |
| } |
| |
| @Override |
| protected void renderBackground(GLCanvas canvas) { |
| int width = getWidth(); |
| int height = getHeight(); |
| if (mBackground != null) { |
| mBackground.draw(canvas, 0, 0, width, height); |
| } |
| Rect p = mPaddings; |
| |
| width -= p.left + p.right; |
| height -= p.top + p.bottom; |
| |
| int top = p.top; |
| int bottom = top + height; |
| int left = p.left; |
| int right = left + width; |
| |
| canvas.bindColor(BORDER_COLOR); |
| canvas.drawLine(left, top, right, top); |
| canvas.drawLine(left, bottom - 1, right, bottom -1); |
| for (int i = 0, n = getComponentCount() - 1; i < n; ++i) { |
| Rect bounds = getComponent(i).mBounds; |
| canvas.drawLine(bounds.right, top, bounds.right, bottom); |
| } |
| } |
| } |