add test app for ninepatch drawing
This commit is contained in:
Mike Reed
210
apps/NinePatchLab/src/com/android/ninepatch/NinePatchLab.java
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210
apps/NinePatchLab/src/com/android/ninepatch/NinePatchLab.java
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/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.ninepatchlab;
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import com.android.ninepatchlab.R;
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import android.app.Activity;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.*;
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import android.graphics.drawable.*;
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import android.os.Bundle;
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import android.os.SystemClock;
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import android.view.KeyEvent;
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import android.view.*;
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public class NinePatchLab extends Activity {
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public NinePatchLab() {}
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Drawable[] mButtons;
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Drawable[] mBGs;
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float mScale;
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boolean mShowFPS = true;
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boolean mDoDither = true;
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boolean mDoFilter = true;
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int mCurrBGIndex;
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private static final int FPS_COUNTER_LIMIT = 30;
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private int mFPSTime;
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private int mFPSCounter;
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private int mFPSAve;
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private View mView;
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private void updateTitle() {
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String title = "D=" + mDoDither + " F=" + mDoFilter;
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if (mShowFPS) {
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title += " FPS=" + mFPSAve;
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}
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setTitle(title);
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}
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private static Drawable make_custom_bg() {
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int[] colors = new int[] {
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// 0xFFFF0000, 0xFFFF00FF, 0xFF0000FF, 0xFF00FFFF, 0xFF00FF00, 0xFFFFFF00, 0xFFFF0000
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0xFFFF0000, 0xFF0000FF
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};
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return new GradientDrawable(GradientDrawable.Orientation.TR_BL,
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colors);
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}
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private static Drawable make_solid_bg() {
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return new ColorDrawable(0xFF008800);
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}
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private class NPView extends View {
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public NPView(Context context) {
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super(context);
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setFocusable(true);
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int[] bgs = new int[] {
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R.drawable.bg_grad_blue,
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R.drawable.bg_grad_green,
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R.drawable.bg_grad_grey,
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R.drawable.bg_grad_red,
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R.drawable.bg_grad_yellow,
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};
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int[] ids = new int[] {
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R.drawable.btn_dark_ticks_stretch_multiple,
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R.drawable.btn_dark_ticks_stretch_single,
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R.drawable.btn_transparent_ticks_stretch_multiple,
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R.drawable.btn_transparent_ticks_stretch_single,
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R.drawable.btn_light_ticks_stretch_multiple,
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R.drawable.btn_light_ticks_stretch_single,
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};
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mButtons = new Drawable[ids.length];
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mBGs = new Drawable[bgs.length + 2];
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Resources res = context.getResources();
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for (int i = 0; i < ids.length; i++) {
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mButtons[i] = res.getDrawable(ids[i]);
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}
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for (int i = 0; i < bgs.length; i++) {
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mBGs[i] = res.getDrawable(bgs[i]);
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}
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mBGs[bgs.length] = make_custom_bg();
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mBGs[bgs.length+1] = make_solid_bg();
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mScale = res.getDisplayMetrics().density;
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}
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private static final int MARGIN_X = 16;
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private static final int MARGIN_Y = 8;
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private void setDrawableFlags(Drawable dr) {
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dr.setDither(mDoDither);
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dr.setFilterBitmap(mDoFilter);
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}
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protected void onDraw(Canvas canvas) {
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long now = 0;
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if (mShowFPS) {
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now = SystemClock.uptimeMillis();
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}
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Drawable bg = mBGs[mCurrBGIndex];
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bg.setBounds(0, 0, getWidth(), getHeight());
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setDrawableFlags(bg);
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bg.draw(canvas);
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final int WIDTH = getWidth() - 2*MARGIN_X;
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final int HEIGHT = getHeight() - 2*MARGIN_Y;
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final int N = mButtons.length;
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final int gapSize = Math.round(mScale * 8);
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final int drHeight = (HEIGHT - (N - 1) * gapSize) / N;
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final int drWidth = WIDTH;
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// canvas.drawColor(0xFF5F810C);
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canvas.translate(MARGIN_X, MARGIN_Y);
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for (Drawable dr : mButtons) {
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dr.setBounds(0, 0, drWidth, drHeight);
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setDrawableFlags(dr);
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dr.draw(canvas);
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canvas.translate(0, drHeight + gapSize);
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}
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if (mShowFPS) {
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mFPSTime += (int)(SystemClock.uptimeMillis() - now);
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mFPSCounter += 1;
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if (mFPSCounter > FPS_COUNTER_LIMIT) {
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mFPSAve = mFPSCounter * 1000 / mFPSTime;
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updateTitle();
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mFPSTime = 0;
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mFPSCounter = 0;
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}
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invalidate();
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}
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}
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}
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private void toggleFPS() {
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mShowFPS = !mShowFPS;
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if (mShowFPS) {
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mFPSCounter = 0;
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mFPSTime = 0;
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mView.invalidate();
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}
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}
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@Override public boolean onKeyDown(int keyCode, KeyEvent event) {
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switch (keyCode) {
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case KeyEvent.KEYCODE_DPAD_DOWN:
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mDoFilter = !mDoFilter;
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updateTitle();
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mView.invalidate();
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return true;
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case KeyEvent.KEYCODE_DPAD_UP:
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mDoDither = !mDoDither;
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updateTitle();
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mView.invalidate();
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return true;
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case KeyEvent.KEYCODE_DPAD_RIGHT:
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mCurrBGIndex = (mCurrBGIndex + 1) % mBGs.length;
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mView.invalidate();
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return true;
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case KeyEvent.KEYCODE_DPAD_LEFT:
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mCurrBGIndex -= 1;
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if (mCurrBGIndex < 0) {
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mCurrBGIndex = 0;
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}
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mView.invalidate();
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return true;
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case KeyEvent.KEYCODE_VOLUME_UP:
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toggleFPS();
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return true;
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case KeyEvent.KEYCODE_U:
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case KeyEvent.KEYCODE_D:
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case KeyEvent.KEYCODE_VOLUME_DOWN:
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return super.onKeyDown(keyCode, event);
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}
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return super.onKeyDown(keyCode, event);
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}
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public void onCreate(Bundle icicle) {
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super.onCreate(icicle);
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mView = new NPView(this);
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setContentView(mView);
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}
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}
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