page curl 1

src/fi/harism/curl/CurlActivity.java

/* Copyright 2011 Harri Smått 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 fi.harism.curl; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.os.Bundle; /** * Simple Activity for curl testing. * * @author harism */ public class CurlActivity extends Activity { private CurlView mCurlView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); int index = 0; if (getLastNonConfigurationInstance() != null) { index = (Integer) getLastNonConfigurationInstance(); } mCurlView = (CurlView) findViewById(R.id.curl); mCurlView.setBitmapProvider(new BitmapProvider()); mCurlView.setSizeChangedObserver(new SizeChangedObserver()); mCurlView.setCurrentIndex(index); mCurlView.setBackgroundColor(0xFF202830); // This is something somewhat experimental. Before uncommenting next // line, please see method comments in CurlView. // mCurlView.setEnableTouchPressure(true); } @Override public void onPause() { super.onPause(); mCurlView.onPause(); } @Override public void onResume() { super.onResume(); mCurlView.onResume(); } @Override public Object onRetainNonConfigurationInstance() { return mCurlView.getCurrentIndex(); } /** * Bitmap provider. */ private class BitmapProvider implements CurlView.BitmapProvider { private int[] mBitmapIds = { R.drawable.obama, R.drawable.road_rage, R.drawable.taipei_101, R.drawable.world }; @Override public Bitmap getBitmap(int width, int height, int index) { Bitmap b = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); b.eraseColor(0xFFFFFFFF); Canvas c = new Canvas(b); Drawable d = getResources().getDrawable(mBitmapIds[index]); int margin = 7; int border = 3; Rect r = new Rect(margin, margin, width - margin, height - margin); int imageWidth = r.width() - (border * 2); int imageHeight = imageWidth * d.getIntrinsicHeight() / d.getIntrinsicWidth(); if (imageHeight > r.height() - (border * 2)) { imageHeight = r.height() - (border * 2); imageWidth = imageHeight * d.getIntrinsicWidth() / d.getIntrinsicHeight(); } r.left += ((r.width() - imageWidth) / 2) - border; r.right = r.left + imageWidth + border + border; r.top += ((r.height() - imageHeight) / 2) - border; r.bottom = r.top + imageHeight + border + border; Paint p = new Paint(); p.setColor(0xFFC0C0C0); c.drawRect(r, p); r.left += border; r.right -= border; r.top += border; r.bottom -= border; d.setBounds(r); d.draw(c); return b; } @Override public int getBitmapCount() { return mBitmapIds.length; } } /** * CurlView size changed observer. */ private class SizeChangedObserver implements CurlView.SizeChangedObserver { @Override public void onSizeChanged(int w, int h) { if (w > h) { mCurlView.setViewMode(CurlView.SHOW_TWO_PAGES); mCurlView.setMargins(.1f, .05f, .1f, .05f); } else { mCurlView.setViewMode(CurlView.SHOW_ONE_PAGE); mCurlView.setMargins(.1f, .1f, .1f, .1f); } } } }