author | koda |
Tue, 15 Oct 2013 01:15:39 +0200 | |
changeset 9543 | 1826b5315369 |
parent 7588 | 27e5857da6af |
child 10017 | de822cd3df3a |
permissions | -rw-r--r-- |
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/* |
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* Hedgewars for Android. An Android port of Hedgewars, a free turn based strategy game |
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* Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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*/ |
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package org.hedgewars.hedgeroid; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import org.hedgewars.hedgeroid.Datastructures.MapFile; |
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import org.hedgewars.hedgeroid.Datastructures.MapRecipe; |
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import org.hedgewars.hedgeroid.EngineProtocol.PascalExports; |
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import org.hedgewars.hedgeroid.frontlib.Flib; |
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import org.hedgewars.hedgeroid.frontlib.Frontlib; |
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import org.hedgewars.hedgeroid.frontlib.Frontlib.ByteArrayPtr; |
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import org.hedgewars.hedgeroid.frontlib.Frontlib.MapRecipePtr; |
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import org.hedgewars.hedgeroid.frontlib.Frontlib.MapconnPtr; |
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import org.hedgewars.hedgeroid.frontlib.Frontlib.MapimageCallback; |
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import org.hedgewars.hedgeroid.frontlib.Frontlib.StrCallback; |
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import org.hedgewars.hedgeroid.util.FileUtils; |
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import android.content.Context; |
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import android.graphics.Bitmap; |
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import android.graphics.Bitmap.Config; |
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import android.graphics.Color; |
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import android.graphics.drawable.BitmapDrawable; |
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import android.graphics.drawable.Drawable; |
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import android.os.Handler; |
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import android.os.Looper; |
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import android.util.Log; |
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import com.sun.jna.Pointer; |
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/** |
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* A class that asynchronously generates a map preview from a MapRecipe. |
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* |
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* For named maps, this will load the preview image from the filesystem. For others, |
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* it will call the Hedgewars engine to generate a preview image. The result is sent |
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* back to a listener on the UI thread. |
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*/ |
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public final class MapPreviewGenerator implements Runnable { |
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private static final String TAG = MapPreviewGenerator.class.getSimpleName(); |
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private static final Handler mainHandler = new Handler(Looper.getMainLooper()); |
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private static final long TIMEOUT_NS = 20l * 1000 * 1000 * 1000; |
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private final Context appContext; |
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private final MapRecipe map; |
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private final Listener listener; |
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private boolean resultAvailable; |
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private Drawable result; |
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public static interface Listener { |
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/** |
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* This is called on the UI thread once the preview is ready or failed. |
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* In case of failure, null is passed. |
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*/ |
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void onMapPreviewResult(Drawable preview); |
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} |
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private MapPreviewGenerator(Context appContext, MapRecipe map, Listener listener) { |
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this.appContext = appContext; |
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this.map = map; |
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this.listener = listener; |
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} |
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public void run() { |
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if (map.mapgen == Frontlib.MAPGEN_NAMED) { |
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postToListener(loadPreviewFromFile(appContext, map.name)); |
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} else { |
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resultAvailable = false; |
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result = null; |
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MapconnPtr conn = Flib.INSTANCE.flib_mapconn_create(MapRecipePtr.createJavaOwned(map)); |
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if (conn == null) { |
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postToListener(null); |
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return; |
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} |
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try { |
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int port = Flib.INSTANCE.flib_mapconn_getport(conn); |
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Flib.INSTANCE.flib_mapconn_onSuccess(conn, successCb, null); |
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Flib.INSTANCE.flib_mapconn_onFailure(conn, failureCb, null); |
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String configPath; |
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try { |
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configPath = FileUtils.getCachePath(appContext).getAbsolutePath(); |
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} catch(FileNotFoundException e) { |
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return; |
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} |
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startEngine(configPath, port); |
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long startTime = System.nanoTime(); |
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do { |
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Flib.INSTANCE.flib_mapconn_tick(conn); |
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try { |
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Thread.sleep(50); |
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} catch (InterruptedException e) { |
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// ignore |
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} |
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if(System.nanoTime()-startTime > TIMEOUT_NS) { |
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Log.w(TAG, "Error generating map preview: timeout"); |
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resultAvailable = true; |
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} |
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} while(!resultAvailable); |
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119 |
} finally { |
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Flib.INSTANCE.flib_mapconn_destroy(conn); |
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postToListener(result); |
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122 |
} |
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123 |
} |
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124 |
} |
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125 |
|
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126 |
public static void startPreviewGeneration(Context appContext, MapRecipe map, Listener listener) { |
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new Thread(new MapPreviewGenerator(appContext, map, listener)).start(); |
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128 |
} |
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129 |
|
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130 |
private static Drawable loadPreviewFromFile(Context appContext, String mapName) { |
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131 |
if(!mapName.startsWith("+")) { |
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132 |
try { |
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133 |
File previewFile = MapFile.getPreviewFile(appContext, mapName); |
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return Drawable.createFromPath(previewFile.getAbsolutePath()); |
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} catch (FileNotFoundException e) { |
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Log.w("MapPreviewGenerator", "Preview for map "+mapName+" not found."); |
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137 |
} |
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138 |
} |
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139 |
return null; |
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140 |
} |
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141 |
|
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142 |
private static void startEngine(final String configPath, final int port) { |
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new Thread(new Runnable() { |
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public void run() { |
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Log.d(TAG, "Starting engine "+port); |
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PascalExports.synchronizedGenLandPreview(port); |
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Log.d(TAG, "Engine finished"); |
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148 |
} |
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149 |
}).start(); |
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150 |
} |
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151 |
|
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private void postToListener(final Drawable result) { |
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mainHandler.post(new Runnable() { |
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154 |
public void run() { |
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listener.onMapPreviewResult(result); |
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156 |
} |
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157 |
}); |
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158 |
} |
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159 |
|
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160 |
/** |
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* Let's be extra nice here and clip off the left and right sides, so the preview is centered... |
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* Since the image is present in bytes, we can save some effort by checking entire byte-columns first. |
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163 |
*/ |
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164 |
private final MapimageCallback successCb = new MapimageCallback() { |
7588 | 165 |
public void callback(Pointer context, ByteArrayPtr buffer, int hedgehogCount) { |
166 |
byte[] mapdata = buffer.deref(Frontlib.MAPIMAGE_BYTES); |
|
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167 |
|
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168 |
int leftmostPixel = Frontlib.MAPIMAGE_WIDTH; |
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int rightmostPixel = -1; |
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int bytesPerLine = Frontlib.MAPIMAGE_WIDTH/8; |
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171 |
|
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// Find the leftmost pixel |
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173 |
for(int xbyte=0; xbyte<bytesPerLine; xbyte++) { |
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174 |
for(int y=0; y<Frontlib.MAPIMAGE_HEIGHT; y++) { |
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175 |
int b = 0xff&mapdata[xbyte+y*bytesPerLine]; |
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176 |
if(b != 0) { |
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177 |
leftmostPixel = Math.min(leftmostPixel, Integer.numberOfLeadingZeros(b)-24+xbyte*8); |
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178 |
} |
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179 |
} |
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180 |
if(leftmostPixel!=Frontlib.MAPIMAGE_WIDTH) break; |
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181 |
} |
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182 |
|
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183 |
// Find the rightmost pixel |
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184 |
for(int xbyte=bytesPerLine-1; xbyte>=0; xbyte--) { |
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185 |
for(int y=0; y<Frontlib.MAPIMAGE_HEIGHT; y++) { |
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186 |
int b = mapdata[xbyte+y*bytesPerLine]; |
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187 |
if(b != 0) { |
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188 |
rightmostPixel = Math.max(rightmostPixel, xbyte*8+7-Integer.numberOfTrailingZeros(b)); |
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|
189 |
} |
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190 |
} |
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191 |
if(rightmostPixel!=-1) break; |
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|
192 |
} |
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193 |
|
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194 |
// No pixel was set at all -> use default width |
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195 |
if(rightmostPixel==-1) { |
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196 |
leftmostPixel = 0; |
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197 |
rightmostPixel = Frontlib.MAPIMAGE_WIDTH-1; |
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198 |
} |
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199 |
|
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200 |
Bitmap bitmap = Bitmap.createBitmap(rightmostPixel-leftmostPixel+1, Frontlib.MAPIMAGE_HEIGHT, Config.ARGB_8888); |
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201 |
for(int y=0; y<Frontlib.MAPIMAGE_HEIGHT; y++) { |
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202 |
for(int x=0; x<bitmap.getWidth(); x++) { |
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203 |
bitmap.setPixel(x, y, isPixelSet(mapdata, x+leftmostPixel, y) ? Color.YELLOW : Color.TRANSPARENT); |
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|
204 |
} |
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|
205 |
} |
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206 |
result = new BitmapDrawable(bitmap); |
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207 |
resultAvailable = true; |
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|
208 |
} |
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209 |
}; |
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210 |
|
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211 |
private static boolean isPixelSet(byte[] imgdata, int x, int y) { |
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212 |
int pixelnum = x+Frontlib.MAPIMAGE_WIDTH*y; |
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213 |
return (imgdata[pixelnum>>3] & (128>>(pixelnum&7))) != 0; |
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214 |
} |
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|
215 |
|
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216 |
private final StrCallback failureCb = new StrCallback() { |
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217 |
public void callback(Pointer context, String reason) { |
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218 |
Log.w(TAG, "Error generating map preview: "+reason); |
7508
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219 |
result = null; |
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220 |
resultAvailable = true; |
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221 |
} |
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222 |
}; |
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223 |
} |