private void loadOfflineImages() {
if (OfflineLoadManager.isLoading()) {
return;
}
final int selectedZoomLevel = _targetZoomLevels[_comboTargetZoom.getSelectionIndex()];
final int tileSize = _selectedMp.getTileSize();
final int worldStartX = _offlineWorldStart.x;
final int worldStartY = _offlineWorldStart.y;
final int worldEndX = _offlineWorldEnd.x;
final int worldEndY = _offlineWorldEnd.y;
double worldX1 = Math.min(worldStartX, worldEndX);
double worldX2 = Math.max(worldStartX, worldEndX);
double worldY1 = Math.min(worldStartY, worldEndY);
double worldY2 = Math.max(worldStartY, worldEndY);
for (int zoomLevel = _validMapZoomLevel; zoomLevel <= selectedZoomLevel; zoomLevel++) {
final int maxMapTileSize = _selectedMp.getMapTileSize(zoomLevel).width;
final int areaPixelWidth = (int) (worldX2 - worldX1);
final int areaPixelHeight = (int) (worldY2 - worldY1);
final int numTileWidth = (int) Math.ceil((double) areaPixelWidth / (double) tileSize);
final int numTileHeight = (int) Math.ceil((double) areaPixelHeight / (double) tileSize);
int tilePosMinX = (int) Math.floor(worldX1 / tileSize);
int tilePosMinY = (int) Math.floor(worldY1 / tileSize);
int tilePosMaxX = tilePosMinX + numTileWidth;
int tilePosMaxY = tilePosMinY + numTileHeight;
// ensure tiles are within the map
tilePosMinX = Math.max(0, tilePosMinX);
tilePosMinY = Math.max(0, tilePosMinY);
tilePosMaxX = Math.min(tilePosMaxX, maxMapTileSize);
tilePosMaxY = Math.min(tilePosMaxY, maxMapTileSize);
for (int tilePosX = tilePosMinX; tilePosX <= tilePosMaxX; tilePosX++) {
for (int tilePosY = tilePosMinY; tilePosY <= tilePosMaxY; tilePosY++) {
// create offline tile
final Tile offlineTile = new Tile(_selectedMp, zoomLevel, tilePosX, tilePosY, null);
offlineTile.setBoundingBoxEPSG4326();
_selectedMp.doPostCreation(offlineTile);
_offlineManager.addOfflineTile(_selectedMp, offlineTile);
}
}
// set next zoom level, zoom into the map
worldX1 *= 2;
worldX2 *= 2;
worldY1 *= 2;
worldY2 *= 2;
}
// initialize progress bar
_maxQueue = MP.getTileWaitingQueue().size();
_progbarQueue.setMaximum(_maxQueue);
}
@Override
public void tileEvent(final TileEventId tileEventId, final Tile tile) {
final int tileWaitingQueueSize = MP.getTileWaitingQueue().size();
_updateCounter[0]++;
_display.asyncExec(
new Runnable() {
final int _runnableUpdateCounter = _updateCounter[0];
public void run() {
// check if a new runnable was created
if (_runnableUpdateCounter != _updateCounter[0]) {
// a new runnable was created
return;
}
// check if widgets are disposed
if (_comboMapProvider.isDisposed()) {
return;
}
final float progress = _maxQueue - tileWaitingQueueSize;
final float percent = _maxQueue == 0 ? 0 : progress * 100 / _maxQueue;
final StringBuilder sb = new StringBuilder();
sb.append(Integer.toString(tileWaitingQueueSize));
sb.append(UI.DASH_WITH_SPACE);
sb.append(_nf.format(percent));
sb.append('%');
_progbarQueue.setSelection((int) progress);
_txtQueue.setText(sb.toString());
/*
* update state when all images are downloaded, it's possible that not all images
* are downloaded when queue size is 0
*/
if (tileWaitingQueueSize == 0) {
final UIJob uiJob = new UIJob(_display, "update offline state") { // $NON-NLS-1$
final int _uiJobUpdateCounter = _updateCounter[0];
@Override
public IStatus runInUIThread(final IProgressMonitor monitor) {
// check if a new runnable was created
if (_uiJobUpdateCounter != _updateCounter[0]) {
// a new runnable was created
return Status.OK_STATUS;
}
getOfflineImageState();
enableControls(true);
_comboTargetZoom.setFocus();
return Status.OK_STATUS;
}
};
uiJob.setSystem(true);
uiJob.schedule(200);
}
}
});
}