@Override
public void draw(final Canvas c, final MapView mapView, final boolean shadow) {
if (shadow) {
return;
}
// If map views is animating, don't update, scale will be wrong.
if (mapView.isAnimating()) {
return;
}
final int zoomLevel = mapView.getZoomLevel();
if (zoomLevel >= minZoom) {
final Projection projection = mapView.getProjection();
if (projection == null) {
return;
}
final IGeoPoint center = projection.fromPixels((screenWidth / 2), screenHeight / 2);
if (zoomLevel != lastZoomLevel
|| (int) (center.getLatitudeE6() / 1E6) != (int) (lastLatitude / 1E6)) {
lastZoomLevel = zoomLevel;
lastLatitude = center.getLatitudeE6();
createScaleBarPicture(mapView);
}
mBounds.set(projection.getScreenRect());
mBounds.offset((int) xOffset, (int) yOffset);
mBounds.set(
mBounds.left,
mBounds.top,
mBounds.left + scaleBarPicture.getWidth(),
mBounds.top + scaleBarPicture.getHeight());
c.drawPicture(scaleBarPicture, mBounds);
}
}
@Override
protected void draw(final Canvas pC, final MapView pOsmv, final boolean shadow) {
if (shadow) {
return;
}
// Don't draw if we are animating
if (pOsmv.isAnimating()) {
return;
}
// Calculate the half-world size
final Projection projection = pOsmv.getProjection();
final int zoomLevel = projection.getZoomLevel();
mWorldSize_2 = TileSystem.MapSize(zoomLevel) / 2;
// Save the Mercator coordinates of what is on the screen
mViewportRect.set(projection.getScreenRect());
mViewportRect.offset(mWorldSize_2, mWorldSize_2);
// Start calculating the tile area with the current viewport
mTileArea.set(mViewportRect);
// Get the target zoom level difference.
int miniMapZoomLevelDifference = getZoomDifference();
// Make sure the zoom level difference isn't below the minimum zoom level
if (zoomLevel - getZoomDifference() < mTileProvider.getMinimumZoomLevel()) {
miniMapZoomLevelDifference +=
zoomLevel - getZoomDifference() - mTileProvider.getMinimumZoomLevel();
}
// Shift the screen coordinates into the target zoom level
mTileArea.set(
mTileArea.left >> miniMapZoomLevelDifference,
mTileArea.top >> miniMapZoomLevelDifference,
mTileArea.right >> miniMapZoomLevelDifference,
mTileArea.bottom >> miniMapZoomLevelDifference);
// Limit the area we are interested in for tiles to be the MAP_WIDTH by MAP_HEIGHT and
// centered on the center of the screen
mTileArea.set(
mTileArea.centerX() - (getWidth() / 2),
mTileArea.centerY() - (getHeight() / 2),
mTileArea.centerX() + (getWidth() / 2),
mTileArea.centerY() + (getHeight() / 2));
// Get the area where we will draw the minimap in screen coordinates
mMiniMapCanvasRect.set(
mViewportRect.right - getPadding() - getWidth(),
mViewportRect.bottom - getPadding() - getHeight(),
mViewportRect.right - getPadding(),
mViewportRect.bottom - getPadding());
mMiniMapCanvasRect.offset(-mWorldSize_2, -mWorldSize_2);
// Draw a solid background where the minimap will be drawn with a 2 pixel inset
pC.drawRect(
mMiniMapCanvasRect.left - 2,
mMiniMapCanvasRect.top - 2,
mMiniMapCanvasRect.right + 2,
mMiniMapCanvasRect.bottom + 2,
mPaint);
super.drawTiles(
pC,
projection.getZoomLevel() - miniMapZoomLevelDifference,
TileSystem.getTileSize(),
mTileArea);
}