private void refreshMapInternal(DrawSettings drawSettings) {
handler.removeMessages(MAP_REFRESH_MESSAGE);
SurfaceHolder holder = getHolder();
long ms = SystemClock.elapsedRealtime();
synchronized (holder) {
Canvas canvas = holder.lockCanvas();
if (canvas != null) {
try {
final float ratioy = mapPosition == OsmandSettings.BOTTOM_CONSTANT ? 0.8f : 0.5f;
final int cy = (int) (ratioy * getHeight());
if (currentViewport.getPixWidth() != getWidth()
|| currentViewport.getPixHeight() != getHeight()
|| currentViewport.getCenterPixelY() != cy) {
currentViewport.setPixelDimensions(getWidth(), getHeight(), 0.5f, ratioy);
refreshBufferImage(drawSettings);
}
// make copy to avoid concurrency
RotatedTileBox viewportToDraw = currentViewport.copy();
fillCanvas(canvas, drawSettings);
drawOverMap(canvas, viewportToDraw, drawSettings);
} finally {
holder.unlockCanvasAndPost(canvas);
}
}
if (MEASURE_FPS) {
main.calculateFPS(ms, SystemClock.elapsedRealtime());
}
}
}
private void changeZoomPosition(float dz, float angle) {
final QuadPoint cp = initialViewport.getCenterPixelPoint();
float dx = cp.x - initialMultiTouchCenterPoint.x;
float dy = cp.y - initialMultiTouchCenterPoint.y;
final RotatedTileBox calc = initialViewport.copy();
calc.setLatLonCenter(initialCenterLatLon.getLatitude(), initialCenterLatLon.getLongitude());
float calcZoom = initialViewport.getZoom() + dz + initialViewport.getZoomScale();
float calcRotate = calc.getRotate() + angle;
calc.setRotate(calcRotate);
calc.setZoomAnimation(dz);
final LatLon r = calc.getLatLonFromPixel(cp.x + dx, cp.y + dy);
setLatLon(r.getLatitude(), r.getLongitude());
zoomToAnimate(calcZoom, true);
rotateToAnimate(calcRotate);
}
private void drawBasemap(Canvas canvas) {
if (bufferImgLoc != null) {
float rot = -bufferImgLoc.getRotate();
canvas.rotate(rot, currentViewport.getCenterPixelX(), currentViewport.getCenterPixelY());
final RotatedTileBox calc = currentViewport.copy();
calc.setRotate(bufferImgLoc.getRotate());
int cz = getZoom();
QuadPoint lt = bufferImgLoc.getLeftTopTile(cz);
QuadPoint rb = bufferImgLoc.getRightBottomTile(cz);
final float x1 = calc.getPixXFromTile(lt.x, lt.y, cz);
final float x2 = calc.getPixXFromTile(rb.x, rb.y, cz);
final float y1 = calc.getPixYFromTile(lt.x, lt.y, cz);
final float y2 = calc.getPixYFromTile(rb.x, rb.y, cz);
if (!bufferBitmap.isRecycled()) {
canvas.drawBitmap(bufferBitmap, null, new RectF(x1, y1, x2, y2), paintImg);
}
canvas.rotate(-rot, currentViewport.getCenterPixelX(), currentViewport.getCenterPixelY());
}
}