public void onClick(View v) { if (v == zoomInButton) { if (mapThreadRunning) return; // no updates when download is running float w, h; mScaleFactor *= 2.0; matrix.postScale(2.0f, 2.0f); w = scrWidth / 2.0f; h = scrHeight / 2.0f; matrix.postTranslate(-w, -h); imgOffsetX -= w; imgOffsetY -= h; breakMapThread = true; restartMap(); } else if (v == zoomOutButton) { if (mapThreadRunning) return; // no updates when download is running float w, h; mScaleFactor *= 0.5; matrix.postScale(0.5f, 0.5f); w = scrWidth * 2.0f; h = scrHeight * 2.0f; matrix.postTranslate(w, h); imgOffsetX += w; imgOffsetY += h; breakMapThread = true; restartMap(); } updateUI(true); }
public void run() { int x, y; Bitmap locTile; Canvas canvas; float useLon, useLat, useLonMax, useLatMax; System.gc(); if ((useOverlay.tileX == 0) && (useOverlay.tileY == 0)) return; mapThreadRunning = true; try { if (locMap == null) locMap = Bitmap.createBitmap(tileWidth * 256, tileHeight * 256, Bitmap.Config.ARGB_8888); } catch (OutOfMemoryError oome) { return; } locMap.eraseColor(Color.BLACK); canvas = new Canvas(locMap); useLon = (GeoUtils.tilex2long(useOverlay.tileX, useOverlay.m_zoom) + GeoUtils.tilex2long(useOverlay.tileX + 1, useOverlay.m_zoom)) / 2.0f; useLat = (GeoUtils.tiley2lat(useOverlay.tileY, useOverlay.m_zoom) + GeoUtils.tiley2lat(useOverlay.tileY + 1, useOverlay.m_zoom)) / 2.0f; while (mScaleFactor >= 2.0) { mScaleFactor /= 2.0f; useOverlay.m_zoom++; if (useOverlay.m_zoom > 17) { useOverlay.m_zoom = 17; imgOffsetX -= (scrWidth - (scrWidth * 2.0)) / 2.0; imgOffsetY -= (scrHeight - (scrHeight * 2.0)) / 2.0; } } while (mScaleFactor <= 0.5) { mScaleFactor *= 2.0f; useOverlay.m_zoom--; if (useOverlay.m_zoom < 3) { useOverlay.m_zoom = 3; imgOffsetX -= (scrWidth - (scrWidth * 2.0)) / 2.0; imgOffsetY -= (scrHeight - (scrHeight * 2.0)) / 2.0; } } mScaleFactor = 1.0f; /* if ((wasScaleOp) && (lonCenter!=0.0f) && (latCenter!=0.0f)) { tileX=GeoUtils.long2tilex(lonCenter,m_zoom); tileY=GeoUtils.lat2tiley(latCenter,m_zoom); tileX-=(scrWidth / 256); tileY-=(scrWidth / 256); } else*/ { useOverlay.tileX = GeoUtils.long2tilex(useLon, useOverlay.m_zoom); useOverlay.tileY = GeoUtils.lat2tiley(useLat, useOverlay.m_zoom); } useLon = GeoUtils.tilex2long(useOverlay.tileX - 1, useOverlay.m_zoom); useLat = GeoUtils.tiley2lat(useOverlay.tileY - 1, useOverlay.m_zoom); useLonMax = GeoUtils.tilex2long(useOverlay.tileX + tileWidth + 1, useOverlay.m_zoom); useLatMax = GeoUtils.tiley2lat(useOverlay.tileY + tileHeight + 1, useOverlay.m_zoom); /* if (imgOffsetX>scrWidth) { imgOffsetX=scrWidth/2; } if (imgOffsetX<=-scrWidth) { imgOffsetX=-scrWidth/2; } if (imgOffsetY>scrHeight) { imgOffsetY=scrHeight/2; } if (imgOffsetY<=-scrHeight) { imgOffsetY=-scrHeight/2; }*/ while (imgOffsetX > 0) { imgOffsetX -= 256.0f; useOverlay.tileX--; } while (imgOffsetX <= -256.0) { imgOffsetX += 256.0f; useOverlay.tileX++; } while (imgOffsetY > 0) { imgOffsetY -= 256.0f; useOverlay.tileY--; } while (imgOffsetY <= -256.0) { imgOffsetY += 256.0f; useOverlay.tileY++; } // calculate lat/lon of screen center point /* { int useTileX=tileX,useTileY=tileY; x=(int)((scrWidth/2.0f)+imgOffsetX); y=(int)((scrHeight/2.0f)+imgOffsetY); useTileX+=(x / 256); x=x % 256; useTileY+=(y / 256); y=y % 256; float tileLon1=GeoUtils.tilex2long(useTileX,m_zoom); float tileLat1=GeoUtils.tiley2lat(useTileY,m_zoom); float tileLon2=GeoUtils.tilex2long(useTileX+1,m_zoom); float tileLat2=GeoUtils.tiley2lat(useTileY+1,m_zoom); lonCenter=(((tileLon2-tileLon1)/256.0f)*x)+tileLon1; latCenter=(((tileLat2-tileLat1)/256.0f)*y)+tileLat1; }*/ matrix.setTranslate(imgOffsetX, imgOffsetY); breakMapThread = false; mapThreadRunning = false; for (x = 0; x < tileWidth; x++) for (y = 0; y < tileHeight; y++) { if (breakMapThread) return; locTile = geoUtils.loadMapTile( getContext(), useOverlay.tileX + x, useOverlay.tileY + y, useOverlay.m_zoom, allowNetAccess); if (locTile != null) canvas.drawBitmap(locTile, x * 256, y * 256, null); postInvalidate(); } useOverlay.doDraw(canvas, useLon, useLonMax, useLat, useLatMax, locMap); postInvalidate(); System.gc(); }
public boolean onTouchEvent(MotionEvent ev) { if (mapThreadRunning) return false; // no updates when download is running if (gestureDetector.onTouchEvent(ev)) return true; final int action = ev.getAction(); switch (action & MotionEvent.ACTION_MASK) { case MotionEvent.ACTION_DOWN: { mLastTouchX = ev.getX(); mLastTouchY = ev.getY(); mActivePointerId = ev.getPointerId(0); break; } case MotionEvent.ACTION_POINTER_DOWN: { mLastTouchX2 = ev.getX(); mLastTouchY2 = ev.getY(); if (ev.getPointerCount() > 1) mActivePointerId2 = ev.getPointerId(1); break; } case MotionEvent.ACTION_MOVE: { int pointerIndex; float x = 0.0f, y = 0.0f; try { if ((mActivePointerId != INVALID_POINTER_ID) || (mActivePointerId2 != INVALID_POINTER_ID)) { pointerIndex = ev.findPointerIndex(mActivePointerId); x = ev.getX(pointerIndex); y = ev.getY(pointerIndex); } if ((mActivePointerId != INVALID_POINTER_ID) && (mActivePointerId2 != INVALID_POINTER_ID)) { double d1, d2; pointerIndex = ev.findPointerIndex(mActivePointerId2); if (pointerIndex < 0) return false; float x2 = ev.getX(pointerIndex); float y2 = ev.getY(pointerIndex); d1 = java.lang.Math.sqrt((x - x2) * (x - x2) + (y - y2) * (y - y2)); d2 = java.lang.Math.sqrt( (mLastTouchX - mLastTouchX2) * (mLastTouchX - mLastTouchX2) + (mLastTouchY - mLastTouchY2) * (mLastTouchY - mLastTouchY2)); /* if ((Math.abs(d1)>300) || (Math.abs(d2)>300)) { int i=0; i=i; }*/ if ((d1 > 0) && (d2 > 0)) { float w, h, s; s = (float) (d1 / d2); mScaleFactor *= s; matrix.postScale(s, s); w = scrWidth / 2.0f; h = scrHeight / 2.0f; matrix.postTranslate(w, h); imgOffsetX += w; imgOffsetY += h; } mLastTouchX2 = x2; mLastTouchY2 = y2; } else if (mScaleFactor == 1.0) { mScaleFactor = 1.0f; imgOffsetX += (x - mLastTouchX); imgOffsetY += (y - mLastTouchY); matrix.setTranslate(imgOffsetX, imgOffsetY); } if ((mActivePointerId != INVALID_POINTER_ID) || (mActivePointerId2 != INVALID_POINTER_ID)) { mLastTouchX = x; mLastTouchY = y; } } catch (Exception e) { // can be caused by // pointerIndex= ev.findPointerIndex(mActivePointerId); // x= ev.getX(pointerIndex); // above which seems to be a Android bug } invalidate(); break; } case MotionEvent.ACTION_UP: case MotionEvent.ACTION_POINTER_UP: { breakMapThread = true; mActivePointerId = INVALID_POINTER_ID; mActivePointerId2 = INVALID_POINTER_ID; restartMap(); break; } } return true; }