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Scale map style to match screen DPI

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This commit is contained in:
Leith Bade
2014-11-13 06:57:14 +11:00
parent 4383385139
commit ce2ffef38a
1 changed files with 23 additions and 16 deletions
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39
android/java/lib/src/main/java/com/mapbox/mapboxgl/lib/MapView.java
View File

@@ -10,6 +10,7 @@ import android.graphics.PointF;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.GestureDetector;
import android.view.InputDevice;
@@ -59,6 +60,9 @@ public class MapView extends SurfaceView {
// Used to load map tiles
private String mAccessToken;
// Used to handle DPI scaling
private float mScreenDensity = 1.0f;
// Touch gesture detectors
private GestureDetector mGestureDetector;
private ScaleGestureDetector mScaleGestureDetector;
@@ -115,6 +119,9 @@ public class MapView extends SurfaceView {
return;
}
// Get the screen's density
mScreenDensity = context.getResources().getDisplayMetrics().density;
// Get the cache path
String cachePath = context.getCacheDir().getAbsolutePath();
String dataPath = context.getFilesDir().getAbsolutePath();
@@ -465,7 +472,7 @@ public class MapView extends SurfaceView {
int height) {
Log.v(TAG, "surfaceChanged");
Log.i(TAG, "resize " + format + " " + width + " " + height);
mNativeMapView.resize(width, height);
mNativeMapView.resize((int) (width / mScreenDensity), (int) (height / mScreenDensity), mScreenDensity, width, height);
}
}
@@ -516,10 +523,10 @@ public class MapView extends SurfaceView {
mNativeMapView.cancelTransitions();
if (zoomIn) {
mNativeMapView.scaleBy(2.0, x, y, 0.3);
mNativeMapView.scaleBy(2.0, x / mScreenDensity, y / mScreenDensity, 0.3);
} else {
// TODO two finger tap zoom out
mNativeMapView.scaleBy(0.5, x, y, 0.3);
mNativeMapView.scaleBy(0.5, x / mScreenDensity, y / mScreenDensity, 0.3);
}
}
@@ -654,8 +661,8 @@ public class MapView extends SurfaceView {
*
* // Cancel any animation mNativeMapView.cancelTransitions();
*
* mNativeMapView.moveBy(velocityX * duration / 2.0, velocityY *
* duration / 2.0, duration);
* mNativeMapView.moveBy(velocityX * duration / 2.0 / mScreenDensity, velocityY *
* duration / 2.0 / mScreenDensity, duration);
*
* return true;
*/
@@ -675,7 +682,7 @@ public class MapView extends SurfaceView {
// transitions with touch
// Scroll the map
mNativeMapView.moveBy(-distanceX, -distanceY);
mNativeMapView.moveBy(-distanceX / mScreenDensity, -distanceY / mScreenDensity);
return true;
}
}
@@ -740,7 +747,7 @@ public class MapView extends SurfaceView {
// Scale the map
mNativeMapView.scaleBy(detector.getScaleFactor(),
detector.getFocusX(), detector.getFocusY());
detector.getFocusX() / mScreenDensity, detector.getFocusY() / mScreenDensity);
return true;
}
@@ -818,8 +825,8 @@ public class MapView extends SurfaceView {
double bearing = mNativeMapView.getBearing();
bearing += detector.getRotationDegreesDelta() * Math.PI / 180.0;
Log.d("rotate", "rotate to " + bearing);
mNativeMapView.setBearing(bearing, detector.getFocusX(),
detector.getFocusY());
mNativeMapView.setBearing(bearing, detector.getFocusX() / mScreenDensity,
detector.getFocusY() / mScreenDensity);
return true;
}
@@ -874,7 +881,7 @@ public class MapView extends SurfaceView {
mNativeMapView.cancelTransitions();
// Move left
mNativeMapView.moveBy(scrollDist, 0.0);
mNativeMapView.moveBy(scrollDist / mScreenDensity, 0.0 / mScreenDensity);
return true;
case KeyEvent.KEYCODE_DPAD_RIGHT:
@@ -886,7 +893,7 @@ public class MapView extends SurfaceView {
mNativeMapView.cancelTransitions();
// Move right
mNativeMapView.moveBy(-scrollDist, 0.0);
mNativeMapView.moveBy(-scrollDist / mScreenDensity, 0.0 / mScreenDensity);
return true;
case KeyEvent.KEYCODE_DPAD_UP:
@@ -898,7 +905,7 @@ public class MapView extends SurfaceView {
mNativeMapView.cancelTransitions();
// Move up
mNativeMapView.moveBy(0.0, scrollDist);
mNativeMapView.moveBy(0.0 / mScreenDensity, scrollDist / mScreenDensity);
return true;
case KeyEvent.KEYCODE_DPAD_DOWN:
@@ -910,7 +917,7 @@ public class MapView extends SurfaceView {
mNativeMapView.cancelTransitions();
// Move down
mNativeMapView.moveBy(0.0, -scrollDist);
mNativeMapView.moveBy(0.0 / mScreenDensity, -scrollDist / mScreenDensity);
return true;
default:
@@ -988,7 +995,7 @@ public class MapView extends SurfaceView {
mNativeMapView.cancelTransitions();
// Scroll the map
mNativeMapView.moveBy(-10.0 * event.getX(), -10.0 * event.getY());
mNativeMapView.moveBy(-10.0 * event.getX() / mScreenDensity, -10.0 * event.getY() / mScreenDensity);
return true;
// Trackball was pushed in so start tracking and tell system we are
@@ -1085,8 +1092,8 @@ public class MapView extends SurfaceView {
float scrollDist = event.getAxisValue(MotionEvent.AXIS_VSCROLL);
// Scale the map by the appropriate power of two factor
mNativeMapView.scaleBy(Math.pow(2.0, scrollDist), event.getX(),
event.getY());
mNativeMapView.scaleBy(Math.pow(2.0, scrollDist), event.getX() / mScreenDensity,
event.getY() / mScreenDensity);
return true;