altosdroid: Split out AltosMapView into separate file

This lets us use the regular layout configuration bits in the .xml
file instead of needing to patch the map object into the display. That
was causing problems when re-entering the map tab as the map view
would somehow end up with a zero width.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 163 insertions, 0 deletions

diff --git a/altosdroid/src/org/altusmetrum/AltosDroid/AltosMapView.java b/altosdroid/src/org/altusmetrum/AltosDroid/AltosMapView.java
new file mode 100644
index 00000000..460a3a25
--- /dev/null
+++ b/altosdroid/src/org/altusmetrum/AltosDroid/AltosMapView.java
@@ -0,0 +1,163 @@
+/*
+ * Copyright © 2015 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosDroid;
+
+import java.util.*;
+import java.io.*;
+
+import org.altusmetrum.altoslib_7.*;
+
+import android.app.Activity;
+import android.graphics.*;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
+import android.view.*;
+import android.widget.*;
+import android.location.Location;
+import android.content.*;
+import android.util.*;
+
+public class AltosMapView extends View implements ScaleGestureDetector.OnScaleGestureListener {
+	ScaleGestureDetector	scale_detector;
+	boolean			scaling;
+	TabMapOffline		tab;
+
+	class Line {
+		AltosLatLon	a, b;
+
+		void paint() {
+			if (a != null && b != null) {
+				AltosPointDouble	a_screen = tab.map.transform.screen(a);
+				AltosPointDouble	b_screen = tab.map.transform.screen(b);
+				tab.paint.setColor(0xff8080ff);
+				tab.canvas.drawLine((float) a_screen.x, (float) a_screen.y,
+						    (float) b_screen.x, (float) b_screen.y,
+						    tab.paint);
+			}
+		}
+
+		void set_a(AltosLatLon a) {
+			this.a = a;
+		}
+
+		void set_b(AltosLatLon b) {
+			this.b = b;
+		}
+
+		Line() {
+		}
+	}
+
+	Line line = new Line();
+
+	private void draw_bitmap(AltosLatLon lat_lon, Bitmap bitmap, int off_x, int off_y) {
+		if (lat_lon != null && tab.map != null && tab.map.transform != null) {
+			AltosPointInt pt = new AltosPointInt(tab.map.transform.screen(lat_lon));
+
+			tab.canvas.drawBitmap(bitmap, pt.x - off_x, pt.y - off_y, tab.paint);
+		}
+	}
+
+	private void draw_positions() {
+		line.set_a(tab.map.last_position);
+		line.set_b(tab.here);
+		line.paint();
+		draw_bitmap(tab.pad, tab.pad_bitmap, tab.pad_off_x, tab.pad_off_y);
+		for (Rocket rocket : tab.rockets.values())
+			rocket.paint();
+		draw_bitmap(tab.here, tab.here_bitmap, tab.here_off_x, tab.here_off_y);
+	}
+
+	@Override public void invalidate() {
+		Rect r = new Rect();
+		getDrawingRect(r);
+		super.invalidate();
+	}
+
+	@Override public void invalidate(int l, int t, int r, int b) {
+		Rect rect = new Rect();
+		getDrawingRect(rect);
+		super.invalidate();
+	}
+
+	@Override
+	protected void onDraw(Canvas view_canvas) {
+		tab.canvas = view_canvas;
+		tab.paint = new Paint(Paint.ANTI_ALIAS_FLAG);
+		tab.paint.setStrokeWidth(tab.stroke_width);
+		tab.paint.setStrokeCap(Paint.Cap.ROUND);
+		tab.paint.setStrokeJoin(Paint.Join.ROUND);
+		tab.paint.setTextSize(40);
+		tab.map.paint();
+		draw_positions();
+		tab.canvas = null;
+	}
+
+	public boolean onScale(ScaleGestureDetector detector) {
+		float	f = detector.getScaleFactor();
+		if (f <= 0.8) {
+			tab.map.set_zoom(tab.map.get_zoom() - 1);
+			return true;
+		}
+		if (f >= 1.2) {
+			tab.map.set_zoom(tab.map.get_zoom() + 1);
+			return true;
+		}
+		return false;
+	}
+
+	public boolean onScaleBegin(ScaleGestureDetector detector) {
+		return true;
+	}
+
+	public void onScaleEnd(ScaleGestureDetector detector) {
+	}
+
+	@Override
+	public boolean dispatchTouchEvent(MotionEvent event) {
+		scale_detector.onTouchEvent(event);
+
+		if (scale_detector.isInProgress()) {
+			scaling = true;
+		}
+
+		if (scaling) {
+			if (event.getAction() == MotionEvent.ACTION_UP) {
+				scaling = false;
+			}
+			return true;
+		}
+
+		if (event.getAction() == MotionEvent.ACTION_DOWN) {
+			tab.map.touch_start((int) event.getX(), (int) event.getY(), true);
+		} else if (event.getAction() == MotionEvent.ACTION_MOVE) {
+			tab.map.touch_continue((int) event.getX(), (int) event.getY(), true);
+		}
+		return true;
+	}
+
+	public void set_tab(TabMapOffline tab) {
+		this.tab = tab;
+	}
+
+	public AltosMapView(Context context, AttributeSet attrs) {
+		super(context, attrs);
+		scale_detector = new ScaleGestureDetector(context, this);
+	}
+}