[android] - wait for the initial render to occur before showing the m…

…ap to the end-user

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapView.java

@@ -3,6 +3,7 @@
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.PointF;
+import android.graphics.drawable.ColorDrawable;
 import android.opengl.GLSurfaceView;
 import android.os.Build;
 import android.os.Bundle;
@@ -126,6 +127,11 @@ protected void initialize(@NonNull final Context context, @NonNull final MapboxM
       // in IDE layout editor, just return
       return;
     }
+
+    // hide surface until map is fully loaded #10990
+    setForeground(new ColorDrawable(options.getForegroundLoadColor()));
+    addOnMapChangedListener(new InitialRenderCallback(this));
+
     mapboxMapOptions = options;
 
     // inflate view
@@ -283,11 +289,12 @@ public void onCreate(@Nullable Bundle savedInstanceState) {
   }
 
   private void initialiseDrawingSurface(MapboxMapOptions options) {
+    String localFontFamily = options.getLocalIdeographFontFamily();
     if (options.getTextureMode()) {
       TextureView textureView = new TextureView(getContext());
-      String localFontFamily = options.getLocalIdeographFontFamily();
       boolean translucentSurface = options.getTranslucentTextureSurface();
-      mapRenderer = new TextureViewMapRenderer(getContext(), textureView, localFontFamily, translucentSurface) {
+      mapRenderer = new TextureViewMapRenderer(getContext(),
+        textureView, localFontFamily, translucentSurface) {
         @Override
         protected void onSurfaceCreated(GL10 gl, EGLConfig config) {
           MapView.this.onSurfaceCreated();
@@ -299,7 +306,7 @@ protected void onSurfaceCreated(GL10 gl, EGLConfig config) {
     } else {
       GLSurfaceView glSurfaceView = new GLSurfaceView(getContext());
       glSurfaceView.setZOrderMediaOverlay(mapboxMapOptions.getRenderSurfaceOnTop());
-      mapRenderer = new GLSurfaceViewMapRenderer(getContext(), glSurfaceView, options.getLocalIdeographFontFamily()) {
+      mapRenderer = new GLSurfaceViewMapRenderer(getContext(), glSurfaceView, localFontFamily) {
         @Override
         public void onSurfaceCreated(GL10 gl, EGLConfig config) {
           MapView.this.onSurfaceCreated();
@@ -981,6 +988,37 @@ public void onFocalPointChanged(PointF pointF) {
     }
   }
 
+  /**
+   * The initial render callback waits for rendering to happen before making the map visible for end-users.
+   * We wait for the second DID_FINISH_RENDERING_FRAME map change event as the first will still show a black surface.
+   */
+  private static class InitialRenderCallback implements OnMapChangedListener {
+
+    private WeakReference<MapView> weakReference;
+    private int renderCount;
+    private boolean styleLoaded;
+
+    InitialRenderCallback(MapView mapView) {
+      this.weakReference = new WeakReference<>(mapView);
+    }
+
+    @Override
+    public void onMapChanged(int change) {
+      if (change == MapView.DID_FINISH_LOADING_STYLE) {
+        styleLoaded = true;
+      } else if (styleLoaded && change == MapView.DID_FINISH_RENDERING_FRAME) {
+        renderCount++;
+        if (renderCount == 2) {
+          MapView mapView = weakReference.get();
+          if (mapView != null && !mapView.isDestroyed()) {
+            mapView.setForeground(null);
+            mapView.removeOnMapChangedListener(this);
+          }
+        }
+      }
+    }
+  }
+
   private class GesturesManagerInteractionListener implements MapboxMap.OnGesturesManagerInteractionListener {
 
     @Override

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapboxMapOptions.java

@@ -30,6 +30,7 @@
  */
 public class MapboxMapOptions implements Parcelable {
 
+  private static final int LIGHT_GRAY = 0xFFF0E9E1; // RGB(240, 233, 225))
   private static final float FOUR_DP = 4f;
   private static final float NINETY_TWO_DP = 92f;
   private static final int UNDEFINED_COLOR = -1;
@@ -73,6 +74,9 @@ public class MapboxMapOptions implements Parcelable {
   private boolean textureMode;
   private boolean translucentTextureSurface;
 
+  @ColorInt
+  private int foregroundLoadColor;
+
   private String style;
 
   private float pixelRatio;
@@ -124,6 +128,7 @@ private MapboxMapOptions(Parcel in) {
     zMediaOverlay = in.readByte() != 0;
     localIdeographFontFamily = in.readString();
     pixelRatio = in.readFloat();
+    foregroundLoadColor = in.readInt();
   }
 
   /**
@@ -209,7 +214,6 @@ public static MapboxMapOptions createFromAttributes(@NonNull Context context, @N
           FOUR_DP * pxlRatio)),
         (int) (typedArray.getDimension(R.styleable.mapbox_MapView_mapbox_uiAttributionMarginBottom,
           FOUR_DP * pxlRatio))});
-
       mapboxMapOptions.textureMode(
         typedArray.getBoolean(R.styleable.mapbox_MapView_mapbox_renderTextureMode, false));
       mapboxMapOptions.translucentTextureSurface(
@@ -222,6 +226,9 @@ public static MapboxMapOptions createFromAttributes(@NonNull Context context, @N
         typedArray.getString(R.styleable.mapbox_MapView_mapbox_localIdeographFontFamily));
       mapboxMapOptions.pixelRatio(
         typedArray.getFloat(R.styleable.mapbox_MapView_mapbox_pixelRatio, 0));
+      mapboxMapOptions.foregroundLoadColor(
+        typedArray.getInt(R.styleable.mapbox_MapView_mapbox_foregroundLoadColor, LIGHT_GRAY)
+      );
     } finally {
       typedArray.recycle();
     }
@@ -521,6 +528,17 @@ public MapboxMapOptions translucentTextureSurface(boolean translucentTextureSurf
     return this;
   }
 
+  /**
+   * Set the MapView foreground color that is used when the map surface is being created.
+   *
+   * @param loadColor the color to show during map creation
+   * @return This
+   */
+  public MapboxMapOptions foregroundLoadColor(@ColorInt int loadColor) {
+    this.foregroundLoadColor = loadColor;
+    return this;
+  }
+
   /**
    * Enable tile pre-fetching. Loads tiles at a lower zoom-level to pre-render
    * a low resolution preview while more detailed tiles are loaded.
@@ -819,6 +837,16 @@ public boolean getTranslucentTextureSurface() {
     return translucentTextureSurface;
   }
 
+  /**
+   * Returns the current configured foreground color that is used during map creation.
+   *
+   * @return the load color
+   */
+  @ColorInt
+  public int getForegroundLoadColor() {
+    return foregroundLoadColor;
+  }
+
   /**
    * Returns the font-family for locally overriding generation of glyphs in the
    * 'CJK Unified Ideographs' and 'Hangul Syllables' ranges.
@@ -892,6 +920,7 @@ public void writeToParcel(Parcel dest, int flags) {
     dest.writeByte((byte) (zMediaOverlay ? 1 : 0));
     dest.writeString(localIdeographFontFamily);
     dest.writeFloat(pixelRatio);
+    dest.writeInt(foregroundLoadColor);
   }
 
   @Override

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/renderer/MapRenderer.java

@@ -24,10 +24,10 @@ public abstract class MapRenderer implements MapRendererScheduler {
   private MapboxMap.OnFpsChangedListener onFpsChangedListener;
 
   public MapRenderer(Context context, String localIdeographFontFamily) {
-
     FileSource fileSource = FileSource.getInstance(context);
     float pixelRatio = context.getResources().getDisplayMetrics().density;
     String programCacheDir = context.getCacheDir().getAbsolutePath();
+
     // Initialise native peer
     nativeInitialize(this, fileSource, pixelRatio, programCacheDir, localIdeographFontFamily);
   }
@@ -63,24 +63,6 @@ protected void onSurfaceCreated(GL10 gl, EGLConfig config) {
 
   @CallSuper
   protected void onSurfaceChanged(GL10 gl, int width, int height) {
-    if (width < 0) {
-      throw new IllegalArgumentException("fbWidth cannot be negative.");
-    }
-
-    if (height < 0) {
-      throw new IllegalArgumentException("fbHeight cannot be negative.");
-    }
-
-    if (width > 65535) {
-      throw new IllegalArgumentException(
-        "fbWidth cannot be greater than 65535.");
-    }
-
-    if (height > 65535) {
-      throw new IllegalArgumentException(
-        "fbHeight cannot be greater than 65535.");
-    }
-
     gl.glViewport(0, 0, width, height);
     nativeOnSurfaceChanged(width, height);
   }
@@ -138,5 +120,4 @@ private void updateFps() {
       frames = 0;
     }
   }
-
 }

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/renderer/glsurfaceview/GLSurfaceViewMapRenderer.java

@@ -21,7 +21,9 @@ public class GLSurfaceViewMapRenderer extends MapRenderer implements GLSurfaceVi
 
   private final GLSurfaceView glSurfaceView;
 
-  public GLSurfaceViewMapRenderer(Context context, GLSurfaceView glSurfaceView, String localIdeographFontFamily) {
+  public GLSurfaceViewMapRenderer(Context context,
+                                  GLSurfaceView glSurfaceView,
+                                  String localIdeographFontFamily) {
     super(context, localIdeographFontFamily);
     this.glSurfaceView = glSurfaceView;
     glSurfaceView.setEGLContextClientVersion(2);

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyFactory.java

@@ -5,9 +5,7 @@
 import android.support.annotation.ColorInt;
 
 import com.mapbox.mapboxsdk.style.expressions.Expression;
-
-import java.text.DecimalFormat;
-import java.util.Locale;
+import com.mapbox.mapboxsdk.utils.ColorUtils;
 
 /**
  * Constructs paint/layout properties for Layers
@@ -2404,11 +2402,11 @@ public static PropertyValue<Expression> textOptional(Expression value) {
    *
    * @param color Android color int
    * @return String rgba color
+   * @deprecated use {@link com.mapbox.mapboxsdk.utils.ColorUtils#colorToRgbaString(int)} instead
    */
+  @Deprecated
   public static String colorToRgbaString(@ColorInt int color) {
-    String alpha = new DecimalFormat("#.###").format(((float)((color >> 24) & 0xFF)) / 255.0f);
-    return String.format(Locale.US, "rgba(%d, %d, %d, %s)",
-      (color >> 16) & 0xFF, (color >> 8) & 0xFF, color & 0xFF, alpha);
+    return ColorUtils.colorToRgbaString(color);
   }
 
   /**
@@ -2419,8 +2417,10 @@ public static String colorToRgbaString(@ColorInt int color) {
    *
    * @param color Android color int
    * @return int rgba array
+   * @deprecated use {@link com.mapbox.mapboxsdk.utils.ColorUtils#colorToRgbaArray(int)} instead
    */
+  @Deprecated
   public static float[] colorToRgbaArray(@ColorInt int color) {
-    return new float[] {(color >> 16) & 0xFF, (color >> 8) & 0xFF, color & 0xFF, ((color >> 24) & 0xFF) / 255.0f};
+    return ColorUtils.colorToRgbaArray(color);
   }
 }

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/property_factory.java.ejs

@@ -9,9 +9,7 @@ package com.mapbox.mapboxsdk.style.layers;
 import android.support.annotation.ColorInt;
 
 import com.mapbox.mapboxsdk.style.expressions.Expression;
-
-import java.text.DecimalFormat;
-import java.util.Locale;
+import com.mapbox.mapboxsdk.utils.ColorUtils;
 
 /**
  * Constructs paint/layout properties for Layers
@@ -94,11 +92,11 @@ public class PropertyFactory {
    *
    * @param color Android color int
    * @return String rgba color
+   * @deprecated use {@link com.mapbox.mapboxsdk.utils.ColorUtils#colorToRgbaString(int)} instead
    */
+  @Deprecated
   public static String colorToRgbaString(@ColorInt int color) {
-    String alpha = new DecimalFormat("#.###").format(((float)((color >> 24) & 0xFF)) / 255.0f);
-    return String.format(Locale.US, "rgba(%d, %d, %d, %s)",
-      (color >> 16) & 0xFF, (color >> 8) & 0xFF, color & 0xFF, alpha);
+    return ColorUtils.colorToRgbaString(color);
   }
 
   /**
@@ -109,8 +107,10 @@ public class PropertyFactory {
    *
    * @param color Android color int
    * @return int rgba array
+   * @deprecated use {@link com.mapbox.mapboxsdk.utils.ColorUtils#colorToRgbaArray(int)} instead
    */
+  @Deprecated
   public static float[] colorToRgbaArray(@ColorInt int color) {
-    return new float[] {(color >> 16) & 0xFF, (color >> 8) & 0xFF, color & 0xFF, ((color >> 24) & 0xFF) / 255.0f};
+    return ColorUtils.colorToRgbaArray(color);
   }
 }

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/ColorUtils.java

@@ -15,6 +15,8 @@
 import com.mapbox.mapboxsdk.R;
 import com.mapbox.mapboxsdk.exceptions.ConversionException;
 
+import java.text.DecimalFormat;
+import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -139,6 +141,58 @@ public static int rgbaToColor(String value) {
     }
   }
 
+  /**
+   * Converts Android color int to "rbga(r, g, b, a)" String equivalent.
+   * <p>
+   * Alpha value will be converted from 0-255 range to 0-1.
+   * </p>
+   *
+   * @param color Android color int
+   * @return String rgba color
+   */
+  public static String colorToRgbaString(@ColorInt int color) {
+    String alpha = new DecimalFormat("#.###").format(((float)((color >> 24) & 0xFF)) / 255.0f);
+    return String.format(Locale.US, "rgba(%d, %d, %d, %s)",
+      (color >> 16) & 0xFF, (color >> 8) & 0xFF, color & 0xFF, alpha);
+  }
+
+  /**
+   * Converts Android color int to rgba float array.
+   * <p>
+   * Returned RGB values range from 0 to 255.
+   * Alpha value ranges from 0-1.
+   * </p>
+   *
+   * @param color Android color int
+   * @return float rgba array, rgb values range from 0-255, alpha from 0-1
+   */
+  public static float[] colorToRgbaArray(@ColorInt int color) {
+    return new float[] {
+      (color >> 16) & 0xFF,            // r (0-255)
+      (color >> 8) & 0xFF,             // g (0-255)
+      color & 0xFF,                    // b (0-255)
+      ((color >> 24) & 0xFF) / 255.0f  // a (0-1)
+    };
+  }
+
+  /**
+   * Converts Android color int to GL rgba float array.
+   * <p>
+   * Returned values range from 0-1.
+   * </p>
+   *
+   * @param color Android color int
+   * @return float rgba array, values range from 0 to 1
+   */
+  public static float[] colorToGlRgbaArray(@ColorInt int color) {
+    return new float[] {
+      ((color >> 16) & 0xFF) / 255.0f, // r (0-1)
+      ((color >> 8) & 0xFF) / 255.0f,  // g (0-1)
+      (color & 0xFF) / 255.0f,         // b (0-1)
+      ((color >> 24) & 0xFF) / 255.0f  // a (0-1)
+    };
+  }
+
   private static int getColorCompat(Context context, int id) {
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
       return context.getResources().getColor(id, context.getTheme());

platform/android/MapboxGLAndroidSDK/src/main/res-public/values/public.xml

@@ -65,6 +65,7 @@
     <!-- Use TextureView-->
     <public name="mapbox_renderTextureMode" type="attr" />
     <public name="mapbox_renderTextureTranslucentSurface" type="attr" />
+    <public name="mapbox_foregroundLoadColor" type="attr" />
 
     <public name="mapbox_enableTilePrefetch" type="attr" />
     <public name="mapbox_enableZMediaOverlay" type="attr" />

platform/android/MapboxGLAndroidSDK/src/main/res/values/attrs.xml

@@ -103,6 +103,7 @@
         <!-- Use TextureView-->
         <attr name="mapbox_renderTextureMode" format="boolean"/>
         <attr name="mapbox_renderTextureTranslucentSurface" format="boolean"/>
+        <attr name="mapbox_foregroundLoadColor" format="color"/>
 
         <attr name="mapbox_enableTilePrefetch" format="boolean"/>
         <attr name="mapbox_enableZMediaOverlay" format="boolean"/>