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author | Ivo van Dongen <info@ivovandongen.nl> | 2017-09-14 21:23:07 +0300 |
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committer | Ivo van Dongen <ivovandongen@users.noreply.github.com> | 2017-09-22 23:33:56 +0300 |
commit | 5d12503302dff168137d6f3b1444e4dc32ad44dd (patch) | |
tree | 98128bdddb287c30b2c1445eb88d44e9a97d57ab /platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/renderer/MapRenderer.java | |
parent | 15a47d116a0fc15d249b37574fcd932ce88909df (diff) | |
download | qtlocation-mapboxgl-5d12503302dff168137d6f3b1444e4dc32ad44dd.tar.gz |
[android] self-contained map renderer
- Isolates the GL thread in a MapRenderer class with a native peer
Diffstat (limited to 'platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/renderer/MapRenderer.java')
-rw-r--r-- | platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/renderer/MapRenderer.java | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/renderer/MapRenderer.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/renderer/MapRenderer.java new file mode 100644 index 0000000000..772ecb79fb --- /dev/null +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/renderer/MapRenderer.java @@ -0,0 +1,119 @@ +package com.mapbox.mapboxsdk.maps.renderer; + +import android.content.Context; +import android.opengl.GLSurfaceView; + +import com.mapbox.mapboxsdk.storage.FileSource; + +import javax.microedition.khronos.egl.EGLConfig; +import javax.microedition.khronos.opengles.GL10; + +/** + * The {@link MapRenderer} encapsulates the GL thread. + * <p> + * Performs actions on the GL thread to manage the GL resources and + * render on the one end and acts as a scheduler to request work to + * be performed on the GL thread on the other. + */ +public class MapRenderer implements GLSurfaceView.Renderer, MapRendererScheduler { + + // Holds the pointer to the native peer after initialisation + private long nativePtr = 0; + + private final GLSurfaceView glSurfaceView; + + public MapRenderer(Context context, GLSurfaceView glSurfaceView) { + this.glSurfaceView = glSurfaceView; + + FileSource fileSource = FileSource.getInstance(context); + float pixelRatio = context.getResources().getDisplayMetrics().density; + String programCacheDir = context.getCacheDir().getAbsolutePath(); + + // Initialise native peer + nativeInitialize(this, fileSource, pixelRatio, programCacheDir); + } + + @Override + public void onSurfaceCreated(GL10 gl, EGLConfig config) { + nativeOnSurfaceCreated(); + } + + @Override + public 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); + } + + @Override + public void onDrawFrame(GL10 gl) { + nativeRender(); + } + + /** + * May be called from any thread. + * <p> + * Called from the renderer frontend to schedule a render. + */ + @Override + public void requestRender() { + glSurfaceView.requestRender(); + } + + /** + * May be called from any thread. + * <p> + * Schedules work to be performed on the MapRenderer thread. + * + * @param runnable the runnable to execute + */ + @Override + public void queueEvent(Runnable runnable) { + glSurfaceView.queueEvent(runnable); + } + + /** + * May be called from any thread. + * <p> + * Called from the native peer to schedule work on the GL + * thread. Explicit override for easier to read jni code. + * + * @param runnable the runnable to execute + * @see MapRendererRunnable + */ + void queueEvent(MapRendererRunnable runnable) { + this.queueEvent((Runnable) runnable); + } + + private native void nativeInitialize(MapRenderer self, + FileSource fileSource, + float pixelRatio, + String programCacheDir); + + @Override + protected native void finalize() throws Throwable; + + private native void nativeOnSurfaceCreated(); + + private native void nativeOnSurfaceChanged(int width, int height); + + private native void nativeRender(); + +} |