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matthewfan
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Nov 7, 2016
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140 changes: 140 additions & 0 deletions
140
canvasgl/src/main/java/com/chillingvan/canvasgl/OffScreenCanvas.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| package com.chillingvan.canvasgl; | ||
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| import android.graphics.Bitmap; | ||
| import android.graphics.Rect; | ||
| import android.opengl.GLSurfaceView; | ||
| import android.os.Handler; | ||
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| import com.chillingvan.canvasgl.glview.GLView; | ||
| import com.chillingvan.canvasgl.glview.texture.gles.GLThread; | ||
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| import javax.microedition.khronos.egl.EGL10; | ||
| import javax.microedition.khronos.egl.EGLConfig; | ||
| import javax.microedition.khronos.egl.EGLDisplay; | ||
| import javax.microedition.khronos.egl.EGLSurface; | ||
| import javax.microedition.khronos.opengles.GL10; | ||
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| /** | ||
| * Created by Chilling on 2016/11/7. | ||
| */ | ||
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| public abstract class OffScreenCanvas implements GLSurfaceView.Renderer{ | ||
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| protected final GLThread mGLThread; | ||
| private int width; | ||
| private int height; | ||
| protected ICanvasGL mCanvas; | ||
| public GL10 mGL; | ||
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| public OffScreenCanvas() { | ||
| this(0, 0); | ||
| } | ||
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| public OffScreenCanvas(int width, int height) { | ||
| this.width = width; | ||
| this.height = height; | ||
| mGLThread = new GLThread.Builder().setRenderMode(getRenderMode()) | ||
| .setEglWindowSurfaceFactory(new SurfaceFactory()) | ||
| .setRenderer(this).createGLThread(); | ||
| } | ||
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| public void setSize(int width, int height) { | ||
| this.width = width; | ||
| this.height = height; | ||
| } | ||
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| public void start() { | ||
| mGLThread.start(); | ||
| mGLThread.surfaceCreated(); | ||
| mGLThread.onWindowResize(width, height); | ||
| mGLThread.requestRender(); | ||
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| } | ||
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| public void end() { | ||
| if (mGLThread != null) { | ||
| mGLThread.requestExitAndWait(); | ||
| } | ||
| } | ||
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| @Override | ||
| protected void finalize() throws Throwable { | ||
| try { | ||
| if (mGLThread != null) { | ||
| // GLThread may still be running if this view was never | ||
| // attached to a window. | ||
| mGLThread.requestExitAndWait(); | ||
| } | ||
| } finally { | ||
| super.finalize(); | ||
| } | ||
| } | ||
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| private class SurfaceFactory implements GLThread.EGLWindowSurfaceFactory { | ||
| @Override | ||
| public EGLSurface createWindowSurface(EGL10 egl, EGLDisplay display, EGLConfig config, Object nativeWindow) { | ||
| int[] attribList = new int[] { | ||
| EGL10.EGL_WIDTH, width, | ||
| EGL10.EGL_HEIGHT, height, | ||
| EGL10.EGL_NONE | ||
| }; | ||
| return egl.eglCreatePbufferSurface(display, config, attribList); | ||
| } | ||
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| @Override | ||
| public void destroySurface(EGL10 egl, EGLDisplay display, EGLSurface surface) { | ||
| egl.eglDestroySurface(display, surface); | ||
| } | ||
| } | ||
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| @Override | ||
| public void onSurfaceCreated(GL10 gl, EGLConfig config) { | ||
| Loggers.d("BaseGLTextureView", "onSurfaceCreated: "); | ||
| mCanvas = new CanvasGL(); | ||
| } | ||
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| @Override | ||
| public void onSurfaceChanged(GL10 gl, int width, int height) { | ||
| Loggers.d("BaseGLTextureView", "onSurfaceChanged: "); | ||
| mCanvas.setSize(width, height); | ||
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| } | ||
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| @Override | ||
| public void onDrawFrame(GL10 gl) { | ||
| mGL = gl; | ||
| onGLDraw(mCanvas); | ||
| } | ||
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| protected int getRenderMode() { | ||
| return GLThread.RENDERMODE_WHEN_DIRTY; | ||
| } | ||
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| protected abstract void onGLDraw(ICanvasGL canvas); | ||
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| public void getDrawingBitmap(final Rect rect, final GLView.GetDrawingCacheCallback getDrawingCacheCallback) { | ||
| final Handler handler = new Handler(); | ||
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| mGLThread.queueEvent(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| if (mGL == null) { | ||
| return; | ||
| } | ||
| onDrawFrame(mGL); | ||
| onDrawFrame(mGL); | ||
| final Bitmap bitmapFromGLSurface = OpenGLUtil.createBitmapFromGLSurface(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, mGL, height); | ||
| handler.post(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| getDrawingCacheCallback.onFetch(bitmapFromGLSurface); | ||
| } | ||
| }); | ||
| } | ||
| }); | ||
| mGLThread.requestRender(); | ||
| } | ||
| } |
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46 changes: 46 additions & 0 deletions
46
canvasglsample/src/main/java/com/chillingvan/canvasglsample/offscreen/OffScreenActivity.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package com.chillingvan.canvasglsample.offscreen; | ||
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| import android.app.Activity; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.BitmapFactory; | ||
| import android.graphics.Rect; | ||
| import android.os.Bundle; | ||
| import android.widget.ImageView; | ||
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| import com.chillingvan.canvasgl.ICanvasGL; | ||
| import com.chillingvan.canvasgl.OffScreenCanvas; | ||
| import com.chillingvan.canvasgl.glview.GLView; | ||
| import com.chillingvan.canvasglsample.R; | ||
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| public class OffScreenActivity extends Activity { | ||
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| private ImageView imageView; | ||
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| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_off_screen); | ||
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| imageView = (ImageView) findViewById(R.id.off_screen_img_v); | ||
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| OffScreenCanvas offScreenCanvas = new OffScreenCanvas(400, 400) { | ||
| @Override | ||
| protected void onGLDraw(ICanvasGL canvas) { | ||
| Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.lenna); | ||
| canvas.drawBitmap(bitmap, 0, 0); | ||
| runOnUiThread(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| getDrawingBitmap(new Rect(0, 0, 300, 300), new GLView.GetDrawingCacheCallback() { | ||
| @Override | ||
| public void onFetch(final Bitmap bitmap) { | ||
| imageView.setImageBitmap(bitmap); | ||
| } | ||
| }); | ||
| } | ||
| }); | ||
| } | ||
| }; | ||
| offScreenCanvas.start(); | ||
| } | ||
| } |
23 changes: 23 additions & 0 deletions
23
canvasglsample/src/main/res/layout/activity_off_screen.xml
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| <?xml version="1.0" encoding="utf-8"?> | ||
| <RelativeLayout | ||
| android:id="@+id/activity_off_screen" | ||
| xmlns:android="http://schemas.android.com/apk/res/android" | ||
| xmlns:tools="http://schemas.android.com/tools" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="match_parent" | ||
| android:paddingBottom="@dimen/activity_vertical_margin" | ||
| android:paddingLeft="@dimen/activity_horizontal_margin" | ||
| android:paddingRight="@dimen/activity_horizontal_margin" | ||
| android:paddingTop="@dimen/activity_vertical_margin" | ||
| tools:context="com.chillingvan.canvasglsample.offscreen.OffScreenActivity"> | ||
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| <ImageView | ||
| android:id="@+id/off_screen_img_v" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="match_parent" | ||
| android:scaleType="centerInside" | ||
| /> | ||
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| </RelativeLayout> |