Add preliminary support for text rendering. (a1db5740) · Commits · e / os / android_frameworks_base

core/java/android/view/GLES20Canvas.java

+33 −4

Original line number	Diff line number	Diff line
		@@ -32,6 +32,11 @@ import android.graphics.RectF;
		import android.graphics.Region;
		import android.graphics.Shader;
		import android.graphics.SweepGradient;
		import android.graphics.TemporaryBuffer;
		import android.text.GraphicsOperations;
		import android.text.SpannableString;
		import android.text.SpannedString;
		import android.text.TextUtils;

		import javax.microedition.khronos.opengles.GL;

		@@ -574,22 +579,46 @@ class GLES20Canvas extends Canvas {

		@Override
		public void drawText(char[] text, int index, int count, float x, float y, Paint paint) {
		// TODO: Implement
		if ((index \| count \| (index + count) \| (text.length - index - count)) < 0) {
		throw new IndexOutOfBoundsException();
		}
		nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint);
		}

		private native void nDrawText(int renderer, char[] text, int index, int count, float x, float y,
		int bidiFlags, int paint);

		@Override
		public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) {
		// TODO: Implement
		if (text instanceof String \|\| text instanceof SpannedString \|\|
		text instanceof SpannableString) {
		nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags,
		paint.mNativePaint);
		} else if (text instanceof GraphicsOperations) {
		((GraphicsOperations) text).drawText(this, start, end, x, y,
		paint);
		} else {
		char[] buf = TemporaryBuffer.obtain(end - start);
		TextUtils.getChars(text, start, end, buf, 0);
		nDrawText(mRenderer, buf, 0, end - start, x, y, paint.mBidiFlags, paint.mNativePaint);
		TemporaryBuffer.recycle(buf);
		}
		}

		@Override
		public void drawText(String text, int start, int end, float x, float y, Paint paint) {
		// TODO: Implement
		if ((start \| end \| (end - start) \| (text.length() - end)) < 0) {
		throw new IndexOutOfBoundsException();
		}
		nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint);
		}

		private native void nDrawText(int renderer, String text, int start, int end, float x, float y,
		int bidiFlags, int paint);

		@Override
		public void drawText(String text, float x, float y, Paint paint) {
		drawText(text, 0, text.length(), x, y, paint);
		nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, paint.mNativePaint);
		}

		@Override

core/jni/android/graphics/Typeface.cpp

+7 −1

Original line number	Diff line number	Diff line
		@@ -130,7 +130,13 @@ static SkTypeface* Typeface_createFromAsset(JNIEnv* env, jobject,
		return NULL;
		}

		return SkTypeface::CreateFromStream(new AssetStream(asset, true));
		SkStream* stream = new AssetStream(asset, true);
		SkTypeface* face = SkTypeface::CreateFromStream(stream);
		// SkTypeFace::CreateFromStream calls ref() on the stream, so we
		// need to unref it here or it won't be freed later on
		stream->unref();

		return face;
		}

		static SkTypeface* Typeface_createFromFile(JNIEnv* env, jobject, jstring jpath) {

core/jni/android_view_GLES20Canvas.cpp

+27 −1

Original line number	Diff line number	Diff line
		@@ -14,6 +14,8 @@
		* limitations under the License.
		*/

		#define LOG_TAG "OpenGLRenderer"

		#include "jni.h"
		#include <nativehelper/JNIHelp.h>
		#include <android_runtime/AndroidRuntime.h>
		@@ -24,6 +26,7 @@
		#include <SkMatrix.h>
		#include <SkPaint.h>
		#include <SkRegion.h>
		#include <SkScalerContext.h>
		#include <SkXfermode.h>

		#include <OpenGLRenderer.h>
		@@ -207,7 +210,6 @@ static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject canvas,

		renderer->drawPatch(bitmap, patch, left, top, right, bottom, paint);

		// TODO: make sure that 0 is correct for the flags
		env->ReleaseByteArrayElements(chunks, storage, 0);
		}

		@@ -245,6 +247,26 @@ static void android_view_GLES20Canvas_setupLinearShader(JNIEnv* env, jobject can
		tileMode, matrix, (shader->getFlags() & SkShader::kOpaqueAlpha_Flag) == 0);
		}

		// ----------------------------------------------------------------------------
		// Text
		// ----------------------------------------------------------------------------

		static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject canvas,
		OpenGLRenderer* renderer, jcharArray text, int index, int count,
		jfloat x, jfloat y, int flags, SkPaint* paint) {
		jchar* textArray = env->GetCharArrayElements(text, NULL);
		// TODO: draw from textArray + index
		env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
		}

		static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject canvas,
		OpenGLRenderer* renderer, jstring text, int start, int end,
		jfloat x, jfloat y, int flags, SkPaint* paint) {
		const jchar* textArray = env->GetStringChars(text, NULL);
		// TODO: draw from textArray + start
		env->ReleaseStringChars(text, textArray);
		}

		// ----------------------------------------------------------------------------
		// JNI Glue
		// ----------------------------------------------------------------------------
		@@ -288,6 +310,10 @@ static JNINativeMethod gMethods[] = {
		{ "nSetupBitmapShader", "(IIIIII)V", (void*) android_view_GLES20Canvas_setupBitmapShader },
		{ "nSetupLinearShader", "(IIIIIIII)V", (void*) android_view_GLES20Canvas_setupLinearShader },

		{ "nDrawText", "(I[CIIFFII)V", (void*) android_view_GLES20Canvas_drawTextArray },
		{ "nDrawText", "(ILjava/lang/String;IIFFII)V",
		(void*) android_view_GLES20Canvas_drawText },

		{ "nGetClipBounds", "(ILandroid/graphics/Rect;)Z",
		(void*) android_view_GLES20Canvas_getClipBounds },
		};

core/jni/android_view_HardwareRenderer.cpp

+2 −4

Original line number	Diff line number	Diff line
		@@ -34,13 +34,11 @@ static void android_view_HardwareRenderer_abandonGlCaches(JNIEnv* env, jobject)
		const char* const kClassPathName = "android/view/HardwareRenderer";

		static JNINativeMethod gMethods[] = {
		{ "nativeAbandonGlCaches", "()V",
		(void*)android_view_HardwareRenderer_abandonGlCaches },
		{ "nativeAbandonGlCaches", "()V", (void*)android_view_HardwareRenderer_abandonGlCaches },
		};

		int register_android_view_HardwareRenderer(JNIEnv* env) {
		return AndroidRuntime::registerNativeMethods(env,
		kClassPathName, gMethods, NELEM(gMethods));
		return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
		}

		};

graphics/java/android/graphics/Paint.java

+4 −1

Original line number	Diff line number	Diff line
		@@ -43,7 +43,10 @@ public class Paint {
		private boolean mHasCompatScaling;
		private float mCompatScaling;
		private float mInvCompatScaling;
		/* package */ int mBidiFlags = BIDI_DEFAULT_LTR;
		/**
		* @hide
		*/
		public int mBidiFlags = BIDI_DEFAULT_LTR;

		private static final Style[] sStyleArray = {
		Style.FILL, Style.STROKE, Style.FILL_AND_STROKE