More infrastructure for Canvas.drawTextOnPath (03d58520) · Commits · e / os / android_frameworks_base

libs/hwui/OpenGLRenderer.cpp

+67 −1

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@
		#include <sys/types.h>

		#include <SkCanvas.h>
		#include <SkPathMeasure.h>
		#include <SkTypeface.h>

		#include <utils/Log.h>
		@@ -2294,7 +2295,72 @@ void OpenGLRenderer::drawText(const char* text, int bytesCount, int count,

		void OpenGLRenderer::drawTextOnPath(const char* text, int bytesCount, int count, SkPath* path,
		float hOffset, float vOffset, SkPaint* paint) {
		// TODO: Implement
		if (text == NULL \|\| count == 0 \|\| mSnapshot->isIgnored() \|\|
		(paint->getAlpha() == 0 && paint->getXfermode() == NULL)) {
		return;
		}

		float x = 0.0f;
		float y = 0.0f;

		const bool pureTranslate = mSnapshot->transform->isPureTranslate();
		if (CC_LIKELY(pureTranslate)) {
		x = (int) floorf(x + mSnapshot->transform->getTranslateX() + 0.5f);
		y = (int) floorf(y + mSnapshot->transform->getTranslateY() + 0.5f);
		}

		FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint);
		fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()),
		paint->getTextSize());

		int alpha;
		SkXfermode::Mode mode;
		getAlphaAndMode(paint, &alpha, &mode);

		mCaches.activeTexture(0);
		setupDraw();
		setupDrawDirtyRegionsDisabled();
		setupDrawWithTexture(true);
		setupDrawAlpha8Color(paint->getColor(), alpha);
		setupDrawColorFilter();
		setupDrawShader();
		setupDrawBlending(true, mode);
		setupDrawProgram();
		setupDrawModelView(x, y, x, y, pureTranslate, true);
		setupDrawTexture(fontRenderer.getTexture(true));
		setupDrawPureColorUniforms();
		setupDrawColorFilterUniforms();
		setupDrawShaderUniforms(pureTranslate);

		// mat4 pathTransform;
		// pathTransform.loadTranslate(hOffset, vOffset, 0.0f);
		//
		// float offset = 0.0f;
		// SkPathMeasure pathMeasure(*path, false);
		//
		// if (paint->getTextAlign() != SkPaint::kLeft_Align) {
		// SkScalar pathLength = pathMeasure.getLength();
		// if (paint->getTextAlign() == SkPaint::kCenter_Align) {
		// pathLength = SkScalarHalf(pathLength);
		// }
		// offset += SkScalarToFloat(pathLength);
		// }

		// SkScalar x;
		// SkPath tmp;
		// SkMatrix m(scaledMatrix);
		//
		// m.postTranslate(xpos + hOffset, 0);
		// if (matrix) {
		// m.postConcat(*matrix);
		// }
		// morphpath(&tmp, *iterPath, meas, m);
		// if (fDevice) {
		// fDevice->drawPath(*this, tmp, iter.getPaint(), NULL, true);
		// } else {
		// this->drawPath(tmp, iter.getPaint(), NULL, true);
		// }
		// }
		}

		void OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) {

tests/HwAccelerationTest/src/com/android/test/hwui/TextOnPathActivity.java

+19 −3

Original line number	Diff line number	Diff line
		@@ -64,8 +64,8 @@ public class TextOnPathActivity extends Activity {
		mPaint.setAntiAlias(true);
		mPaint.setColor(0xff000000);

		StringBuilder builder = new StringBuilder(TEST_STRING.length() * 5);
		for (int i = 0; i < 5; i++) {
		StringBuilder builder = new StringBuilder(TEST_STRING.length() * 2);
		for (int i = 0; i < 2; i++) {
		builder.append(TEST_STRING);
		}
		mText = builder.toString();
		@@ -77,8 +77,24 @@ public class TextOnPathActivity extends Activity {

		canvas.drawARGB(255, 255, 255, 255);

		canvas.translate(550.0f, 60.0f);
		canvas.save();
		canvas.translate(400.0f, 350.0f);
		mPaint.setTextAlign(Paint.Align.LEFT);
		canvas.drawTextOnPath(mText + mText, mPath, 0.0f, 0.0f, mPaint);
		canvas.restore();

		canvas.save();
		canvas.translate(150.0f, 60.0f);
		canvas.drawTextOnPath(mText, mPath, 0.0f, 0.0f, mPaint);

		canvas.translate(250.0f, 0.0f);
		mPaint.setTextAlign(Paint.Align.CENTER);
		canvas.drawTextOnPath(mText, mPath, 0.0f, 0.0f, mPaint);

		canvas.translate(250.0f, 0.0f);
		mPaint.setTextAlign(Paint.Align.RIGHT);
		canvas.drawTextOnPath(mText, mPath, 0.0f, 0.0f, mPaint);
		canvas.restore();
		}
		}
		}