| /* libs/android_runtime/android/graphics/Paint.cpp |
| ** |
| ** Copyright 2006, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| #define LOG_TAG "Paint" |
| |
| #include <utils/Log.h> |
| |
| #include "jni.h" |
| #include "GraphicsJNI.h" |
| #include <android_runtime/AndroidRuntime.h> |
| #include <ScopedUtfChars.h> |
| |
| #include "SkBlurDrawLooper.h" |
| #include "SkColorFilter.h" |
| #include "SkMaskFilter.h" |
| #include "SkRasterizer.h" |
| #include "SkShader.h" |
| #include "SkTypeface.h" |
| #include "SkXfermode.h" |
| #include "unicode/uloc.h" |
| #include "unicode/ushape.h" |
| #include "TextLayout.h" |
| |
| // temporary for debugging |
| #include <Caches.h> |
| #include <utils/Log.h> |
| |
| namespace android { |
| |
| struct JMetricsID { |
| jfieldID top; |
| jfieldID ascent; |
| jfieldID descent; |
| jfieldID bottom; |
| jfieldID leading; |
| }; |
| |
| static jclass gFontMetrics_class; |
| static JMetricsID gFontMetrics_fieldID; |
| |
| static jclass gFontMetricsInt_class; |
| static JMetricsID gFontMetricsInt_fieldID; |
| |
| static void defaultSettingsForAndroid(SkPaint* paint) { |
| // GlyphID encoding is required because we are using Harfbuzz shaping |
| paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| |
| SkPaintOptionsAndroid paintOpts = paint->getPaintOptionsAndroid(); |
| paintOpts.setUseFontFallbacks(true); |
| paint->setPaintOptionsAndroid(paintOpts); |
| } |
| |
| class SkPaintGlue { |
| public: |
| enum MoveOpt { |
| AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT |
| }; |
| |
| static void finalizer(JNIEnv* env, jobject clazz, SkPaint* obj) { |
| delete obj; |
| } |
| |
| static SkPaint* init(JNIEnv* env, jobject clazz) { |
| SkPaint* obj = new SkPaint(); |
| defaultSettingsForAndroid(obj); |
| return obj; |
| } |
| |
| static SkPaint* intiWithPaint(JNIEnv* env, jobject clazz, SkPaint* paint) { |
| SkPaint* obj = new SkPaint(*paint); |
| return obj; |
| } |
| |
| static void reset(JNIEnv* env, jobject clazz, SkPaint* obj) { |
| obj->reset(); |
| defaultSettingsForAndroid(obj); |
| } |
| |
| static void assign(JNIEnv* env, jobject clazz, SkPaint* dst, const SkPaint* src) { |
| *dst = *src; |
| } |
| |
| static jint getFlags(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return GraphicsJNI::getNativePaint(env, paint)->getFlags(); |
| } |
| |
| static void setFlags(JNIEnv* env, jobject paint, jint flags) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setFlags(flags); |
| } |
| |
| static jint getHinting(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return GraphicsJNI::getNativePaint(env, paint)->getHinting() |
| == SkPaint::kNo_Hinting ? 0 : 1; |
| } |
| |
| static void setHinting(JNIEnv* env, jobject paint, jint mode) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setHinting( |
| mode == 0 ? SkPaint::kNo_Hinting : SkPaint::kNormal_Hinting); |
| } |
| |
| static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setAntiAlias(aa); |
| } |
| |
| static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setLinearText(linearText); |
| } |
| |
| static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setSubpixelText(subpixelText); |
| } |
| |
| static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setUnderlineText(underlineText); |
| } |
| |
| static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setStrikeThruText(strikeThruText); |
| } |
| |
| static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setFakeBoldText(fakeBoldText); |
| } |
| |
| static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setFilterBitmap(filterBitmap); |
| } |
| |
| static void setDither(JNIEnv* env, jobject paint, jboolean dither) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setDither(dither); |
| } |
| |
| static jint getStyle(JNIEnv* env, jobject clazz, SkPaint* obj) { |
| return obj->getStyle(); |
| } |
| |
| static void setStyle(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Style style) { |
| obj->setStyle(style); |
| } |
| |
| static jint getColor(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return GraphicsJNI::getNativePaint(env, paint)->getColor(); |
| } |
| |
| static jint getAlpha(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return GraphicsJNI::getNativePaint(env, paint)->getAlpha(); |
| } |
| |
| static void setColor(JNIEnv* env, jobject paint, jint color) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setColor(color); |
| } |
| |
| static void setAlpha(JNIEnv* env, jobject paint, jint a) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setAlpha(a); |
| } |
| |
| static jfloat getStrokeWidth(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeWidth()); |
| } |
| |
| static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setStrokeWidth(SkFloatToScalar(width)); |
| } |
| |
| static jfloat getStrokeMiter(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeMiter()); |
| } |
| |
| static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setStrokeMiter(SkFloatToScalar(miter)); |
| } |
| |
| static jint getStrokeCap(JNIEnv* env, jobject clazz, SkPaint* obj) { |
| return obj->getStrokeCap(); |
| } |
| |
| static void setStrokeCap(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Cap cap) { |
| obj->setStrokeCap(cap); |
| } |
| |
| static jint getStrokeJoin(JNIEnv* env, jobject clazz, SkPaint* obj) { |
| return obj->getStrokeJoin(); |
| } |
| |
| static void setStrokeJoin(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Join join) { |
| obj->setStrokeJoin(join); |
| } |
| |
| static jboolean getFillPath(JNIEnv* env, jobject clazz, SkPaint* obj, SkPath* src, SkPath* dst) { |
| return obj->getFillPath(*src, dst); |
| } |
| |
| static SkShader* setShader(JNIEnv* env, jobject clazz, SkPaint* obj, SkShader* shader) { |
| return obj->setShader(shader); |
| } |
| |
| static SkColorFilter* setColorFilter(JNIEnv* env, jobject clazz, SkPaint* obj, SkColorFilter* filter) { |
| return obj->setColorFilter(filter); |
| } |
| |
| static SkXfermode* setXfermode(JNIEnv* env, jobject clazz, SkPaint* obj, SkXfermode* xfermode) { |
| return obj->setXfermode(xfermode); |
| } |
| |
| static SkPathEffect* setPathEffect(JNIEnv* env, jobject clazz, SkPaint* obj, SkPathEffect* effect) { |
| return obj->setPathEffect(effect); |
| } |
| |
| static SkMaskFilter* setMaskFilter(JNIEnv* env, jobject clazz, SkPaint* obj, SkMaskFilter* maskfilter) { |
| return obj->setMaskFilter(maskfilter); |
| } |
| |
| static SkTypeface* setTypeface(JNIEnv* env, jobject clazz, SkPaint* obj, SkTypeface* typeface) { |
| return obj->setTypeface(typeface); |
| } |
| |
| static SkRasterizer* setRasterizer(JNIEnv* env, jobject clazz, SkPaint* obj, SkRasterizer* rasterizer) { |
| return obj->setRasterizer(rasterizer); |
| } |
| |
| static jint getTextAlign(JNIEnv* env, jobject clazz, SkPaint* obj) { |
| return obj->getTextAlign(); |
| } |
| |
| static void setTextAlign(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Align align) { |
| obj->setTextAlign(align); |
| } |
| |
| // generate bcp47 identifier for the supplied locale |
| static void toLanguageTag(char* output, size_t outSize, |
| const char* locale) { |
| if (output == NULL || outSize <= 0) { |
| return; |
| } |
| if (locale == NULL) { |
| output[0] = '\0'; |
| return; |
| } |
| char canonicalChars[ULOC_FULLNAME_CAPACITY]; |
| UErrorCode uErr = U_ZERO_ERROR; |
| uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY, |
| &uErr); |
| if (U_SUCCESS(uErr)) { |
| char likelyChars[ULOC_FULLNAME_CAPACITY]; |
| uErr = U_ZERO_ERROR; |
| uloc_addLikelySubtags(canonicalChars, likelyChars, |
| ULOC_FULLNAME_CAPACITY, &uErr); |
| if (U_SUCCESS(uErr)) { |
| uErr = U_ZERO_ERROR; |
| uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr); |
| if (U_SUCCESS(uErr)) { |
| return; |
| } else { |
| ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars, |
| u_errorName(uErr)); |
| } |
| } else { |
| ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s", |
| canonicalChars, u_errorName(uErr)); |
| } |
| } else { |
| ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale, |
| u_errorName(uErr)); |
| } |
| // unable to build a proper language identifier |
| output[0] = '\0'; |
| } |
| |
| static void setTextLocale(JNIEnv* env, jobject clazz, SkPaint* obj, jstring locale) { |
| ScopedUtfChars localeChars(env, locale); |
| char langTag[ULOC_FULLNAME_CAPACITY]; |
| toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str()); |
| |
| SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid(); |
| paintOpts.setLanguage(langTag); |
| obj->setPaintOptionsAndroid(paintOpts); |
| } |
| |
| static jfloat getTextSize(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSize()); |
| } |
| |
| static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setTextSize(SkFloatToScalar(textSize)); |
| } |
| |
| static jfloat getTextScaleX(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextScaleX()); |
| } |
| |
| static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setTextScaleX(SkFloatToScalar(scaleX)); |
| } |
| |
| static jfloat getTextSkewX(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSkewX()); |
| } |
| |
| static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) { |
| NPE_CHECK_RETURN_VOID(env, paint); |
| GraphicsJNI::getNativePaint(env, paint)->setTextSkewX(SkFloatToScalar(skewX)); |
| } |
| |
| static jfloat ascent(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| SkPaint::FontMetrics metrics; |
| (void)GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics); |
| return SkScalarToFloat(metrics.fAscent); |
| } |
| |
| static jfloat descent(JNIEnv* env, jobject paint) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| SkPaint::FontMetrics metrics; |
| (void)GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics); |
| return SkScalarToFloat(metrics.fDescent); |
| } |
| |
| static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| SkPaint::FontMetrics metrics; |
| SkScalar spacing = GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics); |
| |
| if (metricsObj) { |
| SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class)); |
| env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop)); |
| env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent)); |
| env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent)); |
| env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom)); |
| env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading)); |
| } |
| return SkScalarToFloat(spacing); |
| } |
| |
| static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| SkPaint::FontMetrics metrics; |
| |
| GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics); |
| int ascent = SkScalarRound(metrics.fAscent); |
| int descent = SkScalarRound(metrics.fDescent); |
| int leading = SkScalarRound(metrics.fLeading); |
| |
| if (metricsObj) { |
| SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class)); |
| env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloor(metrics.fTop)); |
| env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent); |
| env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent); |
| env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeil(metrics.fBottom)); |
| env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading); |
| } |
| return descent - ascent + leading; |
| } |
| |
| static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, int index, int count, |
| jint bidiFlags) { |
| NPE_CHECK_RETURN_ZERO(env, jpaint); |
| NPE_CHECK_RETURN_ZERO(env, text); |
| |
| size_t textLength = env->GetArrayLength(text); |
| if ((index | count) < 0 || (size_t)(index + count) > textLength) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| if (count == 0) { |
| return 0; |
| } |
| |
| SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); |
| const jchar* textArray = env->GetCharArrayElements(text, NULL); |
| jfloat result = 0; |
| |
| TextLayout::getTextRunAdvances(paint, textArray, index, count, textLength, |
| bidiFlags, NULL /* dont need all advances */, &result); |
| |
| env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT); |
| return result; |
| } |
| |
| static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, int start, int end, |
| jint bidiFlags) { |
| NPE_CHECK_RETURN_ZERO(env, jpaint); |
| NPE_CHECK_RETURN_ZERO(env, text); |
| |
| size_t textLength = env->GetStringLength(text); |
| int count = end - start; |
| if ((start | count) < 0 || (size_t)end > textLength) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| if (count == 0) { |
| return 0; |
| } |
| |
| const jchar* textArray = env->GetStringChars(text, NULL); |
| SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); |
| jfloat width = 0; |
| |
| TextLayout::getTextRunAdvances(paint, textArray, start, count, textLength, |
| bidiFlags, NULL /* dont need all advances */, &width); |
| |
| env->ReleaseStringChars(text, textArray); |
| return width; |
| } |
| |
| static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) { |
| NPE_CHECK_RETURN_ZERO(env, jpaint); |
| NPE_CHECK_RETURN_ZERO(env, text); |
| |
| size_t textLength = env->GetStringLength(text); |
| if (textLength == 0) { |
| return 0; |
| } |
| |
| const jchar* textArray = env->GetStringChars(text, NULL); |
| SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); |
| jfloat width = 0; |
| |
| TextLayout::getTextRunAdvances(paint, textArray, 0, textLength, textLength, |
| bidiFlags, NULL /* dont need all advances */, &width); |
| |
| env->ReleaseStringChars(text, textArray); |
| return width; |
| } |
| |
| static int dotextwidths(JNIEnv* env, SkPaint* paint, const jchar text[], int count, jfloatArray widths, |
| jint bidiFlags) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| NPE_CHECK_RETURN_ZERO(env, text); |
| |
| if (count < 0 || !widths) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| if (count == 0) { |
| return 0; |
| } |
| size_t widthsLength = env->GetArrayLength(widths); |
| if ((size_t)count > widthsLength) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| |
| AutoJavaFloatArray autoWidths(env, widths, count); |
| jfloat* widthsArray = autoWidths.ptr(); |
| |
| TextLayout::getTextRunAdvances(paint, text, 0, count, count, |
| bidiFlags, widthsArray, NULL /* dont need totalAdvance */); |
| |
| return count; |
| } |
| |
| static int getTextWidths___CIII_F(JNIEnv* env, jobject clazz, SkPaint* paint, jcharArray text, |
| int index, int count, jint bidiFlags, jfloatArray widths) { |
| const jchar* textArray = env->GetCharArrayElements(text, NULL); |
| count = dotextwidths(env, paint, textArray + index, count, widths, bidiFlags); |
| env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), |
| JNI_ABORT); |
| return count; |
| } |
| |
| static int getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, SkPaint* paint, jstring text, |
| int start, int end, jint bidiFlags, jfloatArray widths) { |
| const jchar* textArray = env->GetStringChars(text, NULL); |
| int count = dotextwidths(env, paint, textArray + start, end - start, widths, bidiFlags); |
| env->ReleaseStringChars(text, textArray); |
| return count; |
| } |
| |
| static int doTextGlyphs(JNIEnv* env, SkPaint* paint, const jchar* text, jint start, jint count, |
| jint contextCount, jint flags, jcharArray glyphs) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| NPE_CHECK_RETURN_ZERO(env, text); |
| |
| if ((start | count | contextCount) < 0 || contextCount < count || !glyphs) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| if (count == 0) { |
| return 0; |
| } |
| size_t glypthsLength = env->GetArrayLength(glyphs); |
| if ((size_t)count > glypthsLength) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| |
| jchar* glyphsArray = env->GetCharArrayElements(glyphs, NULL); |
| |
| sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint, |
| text, start, count, contextCount, flags); |
| const jchar* shapedGlyphs = value->getGlyphs(); |
| size_t glyphsCount = value->getGlyphsCount(); |
| memcpy(glyphsArray, shapedGlyphs, sizeof(jchar) * glyphsCount); |
| |
| env->ReleaseCharArrayElements(glyphs, glyphsArray, JNI_ABORT); |
| return glyphsCount; |
| } |
| |
| static int getTextGlyphs__StringIIIII_C(JNIEnv* env, jobject clazz, SkPaint* paint, |
| jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags, |
| jcharArray glyphs) { |
| const jchar* textArray = env->GetStringChars(text, NULL); |
| int count = doTextGlyphs(env, paint, textArray + contextStart, start - contextStart, |
| end - start, contextEnd - contextStart, flags, glyphs); |
| env->ReleaseStringChars(text, textArray); |
| return count; |
| } |
| |
| static jfloat doTextRunAdvances(JNIEnv *env, SkPaint *paint, const jchar *text, |
| jint start, jint count, jint contextCount, jint flags, |
| jfloatArray advances, jint advancesIndex) { |
| NPE_CHECK_RETURN_ZERO(env, paint); |
| NPE_CHECK_RETURN_ZERO(env, text); |
| |
| if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| if (count == 0) { |
| return 0; |
| } |
| if (advances) { |
| size_t advancesLength = env->GetArrayLength(advances); |
| if ((size_t)count > advancesLength) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| } |
| jfloat advancesArray[count]; |
| jfloat totalAdvance = 0; |
| |
| TextLayout::getTextRunAdvances(paint, text, start, count, contextCount, flags, |
| advancesArray, &totalAdvance); |
| |
| if (advances != NULL) { |
| env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray); |
| } |
| return totalAdvance; |
| } |
| |
| static float getTextRunAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, SkPaint* paint, |
| jcharArray text, jint index, jint count, jint contextIndex, jint contextCount, |
| jint flags, jfloatArray advances, jint advancesIndex) { |
| jchar* textArray = env->GetCharArrayElements(text, NULL); |
| jfloat result = doTextRunAdvances(env, paint, textArray + contextIndex, |
| index - contextIndex, count, contextCount, flags, advances, advancesIndex); |
| env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); |
| return result; |
| } |
| |
| static float getTextRunAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, SkPaint* paint, |
| jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags, |
| jfloatArray advances, jint advancesIndex) { |
| const jchar* textArray = env->GetStringChars(text, NULL); |
| jfloat result = doTextRunAdvances(env, paint, textArray + contextStart, |
| start - contextStart, end - start, contextEnd - contextStart, flags, |
| advances, advancesIndex); |
| env->ReleaseStringChars(text, textArray); |
| return result; |
| } |
| |
| static jint doTextRunCursor(JNIEnv *env, SkPaint* paint, const jchar *text, jint start, |
| jint count, jint flags, jint offset, jint opt) { |
| jfloat scalarArray[count]; |
| |
| TextLayout::getTextRunAdvances(paint, text, start, count, start + count, flags, |
| scalarArray, NULL /* dont need totalAdvance */); |
| |
| jint pos = offset - start; |
| switch (opt) { |
| case AFTER: |
| if (pos < count) { |
| pos += 1; |
| } |
| // fall through |
| case AT_OR_AFTER: |
| while (pos < count && scalarArray[pos] == 0) { |
| ++pos; |
| } |
| break; |
| case BEFORE: |
| if (pos > 0) { |
| --pos; |
| } |
| // fall through |
| case AT_OR_BEFORE: |
| while (pos > 0 && scalarArray[pos] == 0) { |
| --pos; |
| } |
| break; |
| case AT: |
| default: |
| if (scalarArray[pos] == 0) { |
| pos = -1; |
| } |
| break; |
| } |
| |
| if (pos != -1) { |
| pos += start; |
| } |
| |
| return pos; |
| } |
| |
| static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, SkPaint* paint, jcharArray text, |
| jint contextStart, jint contextCount, jint flags, jint offset, jint cursorOpt) { |
| jchar* textArray = env->GetCharArrayElements(text, NULL); |
| jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, flags, |
| offset, cursorOpt); |
| env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); |
| return result; |
| } |
| |
| static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, SkPaint* paint, jstring text, |
| jint contextStart, jint contextEnd, jint flags, jint offset, jint cursorOpt) { |
| const jchar* textArray = env->GetStringChars(text, NULL); |
| jint result = doTextRunCursor(env, paint, textArray, contextStart, |
| contextEnd - contextStart, flags, offset, cursorOpt); |
| env->ReleaseStringChars(text, textArray); |
| return result; |
| } |
| |
| static void getTextPath(JNIEnv* env, SkPaint* paint, const jchar* text, jint count, |
| jint bidiFlags, jfloat x, jfloat y, SkPath *path) { |
| TextLayout::getTextPath(paint, text, count, bidiFlags, x, y, path); |
| } |
| |
| static void getTextPath___C(JNIEnv* env, jobject clazz, SkPaint* paint, jint bidiFlags, |
| jcharArray text, int index, int count, jfloat x, jfloat y, SkPath* path) { |
| const jchar* textArray = env->GetCharArrayElements(text, NULL); |
| getTextPath(env, paint, textArray + index, count, bidiFlags, x, y, path); |
| env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT); |
| } |
| |
| static void getTextPath__String(JNIEnv* env, jobject clazz, SkPaint* paint, jint bidiFlags, |
| jstring text, int start, int end, jfloat x, jfloat y, SkPath* path) { |
| const jchar* textArray = env->GetStringChars(text, NULL); |
| getTextPath(env, paint, textArray + start, end - start, bidiFlags, x, y, path); |
| env->ReleaseStringChars(text, textArray); |
| } |
| |
| static void setShadowLayer(JNIEnv* env, jobject jpaint, jfloat radius, |
| jfloat dx, jfloat dy, int color) { |
| NPE_CHECK_RETURN_VOID(env, jpaint); |
| |
| SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); |
| if (radius <= 0) { |
| paint->setLooper(NULL); |
| } |
| else { |
| paint->setLooper(new SkBlurDrawLooper(SkFloatToScalar(radius), |
| SkFloatToScalar(dx), |
| SkFloatToScalar(dy), |
| (SkColor)color))->unref(); |
| } |
| } |
| |
| static int breakText(JNIEnv* env, SkPaint& paint, const jchar text[], |
| int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured, |
| SkPaint::TextBufferDirection tbd) { |
| sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint, |
| text, 0, count, count, bidiFlags); |
| if (value == NULL) { |
| return 0; |
| } |
| SkScalar measured; |
| size_t bytes = paint.breakText(value->getGlyphs(), value->getGlyphsCount() << 1, |
| SkFloatToScalar(maxWidth), &measured, tbd); |
| SkASSERT((bytes & 1) == 0); |
| |
| if (jmeasured && env->GetArrayLength(jmeasured) > 0) { |
| AutoJavaFloatArray autoMeasured(env, jmeasured, 1); |
| jfloat* array = autoMeasured.ptr(); |
| array[0] = SkScalarToFloat(measured); |
| } |
| return bytes >> 1; |
| } |
| |
| static int breakTextC(JNIEnv* env, jobject jpaint, jcharArray jtext, |
| int index, int count, float maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) { |
| NPE_CHECK_RETURN_ZERO(env, jpaint); |
| NPE_CHECK_RETURN_ZERO(env, jtext); |
| |
| SkPaint::TextBufferDirection tbd; |
| if (count < 0) { |
| tbd = SkPaint::kBackward_TextBufferDirection; |
| count = -count; |
| } |
| else { |
| tbd = SkPaint::kForward_TextBufferDirection; |
| } |
| |
| if ((index < 0) || (index + count > env->GetArrayLength(jtext))) { |
| doThrowAIOOBE(env); |
| return 0; |
| } |
| |
| SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); |
| const jchar* text = env->GetCharArrayElements(jtext, NULL); |
| count = breakText(env, *paint, text + index, count, maxWidth, |
| bidiFlags, jmeasuredWidth, tbd); |
| env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text), |
| JNI_ABORT); |
| return count; |
| } |
| |
| static int breakTextS(JNIEnv* env, jobject jpaint, jstring jtext, |
| bool forwards, float maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) { |
| NPE_CHECK_RETURN_ZERO(env, jpaint); |
| NPE_CHECK_RETURN_ZERO(env, jtext); |
| |
| SkPaint::TextBufferDirection tbd = forwards ? |
| SkPaint::kForward_TextBufferDirection : |
| SkPaint::kBackward_TextBufferDirection; |
| |
| SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); |
| int count = env->GetStringLength(jtext); |
| const jchar* text = env->GetStringChars(jtext, NULL); |
| count = breakText(env, *paint, text, count, maxWidth, bidiFlags, jmeasuredWidth, tbd); |
| env->ReleaseStringChars(jtext, text); |
| return count; |
| } |
| |
| static void doTextBounds(JNIEnv* env, const jchar* text, int count, |
| jobject bounds, const SkPaint& paint, jint bidiFlags) { |
| SkRect r; |
| SkIRect ir; |
| |
| sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint, |
| text, 0, count, count, bidiFlags); |
| if (value == NULL) { |
| return; |
| } |
| paint.measureText(value->getGlyphs(), value->getGlyphsCount() << 1, &r); |
| r.roundOut(&ir); |
| GraphicsJNI::irect_to_jrect(ir, env, bounds); |
| } |
| |
| static void getStringBounds(JNIEnv* env, jobject, const SkPaint* paint, |
| jstring text, int start, int end, jint bidiFlags, jobject bounds) { |
| const jchar* textArray = env->GetStringChars(text, NULL); |
| doTextBounds(env, textArray + start, end - start, bounds, *paint, bidiFlags); |
| env->ReleaseStringChars(text, textArray); |
| } |
| |
| static void getCharArrayBounds(JNIEnv* env, jobject, const SkPaint* paint, |
| jcharArray text, int index, int count, jint bidiFlags, jobject bounds) { |
| const jchar* textArray = env->GetCharArrayElements(text, NULL); |
| doTextBounds(env, textArray + index, count, bounds, *paint, bidiFlags); |
| env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), |
| JNI_ABORT); |
| } |
| |
| }; |
| |
| static JNINativeMethod methods[] = { |
| {"finalizer", "(I)V", (void*) SkPaintGlue::finalizer}, |
| {"native_init","()I", (void*) SkPaintGlue::init}, |
| {"native_initWithPaint","(I)I", (void*) SkPaintGlue::intiWithPaint}, |
| {"native_reset","(I)V", (void*) SkPaintGlue::reset}, |
| {"native_set","(II)V", (void*) SkPaintGlue::assign}, |
| {"getFlags","()I", (void*) SkPaintGlue::getFlags}, |
| {"setFlags","(I)V", (void*) SkPaintGlue::setFlags}, |
| {"getHinting","()I", (void*) SkPaintGlue::getHinting}, |
| {"setHinting","(I)V", (void*) SkPaintGlue::setHinting}, |
| {"setAntiAlias","(Z)V", (void*) SkPaintGlue::setAntiAlias}, |
| {"setSubpixelText","(Z)V", (void*) SkPaintGlue::setSubpixelText}, |
| {"setLinearText","(Z)V", (void*) SkPaintGlue::setLinearText}, |
| {"setUnderlineText","(Z)V", (void*) SkPaintGlue::setUnderlineText}, |
| {"setStrikeThruText","(Z)V", (void*) SkPaintGlue::setStrikeThruText}, |
| {"setFakeBoldText","(Z)V", (void*) SkPaintGlue::setFakeBoldText}, |
| {"setFilterBitmap","(Z)V", (void*) SkPaintGlue::setFilterBitmap}, |
| {"setDither","(Z)V", (void*) SkPaintGlue::setDither}, |
| {"native_getStyle","(I)I", (void*) SkPaintGlue::getStyle}, |
| {"native_setStyle","(II)V", (void*) SkPaintGlue::setStyle}, |
| {"getColor","()I", (void*) SkPaintGlue::getColor}, |
| {"setColor","(I)V", (void*) SkPaintGlue::setColor}, |
| {"getAlpha","()I", (void*) SkPaintGlue::getAlpha}, |
| {"setAlpha","(I)V", (void*) SkPaintGlue::setAlpha}, |
| {"getStrokeWidth","()F", (void*) SkPaintGlue::getStrokeWidth}, |
| {"setStrokeWidth","(F)V", (void*) SkPaintGlue::setStrokeWidth}, |
| {"getStrokeMiter","()F", (void*) SkPaintGlue::getStrokeMiter}, |
| {"setStrokeMiter","(F)V", (void*) SkPaintGlue::setStrokeMiter}, |
| {"native_getStrokeCap","(I)I", (void*) SkPaintGlue::getStrokeCap}, |
| {"native_setStrokeCap","(II)V", (void*) SkPaintGlue::setStrokeCap}, |
| {"native_getStrokeJoin","(I)I", (void*) SkPaintGlue::getStrokeJoin}, |
| {"native_setStrokeJoin","(II)V", (void*) SkPaintGlue::setStrokeJoin}, |
| {"native_getFillPath","(III)Z", (void*) SkPaintGlue::getFillPath}, |
| {"native_setShader","(II)I", (void*) SkPaintGlue::setShader}, |
| {"native_setColorFilter","(II)I", (void*) SkPaintGlue::setColorFilter}, |
| {"native_setXfermode","(II)I", (void*) SkPaintGlue::setXfermode}, |
| {"native_setPathEffect","(II)I", (void*) SkPaintGlue::setPathEffect}, |
| {"native_setMaskFilter","(II)I", (void*) SkPaintGlue::setMaskFilter}, |
| {"native_setTypeface","(II)I", (void*) SkPaintGlue::setTypeface}, |
| {"native_setRasterizer","(II)I", (void*) SkPaintGlue::setRasterizer}, |
| {"native_getTextAlign","(I)I", (void*) SkPaintGlue::getTextAlign}, |
| {"native_setTextAlign","(II)V", (void*) SkPaintGlue::setTextAlign}, |
| {"native_setTextLocale","(ILjava/lang/String;)V", (void*) SkPaintGlue::setTextLocale}, |
| {"getTextSize","()F", (void*) SkPaintGlue::getTextSize}, |
| {"setTextSize","(F)V", (void*) SkPaintGlue::setTextSize}, |
| {"getTextScaleX","()F", (void*) SkPaintGlue::getTextScaleX}, |
| {"setTextScaleX","(F)V", (void*) SkPaintGlue::setTextScaleX}, |
| {"getTextSkewX","()F", (void*) SkPaintGlue::getTextSkewX}, |
| {"setTextSkewX","(F)V", (void*) SkPaintGlue::setTextSkewX}, |
| {"ascent","()F", (void*) SkPaintGlue::ascent}, |
| {"descent","()F", (void*) SkPaintGlue::descent}, |
| {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)SkPaintGlue::getFontMetrics}, |
| {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)SkPaintGlue::getFontMetricsInt}, |
| {"native_measureText","([CIII)F", (void*) SkPaintGlue::measureText_CIII}, |
| {"native_measureText","(Ljava/lang/String;I)F", (void*) SkPaintGlue::measureText_StringI}, |
| {"native_measureText","(Ljava/lang/String;III)F", (void*) SkPaintGlue::measureText_StringIII}, |
| {"native_breakText","([CIIFI[F)I", (void*) SkPaintGlue::breakTextC}, |
| {"native_breakText","(Ljava/lang/String;ZFI[F)I", (void*) SkPaintGlue::breakTextS}, |
| {"native_getTextWidths","(I[CIII[F)I", (void*) SkPaintGlue::getTextWidths___CIII_F}, |
| {"native_getTextWidths","(ILjava/lang/String;III[F)I", (void*) SkPaintGlue::getTextWidths__StringIII_F}, |
| {"native_getTextRunAdvances","(I[CIIIII[FI)F", |
| (void*) SkPaintGlue::getTextRunAdvances___CIIIII_FI}, |
| {"native_getTextRunAdvances","(ILjava/lang/String;IIIII[FI)F", |
| (void*) SkPaintGlue::getTextRunAdvances__StringIIIII_FI}, |
| |
| |
| {"native_getTextGlyphs","(ILjava/lang/String;IIIII[C)I", |
| (void*) SkPaintGlue::getTextGlyphs__StringIIIII_C}, |
| {"native_getTextRunCursor", "(I[CIIIII)I", (void*) SkPaintGlue::getTextRunCursor___C}, |
| {"native_getTextRunCursor", "(ILjava/lang/String;IIIII)I", |
| (void*) SkPaintGlue::getTextRunCursor__String}, |
| {"native_getTextPath","(II[CIIFFI)V", (void*) SkPaintGlue::getTextPath___C}, |
| {"native_getTextPath","(IILjava/lang/String;IIFFI)V", (void*) SkPaintGlue::getTextPath__String}, |
| {"nativeGetStringBounds", "(ILjava/lang/String;IIILandroid/graphics/Rect;)V", |
| (void*) SkPaintGlue::getStringBounds }, |
| {"nativeGetCharArrayBounds", "(I[CIIILandroid/graphics/Rect;)V", |
| (void*) SkPaintGlue::getCharArrayBounds }, |
| {"nSetShadowLayer", "(FFFI)V", (void*)SkPaintGlue::setShadowLayer} |
| }; |
| |
| static jfieldID req_fieldID(jfieldID id) { |
| SkASSERT(id); |
| return id; |
| } |
| |
| int register_android_graphics_Paint(JNIEnv* env) { |
| gFontMetrics_class = env->FindClass("android/graphics/Paint$FontMetrics"); |
| SkASSERT(gFontMetrics_class); |
| gFontMetrics_class = (jclass)env->NewGlobalRef(gFontMetrics_class); |
| |
| gFontMetrics_fieldID.top = req_fieldID(env->GetFieldID(gFontMetrics_class, "top", "F")); |
| gFontMetrics_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetrics_class, "ascent", "F")); |
| gFontMetrics_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetrics_class, "descent", "F")); |
| gFontMetrics_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetrics_class, "bottom", "F")); |
| gFontMetrics_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetrics_class, "leading", "F")); |
| |
| gFontMetricsInt_class = env->FindClass("android/graphics/Paint$FontMetricsInt"); |
| SkASSERT(gFontMetricsInt_class); |
| gFontMetricsInt_class = (jclass)env->NewGlobalRef(gFontMetricsInt_class); |
| |
| gFontMetricsInt_fieldID.top = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "top", "I")); |
| gFontMetricsInt_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "ascent", "I")); |
| gFontMetricsInt_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "descent", "I")); |
| gFontMetricsInt_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "bottom", "I")); |
| gFontMetricsInt_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "leading", "I")); |
| |
| int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Paint", methods, |
| sizeof(methods) / sizeof(methods[0])); |
| return result; |
| } |
| |
| } |
