| /* |
| * Copyright (C) 2014 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. |
| */ |
| |
| #include "jni.h" |
| #include "GraphicsJNI.h" |
| #include <android_runtime/AndroidRuntime.h> |
| |
| #include "Canvas.h" |
| #include "SkDrawFilter.h" |
| #include "SkGraphics.h" |
| #include "SkPorterDuff.h" |
| #include "Paint.h" |
| #include "TypefaceImpl.h" |
| |
| #include "MinikinUtils.h" |
| |
| namespace android { |
| |
| namespace CanvasJNI { |
| |
| static Canvas* get_canvas(jlong canvasHandle) { |
| return reinterpret_cast<Canvas*>(canvasHandle); |
| } |
| |
| static void finalizer(JNIEnv* env, jobject clazz, jlong canvasHandle) { |
| delete get_canvas(canvasHandle); |
| } |
| |
| // Native wrapper constructor used by Canvas(Bitmap) |
| static jlong initRaster(JNIEnv* env, jobject, jlong bitmapHandle) { |
| SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(bitmapHandle); |
| return reinterpret_cast<jlong>(Canvas::create_canvas(bitmap)); |
| } |
| |
| // Set the given bitmap as the new draw target (wrapped in a new SkCanvas), |
| // optionally copying canvas matrix & clip state. |
| static void setBitmap(JNIEnv* env, jobject, jlong canvasHandle, jlong bitmapHandle, |
| jboolean copyState) { |
| SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(bitmapHandle); |
| get_canvas(canvasHandle)->setBitmap(bitmap, copyState); |
| } |
| |
| static jboolean isOpaque(JNIEnv*, jobject, jlong canvasHandle) { |
| return get_canvas(canvasHandle)->isOpaque() ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jint getWidth(JNIEnv*, jobject, jlong canvasHandle) { |
| return static_cast<jint>(get_canvas(canvasHandle)->width()); |
| } |
| |
| static jint getHeight(JNIEnv*, jobject, jlong canvasHandle) { |
| return static_cast<jint>(get_canvas(canvasHandle)->height()); |
| } |
| |
| static jint getSaveCount(JNIEnv*, jobject, jlong canvasHandle) { |
| return static_cast<jint>(get_canvas(canvasHandle)->getSaveCount()); |
| } |
| |
| static jint save(JNIEnv*, jobject, jlong canvasHandle, jint flagsHandle) { |
| SkCanvas::SaveFlags flags = static_cast<SkCanvas::SaveFlags>(flagsHandle); |
| return static_cast<jint>(get_canvas(canvasHandle)->save(flags)); |
| } |
| |
| static jint saveLayer(JNIEnv* env, jobject, jlong canvasHandle, jfloat l, jfloat t, |
| jfloat r, jfloat b, jlong paintHandle, jint flagsHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| SkCanvas::SaveFlags flags = static_cast<SkCanvas::SaveFlags>(flagsHandle); |
| return static_cast<jint>(get_canvas(canvasHandle)->saveLayer(l, t, r, b, paint, flags)); |
| } |
| |
| static jint saveLayerAlpha(JNIEnv* env, jobject, jlong canvasHandle, jfloat l, jfloat t, |
| jfloat r, jfloat b, jint alpha, jint flagsHandle) { |
| SkCanvas::SaveFlags flags = static_cast<SkCanvas::SaveFlags>(flagsHandle); |
| return static_cast<jint>(get_canvas(canvasHandle)->saveLayerAlpha(l, t, r, b, alpha, flags)); |
| } |
| |
| static void restore(JNIEnv* env, jobject, jlong canvasHandle) { |
| Canvas* canvas = get_canvas(canvasHandle); |
| if (canvas->getSaveCount() <= 1) { // cannot restore anymore |
| doThrowISE(env, "Underflow in restore"); |
| return; |
| } |
| canvas->restore(); |
| } |
| |
| static void restoreToCount(JNIEnv* env, jobject, jlong canvasHandle, jint restoreCount) { |
| Canvas* canvas = get_canvas(canvasHandle); |
| if (restoreCount < 1 || restoreCount > canvas->getSaveCount()) { |
| doThrowIAE(env, "Underflow in restoreToCount"); |
| return; |
| } |
| canvas->restoreToCount(restoreCount); |
| } |
| |
| static void getCTM(JNIEnv* env, jobject, jlong canvasHandle, jlong matrixHandle) { |
| SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle); |
| get_canvas(canvasHandle)->getMatrix(matrix); |
| } |
| |
| static void setMatrix(JNIEnv* env, jobject, jlong canvasHandle, jlong matrixHandle) { |
| const SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle); |
| get_canvas(canvasHandle)->setMatrix(matrix ? *matrix : SkMatrix::I()); |
| } |
| |
| static void concat(JNIEnv* env, jobject, jlong canvasHandle, jlong matrixHandle) { |
| const SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle); |
| get_canvas(canvasHandle)->concat(*matrix); |
| } |
| |
| static void rotate(JNIEnv*, jobject, jlong canvasHandle, jfloat degrees) { |
| get_canvas(canvasHandle)->rotate(degrees); |
| } |
| |
| static void scale(JNIEnv*, jobject, jlong canvasHandle, jfloat sx, jfloat sy) { |
| get_canvas(canvasHandle)->scale(sx, sy); |
| } |
| |
| static void skew(JNIEnv*, jobject, jlong canvasHandle, jfloat sx, jfloat sy) { |
| get_canvas(canvasHandle)->skew(sx, sy); |
| } |
| |
| static void translate(JNIEnv*, jobject, jlong canvasHandle, jfloat dx, jfloat dy) { |
| get_canvas(canvasHandle)->translate(dx, dy); |
| } |
| |
| static jboolean getClipBounds(JNIEnv* env, jobject, jlong canvasHandle, jobject bounds) { |
| SkRect r; |
| SkIRect ir; |
| bool result = get_canvas(canvasHandle)->getClipBounds(&r); |
| |
| if (!result) { |
| r.setEmpty(); |
| } |
| r.round(&ir); |
| |
| (void)GraphicsJNI::irect_to_jrect(ir, env, bounds); |
| return result ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jboolean quickRejectRect(JNIEnv* env, jobject, jlong canvasHandle, |
| jfloat left, jfloat top, jfloat right, jfloat bottom) { |
| bool result = get_canvas(canvasHandle)->quickRejectRect(left, top, right, bottom); |
| return result ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jboolean quickRejectPath(JNIEnv* env, jobject, jlong canvasHandle, jlong pathHandle) { |
| SkPath* path = reinterpret_cast<SkPath*>(pathHandle); |
| bool result = get_canvas(canvasHandle)->quickRejectPath(*path); |
| return result ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jboolean clipRect(JNIEnv*, jobject, jlong canvasHandle, jfloat l, jfloat t, |
| jfloat r, jfloat b, jint opHandle) { |
| SkRegion::Op op = static_cast<SkRegion::Op>(opHandle); |
| bool emptyClip = get_canvas(canvasHandle)->clipRect(l, t, r, b, op); |
| return emptyClip ? JNI_FALSE : JNI_TRUE; |
| } |
| |
| static jboolean clipPath(JNIEnv* env, jobject, jlong canvasHandle, jlong pathHandle, |
| jint opHandle) { |
| SkPath* path = reinterpret_cast<SkPath*>(pathHandle); |
| SkRegion::Op op = static_cast<SkRegion::Op>(opHandle); |
| bool emptyClip = get_canvas(canvasHandle)->clipPath(path, op); |
| return emptyClip ? JNI_FALSE : JNI_TRUE; |
| } |
| |
| static jboolean clipRegion(JNIEnv* env, jobject, jlong canvasHandle, jlong deviceRgnHandle, |
| jint opHandle) { |
| SkRegion* deviceRgn = reinterpret_cast<SkRegion*>(deviceRgnHandle); |
| SkRegion::Op op = static_cast<SkRegion::Op>(opHandle); |
| bool emptyClip = get_canvas(canvasHandle)->clipRegion(deviceRgn, op); |
| return emptyClip ? JNI_FALSE : JNI_TRUE; |
| } |
| |
| static void drawColor(JNIEnv* env, jobject, jlong canvasHandle, jint color, jint modeHandle) { |
| SkPorterDuff::Mode mode = static_cast<SkPorterDuff::Mode>(modeHandle); |
| get_canvas(canvasHandle)->drawColor(color, SkPorterDuff::ToXfermodeMode(mode)); |
| } |
| |
| static void drawPaint(JNIEnv* env, jobject, jlong canvasHandle, jlong paintHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawPaint(*paint); |
| } |
| |
| static void drawPoint(JNIEnv*, jobject, jlong canvasHandle, jfloat x, jfloat y, |
| jlong paintHandle) { |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawPoint(x, y, *paint); |
| } |
| |
| static void drawPoints(JNIEnv* env, jobject, jlong canvasHandle, jfloatArray jptsArray, |
| jint offset, jint count, jlong paintHandle) { |
| NPE_CHECK_RETURN_VOID(env, jptsArray); |
| AutoJavaFloatArray autoPts(env, jptsArray); |
| float* floats = autoPts.ptr(); |
| const int length = autoPts.length(); |
| |
| if ((offset | count) < 0 || offset + count > length) { |
| doThrowAIOOBE(env); |
| return; |
| } |
| |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawPoints(floats + offset, count, *paint); |
| } |
| |
| static void drawLine(JNIEnv* env, jobject, jlong canvasHandle, jfloat startX, jfloat startY, |
| jfloat stopX, jfloat stopY, jlong paintHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawLine(startX, startY, stopX, stopY, *paint); |
| } |
| |
| static void drawLines(JNIEnv* env, jobject, jlong canvasHandle, jfloatArray jptsArray, |
| jint offset, jint count, jlong paintHandle) { |
| NPE_CHECK_RETURN_VOID(env, jptsArray); |
| AutoJavaFloatArray autoPts(env, jptsArray); |
| float* floats = autoPts.ptr(); |
| const int length = autoPts.length(); |
| |
| if ((offset | count) < 0 || offset + count > length) { |
| doThrowAIOOBE(env); |
| return; |
| } |
| |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawLines(floats + offset, count, *paint); |
| } |
| |
| static void drawRect(JNIEnv* env, jobject, jlong canvasHandle, jfloat left, jfloat top, |
| jfloat right, jfloat bottom, jlong paintHandle) { |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawRect(left, top, right, bottom, *paint); |
| } |
| |
| static void drawRoundRect(JNIEnv* env, jobject, jlong canvasHandle, jfloat left, jfloat top, |
| jfloat right, jfloat bottom, jfloat rx, jfloat ry, jlong paintHandle) { |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawRoundRect(left, top, right, bottom, rx, ry, *paint); |
| } |
| |
| static void drawCircle(JNIEnv* env, jobject, jlong canvasHandle, jfloat cx, jfloat cy, |
| jfloat radius, jlong paintHandle) { |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawCircle(cx, cy, radius, *paint); |
| } |
| |
| static void drawOval(JNIEnv* env, jobject, jlong canvasHandle, jfloat left, jfloat top, |
| jfloat right, jfloat bottom, jlong paintHandle) { |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawOval(left, top, right, bottom, *paint); |
| } |
| |
| static void drawArc(JNIEnv* env, jobject, jlong canvasHandle, jfloat left, jfloat top, |
| jfloat right, jfloat bottom, jfloat startAngle, jfloat sweepAngle, |
| jboolean useCenter, jlong paintHandle) { |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawArc(left, top, right, bottom, startAngle, sweepAngle, |
| useCenter, *paint); |
| } |
| |
| static void drawPath(JNIEnv* env, jobject, jlong canvasHandle, jlong pathHandle, |
| jlong paintHandle) { |
| const SkPath* path = reinterpret_cast<SkPath*>(pathHandle); |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawPath(*path, *paint); |
| } |
| |
| static void drawVertices(JNIEnv* env, jobject, jlong canvasHandle, |
| jint modeHandle, jint vertexCount, |
| jfloatArray jverts, jint vertIndex, |
| jfloatArray jtexs, jint texIndex, |
| jintArray jcolors, jint colorIndex, |
| jshortArray jindices, jint indexIndex, |
| jint indexCount, jlong paintHandle) { |
| AutoJavaFloatArray vertA(env, jverts, vertIndex + vertexCount); |
| AutoJavaFloatArray texA(env, jtexs, texIndex + vertexCount); |
| AutoJavaIntArray colorA(env, jcolors, colorIndex + vertexCount); |
| AutoJavaShortArray indexA(env, jindices, indexIndex + indexCount); |
| |
| const float* verts = vertA.ptr() + vertIndex; |
| const float* texs = texA.ptr() + vertIndex; |
| const int* colors = NULL; |
| const uint16_t* indices = NULL; |
| |
| if (jcolors != NULL) { |
| colors = colorA.ptr() + colorIndex; |
| } |
| if (jindices != NULL) { |
| indices = (const uint16_t*)(indexA.ptr() + indexIndex); |
| } |
| |
| SkCanvas::VertexMode mode = static_cast<SkCanvas::VertexMode>(modeHandle); |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawVertices(mode, vertexCount, verts, texs, colors, |
| indices, indexCount, *paint); |
| } |
| |
| static void drawBitmap(JNIEnv* env, jobject jcanvas, jlong canvasHandle, jlong bitmapHandle, |
| jfloat left, jfloat top, jlong paintHandle, jint canvasDensity, |
| jint screenDensity, jint bitmapDensity) { |
| Canvas* canvas = get_canvas(canvasHandle); |
| const SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(bitmapHandle); |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| |
| if (canvasDensity == bitmapDensity || canvasDensity == 0 || bitmapDensity == 0) { |
| if (screenDensity != 0 && screenDensity != bitmapDensity) { |
| Paint filteredPaint; |
| if (paint) { |
| filteredPaint = *paint; |
| } |
| filteredPaint.setFilterLevel(Paint::kLow_FilterLevel); |
| canvas->drawBitmap(*bitmap, left, top, &filteredPaint); |
| } else { |
| canvas->drawBitmap(*bitmap, left, top, paint); |
| } |
| } else { |
| canvas->save(SkCanvas::kMatrixClip_SaveFlag); |
| SkScalar scale = canvasDensity / (float)bitmapDensity; |
| canvas->translate(left, top); |
| canvas->scale(scale, scale); |
| |
| Paint filteredPaint; |
| if (paint) { |
| filteredPaint = *paint; |
| } |
| filteredPaint.setFilterLevel(Paint::kLow_FilterLevel); |
| |
| canvas->drawBitmap(*bitmap, 0, 0, &filteredPaint); |
| canvas->restore(); |
| } |
| } |
| |
| static void drawBitmapMatrix(JNIEnv* env, jobject, jlong canvasHandle, jlong bitmapHandle, |
| jlong matrixHandle, jlong paintHandle) { |
| const SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(bitmapHandle); |
| const SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle); |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawBitmap(*bitmap, *matrix, paint); |
| } |
| |
| static void drawBitmapRect(JNIEnv* env, jobject, jlong canvasHandle, jlong bitmapHandle, |
| float srcLeft, float srcTop, float srcRight, float srcBottom, |
| float dstLeft, float dstTop, float dstRight, float dstBottom, |
| jlong paintHandle, jint screenDensity, jint bitmapDensity) { |
| Canvas* canvas = get_canvas(canvasHandle); |
| const SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(bitmapHandle); |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| |
| if (screenDensity != 0 && screenDensity != bitmapDensity) { |
| Paint filteredPaint; |
| if (paint) { |
| filteredPaint = *paint; |
| } |
| filteredPaint.setFilterLevel(Paint::kLow_FilterLevel); |
| canvas->drawBitmap(*bitmap, srcLeft, srcTop, srcRight, srcBottom, |
| dstLeft, dstTop, dstRight, dstBottom, &filteredPaint); |
| } else { |
| canvas->drawBitmap(*bitmap, srcLeft, srcTop, srcRight, srcBottom, |
| dstLeft, dstTop, dstRight, dstBottom, paint); |
| } |
| } |
| |
| static void drawBitmapArray(JNIEnv* env, jobject, jlong canvasHandle, |
| jintArray jcolors, jint offset, jint stride, |
| jfloat x, jfloat y, jint width, jint height, |
| jboolean hasAlpha, jlong paintHandle) { |
| // Note: If hasAlpha is false, kRGB_565_SkColorType will be used, which will |
| // correct the alphaType to kOpaque_SkAlphaType. |
| SkImageInfo info = SkImageInfo::Make(width, height, |
| hasAlpha ? kN32_SkColorType : kRGB_565_SkColorType, |
| kPremul_SkAlphaType); |
| SkBitmap bitmap; |
| if (!bitmap.allocPixels(info)) { |
| return; |
| } |
| |
| if (!GraphicsJNI::SetPixels(env, jcolors, offset, stride, 0, 0, width, height, bitmap)) { |
| return; |
| } |
| |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawBitmap(bitmap, x, y, paint); |
| } |
| |
| static void drawBitmapMesh(JNIEnv* env, jobject, jlong canvasHandle, jlong bitmapHandle, |
| jint meshWidth, jint meshHeight, jfloatArray jverts, |
| jint vertIndex, jintArray jcolors, jint colorIndex, jlong paintHandle) { |
| const int ptCount = (meshWidth + 1) * (meshHeight + 1); |
| AutoJavaFloatArray vertA(env, jverts, vertIndex + (ptCount << 1)); |
| AutoJavaIntArray colorA(env, jcolors, colorIndex + ptCount); |
| |
| const SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(bitmapHandle); |
| const Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| get_canvas(canvasHandle)->drawBitmapMesh(*bitmap, meshWidth, meshHeight, |
| vertA.ptr(), colorA.ptr(), paint); |
| } |
| |
| class DrawTextFunctor { |
| public: |
| DrawTextFunctor(const Layout& layout, Canvas* canvas, uint16_t* glyphs, float* pos, |
| const SkPaint& paint, float x, float y, MinikinRect& bounds) |
| : layout(layout), canvas(canvas), glyphs(glyphs), pos(pos), paint(paint), |
| x(x), y(y), bounds(bounds) { } |
| |
| void operator()(size_t start, size_t end) { |
| if (canvas->drawTextAbsolutePos()) { |
| for (size_t i = start; i < end; i++) { |
| glyphs[i] = layout.getGlyphId(i); |
| pos[2 * i] = x + layout.getX(i); |
| pos[2 * i + 1] = y + layout.getY(i); |
| } |
| } else { |
| for (size_t i = start; i < end; i++) { |
| glyphs[i] = layout.getGlyphId(i); |
| pos[2 * i] = layout.getX(i); |
| pos[2 * i + 1] = layout.getY(i); |
| } |
| } |
| |
| size_t glyphCount = end - start; |
| canvas->drawText(glyphs + start, pos + (2 * start), glyphCount, paint, x, y, |
| bounds.mLeft , bounds.mTop , bounds.mRight , bounds.mBottom); |
| } |
| private: |
| const Layout& layout; |
| Canvas* canvas; |
| uint16_t* glyphs; |
| float* pos; |
| const SkPaint& paint; |
| float x; |
| float y; |
| MinikinRect& bounds; |
| }; |
| |
| // Same values used by Skia |
| #define kStdStrikeThru_Offset (-6.0f / 21.0f) |
| #define kStdUnderline_Offset (1.0f / 9.0f) |
| #define kStdUnderline_Thickness (1.0f / 18.0f) |
| |
| void drawTextDecorations(Canvas* canvas, float x, float y, float length, const SkPaint& paint) { |
| uint32_t flags; |
| SkDrawFilter* drawFilter = canvas->getDrawFilter(); |
| if (drawFilter) { |
| SkPaint paintCopy(paint); |
| drawFilter->filter(&paintCopy, SkDrawFilter::kText_Type); |
| flags = paintCopy.getFlags(); |
| } else { |
| flags = paint.getFlags(); |
| } |
| if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { |
| SkScalar left = x; |
| SkScalar right = x + length; |
| float textSize = paint.getTextSize(); |
| float strokeWidth = fmax(textSize * kStdUnderline_Thickness, 1.0f); |
| if (flags & SkPaint::kUnderlineText_Flag) { |
| SkScalar top = y + textSize * kStdUnderline_Offset - 0.5f * strokeWidth; |
| SkScalar bottom = y + textSize * kStdUnderline_Offset + 0.5f * strokeWidth; |
| canvas->drawRect(left, top, right, bottom, paint); |
| } |
| if (flags & SkPaint::kStrikeThruText_Flag) { |
| SkScalar top = y + textSize * kStdStrikeThru_Offset - 0.5f * strokeWidth; |
| SkScalar bottom = y + textSize * kStdStrikeThru_Offset + 0.5f * strokeWidth; |
| canvas->drawRect(left, top, right, bottom, paint); |
| } |
| } |
| } |
| |
| void drawText(Canvas* canvas, const uint16_t* text, int start, int count, int contextCount, |
| float x, float y, int bidiFlags, const Paint& origPaint, TypefaceImpl* typeface) { |
| // minikin may modify the original paint |
| Paint paint(origPaint); |
| |
| Layout layout; |
| MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, start, count, contextCount); |
| |
| size_t nGlyphs = layout.nGlyphs(); |
| uint16_t* glyphs = new uint16_t[nGlyphs]; |
| float* pos = new float[nGlyphs * 2]; |
| |
| x += MinikinUtils::xOffsetForTextAlign(&paint, layout); |
| |
| MinikinRect bounds; |
| layout.getBounds(&bounds); |
| |
| DrawTextFunctor f(layout, canvas, glyphs, pos, paint, x, y, bounds); |
| MinikinUtils::forFontRun(layout, &paint, f); |
| |
| drawTextDecorations(canvas, x, y, layout.getAdvance(), paint); |
| |
| delete[] glyphs; |
| delete[] pos; |
| } |
| |
| static void drawTextChars(JNIEnv* env, jobject, jlong canvasHandle, jcharArray text, |
| jint index, jint count, jfloat x, jfloat y, jint bidiFlags, |
| jlong paintHandle, jlong typefaceHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); |
| jchar* jchars = env->GetCharArrayElements(text, NULL); |
| drawText(get_canvas(canvasHandle), jchars + index, 0, count, count, x, y, |
| bidiFlags, *paint, typeface); |
| env->ReleaseCharArrayElements(text, jchars, JNI_ABORT); |
| } |
| |
| static void drawTextString(JNIEnv* env, jobject, jlong canvasHandle, jstring text, |
| jint start, jint end, jfloat x, jfloat y, jint bidiFlags, |
| jlong paintHandle, jlong typefaceHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); |
| const int count = end - start; |
| const jchar* jchars = env->GetStringChars(text, NULL); |
| drawText(get_canvas(canvasHandle), jchars + start, 0, count, count, x, y, |
| bidiFlags, *paint, typeface); |
| env->ReleaseStringChars(text, jchars); |
| } |
| |
| static void drawTextRunChars(JNIEnv* env, jobject, jlong canvasHandle, jcharArray text, jint index, |
| jint count, jint contextIndex, jint contextCount, jfloat x, jfloat y, |
| jboolean isRtl, jlong paintHandle, jlong typefaceHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); |
| |
| const int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR; |
| jchar* jchars = env->GetCharArrayElements(text, NULL); |
| drawText(get_canvas(canvasHandle), jchars + contextIndex, index - contextIndex, count, |
| contextCount, x, y, bidiFlags, *paint, typeface); |
| env->ReleaseCharArrayElements(text, jchars, JNI_ABORT); |
| } |
| |
| static void drawTextRunString(JNIEnv* env, jobject obj, jlong canvasHandle, jstring text, |
| jint start, jint end, jint contextStart, jint contextEnd, |
| jfloat x, jfloat y, jboolean isRtl, jlong paintHandle, |
| jlong typefaceHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); |
| |
| int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR; |
| jint count = end - start; |
| jint contextCount = contextEnd - contextStart; |
| const jchar* jchars = env->GetStringChars(text, NULL); |
| drawText(get_canvas(canvasHandle), jchars + contextStart, start - contextStart, count, |
| contextCount, x, y, bidiFlags, *paint, typeface); |
| env->ReleaseStringChars(text, jchars); |
| } |
| |
| static void drawPosTextChars(JNIEnv* env, jobject, jlong canvasHandle, jcharArray text, |
| jint index, jint count, jfloatArray pos, jlong paintHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| jchar* jchars = text ? env->GetCharArrayElements(text, NULL) : NULL; |
| float* posArray = pos ? env->GetFloatArrayElements(pos, NULL) : NULL; |
| int posCount = pos ? env->GetArrayLength(pos) >> 1: 0; |
| |
| get_canvas(canvasHandle)->drawPosText(jchars + index, posArray, count << 1, posCount, *paint); |
| |
| if (text) { |
| env->ReleaseCharArrayElements(text, jchars, 0); |
| } |
| if (pos) { |
| env->ReleaseFloatArrayElements(pos, posArray, 0); |
| } |
| } |
| |
| |
| static void drawPosTextString(JNIEnv* env, jobject, jlong canvasHandle, jstring text, |
| jfloatArray pos, jlong paintHandle) { |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| const jchar* jchars = text ? env->GetStringChars(text, NULL) : NULL; |
| int byteLength = text ? env->GetStringLength(text) : 0; |
| float* posArray = pos ? env->GetFloatArrayElements(pos, NULL) : NULL; |
| int posCount = pos ? env->GetArrayLength(pos) >> 1: 0; |
| |
| get_canvas(canvasHandle)->drawPosText(jchars , posArray, byteLength << 1, posCount, *paint); |
| |
| if (text) { |
| env->ReleaseStringChars(text, jchars); |
| } |
| if (pos) { |
| env->ReleaseFloatArrayElements(pos, posArray, 0); |
| } |
| } |
| |
| class DrawTextOnPathFunctor { |
| public: |
| DrawTextOnPathFunctor(const Layout& layout, Canvas* canvas, float hOffset, |
| float vOffset, const Paint& paint, const SkPath& path) |
| : layout(layout), canvas(canvas), hOffset(hOffset), vOffset(vOffset), |
| paint(paint), path(path) { |
| } |
| void operator()(size_t start, size_t end) { |
| uint16_t glyphs[1]; |
| for (size_t i = start; i < end; i++) { |
| glyphs[0] = layout.getGlyphId(i); |
| float x = hOffset + layout.getX(i); |
| float y = vOffset + layout.getY(i); |
| canvas->drawTextOnPath(glyphs, 1, path, x, y, paint); |
| } |
| } |
| private: |
| const Layout& layout; |
| Canvas* canvas; |
| float hOffset; |
| float vOffset; |
| const Paint& paint; |
| const SkPath& path; |
| }; |
| |
| static void drawTextOnPath(Canvas* canvas, const uint16_t* text, int count, int bidiFlags, |
| const SkPath& path, float hOffset, float vOffset, |
| const Paint& paint, TypefaceImpl* typeface) { |
| Paint paintCopy(paint); |
| Layout layout; |
| MinikinUtils::doLayout(&layout, &paintCopy, bidiFlags, typeface, text, 0, count, count); |
| hOffset += MinikinUtils::hOffsetForTextAlign(&paintCopy, layout, path); |
| |
| // Set align to left for drawing, as we don't want individual |
| // glyphs centered or right-aligned; the offset above takes |
| // care of all alignment. |
| paintCopy.setTextAlign(Paint::kLeft_Align); |
| |
| DrawTextOnPathFunctor f(layout, canvas, hOffset, vOffset, paintCopy, path); |
| MinikinUtils::forFontRun(layout, &paintCopy, f); |
| } |
| |
| static void drawTextOnPathChars(JNIEnv* env, jobject, jlong canvasHandle, jcharArray text, |
| jint index, jint count, jlong pathHandle, jfloat hOffset, |
| jfloat vOffset, jint bidiFlags, jlong paintHandle, |
| jlong typefaceHandle) { |
| SkPath* path = reinterpret_cast<SkPath*>(pathHandle); |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); |
| |
| jchar* jchars = env->GetCharArrayElements(text, NULL); |
| |
| drawTextOnPath(get_canvas(canvasHandle), jchars + index, count, bidiFlags, *path, |
| hOffset, vOffset, *paint, typeface); |
| |
| env->ReleaseCharArrayElements(text, jchars, 0); |
| } |
| |
| static void drawTextOnPathString(JNIEnv* env, jobject, jlong canvasHandle, jstring text, |
| jlong pathHandle, jfloat hOffset, jfloat vOffset, |
| jint bidiFlags, jlong paintHandle, jlong typefaceHandle) { |
| SkPath* path = reinterpret_cast<SkPath*>(pathHandle); |
| Paint* paint = reinterpret_cast<Paint*>(paintHandle); |
| TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); |
| |
| const jchar* jchars = env->GetStringChars(text, NULL); |
| int count = env->GetStringLength(text); |
| |
| drawTextOnPath(get_canvas(canvasHandle), jchars, count, bidiFlags, *path, |
| hOffset, vOffset, *paint, typeface); |
| |
| env->ReleaseStringChars(text, jchars); |
| } |
| |
| static void setDrawFilter(JNIEnv* env, jobject, jlong canvasHandle, jlong filterHandle) { |
| get_canvas(canvasHandle)->setDrawFilter(reinterpret_cast<SkDrawFilter*>(filterHandle)); |
| } |
| |
| static void freeCaches(JNIEnv* env, jobject) { |
| SkGraphics::PurgeFontCache(); |
| } |
| |
| static void freeTextLayoutCaches(JNIEnv* env, jobject) { |
| Layout::purgeCaches(); |
| } |
| |
| }; // namespace CanvasJNI |
| |
| static JNINativeMethod gMethods[] = { |
| {"finalizer", "(J)V", (void*) CanvasJNI::finalizer}, |
| {"initRaster", "(J)J", (void*) CanvasJNI::initRaster}, |
| {"native_setBitmap", "(JJZ)V", (void*) CanvasJNI::setBitmap}, |
| {"native_isOpaque","(J)Z", (void*) CanvasJNI::isOpaque}, |
| {"native_getWidth","(J)I", (void*) CanvasJNI::getWidth}, |
| {"native_getHeight","(J)I", (void*) CanvasJNI::getHeight}, |
| {"native_save","(JI)I", (void*) CanvasJNI::save}, |
| {"native_saveLayer","(JFFFFJI)I", (void*) CanvasJNI::saveLayer}, |
| {"native_saveLayerAlpha","(JFFFFII)I", (void*) CanvasJNI::saveLayerAlpha}, |
| {"native_getSaveCount","(J)I", (void*) CanvasJNI::getSaveCount}, |
| {"native_restore","(J)V", (void*) CanvasJNI::restore}, |
| {"native_restoreToCount","(JI)V", (void*) CanvasJNI::restoreToCount}, |
| {"native_getCTM", "(JJ)V", (void*)CanvasJNI::getCTM}, |
| {"native_setMatrix","(JJ)V", (void*) CanvasJNI::setMatrix}, |
| {"native_concat","(JJ)V", (void*) CanvasJNI::concat}, |
| {"native_rotate","(JF)V", (void*) CanvasJNI::rotate}, |
| {"native_scale","(JFF)V", (void*) CanvasJNI::scale}, |
| {"native_skew","(JFF)V", (void*) CanvasJNI::skew}, |
| {"native_translate","(JFF)V", (void*) CanvasJNI::translate}, |
| {"native_getClipBounds","(JLandroid/graphics/Rect;)Z", (void*) CanvasJNI::getClipBounds}, |
| {"native_quickReject","(JJ)Z", (void*) CanvasJNI::quickRejectPath}, |
| {"native_quickReject","(JFFFF)Z", (void*)CanvasJNI::quickRejectRect}, |
| {"native_clipRect","(JFFFFI)Z", (void*) CanvasJNI::clipRect}, |
| {"native_clipPath","(JJI)Z", (void*) CanvasJNI::clipPath}, |
| {"native_clipRegion","(JJI)Z", (void*) CanvasJNI::clipRegion}, |
| {"native_drawColor","(JII)V", (void*) CanvasJNI::drawColor}, |
| {"native_drawPaint","(JJ)V", (void*) CanvasJNI::drawPaint}, |
| {"native_drawPoint", "(JFFJ)V", (void*) CanvasJNI::drawPoint}, |
| {"native_drawPoints", "(J[FIIJ)V", (void*) CanvasJNI::drawPoints}, |
| {"native_drawLine", "(JFFFFJ)V", (void*) CanvasJNI::drawLine}, |
| {"native_drawLines", "(J[FIIJ)V", (void*) CanvasJNI::drawLines}, |
| {"native_drawRect","(JFFFFJ)V", (void*) CanvasJNI::drawRect}, |
| {"native_drawRoundRect","(JFFFFFFJ)V", (void*) CanvasJNI::drawRoundRect}, |
| {"native_drawCircle","(JFFFJ)V", (void*) CanvasJNI::drawCircle}, |
| {"native_drawOval","(JFFFFJ)V", (void*) CanvasJNI::drawOval}, |
| {"native_drawArc","(JFFFFFFZJ)V", (void*) CanvasJNI::drawArc}, |
| {"native_drawPath","(JJJ)V", (void*) CanvasJNI::drawPath}, |
| {"nativeDrawVertices", "(JII[FI[FI[II[SIIJ)V", (void*)CanvasJNI::drawVertices}, |
| {"native_drawBitmap","(JJFFJIII)V", (void*) CanvasJNI::drawBitmap}, |
| {"nativeDrawBitmapMatrix", "(JJJJ)V", (void*)CanvasJNI::drawBitmapMatrix}, |
| {"native_drawBitmap","(JJFFFFFFFFJII)V", (void*) CanvasJNI::drawBitmapRect}, |
| {"native_drawBitmap", "(J[IIIFFIIZJ)V", (void*)CanvasJNI::drawBitmapArray}, |
| {"nativeDrawBitmapMesh", "(JJII[FI[IIJ)V", (void*)CanvasJNI::drawBitmapMesh}, |
| {"native_drawText","(J[CIIFFIJJ)V", (void*) CanvasJNI::drawTextChars}, |
| {"native_drawText","(JLjava/lang/String;IIFFIJJ)V", (void*) CanvasJNI::drawTextString}, |
| {"native_drawTextRun","(J[CIIIIFFZJJ)V", (void*) CanvasJNI::drawTextRunChars}, |
| {"native_drawTextRun","(JLjava/lang/String;IIIIFFZJJ)V", (void*) CanvasJNI::drawTextRunString}, |
| {"native_drawTextOnPath","(J[CIIJFFIJJ)V", (void*) CanvasJNI::drawTextOnPathChars}, |
| {"native_drawTextOnPath","(JLjava/lang/String;JFFIJJ)V", (void*) CanvasJNI::drawTextOnPathString}, |
| {"nativeSetDrawFilter", "(JJ)V", (void*) CanvasJNI::setDrawFilter}, |
| {"freeCaches", "()V", (void*) CanvasJNI::freeCaches}, |
| {"freeTextLayoutCaches", "()V", (void*) CanvasJNI::freeTextLayoutCaches} |
| }; |
| |
| int register_android_graphics_Canvas(JNIEnv* env) { |
| return AndroidRuntime::registerNativeMethods(env, "android/graphics/Canvas", gMethods, NELEM(gMethods)); |
| } |
| |
| }; // namespace android |
