M7350/base/core/jni/android/graphics/Canvas.cpp

1022 lines
41 KiB
C++
Raw Normal View History

2024-09-09 08:52:07 +00:00
/*
* Copyright (C) 2006-2007 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 "SkCanvas.h"
#include "SkDevice.h"
#include "SkGLCanvas.h"
#include "SkGraphics.h"
#include "SkImageRef_GlobalPool.h"
#include "SkPorterDuff.h"
#include "SkShader.h"
#include "SkTemplates.h"
#include "SkBoundaryPatch.h"
#include "SkMeshUtils.h"
#define TIME_DRAWx
static uint32_t get_thread_msec() {
#if defined(HAVE_POSIX_CLOCKS)
struct timespec tm;
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tm);
return tm.tv_sec * 1000LL + tm.tv_nsec / 1000000;
#else
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000LL + tv.tv_usec / 1000;
#endif
}
namespace android {
class SkCanvasGlue {
public:
static void finalizer(JNIEnv* env, jobject clazz, SkCanvas* canvas) {
canvas->unref();
}
static SkCanvas* initRaster(JNIEnv* env, jobject, SkBitmap* bitmap) {
return bitmap ? new SkCanvas(*bitmap) : new SkCanvas;
}
static SkCanvas* initGL(JNIEnv* env, jobject) {
return new SkGLCanvas;
}
static void freeCaches(JNIEnv* env, jobject) {
// these are called in no particular order
SkGLCanvas::DeleteAllTextures();
SkImageRef_GlobalPool::SetRAMUsed(0);
SkGraphics::SetFontCacheUsed(0);
}
static jboolean isOpaque(JNIEnv* env, jobject jcanvas) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
/*
Currently we cannot support transparency in GL-based canvas' at
the view level. Therefore we cannot base our answer on the device's
bitmap, but need to hard-code the answer. If we relax this
limitation in views, we can simplify the following code as well.
Use the getViewport() call to find out if we're gl-based...
*/
if (canvas->getViewport(NULL)) {
return true;
}
// normal technique, rely on the device's bitmap for the answer
return canvas->getDevice()->accessBitmap(false).isOpaque();
}
static int getWidth(JNIEnv* env, jobject jcanvas) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
return canvas->getDevice()->accessBitmap(false).width();
}
static int getHeight(JNIEnv* env, jobject jcanvas) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
return canvas->getDevice()->accessBitmap(false).height();
}
static void setViewport(JNIEnv* env, jobject, SkCanvas* canvas,
int width, int height) {
canvas->setViewport(width, height);
}
static void setBitmap(JNIEnv* env, jobject, SkCanvas* canvas,
SkBitmap* bitmap) {
canvas->setBitmapDevice(*bitmap);
}
static int saveAll(JNIEnv* env, jobject jcanvas) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
return GraphicsJNI::getNativeCanvas(env, jcanvas)->save();
}
static int save(JNIEnv* env, jobject jcanvas, SkCanvas::SaveFlags flags) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
return GraphicsJNI::getNativeCanvas(env, jcanvas)->save(flags);
}
static int saveLayer(JNIEnv* env, jobject, SkCanvas* canvas, jobject bounds,
SkPaint* paint, int flags) {
SkRect* bounds_ = NULL;
SkRect storage;
if (bounds != NULL) {
GraphicsJNI::jrectf_to_rect(env, bounds, &storage);
bounds_ = &storage;
}
return canvas->saveLayer(bounds_, paint, (SkCanvas::SaveFlags)flags);
}
static int saveLayer4F(JNIEnv* env, jobject, SkCanvas* canvas,
jfloat l, jfloat t, jfloat r, jfloat b,
SkPaint* paint, int flags) {
SkRect bounds;
bounds.set(SkFloatToScalar(l), SkFloatToScalar(t), SkFloatToScalar(r),
SkFloatToScalar(b));
return canvas->saveLayer(&bounds, paint, (SkCanvas::SaveFlags)flags);
}
static int saveLayerAlpha(JNIEnv* env, jobject, SkCanvas* canvas,
jobject bounds, int alpha, int flags) {
SkRect* bounds_ = NULL;
SkRect storage;
if (bounds != NULL) {
GraphicsJNI::jrectf_to_rect(env, bounds, &storage);
bounds_ = &storage;
}
return canvas->saveLayerAlpha(bounds_, alpha,
(SkCanvas::SaveFlags)flags);
}
static int saveLayerAlpha4F(JNIEnv* env, jobject, SkCanvas* canvas,
jfloat l, jfloat t, jfloat r, jfloat b,
int alpha, int flags) {
SkRect bounds;
bounds.set(SkFloatToScalar(l), SkFloatToScalar(t), SkFloatToScalar(r),
SkFloatToScalar(b));
return canvas->saveLayerAlpha(&bounds, alpha,
(SkCanvas::SaveFlags)flags);
}
static void restore(JNIEnv* env, jobject jcanvas) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
if (canvas->getSaveCount() <= 1) { // cannot restore anymore
doThrowISE(env, "Underflow in restore");
return;
}
canvas->restore();
}
static int getSaveCount(JNIEnv* env, jobject jcanvas) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
return GraphicsJNI::getNativeCanvas(env, jcanvas)->getSaveCount();
}
static void restoreToCount(JNIEnv* env, jobject jcanvas, int restoreCount) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
if (restoreCount < 1) {
doThrowIAE(env, "Underflow in restoreToCount");
return;
}
canvas->restoreToCount(restoreCount);
}
static void translate(JNIEnv* env, jobject jcanvas, jfloat dx, jfloat dy) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
SkScalar dx_ = SkFloatToScalar(dx);
SkScalar dy_ = SkFloatToScalar(dy);
(void)GraphicsJNI::getNativeCanvas(env, jcanvas)->translate(dx_, dy_);
}
static void scale__FF(JNIEnv* env, jobject jcanvas, jfloat sx, jfloat sy) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
SkScalar sx_ = SkFloatToScalar(sx);
SkScalar sy_ = SkFloatToScalar(sy);
(void)GraphicsJNI::getNativeCanvas(env, jcanvas)->scale(sx_, sy_);
}
static void rotate__F(JNIEnv* env, jobject jcanvas, jfloat degrees) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
SkScalar degrees_ = SkFloatToScalar(degrees);
(void)GraphicsJNI::getNativeCanvas(env, jcanvas)->rotate(degrees_);
}
static void skew__FF(JNIEnv* env, jobject jcanvas, jfloat sx, jfloat sy) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
SkScalar sx_ = SkFloatToScalar(sx);
SkScalar sy_ = SkFloatToScalar(sy);
(void)GraphicsJNI::getNativeCanvas(env, jcanvas)->skew(sx_, sy_);
}
static void concat(JNIEnv* env, jobject, SkCanvas* canvas,
const SkMatrix* matrix) {
canvas->concat(*matrix);
}
static void setMatrix(JNIEnv* env, jobject, SkCanvas* canvas,
const SkMatrix* matrix) {
if (NULL == matrix) {
canvas->resetMatrix();
} else {
canvas->setMatrix(*matrix);
}
}
static jboolean clipRect_FFFF(JNIEnv* env, jobject jcanvas, jfloat left,
jfloat top, jfloat right, jfloat bottom) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
SkRect r;
r.set(SkFloatToScalar(left), SkFloatToScalar(top),
SkFloatToScalar(right), SkFloatToScalar(bottom));
SkCanvas* c = GraphicsJNI::getNativeCanvas(env, jcanvas);
return c->clipRect(r);
}
static jboolean clipRect_IIII(JNIEnv* env, jobject jcanvas, jint left,
jint top, jint right, jint bottom) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
SkRect r;
r.set(SkIntToScalar(left), SkIntToScalar(top),
SkIntToScalar(right), SkIntToScalar(bottom));
return GraphicsJNI::getNativeCanvas(env, jcanvas)->clipRect(r);
}
static jboolean clipRect_RectF(JNIEnv* env, jobject jcanvas, jobject rectf) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
NPE_CHECK_RETURN_ZERO(env, rectf);
SkCanvas* c = GraphicsJNI::getNativeCanvas(env, jcanvas);
SkRect tmp;
return c->clipRect(*GraphicsJNI::jrectf_to_rect(env, rectf, &tmp));
}
static jboolean clipRect_Rect(JNIEnv* env, jobject jcanvas, jobject rect) {
NPE_CHECK_RETURN_ZERO(env, jcanvas);
NPE_CHECK_RETURN_ZERO(env, rect);
SkCanvas* c = GraphicsJNI::getNativeCanvas(env, jcanvas);
SkRect tmp;
return c->clipRect(*GraphicsJNI::jrect_to_rect(env, rect, &tmp));
}
static jboolean clipRect(JNIEnv* env, jobject, SkCanvas* canvas,
float left, float top, float right, float bottom,
int op) {
SkRect rect;
rect.set(SkFloatToScalar(left), SkFloatToScalar(top),
SkFloatToScalar(right), SkFloatToScalar(bottom));
return canvas->clipRect(rect, (SkRegion::Op)op);
}
static jboolean clipPath(JNIEnv* env, jobject, SkCanvas* canvas,
SkPath* path, int op) {
return canvas->clipPath(*path, (SkRegion::Op)op);
}
static jboolean clipRegion(JNIEnv* env, jobject, SkCanvas* canvas,
SkRegion* deviceRgn, int op) {
return canvas->clipRegion(*deviceRgn, (SkRegion::Op)op);
}
static void setDrawFilter(JNIEnv* env, jobject, SkCanvas* canvas,
SkDrawFilter* filter) {
canvas->setDrawFilter(filter);
}
static jboolean quickReject__RectFI(JNIEnv* env, jobject, SkCanvas* canvas,
jobject rect, int edgetype) {
SkRect rect_;
GraphicsJNI::jrectf_to_rect(env, rect, &rect_);
return canvas->quickReject(rect_, (SkCanvas::EdgeType)edgetype);
}
static jboolean quickReject__PathI(JNIEnv* env, jobject, SkCanvas* canvas,
SkPath* path, int edgetype) {
return canvas->quickReject(*path, (SkCanvas::EdgeType)edgetype);
}
static jboolean quickReject__FFFFI(JNIEnv* env, jobject, SkCanvas* canvas,
jfloat left, jfloat top, jfloat right,
jfloat bottom, int edgetype) {
SkRect r;
r.set(SkFloatToScalar(left), SkFloatToScalar(top),
SkFloatToScalar(right), SkFloatToScalar(bottom));
return canvas->quickReject(r, (SkCanvas::EdgeType)edgetype);
}
static void drawRGB(JNIEnv* env, jobject, SkCanvas* canvas,
jint r, jint g, jint b) {
canvas->drawARGB(0xFF, r, g, b);
}
static void drawARGB(JNIEnv* env, jobject, SkCanvas* canvas,
jint a, jint r, jint g, jint b) {
canvas->drawARGB(a, r, g, b);
}
static void drawColor__I(JNIEnv* env, jobject, SkCanvas* canvas,
jint color) {
canvas->drawColor(color);
}
static void drawColor__II(JNIEnv* env, jobject, SkCanvas* canvas,
jint color, SkPorterDuff::Mode mode) {
canvas->drawColor(color, SkPorterDuff::ToXfermodeMode(mode));
}
static void drawPaint(JNIEnv* env, jobject, SkCanvas* canvas,
SkPaint* paint) {
canvas->drawPaint(*paint);
}
static void doPoints(JNIEnv* env, jobject jcanvas, jfloatArray jptsArray,
jint offset, jint count, jobject jpaint,
SkCanvas::PointMode mode) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
NPE_CHECK_RETURN_VOID(env, jptsArray);
NPE_CHECK_RETURN_VOID(env, jpaint);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
const SkPaint& paint = *GraphicsJNI::getNativePaint(env, jpaint);
AutoJavaFloatArray autoPts(env, jptsArray);
float* floats = autoPts.ptr();
const int length = autoPts.length();
if ((offset | count) < 0 || offset + count > length) {
doThrowAIOOBE(env);
return;
}
// now convert the floats into SkPoints
count >>= 1; // now it is the number of points
SkAutoSTMalloc<32, SkPoint> storage(count);
SkPoint* pts = storage.get();
const float* src = floats + offset;
for (int i = 0; i < count; i++) {
pts[i].set(SkFloatToScalar(src[0]), SkFloatToScalar(src[1]));
src += 2;
}
canvas->drawPoints(mode, count, pts, paint);
}
static void drawPoints(JNIEnv* env, jobject jcanvas, jfloatArray jptsArray,
jint offset, jint count, jobject jpaint) {
doPoints(env, jcanvas, jptsArray, offset, count, jpaint,
SkCanvas::kPoints_PointMode);
}
static void drawLines(JNIEnv* env, jobject jcanvas, jfloatArray jptsArray,
jint offset, jint count, jobject jpaint) {
doPoints(env, jcanvas, jptsArray, offset, count, jpaint,
SkCanvas::kLines_PointMode);
}
static void drawPoint(JNIEnv* env, jobject jcanvas, float x, float y,
jobject jpaint) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
NPE_CHECK_RETURN_VOID(env, jpaint);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
const SkPaint& paint = *GraphicsJNI::getNativePaint(env, jpaint);
canvas->drawPoint(SkFloatToScalar(x), SkFloatToScalar(y), paint);
}
static void drawLine__FFFFPaint(JNIEnv* env, jobject, SkCanvas* canvas,
jfloat startX, jfloat startY, jfloat stopX,
jfloat stopY, SkPaint* paint) {
canvas->drawLine(SkFloatToScalar(startX), SkFloatToScalar(startY),
SkFloatToScalar(stopX), SkFloatToScalar(stopY),
*paint);
}
static void drawRect__RectFPaint(JNIEnv* env, jobject, SkCanvas* canvas,
jobject rect, SkPaint* paint) {
SkRect rect_;
GraphicsJNI::jrectf_to_rect(env, rect, &rect_);
canvas->drawRect(rect_, *paint);
}
static void drawRect__FFFFPaint(JNIEnv* env, jobject, SkCanvas* canvas,
jfloat left, jfloat top, jfloat right,
jfloat bottom, SkPaint* paint) {
SkScalar left_ = SkFloatToScalar(left);
SkScalar top_ = SkFloatToScalar(top);
SkScalar right_ = SkFloatToScalar(right);
SkScalar bottom_ = SkFloatToScalar(bottom);
canvas->drawRectCoords(left_, top_, right_, bottom_, *paint);
}
static void drawOval(JNIEnv* env, jobject, SkCanvas* canvas, jobject joval,
SkPaint* paint) {
SkRect oval;
GraphicsJNI::jrectf_to_rect(env, joval, &oval);
canvas->drawOval(oval, *paint);
}
static void drawCircle(JNIEnv* env, jobject, SkCanvas* canvas, jfloat cx,
jfloat cy, jfloat radius, SkPaint* paint) {
canvas->drawCircle(SkFloatToScalar(cx), SkFloatToScalar(cy),
SkFloatToScalar(radius), *paint);
}
static void drawArc(JNIEnv* env, jobject, SkCanvas* canvas, jobject joval,
jfloat startAngle, jfloat sweepAngle,
jboolean useCenter, SkPaint* paint) {
SkRect oval;
GraphicsJNI::jrectf_to_rect(env, joval, &oval);
canvas->drawArc(oval, SkFloatToScalar(startAngle),
SkFloatToScalar(sweepAngle), useCenter, *paint);
}
static void drawRoundRect(JNIEnv* env, jobject, SkCanvas* canvas,
jobject jrect, jfloat rx, jfloat ry,
SkPaint* paint) {
SkRect rect;
GraphicsJNI::jrectf_to_rect(env, jrect, &rect);
canvas->drawRoundRect(rect, SkFloatToScalar(rx), SkFloatToScalar(ry),
*paint);
}
static void drawPath(JNIEnv* env, jobject, SkCanvas* canvas, SkPath* path,
SkPaint* paint) {
canvas->drawPath(*path, *paint);
}
static void drawPicture(JNIEnv* env, jobject, SkCanvas* canvas,
SkPicture* picture) {
SkASSERT(canvas);
SkASSERT(picture);
#ifdef TIME_DRAW
SkMSec now = get_thread_msec(); //SkTime::GetMSecs();
#endif
canvas->drawPicture(*picture);
#ifdef TIME_DRAW
LOGD("---- picture playback %d ms\n", get_thread_msec() - now);
#endif
}
static void drawBitmap__BitmapFFPaint(JNIEnv* env, jobject jcanvas,
SkCanvas* canvas, SkBitmap* bitmap,
jfloat left, jfloat top,
SkPaint* paint, jint canvasDensity,
jint screenDensity, jint bitmapDensity) {
SkScalar left_ = SkFloatToScalar(left);
SkScalar top_ = SkFloatToScalar(top);
if (canvasDensity == bitmapDensity || canvasDensity == 0
|| bitmapDensity == 0) {
if (screenDensity != 0 && screenDensity != bitmapDensity) {
SkPaint filteredPaint;
if (paint) {
filteredPaint = *paint;
}
filteredPaint.setFilterBitmap(true);
canvas->drawBitmap(*bitmap, left_, top_, &filteredPaint);
} else {
canvas->drawBitmap(*bitmap, left_, top_, paint);
}
} else {
canvas->save();
SkScalar scale = SkFloatToScalar(canvasDensity / (float)bitmapDensity);
canvas->translate(left_, top_);
canvas->scale(scale, scale);
SkPaint filteredPaint;
if (paint) {
filteredPaint = *paint;
}
filteredPaint.setFilterBitmap(true);
canvas->drawBitmap(*bitmap, 0, 0, &filteredPaint);
canvas->restore();
}
}
static void doDrawBitmap(JNIEnv* env, SkCanvas* canvas, SkBitmap* bitmap,
jobject srcIRect, const SkRect& dst, SkPaint* paint,
jint screenDensity, jint bitmapDensity) {
SkIRect src, *srcPtr = NULL;
if (NULL != srcIRect) {
GraphicsJNI::jrect_to_irect(env, srcIRect, &src);
srcPtr = &src;
}
if (screenDensity != 0 && screenDensity != bitmapDensity) {
SkPaint filteredPaint;
if (paint) {
filteredPaint = *paint;
}
filteredPaint.setFilterBitmap(true);
canvas->drawBitmapRect(*bitmap, srcPtr, dst, &filteredPaint);
} else {
canvas->drawBitmapRect(*bitmap, srcPtr, dst, paint);
}
}
static void drawBitmapRF(JNIEnv* env, jobject, SkCanvas* canvas,
SkBitmap* bitmap, jobject srcIRect,
jobject dstRectF, SkPaint* paint,
jint screenDensity, jint bitmapDensity) {
SkRect dst;
GraphicsJNI::jrectf_to_rect(env, dstRectF, &dst);
doDrawBitmap(env, canvas, bitmap, srcIRect, dst, paint,
screenDensity, bitmapDensity);
}
static void drawBitmapRR(JNIEnv* env, jobject, SkCanvas* canvas,
SkBitmap* bitmap, jobject srcIRect,
jobject dstRect, SkPaint* paint,
jint screenDensity, jint bitmapDensity) {
SkRect dst;
GraphicsJNI::jrect_to_rect(env, dstRect, &dst);
doDrawBitmap(env, canvas, bitmap, srcIRect, dst, paint,
screenDensity, bitmapDensity);
}
static void drawBitmapArray(JNIEnv* env, jobject, SkCanvas* canvas,
jintArray jcolors, int offset, int stride,
jfloat x, jfloat y, int width, int height,
jboolean hasAlpha, SkPaint* paint)
{
SkBitmap bitmap;
bitmap.setConfig(hasAlpha ? SkBitmap::kARGB_8888_Config :
SkBitmap::kRGB_565_Config, width, height);
if (!bitmap.allocPixels()) {
return;
}
if (!GraphicsJNI::SetPixels(env, jcolors, offset, stride,
0, 0, width, height, bitmap)) {
return;
}
canvas->drawBitmap(bitmap, SkFloatToScalar(x), SkFloatToScalar(y),
paint);
}
static void drawBitmapMatrix(JNIEnv* env, jobject, SkCanvas* canvas,
const SkBitmap* bitmap, const SkMatrix* matrix,
const SkPaint* paint) {
canvas->drawBitmapMatrix(*bitmap, *matrix, paint);
}
static void drawBitmapMesh(JNIEnv* env, jobject, SkCanvas* canvas,
const SkBitmap* bitmap, int meshWidth, int meshHeight,
jfloatArray jverts, int vertIndex, jintArray jcolors,
int colorIndex, const SkPaint* paint) {
const int ptCount = (meshWidth + 1) * (meshHeight + 1);
const int indexCount = meshWidth * meshHeight * 6;
AutoJavaFloatArray vertA(env, jverts, vertIndex + (ptCount << 1));
AutoJavaIntArray colorA(env, jcolors, colorIndex + ptCount);
/* Our temp storage holds 2 or 3 arrays.
texture points [ptCount * sizeof(SkPoint)]
optionally vertex points [ptCount * sizeof(SkPoint)] if we need a
copy to convert from float to fixed
indices [ptCount * sizeof(uint16_t)]
*/
ssize_t storageSize = ptCount * sizeof(SkPoint); // texs[]
#ifdef SK_SCALAR_IS_FIXED
storageSize += ptCount * sizeof(SkPoint); // storage for verts
#endif
storageSize += indexCount * sizeof(uint16_t); // indices[]
SkAutoMalloc storage(storageSize);
SkPoint* texs = (SkPoint*)storage.get();
SkPoint* verts;
uint16_t* indices;
#ifdef SK_SCALAR_IS_FLOAT
verts = (SkPoint*)(vertA.ptr() + vertIndex);
indices = (uint16_t*)(texs + ptCount);
#else
verts = texs + ptCount;
indices = (uint16_t*)(verts + ptCount);
// convert floats to fixed
{
const float* src = vertA.ptr() + vertIndex;
for (int i = 0; i < ptCount; i++) {
verts[i].set(SkFloatToFixed(src[0]), SkFloatToFixed(src[1]));
src += 2;
}
}
#endif
// cons up texture coordinates and indices
{
const SkScalar w = SkIntToScalar(bitmap->width());
const SkScalar h = SkIntToScalar(bitmap->height());
const SkScalar dx = w / meshWidth;
const SkScalar dy = h / meshHeight;
SkPoint* texsPtr = texs;
SkScalar y = 0;
for (int i = 0; i <= meshHeight; i++) {
if (i == meshHeight) {
y = h; // to ensure numerically we hit h exactly
}
SkScalar x = 0;
for (int j = 0; j < meshWidth; j++) {
texsPtr->set(x, y);
texsPtr += 1;
x += dx;
}
texsPtr->set(w, y);
texsPtr += 1;
y += dy;
}
SkASSERT(texsPtr - texs == ptCount);
}
// cons up indices
{
uint16_t* indexPtr = indices;
int index = 0;
for (int i = 0; i < meshHeight; i++) {
for (int j = 0; j < meshWidth; j++) {
// lower-left triangle
*indexPtr++ = index;
*indexPtr++ = index + meshWidth + 1;
*indexPtr++ = index + meshWidth + 2;
// upper-right triangle
*indexPtr++ = index;
*indexPtr++ = index + meshWidth + 2;
*indexPtr++ = index + 1;
// bump to the next cell
index += 1;
}
// bump to the next row
index += 1;
}
SkASSERT(indexPtr - indices == indexCount);
SkASSERT((char*)indexPtr - (char*)storage.get() == storageSize);
}
// double-check that we have legal indices
#ifdef SK_DEBUG
{
for (int i = 0; i < indexCount; i++) {
SkASSERT((unsigned)indices[i] < (unsigned)ptCount);
}
}
#endif
// cons-up a shader for the bitmap
SkPaint tmpPaint;
if (paint) {
tmpPaint = *paint;
}
SkShader* shader = SkShader::CreateBitmapShader(*bitmap,
SkShader::kClamp_TileMode, SkShader::kClamp_TileMode);
tmpPaint.setShader(shader)->safeUnref();
canvas->drawVertices(SkCanvas::kTriangles_VertexMode, ptCount, verts,
texs, (const SkColor*)colorA.ptr(), NULL, indices,
indexCount, tmpPaint);
}
static void drawVertices(JNIEnv* env, jobject, SkCanvas* canvas,
SkCanvas::VertexMode mode, int vertexCount,
jfloatArray jverts, int vertIndex,
jfloatArray jtexs, int texIndex,
jintArray jcolors, int colorIndex,
jshortArray jindices, int indexIndex,
int indexCount, const SkPaint* paint) {
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 int ptCount = vertexCount >> 1;
SkPoint* verts;
SkPoint* texs = NULL;
#ifdef SK_SCALAR_IS_FLOAT
verts = (SkPoint*)(vertA.ptr() + vertIndex);
if (jtexs != NULL) {
texs = (SkPoint*)(texA.ptr() + texIndex);
}
#else
int count = ptCount; // for verts
if (jtexs != NULL) {
count += ptCount; // += for texs
}
SkAutoMalloc storage(count * sizeof(SkPoint));
verts = (SkPoint*)storage.get();
const float* src = vertA.ptr() + vertIndex;
for (int i = 0; i < ptCount; i++) {
verts[i].set(SkFloatToFixed(src[0]), SkFloatToFixed(src[1]));
src += 2;
}
if (jtexs != NULL) {
texs = verts + ptCount;
src = texA.ptr() + texIndex;
for (int i = 0; i < ptCount; i++) {
texs[i].set(SkFloatToFixed(src[0]), SkFloatToFixed(src[1]));
src += 2;
}
}
#endif
const SkColor* colors = NULL;
const uint16_t* indices = NULL;
if (jcolors != NULL) {
colors = (const SkColor*)(colorA.ptr() + colorIndex);
}
if (jindices != NULL) {
indices = (const uint16_t*)(indexA.ptr() + indexIndex);
}
canvas->drawVertices(mode, ptCount, verts, texs, colors, NULL,
indices, indexCount, *paint);
}
static void drawText___CIIFFPaint(JNIEnv* env, jobject, SkCanvas* canvas,
jcharArray text, int index, int count,
jfloat x, jfloat y, SkPaint* paint) {
jchar* textArray = env->GetCharArrayElements(text, NULL);
jsize textCount = env->GetArrayLength(text);
SkScalar x_ = SkFloatToScalar(x);
SkScalar y_ = SkFloatToScalar(y);
canvas->drawText(textArray + index, count << 1, x_, y_, *paint);
env->ReleaseCharArrayElements(text, textArray, 0);
}
static void drawText__StringIIFFPaint(JNIEnv* env, jobject,
SkCanvas* canvas, jstring text, int start, int end,
jfloat x, jfloat y, SkPaint* paint) {
const void* text_ = env->GetStringChars(text, NULL);
SkScalar x_ = SkFloatToScalar(x);
SkScalar y_ = SkFloatToScalar(y);
canvas->drawText((const uint16_t*)text_ + start, (end - start) << 1,
x_, y_, *paint);
env->ReleaseStringChars(text, (const jchar*) text_);
}
static void drawString(JNIEnv* env, jobject canvas, jstring text,
jfloat x, jfloat y, jobject paint) {
NPE_CHECK_RETURN_VOID(env, canvas);
NPE_CHECK_RETURN_VOID(env, paint);
NPE_CHECK_RETURN_VOID(env, text);
size_t count = env->GetStringLength(text);
if (0 == count) {
return;
}
const jchar* text_ = env->GetStringChars(text, NULL);
SkCanvas* c = GraphicsJNI::getNativeCanvas(env, canvas);
c->drawText(text_, count << 1, SkFloatToScalar(x), SkFloatToScalar(y),
*GraphicsJNI::getNativePaint(env, paint));
env->ReleaseStringChars(text, text_);
}
static void drawPosText___CII_FPaint(JNIEnv* env, jobject, SkCanvas* canvas,
jcharArray text, int index, int count,
jfloatArray pos, SkPaint* paint) {
jchar* textArray = text ? env->GetCharArrayElements(text, NULL) : NULL;
jsize textCount = text ? env->GetArrayLength(text) : NULL;
float* posArray = pos ? env->GetFloatArrayElements(pos, NULL) : NULL;
int posCount = pos ? env->GetArrayLength(pos) >> 1: 0;
SkPoint* posPtr = posCount > 0 ? new SkPoint[posCount] : NULL;
int indx;
for (indx = 0; indx < posCount; indx++) {
posPtr[indx].fX = SkFloatToScalar(posArray[indx << 1]);
posPtr[indx].fY = SkFloatToScalar(posArray[(indx << 1) + 1]);
}
canvas->drawPosText(textArray + index, count << 1, posPtr, *paint);
if (text) {
env->ReleaseCharArrayElements(text, textArray, 0);
}
if (pos) {
env->ReleaseFloatArrayElements(pos, posArray, 0);
}
delete[] posPtr;
}
static void drawPosText__String_FPaint(JNIEnv* env, jobject,
SkCanvas* canvas, jstring text,
jfloatArray pos, SkPaint* paint) {
const void* text_ = 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;
SkPoint* posPtr = posCount > 0 ? new SkPoint[posCount] : NULL;
for (int indx = 0; indx < posCount; indx++) {
posPtr[indx].fX = SkFloatToScalar(posArray[indx << 1]);
posPtr[indx].fY = SkFloatToScalar(posArray[(indx << 1) + 1]);
}
canvas->drawPosText(text_, byteLength << 1, posPtr, *paint);
if (text) {
env->ReleaseStringChars(text, (const jchar*) text_);
}
if (pos) {
env->ReleaseFloatArrayElements(pos, posArray, 0);
}
delete[] posPtr;
}
static void drawTextOnPath___CIIPathFFPaint(JNIEnv* env, jobject,
SkCanvas* canvas, jcharArray text, int index, int count,
SkPath* path, jfloat hOffset, jfloat vOffset, SkPaint* paint) {
jchar* textArray = env->GetCharArrayElements(text, NULL);
canvas->drawTextOnPathHV(textArray + index, count << 1, *path,
SkFloatToScalar(hOffset), SkFloatToScalar(vOffset), *paint);
env->ReleaseCharArrayElements(text, textArray, 0);
}
static void drawTextOnPath__StringPathFFPaint(JNIEnv* env, jobject,
SkCanvas* canvas, jstring text, SkPath* path,
jfloat hOffset, jfloat vOffset, SkPaint* paint) {
const jchar* text_ = env->GetStringChars(text, NULL);
int byteLength = env->GetStringLength(text) << 1;
canvas->drawTextOnPathHV(text_, byteLength, *path,
SkFloatToScalar(hOffset), SkFloatToScalar(vOffset), *paint);
env->ReleaseStringChars(text, text_);
}
static bool getClipBounds(JNIEnv* env, jobject, SkCanvas* canvas,
jobject bounds) {
SkRect r;
SkIRect ir;
bool result = canvas->getClipBounds(&r, SkCanvas::kBW_EdgeType);
r.round(&ir);
(void)GraphicsJNI::irect_to_jrect(ir, env, bounds);
return result;
}
static void getCTM(JNIEnv* env, jobject, SkCanvas* canvas,
SkMatrix* matrix) {
*matrix = canvas->getTotalMatrix();
}
};
static JNINativeMethod gCanvasMethods[] = {
{"finalizer", "(I)V", (void*) SkCanvasGlue::finalizer},
{"initRaster","(I)I", (void*) SkCanvasGlue::initRaster},
{"initGL","()I", (void*) SkCanvasGlue::initGL},
{"isOpaque","()Z", (void*) SkCanvasGlue::isOpaque},
{"getWidth","()I", (void*) SkCanvasGlue::getWidth},
{"getHeight","()I", (void*) SkCanvasGlue::getHeight},
{"native_setBitmap","(II)V", (void*) SkCanvasGlue::setBitmap},
{"nativeSetViewport", "(III)V", (void*) SkCanvasGlue::setViewport},
{"save","()I", (void*) SkCanvasGlue::saveAll},
{"save","(I)I", (void*) SkCanvasGlue::save},
{"native_saveLayer","(ILandroid/graphics/RectF;II)I",
(void*) SkCanvasGlue::saveLayer},
{"native_saveLayer","(IFFFFII)I", (void*) SkCanvasGlue::saveLayer4F},
{"native_saveLayerAlpha","(ILandroid/graphics/RectF;II)I",
(void*) SkCanvasGlue::saveLayerAlpha},
{"native_saveLayerAlpha","(IFFFFII)I",
(void*) SkCanvasGlue::saveLayerAlpha4F},
{"restore","()V", (void*) SkCanvasGlue::restore},
{"getSaveCount","()I", (void*) SkCanvasGlue::getSaveCount},
{"restoreToCount","(I)V", (void*) SkCanvasGlue::restoreToCount},
{"translate","(FF)V", (void*) SkCanvasGlue::translate},
{"scale","(FF)V", (void*) SkCanvasGlue::scale__FF},
{"rotate","(F)V", (void*) SkCanvasGlue::rotate__F},
{"skew","(FF)V", (void*) SkCanvasGlue::skew__FF},
{"native_concat","(II)V", (void*) SkCanvasGlue::concat},
{"native_setMatrix","(II)V", (void*) SkCanvasGlue::setMatrix},
{"clipRect","(FFFF)Z", (void*) SkCanvasGlue::clipRect_FFFF},
{"clipRect","(IIII)Z", (void*) SkCanvasGlue::clipRect_IIII},
{"clipRect","(Landroid/graphics/RectF;)Z",
(void*) SkCanvasGlue::clipRect_RectF},
{"clipRect","(Landroid/graphics/Rect;)Z",
(void*) SkCanvasGlue::clipRect_Rect},
{"native_clipRect","(IFFFFI)Z", (void*) SkCanvasGlue::clipRect},
{"native_clipPath","(III)Z", (void*) SkCanvasGlue::clipPath},
{"native_clipRegion","(III)Z", (void*) SkCanvasGlue::clipRegion},
{"nativeSetDrawFilter", "(II)V", (void*) SkCanvasGlue::setDrawFilter},
{"native_getClipBounds","(ILandroid/graphics/Rect;)Z",
(void*) SkCanvasGlue::getClipBounds},
{"native_getCTM", "(II)V", (void*)SkCanvasGlue::getCTM},
{"native_quickReject","(ILandroid/graphics/RectF;I)Z",
(void*) SkCanvasGlue::quickReject__RectFI},
{"native_quickReject","(III)Z", (void*) SkCanvasGlue::quickReject__PathI},
{"native_quickReject","(IFFFFI)Z", (void*)SkCanvasGlue::quickReject__FFFFI},
{"native_drawRGB","(IIII)V", (void*) SkCanvasGlue::drawRGB},
{"native_drawARGB","(IIIII)V", (void*) SkCanvasGlue::drawARGB},
{"native_drawColor","(II)V", (void*) SkCanvasGlue::drawColor__I},
{"native_drawColor","(III)V", (void*) SkCanvasGlue::drawColor__II},
{"native_drawPaint","(II)V", (void*) SkCanvasGlue::drawPaint},
{"drawPoint", "(FFLandroid/graphics/Paint;)V",
(void*) SkCanvasGlue::drawPoint},
{"drawPoints", "([FIILandroid/graphics/Paint;)V",
(void*) SkCanvasGlue::drawPoints},
{"drawLines", "([FIILandroid/graphics/Paint;)V",
(void*) SkCanvasGlue::drawLines},
{"native_drawLine","(IFFFFI)V", (void*) SkCanvasGlue::drawLine__FFFFPaint},
{"native_drawRect","(ILandroid/graphics/RectF;I)V",
(void*) SkCanvasGlue::drawRect__RectFPaint},
{"native_drawRect","(IFFFFI)V", (void*) SkCanvasGlue::drawRect__FFFFPaint},
{"native_drawOval","(ILandroid/graphics/RectF;I)V",
(void*) SkCanvasGlue::drawOval},
{"native_drawCircle","(IFFFI)V", (void*) SkCanvasGlue::drawCircle},
{"native_drawArc","(ILandroid/graphics/RectF;FFZI)V",
(void*) SkCanvasGlue::drawArc},
{"native_drawRoundRect","(ILandroid/graphics/RectF;FFI)V",
(void*) SkCanvasGlue::drawRoundRect},
{"native_drawPath","(III)V", (void*) SkCanvasGlue::drawPath},
{"native_drawBitmap","(IIFFIIII)V",
(void*) SkCanvasGlue::drawBitmap__BitmapFFPaint},
{"native_drawBitmap","(IILandroid/graphics/Rect;Landroid/graphics/RectF;III)V",
(void*) SkCanvasGlue::drawBitmapRF},
{"native_drawBitmap","(IILandroid/graphics/Rect;Landroid/graphics/Rect;III)V",
(void*) SkCanvasGlue::drawBitmapRR},
{"native_drawBitmap", "(I[IIIFFIIZI)V",
(void*)SkCanvasGlue::drawBitmapArray},
{"nativeDrawBitmapMatrix", "(IIII)V",
(void*)SkCanvasGlue::drawBitmapMatrix},
{"nativeDrawBitmapMesh", "(IIII[FI[III)V",
(void*)SkCanvasGlue::drawBitmapMesh},
{"nativeDrawVertices", "(III[FI[FI[II[SIII)V",
(void*)SkCanvasGlue::drawVertices},
{"native_drawText","(I[CIIFFI)V",
(void*) SkCanvasGlue::drawText___CIIFFPaint},
{"native_drawText","(ILjava/lang/String;IIFFI)V",
(void*) SkCanvasGlue::drawText__StringIIFFPaint},
{"drawText","(Ljava/lang/String;FFLandroid/graphics/Paint;)V",
(void*) SkCanvasGlue::drawString},
{"native_drawPosText","(I[CII[FI)V",
(void*) SkCanvasGlue::drawPosText___CII_FPaint},
{"native_drawPosText","(ILjava/lang/String;[FI)V",
(void*) SkCanvasGlue::drawPosText__String_FPaint},
{"native_drawTextOnPath","(I[CIIIFFI)V",
(void*) SkCanvasGlue::drawTextOnPath___CIIPathFFPaint},
{"native_drawTextOnPath","(ILjava/lang/String;IFFI)V",
(void*) SkCanvasGlue::drawTextOnPath__StringPathFFPaint},
{"native_drawPicture", "(II)V", (void*) SkCanvasGlue::drawPicture},
{"freeCaches", "()V", (void*) SkCanvasGlue::freeCaches}
};
///////////////////////////////////////////////////////////////////////////////
static void BoundaryPatch_computeCubic(JNIEnv* env, jobject, jfloatArray jpts,
int texW, int texH, int rows, int cols,
jfloatArray jverts, jshortArray jidx) {
AutoJavaFloatArray ptsArray(env, jpts, 24, kRO_JNIAccess);
int vertCount = rows * cols;
AutoJavaFloatArray vertsArray(env, jverts, vertCount * 4, kRW_JNIAccess);
SkPoint* verts = (SkPoint*)vertsArray.ptr();
SkPoint* texs = verts + vertCount;
int idxCount = (rows - 1) * (cols - 1) * 6;
AutoJavaShortArray idxArray(env, jidx, idxCount, kRW_JNIAccess);
uint16_t* idx = (uint16_t*)idxArray.ptr(); // cast from int16_t*
SkCubicBoundary cubic;
memcpy(cubic.fPts, ptsArray.ptr(), 12 * sizeof(SkPoint));
SkBoundaryPatch patch;
patch.setBoundary(&cubic);
// generate our verts
patch.evalPatch(verts, rows, cols);
SkMeshIndices mesh;
// generate our texs and idx
mesh.init(texs, idx, texW, texH, rows, cols);
}
static JNINativeMethod gBoundaryPatchMethods[] = {
{"nativeComputeCubicPatch", "([FIIII[F[S)V",
(void*)BoundaryPatch_computeCubic },
};
///////////////////////////////////////////////////////////////////////////////
#include <android_runtime/AndroidRuntime.h>
#define REG(env, name, array) \
result = android::AndroidRuntime::registerNativeMethods(env, name, array, \
SK_ARRAY_COUNT(array)); \
if (result < 0) return result
int register_android_graphics_Canvas(JNIEnv* env) {
int result;
REG(env, "android/graphics/Canvas", gCanvasMethods);
REG(env, "android/graphics/utils/BoundaryPatch", gBoundaryPatchMethods);
return result;
}
}