271 lines
10 KiB
C++
271 lines
10 KiB
C++
#include "SkRegion.h"
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#include "SkPath.h"
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#include "GraphicsJNI.h"
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#include <jni.h>
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static jfieldID gRegion_nativeInstanceFieldID;
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static inline SkRegion* GetSkRegion(JNIEnv* env, jobject regionObject) {
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SkRegion* rgn = (SkRegion*)env->GetIntField(regionObject, gRegion_nativeInstanceFieldID);
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SkASSERT(rgn != NULL);
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return rgn;
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}
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static SkRegion* Region_constructor(JNIEnv* env, jobject) {
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return new SkRegion;
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}
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static void Region_destructor(JNIEnv* env, jobject, SkRegion* region) {
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SkASSERT(region);
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delete region;
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}
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static void Region_setRegion(JNIEnv* env, jobject, SkRegion* dst, const SkRegion* src) {
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SkASSERT(dst && src);
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*dst = *src;
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}
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static jboolean Region_setRect(JNIEnv* env, jobject, SkRegion* dst, int left, int top, int right, int bottom) {
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return dst->setRect(left, top, right, bottom);
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}
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static jboolean Region_setPath(JNIEnv* env, jobject, SkRegion* dst,
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const SkPath* path, const SkRegion* clip) {
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SkASSERT(dst && path && clip);
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return dst->setPath(*path, *clip);
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}
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static jboolean Region_getBounds(JNIEnv* env, jobject, SkRegion* region, jobject rectBounds) {
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GraphicsJNI::irect_to_jrect(region->getBounds(), env, rectBounds);
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return !region->isEmpty();
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}
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static jboolean Region_getBoundaryPath(JNIEnv* env, jobject, const SkRegion* region, SkPath* path) {
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return region->getBoundaryPath(path);
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}
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static jboolean Region_op0(JNIEnv* env, jobject, SkRegion* dst, int left, int top, int right, int bottom, int op) {
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SkIRect ir;
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ir.set(left, top, right, bottom);
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return dst->op(ir, (SkRegion::Op)op);
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}
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static jboolean Region_op1(JNIEnv* env, jobject, SkRegion* dst, jobject rectObject, const SkRegion* region, int op) {
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SkIRect ir;
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GraphicsJNI::jrect_to_irect(env, rectObject, &ir);
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return dst->op(ir, *region, (SkRegion::Op)op);
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}
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static jboolean Region_op2(JNIEnv* env, jobject, SkRegion* dst, const SkRegion* region1, const SkRegion* region2, int op) {
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return dst->op(*region1, *region2, (SkRegion::Op)op);
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}
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//////////////////////////////////// These are methods, not static
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static jboolean Region_isEmpty(JNIEnv* env, jobject region) {
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return GetSkRegion(env, region)->isEmpty();
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}
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static jboolean Region_isRect(JNIEnv* env, jobject region) {
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return GetSkRegion(env, region)->isRect();
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}
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static jboolean Region_isComplex(JNIEnv* env, jobject region) {
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return GetSkRegion(env, region)->isComplex();
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}
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static jboolean Region_contains(JNIEnv* env, jobject region, int x, int y) {
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return GetSkRegion(env, region)->contains(x, y);
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}
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static jboolean Region_quickContains(JNIEnv* env, jobject region, int left, int top, int right, int bottom) {
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return GetSkRegion(env, region)->quickContains(left, top, right, bottom);
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}
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static jboolean Region_quickRejectIIII(JNIEnv* env, jobject region, int left, int top, int right, int bottom) {
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SkIRect ir;
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ir.set(left, top, right, bottom);
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return GetSkRegion(env, region)->quickReject(ir);
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}
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static jboolean Region_quickRejectRgn(JNIEnv* env, jobject region, jobject other) {
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return GetSkRegion(env, region)->quickReject(*GetSkRegion(env, other));
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}
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static void Region_translate(JNIEnv* env, jobject region, int x, int y, jobject dst) {
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SkRegion* rgn = GetSkRegion(env, region);
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if (dst)
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rgn->translate(x, y, GetSkRegion(env, dst));
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else
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rgn->translate(x, y);
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}
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// Scale the rectangle by given scale and set the reuslt to the dst.
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static void scale_rect(SkIRect* dst, const SkIRect& src, float scale) {
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dst->fLeft = (int)::roundf(src.fLeft * scale);
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dst->fTop = (int)::roundf(src.fTop * scale);
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dst->fRight = (int)::roundf(src.fRight * scale);
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dst->fBottom = (int)::roundf(src.fBottom * scale);
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}
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// Scale the region by given scale and set the reuslt to the dst.
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// dest and src can be the same region instance.
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static void scale_rgn(SkRegion* dst, const SkRegion& src, float scale) {
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SkRegion tmp;
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SkRegion::Iterator iter(src);
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for (; !iter.done(); iter.next()) {
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SkIRect r;
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scale_rect(&r, iter.rect(), scale);
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tmp.op(r, SkRegion::kUnion_Op);
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}
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dst->swap(tmp);
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}
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static void Region_scale(JNIEnv* env, jobject region, jfloat scale, jobject dst) {
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SkRegion* rgn = GetSkRegion(env, region);
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if (dst)
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scale_rgn(GetSkRegion(env, dst), *rgn, scale);
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else
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scale_rgn(rgn, *rgn, scale);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#include <binder/Parcel.h>
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#include "android_util_Binder.h"
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static SkRegion* Region_createFromParcel(JNIEnv* env, jobject clazz, jobject parcel)
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{
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if (parcel == NULL) {
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return NULL;
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}
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android::Parcel* p = android::parcelForJavaObject(env, parcel);
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SkRegion* region = new SkRegion;
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size_t size = p->readInt32();
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region->unflatten(p->readInplace(size));
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return region;
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}
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static jboolean Region_writeToParcel(JNIEnv* env, jobject clazz, const SkRegion* region, jobject parcel)
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{
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if (parcel == NULL) {
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return false;
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}
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android::Parcel* p = android::parcelForJavaObject(env, parcel);
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size_t size = region->flatten(NULL);
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p->writeInt32(size);
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region->flatten(p->writeInplace(size));
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////
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static jboolean Region_equals(JNIEnv* env, jobject clazz, const SkRegion *r1, const SkRegion* r2)
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{
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return (jboolean) (*r1 == *r2);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////
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struct RgnIterPair {
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SkRegion fRgn; // a copy of the caller's region
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SkRegion::Iterator fIter; // an iterator acting upon the copy (fRgn)
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RgnIterPair(const SkRegion& rgn) : fRgn(rgn) {
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// have our iterator reference our copy (fRgn), so we know it will be
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// unchanged for the lifetime of the iterator
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fIter.reset(fRgn);
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}
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};
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static RgnIterPair* RegionIter_constructor(JNIEnv* env, jobject, const SkRegion* region)
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{
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SkASSERT(region);
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return new RgnIterPair(*region);
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}
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static void RegionIter_destructor(JNIEnv* env, jobject, RgnIterPair* pair)
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{
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SkASSERT(pair);
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delete pair;
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}
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static jboolean RegionIter_next(JNIEnv* env, jobject, RgnIterPair* pair, jobject rectObject)
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{
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// the caller has checked that rectObject is not nul
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SkASSERT(pair);
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SkASSERT(rectObject);
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if (!pair->fIter.done()) {
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GraphicsJNI::irect_to_jrect(pair->fIter.rect(), env, rectObject);
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pair->fIter.next();
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return true;
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}
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return false;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#include <android_runtime/AndroidRuntime.h>
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static JNINativeMethod gRegionIterMethods[] = {
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{ "nativeConstructor", "(I)I", (void*)RegionIter_constructor },
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{ "nativeDestructor", "(I)V", (void*)RegionIter_destructor },
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{ "nativeNext", "(ILandroid/graphics/Rect;)Z", (void*)RegionIter_next }
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};
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static JNINativeMethod gRegionMethods[] = {
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// these are static methods
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{ "nativeConstructor", "()I", (void*)Region_constructor },
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{ "nativeDestructor", "(I)V", (void*)Region_destructor },
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{ "nativeSetRegion", "(II)Z", (void*)Region_setRegion },
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{ "nativeSetRect", "(IIIII)Z", (void*)Region_setRect },
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{ "nativeSetPath", "(III)Z", (void*)Region_setPath },
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{ "nativeGetBounds", "(ILandroid/graphics/Rect;)Z", (void*)Region_getBounds },
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{ "nativeGetBoundaryPath", "(II)Z", (void*)Region_getBoundaryPath },
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{ "nativeOp", "(IIIIII)Z", (void*)Region_op0 },
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{ "nativeOp", "(ILandroid/graphics/Rect;II)Z", (void*)Region_op1 },
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{ "nativeOp", "(IIII)Z", (void*)Region_op2 },
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// these are methods that take the java region object
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{ "isEmpty", "()Z", (void*)Region_isEmpty },
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{ "isRect", "()Z", (void*)Region_isRect },
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{ "isComplex", "()Z", (void*)Region_isComplex },
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{ "contains", "(II)Z", (void*)Region_contains },
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{ "quickContains", "(IIII)Z", (void*)Region_quickContains },
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{ "quickReject", "(IIII)Z", (void*)Region_quickRejectIIII },
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{ "quickReject", "(Landroid/graphics/Region;)Z", (void*)Region_quickRejectRgn },
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{ "scale", "(FLandroid/graphics/Region;)V", (void*)Region_scale },
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{ "translate", "(IILandroid/graphics/Region;)V", (void*)Region_translate },
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// parceling methods
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{ "nativeCreateFromParcel", "(Landroid/os/Parcel;)I", (void*)Region_createFromParcel },
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{ "nativeWriteToParcel", "(ILandroid/os/Parcel;)Z", (void*)Region_writeToParcel },
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{ "nativeEquals", "(II)Z", (void*)Region_equals },
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};
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int register_android_graphics_Region(JNIEnv* env);
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int register_android_graphics_Region(JNIEnv* env)
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{
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jclass clazz = env->FindClass("android/graphics/Region");
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SkASSERT(clazz);
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gRegion_nativeInstanceFieldID = env->GetFieldID(clazz, "mNativeRegion", "I");
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SkASSERT(gRegion_nativeInstanceFieldID);
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int result = android::AndroidRuntime::registerNativeMethods(env, "android/graphics/Region",
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gRegionMethods, SK_ARRAY_COUNT(gRegionMethods));
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if (result < 0)
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return result;
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return android::AndroidRuntime::registerNativeMethods(env, "android/graphics/RegionIterator",
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gRegionIterMethods, SK_ARRAY_COUNT(gRegionIterMethods));
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}
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