| /* |
| * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "jni_util.h" |
| |
| #include "GraphicsPrimitiveMgr.h" |
| #include "LineUtils.h" |
| |
| #include "sun_java2d_loops_DrawPolygons.h" |
| |
| static void |
| RefineBounds(SurfaceDataBounds *bounds, jint transX, jint transY, |
| jint *xPointsPtr, jint *yPointsPtr, jint pointsNeeded) |
| { |
| jint xmin, ymin, xmax, ymax; |
| if (pointsNeeded > 0) { |
| xmin = xmax = transX + *xPointsPtr++; |
| ymin = ymax = transY + *yPointsPtr++; |
| while (--pointsNeeded > 0) { |
| jint x = transX + *xPointsPtr++; |
| jint y = transY + *yPointsPtr++; |
| if (xmin > x) xmin = x; |
| if (ymin > y) ymin = y; |
| if (xmax < x) xmax = x; |
| if (ymax < y) ymax = y; |
| } |
| if (++xmax < xmin) xmax--; |
| if (++ymax < ymin) ymax--; |
| if (bounds->x1 < xmin) bounds->x1 = xmin; |
| if (bounds->y1 < ymin) bounds->y1 = ymin; |
| if (bounds->x2 > xmax) bounds->x2 = xmax; |
| if (bounds->y2 > ymax) bounds->y2 = ymax; |
| } else { |
| bounds->x2 = bounds->x1; |
| bounds->y2 = bounds->y1; |
| } |
| } |
| |
| static void |
| ProcessPoly(SurfaceDataRasInfo *pRasInfo, |
| DrawLineFunc *pLine, |
| NativePrimitive *pPrim, |
| CompositeInfo *pCompInfo, |
| jint pixel, jint transX, jint transY, |
| jint *xPointsPtr, jint *yPointsPtr, |
| jint *nPointsPtr, jint numPolys, |
| jboolean close) |
| { |
| int i; |
| for (i = 0; i < numPolys; i++) { |
| jint numPts = nPointsPtr[i]; |
| if (numPts > 1) { |
| jint x0, y0, x1, y1; |
| jboolean empty = JNI_TRUE; |
| x0 = x1 = transX + *xPointsPtr++; |
| y0 = y1 = transY + *yPointsPtr++; |
| while (--numPts > 0) { |
| jint x2 = transX + *xPointsPtr++; |
| jint y2 = transY + *yPointsPtr++; |
| empty = (empty && x1 == x2 && y1 == y2); |
| LineUtils_ProcessLine(pRasInfo, pixel, pLine, |
| pPrim, pCompInfo, |
| x1, y1, x2, y2, |
| (numPts > 1 || close)); |
| x1 = x2; |
| y1 = y2; |
| } |
| if (close && (empty || x1 != x0 || y1 != y0)) { |
| LineUtils_ProcessLine(pRasInfo, pixel, pLine, |
| pPrim, pCompInfo, |
| x1, y1, x0, y0, !empty); |
| } |
| } else if (numPts == 1) { |
| xPointsPtr++; |
| yPointsPtr++; |
| } |
| } |
| } |
| |
| /* |
| * Class: sun_java2d_loops_DrawPolygons |
| * Method: DrawPolygons |
| * Signature: (Lsun/java2d/SunGraphics2D;Lsun/java2d/SurfaceData;[I[I[IIIIZ)V |
| */ |
| JNIEXPORT void JNICALL |
| Java_sun_java2d_loops_DrawPolygons_DrawPolygons |
| (JNIEnv *env, jobject self, |
| jobject sg2d, jobject sData, |
| jintArray xPointsArray, jintArray yPointsArray, |
| jintArray nPointsArray, jint numPolys, |
| jint transX, jint transY, jboolean close) |
| { |
| SurfaceDataOps *sdOps; |
| SurfaceDataRasInfo rasInfo; |
| NativePrimitive *pPrim; |
| CompositeInfo compInfo; |
| jsize nPointsLen, xPointsLen, yPointsLen; |
| jint *nPointsPtr = NULL; |
| jint *xPointsPtr = NULL; |
| jint *yPointsPtr = NULL; |
| jint pointsNeeded; |
| jint i, ret; |
| jboolean ok = JNI_TRUE; |
| jint pixel = GrPrim_Sg2dGetPixel(env, sg2d); |
| |
| if (JNU_IsNull(env, xPointsArray) || JNU_IsNull(env, yPointsArray)) { |
| JNU_ThrowNullPointerException(env, "coordinate array"); |
| return; |
| } |
| if (JNU_IsNull(env, nPointsArray)) { |
| JNU_ThrowNullPointerException(env, "polygon length array"); |
| return; |
| } |
| |
| nPointsLen = (*env)->GetArrayLength(env, nPointsArray); |
| xPointsLen = (*env)->GetArrayLength(env, xPointsArray); |
| yPointsLen = (*env)->GetArrayLength(env, yPointsArray); |
| if (nPointsLen < numPolys) { |
| JNU_ThrowArrayIndexOutOfBoundsException(env, |
| "polygon length array size"); |
| return; |
| } |
| |
| pPrim = GetNativePrim(env, self); |
| if (pPrim == NULL) { |
| return; |
| } |
| if (pPrim->pCompType->getCompInfo != NULL) { |
| GrPrim_Sg2dGetCompInfo(env, sg2d, pPrim, &compInfo); |
| } |
| |
| sdOps = SurfaceData_GetOps(env, sData); |
| if (sdOps == 0) { |
| return; |
| } |
| |
| GrPrim_Sg2dGetClip(env, sg2d, &rasInfo.bounds); |
| |
| ret = sdOps->Lock(env, sdOps, &rasInfo, SD_LOCK_FASTEST | pPrim->dstflags); |
| if (ret == SD_FAILURE) { |
| return; |
| } |
| |
| nPointsPtr = (*env)->GetPrimitiveArrayCritical(env, nPointsArray, NULL); |
| if (!nPointsPtr) { |
| ok = JNI_FALSE; |
| } |
| |
| if (ok) { |
| pointsNeeded = 0; |
| for (i = 0; i < numPolys; i++) { |
| if (nPointsPtr[i] > 0) { |
| pointsNeeded += nPointsPtr[i]; |
| } |
| } |
| |
| if (yPointsLen < pointsNeeded || xPointsLen < pointsNeeded) { |
| (*env)->ReleasePrimitiveArrayCritical(env, nPointsArray, |
| nPointsPtr, JNI_ABORT); |
| SurfaceData_InvokeUnlock(env, sdOps, &rasInfo); |
| JNU_ThrowArrayIndexOutOfBoundsException(env, |
| "coordinate array length"); |
| return; |
| } |
| |
| xPointsPtr = (*env)->GetPrimitiveArrayCritical(env, xPointsArray, NULL); |
| if (!xPointsPtr) { |
| ok = JNI_FALSE; |
| } |
| if (ok) { |
| yPointsPtr = (*env)->GetPrimitiveArrayCritical(env, yPointsArray, NULL); |
| if (!yPointsPtr) { |
| ok = JNI_FALSE; |
| } |
| } |
| } |
| |
| if (ok) { |
| if (ret == SD_SLOWLOCK) { |
| RefineBounds(&rasInfo.bounds, transX, transY, |
| xPointsPtr, yPointsPtr, pointsNeeded); |
| ok = (rasInfo.bounds.x2 > rasInfo.bounds.x1 && |
| rasInfo.bounds.y2 > rasInfo.bounds.y1); |
| } |
| } |
| |
| if (ok) { |
| sdOps->GetRasInfo(env, sdOps, &rasInfo); |
| if (rasInfo.rasBase && |
| rasInfo.bounds.x2 > rasInfo.bounds.x1 && |
| rasInfo.bounds.y2 > rasInfo.bounds.y1) |
| { |
| ProcessPoly(&rasInfo, pPrim->funcs.drawline, pPrim, &compInfo, |
| pixel, transX, transY, |
| xPointsPtr, yPointsPtr, |
| nPointsPtr, numPolys, |
| close); |
| } |
| SurfaceData_InvokeRelease(env, sdOps, &rasInfo); |
| } |
| |
| if (nPointsPtr) { |
| (*env)->ReleasePrimitiveArrayCritical(env, nPointsArray, |
| nPointsPtr, JNI_ABORT); |
| } |
| if (xPointsPtr) { |
| (*env)->ReleasePrimitiveArrayCritical(env, xPointsArray, |
| xPointsPtr, JNI_ABORT); |
| } |
| if (yPointsPtr) { |
| (*env)->ReleasePrimitiveArrayCritical(env, yPointsArray, |
| yPointsPtr, JNI_ABORT); |
| } |
| SurfaceData_InvokeUnlock(env, sdOps, &rasInfo); |
| } |