| /* |
| * Copyright (c) 2007, 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. |
| */ |
| |
| #ifndef _Included_PathConsumer2D |
| #define _Included_PathConsumer2D |
| |
| /* For forward referencing - struct defined below. */ |
| struct _PathConsumerVec; |
| |
| /* |
| * Note on Error Conditions: |
| * The following functions all return true on an error condition which |
| * precludes any further processing. The module calling these functions |
| * should cease the operation and invoke its own error handling. |
| * The return value is the only indication of the error, no exceptions |
| * should be thrown by the consumer - the caller is solely responsible |
| * for reporting the error/exception. |
| * The most common cause of failure is an allocation failure so a |
| * true return code could be reported as an "out of memory" error |
| * if so desired. |
| * No cleanup of the native consumer is required upon either a successful |
| * completion of the path or upon an error return. Such cleanup will |
| * be handled elsewhere via other mechanisms (finalization, try/finally, |
| * etc.) |
| */ |
| |
| /* See GeneralPath.moveTo - returns true on error condition. */ |
| typedef jboolean (MoveToFunc)(struct _PathConsumerVec *pVec, |
| jfloat x0, jfloat y0); |
| /* See GeneralPath.lineTo - returns true on error condition. */ |
| typedef jboolean (LineToFunc)(struct _PathConsumerVec *pVec, |
| jfloat x1, jfloat y1); |
| /* See GeneralPath.quadTo - returns true on error condition. */ |
| typedef jboolean (QuadToFunc)(struct _PathConsumerVec *pVec, |
| jfloat xm, jfloat ym, |
| jfloat x1, jfloat y1); |
| /* See GeneralPath.curveTo - returns true on error condition. */ |
| typedef jboolean (CubicToFunc)(struct _PathConsumerVec *pVec, |
| jfloat xm0, jfloat ym0, |
| jfloat xm1, jfloat ym1, |
| jfloat x1, jfloat y1); |
| /* See GeneralPath.closePath - returns true on error condition. */ |
| typedef jboolean (ClosePathFunc)(struct _PathConsumerVec *pVec); |
| |
| /* |
| * This function must be called after the last segment of the last |
| * subpath is sent to the above methods. No further calls should |
| * be made to any of the PathConsumerVec functions subsequently. |
| */ |
| typedef jboolean (PathDoneFunc)(struct _PathConsumerVec *pVec); |
| |
| /* |
| * This structure defines the list of function pointers for implementations |
| * of the above specified functions. A pointer to this structure is also |
| * handed to each function as its first parameter. If the implementation |
| * needs private context-specific data then it can be stored adjacent to |
| * the PathConsumerVec structure in the same allocated storage. |
| */ |
| typedef struct _PathConsumerVec { |
| MoveToFunc *moveTo; |
| LineToFunc *lineTo; |
| QuadToFunc *quadTo; |
| CubicToFunc *cubicTo; |
| ClosePathFunc *closePath; |
| PathDoneFunc *pathDone; |
| } PathConsumerVec; |
| |
| #endif |