scribble/inc/ink.h Source File

00001 /*
00002  * This file is part of scribble.
00003  *
00004  * scribble is free software: you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation, either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * scribble is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program. If not, see <http://www.gnu.org/licenses/>.
00016  */
00017 
00023 #ifndef _INK_H
00024 #define _INK_H
00025 
00026 #ifdef __cplusplus
00027 extern "C"
00028 {
00029 #endif
00030 
00031 #include <gtk/gtk.h>
00032 
00033   typedef struct _Ink *PtrInk;
00034   typedef struct _Stroke *PtrStroke;
00035   typedef struct _InkPoint *PtrInkPoint;
00036 
00037   typedef struct _Ink
00038   {
00039     int nStrokes;
00040     PtrStroke firstStroke;
00041     PtrStroke lastStroke;
00042   } Ink;
00043 
00044 
00045   typedef struct _Stroke
00046   {
00047     //for defining the stroke area
00048     int min_x;
00049     int min_y;
00050     int max_x;
00051     int max_y;
00052 
00054     int iPenSize;
00055     GdkColor gdkColor;//only save it's rgb value
00056 
00057     int nPoints;
00058     PtrInkPoint firstPoint;
00059     PtrInkPoint lastPoint;
00060     PtrStroke nextStroke;
00061   } Stroke;
00062 
00063   typedef struct _InkPoint
00064   {
00065     int x;
00066     int y;
00067     PtrInkPoint nextPoint;
00068   } InkPoint;
00069 
00070   extern PtrInk construct_ink ();
00071   extern void destroy_ink (PtrInk ink);
00072 
00073   extern PtrStroke construct_stroke ();
00074   extern PtrStroke destroy_stroke (PtrStroke stroke);
00075 
00076   extern PtrInkPoint construct_point ();
00077   extern PtrInkPoint destroy_point (PtrInkPoint point);
00078 
00079   extern unsigned char ink_add_stroke (PtrInk ink, PtrStroke stroke);
00080   extern int get_num_of_strokes (PtrInk ink);
00081 
00082   extern unsigned char ink_add_point (PtrStroke stroke, PtrInkPoint point);
00083   extern int get_num_of_points (PtrStroke stroke);
00084   
00085 #ifdef __cplusplus
00086 }
00087 #endif
00088 
00089 #endif                          /* _INK_H */