1 /* 2 3 Canvas.h - public header file for the Canvas Widget 4 - a widget that allows programmer-specified refresh procedures. 5 Copyright (C) 1990,93,94 Robert H. Forsman Jr. 6 7 This library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Library General Public 9 License as published by the Free Software Foundation; either 10 version 2 of the License, or (at your option) any later version. 11 12 This library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Library General Public License for more details. 16 17 You should have received a copy of the GNU Library General Public 18 License along with this library; if not, write to the Free 19 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 21 */ 22 23 #ifndef _Canvas_h 24 #define _Canvas_h 25 26 #include <X11/Intrinsic.h> 27 #include <X11/Core.h> 28 29 #ifndef XtNexposeProc 30 #define XtNexposeProc "exposeProc" 31 #define XtCExposeProc "ExposeProc" 32 #endif 33 34 #ifndef XtNexposeProcData 35 #define XtNexposeProcData "exposeProcData" 36 #define XtCExposeProcData "ExposeProcData" 37 #endif 38 39 #ifndef XtNresizeProc 40 #define XtNresizeProc "resizeProc" 41 #define XtCResizeProc "ResizeProc" 42 #endif 43 44 #ifndef XtNresizeProcData 45 #define XtNresizeProcData "resizeProcData" 46 #define XtCResizeProcData "ResizeProcData" 47 #endif 48 49 #ifndef XtNvisual 50 #define XtNvisual "visual" 51 #define XtCVisual "Visual" 52 #endif 53 54 #ifndef XtNBackPixmap 55 #define XtNBackPixmap "backPixmap" 56 #define XtCBackPixmap "BackPixmap" 57 #endif 58 59 extern WidgetClass xfwfcanvasWidgetClass; 60 61 typedef struct _CanvasClassRec *CanvasWidgetClass; 62 typedef struct _CanvasRec *CanvasWidget; 63 64 typedef void(*XfwfCanvasExposeProc)( 65 #if NeedFunctionPrototypes 66 Widget w, 67 XExposeEvent *event, 68 Region region, 69 XtPointer client_data 70 #endif 71 ); 72 73 typedef void(*XfwfCanvasResizeProc)( 74 #if NeedFunctionPrototypes 75 Widget w, 76 XtPointer client_data 77 #endif 78 ); 79 80 Pixmap canvas_get_backpixmap(Widget w); 81 void canvas_copy_to_backpixmap(Widget w, Pixmap src); 82 void canvas_show(Widget w); 83 void canvas_hide(Widget w); 84 85 #endif /* _Canvas_h */ 86