R6.6 is the Xorg base-lineXORG-MAIN

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+/* $Xorg: BitmapP.h,v 1.4 2001/02/09 02:05:28 xorgcvs Exp $ */
+/*
+
+Copyright 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+/*
+ * Author:  Davor Matic, MIT X Consortium
+ */
+
+
+
+#ifndef _BitmapP_h
+#define _BitmapP_h
+
+#include "Bitmap.h"
+#include <X11/Xaw/SimpleP.h>
+
+typedef struct {
+    Atom           *targets;
+    Cardinal        num_targets;
+    BWRequestRec   *requests;
+    Cardinal        num_requests;
+    BWRequestRec   *request[100];
+  
+} BitmapClassPart;
+
+/* Full class record declaration */
+typedef struct _BitmapClassRec {
+  CoreClassPart          core_class;
+  SimpleClassPart        simple_class;
+  BitmapClassPart        bitmap_class;
+} BitmapClassRec;
+
+extern BitmapClassRec bitmapClassRec;
+
+/**********/
+struct _BWRequestRec {
+  char       *name;
+  int         status_size;
+  void      (*engage)();
+  XtPointer   engage_client_data;
+  void      (*terminate)();
+  XtPointer   terminate_client_data;
+  void      (*remove)();
+  XtPointer   remove_client_data;
+} ;
+
+typedef struct {
+  Position from_x, from_y,
+           to_x, to_y;
+} BWArea;
+
+typedef struct {
+    BWRequestRec *request;
+    XtPointer     status;
+    Boolean       trap;
+    XtPointer     call_data;
+} BWRequestStack;
+
+typedef struct {
+    XImage   *image, *buffer;
+    XPoint    hot;
+    Position  at_x, at_y;
+    Boolean   fold;
+    Boolean   grid;
+    Boolean   changed;
+} BWZoom;
+
+typedef struct {
+    Boolean   own;
+    Boolean   limbo;
+} BWSelection;
+
+/* New fields for the Bitmap widget record */
+typedef struct {
+  /* resources */
+  Pixel            foreground_pixel;
+  Pixel            highlight_pixel;
+  Pixel            frame_pixel;
+  Pixmap           stipple;
+  Boolean          stippled;
+  Boolean          proportional;
+  Boolean          grid;
+  Dimension        grid_tolerance;
+  Pixmap           dashes;
+  Boolean          dashed;
+  Boolean          axes;
+  Boolean          resize;
+  Dimension        margin, squareW, squareH, width, height;
+  XPoint           hot;
+  int              button_function[5];
+  String           filename, basename;
+  /* private state */
+  String           size;
+  Position         horizOffset, vertOffset;
+  void           (*notify)();
+  BWRequestStack  *request_stack;
+  Cardinal         cardinal, current;
+  /*Boolean          trapping;*/
+  XImage          *image, *buffer, *storage;
+  XPoint           buffer_hot;
+  BWArea           mark, buffer_mark;
+  GC               drawing_gc;
+  GC               highlighting_gc;
+  GC               frame_gc;
+  GC               axes_gc;
+  Boolean          changed;
+  Boolean          fold;
+  Boolean          zooming;
+  BWZoom           zoom;
+  XtPointer        *value;
+  char             status[80];
+  BWSelection      selection;
+  Boolean          stipple_change_expose_event;
+} BitmapPart;
+
+/* Full instance record declaration */
+typedef struct _BitmapRec {
+  CorePart      core;
+  SimplePart    simple;
+  BitmapPart    bitmap;
+} BitmapRec;
+
+/* Private functions */
+
+#define Length(width, height)\
+        (((int)(width) + 7) / 8 * (height))
+
+#define InBitmapX(BW, x)\
+	(Position)(min((Position)((Dimension)(max(BW->bitmap.horizOffset,x)  -\
+				   BW->bitmap.horizOffset) /\
+				   BW->bitmap.squareW), BW->bitmap.width - 1))
+    
+#define InBitmapY(BW, y)\
+	(Position)(min((Position)((Dimension)(max(BW->bitmap.vertOffset, y)  -\
+				   BW->bitmap.vertOffset) /\
+				   BW->bitmap.squareH), BW->bitmap.height - 1))
+    
+#define InWindowX(BW, x)\
+	(Position) (BW->bitmap.horizOffset + ((x) * BW->bitmap.squareW))
+
+#define InWindowY(BW, y)\
+	(Position) (BW->bitmap.vertOffset + ((y) * BW->bitmap.squareH))
+     
+#define GetPixmap(BW, image)\
+    XCreateBitmapFromData(XtDisplay(BW), XtWindow(BW),\
+			  image->data, image->width, image->height)
+
+
+#define QuerySet(x, y) (((x) != NotSet) && ((y) != NotSet))
+
+#define bit int
+
+#define QueryZero(x, y) (((x) == 0) || ((y) == 0))
+
+#define Swap(x, y) {Position t; t = x; x = y; y = t;}
+
+#define QuerySwap(x, y) if(x > y) Swap(x, y)
+
+#define QueryInBitmap(BW, x, y)\
+  (((x) >= 0) && ((x) < BW->bitmap.image->width) &&\
+   ((y) >= 0) && ((y) < BW->bitmap.image->height))
+
+#define Value(BW, button)   (BW->bitmap.button_function[button - 1])
+
+#define CreateCleanData(length) XtCalloc(length, sizeof(char))
+XImage *CreateBitmapImage();
+void DestroyBitmapImage();
+
+#endif /* _BitmapP_h */