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authordgp <dgp@users.sourceforge.net>2007-06-25 19:07:15 (GMT)
committerdgp <dgp@users.sourceforge.net>2007-06-25 19:07:15 (GMT)
commitee8638e6bb4be27be17fd6df3038e429415a5d9e (patch)
tree9201df30dd089db1ee84a16777009f99b2b6dfa5 /generic/tkCanvas.h
parentfebfc914b27e096b01315b934df1057d64ffa5cc (diff)
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diff --git a/generic/tkCanvas.h b/generic/tkCanvas.h
index cdda4d4..d454317 100644
--- a/generic/tkCanvas.h
+++ b/generic/tkCanvas.h
@@ -1,308 +1,308 @@
-/*
- * tkCanvas.h --
- *
- * Declarations shared among all the files that implement canvas widgets.
- *
- * Copyright (c) 1991-1994 The Regents of the University of California.
- * Copyright (c) 1994-1995 Sun Microsystems, Inc.
- * Copyright (c) 1998 by Scriptics Corporation.
- *
- * See the file "license.terms" for information on usage and redistribution of
- * this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tkCanvas.h,v 1.11 2007/06/24 16:09:25 dkf Exp $
- */
-
-#ifndef _TKCANVAS
-#define _TKCANVAS
-
-#ifndef _TK
-#include "tk.h"
-#endif
-
-#ifndef USE_OLD_TAG_SEARCH
-typedef struct TagSearchExpr_s TagSearchExpr;
-
-struct TagSearchExpr_s {
- TagSearchExpr *next; /* For linked lists of expressions - used in
- * bindings. */
- Tk_Uid uid; /* The uid of the whole expression. */
- Tk_Uid *uids; /* Expresion compiled to an array of uids. */
- int allocated; /* Available space for array of uids. */
- int length; /* Length of expression. */
- int index; /* Current position in expression
- * evaluation. */
- int match; /* This expression matches event's item's
- * tags. */
-};
-#endif /* not USE_OLD_TAG_SEARCH */
-
-/*
- * The record below describes a canvas widget. It is made available to the
- * item functions so they can access certain shared fields such as the overall
- * displacement and scale factor for the canvas.
- */
-
-typedef struct TkCanvas {
- Tk_Window tkwin; /* Window that embodies the canvas. NULL means
- * that the window has been destroyed but the
- * data structures haven't yet been cleaned
- * up.*/
- Display *display; /* Display containing widget; needed, among
- * other things, to release resources after
- * tkwin has already gone away. */
- Tcl_Interp *interp; /* Interpreter associated with canvas. */
- Tcl_Command widgetCmd; /* Token for canvas's widget command. */
- Tk_Item *firstItemPtr; /* First in list of all items in canvas, or
- * NULL if canvas empty. */
- Tk_Item *lastItemPtr; /* Last in list of all items in canvas, or
- * NULL if canvas empty. */
-
- /*
- * Information used when displaying widget:
- */
-
- int borderWidth; /* Width of 3-D border around window. */
- Tk_3DBorder bgBorder; /* Used for canvas background. */
- int relief; /* Indicates whether window as a whole is
- * raised, sunken, or flat. */
- int highlightWidth; /* Width in pixels of highlight to draw around
- * widget when it has the focus. <= 0 means
- * don't draw a highlight. */
- XColor *highlightBgColorPtr;
- /* Color for drawing traversal highlight area
- * when highlight is off. */
- XColor *highlightColorPtr; /* Color for drawing traversal highlight. */
- int inset; /* Total width of all borders, including
- * traversal highlight and 3-D border.
- * Indicates how much interior stuff must be
- * offset from outside edges to leave room for
- * borders. */
- GC pixmapGC; /* Used to copy bits from a pixmap to the
- * screen and also to clear the pixmap. */
- int width, height; /* Dimensions to request for canvas window,
- * specified in pixels. */
- int redrawX1, redrawY1; /* Upper left corner of area to redraw, in
- * pixel coordinates. Border pixels are
- * included. Only valid if REDRAW_PENDING flag
- * is set. */
- int redrawX2, redrawY2; /* Lower right corner of area to redraw, in
- * integer canvas coordinates. Border pixels
- * will *not* be redrawn. */
- int confine; /* Non-zero means constrain view to keep as
- * much of canvas visible as possible. */
-
- /*
- * Information used to manage the selection and insertion cursor:
- */
-
- Tk_CanvasTextInfo textInfo; /* Contains lots of fields; see tk.h for
- * details. This structure is shared with the
- * code that implements individual items. */
- int insertOnTime; /* Number of milliseconds cursor should spend
- * in "on" state for each blink. */
- int insertOffTime; /* Number of milliseconds cursor should spend
- * in "off" state for each blink. */
- Tcl_TimerToken insertBlinkHandler;
- /* Timer handler used to blink cursor on and
- * off. */
-
- /*
- * Transformation applied to canvas as a whole: to compute screen
- * coordinates (X,Y) from canvas coordinates (x,y), do the following:
- *
- * X = x - xOrigin;
- * Y = y - yOrigin;
- */
-
- int xOrigin, yOrigin; /* Canvas coordinates corresponding to
- * upper-left corner of window, given in
- * canvas pixel units. */
- int drawableXOrigin, drawableYOrigin;
- /* During redisplay, these fields give the
- * canvas coordinates corresponding to the
- * upper-left corner of the drawable where
- * items are actually being drawn (typically a
- * pixmap smaller than the whole window). */
-
- /*
- * Information used for event bindings associated with items.
- */
-
- Tk_BindingTable bindingTable;
- /* Table of all bindings currently defined for
- * this canvas. NULL means that no bindings
- * exist, so the table hasn't been created.
- * Each "object" used for this table is either
- * a Tk_Uid for a tag or the address of an
- * item named by id. */
- Tk_Item *currentItemPtr; /* The item currently containing the mouse
- * pointer, or NULL if none. */
- Tk_Item *newCurrentPtr; /* The item that is about to become the
- * current one, or NULL. This field is used to
- * detect deletions of the new current item
- * pointer that occur during Leave processing
- * of the previous current item. */
- double closeEnough; /* The mouse is assumed to be inside an item
- * if it is this close to it. */
- XEvent pickEvent; /* The event upon which the current choice of
- * currentItem is based. Must be saved so that
- * if the currentItem is deleted, can pick
- * another. */
- int state; /* Last known modifier state. Used to defer
- * picking a new current object while buttons
- * are down. */
-
- /*
- * Information used for managing scrollbars:
- */
-
- char *xScrollCmd; /* Command prefix for communicating with
- * horizontal scrollbar. NULL means no
- * horizontal scrollbar. Malloc'ed. */
- char *yScrollCmd; /* Command prefix for communicating with
- * vertical scrollbar. NULL means no vertical
- * scrollbar. Malloc'ed. */
- int scrollX1, scrollY1, scrollX2, scrollY2;
- /* These four coordinates define the region
- * that is the 100% area for scrolling (i.e.
- * these numbers determine the size and
- * location of the sliders on scrollbars).
- * Units are pixels in canvas coords. */
- char *regionString; /* The option string from which scrollX1 etc.
- * are derived. Malloc'ed. */
- int xScrollIncrement; /* If >0, defines a grid for horizontal
- * scrolling. This is the size of the "unit",
- * and the left edge of the screen will always
- * lie on an even unit boundary. */
- int yScrollIncrement; /* If >0, defines a grid for horizontal
- * scrolling. This is the size of the "unit",
- * and the left edge of the screen will always
- * lie on an even unit boundary. */
-
- /*
- * Information used for scanning:
- */
-
- int scanX; /* X-position at which scan started (e.g.
- * button was pressed here). */
- int scanXOrigin; /* Value of xOrigin field when scan started. */
- int scanY; /* Y-position at which scan started (e.g.
- * button was pressed here). */
- int scanYOrigin; /* Value of yOrigin field when scan started. */
-
- /*
- * Information used to speed up searches by remembering the last item
- * created or found with an item id search.
- */
-
- Tk_Item *hotPtr; /* Pointer to "hot" item (one that's been
- * recently used. NULL means there's no hot
- * item. */
- Tk_Item *hotPrevPtr; /* Pointer to predecessor to hotPtr (NULL
- * means item is first in list). This is only
- * a hint and may not really be hotPtr's
- * predecessor. */
-
- /*
- * Miscellaneous information:
- */
-
- Tk_Cursor cursor; /* Current cursor for window, or None. */
- char *takeFocus; /* Value of -takefocus option; not used in the
- * C code, but used by keyboard traversal
- * scripts. Malloc'ed, but may be NULL. */
- double pixelsPerMM; /* Scale factor between MM and pixels; used
- * when converting coordinates. */
- int flags; /* Various flags; see below for
- * definitions. */
- int nextId; /* Number to use as id for next item created
- * in widget. */
- Tk_PostscriptInfo psInfo; /* Pointer to information used for generating
- * Postscript for the canvas. NULL means no
- * Postscript is currently being generated. */
- Tcl_HashTable idTable; /* Table of integer indices. */
-
- /*
- * Additional information, added by the 'dash'-patch
- */
-
- void *reserved1;
- Tk_State canvas_state; /* State of canvas. */
- void *reserved2;
- void *reserved3;
- Tk_TSOffset tsoffset;
-#ifndef USE_OLD_TAG_SEARCH
- TagSearchExpr *bindTagExprs;/* Linked list of tag expressions used in
- * bindings. */
-#endif
-} TkCanvas;
-
-/*
- * Flag bits for canvases:
- *
- * REDRAW_PENDING - 1 means a DoWhenIdle handler has already been
- * created to redraw some or all of the canvas.
- * REDRAW_BORDERS - 1 means that the borders need to be redrawn
- * during the next redisplay operation.
- * REPICK_NEEDED - 1 means DisplayCanvas should pick a new
- * current item before redrawing the canvas.
- * GOT_FOCUS - 1 means the focus is currently in this widget,
- * so should draw the insertion cursor and
- * traversal highlight.
- * CURSOR_ON - 1 means the insertion cursor is in the "on"
- * phase of its blink cycle. 0 means either we
- * don't have the focus or the cursor is in the
- * "off" phase of its cycle.
- * UPDATE_SCROLLBARS - 1 means the scrollbars should get updated as
- * part of the next display operation.
- * LEFT_GRABBED_ITEM - 1 means that the mouse left the current item
- * while a grab was in effect, so we didn't
- * change canvasPtr->currentItemPtr.
- * REPICK_IN_PROGRESS - 1 means PickCurrentItem is currently
- * executing. If it should be called recursively,
- * it should simply return immediately.
- * BBOX_NOT_EMPTY - 1 means that the bounding box of the area that
- * should be redrawn is not empty.
- */
-
-#define REDRAW_PENDING 1
-#define REDRAW_BORDERS 2
-#define REPICK_NEEDED 4
-#define GOT_FOCUS 8
-#define CURSOR_ON 0x10
-#define UPDATE_SCROLLBARS 0x20
-#define LEFT_GRABBED_ITEM 0x40
-#define REPICK_IN_PROGRESS 0x100
-#define BBOX_NOT_EMPTY 0x200
-
-/*
- * Flag bits for canvas items (redraw_flags):
- *
- * FORCE_REDRAW - 1 means that the new coordinates of some item
- * are not yet registered using
- * Tk_CanvasEventuallyRedraw(). It should still
- * be done by the general canvas code.
- */
-
-#define FORCE_REDRAW 8
-
-/*
- * Canvas-related functions that are shared among Tk modules but not exported
- * to the outside world:
- */
-
-MODULE_SCOPE int TkCanvPostscriptCmd(TkCanvas *canvasPtr,
- Tcl_Interp *interp, int argc, CONST char **argv);
-MODULE_SCOPE int TkCanvTranslatePath(TkCanvas *canvPtr,
- int numVertex, double *coordPtr, int closed,
- XPoint *outPtr);
-/*
- * Standard item types provided by Tk:
- */
-
-MODULE_SCOPE Tk_ItemType tkArcType, tkBitmapType, tkImageType, tkLineType;
-MODULE_SCOPE Tk_ItemType tkOvalType, tkPolygonType;
-MODULE_SCOPE Tk_ItemType tkRectangleType, tkTextType, tkWindowType;
-
-#endif /* _TKCANVAS */
+/*
+ * tkCanvas.h --
+ *
+ * Declarations shared among all the files that implement canvas widgets.
+ *
+ * Copyright (c) 1991-1994 The Regents of the University of California.
+ * Copyright (c) 1994-1995 Sun Microsystems, Inc.
+ * Copyright (c) 1998 by Scriptics Corporation.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * RCS: @(#) $Id: tkCanvas.h,v 1.12 2007/06/25 19:07:15 dgp Exp $
+ */
+
+#ifndef _TKCANVAS
+#define _TKCANVAS
+
+#ifndef _TK
+#include "tk.h"
+#endif
+
+#ifndef USE_OLD_TAG_SEARCH
+typedef struct TagSearchExpr_s TagSearchExpr;
+
+struct TagSearchExpr_s {
+ TagSearchExpr *next; /* For linked lists of expressions - used in
+ * bindings. */
+ Tk_Uid uid; /* The uid of the whole expression. */
+ Tk_Uid *uids; /* Expresion compiled to an array of uids. */
+ int allocated; /* Available space for array of uids. */
+ int length; /* Length of expression. */
+ int index; /* Current position in expression
+ * evaluation. */
+ int match; /* This expression matches event's item's
+ * tags. */
+};
+#endif /* not USE_OLD_TAG_SEARCH */
+
+/*
+ * The record below describes a canvas widget. It is made available to the
+ * item functions so they can access certain shared fields such as the overall
+ * displacement and scale factor for the canvas.
+ */
+
+typedef struct TkCanvas {
+ Tk_Window tkwin; /* Window that embodies the canvas. NULL means
+ * that the window has been destroyed but the
+ * data structures haven't yet been cleaned
+ * up.*/
+ Display *display; /* Display containing widget; needed, among
+ * other things, to release resources after
+ * tkwin has already gone away. */
+ Tcl_Interp *interp; /* Interpreter associated with canvas. */
+ Tcl_Command widgetCmd; /* Token for canvas's widget command. */
+ Tk_Item *firstItemPtr; /* First in list of all items in canvas, or
+ * NULL if canvas empty. */
+ Tk_Item *lastItemPtr; /* Last in list of all items in canvas, or
+ * NULL if canvas empty. */
+
+ /*
+ * Information used when displaying widget:
+ */
+
+ int borderWidth; /* Width of 3-D border around window. */
+ Tk_3DBorder bgBorder; /* Used for canvas background. */
+ int relief; /* Indicates whether window as a whole is
+ * raised, sunken, or flat. */
+ int highlightWidth; /* Width in pixels of highlight to draw around
+ * widget when it has the focus. <= 0 means
+ * don't draw a highlight. */
+ XColor *highlightBgColorPtr;
+ /* Color for drawing traversal highlight area
+ * when highlight is off. */
+ XColor *highlightColorPtr; /* Color for drawing traversal highlight. */
+ int inset; /* Total width of all borders, including
+ * traversal highlight and 3-D border.
+ * Indicates how much interior stuff must be
+ * offset from outside edges to leave room for
+ * borders. */
+ GC pixmapGC; /* Used to copy bits from a pixmap to the
+ * screen and also to clear the pixmap. */
+ int width, height; /* Dimensions to request for canvas window,
+ * specified in pixels. */
+ int redrawX1, redrawY1; /* Upper left corner of area to redraw, in
+ * pixel coordinates. Border pixels are
+ * included. Only valid if REDRAW_PENDING flag
+ * is set. */
+ int redrawX2, redrawY2; /* Lower right corner of area to redraw, in
+ * integer canvas coordinates. Border pixels
+ * will *not* be redrawn. */
+ int confine; /* Non-zero means constrain view to keep as
+ * much of canvas visible as possible. */
+
+ /*
+ * Information used to manage the selection and insertion cursor:
+ */
+
+ Tk_CanvasTextInfo textInfo; /* Contains lots of fields; see tk.h for
+ * details. This structure is shared with the
+ * code that implements individual items. */
+ int insertOnTime; /* Number of milliseconds cursor should spend
+ * in "on" state for each blink. */
+ int insertOffTime; /* Number of milliseconds cursor should spend
+ * in "off" state for each blink. */
+ Tcl_TimerToken insertBlinkHandler;
+ /* Timer handler used to blink cursor on and
+ * off. */
+
+ /*
+ * Transformation applied to canvas as a whole: to compute screen
+ * coordinates (X,Y) from canvas coordinates (x,y), do the following:
+ *
+ * X = x - xOrigin;
+ * Y = y - yOrigin;
+ */
+
+ int xOrigin, yOrigin; /* Canvas coordinates corresponding to
+ * upper-left corner of window, given in
+ * canvas pixel units. */
+ int drawableXOrigin, drawableYOrigin;
+ /* During redisplay, these fields give the
+ * canvas coordinates corresponding to the
+ * upper-left corner of the drawable where
+ * items are actually being drawn (typically a
+ * pixmap smaller than the whole window). */
+
+ /*
+ * Information used for event bindings associated with items.
+ */
+
+ Tk_BindingTable bindingTable;
+ /* Table of all bindings currently defined for
+ * this canvas. NULL means that no bindings
+ * exist, so the table hasn't been created.
+ * Each "object" used for this table is either
+ * a Tk_Uid for a tag or the address of an
+ * item named by id. */
+ Tk_Item *currentItemPtr; /* The item currently containing the mouse
+ * pointer, or NULL if none. */
+ Tk_Item *newCurrentPtr; /* The item that is about to become the
+ * current one, or NULL. This field is used to
+ * detect deletions of the new current item
+ * pointer that occur during Leave processing
+ * of the previous current item. */
+ double closeEnough; /* The mouse is assumed to be inside an item
+ * if it is this close to it. */
+ XEvent pickEvent; /* The event upon which the current choice of
+ * currentItem is based. Must be saved so that
+ * if the currentItem is deleted, can pick
+ * another. */
+ int state; /* Last known modifier state. Used to defer
+ * picking a new current object while buttons
+ * are down. */
+
+ /*
+ * Information used for managing scrollbars:
+ */
+
+ char *xScrollCmd; /* Command prefix for communicating with
+ * horizontal scrollbar. NULL means no
+ * horizontal scrollbar. Malloc'ed. */
+ char *yScrollCmd; /* Command prefix for communicating with
+ * vertical scrollbar. NULL means no vertical
+ * scrollbar. Malloc'ed. */
+ int scrollX1, scrollY1, scrollX2, scrollY2;
+ /* These four coordinates define the region
+ * that is the 100% area for scrolling (i.e.
+ * these numbers determine the size and
+ * location of the sliders on scrollbars).
+ * Units are pixels in canvas coords. */
+ char *regionString; /* The option string from which scrollX1 etc.
+ * are derived. Malloc'ed. */
+ int xScrollIncrement; /* If >0, defines a grid for horizontal
+ * scrolling. This is the size of the "unit",
+ * and the left edge of the screen will always
+ * lie on an even unit boundary. */
+ int yScrollIncrement; /* If >0, defines a grid for horizontal
+ * scrolling. This is the size of the "unit",
+ * and the left edge of the screen will always
+ * lie on an even unit boundary. */
+
+ /*
+ * Information used for scanning:
+ */
+
+ int scanX; /* X-position at which scan started (e.g.
+ * button was pressed here). */
+ int scanXOrigin; /* Value of xOrigin field when scan started. */
+ int scanY; /* Y-position at which scan started (e.g.
+ * button was pressed here). */
+ int scanYOrigin; /* Value of yOrigin field when scan started. */
+
+ /*
+ * Information used to speed up searches by remembering the last item
+ * created or found with an item id search.
+ */
+
+ Tk_Item *hotPtr; /* Pointer to "hot" item (one that's been
+ * recently used. NULL means there's no hot
+ * item. */
+ Tk_Item *hotPrevPtr; /* Pointer to predecessor to hotPtr (NULL
+ * means item is first in list). This is only
+ * a hint and may not really be hotPtr's
+ * predecessor. */
+
+ /*
+ * Miscellaneous information:
+ */
+
+ Tk_Cursor cursor; /* Current cursor for window, or None. */
+ char *takeFocus; /* Value of -takefocus option; not used in the
+ * C code, but used by keyboard traversal
+ * scripts. Malloc'ed, but may be NULL. */
+ double pixelsPerMM; /* Scale factor between MM and pixels; used
+ * when converting coordinates. */
+ int flags; /* Various flags; see below for
+ * definitions. */
+ int nextId; /* Number to use as id for next item created
+ * in widget. */
+ Tk_PostscriptInfo psInfo; /* Pointer to information used for generating
+ * Postscript for the canvas. NULL means no
+ * Postscript is currently being generated. */
+ Tcl_HashTable idTable; /* Table of integer indices. */
+
+ /*
+ * Additional information, added by the 'dash'-patch
+ */
+
+ void *reserved1;
+ Tk_State canvas_state; /* State of canvas. */
+ void *reserved2;
+ void *reserved3;
+ Tk_TSOffset tsoffset;
+#ifndef USE_OLD_TAG_SEARCH
+ TagSearchExpr *bindTagExprs;/* Linked list of tag expressions used in
+ * bindings. */
+#endif
+} TkCanvas;
+
+/*
+ * Flag bits for canvases:
+ *
+ * REDRAW_PENDING - 1 means a DoWhenIdle handler has already been
+ * created to redraw some or all of the canvas.
+ * REDRAW_BORDERS - 1 means that the borders need to be redrawn
+ * during the next redisplay operation.
+ * REPICK_NEEDED - 1 means DisplayCanvas should pick a new
+ * current item before redrawing the canvas.
+ * GOT_FOCUS - 1 means the focus is currently in this widget,
+ * so should draw the insertion cursor and
+ * traversal highlight.
+ * CURSOR_ON - 1 means the insertion cursor is in the "on"
+ * phase of its blink cycle. 0 means either we
+ * don't have the focus or the cursor is in the
+ * "off" phase of its cycle.
+ * UPDATE_SCROLLBARS - 1 means the scrollbars should get updated as
+ * part of the next display operation.
+ * LEFT_GRABBED_ITEM - 1 means that the mouse left the current item
+ * while a grab was in effect, so we didn't
+ * change canvasPtr->currentItemPtr.
+ * REPICK_IN_PROGRESS - 1 means PickCurrentItem is currently
+ * executing. If it should be called recursively,
+ * it should simply return immediately.
+ * BBOX_NOT_EMPTY - 1 means that the bounding box of the area that
+ * should be redrawn is not empty.
+ */
+
+#define REDRAW_PENDING 1
+#define REDRAW_BORDERS 2
+#define REPICK_NEEDED 4
+#define GOT_FOCUS 8
+#define CURSOR_ON 0x10
+#define UPDATE_SCROLLBARS 0x20
+#define LEFT_GRABBED_ITEM 0x40
+#define REPICK_IN_PROGRESS 0x100
+#define BBOX_NOT_EMPTY 0x200
+
+/*
+ * Flag bits for canvas items (redraw_flags):
+ *
+ * FORCE_REDRAW - 1 means that the new coordinates of some item
+ * are not yet registered using
+ * Tk_CanvasEventuallyRedraw(). It should still
+ * be done by the general canvas code.
+ */
+
+#define FORCE_REDRAW 8
+
+/*
+ * Canvas-related functions that are shared among Tk modules but not exported
+ * to the outside world:
+ */
+
+MODULE_SCOPE int TkCanvPostscriptCmd(TkCanvas *canvasPtr,
+ Tcl_Interp *interp, int argc, CONST char **argv);
+MODULE_SCOPE int TkCanvTranslatePath(TkCanvas *canvPtr,
+ int numVertex, double *coordPtr, int closed,
+ XPoint *outPtr);
+/*
+ * Standard item types provided by Tk:
+ */
+
+MODULE_SCOPE Tk_ItemType tkArcType, tkBitmapType, tkImageType, tkLineType;
+MODULE_SCOPE Tk_ItemType tkOvalType, tkPolygonType;
+MODULE_SCOPE Tk_ItemType tkRectangleType, tkTextType, tkWindowType;
+
+#endif /* _TKCANVAS */