/*
* tkUtil.c --
*
* This file contains miscellaneous utility functions that are used by
* the rest of Tk, such as a function for drawing a focus highlight.
*
* Copyright (c) 1994 The Regents of the University of California.
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tkInt.h"
/*
* The structure below defines the implementation of the "statekey" Tcl
* object, used for quickly finding a mapping in a TkStateMap.
*/
Tcl_ObjType tkStateKeyObjType = {
"statekey", /* name */
NULL, /* freeIntRepProc */
NULL, /* dupIntRepProc */
NULL, /* updateStringProc */
NULL /* setFromAnyProc */
};
/*
*--------------------------------------------------------------
*
* TkStateParseProc --
*
* This function is invoked during option processing to handle the
* "-state" and "-default" options.
*
* Results:
* A standard Tcl return value.
*
* Side effects:
* The state for a given item gets replaced by the state indicated in the
* value argument.
*
*--------------------------------------------------------------
*/
int
TkStateParseProc(
ClientData clientData, /* some flags.*/
Tcl_Interp *interp, /* Used for reporting errors. */
Tk_Window tkwin, /* Window containing canvas widget. */
const char *value, /* Value of option. */
char *widgRec, /* Pointer to record for item. */
int offset) /* Offset into item. */
{
int c;
int flags = PTR2INT(clientData);
size_t length;
register Tk_State *statePtr = (Tk_State *) (widgRec + offset);
if(value == NULL || *value == 0) {
*statePtr = TK_STATE_NULL;
return TCL_OK;
}
c = value[0];
length = strlen(value);
if ((c == 'n') && (strncmp(value, "normal", length) == 0)) {
*statePtr = TK_STATE_NORMAL;
return TCL_OK;
}
if ((c == 'd') && (strncmp(value, "disabled", length) == 0)) {
*statePtr = TK_STATE_DISABLED;
return TCL_OK;
}
if ((c == 'a') && (flags&1) && (strncmp(value, "active", length) == 0)) {
*statePtr = TK_STATE_ACTIVE;
return TCL_OK;
}
if ((c == 'h') && (flags&2) && (strncmp(value, "hidden", length) == 0)) {
*statePtr = TK_STATE_HIDDEN;
return TCL_OK;
}
Tcl_AppendResult(interp, "bad ", (flags&4)?"-default" : "state",
" value \"", value, "\": must be normal", NULL);
if (flags&1) {
Tcl_AppendResult(interp, ", active", NULL);
}
if (flags&2) {
Tcl_AppendResult(interp, ", hidden", NULL);
}
if (flags&3) {
Tcl_AppendResult(interp, ",", NULL);
}
Tcl_AppendResult(interp, " or disabled", NULL);
*statePtr = TK_STATE_NORMAL;
return TCL_ERROR;
}
/*
*--------------------------------------------------------------
*
* TkStatePrintProc --
*
* This function is invoked by the Tk configuration code to produce a
* printable string for the "-state" configuration option.
*
* Results:
* The return value is a string describing the state for the item
* referred to by "widgRec". In addition, *freeProcPtr is filled in with
* the address of a function to call to free the result string when it's
* no longer needed (or NULL to indicate that the string doesn't need to
* be freed).
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
char *
TkStatePrintProc(
ClientData clientData, /* Ignored. */
Tk_Window tkwin, /* Window containing canvas widget. */
char *widgRec, /* Pointer to record for item. */
int offset, /* Offset into item. */
Tcl_FreeProc **freeProcPtr) /* Pointer to variable to fill in with
* information about how to reclaim storage
* for return string. */
{
register Tk_State *statePtr = (Tk_State *) (widgRec + offset);
switch (*statePtr) {
case TK_STATE_NORMAL:
return "normal";
case TK_STATE_DISABLED:
return "disabled";
case TK_STATE_HIDDEN:
return "hidden";
case TK_STATE_ACTIVE:
return "active";
default:
return "";
}
}
/*
*--------------------------------------------------------------
*
* TkOrientParseProc --
*
* This function is invoked during option processing to handle the
* "-orient" option.
*
* Results:
* A standard Tcl return value.
*
* Side effects:
* The orientation for a given item gets replaced by the orientation
* indicated in the value argument.
*
*--------------------------------------------------------------
*/
int
TkOrientParseProc(
ClientData clientData, /* some flags.*/
Tcl_Interp *interp, /* Used for reporting errors. */
Tk_Window tkwin, /* Window containing canvas widget. */
const char *value, /* Value of option. */
char *widgRec, /* Pointer to record for item. */
int offset) /* Offset into item. */
{
int c;
size_t length;
register int *orientPtr = (int *) (widgRec + offset);
if(value == NULL || *value == 0) {
*orientPtr = 0;
return TCL_OK;
}
c = value[0];
length = strlen(value);
if ((c == 'h') && (strncmp(value, "horizontal", length) == 0)) {
*orientPtr = 0;
return TCL_OK;
}
if ((c == 'v') && (strncmp(value, "vertical", length) == 0)) {
*orientPtr = 1;
return TCL_OK;
}
Tcl_AppendResult(interp, "bad orientation \"", value,
"\": must be vertical or horizontal", NULL);
*orientPtr = 0;
return TCL_ERROR;
}
/*
*--------------------------------------------------------------
*
* TkOrientPrintProc --
*
* This function is invoked by the Tk configuration code to produce a
* printable string for the "-orient" configuration option.
*
* Results:
* The return value is a string describing the orientation for the item
* referred to by "widgRec". In addition, *freeProcPtr is filled in with
* the address of a function to call to free the result string when it's
* no longer needed (or NULL to indicate that the string doesn't need to
* be freed).
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
char *
TkOrientPrintProc(
ClientData clientData, /* Ignored. */
Tk_Window tkwin, /* Window containing canvas widget. */
char *widgRec, /* Pointer to record for item. */
int offset, /* Offset into item. */
Tcl_FreeProc **freeProcPtr) /* Pointer to variable to fill in with
* information about how to reclaim storage
* for return string. */
{
register int *statePtr = (int *) (widgRec + offset);
if (*statePtr) {
return "vertical";
} else {
return "horizontal";
}
}
/*
*----------------------------------------------------------------------
*
* TkOffsetParseProc --
*
* Converts the offset of a stipple or tile into the Tk_TSOffset
* structure.
*
*----------------------------------------------------------------------
*/
int
TkOffsetParseProc(
ClientData clientData, /* not used */
Tcl_Interp *interp, /* Interpreter to send results back to */
Tk_Window tkwin, /* Window on same display as tile */
const char *value, /* Name of image */
char *widgRec, /* Widget structure record */
int offset) /* Offset of tile in record */
{
Tk_TSOffset *offsetPtr = (Tk_TSOffset *) (widgRec + offset);
Tk_TSOffset tsoffset;
const char *q, *p;
int result;
if ((value == NULL) || (*value == 0)) {
tsoffset.flags = TK_OFFSET_CENTER|TK_OFFSET_MIDDLE;
goto goodTSOffset;
}
tsoffset.flags = 0;
p = value;
switch(value[0]) {
case '#':
if (PTR2INT(clientData) & TK_OFFSET_RELATIVE) {
tsoffset.flags = TK_OFFSET_RELATIVE;
p++;
break;
}
goto badTSOffset;
case 'e':
switch(value[1]) {
case '\0':
tsoffset.flags = TK_OFFSET_RIGHT|TK_OFFSET_MIDDLE;
goto goodTSOffset;
case 'n':
if (value[2]!='d' || value[3]!='\0') {
goto badTSOffset;
}
tsoffset.flags = INT_MAX;
goto goodTSOffset;
}
case 'w':
if (value[1] != '\0') {goto badTSOffset;}
tsoffset.flags = TK_OFFSET_LEFT|TK_OFFSET_MIDDLE;
goto goodTSOffset;
case 'n':
if ((value[1] != '\0') && (value[2] != '\0')) {
goto badTSOffset;
}
switch(value[1]) {
case '\0':
tsoffset.flags = TK_OFFSET_CENTER|TK_OFFSET_TOP;
goto goodTSOffset;
case 'w':
tsoffset.flags = TK_OFFSET_LEFT|TK_OFFSET_TOP;
goto goodTSOffset;
case 'e':
tsoffset.flags = TK_OFFSET_RIGHT|TK_OFFSET_TOP;
goto goodTSOffset;
}
goto badTSOffset;
case 's':
if ((value[1] != '\0') && (value[2] != '\0')) {
goto badTSOffset;
}
switch(value[1]) {
case '\0':
tsoffset.flags = TK_OFFSET_CENTER|TK_OFFSET_BOTTOM;
goto goodTSOffset;
case 'w':
tsoffset.flags = TK_OFFSET_LEFT|TK_OFFSET_BOTTOM;
goto goodTSOffset;
case 'e':
tsoffset.flags = TK_OFFSET_RIGHT|TK_OFFSET_BOTTOM;
goto goodTSOffset;
}
goto badTSOffset;
case 'c':
if (strncmp(value, "center", strlen(value)) != 0) {
goto badTSOffset;
}
tsoffset.flags = TK_OFFSET_CENTER|TK_OFFSET_MIDDLE;
goto goodTSOffset;
}
if ((q = strchr(p,',')) == NULL) {
if (PTR2INT(clientData) & TK_OFFSET_INDEX) {
if (Tcl_GetInt(interp, (char *) p, &tsoffset.flags) != TCL_OK) {
Tcl_ResetResult(interp);
goto badTSOffset;
}
tsoffset.flags |= TK_OFFSET_INDEX;
goto goodTSOffset;
}
goto badTSOffset;
}
*((char *) q) = 0;
result = Tk_GetPixels(interp, tkwin, (char *) p, &tsoffset.xoffset);
*((char *) q) = ',';
if (result != TCL_OK) {
return TCL_ERROR;
}
if (Tk_GetPixels(interp, tkwin, (char*)q+1, &tsoffset.yoffset) != TCL_OK) {
return TCL_ERROR;
}
goodTSOffset:
/*
* Below is a hack to allow the stipple/tile offset to be stored in the
* internal tile structure. Most of the times, offsetPtr is a pointer to
* an already existing tile structure. However if this structure is not
* already created, we must do it with Tk_GetTile()!!!!;
*/
memcpy(offsetPtr, &tsoffset, sizeof(Tk_TSOffset));
return TCL_OK;
badTSOffset:
Tcl_AppendResult(interp, "bad offset \"", value,
"\": expected \"x,y\"", NULL);
if (PTR2INT(clientData) & TK_OFFSET_RELATIVE) {
Tcl_AppendResult(interp, ", \"#x,y\"", NULL);
}
if (PTR2INT(clientData) & TK_OFFSET_INDEX) {
Tcl_AppendResult(interp, ", <index>", NULL);
}
Tcl_AppendResult(interp, ", n, ne, e, se, s, sw, w, nw, or center", NULL);
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* TkOffsetPrintProc --
*
* Returns the offset of the tile.
*
* Results:
* The offset of the tile is returned.
*
*----------------------------------------------------------------------
*/
char *
TkOffsetPrintProc(
ClientData clientData, /* not used */
Tk_Window tkwin, /* not used */
char *widgRec, /* Widget structure record */
int offset, /* Offset of tile in record */
Tcl_FreeProc **freeProcPtr) /* not used */
{
Tk_TSOffset *offsetPtr = (Tk_TSOffset *) (widgRec + offset);
char *p, *q;
if (offsetPtr->flags & TK_OFFSET_INDEX) {
if (offsetPtr->flags >= INT_MAX) {
return "end";
}
p = (char *) ckalloc(32);
sprintf(p, "%d", offsetPtr->flags & ~TK_OFFSET_INDEX);
*freeProcPtr = TCL_DYNAMIC;
return p;
}
if (offsetPtr->flags & TK_OFFSET_TOP) {
if (offsetPtr->flags & TK_OFFSET_LEFT) {
return "nw";
} else if (offsetPtr->flags & TK_OFFSET_CENTER) {
return "n";
} else if (offsetPtr->flags & TK_OFFSET_RIGHT) {
return "ne";
}
} else if (offsetPtr->flags & TK_OFFSET_MIDDLE) {
if (offsetPtr->flags & TK_OFFSET_LEFT) {
return "w";
} else if (offsetPtr->flags & TK_OFFSET_CENTER) {
return "center";
} else if (offsetPtr->flags & TK_OFFSET_RIGHT) {
return "e";
}
} else if (offsetPtr->flags & TK_OFFSET_BOTTOM) {
if (offsetPtr->flags & TK_OFFSET_LEFT) {
return "sw";
} else if (offsetPtr->flags & TK_OFFSET_CENTER) {
return "s";
} else if (offsetPtr->flags & TK_OFFSET_RIGHT) {
return "se";
}
}
q = p = (char *) ckalloc(32);
if (offsetPtr->flags & TK_OFFSET_RELATIVE) {
*q++ = '#';
}
sprintf(q, "%d,%d", offsetPtr->xoffset, offsetPtr->yoffset);
*freeProcPtr = TCL_DYNAMIC;
return p;
}
/*
*----------------------------------------------------------------------
*
* TkPixelParseProc --
*
* Converts the name of an image into a tile.
*
*----------------------------------------------------------------------
*/
int
TkPixelParseProc(
ClientData clientData, /* If non-NULL, negative values are allowed as
* well */
Tcl_Interp *interp, /* Interpreter to send results back to */
Tk_Window tkwin, /* Window on same display as tile */
const char *value, /* Name of image */
char *widgRec, /* Widget structure record */
int offset) /* Offset of tile in record */
{
double *doublePtr = (double *) (widgRec + offset);
int result;
result = TkGetDoublePixels(interp, tkwin, value, doublePtr);
if ((result == TCL_OK) && (clientData == NULL) && (*doublePtr < 0.0)) {
Tcl_AppendResult(interp, "bad screen distance \"", value, "\"", NULL);
return TCL_ERROR;
}
return result;
}
/*
*----------------------------------------------------------------------
*
* TkPixelPrintProc --
*
* Returns the name of the tile.
*
* Results:
* The name of the tile is returned.
*
*----------------------------------------------------------------------
*/
char *
TkPixelPrintProc(
ClientData clientData, /* not used */
Tk_Window tkwin, /* not used */
char *widgRec, /* Widget structure record */
int offset, /* Offset of tile in record */
Tcl_FreeProc **freeProcPtr) /* not used */
{
double *doublePtr = (double *) (widgRec + offset);
char *p = (char *) ckalloc(24);
Tcl_PrintDouble(NULL, *doublePtr, p);
*freeProcPtr = TCL_DYNAMIC;
return p;
}
/*
*----------------------------------------------------------------------
*
* TkDrawInsetFocusHighlight --
*
* This function draws a rectangular ring around the outside of a widget
* to indicate that it has received the input focus. It takes an
* additional padding argument that specifies how much padding is present
* outside the widget.
*
* Results:
* None.
*
* Side effects:
* A rectangle "width" pixels wide is drawn in "drawable", corresponding
* to the outer area of "tkwin".
*
*----------------------------------------------------------------------
*/
void
TkDrawInsetFocusHighlight(
Tk_Window tkwin, /* Window whose focus highlight ring is to be
* drawn. */
GC gc, /* Graphics context to use for drawing the
* highlight ring. */
int width, /* Width of the highlight ring, in pixels. */
Drawable drawable, /* Where to draw the ring (typically a pixmap
* for double buffering). */
int padding) /* Width of padding outside of widget. */
{
XRectangle rects[4];
rects[0].x = padding;
rects[0].y = padding;
rects[0].width = Tk_Width(tkwin) - (2 * padding);
rects[0].height = width;
rects[1].x = padding;
rects[1].y = Tk_Height(tkwin) - width - padding;
rects[1].width = Tk_Width(tkwin) - (2 * padding);
rects[1].height = width;
rects[2].x = padding;
rects[2].y = width + padding;
rects[2].width = width;
rects[2].height = Tk_Height(tkwin) - 2*width - 2*padding;
rects[3].x = Tk_Width(tkwin) - width - padding;
rects[3].y = rects[2].y;
rects[3].width = width;
rects[3].height = rects[2].height;
XFillRectangles(Tk_Display(tkwin), drawable, gc, rects, 4);
}
/*
*----------------------------------------------------------------------
*
* Tk_DrawFocusHighlight --
*
* This function draws a rectangular ring around the outside of a widget
* to indicate that it has received the input focus.
*
* This function is now deprecated. Use TkpDrawHighlightBorder instead,
* since this function does not handle drawing the Focus ring properly on
* the Macintosh - you need to know the background GC as well as the
* foreground since the Mac focus ring separated from the widget by a 1
* pixel border.
*
* Results:
* None.
*
* Side effects:
* A rectangle "width" pixels wide is drawn in "drawable", corresponding
* to the outer area of "tkwin".
*
*----------------------------------------------------------------------
*/
void
Tk_DrawFocusHighlight(
Tk_Window tkwin, /* Window whose focus highlight ring is to be
* drawn. */
GC gc, /* Graphics context to use for drawing the
* highlight ring. */
int width, /* Width of the highlight ring, in pixels. */
Drawable drawable) /* Where to draw the ring (typically a pixmap
* for double buffering). */
{
TkDrawInsetFocusHighlight(tkwin, gc, width, drawable, 0);
}
/*
*----------------------------------------------------------------------
*
* Tk_GetScrollInfo --
*
* This function is invoked to parse "xview" and "yview" scrolling
* commands for widgets using the new scrolling command syntax ("moveto"
* or "scroll" options).
*
* Results:
* The return value is either TK_SCROLL_MOVETO, TK_SCROLL_PAGES,
* TK_SCROLL_UNITS, or TK_SCROLL_ERROR. This indicates whether the
* command was successfully parsed and what form the command took. If
* TK_SCROLL_MOVETO, *dblPtr is filled in with the desired position; if
* TK_SCROLL_PAGES or TK_SCROLL_UNITS, *intPtr is filled in with the
* number of lines to move (may be negative); if TK_SCROLL_ERROR, the
* interp's result contains an error message.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
Tk_GetScrollInfo(
Tcl_Interp *interp, /* Used for error reporting. */
int argc, /* # arguments for command. */
const char **argv, /* Arguments for command. */
double *dblPtr, /* Filled in with argument "moveto" option, if
* any. */
int *intPtr) /* Filled in with number of pages or lines to
* scroll, if any. */
{
int c = argv[2][0];
size_t length = strlen(argv[2]);
if ((c == 'm') && (strncmp(argv[2], "moveto", length) == 0)) {
if (argc != 4) {
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" ", argv[1], " moveto fraction\"", NULL);
return TK_SCROLL_ERROR;
}
if (Tcl_GetDouble(interp, argv[3], dblPtr) != TCL_OK) {
return TK_SCROLL_ERROR;
}
return TK_SCROLL_MOVETO;
} else if ((c == 's')
&& (strncmp(argv[2], "scroll", length) == 0)) {
if (argc != 5) {
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" ", argv[1], " scroll number units|pages\"", NULL);
return TK_SCROLL_ERROR;
}
if (Tcl_GetInt(interp, argv[3], intPtr) != TCL_OK) {
return TK_SCROLL_ERROR;
}
length = strlen(argv[4]);
c = argv[4][0];
if ((c == 'p') && (strncmp(argv[4], "pages", length) == 0)) {
return TK_SCROLL_PAGES;
} else if ((c == 'u') && (strncmp(argv[4], "units", length) == 0)) {
return TK_SCROLL_UNITS;
}
Tcl_AppendResult(interp, "bad argument \"", argv[4],
"\": must be units or pages", NULL);
return TK_SCROLL_ERROR;
}
Tcl_AppendResult(interp, "unknown option \"", argv[2],
"\": must be moveto or scroll", NULL);
return TK_SCROLL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* Tk_GetScrollInfoObj --
*
* This function is invoked to parse "xview" and "yview" scrolling
* commands for widgets using the new scrolling command syntax ("moveto"
* or "scroll" options).
*
* Results:
* The return value is either TK_SCROLL_MOVETO, TK_SCROLL_PAGES,
* TK_SCROLL_UNITS, or TK_SCROLL_ERROR. This indicates whether the
* command was successfully parsed and what form the command took. If
* TK_SCROLL_MOVETO, *dblPtr is filled in with the desired position; if
* TK_SCROLL_PAGES or TK_SCROLL_UNITS, *intPtr is filled in with the
* number of lines to move (may be negative); if TK_SCROLL_ERROR, the
* interp's result contains an error message.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
Tk_GetScrollInfoObj(
Tcl_Interp *interp, /* Used for error reporting. */
int objc, /* # arguments for command. */
Tcl_Obj *const objv[], /* Arguments for command. */
double *dblPtr, /* Filled in with argument "moveto" option, if
* any. */
int *intPtr) /* Filled in with number of pages or lines to
* scroll, if any. */
{
int length;
const char *arg;
arg = Tcl_GetStringFromObj(objv[2], &length);
#define ArgPfxEq(str) ((arg[0]==str[0])&&!strncmp(arg,str,(unsigned)length))
if (ArgPfxEq("moveto")) {
if (objc != 4) {
Tcl_WrongNumArgs(interp, 2, objv, "moveto fraction");
return TK_SCROLL_ERROR;
}
if (Tcl_GetDoubleFromObj(interp, objv[3], dblPtr) != TCL_OK) {
return TK_SCROLL_ERROR;
}
return TK_SCROLL_MOVETO;
} else if (ArgPfxEq("scroll")) {
if (objc != 5) {
Tcl_WrongNumArgs(interp, 2, objv, "scroll number units|pages");
return TK_SCROLL_ERROR;
}
if (Tcl_GetIntFromObj(interp, objv[3], intPtr) != TCL_OK) {
return TK_SCROLL_ERROR;
}
arg = Tcl_GetStringFromObj(objv[4], &length);
if (ArgPfxEq("pages")) {
return TK_SCROLL_PAGES;
} else if (ArgPfxEq("units")) {
return TK_SCROLL_UNITS;
}
Tcl_AppendResult(interp, "bad argument \"", arg,
"\": must be units or pages", NULL);
return TK_SCROLL_ERROR;
}
Tcl_AppendResult(interp, "unknown option \"", arg,
"\": must be moveto or scroll", NULL);
return TK_SCROLL_ERROR;
}
/*
*---------------------------------------------------------------------------
*
* TkComputeAnchor --
*
* Determine where to place a rectangle so that it will be properly
* anchored with respect to the given window. Used by widgets to align a
* box of text inside a window. When anchoring with respect to one of the
* sides, the rectangle be placed inside of the internal border of the
* window.
*
* Results:
* *xPtr and *yPtr set to the upper-left corner of the rectangle anchored
* in the window.
*
* Side effects:
* None.
*
*---------------------------------------------------------------------------
*/
void
TkComputeAnchor(
Tk_Anchor anchor, /* Desired anchor. */
Tk_Window tkwin, /* Anchored with respect to this window. */
int padX, int padY, /* Use this extra padding inside window, in
* addition to the internal border. */
int innerWidth, int innerHeight,
/* Size of rectangle to anchor in window. */
int *xPtr, int *yPtr) /* Returns upper-left corner of anchored
* rectangle. */
{
/*
* Handle the horizontal parts.
*/
switch (anchor) {
case TK_ANCHOR_NW:
case TK_ANCHOR_W:
case TK_ANCHOR_SW:
*xPtr = Tk_InternalBorderLeft(tkwin) + padX;
break;
case TK_ANCHOR_N:
case TK_ANCHOR_CENTER:
case TK_ANCHOR_S:
*xPtr = (Tk_Width(tkwin) - innerWidth - Tk_InternalBorderLeft(tkwin) -
Tk_InternalBorderRight(tkwin)) / 2 +
Tk_InternalBorderLeft(tkwin);
break;
default:
*xPtr = Tk_Width(tkwin) - Tk_InternalBorderRight(tkwin) - padX
- innerWidth;
break;
}
/*
* Handle the vertical parts.
*/
switch (anchor) {
case TK_ANCHOR_NW:
case TK_ANCHOR_N:
case TK_ANCHOR_NE:
*yPtr = Tk_InternalBorderTop(tkwin) + padY;
break;
case TK_ANCHOR_W:
case TK_ANCHOR_CENTER:
case TK_ANCHOR_E:
*yPtr = (Tk_Height(tkwin) - innerHeight- Tk_InternalBorderTop(tkwin) -
Tk_InternalBorderBottom(tkwin)) / 2 +
Tk_InternalBorderTop(tkwin);
break;
default:
*yPtr = Tk_Height(tkwin) - Tk_InternalBorderBottom(tkwin) - padY
- innerHeight;
break;
}
}
/*
*---------------------------------------------------------------------------
*
* TkFindStateString --
*
* Given a lookup table, map a number to a string in the table.
*
* Results:
* If numKey was equal to the numeric key of one of the elements in the
* table, returns the string key of that element. Returns NULL if numKey
* was not equal to any of the numeric keys in the table.
*
* Side effects.
* None.
*
*---------------------------------------------------------------------------
*/
char *
TkFindStateString(
const TkStateMap *mapPtr, /* The state table. */
int numKey) /* The key to try to find in the table. */
{
for (; mapPtr->strKey!=NULL ; mapPtr++) {
if (numKey == mapPtr->numKey) {
return (char *) mapPtr->strKey;
}
}
return NULL;
}
/*
*---------------------------------------------------------------------------
*
* TkFindStateNum, TkFindStateNumObj --
*
* Given a lookup table, map a string to a number in the table.
*
* Results:
* If strKey was equal to the string keys of one of the elements in the
* table, returns the numeric key of that element. Returns the numKey
* associated with the last element (the NULL string one) in the table if
* strKey was not equal to any of the string keys in the table. In that
* case, an error message is also left in the interp's result (if interp
* is not NULL).
*
* Side effects.
* None.
*
*---------------------------------------------------------------------------
*/
int
TkFindStateNum(
Tcl_Interp *interp, /* Interp for error reporting. */
const char *option, /* String to use when constructing error. */
const TkStateMap *mapPtr, /* Lookup table. */
const char *strKey) /* String to try to find in lookup table. */
{
const TkStateMap *mPtr;
/*
* See if the value is in the state map.
*/
for (mPtr = mapPtr; mPtr->strKey != NULL; mPtr++) {
if (strcmp(strKey, mPtr->strKey) == 0) {
return mPtr->numKey;
}
}
/*
* Not there. Generate an error message (if we can) and return the
* default.
*/
if (interp != NULL) {
mPtr = mapPtr;
Tcl_AppendResult(interp, "bad ", option, " value \"", strKey,
"\": must be ", mPtr->strKey, NULL);
for (mPtr++; mPtr->strKey != NULL; mPtr++) {
Tcl_AppendResult(interp,
((mPtr[1].strKey != NULL) ? ", " : ", or "),
mPtr->strKey, NULL);
}
}
return mPtr->numKey;
}
int
TkFindStateNumObj(
Tcl_Interp *interp, /* Interp for error reporting. */
Tcl_Obj *optionPtr, /* String to use when constructing error. */
const TkStateMap *mapPtr, /* Lookup table. */
Tcl_Obj *keyPtr) /* String key to find in lookup table. */
{
const TkStateMap *mPtr;
const char *key;
const Tcl_ObjType *typePtr;
/*
* See if the value is in the object cache.
*/
if ((keyPtr->typePtr == &tkStateKeyObjType)
&& (keyPtr->internalRep.twoPtrValue.ptr1 == mapPtr)) {
return PTR2INT(keyPtr->internalRep.twoPtrValue.ptr2);
}
/*
* Not there. Look in the state map.
*/
key = Tcl_GetStringFromObj(keyPtr, NULL);
for (mPtr = mapPtr; mPtr->strKey != NULL; mPtr++) {
if (strcmp(key, mPtr->strKey) == 0) {
typePtr = keyPtr->typePtr;
if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
(*typePtr->freeIntRepProc)(keyPtr);
}
keyPtr->internalRep.twoPtrValue.ptr1 = (void *) mapPtr;
keyPtr->internalRep.twoPtrValue.ptr2 = INT2PTR(mPtr->numKey);
keyPtr->typePtr = &tkStateKeyObjType;
return mPtr->numKey;
}
}
/*
* Not there either. Generate an error message (if we can) and return the
* default.
*/
if (interp != NULL) {
mPtr = mapPtr;
Tcl_AppendResult(interp, "bad ", Tcl_GetString(optionPtr),
" value \"", key, "\": must be ", mPtr->strKey, NULL);
for (mPtr++; mPtr->strKey != NULL; mPtr++) {
Tcl_AppendResult(interp,
((mPtr[1].strKey != NULL) ? ", " : ", or "),
mPtr->strKey, NULL);
}
}
return mPtr->numKey;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/