+++ /dev/null
-/*
- * tkScale.c --
- *
- * This module implements a scale widgets for the Tk toolkit. A scale
- * displays a slider that can be adjusted to change a value; it also
- * displays numeric labels and a textual label, if desired.
- *
- * The modifications to use floating-point values are based on an
- * implementation by Paul Mackerras. The -variable option is due to
- * Henning Schulzrinne. All of these are used with permission.
- *
- * Copyright (c) 1990-1994 The Regents of the University of California.
- * Copyright (c) 1994-1997 Sun Microsystems, Inc.
- * Copyright (c) 1998-2000 by Scriptics Corporation.
- *
- * See the file "license.terms" for information on usage and redistribution of
- * this file, and for a DISCLAIMER OF ALL WARRANTIES.
- */
-
-#include "default.h"
-#include "tkInt.h"
-#include "tkScale.h"
-
-/*
- * The following table defines the legal values for the -orient option. It is
- * used together with the "enum orient" declaration in tkScale.h.
- */
-
-static const char *const orientStrings[] = {
- "horizontal", "vertical", NULL
-};
-
-/*
- * The following table defines the legal values for the -state option. It is
- * used together with the "enum state" declaration in tkScale.h.
- */
-
-static const char *const stateStrings[] = {
- "active", "disabled", "normal", NULL
-};
-
-static const Tk_OptionSpec optionSpecs[] = {
- {TK_OPTION_BORDER, "-activebackground", "activeBackground", "Foreground",
- DEF_SCALE_ACTIVE_BG_COLOR, -1, Tk_Offset(TkScale, activeBorder),
- 0, DEF_SCALE_ACTIVE_BG_MONO, 0},
- {TK_OPTION_BORDER, "-background", "background", "Background",
- DEF_SCALE_BG_COLOR, -1, Tk_Offset(TkScale, bgBorder),
- 0, DEF_SCALE_BG_MONO, 0},
- {TK_OPTION_DOUBLE, "-bigincrement", "bigIncrement", "BigIncrement",
- DEF_SCALE_BIG_INCREMENT, -1, Tk_Offset(TkScale, bigIncrement),
- 0, 0, 0},
- {TK_OPTION_SYNONYM, "-bd", NULL, NULL,
- NULL, 0, -1, 0, "-borderwidth", 0},
- {TK_OPTION_SYNONYM, "-bg", NULL, NULL,
- NULL, 0, -1, 0, "-background", 0},
- {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
- DEF_SCALE_BORDER_WIDTH, -1, Tk_Offset(TkScale, borderWidth),
- 0, 0, 0},
- {TK_OPTION_STRING, "-command", "command", "Command",
- DEF_SCALE_COMMAND, -1, Tk_Offset(TkScale, command),
- TK_OPTION_NULL_OK, 0, 0},
- {TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor",
- DEF_SCALE_CURSOR, -1, Tk_Offset(TkScale, cursor),
- TK_OPTION_NULL_OK, 0, 0},
- {TK_OPTION_INT, "-digits", "digits", "Digits",
- DEF_SCALE_DIGITS, -1, Tk_Offset(TkScale, digits),
- 0, 0, 0},
- {TK_OPTION_SYNONYM, "-fg", "foreground", NULL,
- NULL, 0, -1, 0, "-foreground", 0},
- {TK_OPTION_FONT, "-font", "font", "Font",
- DEF_SCALE_FONT, -1, Tk_Offset(TkScale, tkfont), 0, 0, 0},
- {TK_OPTION_COLOR, "-foreground", "foreground", "Foreground",
- DEF_SCALE_FG_COLOR, -1, Tk_Offset(TkScale, textColorPtr), 0,
- (ClientData) DEF_SCALE_FG_MONO, 0},
- {TK_OPTION_DOUBLE, "-from", "from", "From", DEF_SCALE_FROM, -1,
- Tk_Offset(TkScale, fromValue), 0, 0, 0},
- {TK_OPTION_BORDER, "-highlightbackground", "highlightBackground",
- "HighlightBackground", DEF_SCALE_HIGHLIGHT_BG_COLOR,
- -1, Tk_Offset(TkScale, highlightBorder),
- 0, DEF_SCALE_HIGHLIGHT_BG_MONO, 0},
- {TK_OPTION_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
- DEF_SCALE_HIGHLIGHT, -1, Tk_Offset(TkScale, highlightColorPtr),
- 0, 0, 0},
- {TK_OPTION_PIXELS, "-highlightthickness", "highlightThickness",
- "HighlightThickness", DEF_SCALE_HIGHLIGHT_WIDTH, -1,
- Tk_Offset(TkScale, highlightWidth), 0, 0, 0},
- {TK_OPTION_STRING, "-label", "label", "Label",
- DEF_SCALE_LABEL, -1, Tk_Offset(TkScale, label),
- TK_OPTION_NULL_OK, 0, 0},
- {TK_OPTION_PIXELS, "-length", "length", "Length",
- DEF_SCALE_LENGTH, -1, Tk_Offset(TkScale, length), 0, 0, 0},
- {TK_OPTION_STRING_TABLE, "-orient", "orient", "Orient",
- DEF_SCALE_ORIENT, -1, Tk_Offset(TkScale, orient),
- 0, orientStrings, 0},
- {TK_OPTION_RELIEF, "-relief", "relief", "Relief",
- DEF_SCALE_RELIEF, -1, Tk_Offset(TkScale, relief), 0, 0, 0},
- {TK_OPTION_INT, "-repeatdelay", "repeatDelay", "RepeatDelay",
- DEF_SCALE_REPEAT_DELAY, -1, Tk_Offset(TkScale, repeatDelay),
- 0, 0, 0},
- {TK_OPTION_INT, "-repeatinterval", "repeatInterval", "RepeatInterval",
- DEF_SCALE_REPEAT_INTERVAL, -1, Tk_Offset(TkScale, repeatInterval),
- 0, 0, 0},
- {TK_OPTION_DOUBLE, "-resolution", "resolution", "Resolution",
- DEF_SCALE_RESOLUTION, -1, Tk_Offset(TkScale, resolution),
- 0, 0, 0},
- {TK_OPTION_BOOLEAN, "-showvalue", "showValue", "ShowValue",
- DEF_SCALE_SHOW_VALUE, -1, Tk_Offset(TkScale, showValue),
- 0, 0, 0},
- {TK_OPTION_PIXELS, "-sliderlength", "sliderLength", "SliderLength",
- DEF_SCALE_SLIDER_LENGTH, -1, Tk_Offset(TkScale, sliderLength),
- 0, 0, 0},
- {TK_OPTION_RELIEF, "-sliderrelief", "sliderRelief", "SliderRelief",
- DEF_SCALE_SLIDER_RELIEF, -1, Tk_Offset(TkScale, sliderRelief),
- 0, 0, 0},
- {TK_OPTION_STRING_TABLE, "-state", "state", "State",
- DEF_SCALE_STATE, -1, Tk_Offset(TkScale, state),
- 0, stateStrings, 0},
- {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus",
- DEF_SCALE_TAKE_FOCUS, Tk_Offset(TkScale, takeFocusPtr), -1,
- TK_OPTION_NULL_OK, 0, 0},
- {TK_OPTION_DOUBLE, "-tickinterval", "tickInterval", "TickInterval",
- DEF_SCALE_TICK_INTERVAL, -1, Tk_Offset(TkScale, tickInterval),
- 0, 0, 0},
- {TK_OPTION_DOUBLE, "-to", "to", "To",
- DEF_SCALE_TO, -1, Tk_Offset(TkScale, toValue), 0, 0, 0},
- {TK_OPTION_COLOR, "-troughcolor", "troughColor", "Background",
- DEF_SCALE_TROUGH_COLOR, -1, Tk_Offset(TkScale, troughColorPtr),
- 0, DEF_SCALE_TROUGH_MONO, 0},
- {TK_OPTION_STRING, "-variable", "variable", "Variable",
- DEF_SCALE_VARIABLE, Tk_Offset(TkScale, varNamePtr), -1,
- TK_OPTION_NULL_OK, 0, 0},
- {TK_OPTION_PIXELS, "-width", "width", "Width",
- DEF_SCALE_WIDTH, -1, Tk_Offset(TkScale, width), 0, 0, 0},
- {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0}
-};
-
-/*
- * The following tables define the scale widget commands and map the indexes
- * into the string tables into a single enumerated type used to dispatch the
- * scale widget command.
- */
-
-static const char *const commandNames[] = {
- "cget", "configure", "coords", "get", "identify", "set", NULL
-};
-
-enum command {
- COMMAND_CGET, COMMAND_CONFIGURE, COMMAND_COORDS, COMMAND_GET,
- COMMAND_IDENTIFY, COMMAND_SET
-};
-
-/*
- * Forward declarations for procedures defined later in this file:
- */
-
-static void ComputeFormat(TkScale *scalePtr);
-static void ComputeScaleGeometry(TkScale *scalePtr);
-static int ConfigureScale(Tcl_Interp *interp, TkScale *scalePtr,
- int objc, Tcl_Obj *const objv[]);
-static void DestroyScale(char *memPtr);
-static void ScaleCmdDeletedProc(ClientData clientData);
-static void ScaleEventProc(ClientData clientData,
- XEvent *eventPtr);
-static char * ScaleVarProc(ClientData clientData,
- Tcl_Interp *interp, const char *name1,
- const char *name2, int flags);
-static int ScaleWidgetObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const objv[]);
-static void ScaleWorldChanged(ClientData instanceData);
-static void ScaleSetVariable(TkScale *scalePtr);
-
-/*
- * The structure below defines scale class behavior by means of procedures
- * that can be invoked from generic window code.
- */
-
-static const Tk_ClassProcs scaleClass = {
- sizeof(Tk_ClassProcs), /* size */
- ScaleWorldChanged, /* worldChangedProc */
- NULL, /* createProc */
- NULL /* modalProc */
-};
-\f
-/*
- *--------------------------------------------------------------
- *
- * Tk_ScaleObjCmd --
- *
- * This procedure is invoked to process the "scale" Tcl command. See the
- * user documentation for details on what it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
-
-int
-Tk_ScaleObjCmd(
- ClientData clientData, /* NULL. */
- Tcl_Interp *interp, /* Current interpreter. */
- int objc, /* Number of arguments. */
- Tcl_Obj *const objv[]) /* Argument values. */
-{
- register TkScale *scalePtr;
- Tk_OptionTable optionTable;
- Tk_Window tkwin;
-
- if (objc < 2) {
- Tcl_WrongNumArgs(interp, 1, objv, "pathName ?-option value ...?");
- return TCL_ERROR;
- }
-
- tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp),
- Tcl_GetString(objv[1]), NULL);
- if (tkwin == NULL) {
- return TCL_ERROR;
- }
-
- /*
- * Create the option table for this widget class. If it has already been
- * created, the cached pointer will be returned.
- */
-
- optionTable = Tk_CreateOptionTable(interp, optionSpecs);
-
- Tk_SetClass(tkwin, "Scale");
- scalePtr = TkpCreateScale(tkwin);
-
- /*
- * Initialize fields that won't be initialized by ConfigureScale, or which
- * ConfigureScale expects to have reasonable values (e.g. resource
- * pointers).
- */
-
- scalePtr->tkwin = tkwin;
- scalePtr->display = Tk_Display(tkwin);
- scalePtr->interp = interp;
- scalePtr->widgetCmd = Tcl_CreateObjCommand(interp,
- Tk_PathName(scalePtr->tkwin), ScaleWidgetObjCmd,
- scalePtr, ScaleCmdDeletedProc);
- scalePtr->optionTable = optionTable;
- scalePtr->orient = ORIENT_VERTICAL;
- scalePtr->width = 0;
- scalePtr->length = 0;
- scalePtr->value = 0.0;
- scalePtr->varNamePtr = NULL;
- scalePtr->fromValue = 0.0;
- scalePtr->toValue = 0.0;
- scalePtr->tickInterval = 0.0;
- scalePtr->resolution = 1.0;
- scalePtr->digits = 0;
- scalePtr->bigIncrement = 0.0;
- scalePtr->command = NULL;
- scalePtr->repeatDelay = 0;
- scalePtr->repeatInterval = 0;
- scalePtr->label = NULL;
- scalePtr->labelLength = 0;
- scalePtr->state = STATE_NORMAL;
- scalePtr->borderWidth = 0;
- scalePtr->bgBorder = NULL;
- scalePtr->activeBorder = NULL;
- scalePtr->sliderRelief = TK_RELIEF_RAISED;
- scalePtr->troughColorPtr = NULL;
- scalePtr->troughGC = None;
- scalePtr->copyGC = None;
- scalePtr->tkfont = NULL;
- scalePtr->textColorPtr = NULL;
- scalePtr->textGC = None;
- scalePtr->relief = TK_RELIEF_FLAT;
- scalePtr->highlightWidth = 0;
- scalePtr->highlightBorder = NULL;
- scalePtr->highlightColorPtr = NULL;
- scalePtr->inset = 0;
- scalePtr->sliderLength = 0;
- scalePtr->showValue = 0;
- scalePtr->horizLabelY = 0;
- scalePtr->horizValueY = 0;
- scalePtr->horizTroughY = 0;
- scalePtr->horizTickY = 0;
- scalePtr->vertTickRightX = 0;
- scalePtr->vertValueRightX = 0;
- scalePtr->vertTroughX = 0;
- scalePtr->vertLabelX = 0;
- scalePtr->fontHeight = 0;
- scalePtr->cursor = None;
- scalePtr->takeFocusPtr = NULL;
- scalePtr->flags = NEVER_SET;
-
- Tk_SetClassProcs(scalePtr->tkwin, &scaleClass, scalePtr);
- Tk_CreateEventHandler(scalePtr->tkwin,
- ExposureMask|StructureNotifyMask|FocusChangeMask,
- ScaleEventProc, scalePtr);
-
- if ((Tk_InitOptions(interp, (char *) scalePtr, optionTable, tkwin)
- != TCL_OK) ||
- (ConfigureScale(interp, scalePtr, objc - 2, objv + 2) != TCL_OK)) {
- Tk_DestroyWindow(scalePtr->tkwin);
- return TCL_ERROR;
- }
-
- Tcl_SetObjResult(interp, TkNewWindowObj(scalePtr->tkwin));
- return TCL_OK;
-}
-\f
-/*
- *--------------------------------------------------------------
- *
- * ScaleWidgetObjCmd --
- *
- * This procedure is invoked to process the Tcl command that corresponds
- * to a widget managed by this module. See the user documentation for
- * details on what it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
-
-static int
-ScaleWidgetObjCmd(
- ClientData clientData, /* Information about scale widget. */
- Tcl_Interp *interp, /* Current interpreter. */
- int objc, /* Number of arguments. */
- Tcl_Obj *const objv[]) /* Argument strings. */
-{
- TkScale *scalePtr = clientData;
- Tcl_Obj *objPtr;
- int index, result;
-
- if (objc < 2) {
- Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
- return TCL_ERROR;
- }
- result = Tcl_GetIndexFromObjStruct(interp, objv[1], commandNames,
- sizeof(char *), "option", 0, &index);
- if (result != TCL_OK) {
- return result;
- }
- Tcl_Preserve(scalePtr);
-
- switch (index) {
- case COMMAND_CGET:
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "cget option");
- goto error;
- }
- objPtr = Tk_GetOptionValue(interp, (char *) scalePtr,
- scalePtr->optionTable, objv[2], scalePtr->tkwin);
- if (objPtr == NULL) {
- goto error;
- }
- Tcl_SetObjResult(interp, objPtr);
- break;
- case COMMAND_CONFIGURE:
- if (objc <= 3) {
- objPtr = Tk_GetOptionInfo(interp, (char *) scalePtr,
- scalePtr->optionTable,
- (objc == 3) ? objv[2] : NULL, scalePtr->tkwin);
- if (objPtr == NULL) {
- goto error;
- }
- Tcl_SetObjResult(interp, objPtr);
- } else {
- result = ConfigureScale(interp, scalePtr, objc-2, objv+2);
- }
- break;
- case COMMAND_COORDS: {
- int x, y;
- double value;
- Tcl_Obj *coords[2];
-
- if ((objc != 2) && (objc != 3)) {
- Tcl_WrongNumArgs(interp, 1, objv, "coords ?value?");
- goto error;
- }
- if (objc == 3) {
- if (Tcl_GetDoubleFromObj(interp, objv[2], &value) != TCL_OK) {
- goto error;
- }
- } else {
- value = scalePtr->value;
- }
- if (scalePtr->orient == ORIENT_VERTICAL) {
- x = scalePtr->vertTroughX + scalePtr->width/2
- + scalePtr->borderWidth;
- y = TkScaleValueToPixel(scalePtr, value);
- } else {
- x = TkScaleValueToPixel(scalePtr, value);
- y = scalePtr->horizTroughY + scalePtr->width/2
- + scalePtr->borderWidth;
- }
- coords[0] = Tcl_NewIntObj(x);
- coords[1] = Tcl_NewIntObj(y);
- Tcl_SetObjResult(interp, Tcl_NewListObj(2, coords));
- break;
- }
- case COMMAND_GET: {
- double value;
- int x, y;
-
- if ((objc != 2) && (objc != 4)) {
- Tcl_WrongNumArgs(interp, 1, objv, "get ?x y?");
- goto error;
- }
- if (objc == 2) {
- value = scalePtr->value;
- } else {
- if ((Tcl_GetIntFromObj(interp, objv[2], &x) != TCL_OK) ||
- (Tcl_GetIntFromObj(interp, objv[3], &y) != TCL_OK)) {
- goto error;
- }
- value = TkScalePixelToValue(scalePtr, x, y);
- }
- Tcl_SetObjResult(interp, Tcl_ObjPrintf(scalePtr->format, value));
- break;
- }
- case COMMAND_IDENTIFY: {
- int x, y;
- const char *zone = "";
-
- if (objc != 4) {
- Tcl_WrongNumArgs(interp, 1, objv, "identify x y");
- goto error;
- }
- if ((Tcl_GetIntFromObj(interp, objv[2], &x) != TCL_OK)
- || (Tcl_GetIntFromObj(interp, objv[3], &y) != TCL_OK)) {
- goto error;
- }
- switch (TkpScaleElement(scalePtr, x, y)) {
- case TROUGH1: zone = "trough1"; break;
- case SLIDER: zone = "slider"; break;
- case TROUGH2: zone = "trough2"; break;
- }
- Tcl_SetObjResult(interp, Tcl_NewStringObj(zone, -1));
- break;
- }
- case COMMAND_SET: {
- double value;
-
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "set value");
- goto error;
- }
- if (Tcl_GetDoubleFromObj(interp, objv[2], &value) != TCL_OK) {
- goto error;
- }
- if (scalePtr->state != STATE_DISABLED) {
- TkScaleSetValue(scalePtr, value, 1, 1);
- }
- break;
- }
- }
- Tcl_Release(scalePtr);
- return result;
-
- error:
- Tcl_Release(scalePtr);
- return TCL_ERROR;
-}
-\f
-/*
- *----------------------------------------------------------------------
- *
- * DestroyScale --
- *
- * This procedure is invoked by Tcl_EventuallyFree or Tcl_Release to
- * clean up the internal structure of a button at a safe time (when
- * no-one is using it anymore).
- *
- * Results:
- * None.
- *
- * Side effects:
- * Everything associated with the scale is freed up.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-DestroyScale(
- char *memPtr) /* Info about scale widget. */
-{
- register TkScale *scalePtr = (TkScale *) memPtr;
-
- scalePtr->flags |= SCALE_DELETED;
-
- Tcl_DeleteCommandFromToken(scalePtr->interp, scalePtr->widgetCmd);
- if (scalePtr->flags & REDRAW_PENDING) {
- Tcl_CancelIdleCall(TkpDisplayScale, scalePtr);
- }
-
- /*
- * Free up all the stuff that requires special handling, then let
- * Tk_FreeOptions handle all the standard option-related stuff.
- */
-
- if (scalePtr->varNamePtr != NULL) {
- Tcl_UntraceVar2(scalePtr->interp, Tcl_GetString(scalePtr->varNamePtr),
- NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- ScaleVarProc, scalePtr);
- }
- if (scalePtr->troughGC != None) {
- Tk_FreeGC(scalePtr->display, scalePtr->troughGC);
- }
- if (scalePtr->copyGC != None) {
- Tk_FreeGC(scalePtr->display, scalePtr->copyGC);
- }
- if (scalePtr->textGC != None) {
- Tk_FreeGC(scalePtr->display, scalePtr->textGC);
- }
- Tk_FreeConfigOptions((char *) scalePtr, scalePtr->optionTable,
- scalePtr->tkwin);
- scalePtr->tkwin = NULL;
- TkpDestroyScale(scalePtr);
-}
-\f
-/*
- *----------------------------------------------------------------------
- *
- * ConfigureScale --
- *
- * This procedure is called to process an argv/argc list, plus the Tk
- * option database, in order to configure (or reconfigure) a scale
- * widget.
- *
- * Results:
- * The return value is a standard Tcl result. If TCL_ERROR is returned,
- * then the interp's result contains an error message.
- *
- * Side effects:
- * Configuration information, such as colors, border width, etc. get set
- * for scalePtr; old resources get freed, if there were any.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ConfigureScale(
- Tcl_Interp *interp, /* Used for error reporting. */
- register TkScale *scalePtr, /* Information about widget; may or may not
- * already have values for some fields. */
- int objc, /* Number of valid entries in objv. */
- Tcl_Obj *const objv[]) /* Argument values. */
-{
- Tk_SavedOptions savedOptions;
- Tcl_Obj *errorResult = NULL;
- int error;
- double varValue;
-
- /*
- * Eliminate any existing trace on a variable monitored by the scale.
- */
-
- if (scalePtr->varNamePtr != NULL) {
- Tcl_UntraceVar2(interp, Tcl_GetString(scalePtr->varNamePtr),
- NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- ScaleVarProc, scalePtr);
- }
-
- for (error = 0; error <= 1; error++) {
- if (!error) {
- /*
- * First pass: set options to new values.
- */
-
- if (Tk_SetOptions(interp, (char *) scalePtr,
- scalePtr->optionTable, objc, objv, scalePtr->tkwin,
- &savedOptions, NULL) != TCL_OK) {
- continue;
- }
- } else {
- /*
- * Second pass: restore options to old values.
- */
-
- errorResult = Tcl_GetObjResult(interp);
- Tcl_IncrRefCount(errorResult);
- Tk_RestoreSavedOptions(&savedOptions);
- }
-
- /*
- * If the scale is tied to the value of a variable, then set the
- * scale's value from the value of the variable, if it exists and it
- * holds a valid double value.
- */
-
- if (scalePtr->varNamePtr != NULL) {
- double value;
- Tcl_Obj *valuePtr;
-
- valuePtr = Tcl_ObjGetVar2(interp, scalePtr->varNamePtr, NULL,
- TCL_GLOBAL_ONLY);
- if ((valuePtr != NULL) &&
- (Tcl_GetDoubleFromObj(NULL, valuePtr, &value) == TCL_OK)) {
- scalePtr->value = TkRoundToResolution(scalePtr, value);
- }
- }
-
- /*
- * Several options need special processing, such as parsing the
- * orientation and creating GCs.
- */
-
- scalePtr->fromValue = TkRoundToResolution(scalePtr,
- scalePtr->fromValue);
- scalePtr->toValue = TkRoundToResolution(scalePtr, scalePtr->toValue);
- scalePtr->tickInterval = TkRoundToResolution(scalePtr,
- scalePtr->tickInterval);
-
- /*
- * Make sure that the tick interval has the right sign so that
- * addition moves from fromValue to toValue.
- */
-
- if ((scalePtr->tickInterval < 0)
- ^ ((scalePtr->toValue - scalePtr->fromValue) < 0)) {
- scalePtr->tickInterval = -scalePtr->tickInterval;
- }
-
- ComputeFormat(scalePtr);
-
- scalePtr->labelLength = scalePtr->label ? (int)strlen(scalePtr->label) : 0;
-
- Tk_SetBackgroundFromBorder(scalePtr->tkwin, scalePtr->bgBorder);
-
- if (scalePtr->highlightWidth < 0) {
- scalePtr->highlightWidth = 0;
- }
- scalePtr->inset = scalePtr->highlightWidth + scalePtr->borderWidth;
- break;
- }
- if (!error) {
- Tk_FreeSavedOptions(&savedOptions);
- }
-
- /*
- * Set the scale value to itself; all this does is to make sure that the
- * scale's value is within the new acceptable range for the scale. We
- * don't set the var here because we need to make special checks for
- * possibly changed varNamePtr.
- */
-
- TkScaleSetValue(scalePtr, scalePtr->value, 0, 1);
-
- /*
- * Reestablish the variable trace, if it is needed.
- */
-
- if (scalePtr->varNamePtr != NULL) {
- Tcl_Obj *valuePtr;
-
- /*
- * Set the associated variable only when the new value differs from
- * the current value, or the variable doesn't yet exist.
- */
-
- valuePtr = Tcl_ObjGetVar2(interp, scalePtr->varNamePtr, NULL,
- TCL_GLOBAL_ONLY);
- if ((valuePtr == NULL) || (Tcl_GetDoubleFromObj(NULL,
- valuePtr, &varValue) != TCL_OK)) {
- ScaleSetVariable(scalePtr);
- } else {
- char varString[TCL_DOUBLE_SPACE], scaleString[TCL_DOUBLE_SPACE];
-
- sprintf(varString, scalePtr->format, varValue);
- sprintf(scaleString, scalePtr->format, scalePtr->value);
- if (strcmp(varString, scaleString)) {
- ScaleSetVariable(scalePtr);
- }
- }
- Tcl_TraceVar2(interp, Tcl_GetString(scalePtr->varNamePtr),
- NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- ScaleVarProc, scalePtr);
- }
-
- ScaleWorldChanged(scalePtr);
- if (error) {
- Tcl_SetObjResult(interp, errorResult);
- Tcl_DecrRefCount(errorResult);
- return TCL_ERROR;
- }
- return TCL_OK;
-}
-\f
-/*
- *---------------------------------------------------------------------------
- *
- * ScaleWorldChanged --
- *
- * This procedure is called when the world has changed in some way and
- * the widget needs to recompute all its graphics contexts and determine
- * its new geometry.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Scale will be relayed out and redisplayed.
- *
- *---------------------------------------------------------------------------
- */
-
-static void
-ScaleWorldChanged(
- ClientData instanceData) /* Information about widget. */
-{
- XGCValues gcValues;
- GC gc;
- TkScale *scalePtr = instanceData;
-
- gcValues.foreground = scalePtr->troughColorPtr->pixel;
- gc = Tk_GetGC(scalePtr->tkwin, GCForeground, &gcValues);
- if (scalePtr->troughGC != None) {
- Tk_FreeGC(scalePtr->display, scalePtr->troughGC);
- }
- scalePtr->troughGC = gc;
-
- gcValues.font = Tk_FontId(scalePtr->tkfont);
- gcValues.foreground = scalePtr->textColorPtr->pixel;
- gc = Tk_GetGC(scalePtr->tkwin, GCForeground | GCFont, &gcValues);
- if (scalePtr->textGC != None) {
- Tk_FreeGC(scalePtr->display, scalePtr->textGC);
- }
- scalePtr->textGC = gc;
-
- if (scalePtr->copyGC == None) {
- gcValues.graphics_exposures = False;
- scalePtr->copyGC = Tk_GetGC(scalePtr->tkwin, GCGraphicsExposures,
- &gcValues);
- }
- scalePtr->inset = scalePtr->highlightWidth + scalePtr->borderWidth;
-
- /*
- * Recompute display-related information, and let the geometry manager
- * know how much space is needed now.
- */
-
- ComputeScaleGeometry(scalePtr);
-
- TkEventuallyRedrawScale(scalePtr, REDRAW_ALL);
-}
-\f
-/*
- *----------------------------------------------------------------------
- *
- * ComputeFormat --
- *
- * This procedure is invoked to recompute the "format" field of a scale's
- * widget record, which determines how the value of the scale is
- * converted to a string.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The format field of scalePtr is modified.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-ComputeFormat(
- TkScale *scalePtr) /* Information about scale widget. */
-{
- double maxValue, x;
- int mostSigDigit, numDigits, leastSigDigit, afterDecimal;
- int eDigits, fDigits;
-
- /*
- * Compute the displacement from the decimal of the most significant digit
- * required for any number in the scale's range.
- */
-
- maxValue = fabs(scalePtr->fromValue);
- x = fabs(scalePtr->toValue);
- if (x > maxValue) {
- maxValue = x;
- }
- if (maxValue == 0) {
- maxValue = 1;
- }
- mostSigDigit = (int) floor(log10(maxValue));
-
- /*
- * If the number of significant digits wasn't specified explicitly,
- * compute it. It's the difference between the most significant digit
- * needed to represent any number on the scale and the most significant
- * digit of the smallest difference between numbers on the scale. In other
- * words, display enough digits so that at least one digit will be
- * different between any two adjacent positions of the scale.
- */
-
- numDigits = scalePtr->digits;
- if (numDigits > TCL_MAX_PREC) {
- numDigits = 0;
- }
- if (numDigits <= 0) {
- if (scalePtr->resolution > 0) {
- /*
- * A resolution was specified for the scale, so just use it.
- */
-
- leastSigDigit = (int) floor(log10(scalePtr->resolution));
- } else {
- /*
- * No resolution was specified, so compute the difference in value
- * between adjacent pixels and use it for the least significant
- * digit.
- */
-
- x = fabs(scalePtr->fromValue - scalePtr->toValue);
- if (scalePtr->length > 0) {
- x /= scalePtr->length;
- }
- if (x > 0){
- leastSigDigit = (int) floor(log10(x));
- } else {
- leastSigDigit = 0;
- }
- }
- numDigits = mostSigDigit - leastSigDigit + 1;
- if (numDigits < 1) {
- numDigits = 1;
- }
- }
-
- /*
- * Compute the number of characters required using "e" format and "f"
- * format, and then choose whichever one takes fewer characters.
- */
-
- eDigits = numDigits + 4;
- if (numDigits > 1) {
- eDigits++; /* Decimal point. */
- }
- afterDecimal = numDigits - mostSigDigit - 1;
- if (afterDecimal < 0) {
- afterDecimal = 0;
- }
- fDigits = (mostSigDigit >= 0) ? mostSigDigit + afterDecimal : afterDecimal;
- if (afterDecimal > 0) {
- fDigits++; /* Decimal point. */
- }
- if (mostSigDigit < 0) {
- fDigits++; /* Zero to left of decimal point. */
- }
- if (fDigits <= eDigits) {
- sprintf(scalePtr->format, "%%.%df", afterDecimal);
- } else {
- sprintf(scalePtr->format, "%%.%de", numDigits-1);
- }
-}
-\f
-/*
- *----------------------------------------------------------------------
- *
- * ComputeScaleGeometry --
- *
- * This procedure is called to compute various geometrical information
- * for a scale, such as where various things get displayed. It's called
- * when the window is reconfigured.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Display-related numbers get changed in *scalePtr. The geometry manager
- * gets told about the window's preferred size.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-ComputeScaleGeometry(
- register TkScale *scalePtr) /* Information about widget. */
-{
- char valueString[TCL_DOUBLE_SPACE];
- int tmp, valuePixels, x, y, extraSpace;
- Tk_FontMetrics fm;
-
- Tk_GetFontMetrics(scalePtr->tkfont, &fm);
- scalePtr->fontHeight = fm.linespace + SPACING;
-
- /*
- * Horizontal scales are simpler than vertical ones because all sizes are
- * the same (the height of a line of text); handle them first and then
- * quit.
- */
-
- if (scalePtr->orient == ORIENT_HORIZONTAL) {
- y = scalePtr->inset;
- extraSpace = 0;
- if (scalePtr->labelLength != 0) {
- scalePtr->horizLabelY = y + SPACING;
- y += scalePtr->fontHeight;
- extraSpace = SPACING;
- }
- if (scalePtr->showValue) {
- scalePtr->horizValueY = y + SPACING;
- y += scalePtr->fontHeight;
- extraSpace = SPACING;
- } else {
- scalePtr->horizValueY = y;
- }
- y += extraSpace;
- scalePtr->horizTroughY = y;
- y += scalePtr->width + 2*scalePtr->borderWidth;
- if (scalePtr->tickInterval != 0) {
- scalePtr->horizTickY = y + SPACING;
- y += scalePtr->fontHeight + SPACING;
- }
- Tk_GeometryRequest(scalePtr->tkwin,
- scalePtr->length + 2*scalePtr->inset, y + scalePtr->inset);
- Tk_SetInternalBorder(scalePtr->tkwin, scalePtr->inset);
- return;
- }
-
- /*
- * Vertical scale: compute the amount of space needed to display the
- * scales value by formatting strings for the two end points; use
- * whichever length is longer.
- */
-
- sprintf(valueString, scalePtr->format, scalePtr->fromValue);
- valuePixels = Tk_TextWidth(scalePtr->tkfont, valueString, -1);
-
- sprintf(valueString, scalePtr->format, scalePtr->toValue);
- tmp = Tk_TextWidth(scalePtr->tkfont, valueString, -1);
- if (valuePixels < tmp) {
- valuePixels = tmp;
- }
-
- /*
- * Assign x-locations to the elements of the scale, working from left to
- * right.
- */
-
- x = scalePtr->inset;
- if ((scalePtr->tickInterval != 0) && (scalePtr->showValue)) {
- scalePtr->vertTickRightX = x + SPACING + valuePixels;
- scalePtr->vertValueRightX = scalePtr->vertTickRightX + valuePixels
- + fm.ascent/2;
- x = scalePtr->vertValueRightX + SPACING;
- } else if (scalePtr->tickInterval != 0) {
- scalePtr->vertTickRightX = x + SPACING + valuePixels;
- scalePtr->vertValueRightX = scalePtr->vertTickRightX;
- x = scalePtr->vertTickRightX + SPACING;
- } else if (scalePtr->showValue) {
- scalePtr->vertTickRightX = x;
- scalePtr->vertValueRightX = x + SPACING + valuePixels;
- x = scalePtr->vertValueRightX + SPACING;
- } else {
- scalePtr->vertTickRightX = x;
- scalePtr->vertValueRightX = x;
- }
- scalePtr->vertTroughX = x;
- x += 2*scalePtr->borderWidth + scalePtr->width;
- if (scalePtr->labelLength == 0) {
- scalePtr->vertLabelX = 0;
- } else {
- scalePtr->vertLabelX = x + fm.ascent/2;
- x = scalePtr->vertLabelX + fm.ascent/2
- + Tk_TextWidth(scalePtr->tkfont, scalePtr->label,
- scalePtr->labelLength);
- }
- Tk_GeometryRequest(scalePtr->tkwin, x + scalePtr->inset,
- scalePtr->length + 2*scalePtr->inset);
- Tk_SetInternalBorder(scalePtr->tkwin, scalePtr->inset);
-}
-\f
-/*
- *--------------------------------------------------------------
- *
- * ScaleEventProc --
- *
- * This procedure is invoked by the Tk dispatcher for various events on
- * scales.
- *
- * Results:
- * None.
- *
- * Side effects:
- * When the window gets deleted, internal structures get cleaned up.
- * When it gets exposed, it is redisplayed.
- *
- *--------------------------------------------------------------
- */
-
-static void
-ScaleEventProc(
- ClientData clientData, /* Information about window. */
- XEvent *eventPtr) /* Information about event. */
-{
- TkScale *scalePtr = clientData;
-
- if ((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0)) {
- TkEventuallyRedrawScale(scalePtr, REDRAW_ALL);
- } else if (eventPtr->type == DestroyNotify) {
- DestroyScale(clientData);
- } else if (eventPtr->type == ConfigureNotify) {
- ComputeScaleGeometry(scalePtr);
- TkEventuallyRedrawScale(scalePtr, REDRAW_ALL);
- } else if (eventPtr->type == FocusIn) {
- if (eventPtr->xfocus.detail != NotifyInferior) {
- scalePtr->flags |= GOT_FOCUS;
- if (scalePtr->highlightWidth > 0) {
- TkEventuallyRedrawScale(scalePtr, REDRAW_ALL);
- }
- }
- } else if (eventPtr->type == FocusOut) {
- if (eventPtr->xfocus.detail != NotifyInferior) {
- scalePtr->flags &= ~GOT_FOCUS;
- if (scalePtr->highlightWidth > 0) {
- TkEventuallyRedrawScale(scalePtr, REDRAW_ALL);
- }
- }
- }
-}
-\f
-/*
- *----------------------------------------------------------------------
- *
- * ScaleCmdDeletedProc --
- *
- * This procedure is invoked when a widget command is deleted. If the
- * widget isn't already in the process of being destroyed, this command
- * destroys it.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The widget is destroyed.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-ScaleCmdDeletedProc(
- ClientData clientData) /* Pointer to widget record for widget. */
-{
- TkScale *scalePtr = clientData;
- Tk_Window tkwin = scalePtr->tkwin;
-
- /*
- * This procedure could be invoked either because the window was destroyed
- * and the command was then deleted (in which case tkwin is NULL) or
- * because the command was deleted, and then this procedure destroys the
- * widget.
- */
-
- if (!(scalePtr->flags & SCALE_DELETED)) {
- scalePtr->flags |= SCALE_DELETED;
- Tk_DestroyWindow(tkwin);
- }
-}
-\f
-/*
- *--------------------------------------------------------------
- *
- * TkEventuallyRedrawScale --
- *
- * Arrange for part or all of a scale widget to redrawn at the next
- * convenient time in the future.
- *
- * Results:
- * None.
- *
- * Side effects:
- * If "what" is REDRAW_SLIDER then just the slider and the value readout
- * will be redrawn; if "what" is REDRAW_ALL then the entire widget will
- * be redrawn.
- *
- *--------------------------------------------------------------
- */
-
-void
-TkEventuallyRedrawScale(
- register TkScale *scalePtr, /* Information about widget. */
- int what) /* What to redraw: REDRAW_SLIDER or
- * REDRAW_ALL. */
-{
- if ((what == 0) || (scalePtr->tkwin == NULL)
- || !Tk_IsMapped(scalePtr->tkwin)) {
- return;
- }
- if (!(scalePtr->flags & REDRAW_PENDING)) {
- scalePtr->flags |= REDRAW_PENDING;
- Tcl_DoWhenIdle(TkpDisplayScale, scalePtr);
- }
- scalePtr->flags |= what;
-}
-\f
-/*
- *--------------------------------------------------------------
- *
- * TkRoundToResolution --
- *
- * Round a given floating-point value to the nearest multiple of the
- * scale's resolution.
- *
- * Results:
- * The return value is the rounded result.
- *
- * Side effects:
- * None.
- *
- *--------------------------------------------------------------
- */
-
-double
-TkRoundToResolution(
- TkScale *scalePtr, /* Information about scale widget. */
- double value) /* Value to round. */
-{
- double rem, rounded, tick;
-
- if (scalePtr->resolution <= 0) {
- return value;
- }
- tick = floor(value/scalePtr->resolution);
- rounded = scalePtr->resolution * tick;
- rem = value - rounded;
- if (rem < 0) {
- if (rem <= -scalePtr->resolution/2) {
- rounded = (tick - 1.0) * scalePtr->resolution;
- }
- } else {
- if (rem >= scalePtr->resolution/2) {
- rounded = (tick + 1.0) * scalePtr->resolution;
- }
- }
- return rounded;
-}
-\f
-/*
- *----------------------------------------------------------------------
- *
- * ScaleVarProc --
- *
- * This procedure is invoked by Tcl whenever someone modifies a variable
- * associated with a scale widget.
- *
- * Results:
- * NULL is always returned.
- *
- * Side effects:
- * The value displayed in the scale will change to match the variable's
- * new value. If the variable has a bogus value then it is reset to the
- * value of the scale.
- *
- *----------------------------------------------------------------------
- */
-
- /* ARGSUSED */
-static char *
-ScaleVarProc(
- ClientData clientData, /* Information about button. */
- Tcl_Interp *interp, /* Interpreter containing variable. */
- const char *name1, /* Name of variable. */
- const char *name2, /* Second part of variable name. */
- int flags) /* Information about what happened. */
-{
- register TkScale *scalePtr = clientData;
- const char *resultStr;
- double value;
- Tcl_Obj *valuePtr;
- int result;
-
- /*
- * If the variable is unset, then immediately recreate it unless the whole
- * interpreter is going away.
- */
-
- if (flags & TCL_TRACE_UNSETS) {
- if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {
- Tcl_TraceVar2(interp, Tcl_GetString(scalePtr->varNamePtr),
- NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- ScaleVarProc, clientData);
- scalePtr->flags |= NEVER_SET;
- TkScaleSetValue(scalePtr, scalePtr->value, 1, 0);
- }
- return NULL;
- }
-
- /*
- * If we came here because we updated the variable (in TkScaleSetValue),
- * then ignore the trace. Otherwise update the scale with the value of the
- * variable.
- */
-
- if (scalePtr->flags & SETTING_VAR) {
- return NULL;
- }
- resultStr = NULL;
- valuePtr = Tcl_ObjGetVar2(interp, scalePtr->varNamePtr, NULL,
- TCL_GLOBAL_ONLY);
- result = Tcl_GetDoubleFromObj(interp, valuePtr, &value);
- if (result != TCL_OK) {
- resultStr = "can't assign non-numeric value to scale variable";
- ScaleSetVariable(scalePtr);
- } else {
- scalePtr->value = TkRoundToResolution(scalePtr, value);
-
- /*
- * This code is a bit tricky because it sets the scale's value before
- * calling TkScaleSetValue. This way, TkScaleSetValue won't bother to
- * set the variable again or to invoke the -command. However, it also
- * won't redisplay the scale, so we have to ask for that explicitly.
- */
-
- TkScaleSetValue(scalePtr, scalePtr->value, 1, 0);
- }
- TkEventuallyRedrawScale(scalePtr, REDRAW_SLIDER);
-
- return (char *) resultStr;
-}
-\f
-/*
- *--------------------------------------------------------------
- *
- * TkScaleSetValue --
- *
- * This procedure changes the value of a scale and invokes a Tcl command
- * to reflect the current position of a scale
- *
- * Results:
- * None.
- *
- * Side effects:
- * A Tcl command is invoked, and an additional error-processing command
- * may also be invoked. The scale's slider is redrawn.
- *
- *--------------------------------------------------------------
- */
-
-void
-TkScaleSetValue(
- register TkScale *scalePtr, /* Info about widget. */
- double value, /* New value for scale. Gets adjusted if it's
- * off the scale. */
- int setVar, /* Non-zero means reflect new value through to
- * associated variable, if any. */
- int invokeCommand) /* Non-zero means invoked -command option to
- * notify of new value, 0 means don't. */
-{
- value = TkRoundToResolution(scalePtr, value);
- if ((value < scalePtr->fromValue)
- ^ (scalePtr->toValue < scalePtr->fromValue)) {
- value = scalePtr->fromValue;
- }
- if ((value > scalePtr->toValue)
- ^ (scalePtr->toValue < scalePtr->fromValue)) {
- value = scalePtr->toValue;
- }
- if (scalePtr->flags & NEVER_SET) {
- scalePtr->flags &= ~NEVER_SET;
- } else if (scalePtr->value == value) {
- return;
- }
- scalePtr->value = value;
- if (invokeCommand) {
- scalePtr->flags |= INVOKE_COMMAND;
- }
- TkEventuallyRedrawScale(scalePtr, REDRAW_SLIDER);
-
- if (setVar && scalePtr->varNamePtr) {
- ScaleSetVariable(scalePtr);
- }
-}
-\f
-/*
- *--------------------------------------------------------------
- *
- * ScaleSetVariable --
- *
- * This procedure sets the variable associated with a scale, if any.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Other write traces on the variable will trigger.
- *
- *--------------------------------------------------------------
- */
-
-static void
-ScaleSetVariable(
- register TkScale *scalePtr) /* Info about widget. */
-{
- if (scalePtr->varNamePtr != NULL) {
- char string[TCL_DOUBLE_SPACE];
-
- sprintf(string, scalePtr->format, scalePtr->value);
- scalePtr->flags |= SETTING_VAR;
- Tcl_ObjSetVar2(scalePtr->interp, scalePtr->varNamePtr, NULL,
- Tcl_NewStringObj(string, -1), TCL_GLOBAL_ONLY);
- scalePtr->flags &= ~SETTING_VAR;
- }
-}
-\f
-/*
- *----------------------------------------------------------------------
- *
- * TkScalePixelToValue --
- *
- * Given a pixel within a scale window, return the scale reading
- * corresponding to that pixel.
- *
- * Results:
- * A double-precision scale reading. If the value is outside the legal
- * range for the scale then it's rounded to the nearest end of the scale.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-double
-TkScalePixelToValue(
- register TkScale *scalePtr, /* Information about widget. */
- int x, int y) /* Coordinates of point within window. */
-{
- double value, pixelRange;
-
- if (scalePtr->orient == ORIENT_VERTICAL) {
- pixelRange = Tk_Height(scalePtr->tkwin) - scalePtr->sliderLength
- - 2*scalePtr->inset - 2*scalePtr->borderWidth;
- value = y;
- } else {
- pixelRange = Tk_Width(scalePtr->tkwin) - scalePtr->sliderLength
- - 2*scalePtr->inset - 2*scalePtr->borderWidth;
- value = x;
- }
-
- if (pixelRange <= 0) {
- /*
- * Not enough room for the slider to actually slide: just return the
- * scale's current value.
- */
-
- return scalePtr->value;
- }
- value -= scalePtr->sliderLength/2 + scalePtr->inset
- + scalePtr->borderWidth;
- value /= pixelRange;
- if (value < 0) {
- value = 0;
- }
- if (value > 1) {
- value = 1;
- }
- value = scalePtr->fromValue +
- value * (scalePtr->toValue - scalePtr->fromValue);
- return TkRoundToResolution(scalePtr, value);
-}
-\f
-/*
- *----------------------------------------------------------------------
- *
- * TkScaleValueToPixel --
- *
- * Given a reading of the scale, return the x-coordinate or y-coordinate
- * corresponding to that reading, depending on whether the scale is
- * vertical or horizontal, respectively.
- *
- * Results:
- * An integer value giving the pixel location corresponding to reading.
- * The value is restricted to lie within the defined range for the scale.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TkScaleValueToPixel(
- register TkScale *scalePtr, /* Information about widget. */
- double value) /* Reading of the widget. */
-{
- int y, pixelRange;
- double valueRange;
-
- valueRange = scalePtr->toValue - scalePtr->fromValue;
- pixelRange = ((scalePtr->orient == ORIENT_VERTICAL)
- ? Tk_Height(scalePtr->tkwin) : Tk_Width(scalePtr->tkwin))
- - scalePtr->sliderLength - 2*scalePtr->inset - 2*scalePtr->borderWidth;
- if (valueRange == 0) {
- y = 0;
- } else {
- y = (int) ((value - scalePtr->fromValue) * pixelRange
- / valueRange + 0.5);
- if (y < 0) {
- y = 0;
- } else if (y > pixelRange) {
- y = pixelRange;
- }
- }
- y += scalePtr->sliderLength/2 + scalePtr->inset + scalePtr->borderWidth;
- return y;
-}
-\f
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 4
- * fill-column: 78
- * End:
- */
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