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-rw-r--r--generic/tkScale.c810
1 files changed, 398 insertions, 412 deletions
diff --git a/generic/tkScale.c b/generic/tkScale.c
index 9b582fe..91e04eb 100644
--- a/generic/tkScale.c
+++ b/generic/tkScale.c
@@ -1,49 +1,45 @@
-/*
+/*
* 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.
+ * 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.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
-#include "tkPort.h"
#include "default.h"
#include "tkInt.h"
-#include "tclMath.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.
+ * 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 *orientStrings[] = {
- "horizontal", "vertical", (char *) NULL
+ "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.
+ * 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 *stateStrings[] = {
- "active", "disabled", "normal", (char *) NULL
+ "active", "disabled", "normal", NULL
};
-static Tk_OptionSpec optionSpecs[] = {
+static const Tk_OptionSpec optionSpecs[] = {
{TK_OPTION_BORDER, "-activebackground", "activeBackground", "Foreground",
DEF_SCALE_ACTIVE_BG_COLOR, -1, Tk_Offset(TkScale, activeBorder),
0, (ClientData) DEF_SCALE_ACTIVE_BG_MONO, 0},
@@ -51,42 +47,42 @@ static Tk_OptionSpec optionSpecs[] = {
DEF_SCALE_BG_COLOR, -1, Tk_Offset(TkScale, bgBorder),
0, (ClientData) 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", (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) "-borderwidth", 0},
- {TK_OPTION_SYNONYM, "-bg", (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) "-background", 0},
+ DEF_SCALE_BIG_INCREMENT, -1, Tk_Offset(TkScale, bigIncrement),
+ 0, 0, 0},
+ {TK_OPTION_SYNONYM, "-bd", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData) "-borderwidth", 0},
+ {TK_OPTION_SYNONYM, "-bg", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData) "-background", 0},
{TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
- DEF_SCALE_BORDER_WIDTH, -1, Tk_Offset(TkScale, borderWidth),
- 0, 0, 0},
+ 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", (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) "-foreground", 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, (ClientData) "-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},
+ 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, (ClientData) DEF_SCALE_HIGHLIGHT_BG_MONO, 0},
+ -1, Tk_Offset(TkScale, highlightBorder),
+ 0, (ClientData) 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,
+ "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),
@@ -94,59 +90,58 @@ static Tk_OptionSpec optionSpecs[] = {
{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, (ClientData) orientStrings, 0},
+ DEF_SCALE_ORIENT, -1, Tk_Offset(TkScale, orient),
+ 0, (ClientData) 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},
+ 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},
+ 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},
+ 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},
+ 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},
+ 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},
+ 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, (ClientData) stateStrings, 0},
+ DEF_SCALE_STATE, -1, Tk_Offset(TkScale, state),
+ 0, (ClientData) 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},
+ 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},
+ 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, (ClientData) DEF_SCALE_TROUGH_MONO, 0},
+ DEF_SCALE_TROUGH_COLOR, -1, Tk_Offset(TkScale, troughColorPtr),
+ 0, (ClientData) 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, (char *) NULL, (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 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.
+ * 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 *commandNames[] = {
- "cget", "configure", "coords", "get", "identify", "set", (char *) NULL
+ "cget", "configure", "coords", "get", "identify", "set", NULL
};
enum command {
@@ -158,25 +153,22 @@ enum command {
* Forward declarations for procedures defined later in this file:
*/
-static void ComputeFormat _ANSI_ARGS_((TkScale *scalePtr));
-static void ComputeScaleGeometry _ANSI_ARGS_((TkScale *scalePtr));
-static int ConfigureScale _ANSI_ARGS_((Tcl_Interp *interp,
- TkScale *scalePtr, int objc,
- Tcl_Obj *CONST objv[]));
-static void DestroyScale _ANSI_ARGS_((char *memPtr));
-static void ScaleCmdDeletedProc _ANSI_ARGS_((
- ClientData clientData));
-static void ScaleEventProc _ANSI_ARGS_((ClientData clientData,
- XEvent *eventPtr));
-static char * ScaleVarProc _ANSI_ARGS_((ClientData clientData,
+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 _ANSI_ARGS_((ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *CONST objv[]));
-static void ScaleWorldChanged _ANSI_ARGS_((
- ClientData instanceData));
-static void ScaleSetVariable _ANSI_ARGS_((TkScale *scalePtr));
+ 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
@@ -187,16 +179,14 @@ static Tk_ClassProcs scaleClass = {
sizeof(Tk_ClassProcs), /* size */
ScaleWorldChanged, /* worldChangedProc */
};
-
/*
*--------------------------------------------------------------
*
* Tk_ScaleObjCmd --
*
- * This procedure is invoked to process the "scale" Tcl
- * command. See the user documentation for details on what
- * it does.
+ * 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.
@@ -208,11 +198,11 @@ static Tk_ClassProcs scaleClass = {
*/
int
-Tk_ScaleObjCmd(clientData, interp, objc, objv)
- ClientData clientData; /* NULL. */
- Tcl_Interp *interp; /* Current interpreter. */
- int objc; /* Number of arguments. */
- Tcl_Obj *CONST objv[]; /* Argument values. */
+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;
@@ -224,14 +214,14 @@ Tk_ScaleObjCmd(clientData, interp, objc, objv)
}
tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp),
- Tcl_GetString(objv[1]), (char *) NULL);
+ 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.
+ * 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);
@@ -240,9 +230,9 @@ Tk_ScaleObjCmd(clientData, interp, objc, objv)
scalePtr = TkpCreateScale(tkwin);
/*
- * Initialize fields that won't be initialized by ConfigureScale,
- * or which ConfigureScale expects to have reasonable values
- * (e.g. resource pointers).
+ * Initialize fields that won't be initialized by ConfigureScale, or which
+ * ConfigureScale expects to have reasonable values (e.g. resource
+ * pointers).
*/
scalePtr->tkwin = tkwin;
@@ -320,9 +310,9 @@ Tk_ScaleObjCmd(clientData, interp, objc, objv)
*
* 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.
+ * 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.
@@ -334,157 +324,151 @@ Tk_ScaleObjCmd(clientData, interp, objc, objv)
*/
static int
-ScaleWidgetObjCmd(clientData, interp, objc, objv)
- ClientData clientData; /* Information about scale
- * widget. */
- Tcl_Interp *interp; /* Current interpreter. */
- int objc; /* Number of arguments. */
- Tcl_Obj *CONST objv[]; /* Argument strings. */
+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 = (TkScale *) clientData;
Tcl_Obj *objPtr;
int index, result;
if (objc < 2) {
- Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
+ Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
return TCL_ERROR;
}
result = Tcl_GetIndexFromObj(interp, objv[1], commandNames,
- "option", 0, &index);
+ "option", 0, &index);
if (result != TCL_OK) {
return result;
}
Tcl_Preserve((ClientData) 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);
+ 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;
+ } else {
+ 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;
+ goto error;
} else {
Tcl_SetObjResult(interp, objPtr);
}
- break;
+ } else {
+ result = ConfigureScale(interp, scalePtr, objc-2, objv+2);
}
- case COMMAND_CONFIGURE: {
- if (objc <= 3) {
- objPtr = Tk_GetOptionInfo(interp, (char *) scalePtr,
- scalePtr->optionTable,
- (objc == 3) ? objv[2] : (Tcl_Obj *) NULL,
- scalePtr->tkwin);
- if (objPtr == NULL) {
- goto error;
- } else {
- Tcl_SetObjResult(interp, objPtr);
- }
- } else {
- result = ConfigureScale(interp, scalePtr, objc-2, objv+2);
- }
- break;
+ break;
+ case COMMAND_COORDS: {
+ int x, y ;
+ double value;
+ char buf[TCL_INTEGER_SPACE * 2];
+
+ if ((objc != 2) && (objc != 3)) {
+ Tcl_WrongNumArgs(interp, 1, objv, "coords ?value?");
+ goto error;
}
- case COMMAND_COORDS: {
- int x, y ;
- double value;
- char buf[TCL_INTEGER_SPACE * 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;
- }
- sprintf(buf, "%d %d", x, y);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- break;
- }
- case COMMAND_GET: {
- double value;
- int x, y;
- char buf[TCL_DOUBLE_SPACE];
-
- if ((objc != 2) && (objc != 4)) {
- Tcl_WrongNumArgs(interp, 1, objv, "get ?x y?");
+ if (objc == 3) {
+ if (Tcl_GetDoubleFromObj(interp, objv[2], &value) != TCL_OK) {
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);
- }
- sprintf(buf, scalePtr->format, value);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- break;
- }
- case COMMAND_IDENTIFY: {
- int x, y, thing;
-
- if (objc != 4) {
- Tcl_WrongNumArgs(interp, 1, objv, "identify x y");
+ } 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;
+ }
+ sprintf(buf, "%d %d", x, y);
+ Tcl_SetResult(interp, buf, TCL_VOLATILE);
+ break;
+ }
+ case COMMAND_GET: {
+ double value;
+ int x, y;
+ char buf[TCL_DOUBLE_SPACE];
+
+ 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;
}
- if ((Tcl_GetIntFromObj(interp, objv[2], &x) != TCL_OK)
- || (Tcl_GetIntFromObj(interp, objv[3], &y) != TCL_OK)) {
- goto error;
- }
- thing = TkpScaleElement(scalePtr, x,y);
- switch (thing) {
- case TROUGH1:
- Tcl_SetResult(interp, "trough1", TCL_STATIC);
- break;
- case SLIDER:
- Tcl_SetResult(interp, "slider", TCL_STATIC);
- break;
- case TROUGH2:
- Tcl_SetResult(interp, "trough2", TCL_STATIC);
- break;
- }
- break;
- }
- case COMMAND_SET: {
- double value;
+ value = TkScalePixelToValue(scalePtr, x, y);
+ }
+ sprintf(buf, scalePtr->format, value);
+ Tcl_SetResult(interp, buf, TCL_VOLATILE);
+ break;
+ }
+ case COMMAND_IDENTIFY: {
+ int x, y, thing;
- 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);
- }
+ 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;
+ }
+ thing = TkpScaleElement(scalePtr, x,y);
+ switch (thing) {
+ case TROUGH1:
+ Tcl_SetResult(interp, "trough1", TCL_STATIC);
+ break;
+ case SLIDER:
+ Tcl_SetResult(interp, "slider", TCL_STATIC);
break;
- }
+ case TROUGH2:
+ Tcl_SetResult(interp, "trough2", TCL_STATIC);
+ break;
+ }
+ 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((ClientData) scalePtr);
return result;
- error:
+ error:
Tcl_Release((ClientData) scalePtr);
return TCL_ERROR;
}
@@ -494,9 +478,9 @@ ScaleWidgetObjCmd(clientData, interp, objc, objv)
*
* 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).
+ * 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.
@@ -508,8 +492,8 @@ ScaleWidgetObjCmd(clientData, interp, objc, objv)
*/
static void
-DestroyScale(memPtr)
- char *memPtr; /* Info about scale widget. */
+DestroyScale(
+ char *memPtr) /* Info about scale widget. */
{
register TkScale *scalePtr = (TkScale *) memPtr;
@@ -521,9 +505,8 @@ DestroyScale(memPtr)
}
/*
- * Free up all the stuff that requires special handling, then
- * let Tk_FreeOptions handle all the standard option-related
- * stuff.
+ * Free up all the stuff that requires special handling, then let
+ * Tk_FreeOptions handle all the standard option-related stuff.
*/
if (scalePtr->varNamePtr != NULL) {
@@ -551,29 +534,28 @@ DestroyScale(memPtr)
*
* 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.
+ * 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.
+ * 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.
+ * Configuration information, such as colors, border width, etc. get set
+ * for scalePtr; old resources get freed, if there were any.
*
*----------------------------------------------------------------------
*/
static int
-ConfigureScale(interp, scalePtr, objc, objv)
- 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. */
+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;
@@ -598,7 +580,7 @@ ConfigureScale(interp, scalePtr, objc, objv)
if (Tk_SetOptions(interp, (char *) scalePtr,
scalePtr->optionTable, objc, objv,
- scalePtr->tkwin, &savedOptions, (int *) NULL) != TCL_OK) {
+ scalePtr->tkwin, &savedOptions, NULL) != TCL_OK) {
continue;
}
} else {
@@ -612,9 +594,9 @@ ConfigureScale(interp, scalePtr, objc, objv)
}
/*
- * 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 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) {
@@ -634,11 +616,11 @@ ConfigureScale(interp, scalePtr, objc, objv)
* orientation and creating GCs.
*/
- scalePtr->fromValue = TkRoundToResolution(scalePtr,
- scalePtr->fromValue);
+ scalePtr->fromValue = TkRoundToResolution(scalePtr,
+ scalePtr->fromValue);
scalePtr->toValue = TkRoundToResolution(scalePtr, scalePtr->toValue);
scalePtr->tickInterval = TkRoundToResolution(scalePtr,
- scalePtr->tickInterval);
+ scalePtr->tickInterval);
/*
* Make sure that the tick interval has the right sign so that
@@ -646,13 +628,13 @@ ConfigureScale(interp, scalePtr, objc, objv)
*/
if ((scalePtr->tickInterval < 0)
- ^ ((scalePtr->toValue - scalePtr->fromValue) < 0)) {
- scalePtr->tickInterval = -scalePtr->tickInterval;
+ ^ ((scalePtr->toValue - scalePtr->fromValue) < 0)) {
+ scalePtr->tickInterval = -scalePtr->tickInterval;
}
ComputeFormat(scalePtr);
- scalePtr->labelLength = scalePtr->label ? strlen(scalePtr->label) : 0;
+ scalePtr->labelLength = scalePtr->label ? (int)strlen(scalePtr->label) : 0;
Tk_SetBackgroundFromBorder(scalePtr->tkwin, scalePtr->bgBorder);
@@ -663,14 +645,14 @@ ConfigureScale(interp, scalePtr, objc, objv)
break;
}
if (!error) {
- Tk_FreeSavedOptions(&savedOptions);
+ 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.
+ * 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);
@@ -683,36 +665,36 @@ ConfigureScale(interp, scalePtr, objc, objv)
Tcl_Obj *valuePtr;
/*
- * Set the associated variable only when the new value differs
- * from the current value, or the variable doesn't yet exist
+ * 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];
- char scaleString[TCL_DOUBLE_SPACE];
+ 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_TraceVar(interp, Tcl_GetString(scalePtr->varNamePtr),
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- ScaleVarProc, (ClientData) scalePtr);
+ Tcl_TraceVar(interp, Tcl_GetString(scalePtr->varNamePtr),
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ScaleVarProc, (ClientData) scalePtr);
}
ScaleWorldChanged((ClientData) scalePtr);
if (error) {
- Tcl_SetObjResult(interp, errorResult);
+ Tcl_SetObjResult(interp, errorResult);
Tcl_DecrRefCount(errorResult);
return TCL_ERROR;
- } else {
- return TCL_OK;
}
+ return TCL_OK;
}
/*
@@ -720,22 +702,22 @@ ConfigureScale(interp, scalePtr, objc, objv)
*
* 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.
+ * 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.
+ * None.
*
* Side effects:
- * Scale will be relayed out and redisplayed.
+ * Scale will be relayed out and redisplayed.
*
*---------------------------------------------------------------------------
*/
-
+
static void
-ScaleWorldChanged(instanceData)
- ClientData instanceData; /* Information about widget. */
+ScaleWorldChanged(
+ ClientData instanceData) /* Information about widget. */
{
XGCValues gcValues;
GC gc;
@@ -761,13 +743,13 @@ ScaleWorldChanged(instanceData)
if (scalePtr->copyGC == None) {
gcValues.graphics_exposures = False;
scalePtr->copyGC = Tk_GetGC(scalePtr->tkwin, GCGraphicsExposures,
- &gcValues);
+ &gcValues);
}
scalePtr->inset = scalePtr->highlightWidth + scalePtr->borderWidth;
/*
- * Recompute display-related information, and let the geometry
- * manager know how much space is needed now.
+ * Recompute display-related information, and let the geometry manager
+ * know how much space is needed now.
*/
ComputeScaleGeometry(scalePtr);
@@ -780,9 +762,9 @@ ScaleWorldChanged(instanceData)
*
* 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.
+ * 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.
@@ -794,16 +776,16 @@ ScaleWorldChanged(instanceData)
*/
static void
-ComputeFormat(scalePtr)
- TkScale *scalePtr; /* Information about scale widget. */
+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.
+ * Compute the displacement from the decimal of the most significant digit
+ * required for any number in the scale's range.
*/
maxValue = fabs(scalePtr->fromValue);
@@ -818,17 +800,16 @@ ComputeFormat(scalePtr)
/*
* 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.
+ * 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 <= 0) {
- if (scalePtr->resolution > 0) {
+ if (scalePtr->resolution > 0) {
/*
* A resolution was specified for the scale, so just use it.
*/
@@ -836,9 +817,9 @@ ComputeFormat(scalePtr)
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.
+ * 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);
@@ -858,8 +839,8 @@ ComputeFormat(scalePtr)
}
/*
- * Compute the number of characters required using "e" format and
- * "f" format, and then choose whichever one takes fewer characters.
+ * Compute the number of characters required using "e" format and "f"
+ * format, and then choose whichever one takes fewer characters.
*/
eDigits = numDigits + 4;
@@ -889,23 +870,23 @@ ComputeFormat(scalePtr)
*
* 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.
+ * 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.
+ * Display-related numbers get changed in *scalePtr. The geometry manager
+ * gets told about the window's preferred size.
*
*----------------------------------------------------------------------
*/
static void
-ComputeScaleGeometry(scalePtr)
- register TkScale *scalePtr; /* Information about widget. */
+ComputeScaleGeometry(
+ register TkScale *scalePtr) /* Information about widget. */
{
char valueString[PRINT_CHARS];
int tmp, valuePixels, x, y, extraSpace;
@@ -915,9 +896,9 @@ ComputeScaleGeometry(scalePtr)
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.
+ * 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) {
@@ -949,9 +930,9 @@ ComputeScaleGeometry(scalePtr)
}
/*
- * 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.
+ * 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);
@@ -964,8 +945,8 @@ ComputeScaleGeometry(scalePtr)
}
/*
- * Assign x-locations to the elements of the scale, working from
- * left to right.
+ * Assign x-locations to the elements of the scale, working from left to
+ * right.
*/
x = scalePtr->inset;
@@ -1006,23 +987,23 @@ ComputeScaleGeometry(scalePtr)
*
* ScaleEventProc --
*
- * This procedure is invoked by the Tk dispatcher for various
- * events on scales.
+ * 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.
+ * When the window gets deleted, internal structures get cleaned up.
+ * When it gets exposed, it is redisplayed.
*
*--------------------------------------------------------------
*/
static void
-ScaleEventProc(clientData, eventPtr)
- ClientData clientData; /* Information about window. */
- XEvent *eventPtr; /* Information about event. */
+ScaleEventProc(
+ ClientData clientData, /* Information about window. */
+ XEvent *eventPtr) /* Information about event. */
{
TkScale *scalePtr = (TkScale *) clientData;
@@ -1055,9 +1036,9 @@ ScaleEventProc(clientData, eventPtr)
*
* 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.
+ * 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.
@@ -1069,17 +1050,17 @@ ScaleEventProc(clientData, eventPtr)
*/
static void
-ScaleCmdDeletedProc(clientData)
- ClientData clientData; /* Pointer to widget record for widget. */
+ScaleCmdDeletedProc(
+ ClientData clientData) /* Pointer to widget record for widget. */
{
TkScale *scalePtr = (TkScale *) 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.
+ * 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)) {
@@ -1093,25 +1074,25 @@ ScaleCmdDeletedProc(clientData)
*
* TkEventuallyRedrawScale --
*
- * Arrange for part or all of a scale widget to redrawn at
- * the next convenient time in the future.
+ * 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.
+ * 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(scalePtr, what)
- register TkScale *scalePtr; /* Information about widget. */
- int what; /* What to redraw: REDRAW_SLIDER
- * or REDRAW_ALL. */
+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)) {
@@ -1129,8 +1110,8 @@ TkEventuallyRedrawScale(scalePtr, what)
*
* TkRoundToResolution --
*
- * Round a given floating-point value to the nearest multiple
- * of the scale's resolution.
+ * Round a given floating-point value to the nearest multiple of the
+ * scale's resolution.
*
* Results:
* The return value is the rounded result.
@@ -1142,28 +1123,28 @@ TkEventuallyRedrawScale(scalePtr, what)
*/
double
-TkRoundToResolution(scalePtr, value)
- TkScale *scalePtr; /* Information about scale widget. */
- double value; /* Value to round. */
+TkRoundToResolution(
+ TkScale *scalePtr, /* Information about scale widget. */
+ double value) /* Value to round. */
{
- double rem, new, tick;
+ double rem, rounded, tick;
if (scalePtr->resolution <= 0) {
return value;
}
tick = floor(value/scalePtr->resolution);
- new = scalePtr->resolution * tick;
- rem = value - new;
+ rounded = scalePtr->resolution * tick;
+ rem = value - rounded;
if (rem < 0) {
if (rem <= -scalePtr->resolution/2) {
- new = (tick - 1.0) * scalePtr->resolution;
+ rounded = (tick - 1.0) * scalePtr->resolution;
}
} else {
if (rem >= scalePtr->resolution/2) {
- new = (tick + 1.0) * scalePtr->resolution;
+ rounded = (tick + 1.0) * scalePtr->resolution;
}
}
- return new;
+ return rounded;
}
/*
@@ -1171,28 +1152,28 @@ TkRoundToResolution(scalePtr, value)
*
* ScaleVarProc --
*
- * This procedure is invoked by Tcl whenever someone modifies a
- * variable associated with a scale widget.
+ * 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.
+ * 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, interp, name1, name2, flags)
- 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. */
+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 = (TkScale *) clientData;
char *resultStr;
@@ -1201,8 +1182,8 @@ ScaleVarProc(clientData, interp, name1, name2, flags)
int result;
/*
- * If the variable is unset, then immediately recreate it unless
- * the whole interpreter is going away.
+ * If the variable is unset, then immediately recreate it unless the whole
+ * interpreter is going away.
*/
if (flags & TCL_TRACE_UNSETS) {
@@ -1213,34 +1194,33 @@ ScaleVarProc(clientData, interp, name1, name2, flags)
scalePtr->flags |= NEVER_SET;
TkScaleSetValue(scalePtr, scalePtr->value, 1, 0);
}
- return (char *) NULL;
+ 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.
+ * then ignore the trace. Otherwise update the scale with the value of the
+ * variable.
*/
if (scalePtr->flags & SETTING_VAR) {
- return (char *) NULL;
+ return NULL;
}
resultStr = NULL;
- valuePtr = Tcl_ObjGetVar2(interp, scalePtr->varNamePtr, NULL,
- TCL_GLOBAL_ONLY);
+ 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";
+ 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.
+ * 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);
@@ -1255,28 +1235,28 @@ ScaleVarProc(clientData, interp, name1, name2, flags)
*
* TkScaleSetValue --
*
- * This procedure changes the value of a scale and invokes
- * a Tcl command to reflect the current position of a scale
+ * 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.
+ * A Tcl command is invoked, and an additional error-processing command
+ * may also be invoked. The scale's slider is redrawn.
*
*--------------------------------------------------------------
*/
void
-TkScaleSetValue(scalePtr, value, setVar, invokeCommand)
- 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. */
+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)
@@ -1320,11 +1300,12 @@ TkScaleSetValue(scalePtr, value, setVar, invokeCommand)
*/
static void
-ScaleSetVariable(scalePtr)
- register TkScale *scalePtr; /* Info about widget. */
+ScaleSetVariable(
+ register TkScale *scalePtr) /* Info about widget. */
{
if (scalePtr->varNamePtr != NULL) {
char string[PRINT_CHARS];
+
sprintf(string, scalePtr->format, scalePtr->value);
scalePtr->flags |= SETTING_VAR;
Tcl_ObjSetVar2(scalePtr->interp, scalePtr->varNamePtr, NULL,
@@ -1338,13 +1319,12 @@ ScaleSetVariable(scalePtr)
*
* TkScalePixelToValue --
*
- * Given a pixel within a scale window, return the scale
- * reading corresponding to that pixel.
+ * 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.
+ * 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.
@@ -1353,10 +1333,9 @@ ScaleSetVariable(scalePtr)
*/
double
-TkScalePixelToValue(scalePtr, x, y)
- register TkScale *scalePtr; /* Information about widget. */
- int x, y; /* Coordinates of point within
- * window. */
+TkScalePixelToValue(
+ register TkScale *scalePtr, /* Information about widget. */
+ int x, int y) /* Coordinates of point within window. */
{
double value, pixelRange;
@@ -1372,14 +1351,14 @@ TkScalePixelToValue(scalePtr, x, y)
if (pixelRange <= 0) {
/*
- * Not enough room for the slider to actually slide: just return
- * the scale's current value.
+ * 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;
+ + scalePtr->borderWidth;
value /= pixelRange;
if (value < 0) {
value = 0;
@@ -1397,14 +1376,13 @@ TkScalePixelToValue(scalePtr, x, y)
*
* 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.
+ * 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.
+ * 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.
@@ -1413,9 +1391,9 @@ TkScalePixelToValue(scalePtr, x, y)
*/
int
-TkScaleValueToPixel(scalePtr, value)
- register TkScale *scalePtr; /* Information about widget. */
- double value; /* Reading of the widget. */
+TkScaleValueToPixel(
+ register TkScale *scalePtr, /* Information about widget. */
+ double value) /* Reading of the widget. */
{
int y, pixelRange;
double valueRange;
@@ -1428,7 +1406,7 @@ TkScaleValueToPixel(scalePtr, value)
y = 0;
} else {
y = (int) ((value - scalePtr->fromValue) * pixelRange
- / valueRange + 0.5);
+ / valueRange + 0.5);
if (y < 0) {
y = 0;
} else if (y > pixelRange) {
@@ -1438,3 +1416,11 @@ TkScaleValueToPixel(scalePtr, value)
y += scalePtr->sliderLength/2 + scalePtr->inset + scalePtr->borderWidth;
return y;
}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
generated by cgit v0.12 at 2024-07-08 20:42:43 (GMT)