/*
* tkCanvUtil.c --
*
* This file contains a collection of utility functions used by the
* implementations of various canvas item types.
*
* Copyright (c) 1994 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"
#include "tkCanvas.h"
/*
* Structures defined only in this file.
*/
typedef struct SmoothAssocData {
struct SmoothAssocData *nextPtr;
/* Pointer to next SmoothAssocData. */
Tk_SmoothMethod smooth; /* Name and functions associated with this
* option. */
} SmoothAssocData;
const Tk_SmoothMethod tkBezierSmoothMethod = {
"true",
TkMakeBezierCurve,
(void (*) (Tcl_Interp *interp, Tk_Canvas canvas, double *coordPtr,
int numPoints, int numSteps))(void *)TkMakeBezierPostscript,
};
static const Tk_SmoothMethod tkRawSmoothMethod = {
"raw",
TkMakeRawCurve,
(void (*) (Tcl_Interp *interp, Tk_Canvas canvas, double *coordPtr,
int numPoints, int numSteps))(void *)TkMakeRawCurvePostscript,
};
/*
* Function forward-declarations.
*/
static void SmoothMethodCleanupProc(ClientData clientData,
Tcl_Interp *interp);
static SmoothAssocData *InitSmoothMethods(Tcl_Interp *interp);
static int DashConvert(char *l, const char *p, int n,
double width);
static void TranslateAndAppendCoords(TkCanvas *canvPtr,
double x, double y, XPoint *outArr, int numOut);
static inline Tcl_Obj * GetPostscriptBuffer(Tcl_Interp *interp);
#define ABS(a) ((a>=0)?(a):(-(a)))
static inline Tcl_Obj *
GetPostscriptBuffer(
Tcl_Interp *interp)
{
Tcl_Obj *psObj = Tcl_GetObjResult(interp);
if (Tcl_IsShared(psObj)) {
psObj = Tcl_DuplicateObj(psObj);
Tcl_SetObjResult(interp, psObj);
}
return psObj;
}
/*
*----------------------------------------------------------------------
*
* Tk_CanvasTkwin --
*
* Given a token for a canvas, this function returns the widget that
* represents the canvas.
*
* Results:
* The return value is a handle for the widget.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
Tk_Window
Tk_CanvasTkwin(
Tk_Canvas canvas) /* Token for the canvas. */
{
return Canvas(canvas)->tkwin;
}
/*
*----------------------------------------------------------------------
*
* Tk_CanvasDrawableCoords --
*
* Given an (x,y) coordinate pair within a canvas, this function
* returns the corresponding coordinates at which the point should
* be drawn in the drawable used for display.
*
* Results:
* There is no return value. The values at *drawableXPtr and
* *drawableYPtr are filled in with the coordinates at which x and y
* should be drawn. These coordinates are clipped to fit within a
* "short", since this is what X uses in most cases for drawing.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
Tk_CanvasDrawableCoords(
Tk_Canvas canvas, /* Token for the canvas. */
double x, /* Coordinates in canvas space. */
double y,
short *drawableXPtr, /* Screen coordinates are stored here. */
short *drawableYPtr)
{
double tmp;
tmp = x - Canvas(canvas)->drawableXOrigin;
if (tmp > 0) {
tmp += 0.5;
} else {
tmp -= 0.5;
}
if (tmp > 32767) {
*drawableXPtr = 32767;
} else if (tmp < -32768) {
*drawableXPtr = -32768;
} else {
*drawableXPtr = (short) tmp;
}
tmp = y - Canvas(canvas)->drawableYOrigin;
if (tmp > 0) {
tmp += 0.5;
} else {
tmp -= 0.5;
}
if (tmp > 32767) {
*drawableYPtr = 32767;
} else if (tmp < -32768) {
*drawableYPtr = -32768;
} else {
*drawableYPtr = (short) tmp;
}
}
/*
*----------------------------------------------------------------------
*
* Tk_CanvasWindowCoords --
*
* Given an (x,y) coordinate pair within a canvas, this function returns
* the corresponding coordinates in the canvas's window.
*
* Results:
* There is no return value. The values at *screenXPtr and *screenYPtr
* are filled in with the coordinates at which (x,y) appears in the
* canvas's window. These coordinates are clipped to fit within a
* "short", since this is what X uses in most cases for drawing.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
Tk_CanvasWindowCoords(
Tk_Canvas canvas, /* Token for the canvas. */
double x, /* Coordinates in canvas space. */
double y,
short *screenXPtr, /* Screen coordinates are stored here. */
short *screenYPtr)
{
double tmp;
tmp = x - Canvas(canvas)->xOrigin;
if (tmp > 0) {
tmp += 0.5;
} else {
tmp -= 0.5;
}
if (tmp > 32767) {
*screenXPtr = 32767;
} else if (tmp < -32768) {
*screenXPtr = -32768;
} else {
*screenXPtr = (short) tmp;
}
tmp = y - Canvas(canvas)->yOrigin;
if (tmp > 0) {
tmp += 0.5;
} else {
tmp -= 0.5;
}
if (tmp > 32767) {
*screenYPtr = 32767;
} else if (tmp < -32768) {
*screenYPtr = -32768;
} else {
*screenYPtr = (short) tmp;
}
}
/*
*--------------------------------------------------------------
*
* Tk_CanvasGetCoord --
*
* Given a string, returns a floating-point canvas coordinate
* corresponding to that string.
*
* Results:
* The return value is a standard Tcl return result. If TCL_OK is
* returned, then everything went well and the canvas coordinate is
* stored at *doublePtr; otherwise TCL_ERROR is returned and an error
* message is left in the interp's result.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
int
Tk_CanvasGetCoord(
Tcl_Interp *interp, /* Interpreter for error reporting. */
Tk_Canvas canvas, /* Canvas to which coordinate applies. */
const char *string, /* Describes coordinate (any screen coordinate
* form may be used here). */
double *doublePtr) /* Place to store converted coordinate. */
{
if (Tk_GetScreenMM(Canvas(canvas)->interp, Canvas(canvas)->tkwin, string,
doublePtr) != TCL_OK) {
return TCL_ERROR;
}
*doublePtr *= Canvas(canvas)->pixelsPerMM;
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* Tk_CanvasGetCoordFromObj --
*
* Given a string, returns a floating-point canvas coordinate
* corresponding to that string.
*
* Results:
* The return value is a standard Tcl return result. If TCL_OK is
* returned, then everything went well and the canvas coordinate is
* stored at *doublePtr; otherwise TCL_ERROR is returned and an error
* message is left in interp->result.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
int
Tk_CanvasGetCoordFromObj(
Tcl_Interp *interp, /* Interpreter for error reporting. */
Tk_Canvas canvas, /* Canvas to which coordinate applies. */
Tcl_Obj *obj, /* Describes coordinate (any screen coordinate
* form may be used here). */
double *doublePtr) /* Place to store converted coordinate. */
{
return Tk_GetDoublePixelsFromObj(Canvas(canvas)->interp, Canvas(canvas)->tkwin, obj, doublePtr);
}
/*
*----------------------------------------------------------------------
*
* Tk_CanvasSetStippleOrigin --
*
* This function sets the stipple origin in a graphics context so that
* stipples drawn with the GC will line up with other stipples previously
* drawn in the canvas.
*
* Results:
* None.
*
* Side effects:
* The graphics context is modified.
*
*----------------------------------------------------------------------
*/
void
Tk_CanvasSetStippleOrigin(
Tk_Canvas canvas, /* Token for a canvas. */
GC gc) /* Graphics context that is about to be used
* to draw a stippled pattern as part of
* redisplaying the canvas. */
{
XSetTSOrigin(Canvas(canvas)->display, gc,
-Canvas(canvas)->drawableXOrigin,
-Canvas(canvas)->drawableYOrigin);
}
/*
*----------------------------------------------------------------------
*
* Tk_CanvasSetOffset--
*
* This function sets the stipple offset in a graphics context so that
* stipples drawn with the GC will line up with other stipples with the
* same offset.
*
* Results:
* None.
*
* Side effects:
* The graphics context is modified.
*
*----------------------------------------------------------------------
*/
void
Tk_CanvasSetOffset(
Tk_Canvas canvas, /* Token for a canvas. */
GC gc, /* Graphics context that is about to be used
* to draw a stippled pattern as part of
* redisplaying the canvas. */
Tk_TSOffset *offset) /* Offset (may be NULL pointer)*/
{
register TkCanvas *canvasPtr = Canvas(canvas);
int flags = 0;
int x = - canvasPtr->drawableXOrigin;
int y = - canvasPtr->drawableYOrigin;
if (offset != NULL) {
flags = offset->flags;
x += offset->xoffset;
y += offset->yoffset;
}
if ((flags & TK_OFFSET_RELATIVE) && !(flags & TK_OFFSET_INDEX)) {
Tk_SetTSOrigin(canvasPtr->tkwin, gc, x - canvasPtr->xOrigin,
y - canvasPtr->yOrigin);
} else {
XSetTSOrigin(canvasPtr->display, gc, x, y);
}
}
/*
*----------------------------------------------------------------------
*
* Tk_CanvasGetTextInfo --
*
* This function returns a pointer to a structure containing information
* about the selection and insertion cursor for a canvas widget. Items
* such as text items save the pointer and use it to share access to the
* information with the generic canvas code.
*
* Results:
* The return value is a pointer to the structure holding text
* information for the canvas. Most of the fields should not be modified
* outside the generic canvas code; see the user documentation for
* details.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
Tk_CanvasTextInfo *
Tk_CanvasGetTextInfo(
Tk_Canvas canvas) /* Token for the canvas widget. */
{
return &Canvas(canvas)->textInfo;
}
/*
*--------------------------------------------------------------
*
* Tk_CanvasTagsParseProc --
*
* This function is invoked during option processing to handle "-tags"
* options for canvas items.
*
* Results:
* A standard Tcl return value.
*
* Side effects:
* The tags for a given item get replaced by those indicated in the value
* argument.
*
*--------------------------------------------------------------
*/
int
Tk_CanvasTagsParseProc(
ClientData clientData, /* Not used.*/
Tcl_Interp *interp, /* Used for reporting errors. */
Tk_Window tkwin, /* Window containing canvas widget. */
const char *value, /* Value of option (list of tag names). */
char *widgRec, /* Pointer to record for item. */
int offset) /* Offset into item (ignored). */
{
register Tk_Item *itemPtr = (Tk_Item *) widgRec;
int argc, i;
const char **argv;
Tk_Uid *newPtr;
/*
* Break the value up into the individual tag names.
*/
if (Tcl_SplitList(interp, value, &argc, &argv) != TCL_OK) {
return TCL_ERROR;
}
/*
* Make sure that there's enough space in the item to hold the tag names.
*/
if (itemPtr->tagSpace < argc) {
newPtr = ckalloc(argc * sizeof(Tk_Uid));
for (i = itemPtr->numTags-1; i >= 0; i--) {
newPtr[i] = itemPtr->tagPtr[i];
}
if (itemPtr->tagPtr != itemPtr->staticTagSpace) {
ckfree(itemPtr->tagPtr);
}
itemPtr->tagPtr = newPtr;
itemPtr->tagSpace = argc;
}
itemPtr->numTags = argc;
for (i = 0; i < argc; i++) {
itemPtr->tagPtr[i] = Tk_GetUid(argv[i]);
}
ckfree(argv);
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* Tk_CanvasTagsPrintProc --
*
* This function is invoked by the Tk configuration code to produce a
* printable string for the "-tags" configuration option for canvas
* items.
*
* Results:
* The return value is a string describing all the tags 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.
*
*--------------------------------------------------------------
*/
const char *
Tk_CanvasTagsPrintProc(
ClientData clientData, /* Ignored. */
Tk_Window tkwin, /* Window containing canvas widget. */
char *widgRec, /* Pointer to record for item. */
int offset, /* Ignored. */
Tcl_FreeProc **freeProcPtr) /* Pointer to variable to fill in with
* information about how to reclaim storage
* for return string. */
{
register Tk_Item *itemPtr = (Tk_Item *) widgRec;
if (itemPtr->numTags == 0) {
*freeProcPtr = NULL;
return "";
}
if (itemPtr->numTags == 1) {
*freeProcPtr = NULL;
return (const char *) itemPtr->tagPtr[0];
}
*freeProcPtr = TCL_DYNAMIC;
return Tcl_Merge(itemPtr->numTags, (const char **) itemPtr->tagPtr);
}
/*
*--------------------------------------------------------------
*
* TkCanvasDashParseProc --
*
* This function is invoked during option processing to handle "-dash",
* "-activedash" and "-disableddash" options for canvas objects.
*
* Results:
* A standard Tcl return value.
*
* Side effects:
* The dash list for a given canvas object gets replaced by those
* indicated in the value argument.
*
*--------------------------------------------------------------
*/
int
TkCanvasDashParseProc(
ClientData clientData, /* Not used.*/
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. */
{
return Tk_GetDash(interp, value, (Tk_Dash *) (widgRec+offset));
}
/*
*--------------------------------------------------------------
*
* TkCanvasDashPrintProc --
*
* This function is invoked by the Tk configuration code to produce a
* printable string for the "-dash", "-activedash" and "-disableddash"
* configuration options for canvas items.
*
* Results:
* The return value is a string describing all the dash list for the item
* referred to by "widgRec"and "offset". 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.
*
*--------------------------------------------------------------
*/
const char *
TkCanvasDashPrintProc(
ClientData clientData, /* Ignored. */
Tk_Window tkwin, /* Window containing canvas widget. */
char *widgRec, /* Pointer to record for item. */
int offset, /* Offset in record for item. */
Tcl_FreeProc **freeProcPtr) /* Pointer to variable to fill in with
* information about how to reclaim storage
* for return string. */
{
Tk_Dash *dash = (Tk_Dash *) (widgRec+offset);
char *buffer, *p;
int i = dash->number;
if (i < 0) {
i = -i;
*freeProcPtr = TCL_DYNAMIC;
buffer = ckalloc(i + 1);
p = (i > (int)sizeof(char *)) ? dash->pattern.pt : dash->pattern.array;
memcpy(buffer, p, (unsigned int) i);
buffer[i] = 0;
return buffer;
} else if (!i) {
*freeProcPtr = NULL;
return "";
}
buffer = ckalloc(4 * i);
*freeProcPtr = TCL_DYNAMIC;
p = (i > (int)sizeof(char *)) ? dash->pattern.pt : dash->pattern.array;
sprintf(buffer, "%d", *p++ & 0xff);
while (--i) {
sprintf(buffer+strlen(buffer), " %d", *p++ & 0xff);
}
return buffer;
}
/*
*--------------------------------------------------------------
*
* InitSmoothMethods --
*
* This function is invoked to set up the initial state of the list of
* "-smooth" methods. It should only be called when the list installed
* in the interpreter is NULL.
*
* Results:
* Pointer to the start of the list of default smooth methods.
*
* Side effects:
* A linked list of smooth methods is created and attached to the
* interpreter's association key "smoothMethod"
*
*--------------------------------------------------------------
*/
static SmoothAssocData *
InitSmoothMethods(
Tcl_Interp *interp)
{
SmoothAssocData *methods, *ptr;
methods = ckalloc(sizeof(SmoothAssocData));
methods->smooth.name = tkRawSmoothMethod.name;
methods->smooth.coordProc = tkRawSmoothMethod.coordProc;
methods->smooth.postscriptProc = tkRawSmoothMethod.postscriptProc;
ptr = methods->nextPtr = ckalloc(sizeof(SmoothAssocData));
ptr->smooth.name = tkBezierSmoothMethod.name;
ptr->smooth.coordProc = tkBezierSmoothMethod.coordProc;
ptr->smooth.postscriptProc = tkBezierSmoothMethod.postscriptProc;
ptr->nextPtr = NULL;
Tcl_SetAssocData(interp, "smoothMethod", SmoothMethodCleanupProc,methods);
return methods;
}
/*
*--------------------------------------------------------------
*
* Tk_CreateSmoothMethod --
*
* This function is invoked to add additional values for the "-smooth"
* option to the list.
*
* Results:
* A standard Tcl return value.
*
* Side effects:
* In the future "-smooth <name>" will be accepted as smooth method for
* the line and polygon.
*
*--------------------------------------------------------------
*/
void
Tk_CreateSmoothMethod(
Tcl_Interp *interp,
const Tk_SmoothMethod *smooth)
{
SmoothAssocData *methods, *typePtr2, *prevPtr, *ptr;
methods = Tcl_GetAssocData(interp, "smoothMethod", NULL);
/*
* Initialize if we were not previously initialized.
*/
if (methods == NULL) {
methods = InitSmoothMethods(interp);
}
/*
* If there's already a smooth method with the given name, remove it.
*/
for (typePtr2 = methods, prevPtr = NULL; typePtr2 != NULL;
prevPtr = typePtr2, typePtr2 = typePtr2->nextPtr) {
if (!strcmp(typePtr2->smooth.name, smooth->name)) {
if (prevPtr == NULL) {
methods = typePtr2->nextPtr;
} else {
prevPtr->nextPtr = typePtr2->nextPtr;
}
ckfree(typePtr2);
break;
}
}
ptr = ckalloc(sizeof(SmoothAssocData));
ptr->smooth.name = smooth->name;
ptr->smooth.coordProc = smooth->coordProc;
ptr->smooth.postscriptProc = smooth->postscriptProc;
ptr->nextPtr = methods;
Tcl_SetAssocData(interp, "smoothMethod", SmoothMethodCleanupProc, ptr);
}
/*
*----------------------------------------------------------------------
*
* SmoothMethodCleanupProc --
*
* This function is invoked whenever an interpreter is deleted to
* cleanup the smooth methods.
*
* Results:
* None.
*
* Side effects:
* Smooth methods are removed.
*
*----------------------------------------------------------------------
*/
static void
SmoothMethodCleanupProc(
ClientData clientData, /* Points to "smoothMethod" AssocData for the
* interpreter. */
Tcl_Interp *interp) /* Interpreter that is being deleted. */
{
SmoothAssocData *ptr, *methods = clientData;
while (methods != NULL) {
ptr = methods;
methods = methods->nextPtr;
ckfree(ptr);
}
}
/*
*--------------------------------------------------------------
*
* TkSmoothParseProc --
*
* This function is invoked during option processing to handle the
* "-smooth" option.
*
* Results:
* A standard Tcl return value.
*
* Side effects:
* The smooth option for a given item gets replaced by the value
* indicated in the value argument.
*
*--------------------------------------------------------------
*/
int
TkSmoothParseProc(
ClientData clientData, /* Ignored. */
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. */
{
register const Tk_SmoothMethod **smoothPtr =
(const Tk_SmoothMethod **) (widgRec + offset);
const Tk_SmoothMethod *smooth = NULL;
int b;
size_t length;
SmoothAssocData *methods;
if (value == NULL || *value == 0) {
*smoothPtr = NULL;
return TCL_OK;
}
length = strlen(value);
methods = Tcl_GetAssocData(interp, "smoothMethod", NULL);
/*
* Not initialized yet; fix that now.
*/
if (methods == NULL) {
methods = InitSmoothMethods(interp);
}
/*
* Backward compatibility hack.
*/
if (strncmp(value, "bezier", length) == 0) {
smooth = &tkBezierSmoothMethod;
}
/*
* Search the list of installed smooth methods.
*/
while (methods != NULL) {
if (strncmp(value, methods->smooth.name, length) == 0) {
if (smooth != NULL) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"ambiguous smooth method \"%s\"", value));
Tcl_SetErrorCode(interp, "TK", "LOOKUP", "SMOOTH", value,
NULL);
return TCL_ERROR;
}
smooth = &methods->smooth;
}
methods = methods->nextPtr;
}
if (smooth) {
*smoothPtr = smooth;
return TCL_OK;
}
/*
* Did not find it. Try parsing as a boolean instead.
*/
if (Tcl_GetBoolean(interp, (char *) value, &b) != TCL_OK) {
return TCL_ERROR;
}
*smoothPtr = b ? &tkBezierSmoothMethod : NULL;
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* TkSmoothPrintProc --
*
* This function is invoked by the Tk configuration code to produce a
* printable string for the "-smooth" configuration option.
*
* Results:
* The return value is a string describing the smooth option 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.
*
*--------------------------------------------------------------
*/
const char *
TkSmoothPrintProc(
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 const Tk_SmoothMethod *smoothPtr =
* (Tk_SmoothMethod **) (widgRec + offset);
return smoothPtr ? smoothPtr->name : "0";
}
/*
*--------------------------------------------------------------
*
* Tk_GetDash
*
* This function is used to parse a string, assuming it is dash
* information.
*
* Results:
* The return value is a standard Tcl result: TCL_OK means that the dash
* information was parsed ok, and TCL_ERROR means it couldn't be parsed.
*
* Side effects:
* Dash information in the dash structure is updated.
*
*--------------------------------------------------------------
*/
int
Tk_GetDash(
Tcl_Interp *interp, /* Used for error reporting. */
const char *value, /* Textual specification of dash list. */
Tk_Dash *dash) /* Pointer to record in which to store dash
* information. */
{
int argc, i;
const char **largv, **argv = NULL;
char *pt;
if ((value == NULL) || (*value == '\0')) {
dash->number = 0;
return TCL_OK;
}
/*
* switch is usually compiled more efficiently than a chain of conditions.
*/
switch (*value) {
case '.': case ',': case '-': case '_':
i = DashConvert(NULL, value, -1, 0.0);
if (i <= 0) {
goto badDashList;
}
i = strlen(value);
if (i > (int) sizeof(char *)) {
dash->pattern.pt = pt = ckalloc(strlen(value));
} else {
pt = dash->pattern.array;
}
memcpy(pt, value, (unsigned) i);
dash->number = -i;
return TCL_OK;
}
if (Tcl_SplitList(interp, (char *) value, &argc, &argv) != TCL_OK) {
Tcl_ResetResult(interp);
goto badDashList;
}
if ((unsigned) ABS(dash->number) > sizeof(char *)) {
ckfree(dash->pattern.pt);
}
if (argc > (int) sizeof(char *)) {
dash->pattern.pt = pt = ckalloc(argc);
} else {
pt = dash->pattern.array;
}
dash->number = argc;
largv = argv;
while (argc > 0) {
if (Tcl_GetInt(interp, *largv, &i) != TCL_OK || i < 1 || i>255) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"expected integer in the range 1..255 but got \"%s\"",
*largv));
Tcl_SetErrorCode(interp, "TK", "VALUE", "DASH", NULL);
goto syntaxError;
}
*pt++ = i;
argc--;
largv++;
}
if (argv != NULL) {
ckfree(argv);
}
return TCL_OK;
/*
* Something went wrong. Generate error message, clean up and return.
*/
badDashList:
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"bad dash list \"%s\": must be a list of integers or a format like \"-..\"",
value));
Tcl_SetErrorCode(interp, "TK", "VALUE", "DASH", NULL);
syntaxError:
if (argv != NULL) {
ckfree(argv);
}
if ((unsigned) ABS(dash->number) > sizeof(char *)) {
ckfree(dash->pattern.pt);
}
dash->number = 0;
return TCL_ERROR;
}
/*
*--------------------------------------------------------------
*
* Tk_CreateOutline
*
* This function initializes the Tk_Outline structure with default
* values.
*
* Results:
* None
*
* Side effects:
* None
*
*--------------------------------------------------------------
*/
void
Tk_CreateOutline(
Tk_Outline *outline) /* Outline structure to be filled in. */
{
outline->gc = NULL;
outline->width = 1.0;
outline->activeWidth = 0.0;
outline->disabledWidth = 0.0;
outline->offset = 0;
outline->dash.number = 0;
outline->activeDash.number = 0;
outline->disabledDash.number = 0;
outline->tsoffset.flags = 0;
outline->tsoffset.xoffset = 0;
outline->tsoffset.yoffset = 0;
outline->color = NULL;
outline->activeColor = NULL;
outline->disabledColor = NULL;
outline->stipple = None;
outline->activeStipple = None;
outline->disabledStipple = None;
}
/*
*--------------------------------------------------------------
*
* Tk_DeleteOutline
*
* This function frees all memory that might be allocated and referenced
* in the Tk_Outline structure.
*
* Results:
* None
*
* Side effects:
* None
*
*--------------------------------------------------------------
*/
void
Tk_DeleteOutline(
Display *display, /* Display containing window. */
Tk_Outline *outline)
{
if (outline->gc != NULL) {
Tk_FreeGC(display, outline->gc);
}
if ((unsigned) ABS(outline->dash.number) > sizeof(char *)) {
ckfree(outline->dash.pattern.pt);
}
if ((unsigned) ABS(outline->activeDash.number) > sizeof(char *)) {
ckfree(outline->activeDash.pattern.pt);
}
if ((unsigned) ABS(outline->disabledDash.number) > sizeof(char *)) {
ckfree(outline->disabledDash.pattern.pt);
}
if (outline->color != NULL) {
Tk_FreeColor(outline->color);
}
if (outline->activeColor != NULL) {
Tk_FreeColor(outline->activeColor);
}
if (outline->disabledColor != NULL) {
Tk_FreeColor(outline->disabledColor);
}
if (outline->stipple != None) {
Tk_FreeBitmap(display, outline->stipple);
}
if (outline->activeStipple != None) {
Tk_FreeBitmap(display, outline->activeStipple);
}
if (outline->disabledStipple != None) {
Tk_FreeBitmap(display, outline->disabledStipple);
}
}
/*
*--------------------------------------------------------------
*
* Tk_ConfigOutlineGC
*
* This function should be called in the canvas object during the
* configure command. The graphics context description in gcValues is
* updated according to the information in the dash structure, as far as
* possible.
*
* Results:
* The return-value is a mask, indicating which elements of gcValues have
* been updated. 0 means there is no outline.
*
* Side effects:
* GC information in gcValues is updated.
*
*--------------------------------------------------------------
*/
int
Tk_ConfigOutlineGC(
XGCValues *gcValues,
Tk_Canvas canvas,
Tk_Item *item,
Tk_Outline *outline)
{
int mask = 0;
double width;
Tk_Dash *dash;
XColor *color;
Pixmap stipple;
Tk_State state = item->state;
if (outline->width < 0.0) {
outline->width = 0.0;
}
if (outline->activeWidth < 0.0) {
outline->activeWidth = 0.0;
}
if (outline->disabledWidth < 0) {
outline->disabledWidth = 0.0;
}
if (state==TK_STATE_HIDDEN) {
return 0;
}
width = outline->width;
if (width < 1.0) {
width = 1.0;
}
dash = &(outline->dash);
color = outline->color;
stipple = outline->stipple;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
if (Canvas(canvas)->currentItemPtr == item) {
if (outline->activeWidth>width) {
width = outline->activeWidth;
}
if (outline->activeDash.number != 0) {
dash = &(outline->activeDash);
}
if (outline->activeColor!=NULL) {
color = outline->activeColor;
}
if (outline->activeStipple!=None) {
stipple = outline->activeStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (outline->disabledWidth>0) {
width = outline->disabledWidth;
}
if (outline->disabledDash.number != 0) {
dash = &(outline->disabledDash);
}
if (outline->disabledColor!=NULL) {
color = outline->disabledColor;
}
if (outline->disabledStipple!=None) {
stipple = outline->disabledStipple;
}
}
if (color==NULL) {
return 0;
}
gcValues->line_width = (int) (width + 0.5);
if (color != NULL) {
gcValues->foreground = color->pixel;
mask = GCForeground|GCLineWidth;
if (stipple != None) {
gcValues->stipple = stipple;
gcValues->fill_style = FillStippled;
mask |= GCStipple|GCFillStyle;
}
}
if (mask && (dash->number != 0)) {
gcValues->line_style = LineOnOffDash;
gcValues->dash_offset = outline->offset;
if ((unsigned int)ABS(dash->number) > sizeof(char *)) {
gcValues->dashes = dash->pattern.pt[0];
} else if (dash->number != 0) {
gcValues->dashes = dash->pattern.array[0];
} else {
gcValues->dashes = (char) (4 * width + 0.5);
}
mask |= GCLineStyle|GCDashList|GCDashOffset;
}
return mask;
}
/*
*--------------------------------------------------------------
*
* Tk_ChangeOutlineGC
*
* Updates the GC to represent the full information of the dash
* structure. Partly this is already done in Tk_ConfigOutlineGC(). This
* function should be called just before drawing the dashed item.
*
* Results:
* 1 if there is a stipple pattern, and 0 otherwise.
*
* Side effects:
* GC is updated.
*
*--------------------------------------------------------------
*/
int
Tk_ChangeOutlineGC(
Tk_Canvas canvas,
Tk_Item *item,
Tk_Outline *outline)
{
const char *p;
double width;
Tk_Dash *dash;
XColor *color;
Pixmap stipple;
Tk_State state = item->state;
width = outline->width;
if (width < 1.0) {
width = 1.0;
}
dash = &(outline->dash);
color = outline->color;
stipple = outline->stipple;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
if (Canvas(canvas)->currentItemPtr == item) {
if (outline->activeWidth > width) {
width = outline->activeWidth;
}
if (outline->activeDash.number != 0) {
dash = &(outline->activeDash);
}
if (outline->activeColor != NULL) {
color = outline->activeColor;
}
if (outline->activeStipple != None) {
stipple = outline->activeStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (outline->disabledWidth > width) {
width = outline->disabledWidth;
}
if (outline->disabledDash.number != 0) {
dash = &(outline->disabledDash);
}
if (outline->disabledColor != NULL) {
color = outline->disabledColor;
}
if (outline->disabledStipple != None) {
stipple = outline->disabledStipple;
}
}
if (color==NULL) {
return 0;
}
if ((dash->number<-1) ||
((dash->number == -1) && (dash->pattern.array[0] != ','))) {
char *q;
int i = -dash->number;
p = (i > (int)sizeof(char *)) ? dash->pattern.pt : dash->pattern.array;
q = ckalloc(2 * i);
i = DashConvert(q, p, i, width);
XSetDashes(Canvas(canvas)->display, outline->gc, outline->offset, q,i);
ckfree(q);
} else if (dash->number>2 || (dash->number==2 &&
(dash->pattern.array[0]!=dash->pattern.array[1]))) {
p = (dash->number > (int) sizeof(char *))
? dash->pattern.pt : dash->pattern.array;
XSetDashes(Canvas(canvas)->display, outline->gc, outline->offset, p,
dash->number);
}
if (stipple!=None) {
int w = 0; int h = 0;
Tk_TSOffset *tsoffset = &outline->tsoffset;
int flags = tsoffset->flags;
if (!(flags & TK_OFFSET_INDEX) &&
(flags & (TK_OFFSET_CENTER|TK_OFFSET_MIDDLE))) {
Tk_SizeOfBitmap(Canvas(canvas)->display, stipple, &w, &h);
if (flags & TK_OFFSET_CENTER) {
w /= 2;
} else {
w = 0;
}
if (flags & TK_OFFSET_MIDDLE) {
h /= 2;
} else {
h = 0;
}
}
tsoffset->xoffset -= w;
tsoffset->yoffset -= h;
Tk_CanvasSetOffset(canvas, outline->gc, tsoffset);
tsoffset->xoffset += w;
tsoffset->yoffset += h;
return 1;
}
return 0;
}
/*
*--------------------------------------------------------------
*
* Tk_ResetOutlineGC
*
* Restores the GC to the situation before Tk_ChangeOutlineGC() was
* called. This function should be called just after the dashed item is
* drawn, because the GC is supposed to be read-only.
*
* Results:
* 1 if there is a stipple pattern, and 0 otherwise.
*
* Side effects:
* GC is updated.
*
*--------------------------------------------------------------
*/
int
Tk_ResetOutlineGC(
Tk_Canvas canvas,
Tk_Item *item,
Tk_Outline *outline)
{
char dashList;
double width;
Tk_Dash *dash;
XColor *color;
Pixmap stipple;
Tk_State state = item->state;
width = outline->width;
if (width < 1.0) {
width = 1.0;
}
dash = &(outline->dash);
color = outline->color;
stipple = outline->stipple;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
if (Canvas(canvas)->currentItemPtr == item) {
if (outline->activeWidth>width) {
width = outline->activeWidth;
}
if (outline->activeDash.number != 0) {
dash = &(outline->activeDash);
}
if (outline->activeColor!=NULL) {
color = outline->activeColor;
}
if (outline->activeStipple!=None) {
stipple = outline->activeStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (outline->disabledWidth>width) {
width = outline->disabledWidth;
}
if (outline->disabledDash.number != 0) {
dash = &(outline->disabledDash);
}
if (outline->disabledColor!=NULL) {
color = outline->disabledColor;
}
if (outline->disabledStipple!=None) {
stipple = outline->disabledStipple;
}
}
if (color==NULL) {
return 0;
}
if ((dash->number > 2) || (dash->number < -1) || (dash->number==2 &&
(dash->pattern.array[0] != dash->pattern.array[1])) ||
((dash->number == -1) && (dash->pattern.array[0] != ','))) {
if ((unsigned int)ABS(dash->number) > sizeof(char *)) {
dashList = dash->pattern.pt[0];
} else if (dash->number != 0) {
dashList = dash->pattern.array[0];
} else {
dashList = (char) (4 * width + 0.5);
}
XSetDashes(Canvas(canvas)->display, outline->gc, outline->offset,
&dashList , 1);
}
if (stipple != None) {
XSetTSOrigin(Canvas(canvas)->display, outline->gc, 0, 0);
return 1;
}
return 0;
}
/*
*--------------------------------------------------------------
*
* Tk_CanvasPsOutline
*
* Creates the postscript command for the correct Outline-information
* (width, dash, color and stipple).
*
* Results:
* TCL_OK if succeeded, otherwise TCL_ERROR.
*
* Side effects:
* canvas->interp->result contains the postscript string, or an error
* message if the result was TCL_ERROR.
*
*--------------------------------------------------------------
*/
int
Tk_CanvasPsOutline(
Tk_Canvas canvas,
Tk_Item *item,
Tk_Outline *outline)
{
char pattern[11];
int i;
char *ptr, *lptr = pattern;
Tcl_Interp *interp = Canvas(canvas)->interp;
double width = outline->width;
Tk_Dash *dash = &outline->dash;
XColor *color = outline->color;
Pixmap stipple = outline->stipple;
Tk_State state = item->state;
Tcl_Obj *psObj = GetPostscriptBuffer(interp);
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
if (Canvas(canvas)->currentItemPtr == item) {
if (outline->activeWidth > width) {
width = outline->activeWidth;
}
if (outline->activeDash.number > 0) {
dash = &outline->activeDash;
}
if (outline->activeColor != NULL) {
color = outline->activeColor;
}
if (outline->activeStipple != None) {
stipple = outline->activeStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (outline->disabledWidth > 0) {
width = outline->disabledWidth;
}
if (outline->disabledDash.number > 0) {
dash = &outline->disabledDash;
}
if (outline->disabledColor != NULL) {
color = outline->disabledColor;
}
if (outline->disabledStipple != None) {
stipple = outline->disabledStipple;
}
}
Tcl_AppendPrintfToObj(psObj, "%.15g setlinewidth\n", width);
ptr = ((unsigned) ABS(dash->number) > sizeof(char *)) ?
dash->pattern.pt : dash->pattern.array;
Tcl_AppendToObj(psObj, "[", -1);
if (dash->number > 0) {
Tcl_Obj *converted;
char *p = ptr;
converted = Tcl_ObjPrintf("%d", *p++ & 0xff);
for (i = dash->number-1 ; i>0 ; i--) {
Tcl_AppendPrintfToObj(converted, " %d", *p++ & 0xff);
}
Tcl_AppendObjToObj(psObj, converted);
if (dash->number & 1) {
Tcl_AppendToObj(psObj, " ", -1);
Tcl_AppendObjToObj(psObj, converted);
}
Tcl_DecrRefCount(converted);
Tcl_AppendPrintfToObj(psObj, "] %d setdash\n", outline->offset);
} else if (dash->number < 0) {
if (dash->number < -5) {
lptr = ckalloc(1 - 2*dash->number);
}
i = DashConvert(lptr, ptr, -dash->number, width);
if (i > 0) {
char *p = lptr;
Tcl_AppendPrintfToObj(psObj, "%d", *p++ & 0xff);
for (; --i>0 ;) {
Tcl_AppendPrintfToObj(psObj, " %d", *p++ & 0xff);
}
Tcl_AppendPrintfToObj(psObj, "] %d setdash\n", outline->offset);
} else {
Tcl_AppendToObj(psObj, "] 0 setdash\n", -1);
}
if (lptr != pattern) {
ckfree(lptr);
}
} else {
Tcl_AppendToObj(psObj, "] 0 setdash\n", -1);
}
if (Tk_CanvasPsColor(interp, canvas, color) != TCL_OK) {
return TCL_ERROR;
}
/*
* Note that psObj might hold an invalid reference now.
*/
if (stipple != None) {
Tcl_AppendToObj(GetPostscriptBuffer(interp), "StrokeClip ", -1);
if (Tk_CanvasPsStipple(interp, canvas, stipple) != TCL_OK) {
return TCL_ERROR;
}
} else {
Tcl_AppendToObj(GetPostscriptBuffer(interp), "stroke\n", -1);
}
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* DashConvert
*
* Converts a character-like dash-list (e.g. "-..") into an X11-style. l
* must point to a string that holds room to at least 2*n characters. If
* l == NULL, this function can be used for syntax checking only.
*
* Results:
* The length of the resulting X11 compatible dash-list. -1 if failed.
*
* Side effects:
* None
*
*--------------------------------------------------------------
*/
static int
DashConvert(
char *l, /* Must be at least 2*n chars long, or NULL to
* indicate "just check syntax". */
const char *p, /* String to parse. */
int n, /* Length of string to parse, or -1 to
* indicate that strlen() should be used. */
double width) /* Width of line. */
{
int result = 0;
int size, intWidth;
if (n < 0) {
n = strlen(p);
}
intWidth = (int) (width + 0.5);
if (intWidth < 1) {
intWidth = 1;
}
while (n-- && *p) {
switch (*p++) {
case ' ':
if (result) {
if (l) {
l[-1] += intWidth + 1;
}
continue;
}
return 0;
case '_':
size = 8;
break;
case '-':
size = 6;
break;
case ',':
size = 4;
break;
case '.':
size = 2;
break;
default:
return -1;
}
if (l) {
*l++ = size * intWidth;
*l++ = 4 * intWidth;
}
result += 2;
}
return result;
}
/*
*----------------------------------------------------------------------
*
* TranslateAndAppendCoords --
*
* This is a helper routine for TkCanvTranslatePath() below.
*
* Given an (x,y) coordinate pair within a canvas, this function computes
* the corresponding coordinates at which the point should be drawn in
* the drawable used for display. Those coordinates are then written into
* outArr[numOut*2] and outArr[numOut*2+1].
*
* Results:
* There is no return value.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static void
TranslateAndAppendCoords(
TkCanvas *canvPtr, /* The canvas. */
double x, /* Coordinates in canvas space. */
double y,
XPoint *outArr, /* Write results into this array */
int numOut) /* Num of prior entries in outArr[] */
{
double tmp;
tmp = x - canvPtr->drawableXOrigin;
if (tmp > 0) {
tmp += 0.5;
} else {
tmp -= 0.5;
}
outArr[numOut].x = (short) tmp;
tmp = y - canvPtr->drawableYOrigin;
if (tmp > 0) {
tmp += 0.5;
} else {
tmp -= 0.5;
}
outArr[numOut].y = (short) tmp;
}
/*
*--------------------------------------------------------------
*
* TkCanvTranslatePath
*
* Translate a line or polygon path so that all vertices are within a
* rectangle that is 1000 pixels larger than the total size of the canvas
* window. This will prevent pixel coordinates from overflowing the
* 16-bit integer size limitation imposed by most windowing systems.
*
* coordPtr must point to an array of doubles, two doubles per vertex.
* There are a total of numVertex vertices, or 2*numVertex entries in
* coordPtr. The result vertices written into outArr have their
* coordinate origin shifted to canvPtr->drawableXOrigin by
* canvPtr->drawableYOrigin. There might be as many as 3 times more
* output vertices than there are input vertices. The calling function
* should allocate space accordingly.
*
* This routine limits the width and height of a canvas window to 31767
* pixels. At the highest resolution display devices available today (210
* ppi in Jan 2003) that's a window that is over 13 feet wide and tall.
* Should be enough for the near future.
*
* Results:
* Clipped and translated path vertices are written into outArr[]. There
* might be as many as twice the vertices in outArr[] as there are in
* coordPtr[]. The return value is the number of vertices actually
* written into outArr[].
*
* Side effects:
* None
*
*--------------------------------------------------------------
*/
int
TkCanvTranslatePath(
TkCanvas *canvPtr, /* The canvas */
int numVertex, /* Number of vertices specified by
* coordArr[] */
double *coordArr, /* X and Y coordinates for each vertex */
int closedPath, /* True if this is a closed polygon */
XPoint *outArr) /* Write results here, if not NULL */
{
int numOutput = 0; /* Number of output coordinates */
double lft, rgh; /* Left and right sides of the bounding box */
double top, btm; /* Top and bottom sizes of the bounding box */
double *tempArr; /* Temporary storage used by the clipper */
double *a, *b, *t; /* Pointers to parts of the temporary
* storage */
int i, j; /* Loop counters */
double limit[4]; /* Boundries at which clipping occurs */
double staticSpace[480]; /* Temp space from the stack */
/*
* Constrain all vertices of the path to be within a box that is no larger
* than 32000 pixels wide or height. The top-left corner of this clipping
* box is 1000 pixels above and to the left of the top left corner of the
* window on which the canvas is displayed.
*
* This means that a canvas will not display properly on a canvas window
* that is larger than 31000 pixels wide or high. That is not a problem
* today, but might someday become a factor for ultra-high resolutions
* displays.
*
* The X11 protocol allows us (in theory) to expand the size of the
* clipping box to 32767 pixels. But we have found experimentally that
* XFree86 sometimes fails to draw lines correctly if they are longer than
* about 32500 pixels. So we have left a little margin in the size to mask
* that bug.
*/
lft = canvPtr->xOrigin - 1000.0;
top = canvPtr->yOrigin - 1000.0;
rgh = lft + 32000.0;
btm = top + 32000.0;
/*
* Try the common case first - no clipping. Loop over the input
* coordinates and translate them into appropriate output coordinates.
* But if a vertex outside of the bounding box is seen, break out of the
* loop.
*
* Most of the time, no clipping is needed, so this one loop is sufficient
* to do the translation.
*/
for (i=0; i<numVertex; i++){
double x, y;
x = coordArr[i*2];
y = coordArr[i*2 + 1];
if (x<lft || x>rgh || y<top || y>btm) {
break;
}
TranslateAndAppendCoords(canvPtr, x, y, outArr, numOutput++);
}
if (i == numVertex){
assert(numOutput == numVertex);
return numOutput;
}
/*
* If we reach this point, it means that some clipping is required. Begin
* by allocating some working storage - at least 6 times as much space as
* coordArr[] requires. Divide this space into two separate arrays a[] and
* b[]. Initialize a[] to be equal to coordArr[].
*/
if (numVertex*12 <= (int) (sizeof(staticSpace) / sizeof(double))) {
tempArr = staticSpace;
} else {
tempArr = ckalloc(numVertex * 12 * sizeof(double));
}
for (i=0; i<numVertex*2; i++){
tempArr[i] = coordArr[i];
}
a = tempArr;
b = &tempArr[numVertex*6];
/*
* We will make four passes through the input data. On each pass, we copy
* the contents of a[] over into b[]. As we copy, we clip any line
* segments that extend to the right past xClip then we rotate the
* coordinate system 90 degrees clockwise. After each pass is complete, we
* interchange a[] and b[] in preparation for the next pass.
*
* Each pass clips line segments that extend beyond a single side of the
* bounding box, and four passes rotate the coordinate system back to its
* original value. I'm not an expert on graphics algorithms, but I think
* this is called Cohen-Sutherland polygon clipping.
*
* The limit[] array contains the xClip value used for each of the four
* passes.
*/
limit[0] = rgh;
limit[1] = -top;
limit[2] = -lft;
limit[3] = btm;
/*
* This is the loop that makes the four passes through the data.
*/
for (j=0; j<4; j++) {
double xClip = limit[j];
int inside = a[0] < xClip;
double priorY = a[1];
numOutput = 0;
/*
* Clip everything to the right of xClip. Store the results in b[]
* rotated by 90 degrees clockwise.
*/
for (i=0; i<numVertex; i++) {
double x = a[i*2];
double y = a[i*2 + 1];
if (x >= xClip) {
/*
* The current vertex is to the right of xClip.
*/
if (inside) {
/*
* If the current vertex is to the right of xClip but the
* previous vertex was left of xClip, then draw a line
* segment from the previous vertex to until it intersects
* the vertical at xClip.
*/
double x0, y0, yN;
assert(i > 0);
x0 = a[i*2 - 2];
y0 = a[i*2 - 1];
yN = y0 + (y - y0)*(xClip-x0)/(x-x0);
b[numOutput*2] = -yN;
b[numOutput*2 + 1] = xClip;
numOutput++;
assert(numOutput <= numVertex*3);
priorY = yN;
inside = 0;
} else if (i == 0) {
/*
* If the first vertex is to the right of xClip, add a
* vertex that is the projection of the first vertex onto
* the vertical xClip line.
*/
b[0] = -y;
b[1] = xClip;
numOutput = 1;
priorY = y;
}
} else {
/*
* The current vertex is to the left of xClip
*/
if (!inside) {
/*
* If the current vertex is on the left of xClip and one
* or more prior vertices where to the right, then we have
* to draw a line segment along xClip that extends from
* the spot where we first crossed from left to right to
* the spot where we cross back from right to left.
*/
double x0, y0, yN;
assert(i > 0);
x0 = a[i*2 - 2];
y0 = a[i*2 - 1];
yN = y0 + (y - y0)*(xClip-x0)/(x-x0);
if (yN != priorY) {
b[numOutput*2] = -yN;
b[numOutput*2 + 1] = xClip;
numOutput++;
assert(numOutput <= numVertex*3);
}
inside = 1;
}
b[numOutput*2] = -y;
b[numOutput*2 + 1] = x;
numOutput++;
assert(numOutput <= numVertex*3);
}
}
/*
* Interchange a[] and b[] in preparation for the next pass.
*/
t = a;
a = b;
b = t;
numVertex = numOutput;
}
/*
* All clipping is now finished. Convert the coordinates from doubles into
* XPoints and translate the origin for the drawable.
*/
for (i=0; i<numVertex; i++) {
TranslateAndAppendCoords(canvPtr, a[i*2], a[i*2+1], outArr, i);
}
if (tempArr != staticSpace) {
ckfree(tempArr);
}
return numOutput;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/