/*
* tkRectOval.c --
*
* This file implements rectangle and oval items for canvas widgets.
*
* Copyright (c) 1991-1994 The Regents of the University of California.
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tkInt.h"
#include "tkCanvas.h"
#include "default.h"
/*
* The structure below defines the record for each rectangle/oval item.
*/
typedef struct RectOvalItem {
Tk_Item header; /* Generic stuff that's the same for all
* types. MUST BE FIRST IN STRUCTURE. */
Tk_Outline outline; /* Outline structure */
double bbox[4]; /* Coordinates of bounding box for rectangle
* or oval (x1, y1, x2, y2). Item includes x1
* and x2 but not y1 and y2. */
Tk_TSOffset tsoffset;
XColor *fillColor; /* Color for filling rectangle/oval. */
XColor *activeFillColor; /* Color for filling rectangle/oval if state
* is active. */
XColor *disabledFillColor; /* Color for filling rectangle/oval if state
* is disabled. */
Pixmap fillStipple; /* Stipple bitmap for filling item. */
Pixmap activeFillStipple; /* Stipple bitmap for filling item if state is
* active. */
Pixmap disabledFillStipple; /* Stipple bitmap for filling item if state is
* disabled. */
GC fillGC; /* Graphics context for filling item. */
} RectOvalItem;
/*
* Information used for parsing configuration specs:
*/
static const Tk_CustomOption stateOption = {
TkStateParseProc, TkStatePrintProc, INT2PTR(2)
};
static const Tk_CustomOption tagsOption = {
Tk_CanvasTagsParseProc, Tk_CanvasTagsPrintProc, NULL
};
static const Tk_CustomOption dashOption = {
TkCanvasDashParseProc, TkCanvasDashPrintProc, NULL
};
static const Tk_CustomOption offsetOption = {
TkOffsetParseProc, TkOffsetPrintProc, INT2PTR(TK_OFFSET_RELATIVE)
};
static const Tk_CustomOption pixelOption = {
TkPixelParseProc, TkPixelPrintProc, NULL
};
static const Tk_ConfigSpec configSpecs[] = {
{TK_CONFIG_CUSTOM, "-activedash", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, outline.activeDash),
TK_CONFIG_NULL_OK, &dashOption},
{TK_CONFIG_COLOR, "-activefill", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, activeFillColor), TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_COLOR, "-activeoutline", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, outline.activeColor), TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_BITMAP, "-activeoutlinestipple", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, outline.activeStipple),
TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_BITMAP, "-activestipple", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, activeFillStipple), TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_CUSTOM, "-activewidth", NULL, NULL,
"0.0", Tk_Offset(RectOvalItem, outline.activeWidth),
TK_CONFIG_DONT_SET_DEFAULT, &pixelOption},
{TK_CONFIG_CUSTOM, "-dash", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, outline.dash),
TK_CONFIG_NULL_OK, &dashOption},
{TK_CONFIG_PIXELS, "-dashoffset", NULL, NULL,
"0", Tk_Offset(RectOvalItem, outline.offset),
TK_CONFIG_DONT_SET_DEFAULT, NULL},
{TK_CONFIG_CUSTOM, "-disableddash", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, outline.disabledDash),
TK_CONFIG_NULL_OK, &dashOption},
{TK_CONFIG_COLOR, "-disabledfill", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, disabledFillColor), TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_COLOR, "-disabledoutline", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, outline.disabledColor),
TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_BITMAP, "-disabledoutlinestipple", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, outline.disabledStipple),
TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_BITMAP, "-disabledstipple", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, disabledFillStipple), TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_PIXELS, "-disabledwidth", NULL, NULL,
"0.0", Tk_Offset(RectOvalItem, outline.disabledWidth),
TK_CONFIG_DONT_SET_DEFAULT, &pixelOption},
{TK_CONFIG_COLOR, "-fill", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, fillColor), TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_CUSTOM, "-offset", NULL, NULL,
"0,0", Tk_Offset(RectOvalItem, tsoffset),
TK_CONFIG_DONT_SET_DEFAULT, &offsetOption},
{TK_CONFIG_COLOR, "-outline", NULL, NULL,
DEF_CANVITEM_OUTLINE, Tk_Offset(RectOvalItem, outline.color), TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_CUSTOM, "-outlineoffset", NULL, NULL,
"0,0", Tk_Offset(RectOvalItem, outline.tsoffset),
TK_CONFIG_DONT_SET_DEFAULT, &offsetOption},
{TK_CONFIG_BITMAP, "-outlinestipple", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, outline.stipple), TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_CUSTOM, "-state", NULL, NULL,
NULL, Tk_Offset(Tk_Item, state),TK_CONFIG_NULL_OK, &stateOption},
{TK_CONFIG_BITMAP, "-stipple", NULL, NULL,
NULL, Tk_Offset(RectOvalItem, fillStipple),TK_CONFIG_NULL_OK, NULL},
{TK_CONFIG_CUSTOM, "-tags", NULL, NULL,
NULL, 0, TK_CONFIG_NULL_OK, &tagsOption},
{TK_CONFIG_CUSTOM, "-width", NULL, NULL,
"1.0", Tk_Offset(RectOvalItem, outline.width),
TK_CONFIG_DONT_SET_DEFAULT, &pixelOption},
{TK_CONFIG_END, NULL, NULL, NULL, NULL, 0, 0, NULL}
};
/*
* Prototypes for functions defined in this file:
*/
static void ComputeRectOvalBbox(Tk_Canvas canvas,
RectOvalItem *rectOvalPtr);
static int ConfigureRectOval(Tcl_Interp *interp, Tk_Canvas canvas,
Tk_Item *itemPtr, int objc, Tcl_Obj *const objv[],
int flags);
static int CreateRectOval(Tcl_Interp *interp, Tk_Canvas canvas,
Tk_Item *itemPtr, int objc, Tcl_Obj *const objv[]);
static void DeleteRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
Display *display);
static void DisplayRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
Display *display, Drawable dst, int x, int y,
int width, int height);
static int OvalToArea(Tk_Canvas canvas, Tk_Item *itemPtr,
double *areaPtr);
static double OvalToPoint(Tk_Canvas canvas, Tk_Item *itemPtr,
double *pointPtr);
static int RectOvalCoords(Tcl_Interp *interp, Tk_Canvas canvas,
Tk_Item *itemPtr, int objc, Tcl_Obj *const objv[]);
static int RectOvalToPostscript(Tcl_Interp *interp,
Tk_Canvas canvas, Tk_Item *itemPtr, int prepass);
static int RectToArea(Tk_Canvas canvas, Tk_Item *itemPtr,
double *areaPtr);
static double RectToPoint(Tk_Canvas canvas, Tk_Item *itemPtr,
double *pointPtr);
static void ScaleRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
double originX, double originY,
double scaleX, double scaleY);
static void TranslateRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
double deltaX, double deltaY);
/*
* The structures below defines the rectangle and oval item types by means of
* functions that can be invoked by generic item code.
*/
Tk_ItemType tkRectangleType = {
"rectangle", /* name */
sizeof(RectOvalItem), /* itemSize */
CreateRectOval, /* createProc */
configSpecs, /* configSpecs */
ConfigureRectOval, /* configureProc */
RectOvalCoords, /* coordProc */
DeleteRectOval, /* deleteProc */
DisplayRectOval, /* displayProc */
TK_CONFIG_OBJS, /* flags */
RectToPoint, /* pointProc */
RectToArea, /* areaProc */
RectOvalToPostscript, /* postscriptProc */
ScaleRectOval, /* scaleProc */
TranslateRectOval, /* translateProc */
NULL, /* indexProc */
NULL, /* icursorProc */
NULL, /* selectionProc */
NULL, /* insertProc */
NULL, /* dTextProc */
NULL, /* nextPtr */
NULL, 0, NULL, NULL
};
Tk_ItemType tkOvalType = {
"oval", /* name */
sizeof(RectOvalItem), /* itemSize */
CreateRectOval, /* createProc */
configSpecs, /* configSpecs */
ConfigureRectOval, /* configureProc */
RectOvalCoords, /* coordProc */
DeleteRectOval, /* deleteProc */
DisplayRectOval, /* displayProc */
TK_CONFIG_OBJS, /* flags */
OvalToPoint, /* pointProc */
OvalToArea, /* areaProc */
RectOvalToPostscript, /* postscriptProc */
ScaleRectOval, /* scaleProc */
TranslateRectOval, /* translateProc */
NULL, /* indexProc */
NULL, /* cursorProc */
NULL, /* selectionProc */
NULL, /* insertProc */
NULL, /* dTextProc */
NULL, /* nextPtr */
NULL, 0, NULL, NULL
};
/*
*--------------------------------------------------------------
*
* CreateRectOval --
*
* This function is invoked to create a new rectangle or oval item in a
* canvas.
*
* Results:
* A standard Tcl return value. If an error occurred in creating the
* item, then an error message is left in the interp's result; in this
* case itemPtr is left uninitialized, so it can be safely freed by the
* caller.
*
* Side effects:
* A new rectangle or oval item is created.
*
*--------------------------------------------------------------
*/
static int
CreateRectOval(
Tcl_Interp *interp, /* For error reporting. */
Tk_Canvas canvas, /* Canvas to hold new item. */
Tk_Item *itemPtr, /* Record to hold new item; header has been
* initialized by caller. */
int objc, /* Number of arguments in objv. */
Tcl_Obj *const objv[]) /* Arguments describing rectangle. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
int i;
if (objc == 0) {
Tcl_Panic("canvas did not pass any coords");
}
/*
* Carry out initialization that is needed in order to clean up after
* errors during the the remainder of this function.
*/
Tk_CreateOutline(&(rectOvalPtr->outline));
rectOvalPtr->tsoffset.flags = 0;
rectOvalPtr->tsoffset.xoffset = 0;
rectOvalPtr->tsoffset.yoffset = 0;
rectOvalPtr->fillColor = NULL;
rectOvalPtr->activeFillColor = NULL;
rectOvalPtr->disabledFillColor = NULL;
rectOvalPtr->fillStipple = None;
rectOvalPtr->activeFillStipple = None;
rectOvalPtr->disabledFillStipple = None;
rectOvalPtr->fillGC = NULL;
/*
* Process the arguments to fill in the item record.
*/
for (i = 1; i < objc; i++) {
const char *arg = Tcl_GetString(objv[i]);
if ((arg[0] == '-') && (arg[1] >= 'a') && (arg[1] <= 'z')) {
break;
}
}
if ((RectOvalCoords(interp, canvas, itemPtr, i, objv) != TCL_OK)) {
goto error;
}
if (ConfigureRectOval(interp, canvas, itemPtr, objc-i, objv+i, 0)
== TCL_OK) {
return TCL_OK;
}
error:
DeleteRectOval(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas)));
return TCL_ERROR;
}
/*
*--------------------------------------------------------------
*
* RectOvalCoords --
*
* This function is invoked to process the "coords" widget command on
* rectangles and ovals. See the user documentation for details on what
* it does.
*
* Results:
* Returns TCL_OK or TCL_ERROR, and sets the interp's result.
*
* Side effects:
* The coordinates for the given item may be changed.
*
*--------------------------------------------------------------
*/
static int
RectOvalCoords(
Tcl_Interp *interp, /* Used for error reporting. */
Tk_Canvas canvas, /* Canvas containing item. */
Tk_Item *itemPtr, /* Item whose coordinates are to be read or
* modified. */
int objc, /* Number of coordinates supplied in objv. */
Tcl_Obj *const objv[]) /* Array of coordinates: x1,y1,x2,y2,... */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
/*
* If no coordinates, return the current coordinates (i.e. bounding box).
*/
if (objc == 0) {
Tcl_Obj *bbox[4];
bbox[0] = Tcl_NewDoubleObj(rectOvalPtr->bbox[0]);
bbox[1] = Tcl_NewDoubleObj(rectOvalPtr->bbox[1]);
bbox[2] = Tcl_NewDoubleObj(rectOvalPtr->bbox[2]);
bbox[3] = Tcl_NewDoubleObj(rectOvalPtr->bbox[3]);
Tcl_SetObjResult(interp, Tcl_NewListObj(4, bbox));
return TCL_OK;
}
/*
* If one "coordinate", treat as list of coordinates.
*/
if (objc == 1) {
if (Tcl_ListObjGetElements(interp, objv[0], &objc,
(Tcl_Obj ***) &objv) != TCL_OK) {
return TCL_ERROR;
}
}
/*
* Better have four coordinates now. Spit out an error message otherwise.
*/
if (objc != 4) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"wrong # coordinates: expected 0 or 4, got %d", objc));
Tcl_SetErrorCode(interp, "TK", "CANVAS", "COORDS",
(rectOvalPtr->header.typePtr == &tkRectangleType
? "RECTANGLE" : "OVAL"), NULL);
return TCL_ERROR;
}
/*
* Parse the coordinates and update our bounding box.
*/
if ((Tk_CanvasGetCoordFromObj(interp, canvas, objv[0],
&rectOvalPtr->bbox[0]) != TCL_OK)
|| (Tk_CanvasGetCoordFromObj(interp, canvas, objv[1],
&rectOvalPtr->bbox[1]) != TCL_OK)
|| (Tk_CanvasGetCoordFromObj(interp, canvas, objv[2],
&rectOvalPtr->bbox[2]) != TCL_OK)
|| (Tk_CanvasGetCoordFromObj(interp, canvas, objv[3],
&rectOvalPtr->bbox[3]) != TCL_OK)) {
return TCL_ERROR;
}
ComputeRectOvalBbox(canvas, rectOvalPtr);
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* ConfigureRectOval --
*
* This function is invoked to configure various aspects of a rectangle
* or oval item, such as its border and background colors.
*
* Results:
* A standard Tcl result code. If an error occurs, then an error message
* is left in the interp's result.
*
* Side effects:
* Configuration information, such as colors and stipple patterns, may be
* set for itemPtr.
*
*--------------------------------------------------------------
*/
static int
ConfigureRectOval(
Tcl_Interp *interp, /* Used for error reporting. */
Tk_Canvas canvas, /* Canvas containing itemPtr. */
Tk_Item *itemPtr, /* Rectangle item to reconfigure. */
int objc, /* Number of elements in objv. */
Tcl_Obj *const objv[], /* Arguments describing things to configure. */
int flags) /* Flags to pass to Tk_ConfigureWidget. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
XGCValues gcValues;
GC newGC;
unsigned long mask;
Tk_Window tkwin;
Tk_TSOffset *tsoffset;
XColor *color;
Pixmap stipple;
Tk_State state;
tkwin = Tk_CanvasTkwin(canvas);
if (TCL_OK != Tk_ConfigureWidget(interp, tkwin, configSpecs, objc,
(const char **)objv, (char *) rectOvalPtr, flags|TK_CONFIG_OBJS)) {
return TCL_ERROR;
}
state = itemPtr->state;
/*
* A few of the options require additional processing, such as graphics
* contexts.
*/
if (rectOvalPtr->outline.activeWidth > rectOvalPtr->outline.width ||
rectOvalPtr->outline.activeDash.number != 0 ||
rectOvalPtr->outline.activeColor != NULL ||
rectOvalPtr->outline.activeStipple != None ||
rectOvalPtr->activeFillColor != NULL ||
rectOvalPtr->activeFillStipple != None) {
itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT;
} else {
itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT;
}
tsoffset = &rectOvalPtr->outline.tsoffset;
flags = tsoffset->flags;
if (flags & TK_OFFSET_LEFT) {
tsoffset->xoffset = (int) (rectOvalPtr->bbox[0] + 0.5);
} else if (flags & TK_OFFSET_CENTER) {
tsoffset->xoffset = (int)
((rectOvalPtr->bbox[0]+rectOvalPtr->bbox[2]+1)/2);
} else if (flags & TK_OFFSET_RIGHT) {
tsoffset->xoffset = (int) (rectOvalPtr->bbox[2] + 0.5);
}
if (flags & TK_OFFSET_TOP) {
tsoffset->yoffset = (int) (rectOvalPtr->bbox[1] + 0.5);
} else if (flags & TK_OFFSET_MIDDLE) {
tsoffset->yoffset = (int)
((rectOvalPtr->bbox[1]+rectOvalPtr->bbox[3]+1)/2);
} else if (flags & TK_OFFSET_BOTTOM) {
tsoffset->yoffset = (int) (rectOvalPtr->bbox[2] + 0.5);
}
/*
* Configure the outline graphics context. If mask is non-zero, the gc has
* changed and must be reallocated, provided that the new settings specify
* a valid outline (non-zero width and non-NULL color)
*/
mask = Tk_ConfigOutlineGC(&gcValues, canvas, itemPtr,
&(rectOvalPtr->outline));
if (mask && \
rectOvalPtr->outline.width != 0 && \
rectOvalPtr->outline.color != NULL) {
gcValues.cap_style = CapProjecting;
mask |= GCCapStyle;
newGC = Tk_GetGC(tkwin, mask, &gcValues);
} else {
newGC = NULL;
}
if (rectOvalPtr->outline.gc != NULL) {
Tk_FreeGC(Tk_Display(tkwin), rectOvalPtr->outline.gc);
}
rectOvalPtr->outline.gc = newGC;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
if (state == TK_STATE_HIDDEN) {
ComputeRectOvalBbox(canvas, rectOvalPtr);
return TCL_OK;
}
color = rectOvalPtr->fillColor;
stipple = rectOvalPtr->fillStipple;
if (Canvas(canvas)->currentItemPtr == itemPtr) {
if (rectOvalPtr->activeFillColor!=NULL) {
color = rectOvalPtr->activeFillColor;
}
if (rectOvalPtr->activeFillStipple!=None) {
stipple = rectOvalPtr->activeFillStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (rectOvalPtr->disabledFillColor!=NULL) {
color = rectOvalPtr->disabledFillColor;
}
if (rectOvalPtr->disabledFillStipple!=None) {
stipple = rectOvalPtr->disabledFillStipple;
}
}
if (color == NULL) {
newGC = NULL;
} else {
gcValues.foreground = color->pixel;
if (stipple != None) {
gcValues.stipple = stipple;
gcValues.fill_style = FillStippled;
mask = GCForeground|GCStipple|GCFillStyle;
} else {
mask = GCForeground;
}
#ifdef MAC_OSX_TK
/*
* Mac OS X CG drawing needs access to the outline linewidth even for
* fills (as linewidth controls antialiasing).
*/
gcValues.line_width = rectOvalPtr->outline.gc != NULL ?
rectOvalPtr->outline.gc->line_width : 0;
mask |= GCLineWidth;
#endif
newGC = Tk_GetGC(tkwin, mask, &gcValues);
}
if (rectOvalPtr->fillGC != NULL) {
Tk_FreeGC(Tk_Display(tkwin), rectOvalPtr->fillGC);
}
rectOvalPtr->fillGC = newGC;
tsoffset = &rectOvalPtr->tsoffset;
flags = tsoffset->flags;
if (flags & TK_OFFSET_LEFT) {
tsoffset->xoffset = (int) (rectOvalPtr->bbox[0] + 0.5);
} else if (flags & TK_OFFSET_CENTER) {
tsoffset->xoffset = (int)
((rectOvalPtr->bbox[0]+rectOvalPtr->bbox[2]+1)/2);
} else if (flags & TK_OFFSET_RIGHT) {
tsoffset->xoffset = (int) (rectOvalPtr->bbox[2] + 0.5);
}
if (flags & TK_OFFSET_TOP) {
tsoffset->yoffset = (int) (rectOvalPtr->bbox[1] + 0.5);
} else if (flags & TK_OFFSET_MIDDLE) {
tsoffset->yoffset = (int)
((rectOvalPtr->bbox[1]+rectOvalPtr->bbox[3]+1)/2);
} else if (flags & TK_OFFSET_BOTTOM) {
tsoffset->yoffset = (int) (rectOvalPtr->bbox[3] + 0.5);
}
ComputeRectOvalBbox(canvas, rectOvalPtr);
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* DeleteRectOval --
*
* This function is called to clean up the data structure associated with
* a rectangle or oval item.
*
* Results:
* None.
*
* Side effects:
* Resources associated with itemPtr are released.
*
*--------------------------------------------------------------
*/
static void
DeleteRectOval(
Tk_Canvas canvas, /* Info about overall widget. */
Tk_Item *itemPtr, /* Item that is being deleted. */
Display *display) /* Display containing window for canvas. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
Tk_DeleteOutline(display, &(rectOvalPtr->outline));
if (rectOvalPtr->fillColor != NULL) {
Tk_FreeColor(rectOvalPtr->fillColor);
}
if (rectOvalPtr->activeFillColor != NULL) {
Tk_FreeColor(rectOvalPtr->activeFillColor);
}
if (rectOvalPtr->disabledFillColor != NULL) {
Tk_FreeColor(rectOvalPtr->disabledFillColor);
}
if (rectOvalPtr->fillStipple != None) {
Tk_FreeBitmap(display, rectOvalPtr->fillStipple);
}
if (rectOvalPtr->activeFillStipple != None) {
Tk_FreeBitmap(display, rectOvalPtr->activeFillStipple);
}
if (rectOvalPtr->disabledFillStipple != None) {
Tk_FreeBitmap(display, rectOvalPtr->disabledFillStipple);
}
if (rectOvalPtr->fillGC != NULL) {
Tk_FreeGC(display, rectOvalPtr->fillGC);
}
}
/*
*--------------------------------------------------------------
*
* ComputeRectOvalBbox --
*
* This function is invoked to compute the bounding box of all the pixels
* that may be drawn as part of a rectangle or oval.
*
* Results:
* None.
*
* Side effects:
* The fields x1, y1, x2, and y2 are updated in the header for itemPtr.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static void
ComputeRectOvalBbox(
Tk_Canvas canvas, /* Canvas that contains item. */
RectOvalItem *rectOvalPtr) /* Item whose bbox is to be recomputed. */
{
int bloat, tmp;
double dtmp, width;
Tk_State state = rectOvalPtr->header.state;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
width = rectOvalPtr->outline.width;
if (state == TK_STATE_HIDDEN) {
rectOvalPtr->header.x1 = rectOvalPtr->header.y1 =
rectOvalPtr->header.x2 = rectOvalPtr->header.y2 = -1;
return;
}
if (Canvas(canvas)->currentItemPtr == (Tk_Item *) rectOvalPtr) {
if (rectOvalPtr->outline.activeWidth>width) {
width = rectOvalPtr->outline.activeWidth;
}
} else if (state == TK_STATE_DISABLED) {
if (rectOvalPtr->outline.disabledWidth>0) {
width = rectOvalPtr->outline.disabledWidth;
}
}
/*
* Make sure that the first coordinates are the lowest ones.
*/
if (rectOvalPtr->bbox[1] > rectOvalPtr->bbox[3]) {
double tmpY = rectOvalPtr->bbox[3];
rectOvalPtr->bbox[3] = rectOvalPtr->bbox[1];
rectOvalPtr->bbox[1] = tmpY;
}
if (rectOvalPtr->bbox[0] > rectOvalPtr->bbox[2]) {
double tmpX = rectOvalPtr->bbox[2];
rectOvalPtr->bbox[2] = rectOvalPtr->bbox[0];
rectOvalPtr->bbox[0] = tmpX;
}
if (rectOvalPtr->outline.gc == NULL) {
/*
* The Win32 switch was added for 8.3 to solve a problem with ovals
* leaving traces on bottom and right of 1 pixel. This may not be the
* correct place to solve it, but it works.
*/
#ifdef _WIN32
bloat = 1;
#else
bloat = 0;
#endif /* _WIN32 */
} else {
#ifdef MAC_OSX_TK
/*
* Mac OS X CoreGraphics needs correct rounding here otherwise it will
* draw outside the bounding box. Probably correct on other platforms
* as well?
*/
bloat = (int) (width+1.5)/2;
#else
bloat = (int) (width+1)/2;
#endif /* MAC_OSX_TK */
}
/*
* Special note: the rectangle is always drawn at least 1x1 in size, so
* round up the upper coordinates to be at least 1 unit greater than the
* lower ones.
*/
tmp = (int) ((rectOvalPtr->bbox[0] >= 0) ? rectOvalPtr->bbox[0] + .5
: rectOvalPtr->bbox[0] - .5);
rectOvalPtr->header.x1 = tmp - bloat;
tmp = (int) ((rectOvalPtr->bbox[1] >= 0) ? rectOvalPtr->bbox[1] + .5
: rectOvalPtr->bbox[1] - .5);
rectOvalPtr->header.y1 = tmp - bloat;
dtmp = rectOvalPtr->bbox[2];
if (dtmp < (rectOvalPtr->bbox[0] + 1)) {
dtmp = rectOvalPtr->bbox[0] + 1;
}
tmp = (int) ((dtmp >= 0) ? dtmp + .5 : dtmp - .5);
rectOvalPtr->header.x2 = tmp + bloat;
dtmp = rectOvalPtr->bbox[3];
if (dtmp < (rectOvalPtr->bbox[1] + 1)) {
dtmp = rectOvalPtr->bbox[1] + 1;
}
tmp = (int) ((dtmp >= 0) ? dtmp + .5 : dtmp - .5);
rectOvalPtr->header.y2 = tmp + bloat;
}
/*
*--------------------------------------------------------------
*
* DisplayRectOval --
*
* This function is invoked to draw a rectangle or oval item in a given
* drawable.
*
* Results:
* None.
*
* Side effects:
* ItemPtr is drawn in drawable using the transformation information in
* canvas.
*
*--------------------------------------------------------------
*/
static void
DisplayRectOval(
Tk_Canvas canvas, /* Canvas that contains item. */
Tk_Item *itemPtr, /* Item to be displayed. */
Display *display, /* Display on which to draw item. */
Drawable drawable, /* Pixmap or window in which to draw item. */
int x, int y, int width, int height)
/* Describes region of canvas that must be
* redisplayed (not used). */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
short x1, y1, x2, y2;
Pixmap fillStipple;
Tk_State state = itemPtr->state;
/*
* Compute the screen coordinates of the bounding box for the item. Make
* sure that the bbox is at least one pixel large, since some X servers
* will die if it isn't.
*/
Tk_CanvasDrawableCoords(canvas, rectOvalPtr->bbox[0],rectOvalPtr->bbox[1],
&x1, &y1);
Tk_CanvasDrawableCoords(canvas, rectOvalPtr->bbox[2],rectOvalPtr->bbox[3],
&x2, &y2);
if (x2 == x1) {
/*
* The width of the bounding box corresponds to less than one pixel
* on screen. Adjustment is needed to avoid drawing attempts with zero
* width items (which would draw nothing). The bounding box spans
* either 1 or 2 pixels. Select which pixel will be drawn.
*/
short ix1 = (short) (rectOvalPtr->bbox[0]);
short ix2 = (short) (rectOvalPtr->bbox[2]);
if (ix1 == ix2) {
/*
* x1 and x2 are "within the same pixel". Use this pixel.
* Note: the degenerated case (bbox[0]==bbox[2]) of a completely
* flat box results in arbitrary selection of the pixel at the
* right (with positive coordinate) or left (with negative
* coordinate) of the box. There is no "best choice" here.
*/
if (ix1 > 0) {
x2 += 1;
} else {
x1 -= 1;
}
} else {
/*
* (x1,x2) span two pixels. Select the one with the larger
* covered "area".
*/
if (ix1 > 0) {
if ((rectOvalPtr->bbox[2] - ix2) > (ix2 - rectOvalPtr->bbox[0])) {
x2 += 1;
} else {
x1 -= 1;
}
} else {
if ((rectOvalPtr->bbox[2] - ix1) > (ix1 - rectOvalPtr->bbox[0])) {
x2 += 1;
} else {
x1 -= 1;
}
}
}
}
if (y2 == y1) {
/*
* The height of the bounding box corresponds to less than one pixel
* on screen. Adjustment is needed to avoid drawing attempts with zero
* height items (which would draw nothing). The bounding box spans
* either 1 or 2 pixels. Select which pixel will be drawn.
*/
short iy1 = (short) (rectOvalPtr->bbox[1]);
short iy2 = (short) (rectOvalPtr->bbox[3]);
if (iy1 == iy2) {
/*
* y1 and y2 are "within the same pixel". Use this pixel.
* Note: the degenerated case (bbox[1]==bbox[3]) of a completely
* flat box results in arbitrary selection of the pixel below
* (with positive coordinate) or above (with negative coordinate)
* the box. There is no "best choice" here.
*/
if (iy1 > 0) {
y2 += 1;
} else {
y1 -= 1;
}
} else {
/*
* (y1,y2) span two pixels. Select the one with the larger
* covered "area".
*/
if (iy1 > 0) {
if ((rectOvalPtr->bbox[3] - iy2) > (iy2 - rectOvalPtr->bbox[1])) {
y2 += 1;
} else {
y1 -= 1;
}
} else {
if ((rectOvalPtr->bbox[3] - iy1) > (iy1 - rectOvalPtr->bbox[1])) {
y2 += 1;
} else {
y1 -= 1;
}
}
}
}
/*
* Display filled part first (if wanted), then outline. If we're
* stippling, then modify the stipple offset in the GC. Be sure to reset
* the offset when done, since the GC is supposed to be read-only.
*/
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
fillStipple = rectOvalPtr->fillStipple;
if (Canvas(canvas)->currentItemPtr == (Tk_Item *) rectOvalPtr) {
if (rectOvalPtr->activeFillStipple != None) {
fillStipple = rectOvalPtr->activeFillStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (rectOvalPtr->disabledFillStipple != None) {
fillStipple = rectOvalPtr->disabledFillStipple;
}
}
if (rectOvalPtr->fillGC != NULL) {
if (fillStipple != None) {
Tk_TSOffset *tsoffset;
int w = 0, h = 0;
tsoffset = &rectOvalPtr->tsoffset;
if (tsoffset) {
int flags = tsoffset->flags;
if (flags & (TK_OFFSET_CENTER|TK_OFFSET_MIDDLE)) {
Tk_SizeOfBitmap(display, fillStipple, &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, rectOvalPtr->fillGC, tsoffset);
if (tsoffset) {
tsoffset->xoffset += w;
tsoffset->yoffset += h;
}
}
if (rectOvalPtr->header.typePtr == &tkRectangleType) {
XFillRectangle(display, drawable, rectOvalPtr->fillGC,
x1, y1, (unsigned int) (x2-x1), (unsigned int) (y2-y1));
} else {
XFillArc(display, drawable, rectOvalPtr->fillGC,
x1, y1, (unsigned) (x2-x1), (unsigned) (y2-y1),
0, 360*64);
}
if (fillStipple != None) {
XSetTSOrigin(display, rectOvalPtr->fillGC, 0, 0);
}
}
if (rectOvalPtr->outline.gc != NULL) {
Tk_ChangeOutlineGC(canvas, itemPtr, &(rectOvalPtr->outline));
if (rectOvalPtr->header.typePtr == &tkRectangleType) {
XDrawRectangle(display, drawable, rectOvalPtr->outline.gc,
x1, y1, (unsigned) (x2-x1), (unsigned) (y2-y1));
} else {
XDrawArc(display, drawable, rectOvalPtr->outline.gc,
x1, y1, (unsigned) (x2-x1), (unsigned) (y2-y1), 0, 360*64);
}
Tk_ResetOutlineGC(canvas, itemPtr, &(rectOvalPtr->outline));
}
}
/*
*--------------------------------------------------------------
*
* RectToPoint --
*
* Computes the distance from a given point to a given rectangle, in
* canvas units.
*
* Results:
* The return value is 0 if the point whose x and y coordinates are
* coordPtr[0] and coordPtr[1] is inside the rectangle. If the point
* isn't inside the rectangle then the return value is the distance from
* the point to the rectangle. If itemPtr is filled, then anywhere in the
* interior is considered "inside"; if itemPtr isn't filled, then
* "inside" means only the area occupied by the outline.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static double
RectToPoint(
Tk_Canvas canvas, /* Canvas containing item. */
Tk_Item *itemPtr, /* Item to check against point. */
double *pointPtr) /* Pointer to x and y coordinates. */
{
RectOvalItem *rectPtr = (RectOvalItem *) itemPtr;
double xDiff, yDiff, x1, y1, x2, y2, inc, tmp;
double width;
Tk_State state = itemPtr->state;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
width = rectPtr->outline.width;
if (Canvas(canvas)->currentItemPtr == itemPtr) {
if (rectPtr->outline.activeWidth>width) {
width = rectPtr->outline.activeWidth;
}
} else if (state == TK_STATE_DISABLED) {
if (rectPtr->outline.disabledWidth>0) {
width = rectPtr->outline.disabledWidth;
}
}
/*
* Generate a new larger rectangle that includes the border width, if
* there is one.
*/
x1 = rectPtr->bbox[0];
y1 = rectPtr->bbox[1];
x2 = rectPtr->bbox[2];
y2 = rectPtr->bbox[3];
if (rectPtr->outline.gc != NULL) {
inc = width/2.0;
x1 -= inc;
y1 -= inc;
x2 += inc;
y2 += inc;
}
/*
* If the point is inside the rectangle, handle specially: distance is 0
* if rectangle is filled, otherwise compute distance to nearest edge of
* rectangle and subtract width of edge.
*/
if ((pointPtr[0] >= x1) && (pointPtr[0] < x2)
&& (pointPtr[1] >= y1) && (pointPtr[1] < y2)) {
if ((rectPtr->fillGC != NULL) || (rectPtr->outline.gc == NULL)) {
return 0.0;
}
xDiff = pointPtr[0] - x1;
tmp = x2 - pointPtr[0];
if (tmp < xDiff) {
xDiff = tmp;
}
yDiff = pointPtr[1] - y1;
tmp = y2 - pointPtr[1];
if (tmp < yDiff) {
yDiff = tmp;
}
if (yDiff < xDiff) {
xDiff = yDiff;
}
xDiff -= width;
if (xDiff < 0.0) {
return 0.0;
}
return xDiff;
}
/*
* Point is outside rectangle.
*/
if (pointPtr[0] < x1) {
xDiff = x1 - pointPtr[0];
} else if (pointPtr[0] > x2) {
xDiff = pointPtr[0] - x2;
} else {
xDiff = 0;
}
if (pointPtr[1] < y1) {
yDiff = y1 - pointPtr[1];
} else if (pointPtr[1] > y2) {
yDiff = pointPtr[1] - y2;
} else {
yDiff = 0;
}
return hypot(xDiff, yDiff);
}
/*
*--------------------------------------------------------------
*
* OvalToPoint --
*
* Computes the distance from a given point to a given oval, in canvas
* units.
*
* Results:
* The return value is 0 if the point whose x and y coordinates are
* coordPtr[0] and coordPtr[1] is inside the oval. If the point isn't
* inside the oval then the return value is the distance from the point
* to the oval. If itemPtr is filled, then anywhere in the interior is
* considered "inside"; if itemPtr isn't filled, then "inside" means only
* the area occupied by the outline.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static double
OvalToPoint(
Tk_Canvas canvas, /* Canvas containing item. */
Tk_Item *itemPtr, /* Item to check against point. */
double *pointPtr) /* Pointer to x and y coordinates. */
{
RectOvalItem *ovalPtr = (RectOvalItem *) itemPtr;
double width;
int filled;
Tk_State state = itemPtr->state;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
width = (double) ovalPtr->outline.width;
if (Canvas(canvas)->currentItemPtr == itemPtr) {
if (ovalPtr->outline.activeWidth>width) {
width = (double) ovalPtr->outline.activeWidth;
}
} else if (state == TK_STATE_DISABLED) {
if (ovalPtr->outline.disabledWidth>0) {
width = (double) ovalPtr->outline.disabledWidth;
}
}
filled = ovalPtr->fillGC != NULL;
if (ovalPtr->outline.gc == NULL) {
width = 0.0;
filled = 1;
}
return TkOvalToPoint(ovalPtr->bbox, width, filled, pointPtr);
}
/*
*--------------------------------------------------------------
*
* RectToArea --
*
* This function is called to determine whether an item lies entirely
* inside, entirely outside, or overlapping a given rectangle.
*
* Results:
* -1 is returned if the item is entirely outside the area given by
* rectPtr, 0 if it overlaps, and 1 if it is entirely inside the given
* area.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static int
RectToArea(
Tk_Canvas canvas, /* Canvas containing item. */
Tk_Item *itemPtr, /* Item to check against rectangle. */
double *areaPtr) /* Pointer to array of four coordinates (x1,
* y1, x2, y2) describing rectangular area. */
{
RectOvalItem *rectPtr = (RectOvalItem *) itemPtr;
double halfWidth;
double width;
Tk_State state = itemPtr->state;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
width = rectPtr->outline.width;
if (Canvas(canvas)->currentItemPtr == itemPtr) {
if (rectPtr->outline.activeWidth > width) {
width = rectPtr->outline.activeWidth;
}
} else if (state == TK_STATE_DISABLED) {
if (rectPtr->outline.disabledWidth > 0) {
width = rectPtr->outline.disabledWidth;
}
}
halfWidth = width/2.0;
if (rectPtr->outline.gc == NULL) {
halfWidth = 0.0;
}
if ((areaPtr[2] <= (rectPtr->bbox[0] - halfWidth))
|| (areaPtr[0] >= (rectPtr->bbox[2] + halfWidth))
|| (areaPtr[3] <= (rectPtr->bbox[1] - halfWidth))
|| (areaPtr[1] >= (rectPtr->bbox[3] + halfWidth))) {
return -1;
}
if ((rectPtr->fillGC == NULL) && (rectPtr->outline.gc != NULL)
&& (areaPtr[0] >= (rectPtr->bbox[0] + halfWidth))
&& (areaPtr[1] >= (rectPtr->bbox[1] + halfWidth))
&& (areaPtr[2] <= (rectPtr->bbox[2] - halfWidth))
&& (areaPtr[3] <= (rectPtr->bbox[3] - halfWidth))) {
return -1;
}
if ((areaPtr[0] <= (rectPtr->bbox[0] - halfWidth))
&& (areaPtr[1] <= (rectPtr->bbox[1] - halfWidth))
&& (areaPtr[2] >= (rectPtr->bbox[2] + halfWidth))
&& (areaPtr[3] >= (rectPtr->bbox[3] + halfWidth))) {
return 1;
}
return 0;
}
/*
*--------------------------------------------------------------
*
* OvalToArea --
*
* This function is called to determine whether an item lies entirely
* inside, entirely outside, or overlapping a given rectangular area.
*
* Results:
* -1 is returned if the item is entirely outside the area given by
* rectPtr, 0 if it overlaps, and 1 if it is entirely inside the given
* area.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static int
OvalToArea(
Tk_Canvas canvas, /* Canvas containing item. */
Tk_Item *itemPtr, /* Item to check against oval. */
double *areaPtr) /* Pointer to array of four coordinates (x1,
* y1, x2, y2) describing rectangular area. */
{
RectOvalItem *ovalPtr = (RectOvalItem *) itemPtr;
double oval[4], halfWidth, width;
int result;
Tk_State state = itemPtr->state;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
width = ovalPtr->outline.width;
if (Canvas(canvas)->currentItemPtr == itemPtr) {
if (ovalPtr->outline.activeWidth > width) {
width = ovalPtr->outline.activeWidth;
}
} else if (state == TK_STATE_DISABLED) {
if (ovalPtr->outline.disabledWidth > 0) {
width = ovalPtr->outline.disabledWidth;
}
}
/*
* Expand the oval to include the width of the outline, if any.
*/
halfWidth = width/2.0;
if (ovalPtr->outline.gc == NULL) {
halfWidth = 0.0;
}
oval[0] = ovalPtr->bbox[0] - halfWidth;
oval[1] = ovalPtr->bbox[1] - halfWidth;
oval[2] = ovalPtr->bbox[2] + halfWidth;
oval[3] = ovalPtr->bbox[3] + halfWidth;
result = TkOvalToArea(oval, areaPtr);
/*
* If the rectangle appears to overlap the oval and the oval isn't filled,
* do one more check to see if perhaps all four of the rectangle's corners
* are totally inside the oval's unfilled center, in which case we should
* return "outside".
*/
if ((result == 0) && (ovalPtr->outline.gc != NULL)
&& (ovalPtr->fillGC == NULL)) {
double centerX, centerY, height;
double xDelta1, yDelta1, xDelta2, yDelta2;
centerX = (ovalPtr->bbox[0] + ovalPtr->bbox[2])/2.0;
centerY = (ovalPtr->bbox[1] + ovalPtr->bbox[3])/2.0;
width = (ovalPtr->bbox[2] - ovalPtr->bbox[0])/2.0 - halfWidth;
height = (ovalPtr->bbox[3] - ovalPtr->bbox[1])/2.0 - halfWidth;
xDelta1 = (areaPtr[0] - centerX)/width;
xDelta1 *= xDelta1;
yDelta1 = (areaPtr[1] - centerY)/height;
yDelta1 *= yDelta1;
xDelta2 = (areaPtr[2] - centerX)/width;
xDelta2 *= xDelta2;
yDelta2 = (areaPtr[3] - centerY)/height;
yDelta2 *= yDelta2;
if (((xDelta1 + yDelta1) < 1.0)
&& ((xDelta1 + yDelta2) < 1.0)
&& ((xDelta2 + yDelta1) < 1.0)
&& ((xDelta2 + yDelta2) < 1.0)) {
return -1;
}
}
return result;
}
/*
*--------------------------------------------------------------
*
* ScaleRectOval --
*
* This function is invoked to rescale a rectangle or oval item.
*
* Results:
* None.
*
* Side effects:
* The rectangle or oval referred to by itemPtr is rescaled so that the
* following transformation is applied to all point coordinates:
* x' = originX + scaleX*(x-originX)
* y' = originY + scaleY*(y-originY)
*
*--------------------------------------------------------------
*/
static void
ScaleRectOval(
Tk_Canvas canvas, /* Canvas containing rectangle. */
Tk_Item *itemPtr, /* Rectangle to be scaled. */
double originX, double originY,
/* Origin about which to scale rect. */
double scaleX, /* Amount to scale in X direction. */
double scaleY) /* Amount to scale in Y direction. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
rectOvalPtr->bbox[0] = originX + scaleX*(rectOvalPtr->bbox[0] - originX);
rectOvalPtr->bbox[1] = originY + scaleY*(rectOvalPtr->bbox[1] - originY);
rectOvalPtr->bbox[2] = originX + scaleX*(rectOvalPtr->bbox[2] - originX);
rectOvalPtr->bbox[3] = originY + scaleY*(rectOvalPtr->bbox[3] - originY);
ComputeRectOvalBbox(canvas, rectOvalPtr);
}
/*
*--------------------------------------------------------------
*
* TranslateRectOval --
*
* This function is called to move a rectangle or oval by a given amount.
*
* Results:
* None.
*
* Side effects:
* The position of the rectangle or oval is offset by (xDelta, yDelta),
* and the bounding box is updated in the generic part of the item
* structure.
*
*--------------------------------------------------------------
*/
static void
TranslateRectOval(
Tk_Canvas canvas, /* Canvas containing item. */
Tk_Item *itemPtr, /* Item that is being moved. */
double deltaX, double deltaY)
/* Amount by which item is to be moved. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
rectOvalPtr->bbox[0] += deltaX;
rectOvalPtr->bbox[1] += deltaY;
rectOvalPtr->bbox[2] += deltaX;
rectOvalPtr->bbox[3] += deltaY;
ComputeRectOvalBbox(canvas, rectOvalPtr);
}
/*
*--------------------------------------------------------------
*
* RectOvalToPostscript --
*
* This function is called to generate Postscript for rectangle and oval
* items.
*
* Results:
* The return value is a standard Tcl result. If an error occurs in
* generating Postscript then an error message is left in the interp's
* result, replacing whatever used to be there. If no error occurs, then
* Postscript for the rectangle is appended to the result.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
static int
RectOvalToPostscript(
Tcl_Interp *interp, /* Interpreter for error reporting. */
Tk_Canvas canvas, /* Information about overall canvas. */
Tk_Item *itemPtr, /* Item for which Postscript is wanted. */
int prepass) /* 1 means this is a prepass to collect font
* information; 0 means final Postscript is
* being created. */
{
Tcl_Obj *pathObj, *psObj;
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
double y1, y2;
XColor *color;
XColor *fillColor;
Pixmap fillStipple;
Tk_State state = itemPtr->state;
Tcl_InterpState interpState;
y1 = Tk_CanvasPsY(canvas, rectOvalPtr->bbox[1]);
y2 = Tk_CanvasPsY(canvas, rectOvalPtr->bbox[3]);
/*
* Generate a string that creates a path for the rectangle or oval. This
* is the only part of the function's code that is type-specific.
*/
if (rectOvalPtr->header.typePtr == &tkRectangleType) {
pathObj = Tcl_ObjPrintf(
"%.15g %.15g moveto "
"%.15g 0 rlineto "
"0 %.15g rlineto "
"%.15g 0 rlineto "
"closepath\n",
rectOvalPtr->bbox[0], y1,
rectOvalPtr->bbox[2]-rectOvalPtr->bbox[0],
y2-y1,
rectOvalPtr->bbox[0]-rectOvalPtr->bbox[2]);
} else {
pathObj = Tcl_ObjPrintf(
"matrix currentmatrix\n"
"%.15g %.15g translate "
"%.15g %.15g scale "
"1 0 moveto 0 0 1 0 360 arc\n"
"setmatrix\n",
(rectOvalPtr->bbox[0] + rectOvalPtr->bbox[2])/2, (y1 + y2)/2,
(rectOvalPtr->bbox[2] - rectOvalPtr->bbox[0])/2, (y1 - y2)/2);
}
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
color = rectOvalPtr->outline.color;
fillColor = rectOvalPtr->fillColor;
fillStipple = rectOvalPtr->fillStipple;
if (Canvas(canvas)->currentItemPtr == itemPtr) {
if (rectOvalPtr->outline.activeColor!=NULL) {
color = rectOvalPtr->outline.activeColor;
}
if (rectOvalPtr->activeFillColor!=NULL) {
fillColor = rectOvalPtr->activeFillColor;
}
if (rectOvalPtr->activeFillStipple!=None) {
fillStipple = rectOvalPtr->activeFillStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (rectOvalPtr->outline.disabledColor!=NULL) {
color = rectOvalPtr->outline.disabledColor;
}
if (rectOvalPtr->disabledFillColor!=NULL) {
fillColor = rectOvalPtr->disabledFillColor;
}
if (rectOvalPtr->disabledFillStipple!=None) {
fillStipple = rectOvalPtr->disabledFillStipple;
}
}
/*
* Make our working space.
*/
psObj = Tcl_NewObj();
interpState = Tcl_SaveInterpState(interp, TCL_OK);
/*
* First draw the filled area of the rectangle.
*/
if (fillColor != NULL) {
Tcl_AppendObjToObj(psObj, pathObj);
Tcl_ResetResult(interp);
if (Tk_CanvasPsColor(interp, canvas, fillColor) != TCL_OK) {
goto error;
}
Tcl_AppendObjToObj(psObj, Tcl_GetObjResult(interp));
if (fillStipple != None) {
Tcl_AppendToObj(psObj, "clip ", -1);
Tcl_ResetResult(interp);
if (Tk_CanvasPsStipple(interp, canvas, fillStipple) != TCL_OK) {
goto error;
}
Tcl_AppendObjToObj(psObj, Tcl_GetObjResult(interp));
if (color != NULL) {
Tcl_AppendToObj(psObj, "grestore gsave\n", -1);
}
} else {
Tcl_AppendToObj(psObj, "fill\n", -1);
}
}
/*
* Now draw the outline, if there is one.
*/
if (color != NULL) {
Tcl_AppendObjToObj(psObj, pathObj);
Tcl_AppendToObj(psObj, "0 setlinejoin 2 setlinecap\n", -1);
Tcl_ResetResult(interp);
if (Tk_CanvasPsOutline(canvas, itemPtr,
&rectOvalPtr->outline)!= TCL_OK) {
goto error;
}
Tcl_AppendObjToObj(psObj, Tcl_GetObjResult(interp));
}
/*
* Plug the accumulated postscript back into the result.
*/
(void) Tcl_RestoreInterpState(interp, interpState);
Tcl_AppendObjToObj(Tcl_GetObjResult(interp), psObj);
Tcl_DecrRefCount(psObj);
Tcl_DecrRefCount(pathObj);
return TCL_OK;
error:
Tcl_DiscardInterpState(interpState);
Tcl_DecrRefCount(psObj);
Tcl_DecrRefCount(pathObj);
return TCL_ERROR;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/