static int
CanvasPsWindow(
Tcl_Interp *interp, /* Leave Postscript or error message here. */
Tk_Window tkwin, /* window to be printed */
Tk_Canvas canvas, /* Information about overall canvas. */
double x, double y, /* origin of window. */
int width, int height) /* width/height of window. */
{
XImage *ximage;
int result;
#ifdef X_GetImage
Tk_ErrorHandler handle;
#endif
Tcl_Obj *cmdObj, *psObj;
Tcl_InterpState interpState = Tcl_SaveInterpState(interp, TCL_OK);
/*
* Locate the subwindow within the wider window.
*/
psObj = Tcl_ObjPrintf(
"\n%%%% %s item (%s, %d x %d)\n" /* Comment */
"%.15g %.15g translate\n", /* Position */
Tk_Class(tkwin), Tk_PathName(tkwin), width, height, x, y);
/*
* First try if the widget has its own "postscript" command. If it exists,
* this will produce much better postscript than when a pixmap is used.
*/
Tcl_ResetResult(interp);
cmdObj = Tcl_ObjPrintf("%s postscript -prolog 0", Tk_PathName(tkwin));
Tcl_IncrRefCount(cmdObj);
result = Tcl_EvalObjEx(interp, cmdObj, 0);
Tcl_DecrRefCount(cmdObj);
if (result == TCL_OK) {
Tcl_AppendPrintfToObj(psObj,
"50 dict begin\nsave\ngsave\n"
"0 %d moveto %d 0 rlineto 0 -%d rlineto -%d 0 rlineto closepath\n"
"1.000 1.000 1.000 setrgbcolor AdjustColor\nfill\ngrestore\n",
height, width, height, width);
Tcl_AppendObjToObj(psObj, Tcl_GetObjResult(interp));
Tcl_AppendToObj(psObj, "\nrestore\nend\n\n\n", -1);
goto done;
}
/*
* If the window is off the screen it will generate a BadMatch/XError. We
* catch any BadMatch errors here
*/
#ifdef X_GetImage
handle = Tk_CreateErrorHandler(Tk_Display(tkwin), BadMatch,
X_GetImage, -1, xerrorhandler, tkwin);
#endif
/*
* Generate an XImage from the window. We can then read pixel values out
* of the XImage.
*/
ximage = XGetImage(Tk_Display(tkwin), Tk_WindowId(tkwin), 0, 0,
(unsigned) width, (unsigned) height, AllPlanes, ZPixmap);
#ifdef X_GetImage
Tk_DeleteErrorHandler(handle);
#endif
if (ximage == NULL) {
result = TCL_OK;
} else {
Tcl_ResetResult(interp);
result = TkPostscriptImage(interp, tkwin, Canvas(canvas)->psInfo,
ximage, 0, 0, width, height);
Tcl_AppendObjToObj(psObj, Tcl_GetObjResult(interp));
XDestroyImage(ximage);
}
/*
* Plug the accumulated postscript back into the result.
*/
done:
if (result == TCL_OK) {
(void) Tcl_RestoreInterpState(interp, interpState);
Tcl_AppendObjToObj(Tcl_GetObjResult(interp), psObj);
} else {
Tcl_DiscardInterpState(interpState);
}
Tcl_DecrRefCount(psObj);
return result;
}
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;
}
static int
TextToPostscript(
Tcl_Interp *interp, /* Leave Postscript or error message here. */
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. */
{
TextItem *textPtr = (TextItem *) itemPtr;
double x, y;
Tk_FontMetrics fm;
const char *justify;
XColor *color;
Pixmap stipple;
Tk_State state = itemPtr->state;
Tcl_Obj *psObj;
Tcl_InterpState interpState;
if (state == TK_STATE_NULL) {
state = Canvas(canvas)->canvas_state;
}
color = textPtr->color;
stipple = textPtr->stipple;
if (state == TK_STATE_HIDDEN || textPtr->color == NULL ||
textPtr->text == NULL || *textPtr->text == 0) {
return TCL_OK;
} else if (Canvas(canvas)->currentItemPtr == itemPtr) {
if (textPtr->activeColor != NULL) {
color = textPtr->activeColor;
}
if (textPtr->activeStipple != None) {
stipple = textPtr->activeStipple;
}
} else if (state == TK_STATE_DISABLED) {
if (textPtr->disabledColor != NULL) {
color = textPtr->disabledColor;
}
if (textPtr->disabledStipple != None) {
stipple = textPtr->disabledStipple;
}
}
/*
* Make our working space.
*/
psObj = Tcl_NewObj();
interpState = Tcl_SaveInterpState(interp, TCL_OK);
/*
* Generate postscript.
*/
Tcl_ResetResult(interp);
if (Tk_CanvasPsFont(interp, canvas, textPtr->tkfont) != TCL_OK) {
goto error;
}
Tcl_AppendObjToObj(psObj, Tcl_GetObjResult(interp));
if (prepass != 0) {
goto done;
}
Tcl_ResetResult(interp);
if (Tk_CanvasPsColor(interp, canvas, color) != TCL_OK) {
goto error;
}
Tcl_AppendObjToObj(psObj, Tcl_GetObjResult(interp));
if (stipple != None) {
Tcl_ResetResult(interp);
Tk_CanvasPsStipple(interp, canvas, stipple);
Tcl_AppendPrintfToObj(psObj, "/StippleText {\n %s} bind def\n",
Tcl_GetString(Tcl_GetObjResult(interp)));
}
x = 0; y = 0; justify = NULL; /* lint. */
switch (textPtr->anchor) {
case TK_ANCHOR_NW: x = 0; y = 0; break;
case TK_ANCHOR_N: x = 1; y = 0; break;
case TK_ANCHOR_NE: x = 2; y = 0; break;
case TK_ANCHOR_E: x = 2; y = 1; break;
case TK_ANCHOR_SE: x = 2; y = 2; break;
case TK_ANCHOR_S: x = 1; y = 2; break;
case TK_ANCHOR_SW: x = 0; y = 2; break;
case TK_ANCHOR_W: x = 0; y = 1; break;
case TK_ANCHOR_CENTER: x = 1; y = 1; break;
}
switch (textPtr->justify) {
case TK_JUSTIFY_LEFT: justify = "0"; break;
case TK_JUSTIFY_CENTER: justify = "0.5"; break;
case TK_JUSTIFY_RIGHT: justify = "1"; break;
}
Tk_GetFontMetrics(textPtr->tkfont, &fm);
Tcl_AppendPrintfToObj(psObj, "%.15g %.15g %.15g [\n",
textPtr->angle, textPtr->x, Tk_CanvasPsY(canvas, textPtr->y));
Tcl_ResetResult(interp);
Tk_TextLayoutToPostscript(interp, textPtr->textLayout);
Tcl_AppendObjToObj(psObj, Tcl_GetObjResult(interp));
Tcl_AppendPrintfToObj(psObj,
"] %d %g %g %s %s DrawText\n",
fm.linespace, x / -2.0, y / 2.0, justify,
((stipple == None) ? "false" : "true"));
/*
* Plug the accumulated postscript back into the result.
*/
done:
(void) Tcl_RestoreInterpState(interp, interpState);
Tcl_AppendObjToObj(Tcl_GetObjResult(interp), psObj);
Tcl_DecrRefCount(psObj);
return TCL_OK;
error:
Tcl_DiscardInterpState(interpState);
Tcl_DecrRefCount(psObj);
return TCL_ERROR;
}
