Label.c revision 5b16253f
17a84e134Smrg/***********************************************************
27a84e134Smrg
37a84e134SmrgCopyright 1987, 1988, 1994, 1998  The Open Group
47a84e134Smrg
57a84e134SmrgPermission to use, copy, modify, distribute, and sell this software and its
67a84e134Smrgdocumentation for any purpose is hereby granted without fee, provided that
77a84e134Smrgthe above copyright notice appear in all copies and that both that
87a84e134Smrgcopyright notice and this permission notice appear in supporting
97a84e134Smrgdocumentation.
107a84e134Smrg
117a84e134SmrgThe above copyright notice and this permission notice shall be included in
127a84e134Smrgall copies or substantial portions of the Software.
137a84e134Smrg
147a84e134SmrgTHE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
157a84e134SmrgIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
167a84e134SmrgFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
177a84e134SmrgOPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
187a84e134SmrgAN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
197a84e134SmrgCONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
207a84e134Smrg
217a84e134SmrgExcept as contained in this notice, the name of The Open Group shall not be
227a84e134Smrgused in advertising or otherwise to promote the sale, use or other dealings
237a84e134Smrgin this Software without prior written authorization from The Open Group.
247a84e134Smrg
257a84e134Smrg
267a84e134SmrgCopyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
277a84e134Smrg
287a84e134Smrg                        All Rights Reserved
297a84e134Smrg
30421c997bSmrgPermission to use, copy, modify, and distribute this software and its
31421c997bSmrgdocumentation for any purpose and without fee is hereby granted,
327a84e134Smrgprovided that the above copyright notice appear in all copies and that
33421c997bSmrgboth that copyright notice and this permission notice appear in
347a84e134Smrgsupporting documentation, and that the name of Digital not be
357a84e134Smrgused in advertising or publicity pertaining to distribution of the
36421c997bSmrgsoftware without specific, written prior permission.
377a84e134Smrg
387a84e134SmrgDIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
397a84e134SmrgALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
407a84e134SmrgDIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
417a84e134SmrgANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
427a84e134SmrgWHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
437a84e134SmrgARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
447a84e134SmrgSOFTWARE.
457a84e134Smrg
467a84e134Smrg******************************************************************/
477a84e134Smrg
487a84e134Smrg#ifdef HAVE_CONFIG_H
497a84e134Smrg#include <config.h>
507a84e134Smrg#endif
517a84e134Smrg#include <stdio.h>
527a84e134Smrg#include <ctype.h>
537a84e134Smrg#include <X11/IntrinsicP.h>
547a84e134Smrg#include <X11/StringDefs.h>
557a84e134Smrg#include <X11/Xos.h>
567a84e134Smrg#include <X11/Xmu/Converters.h>
577a84e134Smrg#include <X11/Xmu/Drawing.h>
587a84e134Smrg#include <X11/Xaw/LabelP.h>
597a84e134Smrg#include <X11/Xaw/XawInit.h>
607a84e134Smrg#include "Private.h"
617a84e134Smrg
627a84e134Smrg#define streq(a, b)		(strcmp((a), (b)) == 0)
637a84e134Smrg
647a84e134Smrg#define MULTI_LINE_LABEL 32767
657a84e134Smrg
667a84e134Smrg
677a84e134Smrg/*
687a84e134Smrg * Class Methods
697a84e134Smrg */
707a84e134Smrgstatic void XawLabelClassInitialize(void);
717a84e134Smrgstatic void XawLabelDestroy(Widget);
727a84e134Smrgstatic void XawLabelInitialize(Widget, Widget, ArgList, Cardinal*);
737a84e134Smrgstatic XtGeometryResult XawLabelQueryGeometry(Widget, XtWidgetGeometry*,
747a84e134Smrg					      XtWidgetGeometry*);
757a84e134Smrgstatic void XawLabelRedisplay(Widget, XEvent*, Region);
767a84e134Smrgstatic void XawLabelResize(Widget);
777a84e134Smrgstatic Boolean XawLabelSetValues(Widget, Widget, Widget,
787a84e134Smrg				 ArgList, Cardinal*);
797a84e134Smrg
807a84e134Smrg/*
817a84e134Smrg * Prototypes
827a84e134Smrg */
837a84e134Smrgstatic void compute_bitmap_offsets(LabelWidget);
847a84e134Smrgstatic void GetGrayGC(LabelWidget);
857a84e134Smrgstatic void GetNormalGC(LabelWidget);
867a84e134Smrgstatic void _Reposition(LabelWidget, unsigned int, unsigned int,
877a84e134Smrg			Position*, Position*);
887a84e134Smrgstatic void set_bitmap_info(LabelWidget);
897a84e134Smrgstatic void SetTextWidthAndHeight(LabelWidget);
907a84e134Smrg
917a84e134Smrg/*
927a84e134Smrg * Initialization
937a84e134Smrg */
947a84e134Smrg#define offset(field) XtOffsetOf(LabelRec, field)
957a84e134Smrgstatic XtResource resources[] = {
967a84e134Smrg  {
977a84e134Smrg    XtNforeground,
987a84e134Smrg    XtCForeground,
997a84e134Smrg    XtRPixel,
1007a84e134Smrg    sizeof(Pixel),
1017a84e134Smrg    offset(label.foreground),
1027a84e134Smrg    XtRString,
1035ec34c4cSmrg    (XtPointer)XtDefaultForeground
1047a84e134Smrg  },
1057a84e134Smrg  {
1067a84e134Smrg    XtNfont,
1077a84e134Smrg    XtCFont,
1087a84e134Smrg    XtRFontStruct,
1097a84e134Smrg    sizeof(XFontStruct*),
1107a84e134Smrg    offset(label.font),
1117a84e134Smrg    XtRString,
1125ec34c4cSmrg    (XtPointer)XtDefaultFont
1137a84e134Smrg  },
1147a84e134Smrg  {
1157a84e134Smrg    XtNfontSet,
1167a84e134Smrg    XtCFontSet,
1177a84e134Smrg    XtRFontSet,
1187a84e134Smrg    sizeof(XFontSet),
1197a84e134Smrg    offset(label.fontset),
1207a84e134Smrg    XtRString,
1215ec34c4cSmrg    (XtPointer)XtDefaultFontSet
1227a84e134Smrg  },
1237a84e134Smrg  {
1247a84e134Smrg    XtNlabel,
1257a84e134Smrg    XtCLabel,
1267a84e134Smrg    XtRString,
1277a84e134Smrg    sizeof(String),
1287a84e134Smrg    offset(label.label),
1297a84e134Smrg    XtRString,
1307a84e134Smrg    NULL
1317a84e134Smrg  },
1327a84e134Smrg  {
1337a84e134Smrg    XtNencoding,
1347a84e134Smrg    XtCEncoding,
1357a84e134Smrg    XtRUnsignedChar,
1367a84e134Smrg    sizeof(unsigned char),
1377a84e134Smrg    offset(label.encoding),
1387a84e134Smrg    XtRImmediate,
1397a84e134Smrg    (XtPointer)XawTextEncoding8bit
1407a84e134Smrg  },
1417a84e134Smrg  {
1427a84e134Smrg    XtNjustify,
1437a84e134Smrg    XtCJustify,
1447a84e134Smrg    XtRJustify,
1457a84e134Smrg    sizeof(XtJustify),
1467a84e134Smrg    offset(label.justify),
1477a84e134Smrg    XtRImmediate,
1487a84e134Smrg    (XtPointer)XtJustifyCenter
1497a84e134Smrg  },
1507a84e134Smrg  {
1517a84e134Smrg    XtNinternalWidth,
1527a84e134Smrg    XtCWidth,
1537a84e134Smrg    XtRDimension,
1547a84e134Smrg    sizeof(Dimension),
1557a84e134Smrg    offset(label.internal_width),
1567a84e134Smrg    XtRImmediate,
1577a84e134Smrg    (XtPointer)4
1587a84e134Smrg  },
1597a84e134Smrg  {
1607a84e134Smrg    XtNinternalHeight,
1617a84e134Smrg    XtCHeight,
1627a84e134Smrg    XtRDimension,
1637a84e134Smrg    sizeof(Dimension),
1647a84e134Smrg    offset(label.internal_height),
1657a84e134Smrg    XtRImmediate,
1667a84e134Smrg    (XtPointer)2
1677a84e134Smrg  },
1687a84e134Smrg  {
1697a84e134Smrg    XtNleftBitmap,
1707a84e134Smrg    XtCLeftBitmap,
1717a84e134Smrg    XtRBitmap,
1727a84e134Smrg    sizeof(Pixmap),
1737a84e134Smrg    offset(label.left_bitmap),
1747a84e134Smrg    XtRImmediate,
1757a84e134Smrg    (XtPointer)None
1767a84e134Smrg  },
1777a84e134Smrg  {
1787a84e134Smrg    XtNbitmap,
1797a84e134Smrg    XtCPixmap,
1807a84e134Smrg    XtRBitmap,
1817a84e134Smrg    sizeof(Pixmap),
1827a84e134Smrg    offset(label.pixmap),
1837a84e134Smrg    XtRImmediate,
1847a84e134Smrg    (XtPointer)None
1857a84e134Smrg  },
1867a84e134Smrg  {
1877a84e134Smrg    XtNresize,
1887a84e134Smrg    XtCResize,
1897a84e134Smrg    XtRBoolean,
1907a84e134Smrg    sizeof(Boolean),
1917a84e134Smrg    offset(label.resize),
1927a84e134Smrg    XtRImmediate,
1937a84e134Smrg    (XtPointer)True
1947a84e134Smrg  },
1957a84e134Smrg  {
1967a84e134Smrg    XtNlabelX,
1977a84e134Smrg    XtCPosition,
1987a84e134Smrg    XtRPosition,
1997a84e134Smrg    sizeof(Position),
2007a84e134Smrg    offset(label.label_x),
2017a84e134Smrg    XtRImmediate,
2027a84e134Smrg    (XtPointer)0
2037a84e134Smrg  },
2047a84e134Smrg  {
2057a84e134Smrg    XtNlabelY,
2067a84e134Smrg    XtCPosition,
2077a84e134Smrg    XtRPosition,
2087a84e134Smrg    sizeof(Position),
2097a84e134Smrg    offset(label.label_y),
2107a84e134Smrg    XtRImmediate,
2117a84e134Smrg    (XtPointer)0
2127a84e134Smrg  },
2137a84e134Smrg};
2147a84e134Smrg#undef offset
2157a84e134Smrg
2167a84e134Smrg#define Superclass (&simpleClassRec)
2177a84e134SmrgLabelClassRec labelClassRec = {
2187a84e134Smrg  /* core */
2197a84e134Smrg  {
2207a84e134Smrg    (WidgetClass)&simpleClassRec,	/* superclass */
2217a84e134Smrg    "Label",				/* class_name */
2227a84e134Smrg    sizeof(LabelRec),			/* widget_size */
2237a84e134Smrg    XawLabelClassInitialize,		/* class_initialize */
2247a84e134Smrg    NULL,				/* class_part_initialize */
2257a84e134Smrg    False,				/* class_inited */
2267a84e134Smrg    XawLabelInitialize,			/* initialize */
2277a84e134Smrg    NULL,				/* initialize_hook */
2287a84e134Smrg    XtInheritRealize,			/* realize */
2297a84e134Smrg    NULL,				/* actions */
2307a84e134Smrg    0,					/* num_actions */
2317a84e134Smrg    resources,				/* resources */
2327a84e134Smrg    XtNumber(resources),		/* num_resources */
2337a84e134Smrg    NULLQUARK,				/* xrm_class */
2347a84e134Smrg    True,				/* compress_motion */
2357a84e134Smrg    True,				/* compress_exposure */
2367a84e134Smrg    True,				/* compress_enterleave */
2377a84e134Smrg    False,				/* visible_interest */
2387a84e134Smrg    XawLabelDestroy,			/* destroy */
2397a84e134Smrg    XawLabelResize,			/* resize */
2407a84e134Smrg    XawLabelRedisplay,			/* expose */
2417a84e134Smrg    XawLabelSetValues,			/* set_values */
2427a84e134Smrg    NULL,				/* set_values_hook */
2437a84e134Smrg    XtInheritSetValuesAlmost,		/* set_values_almost */
2447a84e134Smrg    NULL,				/* get_values_hook */
2457a84e134Smrg    NULL,				/* accept_focus */
2467a84e134Smrg    XtVersion,				/* version */
2477a84e134Smrg    NULL,				/* callback_private */
2487a84e134Smrg    NULL,				/* tm_table */
2497a84e134Smrg    XawLabelQueryGeometry,		/* query_geometry */
2507a84e134Smrg    XtInheritDisplayAccelerator,	/* display_accelerator */
2517a84e134Smrg    NULL,				/* extension */
2527a84e134Smrg  },
2537a84e134Smrg  /* simple */
2547a84e134Smrg  {
2557a84e134Smrg    XtInheritChangeSensitive,		/* change_sensitive */
2567a84e134Smrg  },
2577a84e134Smrg  /* label */
2587a84e134Smrg  {
2597a84e134Smrg    NULL,				/* extension */
2607a84e134Smrg  }
2617a84e134Smrg};
2627a84e134Smrg
2637a84e134SmrgWidgetClass labelWidgetClass = (WidgetClass)&labelClassRec;
2647a84e134Smrg
2657a84e134Smrg/*
2667a84e134Smrg * Implementation
2677a84e134Smrg */
2687a84e134Smrgstatic void
2697a84e134SmrgXawLabelClassInitialize(void)
2707a84e134Smrg{
2717a84e134Smrg    XawInitializeWidgetSet();
2727a84e134Smrg    XtAddConverter(XtRString, XtRJustify, XmuCvtStringToJustify, NULL, 0);
2737a84e134Smrg    XtSetTypeConverter(XtRJustify, XtRString, XmuCvtJustifyToString,
2747a84e134Smrg		       NULL, 0, XtCacheNone, NULL);
2757a84e134Smrg}
2767a84e134Smrg
2777a84e134Smrg/*
2787a84e134Smrg * Calculate width and height of displayed text in pixels
2797a84e134Smrg */
2807a84e134Smrgstatic void
2817a84e134SmrgSetTextWidthAndHeight(LabelWidget lw)
2827a84e134Smrg{
2837a84e134Smrg    XFontStruct	*fs = lw->label.font;
2847a84e134Smrg    char *nl;
2857a84e134Smrg
2867a84e134Smrg    if (lw->label.pixmap != None) {
2877a84e134Smrg	Window root;
2887a84e134Smrg	int x, y;
2897a84e134Smrg	unsigned int width, height, bw, depth;
2907a84e134Smrg
2917a84e134Smrg	if (XGetGeometry(XtDisplay(lw), lw->label.pixmap, &root, &x, &y,
2927a84e134Smrg		       &width, &height, &bw, &depth)) {
2935ec34c4cSmrg	    lw->label.label_height = (Dimension)height;
2945ec34c4cSmrg	    lw->label.label_width = (Dimension)width;
2955ec34c4cSmrg	    lw->label.label_len = (Dimension)depth;
2967a84e134Smrg	    return;
2977a84e134Smrg	}
2987a84e134Smrg    }
2997a84e134Smrg    if (lw->simple.international == True) {
3007a84e134Smrg	XFontSet	fset = lw->label.fontset;
3017a84e134Smrg	XFontSetExtents *ext = XExtentsOfFontSet(fset);
3027a84e134Smrg
3037a84e134Smrg	lw->label.label_height = ext->max_ink_extent.height;
3047a84e134Smrg	if (lw->label.label == NULL) {
3057a84e134Smrg	    lw->label.label_len = 0;
3067a84e134Smrg	    lw->label.label_width = 0;
3077a84e134Smrg	}
3085b16253fSmrg	else if ((nl = strchr(lw->label.label, '\n')) != NULL) {
3097a84e134Smrg	    char *label;
3107a84e134Smrg
3117a84e134Smrg	    lw->label.label_len = MULTI_LINE_LABEL;
3127a84e134Smrg	    lw->label.label_width = 0;
3135b16253fSmrg	    for (label = lw->label.label; nl != NULL; nl = strchr(label, '\n')) {
3147a84e134Smrg		int width = XmbTextEscapement(fset, label, (int)(nl - label));
3157a84e134Smrg
3167a84e134Smrg		if (width > (int)lw->label.label_width)
3175ec34c4cSmrg		    lw->label.label_width = (Dimension)width;
3187a84e134Smrg		label = nl + 1;
3197a84e134Smrg		if (*label)
3205ec34c4cSmrg		    lw->label.label_height = (Dimension)(lw->label.label_height + ext->max_ink_extent.height);
3217a84e134Smrg	    }
3227a84e134Smrg	    if (*label) {
3235ec34c4cSmrg		int width = XmbTextEscapement(fset, label, (int)strlen(label));
3247a84e134Smrg
3257a84e134Smrg		if (width > (int)lw->label.label_width)
3265ec34c4cSmrg		    lw->label.label_width = (Dimension)width;
3277a84e134Smrg	    }
3287a84e134Smrg	}
3297a84e134Smrg	else {
3305ec34c4cSmrg	    lw->label.label_len = (Dimension)strlen(lw->label.label);
3317a84e134Smrg	    lw->label.label_width =
3325ec34c4cSmrg		(Dimension)XmbTextEscapement(fset, lw->label.label, lw->label.label_len);
3337a84e134Smrg	}
3347a84e134Smrg    }
3357a84e134Smrg    else {
3365ec34c4cSmrg	lw->label.label_height = (Dimension)(fs->max_bounds.ascent + fs->max_bounds.descent);
3377a84e134Smrg	if (lw->label.label == NULL) {
3387a84e134Smrg	    lw->label.label_len = 0;
3397a84e134Smrg	    lw->label.label_width = 0;
3407a84e134Smrg	}
3415b16253fSmrg	else if ((nl = strchr(lw->label.label, '\n')) != NULL) {
3427a84e134Smrg	    char *label;
3437a84e134Smrg
3447a84e134Smrg	    lw->label.label_len = MULTI_LINE_LABEL;
3457a84e134Smrg	    lw->label.label_width = 0;
3465b16253fSmrg	    for (label = lw->label.label; nl != NULL; nl = strchr(label, '\n')) {
3477a84e134Smrg		int width;
3487a84e134Smrg
3497a84e134Smrg		if (lw->label.encoding)
350c889a3bfSmrg		    width = XTextWidth16(fs, (XChar2b *)label, (int)(nl - label) / 2);
3517a84e134Smrg		else
3527a84e134Smrg		    width = XTextWidth(fs, label, (int)(nl - label));
3537a84e134Smrg		if (width > (int)lw->label.label_width)
3545ec34c4cSmrg		    lw->label.label_width = (Dimension)width;
3557a84e134Smrg		label = nl + 1;
3567a84e134Smrg		if (*label)
3577a84e134Smrg		    lw->label.label_height +=
3587a84e134Smrg			fs->max_bounds.ascent + fs->max_bounds.descent;
3597a84e134Smrg	    }
3607a84e134Smrg	    if (*label) {
3615ec34c4cSmrg		int width = XTextWidth(fs, label, (int)strlen(label));
3627a84e134Smrg
3637a84e134Smrg		if (lw->label.encoding)
3645ec34c4cSmrg		    width = XTextWidth16(fs, (XChar2b *)label, (int)(strlen(label) / 2));
3657a84e134Smrg		else
3665ec34c4cSmrg		    width = XTextWidth(fs, label, (int)strlen(label));
3677a84e134Smrg		if (width > (int) lw->label.label_width)
3685ec34c4cSmrg		    lw->label.label_width = (Dimension)width;
3697a84e134Smrg	    }
3707a84e134Smrg	}
3717a84e134Smrg	else {
3725ec34c4cSmrg	    lw->label.label_len = (Dimension)strlen(lw->label.label);
3737a84e134Smrg	    if (lw->label.encoding)
3747a84e134Smrg		lw->label.label_width =
3755ec34c4cSmrg		    (Dimension)XTextWidth16(fs, (XChar2b *)lw->label.label,
3767a84e134Smrg			   (int)lw->label.label_len / 2);
3777a84e134Smrg	    else
3787a84e134Smrg		lw->label.label_width =
3795ec34c4cSmrg		    (Dimension)XTextWidth(fs, lw->label.label, (int)lw->label.label_len);
3807a84e134Smrg	}
3817a84e134Smrg    }
3827a84e134Smrg}
3837a84e134Smrg
3847a84e134Smrgstatic void
3857a84e134SmrgGetNormalGC(LabelWidget lw)
3867a84e134Smrg{
3877a84e134Smrg    XGCValues	values;
3887a84e134Smrg
3897a84e134Smrg    values.foreground	= lw->label.foreground;
3907a84e134Smrg    values.background	= lw->core.background_pixel;
3917a84e134Smrg    values.font		= lw->label.font->fid;
3927a84e134Smrg    values.graphics_exposures = False;
3937a84e134Smrg
3947a84e134Smrg    if (lw->simple.international == True)
3957a84e134Smrg    /* Since Xmb/wcDrawString eats the font, I must use XtAllocateGC */
3967a84e134Smrg	lw->label.normal_GC = XtAllocateGC((Widget)lw, 0,
3977a84e134Smrg					   GCForeground | GCBackground |
3987a84e134Smrg					   GCGraphicsExposures,
3997a84e134Smrg					   &values, GCFont, 0);
4007a84e134Smrg    else
4017a84e134Smrg	lw->label.normal_GC = XtGetGC((Widget)lw,
4027a84e134Smrg				      GCForeground | GCBackground | GCFont |
4037a84e134Smrg				      GCGraphicsExposures, &values);
4047a84e134Smrg}
4057a84e134Smrg
4067a84e134Smrgstatic void
4077a84e134SmrgGetGrayGC(LabelWidget lw)
4087a84e134Smrg{
4097a84e134Smrg    XGCValues	values;
4107a84e134Smrg
4117a84e134Smrg    values.foreground = lw->label.foreground;
4127a84e134Smrg    values.background = lw->core.background_pixel;
4137a84e134Smrg    values.font	      = lw->label.font->fid;
4147a84e134Smrg    values.fill_style = FillTiled;
4157a84e134Smrg    values.tile       = XmuCreateStippledPixmap(XtScreen((Widget)lw),
416421c997bSmrg						lw->label.foreground,
4177a84e134Smrg						lw->core.background_pixel,
4187a84e134Smrg						lw->core.depth);
4197a84e134Smrg    values.graphics_exposures = False;
4207a84e134Smrg
4217a84e134Smrg    lw->label.stipple = values.tile;
4227a84e134Smrg    if (lw->simple.international == True)
4237a84e134Smrg	/* Since Xmb/wcDrawString eats the font, I must use XtAllocateGC */
4247a84e134Smrg	lw->label.gray_GC = XtAllocateGC((Widget)lw, 0,
4257a84e134Smrg					 GCForeground | GCBackground |
4267a84e134Smrg					 GCTile | GCFillStyle |
4277a84e134Smrg					 GCGraphicsExposures,
4287a84e134Smrg					 &values, GCFont, 0);
4297a84e134Smrg	else
430421c997bSmrg	    lw->label.gray_GC = XtGetGC((Widget)lw,
4317a84e134Smrg					GCForeground | GCBackground |
4327a84e134Smrg					GCFont | GCTile | GCFillStyle |
4337a84e134Smrg					GCGraphicsExposures,
4347a84e134Smrg					&values);
4357a84e134Smrg}
4367a84e134Smrg
4377a84e134Smrgstatic void
4387a84e134Smrgcompute_bitmap_offsets(LabelWidget lw)
4397a84e134Smrg{
4407a84e134Smrg    /*
441421c997bSmrg     * bitmap will be eventually be displayed at
4427a84e134Smrg     * (internal_width, internal_height + lbm_y)
4437a84e134Smrg     */
4447a84e134Smrg    if (lw->label.lbm_height != 0)
4455ec34c4cSmrg	lw->label.lbm_y = (int)((XtHeight(lw)
4465ec34c4cSmrg				- ((lw->label.internal_height * 2)
4475ec34c4cSmrg				+ lw->label.lbm_height)) / 2);
4487a84e134Smrg    else
4497a84e134Smrg	lw->label.lbm_y = 0;
4507a84e134Smrg}
4517a84e134Smrg
4527a84e134Smrgstatic void
4537a84e134Smrgset_bitmap_info(LabelWidget lw)
4547a84e134Smrg{
4557a84e134Smrg    Window root;
4567a84e134Smrg    int x, y;
4577a84e134Smrg    unsigned int bw, depth;
4587a84e134Smrg
4597a84e134Smrg    if (!(lw->label.left_bitmap
4607a84e134Smrg	&& XGetGeometry(XtDisplay(lw), lw->label.left_bitmap, &root, &x, &y,
4617a84e134Smrg			&lw->label.lbm_width, &lw->label.lbm_height,
4627a84e134Smrg			&bw, &depth)))
4637a84e134Smrg	lw->label.lbm_width = lw->label.lbm_height = 0;
4647a84e134Smrg
4657a84e134Smrg    compute_bitmap_offsets(lw);
4667a84e134Smrg}
4677a84e134Smrg
4687a84e134Smrg/*ARGSUSED*/
4697a84e134Smrgstatic void
4705ec34c4cSmrgXawLabelInitialize(Widget request _X_UNUSED, Widget cnew,
4715ec34c4cSmrg		   ArgList args _X_UNUSED, Cardinal *num_args _X_UNUSED)
4727a84e134Smrg{
4737a84e134Smrg    LabelWidget lw = (LabelWidget)cnew;
4747a84e134Smrg
4757a84e134Smrg    if (!lw->label.font) XtError("Aborting: no font found\n");
476421c997bSmrg    if (lw->simple.international && !lw->label.fontset)
4777a84e134Smrg	XtError("Aborting: no fontset found\n");
478421c997bSmrg
479421c997bSmrg    if (lw->label.label == NULL)
4807a84e134Smrg	lw->label.label = XtNewString(lw->core.name);
4817a84e134Smrg    else
4827a84e134Smrg	lw->label.label = XtNewString(lw->label.label);
4837a84e134Smrg
4847a84e134Smrg    GetNormalGC(lw);
4857a84e134Smrg    GetGrayGC(lw);
4867a84e134Smrg
4877a84e134Smrg    SetTextWidthAndHeight(lw);
4887a84e134Smrg
4897a84e134Smrg    if (XtHeight(lw) == 0)
4905ec34c4cSmrg	XtHeight(lw) = (Dimension)(lw->label.label_height + 2 * lw->label.internal_height);
4917a84e134Smrg
4927a84e134Smrg    set_bitmap_info(lw);		/* need core.height */
4937a84e134Smrg
4947a84e134Smrg    if (XtWidth(lw) == 0)		/* need label.lbm_width */
4955ec34c4cSmrg	XtWidth(lw) = (lw->label.label_width
4965ec34c4cSmrg		       + (2 * lw->label.internal_width)
4975ec34c4cSmrg		       + LEFT_OFFSET(lw));
4987a84e134Smrg
4997a84e134Smrg    lw->label.label_x = lw->label.label_y = 0;
5007a84e134Smrg    (*XtClass(cnew)->core_class.resize)((Widget)lw);
5017a84e134Smrg}
5027a84e134Smrg
5037a84e134Smrg/*ARGSUSED*/
5047a84e134Smrgstatic void
5057a84e134SmrgXawLabelRedisplay(Widget gw, XEvent *event, Region region)
5067a84e134Smrg{
5077a84e134Smrg    LabelWidget w = (LabelWidget)gw;
5087a84e134Smrg    GC gc;
5097a84e134Smrg
5107a84e134Smrg    if (*Superclass->core_class.expose != NULL)
5117a84e134Smrg	(*Superclass->core_class.expose)(gw, event, region);
5127a84e134Smrg
5137a84e134Smrg    gc = XtIsSensitive(gw) ? w->label.normal_GC : w->label.gray_GC;
5147a84e134Smrg#ifdef notdef
5157a84e134Smrg    if (region != NULL)
5167a84e134Smrg	XSetRegion(XtDisplay(gw), gc, region);
5177a84e134Smrg#endif /*notdef*/
5187a84e134Smrg
5197a84e134Smrg    if (w->label.pixmap == None) {
5207a84e134Smrg	int len = w->label.label_len;
5217a84e134Smrg	char *label = w->label.label;
5225ec34c4cSmrg	Position y = (Position)(w->label.label_y + w->label.font->max_bounds.ascent);
5237a84e134Smrg	Position ksy = w->label.label_y;
5247a84e134Smrg
5257a84e134Smrg	/* display left bitmap */
5267a84e134Smrg	if (w->label.left_bitmap && w->label.lbm_width != 0)
5277a84e134Smrg	    XCopyPlane (XtDisplay(gw), w->label.left_bitmap, XtWindow(gw), gc,
5287a84e134Smrg			0, 0, w->label.lbm_width, w->label.lbm_height,
5297a84e134Smrg			w->label.internal_width,
5307a84e134Smrg			w->label.internal_height + w->label.lbm_y, 1L);
5317a84e134Smrg
5327a84e134Smrg	if (w->simple.international == True) {
5337a84e134Smrg	    XFontSetExtents *ext = XExtentsOfFontSet(w->label.fontset);
5347a84e134Smrg
5355ec34c4cSmrg	    ksy = (ksy + XawAbs(ext->max_ink_extent.y));
5367a84e134Smrg
5377a84e134Smrg	    if (len == MULTI_LINE_LABEL) {
5387a84e134Smrg		char *nl;
5397a84e134Smrg
5405b16253fSmrg		while ((nl = strchr(label, '\n')) != NULL) {
5417a84e134Smrg		    XmbDrawString(XtDisplay(w), XtWindow(w), w->label.fontset,
5427a84e134Smrg				  gc, w->label.label_x, ksy, label,
5437a84e134Smrg				  (int)(nl - label));
5445ec34c4cSmrg		    ksy = (ksy + ext->max_ink_extent.height);
5457a84e134Smrg		    label = nl + 1;
5467a84e134Smrg		}
5475ec34c4cSmrg		len = (int)strlen(label);
5487a84e134Smrg	    }
5497a84e134Smrg	    if (len)
5507a84e134Smrg		XmbDrawString(XtDisplay(w), XtWindow(w), w->label.fontset, gc,
5517a84e134Smrg			      w->label.label_x, ksy, label, len);
5527a84e134Smrg	}
5537a84e134Smrg	else {
5547a84e134Smrg	    if (len == MULTI_LINE_LABEL) {
5557a84e134Smrg		char *nl;
5567a84e134Smrg
5575b16253fSmrg		while ((nl = strchr(label, '\n')) != NULL) {
5587a84e134Smrg		    if (w->label.encoding)
5597a84e134Smrg			XDrawString16(XtDisplay(gw), XtWindow(gw), gc,
5607a84e134Smrg				      w->label.label_x, y,
561c889a3bfSmrg				      (XChar2b *)label, (int)(nl - label) / 2);
5627a84e134Smrg		    else
5637a84e134Smrg			XDrawString(XtDisplay(gw), XtWindow(gw), gc,
5647a84e134Smrg				    w->label.label_x, y, label, (int)(nl - label));
5655ec34c4cSmrg		    y += (w->label.font->max_bounds.ascent +
5665ec34c4cSmrg			 w->label.font->max_bounds.descent);
5677a84e134Smrg		    label = nl + 1;
5687a84e134Smrg		}
5695ec34c4cSmrg		len = (int)strlen(label);
5707a84e134Smrg	    }
5717a84e134Smrg	    if (len) {
5727a84e134Smrg		if (w->label.encoding)
5737a84e134Smrg		    XDrawString16(XtDisplay(gw), XtWindow(gw), gc,
574c889a3bfSmrg				  w->label.label_x, y, (XChar2b *)label, len / 2);
5757a84e134Smrg		else
5767a84e134Smrg		    XDrawString(XtDisplay(gw), XtWindow(gw), gc,
5777a84e134Smrg				w->label.label_x, y, label, len);
5787a84e134Smrg	    }
5797a84e134Smrg	}
5807a84e134Smrg    }
5817a84e134Smrg    else if (w->label.label_len == 1)
5827a84e134Smrg	XCopyPlane(XtDisplay(gw), w->label.pixmap, XtWindow(gw), gc,
5837a84e134Smrg		   0, 0, w->label.label_width, w->label.label_height,
5847a84e134Smrg		   w->label.label_x, w->label.label_y, 1L);
5857a84e134Smrg    else
5867a84e134Smrg	XCopyArea(XtDisplay(gw), w->label.pixmap, XtWindow(gw), gc,
5877a84e134Smrg		  0, 0, w->label.label_width, w->label.label_height,
5887a84e134Smrg		  w->label.label_x, w->label.label_y);
5897a84e134Smrg
5907a84e134Smrg#ifdef notdef
5917a84e134Smrg    if (region != NULL)
5927a84e134Smrg	XSetClipMask(XtDisplay(gw), gc, (Pixmap)None);
5937a84e134Smrg#endif /* notdef */
5947a84e134Smrg}
5957a84e134Smrg
5967a84e134Smrgstatic void
5977a84e134Smrg_Reposition(LabelWidget lw, unsigned int width, unsigned int height,
5987a84e134Smrg	    Position *dx, Position *dy)
5997a84e134Smrg{
6007a84e134Smrg    Position newPos;
6015ec34c4cSmrg    Position leftedge = (lw->label.internal_width + LEFT_OFFSET(lw));
6027a84e134Smrg
6037a84e134Smrg    switch (lw->label.justify) {
6047a84e134Smrg	case XtJustifyLeft:
6057a84e134Smrg	    newPos = leftedge;
6067a84e134Smrg	    break;
6077a84e134Smrg	case XtJustifyRight:
6085ec34c4cSmrg	    newPos = (Position)(width - (unsigned)(lw->label.label_width + lw->label.internal_width));
6097a84e134Smrg	    break;
6107a84e134Smrg	case XtJustifyCenter:
6117a84e134Smrg        /*FALLTRHOUGH*/
6127a84e134Smrg	default:
6135ec34c4cSmrg	    newPos = (Position)((int)(width - lw->label.label_width) >> 1);
6147a84e134Smrg	    break;
6157a84e134Smrg    }
6167a84e134Smrg    if (newPos < (Position)leftedge)
6177a84e134Smrg	newPos = leftedge;
6185ec34c4cSmrg    *dx = (Position)(newPos - lw->label.label_x);
6197a84e134Smrg    lw->label.label_x = newPos;
6207a84e134Smrg
6215ec34c4cSmrg    newPos = (Position)((height - lw->label.label_height) >> 1);
6225ec34c4cSmrg    *dy = (Position)(newPos - lw->label.label_y);
6237a84e134Smrg    lw->label.label_y = newPos;
6247a84e134Smrg}
6257a84e134Smrg
6267a84e134Smrgstatic void
6277a84e134SmrgXawLabelResize(Widget w)
6287a84e134Smrg{
6297a84e134Smrg    LabelWidget lw = (LabelWidget)w;
6307a84e134Smrg    Position dx, dy;
6317a84e134Smrg
6327a84e134Smrg    _Reposition(lw, XtWidth(w), XtHeight(w), &dx, &dy);
6337a84e134Smrg    compute_bitmap_offsets(lw);
6347a84e134Smrg}
6357a84e134Smrg
6367a84e134Smrg#define PIXMAP 0
6377a84e134Smrg#define WIDTH 1
6387a84e134Smrg#define HEIGHT 2
6397a84e134Smrg#define NUM_CHECKS 3
6407a84e134Smrgstatic Boolean
6417a84e134SmrgXawLabelSetValues(Widget current, Widget request, Widget cnew,
6427a84e134Smrg		  ArgList args, Cardinal *num_args)
6437a84e134Smrg{
6447a84e134Smrg    LabelWidget curlw = (LabelWidget)current;
6457a84e134Smrg    LabelWidget reqlw = (LabelWidget)request;
6467a84e134Smrg    LabelWidget newlw = (LabelWidget)cnew;
6477a84e134Smrg    unsigned int i;
6487a84e134Smrg    Boolean was_resized = False, redisplay = False, checks[NUM_CHECKS];
6497a84e134Smrg
6507a84e134Smrg    for (i = 0; i < NUM_CHECKS; i++)
6517a84e134Smrg	checks[i] = False;
6527a84e134Smrg
6537a84e134Smrg    for (i = 0; i < *num_args; i++) {
6547a84e134Smrg	if (streq(XtNbitmap, args[i].name))
6557a84e134Smrg	    checks[PIXMAP] = True;
6567a84e134Smrg	else if (streq(XtNwidth, args[i].name))
6577a84e134Smrg	    checks[WIDTH] = True;
6587a84e134Smrg	else if (streq(XtNheight, args[i].name))
6597a84e134Smrg	    checks[HEIGHT] = True;
6607a84e134Smrg    }
6617a84e134Smrg
6627a84e134Smrg    if (newlw->label.label == NULL)
6635ec34c4cSmrg	newlw->label.label = (char *)newlw->core.name;
6647a84e134Smrg
6657a84e134Smrg    /*
6667a84e134Smrg     * resize on bitmap change
6677a84e134Smrg     */
6687a84e134Smrg    if (curlw->label.left_bitmap != newlw->label.left_bitmap)
6697a84e134Smrg	was_resized = True;
6707a84e134Smrg
6717a84e134Smrg    if (curlw->label.encoding != newlw->label.encoding)
6727a84e134Smrg	was_resized = True;
6737a84e134Smrg
674421c997bSmrg    if (curlw->simple.international
6757a84e134Smrg	&& curlw->label.fontset != newlw->label.fontset)
6767a84e134Smrg	was_resized = True;
6777a84e134Smrg
6787a84e134Smrg    if (curlw->label.label != newlw->label.label) {
6797a84e134Smrg	if (curlw->label.label != curlw->core.name)
6807a84e134Smrg	    XtFree((char *)curlw->label.label);
6817a84e134Smrg
6827a84e134Smrg	if (newlw->label.label != newlw->core.name)
6837a84e134Smrg	    newlw->label.label = XtNewString(newlw->label.label);
6847a84e134Smrg
6857a84e134Smrg	was_resized = True;
6867a84e134Smrg    }
6877a84e134Smrg
6887a84e134Smrg    if (was_resized || (curlw->label.font != newlw->label.font) ||
6897a84e134Smrg        curlw->label.justify != newlw->label.justify || checks[PIXMAP]) {
6907a84e134Smrg	SetTextWidthAndHeight(newlw);
6917a84e134Smrg	was_resized = True;
6927a84e134Smrg    }
6937a84e134Smrg
6947a84e134Smrg    /* recalculate the window size if something has changed */
6957a84e134Smrg    if (newlw->label.resize && was_resized) {
6967a84e134Smrg	if (XtHeight(curlw) == XtHeight(reqlw) && !checks[HEIGHT])
6975ec34c4cSmrg	    XtHeight(newlw) = (Dimension)(newlw->label.label_height +
6985ec34c4cSmrg			      (newlw->label.internal_height << 1));
6997a84e134Smrg
7007a84e134Smrg	set_bitmap_info(newlw);
7017a84e134Smrg
7027a84e134Smrg	if (XtWidth(curlw) == XtWidth(reqlw) && !checks[WIDTH])
7035ec34c4cSmrg	    XtWidth(newlw) = (newlw->label.label_width
7045ec34c4cSmrg			      + LEFT_OFFSET(newlw)
7055ec34c4cSmrg			      + (unsigned)(newlw->label.internal_width << 1));
7067a84e134Smrg    }
7077a84e134Smrg
7087a84e134Smrg    if (curlw->label.foreground		!= newlw->label.foreground
7097a84e134Smrg	|| curlw->core.background_pixel != newlw->core.background_pixel
7107a84e134Smrg	|| curlw->label.font->fid	!= newlw->label.font->fid) {
7117a84e134Smrg	/* The Fontset is not in the GC - don't make a new GC if FS changes! */
7127a84e134Smrg	XtReleaseGC(cnew, curlw->label.normal_GC);
7137a84e134Smrg	XtReleaseGC(cnew, curlw->label.gray_GC);
7147a84e134Smrg	XmuReleaseStippledPixmap(XtScreen(current), curlw->label.stipple);
7157a84e134Smrg	GetNormalGC(newlw);
7167a84e134Smrg	GetGrayGC(newlw);
7177a84e134Smrg	redisplay = True;
7187a84e134Smrg    }
7197a84e134Smrg
7207a84e134Smrg    if (curlw->label.label_x != newlw->label.label_x ||
7217a84e134Smrg        curlw->label.label_y != newlw->label.label_y)
7227a84e134Smrg	redisplay = True;
7237a84e134Smrg
7247a84e134Smrg    if (curlw->label.internal_width != newlw->label.internal_width
7257a84e134Smrg	|| curlw->label.internal_height != newlw->label.internal_height
7267a84e134Smrg	|| was_resized) {
7277a84e134Smrg	/* Resize() will be called if geometry changes succeed */
7287a84e134Smrg	Position dx, dy;
7297a84e134Smrg
7307a84e134Smrg	_Reposition(newlw, XtWidth(curlw), XtHeight(curlw), &dx, &dy);
7317a84e134Smrg    }
7327a84e134Smrg
7337a84e134Smrg      return (was_resized || redisplay ||
7347a84e134Smrg	      XtIsSensitive(current) != XtIsSensitive(cnew));
7357a84e134Smrg}
7367a84e134Smrg
7377a84e134Smrgstatic void
7387a84e134SmrgXawLabelDestroy(Widget w)
7397a84e134Smrg{
7407a84e134Smrg    LabelWidget lw = (LabelWidget)w;
7417a84e134Smrg
7427a84e134Smrg    if (lw->label.label != lw->core.name)
7437a84e134Smrg	XtFree(lw->label.label);
7447a84e134Smrg    XtReleaseGC(w, lw->label.normal_GC);
7457a84e134Smrg    XtReleaseGC(w, lw->label.gray_GC);
7467a84e134Smrg    XmuReleaseStippledPixmap(XtScreen(w), lw->label.stipple);
7477a84e134Smrg}
7487a84e134Smrg
7497a84e134Smrgstatic XtGeometryResult
7507a84e134SmrgXawLabelQueryGeometry(Widget w, XtWidgetGeometry *intended,
7517a84e134Smrg		      XtWidgetGeometry *preferred)
7527a84e134Smrg{
7537a84e134Smrg    LabelWidget lw = (LabelWidget)w;
7547a84e134Smrg
7557a84e134Smrg    preferred->request_mode = CWWidth | CWHeight;
7565ec34c4cSmrg    preferred->width = (lw->label.label_width
7575ec34c4cSmrg                        + (unsigned)(lw->label.internal_width << 1)
7585ec34c4cSmrg                        + LEFT_OFFSET(lw));
7595ec34c4cSmrg    preferred->height = (Dimension)(lw->label.label_height +
7605ec34c4cSmrg			(lw->label.internal_height << 1));
7617a84e134Smrg
7627a84e134Smrg    if (((intended->request_mode & (CWWidth | CWHeight)) == (CWWidth | CWHeight))
7637a84e134Smrg	&& intended->width == preferred->width
7647a84e134Smrg	&& intended->height == preferred->height)
7657a84e134Smrg	return (XtGeometryYes);
7667a84e134Smrg      else if (preferred->width == XtWidth(w) && preferred->height == XtHeight(w))
7677a84e134Smrg	return (XtGeometryNo);
7687a84e134Smrg
7697a84e134Smrg    return (XtGeometryAlmost);
7707a84e134Smrg}
771