JSize
JXFontManager::GetCharWidth
(
const JFontID fontID,
const JSize size,
const JFontStyle& style,
const JCharacter c
)
const
{
const FontInfo info = itsFontList->GetElement(fontID);
if (info.monoWidth > 0)
{
return info.monoWidth;
}
else if (info.xfont.type == kStdType)
{
return XTextWidth(info.xfont.xfstd, &c, 1);
}
else
{
assert( info.xfont.type == kTrueType );
XGlyphInfo g;
XftTextExtents8(*itsDisplay, info.xfont.xftrue, (FcChar8*) &c, 1, &g);
return g.xOff;
}
}
// outer code may need line height, width, etc
void textbox_extents(textbox *tb)
{
int length = strlen(tb->text) + strlen(tb->prompt);
char *line = alloca(length + 1);
sprintf(line, "%s%s", tb->prompt, tb->text);
XftTextExtents8(display, tb->font, (unsigned char*)line, length, &tb->extents);
}
int FontX11::get_string_width(const String& p_string) const {
if (!font)
return 0;
XGlyphInfo ginfo;
// this will dissapear at compile time
switch(sizeof(String::CharType)) {
case 1: { // ascii?
XftTextExtents8( x11_display, font, (FcChar8*)p_string.c_str(), p_string.length(), &ginfo );
} break;
case 2: { // ucs16
XftTextExtents16( x11_display, font, (FcChar16*)p_string.c_str(), p_string.length(), &ginfo );
} break;
case 4: { // ucs32
XftTextExtents32( x11_display, font, (FcChar32*)p_string.c_str(), p_string.length(), &ginfo );
} break;
}
return ginfo.width;
}
void
xwindow_draw_string_xft(XWindow *xw, char *text, int x, int y) {
int n;
XftDraw *draw;
XftColor color;
XRenderColor rc;
XftFont *font;
XGlyphInfo extents;
float shift[] = { 0.0, 0.0, -0.5, -1.0 };
n = strlen(text);
font = xw->font->font_xft;
if(!font) {
return;
}
draw = XftDrawCreate(DISPLAY(xw),
xw->buffer,
VISUAL(xw),
DefaultColormap(DISPLAY(xw), SCREEN(xw)));
/* Set Text from current Color */
rc.red = xw->color->red;
rc.green = xw->color->green;
rc.blue = xw->color->blue;
rc.alpha = 0xFFFF; /* 65535 */
XftColorAllocValue(DISPLAY(xw),
VISUAL(xw),
DefaultColormap(DISPLAY(xw), SCREEN(xw)),
&rc,
&color);
XftTextExtents8(DISPLAY(xw), font, (FcChar8*)text, n, &extents);
if(cmgdm.tangle != 0.0) {
XftMatrix m;
m.xx = 0.0;
m.xy = -1.0;
m.yx = 1.0;
m.yy = 0.0;
y = y - shift[cmgdm.ihjust] * extents.xOff;
x = x - shift[cmgdm.ivjust] * (font->ascent + font->descent);
font = XftFontOpen(DISPLAY(xw),
SCREEN(xw),
XFT_FAMILY, XftTypeString, xw->font->family,
XFT_SIZE, XftTypeDouble, xw->font->size,
XFT_STYLE, XftTypeString, xfont_style(xw->font),
XFT_ANTIALIAS, XftTypeBool, xw->font->antialias,
XFT_MATRIX, XftTypeMatrix, &m,
NULL);
} else {
x = x + shift[cmgdm.ihjust] * extents.xOff;
y = y - shift[cmgdm.ivjust] * (font->ascent + font->descent);
}
XftDrawString8(draw, &color, font, x, y, (FcChar8 *)text, n);
}
static int
charWidth (DviWidget dw, XftFont *font, char c)
{
XGlyphInfo extents;
XftTextExtents8 (XtDisplay (dw), font,
(unsigned char *) &c, 1, &extents);
return extents.xOff;
}
static int ui_info_font_normal_char_width()
{
XftChar8 ch = 'a';
XGlyphInfo extents;
XftTextExtents8(ui_display, ui_infofont, &ch, 1, &extents);
return extents.width;
}
/* draw text in a given color at a given (x,y) */
int
render_text(XftColor *c, int x, int y, const char *str)
{
XGlyphInfo extents;
XftTextExtents8( XINFO.disp, XINFO.font, (XftChar8 *)str, strlen(str), &extents );
XftDrawString8(XINFO.xftdraw, c, XINFO.font, x, y, (XftChar8 *)str, strlen(str));
return extents.width;
}
inline JCoordinate
JXFontManager::IsMonospace
(
const XFont& xfont
)
const
{
if (xfont.type == kStdType)
{
return (xfont.xfstd->min_bounds.width == xfont.xfstd->max_bounds.width ?
xfont.xfstd->min_bounds.width : 0);
}
else
{
assert( xfont.type == kTrueType );
XGlyphInfo g1, g2;
XftTextExtents8(*itsDisplay, xfont.xftrue, (FcChar8*) "M", 1, &g1);
XftTextExtents8(*itsDisplay, xfont.xftrue, (FcChar8*) "|", 1, &g2);
return (g1.xOff == g2.xOff ? g1.xOff : 0);
}
}
void neo_draw_pen_draw_text(NeoDrawHandle *handle, NeoDrawPen *pen,NeoDrawWindow *win, int x, int y, char *text)
{
if(!handle || !pen || !win)
return;
int len = strlen(text);
XGlyphInfo inf;
XftTextExtents8(handle->display, pen->xft_font, (XftChar8 *) text, len, &inf);
int height = inf.y;
int width = inf.x;
XftDrawString8(pen->xft_draw, &pen->xft_color, pen->xft_font, x + width, y +height, (XftChar8 *)text, len);
}
int
rp_text_width (rp_screen *s, XFontSet font, char *string, int count)
{
if (count < 0)
count = strlen (string);
#ifdef USE_XFT_FONT
if (s->xft_font)
{
XGlyphInfo extents;
XftTextExtents8 (dpy, s->xft_font, (FcChar8*) string, count, &extents);
return extents.xOff;
}
else
#endif
return XmbTextEscapement (font, string, count);
}
void
draw_text(char **message, XftColor *color)
{
int len;
int i, x, y;
XGlyphInfo extents;
i = 0;
y = height / 3;
while (message[i] != NULL) {
len = strlen(message[i]);
XftTextExtents8(display, font, message[i], len, &extents);
x = (width - extents.width)/2;
XftDrawString8(draw, color, font, x, y, message[i], len);
y += extents.height * 1.5;
i++;
}
}
JSize
JXFontManager::GetStringWidth
(
const JFontID fontID,
const JSize size,
const JFontStyle& style,
const JCharacter* str,
const JSize charCount
)
const
{
const FontInfo info = itsFontList->GetElement(fontID);
if (info.monoWidth > 0)
{
return charCount * info.monoWidth;
}
else
{
const JSize maxStringLength = itsDisplay->GetMaxStringLength();
JSize width = 0;
JSize offset = 0;
XGlyphInfo g;
while (offset < charCount)
{
const JSize count = JMin(charCount - offset, maxStringLength);
if (info.xfont.type == kStdType)
{
width += XTextWidth(info.xfont.xfstd, str + offset, count);
}
else
{
assert( info.xfont.type == kTrueType );
XftTextExtents8(*itsDisplay, info.xfont.xftrue, (FcChar8*) (str + offset), count, &g);
width += g.xOff;
}
offset += count;
}
return width;
}
}
uint defont_get_text_width(DEFont *font, const char *text, uint len)
{
#ifdef HAVE_X11_XFT
if(font->font!=NULL){
XGlyphInfo extents;
if(ioncore_g.enc_utf8)
XftTextExtentsUtf8(ioncore_g.dpy, font->font, (XftChar8*)text, len, &extents);
else
XftTextExtents8(ioncore_g.dpy, font->font, (XftChar8*)text, len, &extents);
return extents.xOff;
}
#endif /* HAVE_X11_XFT */
#ifdef HAVE_X11_BMF
if(font->fontset!=NULL){
XRectangle lext;
#ifdef CF_DE_USE_XUTF8
if(ioncore_g.enc_utf8)
Xutf8TextExtents(font->fontset, text, len, NULL, &lext);
else
#endif
XmbTextExtents(font->fontset, text, len, NULL, &lext);
return lext.width;
}else if(font->fontstruct!=NULL){
if(ioncore_g.enc_utf8){
XChar2b *str16; int len16=0;
uint res;
toucs(text, len, &str16, &len16);
res=XTextWidth16(font->fontstruct, str16, len16);
free(str16);
return res;
}else{
return XTextWidth(font->fontstruct, text, len);
}
}
#endif /* HAVE_X11_BMF */
else{
return 0;
}
}
JSize
JXFontManager::GetLineHeight
(
const JFontID fontID,
const JSize size,
const JFontStyle& style,
JCoordinate* ascent,
JCoordinate* descent
)
const
{
FontInfo info = itsFontList->GetElement(fontID);
if (info.xfont.type == kStdType)
{
*ascent = info.xfont.xfstd->ascent;
*descent = info.xfont.xfstd->descent;
}
else
{
assert( info.xfont.type == kTrueType );
if (info.ascent == 0)
{
XGlyphInfo g;
XftTextExtents8(*itsDisplay, info.xfont.xftrue, (FcChar8*) "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789|_", 64, &g);
info.ascent = g.y + 1 + size/10;
info.descent = g.height - g.y;
itsFontList->SetElement(fontID, info);
}
*ascent = info.ascent;
*descent = info.descent;
}
const JCoordinate underlineHeight = 2 * GetUnderlineThickness(size) * style.underlineCount;
if (*descent < underlineHeight)
{
*descent = underlineHeight;
}
return (*ascent + *descent);
}
int
WMWidthOfString(WMFont *font, char *text, int length)
{
XGlyphInfo extents;
wassertrv(font!=NULL, 0);
wassertrv(text!=NULL, 0);
if (font->screen->useWideChar) {
wchar_t *wtext;
const char *mtext;
int len;
wtext = (wchar_t *)wmalloc(sizeof(wchar_t)*(length+1));
mtext = text;
len = wmbsnrtowcs(wtext, &mtext, length, length);
if (len>0) {
wtext[len] = L'\0'; /* not really necessary here */
XftTextExtents32(font->screen->display, font->font,
(XftChar32 *)wtext, len, &extents);
} else {
if (len==-1) {
wwarning(_("Conversion to widechar failed (possible "
"invalid multibyte sequence): '%s':(pos %d)\n"),
text, mtext-text+1);
}
extents.xOff = 0;
}
wfree(wtext);
} else if (font->screen->useMultiByte) {
XftTextExtentsUtf8(font->screen->display, font->font,
(XftChar8 *)text, length, &extents);
} else {
XftTextExtents8(font->screen->display, font->font,
(XftChar8 *)text, length, &extents);
}
return extents.xOff; /* don't ask :P */
}
void
tooltip_map(Tooltip *tt, int x, int y, const FcChar8 *text, int len)
{
XUnmapWindow(tt->mainwin->dpy, tt->window);
XftTextExtents8(tt->mainwin->dpy, tt->font, text, len, &tt->extents);
tt->width = tt->extents.width + 8;
tt->height = tt->font_height + 5 + (tt->shadow.pixel ? 2 : 0);
XResizeWindow(tt->mainwin->dpy, tt->window, tt->width, tt->height);
tooltip_move(tt, x, y);
if(tt->text)
free(tt->text);
tt->text = (FcChar8 *)malloc(len);
memcpy(tt->text, text, len);
tt->text_len = len;
XMapWindow(tt->mainwin->dpy, tt->window);
XRaiseWindow(tt->mainwin->dpy, tt->window);
}
static void ui_draw_tag_value(const char* tag, const char* value, XftFont* font,
int x, int y, int maxwidth, int* width)
{
int accx = x;
int tagwidth = 0;
ui_draw_string(tag, font, &ui_infocolortag, accx, y, maxwidth, &tagwidth);
accx += tagwidth;
XGlyphInfo extents;
XftTextExtents8(ui_display, font, (XftChar8*) "x", 1, &extents);
accx += extents.width;
int valuewidth = 0;
ui_draw_string(value, font, &ui_infocolor, accx, y, maxwidth - (accx - x), &valuewidth);
accx += valuewidth;
if (NULL != width) {
*width = accx - x;
}
}
static void debrush_do_draw_string_default_xft(
DEBrush *brush,
int x, int y, const char *str,
int len, bool needfill,
DEColourGroup *colours)
{
Window win = brush->win;
GC gc=brush->d->normal_gc;
XftDraw *draw;
XftFont *font;
if(brush->d->font==NULL)
return;
font=brush->d->font->font;
draw=debrush_get_draw(brush, win);
if(needfill){
XGlyphInfo extents;
if(ioncore_g.enc_utf8){
XftTextExtentsUtf8(ioncore_g.dpy, font, (XftChar8*)str, len,
&extents);
}else{
XftTextExtents8(ioncore_g.dpy, font, (XftChar8*)str, len, &extents);
}
XftDrawRect(draw, &(colours->bg), x-extents.x, y-extents.y,
extents.width+10, extents.height);
}
if(ioncore_g.enc_utf8){
XftDrawStringUtf8(draw, &(colours->fg), font, x, y, (XftChar8*)str,
len);
}else{
XftDrawString8(draw, &(colours->fg), font, x, y, (XftChar8*)str, len);
}
}
static Lisp_Object
xftfont_open (struct frame *f, Lisp_Object entity, int pixel_size)
{
FcResult result;
Display *display = FRAME_X_DISPLAY (f);
Lisp_Object val, filename, idx, font_object;
FcPattern *pat = NULL, *match;
struct xftfont_info *xftfont_info = NULL;
struct font *font;
double size = 0;
XftFont *xftfont = NULL;
int spacing;
char name[256];
int len, i;
XGlyphInfo extents;
FT_Face ft_face;
FcMatrix *matrix;
val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX));
if (! CONSP (val))
return Qnil;
val = XCDR (val);
filename = XCAR (val);
idx = XCDR (val);
size = XINT (AREF (entity, FONT_SIZE_INDEX));
if (size == 0)
size = pixel_size;
pat = FcPatternCreate ();
FcPatternAddInteger (pat, FC_WEIGHT, FONT_WEIGHT_NUMERIC (entity));
i = FONT_SLANT_NUMERIC (entity) - 100;
if (i < 0) i = 0;
FcPatternAddInteger (pat, FC_SLANT, i);
FcPatternAddInteger (pat, FC_WIDTH, FONT_WIDTH_NUMERIC (entity));
FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size);
val = AREF (entity, FONT_FAMILY_INDEX);
if (! NILP (val))
FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val)));
val = AREF (entity, FONT_FOUNDRY_INDEX);
if (! NILP (val))
FcPatternAddString (pat, FC_FOUNDRY, (FcChar8 *) SDATA (SYMBOL_NAME (val)));
val = AREF (entity, FONT_SPACING_INDEX);
if (! NILP (val))
FcPatternAddInteger (pat, FC_SPACING, XINT (val));
val = AREF (entity, FONT_DPI_INDEX);
if (! NILP (val))
{
double dbl = XINT (val);
FcPatternAddDouble (pat, FC_DPI, dbl);
}
val = AREF (entity, FONT_AVGWIDTH_INDEX);
if (INTEGERP (val) && XINT (val) == 0)
FcPatternAddBool (pat, FC_SCALABLE, FcTrue);
/* This is necessary to identify the exact font (e.g. 10x20.pcf.gz
over 10x20-ISO8859-1.pcf.gz). */
FcPatternAddCharSet (pat, FC_CHARSET, ftfont_get_fc_charset (entity));
xftfont_add_rendering_parameters (pat, entity);
FcPatternAddString (pat, FC_FILE, (FcChar8 *) SDATA (filename));
FcPatternAddInteger (pat, FC_INDEX, XINT (idx));
block_input ();
/* Make sure that the Xrender extension is added before the Xft one.
Otherwise, the close-display hook set by Xft is called after the
one for Xrender, and the former tries to re-add the latter. This
results in inconsistency of internal states and leads to X
protocol error when one reconnects to the same X server.
(Bug#1696) */
{
int event_base, error_base;
XRenderQueryExtension (display, &event_base, &error_base);
}
/* Substitute in values from X resources and XftDefaultSet. */
XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat);
match = XftFontMatch (display, FRAME_X_SCREEN_NUMBER (f), pat, &result);
xftfont_fix_match (pat, match);
FcPatternDestroy (pat);
xftfont = XftFontOpenPattern (display, match);
if (!xftfont)
{
unblock_input ();
XftPatternDestroy (match);
return Qnil;
}
ft_face = XftLockFace (xftfont);
unblock_input ();
/* We should not destroy PAT here because it is kept in XFTFONT and
destroyed automatically when XFTFONT is closed. */
font_object = font_make_object (VECSIZE (struct xftfont_info), entity, size);
ASET (font_object, FONT_TYPE_INDEX, Qxft);
len = font_unparse_xlfd (entity, size, name, 256);
if (len > 0)
ASET (font_object, FONT_NAME_INDEX, make_string (name, len));
len = font_unparse_fcname (entity, size, name, 256);
if (len > 0)
ASET (font_object, FONT_FULLNAME_INDEX, make_string (name, len));
else
ASET (font_object, FONT_FULLNAME_INDEX,
AREF (font_object, FONT_NAME_INDEX));
ASET (font_object, FONT_FILE_INDEX, filename);
ASET (font_object, FONT_FORMAT_INDEX,
ftfont_font_format (xftfont->pattern, filename));
font = XFONT_OBJECT (font_object);
font->pixel_size = size;
font->driver = &xftfont_driver;
font->encoding_charset = font->repertory_charset = -1;
xftfont_info = (struct xftfont_info *) font;
xftfont_info->display = display;
xftfont_info->xftfont = xftfont;
/* This means that there's no need of transformation. */
xftfont_info->matrix.xx = 0;
if (FcPatternGetMatrix (xftfont->pattern, FC_MATRIX, 0, &matrix)
== FcResultMatch)
{
xftfont_info->matrix.xx = 0x10000L * matrix->xx;
xftfont_info->matrix.yy = 0x10000L * matrix->yy;
xftfont_info->matrix.xy = 0x10000L * matrix->xy;
xftfont_info->matrix.yx = 0x10000L * matrix->yx;
}
if (INTEGERP (AREF (entity, FONT_SPACING_INDEX)))
spacing = XINT (AREF (entity, FONT_SPACING_INDEX));
else
spacing = FC_PROPORTIONAL;
if (! ascii_printable[0])
{
int ch;
for (ch = 0; ch < 95; ch++)
ascii_printable[ch] = ' ' + ch;
}
block_input ();
/* Unfortunately Xft doesn't provide a way to get minimum char
width. So, we set min_width to space_width. */
if (spacing != FC_PROPORTIONAL
#ifdef FC_DUAL
&& spacing != FC_DUAL
#endif /* FC_DUAL */
)
{
font->min_width = font->max_width = font->average_width
= font->space_width = xftfont->max_advance_width;
XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents);
}
else
{
XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents);
font->min_width = font->max_width = font->space_width
= extents.xOff;
if (font->space_width <= 0)
/* dirty workaround */
font->space_width = pixel_size;
XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents);
font->average_width = (font->space_width + extents.xOff) / 95;
}
unblock_input ();
font->ascent = xftfont->ascent;
font->descent = xftfont->descent;
if (pixel_size >= 5)
{
/* The above condition is a dirty workaround because
XftTextExtents8 behaves strangely for some fonts
(e.g. "Dejavu Sans Mono") when pixel_size is less than 5. */
if (font->ascent < extents.y)
font->ascent = extents.y;
if (font->descent < extents.height - extents.y)
font->descent = extents.height - extents.y;
}
font->height = font->ascent + font->descent;
if (XINT (AREF (entity, FONT_SIZE_INDEX)) == 0)
{
int upEM = ft_face->units_per_EM;
font->underline_position = -ft_face->underline_position * size / upEM;
font->underline_thickness = ft_face->underline_thickness * size / upEM;
if (font->underline_thickness > 2)
font->underline_position -= font->underline_thickness / 2;
}
else
{
font->underline_position = -1;
font->underline_thickness = 0;
}
#ifdef HAVE_LIBOTF
xftfont_info->maybe_otf = (ft_face->face_flags & FT_FACE_FLAG_SFNT) != 0;
xftfont_info->otf = NULL;
#endif /* HAVE_LIBOTF */
xftfont_info->ft_size = ft_face->size;
font->baseline_offset = 0;
font->relative_compose = 0;
font->default_ascent = 0;
font->vertical_centering = 0;
#ifdef FT_BDF_H
if (! (ft_face->face_flags & FT_FACE_FLAG_SFNT))
{
BDF_PropertyRec rec;
if (FT_Get_BDF_Property (ft_face, "_MULE_BASELINE_OFFSET", &rec) == 0
&& rec.type == BDF_PROPERTY_TYPE_INTEGER)
font->baseline_offset = rec.u.integer;
if (FT_Get_BDF_Property (ft_face, "_MULE_RELATIVE_COMPOSE", &rec) == 0
&& rec.type == BDF_PROPERTY_TYPE_INTEGER)
font->relative_compose = rec.u.integer;
if (FT_Get_BDF_Property (ft_face, "_MULE_DEFAULT_ASCENT", &rec) == 0
&& rec.type == BDF_PROPERTY_TYPE_INTEGER)
font->default_ascent = rec.u.integer;
}
#endif
return font_object;
}
void
gui_draw_task (task *tk)
{
int len;
int x = tk->pos_x;
int taskw = tk->width;
#ifdef XFT
XGlyphInfo ext;
XftColor col;
#endif
if (!tk->name)
return;
gui_draw_vline (x);
if (tk->focused)
{
draw_box (x, taskw);
} else
{
set_foreground (5); /* mid gray */
fill_rect (x + 2, 0, taskw - 1, WINHEIGHT);
}
{
register int text_x = x + TEXTPAD + TEXTPAD + ICONWIDTH;
#ifdef XFT
/* check how many chars can fit */
len = strlen (tk->name);
while (len > 0)
{
XftTextExtents8 (dd, xfs, tk->name, len, &ext);
if (ext.width < taskw - (text_x - x) - 2)
break;
len--;
}
col.color.alpha = 0xffff;
if (tk->iconified)
{
/* draw task's name dark (iconified) */
col.color.red = cols[3].red;
col.color.green = cols[3].green;
col.color.blue = cols[3].blue;
XftDrawString8 (xftdraw, &col, xfs, text_x, text_y + 1, tk->name, len);
col.color.red = cols[3].red;
col.color.green = cols[3].green;
col.color.blue = cols[3].blue;
} else
{
col.color.red = cols[3].red;
col.color.green = cols[3].green;
col.color.blue = cols[3].blue;
}
/* draw task's name here */
XftDrawString8 (xftdraw, &col, xfs, text_x, text_y, tk->name, len);
#else
/* check how many chars can fit */
len = strlen (tk->name);
while (XTextWidth (xfs, tk->name, len) >= taskw - (text_x - x) - 2
&& len > 0)
len--;
if (tk->iconified)
{
/* draw task's name dark (iconified) */
set_foreground (4);
XDrawString (dd, tb.win, fore_gc, text_x, text_y + 1, tk->name, len);
set_foreground (3);
} else if (tk->focused)
{
set_foreground (7);
}
else
{
set_foreground (4);
}
/* draw task's name here */
XDrawString (dd, tb.win, fore_gc, text_x, text_y, tk->name, len);
#endif
}
#ifndef HAVE_XPM
if (!tk->icon)
return;
#endif
/* draw the task's icon */
XSetClipMask (dd, fore_gc, tk->mask);
XSetClipOrigin (dd, fore_gc, x + TEXTPAD, (WINHEIGHT - ICONHEIGHT) / 2);
XCopyArea (dd, tk->icon, tb.win, fore_gc, 0, 0, ICONWIDTH, ICONHEIGHT,
x + TEXTPAD, (WINHEIGHT - ICONHEIGHT) / 2);
XSetClipMask (dd, fore_gc, None);
}
int
xwindow_text_width_xft(XWindow *xw, char *text) {
XGlyphInfo extents;
XftTextExtents8(DISPLAY(xw), xw->font->font_xft, (FcChar8 *)text, strlen(text), &extents);
return extents.xOff;
}
void textbox_draw(textbox *tb)
{
int i;
XGlyphInfo extents;
GC context = XCreateGC(display, tb->window, 0, 0);
Pixmap canvas = XCreatePixmap(display, tb->window, tb->w, tb->h, DefaultDepth(display, DefaultScreen(display)));
XftDraw *draw = XftDrawCreate(display, canvas, DefaultVisual(display, DefaultScreen(display)), DefaultColormap(display, DefaultScreen(display)));
// clear canvas
XftDrawRect(draw, &tb->color_bg, 0, 0, tb->w, tb->h);
char *line = tb->text,
*text = tb->text ? tb->text: "",
*prompt = tb->prompt ? tb->prompt: "";
int text_len = strlen(text);
int length = text_len;
int line_height = tb->font->ascent + tb->font->descent;
int line_width = 0;
int cursor_x = 0;
int cursor_offset = 0;
int cursor_width = MAX(2, line_height/10);
if (tb->flags & TB_EDITABLE)
{
int prompt_len = strlen(prompt);
length = text_len + prompt_len;
cursor_offset = MIN(tb->cursor + prompt_len, length);
line = alloca(length + 10);
sprintf(line, "%s%s", prompt, text);
// replace spaces so XftTextExtents8 includes their width
for (i = 0; i < length; i++) if (isspace(line[i])) line[i] = '_';
// calc cursor position
XftTextExtents8(display, tb->font, (unsigned char*)line, cursor_offset, &extents);
cursor_x = extents.width;
// restore correct text string with spaces
sprintf(line, "%s%s", prompt, text);
}
// calc full input text width
XftTextExtents8(display, tb->font, (unsigned char*)line, length, &extents);
line_width = extents.width;
int x = 0, y = tb->font->ascent;
if (tb->flags & TB_RIGHT) x = tb->w - line_width;
if (tb->flags & TB_CENTER) x = (tb->w - line_width) / 2;
// draw the text, including any prompt in edit mode
XftDrawString8(draw, &tb->color_fg, tb->font, x, y, (unsigned char*)line, length);
// draw the cursor
if (tb->flags & TB_EDITABLE)
XftDrawRect(draw, &tb->color_fg, cursor_x, 2, cursor_width, line_height-4);
// flip canvas to window
XCopyArea(display, canvas, tb->window, context, 0, 0, tb->w, tb->h, 0, 0);
XFreeGC(display, context);
XftDrawDestroy(draw);
XFreePixmap(display, canvas);
}