/**
* gtk_psfont_get_char_size:
* @psfont: a #GtkPSFont
* @font: a #GdkFont
* @latin_font: a #GdkFont
* @wc: a #GdkWchar
* @width: font width
* @ascent: font ascent
* @descent: font descent
*
* Get font character size.
*/
void
gtk_psfont_get_char_size(GtkPSFont *psfont,
GdkFont *font,
GdkFont *latin_font,
GdkWChar wc,
gint *width,
gint *ascent,
gint *descent)
{
GdkFont *dfont;
gint w, a, d, w0;
if (psfont->i18n_latinfamily && psfont->vertical && (0 > wc || wc > 0x7f)) {
/* vertical-writing CJK postscript fonts. */
w = (font->ascent + font->descent);
w0 = gdk_char_width_wc(font, wc);
d = w0 * font->descent / w;
a = w0 - d;
} else {
if (psfont->i18n_latinfamily && 0 <= wc && wc <= 0x7f)
dfont = latin_font;
else
dfont = font;
w = gdk_char_width_wc(dfont, wc);
a = dfont->ascent;
d = dfont->descent;
}
if (width != NULL) *width = w;
if (ascent != NULL) *ascent = a;
if (descent != NULL) *descent = d;
}
/* subfunction of gtk_plot_gdk_draw_string(). */
static gint
drawstring(GtkPlotPC *pc,
GdkBitmap *dest,
GdkGC *gc,
GdkColor *black, GdkColor *white,
gint dx, gint dy,
GtkPSFont *psfont,
GdkFont *font,
GdkFont *latin_font,
GdkWChar wc)
{
GdkBitmap *tmp;
GdkFont *dfont;
GdkImage *image;
gint w, h, a, d, x, y, d2;
guint32 pixel;
if (psfont->i18n_latinfamily && psfont->vertical && (0 > wc || wc > 0x7f)) {
/* vertical-writing CJK postscript fonts. */
dfont = font;
w = gdk_char_width_wc(dfont, wc);
a = dfont->ascent;
d = dfont->descent;
h = a + d;
d2 = w * d / h;
tmp = gdk_pixmap_new(GTK_PLOT_GDK(pc)->window, w, h, 1);
gdk_gc_set_foreground(gc, white);
gdk_draw_rectangle(tmp, gc, TRUE, 0, 0, -1, -1);
gdk_gc_set_foreground(gc, black);
gdk_draw_text_wc(tmp, dfont, gc, 0, a, &wc, 1);
image = gdk_image_get(tmp, 0, 0, w, h);
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
pixel = gdk_image_get_pixel(image, x, y);
if (pixel == black->pixel)
gdk_draw_point(dest, gc, dx + y, dy + d2 - x);
}
}
gdk_image_destroy(image);
gdk_pixmap_unref(tmp);
return h;
} else {
/* horizontal writing */
if (psfont->i18n_latinfamily && 0 <= wc && wc <= 0x7f)
dfont = latin_font;
else
dfont = font;
gdk_draw_text_wc(dest, dfont, gc, dx, dy, &wc, 1);
w = gdk_char_width_wc(dfont, wc);
return w;
}
}
