static void apply_xft_settings (struct x_display_info *dpyinfo, struct xsettings *settings) { #ifdef HAVE_XFT FcPattern *pat; struct xsettings oldsettings; bool changed = false; memset (&oldsettings, 0, sizeof (oldsettings)); pat = FcPatternCreate (); XftDefaultSubstitute (dpyinfo->display, XScreenNumberOfScreen (dpyinfo->screen), pat); FcPatternGetBool (pat, FC_ANTIALIAS, 0, &oldsettings.aa); FcPatternGetBool (pat, FC_HINTING, 0, &oldsettings.hinting); #ifdef FC_HINT_STYLE FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &oldsettings.hintstyle); #endif FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &oldsettings.lcdfilter); FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba); FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi); if ((settings->seen & SEEN_AA) != 0 && oldsettings.aa != settings->aa) { FcPatternDel (pat, FC_ANTIALIAS); FcPatternAddBool (pat, FC_ANTIALIAS, settings->aa); changed = true; oldsettings.aa = settings->aa; } if ((settings->seen & SEEN_HINTING) != 0 && oldsettings.hinting != settings->hinting) { FcPatternDel (pat, FC_HINTING); FcPatternAddBool (pat, FC_HINTING, settings->hinting); changed = true; oldsettings.hinting = settings->hinting; } if ((settings->seen & SEEN_RGBA) != 0 && oldsettings.rgba != settings->rgba) { FcPatternDel (pat, FC_RGBA); FcPatternAddInteger (pat, FC_RGBA, settings->rgba); oldsettings.rgba = settings->rgba; changed = true; } /* Older fontconfig versions don't have FC_LCD_FILTER. */ if ((settings->seen & SEEN_LCDFILTER) != 0 && oldsettings.lcdfilter != settings->lcdfilter) { FcPatternDel (pat, FC_LCD_FILTER); FcPatternAddInteger (pat, FC_LCD_FILTER, settings->lcdfilter); changed = true; oldsettings.lcdfilter = settings->lcdfilter; } #ifdef FC_HINT_STYLE if ((settings->seen & SEEN_HINTSTYLE) != 0 && oldsettings.hintstyle != settings->hintstyle) { FcPatternDel (pat, FC_HINT_STYLE); FcPatternAddInteger (pat, FC_HINT_STYLE, settings->hintstyle); changed = true; oldsettings.hintstyle = settings->hintstyle; } #endif if ((settings->seen & SEEN_DPI) != 0 && settings->dpi > 0 /* The following conjunct avoids setting `changed' to true when old and new dpi settings do not differ "substantially". Otherwise, the dynamic-setting Elisp code may process all sorts of unrelated settings that override users' font customizations, among others. Compare: https://lists.gnu.org/r/emacs-devel/2016-05/msg00557.html https://lists.gnu.org/r/bug-gnu-emacs/2016-12/msg00820.html As soon as the dynamic-settings code has been tested and verified, this Emacs 25.2 workaround should be removed. */ && ((oldsettings.dpi >= settings->dpi && (oldsettings.dpi - settings->dpi) > 2) || ((settings->dpi > oldsettings.dpi) && (settings->dpi - oldsettings.dpi) > 2))) { FcPatternDel (pat, FC_DPI); FcPatternAddDouble (pat, FC_DPI, settings->dpi); changed = true; oldsettings.dpi = settings->dpi; /* Changing the DPI on this display affects all frames on it. Check FRAME_RES_X and FRAME_RES_Y in frame.h to see how. */ dpyinfo->resy = dpyinfo->resx = settings->dpi; } if (changed) { static char const format[] = "Antialias: %d, Hinting: %d, RGBA: %d, LCDFilter: %d, " "Hintstyle: %d, DPI: %f"; enum { d_formats = 5, d_growth = INT_BUFSIZE_BOUND (int) - sizeof "%d", lf_formats = 1, max_f_integer_digits = DBL_MAX_10_EXP + 1, f_precision = 6, lf_growth = (sizeof "-." + max_f_integer_digits + f_precision - sizeof "%f") }; char buf[sizeof format + d_formats * d_growth + lf_formats * lf_growth]; XftDefaultSet (dpyinfo->display, pat); store_config_changed_event (Qfont_render, XCAR (dpyinfo->name_list_element)); Vxft_settings = make_formatted_string (buf, format, oldsettings.aa, oldsettings.hinting, oldsettings.rgba, oldsettings.lcdfilter, oldsettings.hintstyle, oldsettings.dpi); } else FcPatternDestroy (pat); #endif /* HAVE_XFT */ }
static void apply_xft_settings (struct x_display_info *dpyinfo, struct xsettings *settings) { #ifdef HAVE_XFT FcPattern *pat; struct xsettings oldsettings; bool changed = false; memset (&oldsettings, 0, sizeof (oldsettings)); pat = FcPatternCreate (); XftDefaultSubstitute (dpyinfo->display, XScreenNumberOfScreen (dpyinfo->screen), pat); FcPatternGetBool (pat, FC_ANTIALIAS, 0, &oldsettings.aa); FcPatternGetBool (pat, FC_HINTING, 0, &oldsettings.hinting); #ifdef FC_HINT_STYLE FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &oldsettings.hintstyle); #endif FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &oldsettings.lcdfilter); FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba); FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi); if ((settings->seen & SEEN_AA) != 0 && oldsettings.aa != settings->aa) { FcPatternDel (pat, FC_ANTIALIAS); FcPatternAddBool (pat, FC_ANTIALIAS, settings->aa); changed = true; oldsettings.aa = settings->aa; } if ((settings->seen & SEEN_HINTING) != 0 && oldsettings.hinting != settings->hinting) { FcPatternDel (pat, FC_HINTING); FcPatternAddBool (pat, FC_HINTING, settings->hinting); changed = true; oldsettings.hinting = settings->hinting; } if ((settings->seen & SEEN_RGBA) != 0 && oldsettings.rgba != settings->rgba) { FcPatternDel (pat, FC_RGBA); FcPatternAddInteger (pat, FC_RGBA, settings->rgba); oldsettings.rgba = settings->rgba; changed = true; } /* Older fontconfig versions don't have FC_LCD_FILTER. */ if ((settings->seen & SEEN_LCDFILTER) != 0 && oldsettings.lcdfilter != settings->lcdfilter) { FcPatternDel (pat, FC_LCD_FILTER); FcPatternAddInteger (pat, FC_LCD_FILTER, settings->lcdfilter); changed = true; oldsettings.lcdfilter = settings->lcdfilter; } #ifdef FC_HINT_STYLE if ((settings->seen & SEEN_HINTSTYLE) != 0 && oldsettings.hintstyle != settings->hintstyle) { FcPatternDel (pat, FC_HINT_STYLE); FcPatternAddInteger (pat, FC_HINT_STYLE, settings->hintstyle); changed = true; oldsettings.hintstyle = settings->hintstyle; } #endif if ((settings->seen & SEEN_DPI) != 0 && oldsettings.dpi != settings->dpi && settings->dpi > 0) { FcPatternDel (pat, FC_DPI); FcPatternAddDouble (pat, FC_DPI, settings->dpi); changed = true; oldsettings.dpi = settings->dpi; /* Changing the DPI on this display affects all frames on it. Check FRAME_RES_X and FRAME_RES_Y in frame.h to see how. */ dpyinfo->resy = dpyinfo->resx = settings->dpi; } if (changed) { static char const format[] = "Antialias: %d, Hinting: %d, RGBA: %d, LCDFilter: %d, " "Hintstyle: %d, DPI: %f"; enum { d_formats = 5, d_growth = INT_BUFSIZE_BOUND (int) - sizeof "%d", lf_formats = 1, max_f_integer_digits = DBL_MAX_10_EXP + 1, f_precision = 6, lf_growth = (sizeof "-." + max_f_integer_digits + f_precision - sizeof "%f") }; char buf[sizeof format + d_formats * d_growth + lf_formats * lf_growth]; XftDefaultSet (dpyinfo->display, pat); store_config_changed_event (Qfont_render, XCAR (dpyinfo->name_list_element)); Vxft_settings = make_formatted_string (buf, format, oldsettings.aa, oldsettings.hinting, oldsettings.rgba, oldsettings.lcdfilter, oldsettings.hintstyle, oldsettings.dpi); } else FcPatternDestroy (pat); #endif /* HAVE_XFT */ }