render/font.c (raw)
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#include "font.h" #include "theme.h" #include "kernel/openbox.h" #include "kernel/geom.h" #include "kernel/gettext.h" #define _(str) gettext(str) #include <X11/Xft/Xft.h> #include <glib.h> #include <string.h> #define ELIPSES "..." #define ELIPSES_LENGTH(font, shadow, offset) \ (font->elipses_length + (shadow ? offset : 0)) void font_startup(void) { #ifdef DEBUG int version; #endif /* DEBUG */ if (!XftInit(0)) { g_warning(_("Couldn't initialize Xft.\n")); exit(3); } #ifdef DEBUG version = XftGetVersion(); g_message("Using Xft %d.%d.%d (Built against %d.%d.%d).", version / 10000 % 100, version / 100 % 100, version % 100, XFT_MAJOR, XFT_MINOR, XFT_REVISION); #endif } static void measure_height(ObFont *f) { XGlyphInfo info; /* measure an elipses */ XftTextExtentsUtf8(ob_display, f->xftfont, (FcChar8*)ELIPSES, strlen(ELIPSES), &info); f->elipses_length = (signed) info.xOff; } ObFont *font_open(char *fontstring) { ObFont *out; XftFont *xf; if ((xf = XftFontOpenName(ob_display, ob_screen, fontstring))) { out = g_new(ObFont, 1); out->xftfont = xf; measure_height(out); return out; } g_warning(_("Unable to load font: %s\n"), fontstring); g_warning(_("Trying fallback font: %s\n"), "sans"); if ((xf = XftFontOpenName(ob_display, ob_screen, "sans"))) { out = g_new(ObFont, 1); out->xftfont = xf; measure_height(out); return out; } g_warning(_("Unable to load font: %s\n"), "sans"); g_warning(_("Aborting!.\n")); exit(3); /* can't continue without a font */ } void font_close(ObFont *f) { if (f) { XftFontClose(ob_display, f->xftfont); g_free(f); } } void font_measure_full(ObFont *f, char *str, int shadow, int offset, int *x, int *y) { XGlyphInfo info; XftTextExtentsUtf8(ob_display, f->xftfont, (FcChar8*)str, strlen(str), &info); *x = (signed) info.xOff + (shadow ? ABS(offset) : 0); *y = info.height + (shadow ? ABS(offset) : 0); } int font_measure_string(ObFont *f, char *str, int shadow, int offset) { int x, y; font_measure_full (f, str, shadow, offset, &x, &y); return x; } int font_height(ObFont *f, int shadow, int offset) { return f->xftfont->ascent + f->xftfont->descent + (shadow ? offset : 0); } int font_max_char_width(ObFont *f) { return (signed) f->xftfont->max_advance_width; } void font_draw(XftDraw *d, TextureText *t, Rect *area) { int x,y,w,h; XftColor c; GString *text; int mw, em, mh; size_t l; gboolean shortened = FALSE; /* center vertically */ y = area->y + (area->height - font_height(t->font, t->shadow, t->offset)) / 2; w = area->width - theme-bevel * 2; h = area->height; text = g_string_new(t->string); l = g_utf8_strlen(text->str, -1); font_measure_full(t->font, text->str, t->shadow, t->offset, &mw, &mh); while (l && mw > area->width) { shortened = TRUE; /* remove a character from the middle */ text = g_string_erase(text, l-- / 2, 1); em = ELIPSES_LENGTH(t->font, t->shadow, t->offset); /* if the elipses are too large, don't show them at all */ if (em > area->width) shortened = FALSE; font_measure_full(t->font, text->str, t->shadow, t->offset, &mw, &mh); mw += em; } if (shortened) { text = g_string_insert(text, (l + 1) / 2, ELIPSES); l += 3; } if (!l) return; switch (t->justify) { case Justify_Left: x = area->x + theme_bevel; break; case Justify_Right: x = area->x + (w - mw) - theme_bevel; break; case Justify_Center: x = area->x + (w - mw) / 2; break; } l = strlen(text->str); /* number of bytes */ if (t->shadow) { if (t->tint >= 0) { c.color.red = 0; c.color.green = 0; c.color.blue = 0; c.color.alpha = 0xffff * t->tint / 100; /* transparent shadow */ c.pixel = BlackPixel(ob_display, ob_screen); } else { c.color.red = 0xffff * -t->tint / 100; c.color.green = 0xffff * -t->tint / 100; c.color.blue = 0xffff * -t->tint / 100; c.color.alpha = 0xffff * -t->tint / 100; /* transparent shadow */ c.pixel = WhitePixel(ob_display, ob_screen); } XftDrawStringUtf8(d, &c, t->font->xftfont, x + t->offset, t->font->xftfont->ascent + y + t->offset, (FcChar8*)text->str, l); } c.color.red = t->color->r | t->color->r << 8; c.color.green = t->color->g | t->color->g << 8; c.color.blue = t->color->b | t->color->b << 8; c.color.alpha = 0xff | 0xff << 8; /* fully opaque text */ c.pixel = t->color->pixel; XftDrawStringUtf8(d, &c, t->font->xftfont, x, t->font->xftfont->ascent + y, (FcChar8*)text->str, l); return; } |