font.c for the Openbox window manager
Copyright (c) 2006 Mikael Magnusson
- Copyright (c) 2003 Ben Jansens
+ Copyright (c) 2003-2007 Dana Jansens
Copyright (c) 2003 Derek Foreman
This program is free software; you can redistribute it and/or modify
#include <stdlib.h>
#include <locale.h>
-#define OB_SHADOW "shadow"
-#define OB_SHADOW_OFFSET "shadowoffset"
-#define OB_SHADOW_ALPHA "shadowtint"
-
-FcObjectType objs[] = {
- { OB_SHADOW, FcTypeBool },
- { OB_SHADOW_OFFSET, FcTypeInteger },
- { OB_SHADOW_ALPHA, FcTypeInteger }
-};
-
-static gboolean started = FALSE;
-
-static void font_startup(void)
-{
- if (!XftInit(0)) {
- g_warning(_("Couldn't initialize Xft."));
- exit(EXIT_FAILURE);
- }
-
- /* Here we are teaching xft about the shadow, shadowoffset & shadowtint */
- FcNameRegisterObjectTypes(objs, (sizeof(objs) / sizeof(objs[0])));
-}
-
static void measure_font(const RrInstance *inst, RrFont *f)
{
PangoFontMetrics *metrics;
- gchar *locale, *p;
-
- /* get the default language from the locale
- (based on gtk_get_default_language in gtkmain.c) */
- locale = g_strdup(setlocale(LC_CTYPE, NULL));
- if ((p = strchr(locale, '.'))) *p = '\0'; /* strip off the . */
- if ((p = strchr(locale, '@'))) *p = '\0'; /* strip off the @ */
+ static PangoLanguage *lang = NULL;
+
+ if (lang == NULL) {
+#if PANGO_VERSION_MAJOR > 1 || \
+ (PANGO_VERSION_MAJOR == 1 && PANGO_VERSION_MINOR >= 16)
+ lang = pango_language_get_default();
+#else
+ gchar *locale, *p;
+ /* get the default language from the locale
+ (based on gtk_get_default_language in gtkmain.c) */
+ locale = g_strdup(setlocale(LC_CTYPE, NULL));
+ if ((p = strchr(locale, '.'))) *p = '\0'; /* strip off the . */
+ if ((p = strchr(locale, '@'))) *p = '\0'; /* strip off the @ */
+ lang = pango_language_from_string(locale);
+ g_free(locale);
+#endif
+ }
/* measure the ascent and descent */
- metrics = pango_context_get_metrics(inst->pango, f->font_desc,
- pango_language_from_string(locale));
+ metrics = pango_context_get_metrics(inst->pango, f->font_desc, lang);
f->ascent = pango_font_metrics_get_ascent(metrics);
f->descent = pango_font_metrics_get_descent(metrics);
pango_font_metrics_unref(metrics);
- g_free(locale);
}
-static RrFont *openfont(const RrInstance *inst, gchar *fontstring)
+RrFont *RrFontOpen(const RrInstance *inst, const gchar *name, gint size,
+ RrFontWeight weight, RrFontSlant slant)
{
- /* This function is called for each font in the theme file. */
- /* It returns a pointer to a RrFont struct after filling it. */
RrFont *out;
- FcPattern *pat;
- gint tint;
- gchar *sval;
- gint ival;
-
- if (!(pat = XftNameParse(fontstring)))
- return NULL;
+ PangoWeight pweight;
+ PangoStyle pstyle;
+ PangoAttrList *attrlist;
out = g_new(RrFont, 1);
out->inst = inst;
+ out->ref = 1;
out->font_desc = pango_font_description_new();
out->layout = pango_layout_new(inst->pango);
-
- /* get the data from the parsed xft string */
-
- /* get the family */
- if (FcPatternGetString(pat, "family", 0,
- (FcChar8**)&sval) == FcResultMatch)
- pango_font_description_set_family(out->font_desc, sval);
-
- /* get the weight */
- if (FcPatternGetInteger(pat, "weight", 0, &ival) == FcResultMatch) {
- if (ival == FC_WEIGHT_LIGHT)
- pango_font_description_set_weight(out->font_desc,
- PANGO_WEIGHT_LIGHT);
- else if (ival == FC_WEIGHT_DEMIBOLD)
- pango_font_description_set_weight(out->font_desc,
- PANGO_WEIGHT_SEMIBOLD);
- else if (ival == FC_WEIGHT_BOLD)
- pango_font_description_set_weight(out->font_desc,
- PANGO_WEIGHT_BOLD);
- else if (ival == FC_WEIGHT_BLACK)
- pango_font_description_set_weight(out->font_desc,
- PANGO_WEIGHT_ULTRABOLD);
+ out->shortcut_underline = pango_attr_underline_new(PANGO_UNDERLINE_LOW);
+ out->shortcut_underline->start_index = 0;
+ out->shortcut_underline->end_index = 0;
+
+ attrlist = pango_attr_list_new();
+ /* shortcut_underline is owned by the attrlist */
+ pango_attr_list_insert(attrlist, out->shortcut_underline);
+ /* the attributes are owned by the layout */
+ pango_layout_set_attributes(out->layout, attrlist);
+ pango_attr_list_unref(attrlist);
+
+ switch (weight) {
+ case RR_FONTWEIGHT_LIGHT: pweight = PANGO_WEIGHT_LIGHT; break;
+ case RR_FONTWEIGHT_NORMAL: pweight = PANGO_WEIGHT_NORMAL; break;
+ case RR_FONTWEIGHT_SEMIBOLD: pweight = PANGO_WEIGHT_SEMIBOLD; break;
+ case RR_FONTWEIGHT_BOLD: pweight = PANGO_WEIGHT_BOLD; break;
+ case RR_FONTWEIGHT_ULTRABOLD: pweight = PANGO_WEIGHT_ULTRABOLD; break;
+ default: g_assert_not_reached();
}
- /* get the style/slant */
- if (FcPatternGetInteger(pat, "slant", 0, &ival) == FcResultMatch) {
- if (ival == FC_SLANT_ITALIC)
- pango_font_description_set_style(out->font_desc,
- PANGO_STYLE_ITALIC);
- else if (ival == FC_SLANT_OBLIQUE)
- pango_font_description_set_style(out->font_desc,
- PANGO_STYLE_OBLIQUE);
+ switch (slant) {
+ case RR_FONTSLANT_NORMAL: pstyle = PANGO_STYLE_NORMAL; break;
+ case RR_FONTSLANT_ITALIC: pstyle = PANGO_STYLE_ITALIC; break;
+ case RR_FONTSLANT_OBLIQUE: pstyle = PANGO_STYLE_OBLIQUE; break;
+ default: g_assert_not_reached();
}
- /* get the size */
- if (FcPatternGetInteger(pat, "size", 0, &ival) == FcResultMatch)
- pango_font_description_set_size(out->font_desc, ival * PANGO_SCALE);
- else if (FcPatternGetInteger(pat, "pixelsize", 0, &ival) == FcResultMatch)
- pango_font_description_set_absolute_size(out->font_desc,
- ival * PANGO_SCALE);
-
- if (FcPatternGetBool(pat, OB_SHADOW, 0, &out->shadow) != FcResultMatch)
- out->shadow = FALSE;
-
- if (FcPatternGetInteger(pat, OB_SHADOW_OFFSET, 0, &out->offset) !=
- FcResultMatch)
- out->offset = 1;
-
- if (FcPatternGetInteger(pat, OB_SHADOW_ALPHA, 0, &tint) != FcResultMatch)
- tint = 25;
- if (tint > 100) tint = 100;
- else if (tint < -100) tint = -100;
- out->tint = tint;
+ /* setup the font */
+ pango_font_description_set_family(out->font_desc, name);
+ pango_font_description_set_weight(out->font_desc, pweight);
+ pango_font_description_set_style(out->font_desc, pstyle);
+ pango_font_description_set_size(out->font_desc, size * PANGO_SCALE);
/* setup the layout */
pango_layout_set_font_description(out->layout, out->font_desc);
pango_layout_set_single_paragraph_mode(out->layout, TRUE);
- pango_layout_set_ellipsize(out->layout, PANGO_ELLIPSIZE_MIDDLE);
/* get the ascent and descent */
measure_font(inst, out);
return out;
}
-RrFont *RrFontOpen(const RrInstance *inst, gchar *fontstring)
+RrFont *RrFontOpenDefault(const RrInstance *inst)
{
- RrFont *out;
-
- if (!started) {
- font_startup();
- started = TRUE;
- }
-
- if ((out = openfont(inst, fontstring)))
- return out;
- g_warning(_("Unable to load font: %s\n"), fontstring);
- g_warning(_("Trying fallback font: %s\n"), "sans");
-
- if ((out = openfont(inst, "sans")))
- return out;
- g_warning(_("Unable to load font: %s\n"), "sans");
+ return RrFontOpen(inst, RrDefaultFontFamily, RrDefaultFontSize,
+ RrDefaultFontWeight, RrDefaultFontSlant);
+}
- return NULL;
+void RrFontRef(RrFont *f)
+{
+ ++f->ref;
}
void RrFontClose(RrFont *f)
{
if (f) {
- g_object_unref(f->layout);
- pango_font_description_free(f->font_desc);
- g_free(f);
+ if (--f->ref < 1) {
+ g_object_unref(f->layout);
+ pango_font_description_free(f->font_desc);
+ g_free(f);
+ }
}
}
static void font_measure_full(const RrFont *f, const gchar *str,
- gint *x, gint *y)
+ gint *x, gint *y, gint shadow_x, gint shadow_y)
{
PangoRectangle rect;
pango_layout_set_text(f->layout, str, -1);
pango_layout_set_width(f->layout, -1);
- pango_layout_get_pixel_extents(f->layout, NULL, &rect);
- *x = rect.width + (f->shadow ? ABS(f->offset) : 0);
- *y = rect.height + (f->shadow ? ABS(f->offset) : 0);
+
+ /* pango_layout_get_pixel_extents lies! this is the right way to get the
+ size of the text's area */
+ pango_layout_get_extents(f->layout, NULL, &rect);
+#if PANGO_VERSION_MAJOR > 1 || \
+ (PANGO_VERSION_MAJOR == 1 && PANGO_VERSION_MINOR >= 16)
+ /* pass the logical rect as the ink rect, this is on purpose so we get the
+ full area for the text */
+ pango_extents_to_pixels(&rect, NULL);
+#else
+ rect.width = (rect.width + PANGO_SCALE - 1) / PANGO_SCALE;
+ rect.height = (rect.height + PANGO_SCALE - 1) / PANGO_SCALE;
+#endif
+ *x = rect.width + ABS(shadow_x) + 4 /* we put a 2 px edge on each side */;
+ *y = rect.height + ABS(shadow_y);
}
-RrSize *RrFontMeasureString(const RrFont *f, const gchar *str)
+RrSize *RrFontMeasureString(const RrFont *f, const gchar *str,
+ gint shadow_x, gint shadow_y)
{
RrSize *size;
size = g_new(RrSize, 1);
- font_measure_full(f, str, &size->width, &size->height);
+ font_measure_full(f, str, &size->width, &size->height, shadow_x, shadow_y);
return size;
}
-gint RrFontHeight(const RrFont *f)
+gint RrFontHeight(const RrFont *f, gint shadow_y)
{
- return (f->ascent + f->descent) / PANGO_SCALE +
- (f->shadow ? f->offset : 0);
+ return (f->ascent + f->descent) / PANGO_SCALE + ABS(shadow_y);
}
static inline int font_calculate_baseline(RrFont *f, gint height)
XftColor c;
gint mw;
PangoRectangle rect;
+ PangoAttrList *attrlist;
+ PangoEllipsizeMode ell;
/* center the text vertically
We do this centering based on the 'baseline' since different fonts have
w = area->width - 4;
h = area->height;
+ switch (t->ellipsize) {
+ case RR_ELLIPSIZE_NONE:
+ ell = PANGO_ELLIPSIZE_NONE;
+ break;
+ case RR_ELLIPSIZE_START:
+ ell = PANGO_ELLIPSIZE_START;
+ break;
+ case RR_ELLIPSIZE_MIDDLE:
+ ell = PANGO_ELLIPSIZE_MIDDLE;
+ break;
+ case RR_ELLIPSIZE_END:
+ ell = PANGO_ELLIPSIZE_END;
+ break;
+ }
+
pango_layout_set_text(t->font->layout, t->string, -1);
pango_layout_set_width(t->font->layout, w * PANGO_SCALE);
+ pango_layout_set_ellipsize(t->font->layout, ell);
+
+ /* * * end of setting up the layout * * */
pango_layout_get_pixel_extents(t->font->layout, NULL, &rect);
mw = rect.width;
- /* pango_layout_set_alignment doesn't work with
+ /* pango_layout_set_alignment doesn't work with
pango_xft_render_layout_line */
switch (t->justify) {
case RR_JUSTIFY_LEFT:
break;
}
- if (t->font->shadow) {
- if (t->font->tint >= 0) {
- c.color.red = 0;
- c.color.green = 0;
- c.color.blue = 0;
- c.color.alpha = 0xffff * t->font->tint / 100;
- c.pixel = BlackPixel(RrDisplay(t->font->inst),
- RrScreen(t->font->inst));
- } else {
- c.color.red = 0xffff;
- c.color.green = 0xffff;
- c.color.blue = 0xffff;
- c.color.alpha = 0xffff * -t->font->tint / 100;
- c.pixel = WhitePixel(RrDisplay(t->font->inst),
- RrScreen(t->font->inst));
- }
+ if (t->shadow_offset_x || t->shadow_offset_y) {
+ /* From nvidia's readme (chapter 23):
+
+ When rendering to a 32-bit window, keep in mind that the X RENDER
+ extension, used by most composite managers, expects "premultiplied
+ alpha" colors. This means that if your color has components (r,g,b)
+ and alpha value a, then you must render (a*r, a*g, a*b, a) into the
+ target window.
+ */
+ c.color.red = (t->shadow_color->r | t->shadow_color->r << 8) *
+ t->shadow_alpha / 255;
+ c.color.green = (t->shadow_color->g | t->shadow_color->g << 8) *
+ t->shadow_alpha / 255;
+ c.color.blue = (t->shadow_color->b | t->shadow_color->b << 8) *
+ t->shadow_alpha / 255;
+ c.color.alpha = 0xffff * t->shadow_alpha / 255;
+ c.pixel = t->shadow_color->pixel;
+
/* see below... */
pango_xft_render_layout_line
(d, &c, pango_layout_get_line(t->font->layout, 0),
- (x + t->font->offset) * PANGO_SCALE,
- (y + t->font->offset) * PANGO_SCALE);
+ (x + t->shadow_offset_x) * PANGO_SCALE,
+ (y + t->shadow_offset_y) * PANGO_SCALE);
}
c.color.red = t->color->r | t->color->r << 8;
c.color.alpha = 0xff | 0xff << 8; /* fully opaque text */
c.pixel = t->color->pixel;
+ if (t->shortcut) {
+ const gchar *s = t->string + t->shortcut_pos;
+
+ t->font->shortcut_underline->start_index = t->shortcut_pos;
+ t->font->shortcut_underline->end_index = t->shortcut_pos +
+ (g_utf8_next_char(s) - s);
+
+ /* the attributes are owned by the layout.
+ re-add the attributes to the layout after changing the
+ start and end index */
+ attrlist = pango_layout_get_attributes(t->font->layout);
+ pango_attr_list_ref(attrlist);
+ pango_layout_set_attributes(t->font->layout, attrlist);
+ pango_attr_list_unref(attrlist);
+ }
+
/* layout_line() uses y to specify the baseline
The line doesn't need to be freed, it's a part of the layout */
pango_xft_render_layout_line
(d, &c, pango_layout_get_line(t->font->layout, 0),
x * PANGO_SCALE, y * PANGO_SCALE);
+
+ if (t->shortcut) {
+ t->font->shortcut_underline->start_index = 0;
+ t->font->shortcut_underline->end_index = 0;
+ /* the attributes are owned by the layout.
+ re-add the attributes to the layout after changing the
+ start and end index */
+ attrlist = pango_layout_get_attributes(t->font->layout);
+ pango_attr_list_ref(attrlist);
+ pango_layout_set_attributes(t->font->layout, attrlist);
+ pango_attr_list_unref(attrlist);
+ }
}
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