/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
font.c for the Openbox window manager
- Copyright (c) 2003 Ben Jansens
+ Copyright (c) 2006 Mikael Magnusson
+ Copyright (c) 2003-2007 Dana Jansens
Copyright (c) 2003 Derek Foreman
This program is free software; you can redistribute it and/or modify
#include "color.h"
#include "mask.h"
#include "theme.h"
+#include "geom.h"
+#include "instance.h"
#include "gettext.h"
-#include <X11/Xft/Xft.h>
#include <glib.h>
#include <string.h>
#include <stdlib.h>
+#include <locale.h>
-#define ELIPSES "..."
-#define ELIPSES_LENGTH(font) \
- (font->elipses_length + (font->shadow ? font->offset : 0))
-
-#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)
+static void measure_font(const RrInstance *inst, RrFont *f)
{
- if (!XftInit(0)) {
- g_warning(_("Couldn't initialize Xft."));
- exit(EXIT_FAILURE);
- }
+ PangoFontMetrics *metrics;
+ static PangoLanguage *lang = NULL;
-#ifdef USE_PANGO
- g_type_init();
-#endif /* USE_PANGO */
- /* Here we are teaching xft about the shadow, shadowoffset & shadowtint */
- FcNameRegisterObjectTypes(objs, (sizeof(objs) / sizeof(objs[0])));
-}
+ 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
+ }
-static void measure_font(RrFont *f)
-{
- /* xOff, yOff is the normal spacing to the next glyph. */
- XGlyphInfo info;
+ /* measure the ascent and descent */
+ 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);
- /* measure an elipses */
- XftTextExtentsUtf8(RrDisplay(f->inst), f->xftfont,
- (FcChar8*)ELIPSES, strlen(ELIPSES), &info);
- f->elipses_length = (signed) info.xOff;
}
-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, *match;
- XftFont *font;
- FcResult res;
- gint tint;
-#ifdef USE_PANGO
- guchar *tmp_string = NULL;
- gint tmp_int;
-#endif /* USE_PANGO */
-
- if (!(pat = XftNameParse(fontstring)))
- return NULL;
-
- match = XftFontMatch(RrDisplay(inst), RrScreen(inst), pat, &res);
- FcPatternDestroy(pat);
- if (!match)
- return NULL;
+ PangoWeight pweight;
+ PangoStyle pstyle;
+ PangoAttrList *attrlist;
out = g_new(RrFont, 1);
out->inst = inst;
-#ifdef USE_PANGO
- /* printf("\n\n%s\n\n",fontstring);
- FcPatternPrint(match); */
-
- out->pango_font_description = pango_font_description_new();
-
- if (FcPatternGetString(match, "family", 0, &tmp_string) != FcResultTypeMismatch) {
- pango_font_description_set_family(out->pango_font_description, (gchar *)tmp_string);
- tmp_string = NULL;
- }
- if (FcPatternGetString(match, "style", 0, &tmp_string) != FcResultTypeMismatch) {
- /* Bold ? */
- if (!strcasecmp("bold", (gchar *)tmp_string)) {
- pango_font_description_set_weight(out->pango_font_description, PANGO_WEIGHT_BOLD);
- }
- /* Italic ? */
- else if (!strcasecmp("italic", (gchar *)tmp_string)) {
- pango_font_description_set_style(out->pango_font_description, PANGO_STYLE_ITALIC);
- }
- tmp_string = NULL;
+ out->ref = 1;
+ out->font_desc = pango_font_description_new();
+ out->layout = pango_layout_new(inst->pango);
+ 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();
}
- if (FcPatternGetInteger(match, "pixelsize", 0, &tmp_int) != FcResultTypeMismatch) {
- /* TODO: is PANGO_SCALE correct ?? */
- pango_font_description_set_size(out->pango_font_description, tmp_int*PANGO_SCALE);
+ 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();
}
-#endif /* USE_PANGO */
-
- if (FcPatternGetBool(match, OB_SHADOW, 0, &out->shadow) != FcResultMatch)
- out->shadow = FALSE;
-
- if (FcPatternGetInteger(match, OB_SHADOW_OFFSET, 0, &out->offset) !=
- FcResultMatch)
- out->offset = 1;
-
- if (FcPatternGetInteger(match, OB_SHADOW_ALPHA, 0, &tint) != FcResultMatch)
- tint = 25;
- if (tint > 100) tint = 100;
- else if (tint < -100) tint = -100;
- out->tint = tint;
-
- font = XftFontOpenPattern(RrDisplay(inst), match);
- if (!font) {
- FcPatternDestroy(match);
- g_free(out);
- return NULL;
- } else
- out->xftfont = font;
-
-#ifdef USE_PANGO
- /* FcPatternDestroy(match); */
-#endif /* USE_PANGO */
- measure_font(out);
- return out;
-}
+ /* 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);
-RrFont *RrFontOpen(const RrInstance *inst, gchar *fontstring)
-{
- RrFont *out;
+ /* setup the layout */
+ pango_layout_set_font_description(out->layout, out->font_desc);
+ pango_layout_set_wrap(out->layout, PANGO_WRAP_WORD_CHAR);
- if (!started) {
- font_startup();
- started = TRUE;
- }
+ /* get the ascent and descent */
+ measure_font(inst, out);
- if ((out = openfont(inst, fontstring)))
- return out;
- g_warning(_("Unable to load font: %s\n"), fontstring);
- g_warning(_("Trying fallback font: %s\n"), "sans");
+ return out;
+}
- if ((out = openfont(inst, "sans")))
- return out;
- g_warning(_("Unable to load font: %s\n"), "sans");
+RrFont *RrFontOpenDefault(const RrInstance *inst)
+{
+ return RrFontOpen(inst, RrDefaultFontFamily, RrDefaultFontSize,
+ RrDefaultFontWeight, RrDefaultFontSlant);
+}
- return NULL;
+void RrFontRef(RrFont *f)
+{
+ ++f->ref;
}
void RrFontClose(RrFont *f)
{
if (f) {
- XftFontClose(RrDisplay(f->inst), f->xftfont);
- 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,
+ gboolean flow, gint maxwidth)
{
-#ifdef USE_PANGO
- PangoContext *context;
- PangoLayout *pl;
PangoRectangle rect;
- context = pango_xft_get_context (RrDisplay(f->inst), RrScreen(f->inst));
- pl = pango_layout_new (context);
- pango_layout_set_text(pl, str, -1);
- pango_layout_set_font_description(pl, f->pango_font_description);
- pango_layout_set_single_paragraph_mode(pl, TRUE);
- pango_layout_get_pixel_extents(pl, NULL, &rect);
- *x = rect.width + (f->shadow ? ABS(f->offset) : 0);
- *y = rect.height + (f->shadow ? ABS(f->offset) : 0);
- g_object_unref(pl);
- g_object_unref(context);
-#else
- XGlyphInfo info;
-
- XftTextExtentsUtf8(RrDisplay(f->inst), f->xftfont,
- (const FcChar8*)str, strlen(str), &info);
+ pango_layout_set_text(f->layout, str, -1);
+ if (flow) {
+ pango_layout_set_single_paragraph_mode(f->layout, FALSE);
+ pango_layout_set_width(f->layout, maxwidth * PANGO_SCALE);
+ pango_layout_set_ellipsize(f->layout, PANGO_ELLIPSIZE_NONE);
+ }
+ else {
+ /* single line mode */
+ pango_layout_set_single_paragraph_mode(f->layout, TRUE);
+ pango_layout_set_width(f->layout, -1);
+ pango_layout_set_ellipsize(f->layout, PANGO_ELLIPSIZE_MIDDLE);
+ }
- *x = (signed) info.xOff + (f->shadow ? ABS(f->offset) : 0);
- *y = info.height + (f->shadow ? ABS(f->offset) : 0);
-#endif /* USE_PANGO */
+ /* 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);
}
-gint RrFontMeasureString(const RrFont *f, const gchar *str)
+RrSize *RrFontMeasureString(const RrFont *f, const gchar *str,
+ gint shadow_x, gint shadow_y,
+ gboolean flow, gint maxwidth)
{
- gint x, y;
- font_measure_full (f, str, &x, &y);
- return x + 4;
-}
+ RrSize *size;
-gint RrFontHeight(const RrFont *f)
-{
-#ifndef USE_PANGO
- return f->xftfont->ascent + f->xftfont->descent +
- (f->shadow ? f->offset : 0);
-#else /* USE_PANGO */
- /*
- PangoContext *context = pango_context_new ();
-
- PangoFontMetrics *metrics = pango_context_get_metrics(context, f->pango_font, NULL);
-
- gint result = pango_font_metrics_get_ascent (metrics) +
- pango_font_metrics_get_descent(metrics) +
- (f->shadow ? f->offset : 0);
-
- pango_font_metrics_unref(metrics);
- g_object_unref(context);
- return result;
- */
-#ifndef ANNOYING_QUESTION
-// Obviously you either remove this or pass -DANNOYING_QUESTION to actually
-// compile the code.
-#error XXX Does anyone have any idea how the above is supposed to work?
-#else
-#warning XXX Using very ugly workaround in the meantime.
-#endif
+ g_assert(!flow || maxwidth > 0);
- gint x, y;
- font_measure_full(f, " ", &x, &y);
- return y;
+ size = g_new(RrSize, 1);
+ font_measure_full(f, str, &size->width, &size->height, shadow_x, shadow_y,
+ flow, maxwidth);
+ return size;
+}
-#endif /* USE_PANGO */
+gint RrFontHeight(const RrFont *f, gint shadow_y)
+{
+ return (f->ascent + f->descent) / PANGO_SCALE + ABS(shadow_y);
}
-gint RrFontMaxCharWidth(const RrFont *f)
+static inline int font_calculate_baseline(RrFont *f, gint height)
{
- return (signed) f->xftfont->max_advance_width;
+/* For my own reference:
+ * _________
+ * ^space/2 ^height ^baseline
+ * v_________|_ |
+ * | ^ascent | _ _
+ * | | | | |_ _____ _| |_ _ _
+ * | | | | _/ -_) \ / _| || |
+ * | v_________v \__\___/_\_\\__|\_, |
+ * | ^descent |__/
+ * __________|_v
+ * ^space/2 |
+ * V_________v
+ */
+ return (((height * PANGO_SCALE) /* height of the space in pango units */
+ - (f->ascent + f->descent)) /* minus space taken up by text */
+ / 2 /* divided by two -> half of the empty space (this is the top
+ of the text) */
+ + f->ascent) /* now move down to the baseline */
+ / PANGO_SCALE; /* back to pixels */
}
void RrFontDraw(XftDraw *d, RrTextureText *t, RrRect *area)
{
gint x,y,w,h;
XftColor c;
- GString *text;
- gint mw, mh;
-#ifndef USE_PANGO
- size_t l;
- gboolean shortened = FALSE;
-#else
- PangoLayout *pl;
- PangoContext *context;
+ gint mw;
+ PangoRectangle rect;
+ PangoAttrList *attrlist;
+ PangoEllipsizeMode ell;
- context = pango_xft_get_context (RrDisplay(t->font->inst), RrScreen(t->font->inst));
- pl = pango_layout_new (context);
-#endif /* USE_PANGO */
+ g_assert(!t->flow || t->maxwidth > 0);
+
+ y = area->y;
+ if (!t->flow)
+ /* center the text vertically
+ We do this centering based on the 'baseline' since different fonts
+ have different top edges. It looks bad when the whole string is
+ moved when 1 character from a non-default language is included in
+ the string */
+ y += font_calculate_baseline(t->font, area->height);
- /* center vertically */
- y = area->y +
- (area->height - RrFontHeight(t->font)) / 2;
/* the +2 and -4 leave a small blank edge on the sides */
x = area->x + 2;
- w = area->width - 4;
+ w = area->width;
+ if (t->flow) w = MAX(w, t->maxwidth);
+ w -= 4;
h = area->height;
- text = g_string_new(t->string);
-#ifndef USE_PANGO
- l = g_utf8_strlen(text->str, -1);
- font_measure_full(t->font, text->str, &mw, &mh);
- while (l && mw > area->width) {
- shortened = TRUE;
- /* remove a character from the middle */
- text = g_string_erase(text, l-- / 2, 1);
- /* if the elipses are too large, don't show them at all */
- if (ELIPSES_LENGTH(t->font) > area->width)
- shortened = FALSE;
- font_measure_full(t->font, text->str, &mw, &mh);
- mw += ELIPSES_LENGTH(t->font);
- }
- if (shortened) {
- text = g_string_insert(text, (l + 1) / 2, ELIPSES);
- l += 3;
+ if (t->flow)
+ ell = PANGO_ELLIPSIZE_NONE;
+ else {
+ 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;
+ }
}
- if (!l) return;
+ 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);
+ pango_layout_set_single_paragraph_mode(t->font->layout, !t->flow);
+
+ /* * * 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_xft_render_layout_line */
switch (t->justify) {
case RR_JUSTIFY_LEFT:
break;
break;
}
- l = strlen(text->str); /* number of bytes */
-
+ 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... */
+ if (!t->flow) {
+ pango_xft_render_layout_line
+ (d, &c,
+#if PANGO_VERSION_MAJOR > 1 || \
+ (PANGO_VERSION_MAJOR == 1 && PANGO_VERSION_MINOR >= 16)
+ pango_layout_get_line_readonly(t->font->layout, 0),
#else
- pango_layout_set_text(pl, text->str, -1);
- pango_layout_set_font_description(pl, t->font->pango_font_description);
- pango_layout_set_single_paragraph_mode(pl, TRUE);
- pango_layout_set_width(pl, w * PANGO_SCALE);
- pango_layout_set_ellipsize(pl, PANGO_ELLIPSIZE_MIDDLE);
- pango_layout_set_alignment(pl, (PangoAlignment)(t->justify));
-#endif /* USE_PANGO */
-
- 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));
-#ifndef USE_PANGO
+ pango_layout_get_line(t->font->layout, 0),
+#endif
+ (x + t->shadow_offset_x) * PANGO_SCALE,
+ (y + t->shadow_offset_y) * PANGO_SCALE);
}
- XftDrawStringUtf8(d, &c, t->font->xftfont, x + t->font->offset,
- t->font->xftfont->ascent + y + t->font->offset,
- (FcChar8*)text->str, l);
- }
-#else /* USE_PANGO */
+ else {
+ pango_xft_render_layout(d, &c, t->font->layout,
+ (x + t->shadow_offset_x) * PANGO_SCALE,
+ (y + t->shadow_offset_y) * PANGO_SCALE);
}
- pango_xft_render_layout(d, &c, pl, (x + t->font->offset) * PANGO_SCALE,
- (y + t->font->offset) * PANGO_SCALE);
}
-#endif /* USE_PANGO */
+
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;
-#ifndef USE_PANGO
- XftDrawStringUtf8(d, &c, t->font->xftfont, x,
- t->font->xftfont->ascent + y,
- (FcChar8*)text->str, l);
-#else /* USE_PANGO */
- pango_xft_render_layout(d, &c, pl, x * PANGO_SCALE, y * PANGO_SCALE);
- g_object_unref(pl);
- g_object_unref(context);
+ 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 */
+ if (!t->flow) {
+ pango_xft_render_layout_line
+ (d, &c,
+#if PANGO_VERSION_MAJOR > 1 || \
+ (PANGO_VERSION_MAJOR == 1 && PANGO_VERSION_MINOR >= 16)
+ pango_layout_get_line_readonly(t->font->layout, 0),
+#else
+ pango_layout_get_line(t->font->layout, 0),
#endif
+ x * PANGO_SCALE,
+ y * PANGO_SCALE);
+ }
+ else {
+ pango_xft_render_layout(d, &c, t->font->layout,
+ x * PANGO_SCALE,
+ y * PANGO_SCALE);
+ }
- g_string_free(text, TRUE);
- return;
+ 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);
+ }
}
projects / mikachu / openbox.git / blobdiff