configure.ac | 18 ++
src/Makefile.am | 14 ++
src/hb-view.c | 342 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 374 insertions(+)
New commits:
commit 5353bf439c150492708ef9337078cfd73b83627b
Author: Behdad Esfahbod <beh...@behdad.org>
Date: Tue Feb 22 18:06:19 2011 -0500
Add initial hb-view tool
Currently doesn't handle script or direction.
diff --git a/configure.ac b/configure.ac
index 5ea1c79..3e83a38 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,6 +37,24 @@ if $have_glib; then
fi
AM_CONDITIONAL(HAVE_GLIB, $have_glib)
+PKG_CHECK_MODULES(CAIRO, cairo >= 1.8.0, have_cairo=true, have_cairo=false)
+if $have_cairo; then
+ AC_DEFINE(HAVE_CAIRO, 1, [Have cairo graphics library])
+fi
+AM_CONDITIONAL(HAVE_CAIRO, $have_cairo)
+
+PKG_CHECK_MODULES(CAIRO_PNG, cairo-png, have_cairo_png=true,
have_cairo_png=false)
+if $have_cairo_png; then
+ AC_DEFINE(HAVE_CAIRO_PNG, 1, [Have cairo-png support in cairo graphics
library])
+fi
+AM_CONDITIONAL(HAVE_CAIRO_PNG, $have_cairo_png)
+
+PKG_CHECK_MODULES(CAIRO_FT, cairo-ft, have_cairo_ft=true, have_cairo_ft=false)
+if $have_cairo_ft; then
+ AC_DEFINE(HAVE_CAIRO_FT, 1, [Have cairo-ft support in cairo graphics
library])
+fi
+AM_CONDITIONAL(HAVE_CAIRO_FT, $have_cairo_ft)
+
PKG_CHECK_MODULES(ICU, icu, have_icu=true, [
AC_CHECK_PROG([have_icu], [icu-config], [true], [false])
if $have_icu; then
diff --git a/src/Makefile.am b/src/Makefile.am
index 751465d..8e8319f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -110,6 +110,20 @@ GENERATORS = \
EXTRA_DIST += $(GENERATORS)
noinst_PROGRAMS = main test
+bin_PROGRAMS =
+
+if HAVE_GLIB
+if HAVE_FREETYPE
+if HAVE_CAIRO_FT
+if HAVE_CAIRO_PNG
+hb_view_SOURCES = hb-view.c
+hb_view_CPPFLAGS = $(HBCFLAGS) $(CAIRO_FT_CFLAGS) $(CAIRO_PNG_CFLAGS)
+hb_view_LDADD = libharfbuzz.la $(HBLIBS) $(CAIRO_FT_LIBS) $(CAIRO_PNG_LIBS)
+bin_PROGRAMS += hb-view
+endif
+endif
+endif
+endif
main_SOURCES = main.cc
main_CPPFLAGS = $(HBCFLAGS)
diff --git a/src/hb-view.c b/src/hb-view.c
new file mode 100644
index 0000000..c55c423
--- /dev/null
+++ b/src/hb-view.c
@@ -0,0 +1,342 @@
+/*
+ * Copyright (C) 2010 Behdad Esfahbod
+ * Copyright (C) 2011 Google, Inc.
+ *
+ * This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <unistd.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#include <glib.h>
+#include <hb-glib.h>
+
+#include <cairo-ft.h>
+#include <hb-ft.h>
+
+/* Controlled by cmd-line options */
+static int margin_t = 10;
+static int margin_b = 10;
+static int margin_l = 10;
+static int margin_r = 10;
+static int line_space = 0;
+static double font_size = 18;
+static const char *fore = "#000000";
+static const char *back = "#000000";
+static const char *text = NULL;
+static const char *font_file = NULL;
+static const char *out_file = "/dev/stdout";
+static const char *language = NULL;
+
+/* Ugh, global vars. Ugly, but does the job */
+static int width = 0;
+static int height = 0;
+static cairo_surface_t *surface = NULL;
+static cairo_pattern_t *fore_pattern = NULL;
+static cairo_pattern_t *back_pattern = NULL;
+static FT_Library ft_library;
+static FT_Face ft_face;
+static cairo_font_face_t *cairo_face;
+
+
+G_GNUC_NORETURN static void
+usage (FILE *f, int status)
+{
+ fprintf (f, "usage: hb-view [OPTS...] font-file text\n");
+ exit (status);
+}
+
+G_GNUC_NORETURN static void
+version (void)
+{
+ printf ("hb-view (harfbuzz) %s\n", PACKAGE_VERSION);
+ exit (0);
+}
+
+static void
+parse_opts (int argc, char **argv)
+{
+ argv[0] = (char *) "hb-view";
+ while (1)
+ {
+ int option_index = 0, c;
+ static struct option long_options[] = {
+ {"help", 0, 0, 'h'},
+ {"version", 0, 0, 'v'},
+ {"margin", 1, 0, 'm'},
+ {"line-space", 1, 0, 'l'},
+ {"font-size", 1, 0, 's'},
+ {"foreground", 1, 0, 'F'},
+ {"background", 1, 0, 'B'},
+ {"language", 1, 0, 'L'},
+ {"output", 1, 0, 'o'},
+ {0, 0, 0, 0}
+ };
+
+ c = getopt_long (argc, argv, "", long_options, &option_index);
+ if (c == -1)
+ break;
+
+ switch (c)
+ {
+ case 0:
+ break;
+ case 'h':
+ usage (stdout, 0);
+ break;
+ case 'v':
+ version ();
+ break;
+ case 'l':
+ line_space = atoi (optarg);
+ break;
+ case 'm':
+ switch (sscanf (optarg, "%d %d %d %d", &margin_t, &margin_r,
&margin_b, &margin_l)) {
+ case 1: margin_r = margin_t;
+ case 2: margin_b = margin_t;
+ case 3: margin_l = margin_r;
+ }
+ break;
+ case 's':
+ font_size = strtod (optarg, NULL);
+ break;
+ case 'f':
+ font_file = optarg;
+ break;
+ case 'F':
+ fore = optarg;
+ break;
+ case 'B':
+ back = optarg;
+ break;
+ case 't':
+ text = optarg;
+ break;
+ case 'L':
+ language = optarg;
+ break;
+ case 'o':
+ out_file = optarg;
+ break;
+ case '?':
+ usage (stdout, 1);
+ break;
+ default:
+ break;
+ }
+ }
+ if (optind + 2 != argc)
+ usage (stderr, 1);
+ font_file = argv[optind++];
+ text = argv[optind++];
+}
+
+
+
+static cairo_glyph_t *
+_hb_cr_text_glyphs (cairo_t *cr,
+ const char *text, int len,
+ unsigned int *pnum_glyphs)
+{
+ cairo_scaled_font_t *scaled_font = cairo_get_scaled_font (cr);
+ FT_Face ft_face = cairo_ft_scaled_font_lock_face (scaled_font);
+ hb_face_t *hb_face = hb_ft_face_create (ft_face, NULL);
+ hb_font_t *hb_font = hb_ft_font_create (ft_face, NULL);
+ hb_buffer_t *hb_buffer;
+ cairo_glyph_t *cairo_glyphs;
+ hb_glyph_info_t *hb_glyph;
+ hb_glyph_position_t *hb_position;
+ unsigned int num_glyphs, i;
+ hb_position_t x;
+
+ if (len < 0)
+ len = strlen (text);
+ hb_buffer = hb_buffer_create (len);
+
+ hb_buffer_set_unicode_funcs (hb_buffer, hb_glib_get_unicode_funcs ());
+
+ hb_buffer_add_utf8 (hb_buffer, text, len, 0, len);
+ /* hb_buffer_set_script (hb_buffer, HB_SCRIPT_LATIN); */
+ /* hb_buffer_set_direction (hb_buffer, HB_DIRECTION_LTR); */
+ hb_buffer_set_language (hb_buffer, hb_language_from_string (language));
+
+ hb_shape (hb_font, hb_face, hb_buffer, NULL, 0);
+
+ num_glyphs = hb_buffer_get_length (hb_buffer);
+ hb_glyph = hb_buffer_get_glyph_infos (hb_buffer);
+ hb_position = hb_buffer_get_glyph_positions (hb_buffer);
+ cairo_glyphs = cairo_glyph_allocate (num_glyphs + 1);
+ x = 0;
+ for (i = 0; i < num_glyphs; i++)
+ {
+ cairo_glyphs[i].index = hb_glyph->codepoint;
+ cairo_glyphs[i].x = (hb_position->x_offset + x) * (1./64);
+ cairo_glyphs[i].y = -(hb_position->y_offset) * (1./64);
+ x += hb_position->x_advance;
+
+ hb_glyph++;
+ hb_position++;
+ }
+ cairo_glyphs[i].x = x * (1./64);
+ hb_buffer_destroy (hb_buffer);
+ hb_font_destroy (hb_font);
+ hb_face_destroy (hb_face);
+ cairo_ft_scaled_font_unlock_face (scaled_font);
+
+ if (pnum_glyphs)
+ *pnum_glyphs = num_glyphs;
+ return cairo_glyphs;
+}
+
+static cairo_t *
+create_context (void)
+{
+ cairo_t *cr;
+ unsigned int fr, fg, fb, fa, br, bg, bb, ba;
+
+ if (surface)
+ cairo_surface_destroy (surface);
+ if (back_pattern)
+ cairo_pattern_destroy (back_pattern);
+ if (fore_pattern)
+ cairo_pattern_destroy (fore_pattern);
+
+ br = bg = bb = ba = 255;
+ sscanf (back + (*back=='#'), "%2x%2x%2x%2x", &br, &bg, &bb, &ba);
+ fr = fg = fb = 0; fa = 255;
+ sscanf (fore + (*fore=='#'), "%2x%2x%2x%2x", &fr, &fg, &fb, &fa);
+
+ if (ba == 255 && fa == 255 && br == bg && bg == bb && fr == fg && fg == fb) {
+ /* grayscale. use A8 surface */
+ surface = cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
+ cr = cairo_create (surface);
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ cairo_set_source_rgba (cr, 1., 1., 1., br / 255.);
+ cairo_paint (cr);
+ back_pattern = cairo_pattern_reference (cairo_get_source (cr));
+ cairo_set_source_rgba (cr, 1., 1., 1., fr / 255.);
+ fore_pattern = cairo_pattern_reference (cairo_get_source (cr));
+ } else {
+ /* color. use (A)RGB surface */
+ if (ba != 255)
+ surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width,
height);
+ else
+ surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
+ cr = cairo_create (surface);
+ cairo_set_source_rgba (cr, br / 255., bg / 255., bb / 255., ba / 255.);
+ cairo_paint (cr);
+ back_pattern = cairo_pattern_reference (cairo_get_source (cr));
+ cairo_set_source_rgba (cr, fr / 255., fg / 255., fb / 255., fa / 255.);
+ fore_pattern = cairo_pattern_reference (cairo_get_source (cr));
+ }
+
+ cairo_set_font_face (cr, cairo_face);
+
+ return cr;
+}
+
+static void
+draw (void)
+{
+ cairo_t *cr;
+ cairo_font_extents_t font_extents;
+
+ cairo_glyph_t *glyphs = NULL;
+ unsigned int num_glyphs = 0;
+
+ const char *end, *p = text;
+ double x, y;
+
+ cr= create_context ();
+
+ cairo_set_font_size (cr, font_size);
+ cairo_font_extents (cr, &font_extents);
+
+ height = 0;
+ width = 0;
+
+ x = margin_l;
+ y = margin_t;
+
+ do {
+ cairo_text_extents_t extents;
+
+ end = strchr (p, '\n');
+ if (!end)
+ end = p + strlen (p);
+
+ if (p != text)
+ y += line_space;
+
+ if (p != end) {
+ glyphs = _hb_cr_text_glyphs (cr, p, end - p, &num_glyphs);
+ cairo_glyph_extents (cr, glyphs, num_glyphs, &extents);
+
+ y += ceil (font_extents.ascent);
+ width = MAX (width, extents.x_advance);
+ cairo_save (cr);
+ cairo_translate (cr, x, y);
+ cairo_show_glyphs (cr, glyphs, num_glyphs);
+ cairo_restore (cr);
+ y += ceil (font_extents.height - ceil (font_extents.ascent));
+ cairo_glyph_free (glyphs);
+ }
+
+ p = end + 1;
+ } while (*end);
+
+ height = y + margin_b;
+ width += margin_l + margin_r;
+
+ cairo_destroy (cr);
+}
+
+
+
+int
+main (int argc, char **argv)
+{
+ parse_opts (argc, argv);
+
+ FT_Init_FreeType (&ft_library);
+ if (FT_New_Face (ft_library, font_file, 0, &ft_face)) {
+ fprintf (stderr, "Failed to open font file `%s'\n", font_file);
+ exit (1);
+ }
+ cairo_face = cairo_ft_font_face_create_for_ft_face (ft_face, 0);
+
+ draw ();
+ draw ();
+
+ cairo_surface_write_to_png (surface, out_file);
+
+ return 0;
+}
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