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authorAnders Carlsson <andersca@imendio.com>2005-11-22 09:12:05 +0000
committerAnders Carlsson <andersca@src.gnome.org>2005-11-22 09:12:05 +0000
commitc830201fcd8fb1d63c20fcefc70d36c24e54187d (patch)
tree4c4bc101cec5be62b2c7d24a57dd001ed815fa74 /pango/pangocairo-atsuifont.c
parenta319318a43a3b85d349d22ba8a0a1e1cbda61ac9 (diff)
downloadpango-c830201fcd8fb1d63c20fcefc70d36c24e54187d.tar.gz
Add checks for ATSUI.
2005-11-21 Anders Carlsson <andersca@imendio.com> * configure.in: Add checks for ATSUI. * examples/Makefile.am: Only build pango-cairoview if freetype is detected. * modules/basic/Makefile.am: Add basic ATSUI module. * pango/Makefile.am: Add ATSUI files for cairo backend. * pango/pangocairo-fontmap.c: (pango_cairo_font_map_new): Support creating ATSUI font maps here. * pango/pangoatsui-fontmap.c: * pango/pangoatsui-private.h: * pango/pangoatsui.c: * pango/pangoatsui.h: * pango/pangocairo-atsui.h: * pango/pangocairo-atsuifont.c: * pango/pangocairo-atsuifont.h: * pango/pangocairo-atsuifontmap.c: Add.
Diffstat (limited to 'pango/pangocairo-atsuifont.c')
-rw-r--r--pango/pangocairo-atsuifont.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/pango/pangocairo-atsuifont.c b/pango/pangocairo-atsuifont.c
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+++ b/pango/pangocairo-atsuifont.c
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+/* Pango
+ * pangocairo-atsuifont.c
+ *
+ * Copyright (C) 2000-2005 Red Hat Software
+ * Copyright (C) 2005 Imendio AB
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "pangoatsui-private.h"
+#include "pangocairo.h"
+#include "pangocairo-private.h"
+#include "pangocairo-atsui.h"
+#include "pangocairo-atsuifont.h"
+
+struct _PangoCairoATSUIFont
+{
+ PangoATSUIFont font;
+
+ ATSUFontID font_id;
+ cairo_font_face_t *font_face;
+ cairo_scaled_font_t *scaled_font;
+ cairo_matrix_t font_matrix;
+ cairo_matrix_t ctm;
+ cairo_font_options_t *options;
+
+ double size;
+};
+
+struct _PangoCairoATSUIFontClass
+{
+ PangoATSUIFontClass parent_class;
+};
+
+
+
+static cairo_font_face_t *pango_cairo_atsui_font_get_font_face (PangoCairoFont *font);
+
+ATSUFontID
+pango_cairo_atsui_font_get_atsu_font_id (PangoCairoATSUIFont *cafont)
+{
+ return cafont->font_id;
+}
+
+static void
+pango_cairo_atsui_font_install (PangoCairoFont *font,
+ cairo_t *cr)
+{
+ PangoCairoATSUIFont *cwfont = PANGO_CAIRO_ATSUI_FONT (font);
+
+ cairo_set_font_face (cr,
+ pango_cairo_atsui_font_get_font_face (font));
+
+ cairo_set_font_matrix (cr, &cwfont->font_matrix);
+ cairo_set_font_options (cr, cwfont->options);
+}
+
+static void
+cairo_font_iface_init (PangoCairoFontIface *iface)
+{
+ iface->install = pango_cairo_atsui_font_install;
+}
+
+G_DEFINE_TYPE_WITH_CODE (PangoCairoATSUIFont, pango_cairo_atsui_font, PANGO_TYPE_ATSUI_FONT,
+ { G_IMPLEMENT_INTERFACE (PANGO_TYPE_CAIRO_FONT, cairo_font_iface_init) });
+
+static cairo_font_face_t *
+pango_cairo_atsui_font_get_font_face (PangoCairoFont *font)
+{
+ PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
+
+ if (!cafont->font_face)
+ {
+ cafont->font_face = cairo_atsui_font_face_create_for_atsu_font_id (cafont->font_id);
+ }
+
+ return cafont->font_face;
+}
+
+static cairo_scaled_font_t *
+pango_cairo_atsui_font_get_scaled_font (PangoCairoFont *font)
+{
+ PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
+
+ if (!cafont->scaled_font)
+ {
+ cairo_font_face_t *font_face;
+
+ font_face = pango_cairo_atsui_font_get_font_face (font);
+ cafont->scaled_font = cairo_scaled_font_create (font_face,
+ &cafont->font_matrix,
+ &cafont->ctm,
+ cafont->options);
+
+ /* Failure of the above should only occur for out of memory,
+ * we can't proceed at that point
+ */
+ if (!cafont->scaled_font)
+ g_error ("Unable create Cairo font");
+ }
+
+ return cafont->scaled_font;
+}
+
+static void
+pango_cairo_atsui_font_get_glyph_extents (PangoFont *font,
+ PangoGlyph glyph,
+ PangoRectangle *ink_rect,
+ PangoRectangle *logical_rect)
+{
+ cairo_scaled_font_t *scaled_font;
+ cairo_text_extents_t extents;
+ cairo_glyph_t cairo_glyph;
+
+ scaled_font = pango_cairo_atsui_font_get_scaled_font (PANGO_CAIRO_FONT (font));
+
+ cairo_glyph.index = glyph;
+ cairo_glyph.x = 0;
+ cairo_glyph.y = 0;
+
+ cairo_scaled_font_glyph_extents (scaled_font,
+ &cairo_glyph, 1, &extents);
+
+ if (ink_rect)
+ {
+ ink_rect->x = extents.x_bearing * PANGO_SCALE;
+ ink_rect->y = extents.y_bearing * PANGO_SCALE;
+ ink_rect->width = extents.width * PANGO_SCALE;
+ ink_rect->height = extents.height * PANGO_SCALE;
+ }
+
+ if (logical_rect)
+ {
+ cairo_font_extents_t font_extents;
+
+ cairo_scaled_font_extents (scaled_font, &font_extents);
+
+ logical_rect->x = 0;
+ logical_rect->y = - font_extents.ascent * PANGO_SCALE;
+ logical_rect->width = extents.x_advance * PANGO_SCALE;
+ logical_rect->height = (font_extents.ascent + font_extents.descent) * PANGO_SCALE;
+ }
+}
+
+
+static PangoFontMetrics *
+pango_cairo_atsui_font_get_metrics (PangoFont *font,
+ PangoLanguage *language)
+{
+ PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
+ ATSFontRef ats_font;
+ ATSFontMetrics ats_metrics;
+ PangoFontMetrics *metrics;
+
+ ats_font = FMGetATSFontRefFromFont(cafont->font_id);
+
+ ATSFontGetHorizontalMetrics (ats_font, kATSOptionFlagsDefault, &ats_metrics);
+
+ metrics = pango_font_metrics_new ();
+
+ metrics->ascent = ats_metrics.ascent * cafont->size * PANGO_SCALE;
+ metrics->descent = -ats_metrics.descent * cafont->size * PANGO_SCALE;
+
+ metrics->approximate_char_width = ats_metrics.avgAdvanceWidth * cafont->size * PANGO_SCALE;
+ metrics->approximate_digit_width = ats_metrics.avgAdvanceWidth * cafont->size * PANGO_SCALE;
+
+ metrics->underline_position = ats_metrics.underlinePosition * cafont->size * PANGO_SCALE;
+ metrics->underline_thickness = ats_metrics.underlineThickness * cafont->size * PANGO_SCALE;
+
+ metrics->strikethrough_position = metrics->ascent / 3;
+ metrics->strikethrough_thickness = ats_metrics.underlineThickness * cafont->size * PANGO_SCALE;
+
+ return metrics;
+}
+
+static void
+pango_cairo_atsui_font_finalize (GObject *object)
+{
+ PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (object);
+
+ cairo_font_face_destroy (cafont->font_face);
+ cairo_scaled_font_destroy (cafont->scaled_font);
+ cairo_font_options_destroy (cafont->options);
+
+ G_OBJECT_CLASS (pango_cairo_atsui_font_parent_class)->finalize (object);
+}
+
+static void
+pango_cairo_atsui_font_class_init (PangoCairoATSUIFontClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+ PangoFontClass *font_class = PANGO_FONT_CLASS (class);
+
+ object_class->finalize = pango_cairo_atsui_font_finalize;
+
+ font_class->get_metrics = pango_cairo_atsui_font_get_metrics;
+ font_class->get_glyph_extents = pango_cairo_atsui_font_get_glyph_extents;
+}
+
+static void
+pango_cairo_atsui_font_init (PangoCairoATSUIFont *cafont)
+{
+}
+
+PangoATSUIFont *
+_pango_cairo_atsui_font_new (PangoCairoATSUIFontMap *cafontmap,
+ PangoContext *context,
+ const char *postscript_name,
+ const PangoFontDescription *desc)
+{
+ PangoCairoATSUIFont *cafont;
+ PangoATSUIFont *afont;
+ CFStringRef cfstr;
+ ATSFontRef font_ref;
+ const PangoMatrix *pango_ctm;
+ ATSUFontID font_id;
+
+ cfstr = CFStringCreateWithCString (NULL, postscript_name,
+ kCFStringEncodingUTF8);
+
+ font_ref = ATSFontFindFromPostScriptName (cfstr, kATSOptionFlagsDefault);
+ font_id = FMGetFontFromATSFontRef (font_ref);
+
+ CFRelease (cfstr);
+
+ if (!font_id)
+ return NULL;
+
+ cafont = g_object_new (PANGO_TYPE_CAIRO_ATSUI_FONT, NULL);
+ afont = PANGO_ATSUI_FONT (cafont);
+
+ afont->desc = pango_font_description_copy (desc);
+ afont->postscript_name = g_strdup (postscript_name);
+
+ cafont->size = (double) pango_font_description_get_size (desc) / PANGO_SCALE;
+ cafont->font_id = font_id;
+
+ if (!pango_font_description_get_size_is_absolute (desc))
+ {
+ /* FIXME: Need to handle dpi here. See other font implementations for more info. */
+ }
+
+ cairo_matrix_init_scale (&cafont->font_matrix, cafont->size, cafont->size);
+ pango_ctm = pango_context_get_matrix (context);
+ if (pango_ctm)
+ cairo_matrix_init (&cafont->ctm,
+ pango_ctm->xx,
+ pango_ctm->yx,
+ pango_ctm->xy,
+ pango_ctm->yy,
+ 0., 0.);
+ else
+ cairo_matrix_init_identity (&cafont->ctm);
+
+ cafont->options = cairo_font_options_copy (_pango_cairo_context_get_merged_font_options (context));
+
+ return afont;
+}