/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ /* nautilus-scalable-font.h - A GtkObject subclass for access to scalable fonts. Copyright (C) 1999, 2000 Eazel, Inc. The Gnome 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. The Gnome 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 the Gnome Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Authors: Ramiro Estrugo */ /* NautilusScalableFont is a GtkObject that provdes a simple * interface to Raph Levien's librsvg FreeType2 based anti aliased * text rendering. * * Currently, only Type1 fonts are supported. * * Fonts are automatically queried and used if available. Right * now this is fairly simple code which does not handle all the * complexities of the hell that is unix fonts. * * In the Star Trek future, we will use gnome-print (gnome-font?). * However, we will keep the interface to scalable font usage simple * and hidden behind this interface. */ #ifndef NAUTILUS_SCALABLE_FONT_H #define NAUTILUS_SCALABLE_FONT_H #include #include #include #include #include BEGIN_GNOME_DECLS #define NAUTILUS_TYPE_SCALABLE_FONT (nautilus_scalable_font_get_type ()) #define NAUTILUS_SCALABLE_FONT(obj) (GTK_CHECK_CAST ((obj), NAUTILUS_TYPE_SCALABLE_FONT, NautilusScalableFont)) #define NAUTILUS_SCALABLE_FONT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), NAUTILUS_TYPE_SCALABLE_FONT, NautilusScalableFontClass)) #define NAUTILUS_IS_SCALABLE_FONT(obj) (GTK_CHECK_TYPE ((obj), NAUTILUS_TYPE_SCALABLE_FONT)) #define NAUTILUS_IS_SCALABLE_FONT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), NAUTILUS_TYPE_SCALABLE_FONT)) typedef struct _NautilusScalableFont NautilusScalableFont; typedef struct _NautilusScalableFontClass NautilusScalableFontClass; typedef struct _NautilusScalableFontDetail NautilusScalableFontDetail; struct _NautilusScalableFont { /* Superclass */ GtkObject object; /* Private things */ NautilusScalableFontDetail *detail; }; struct _NautilusScalableFontClass { GtkObjectClass parent_class; }; GtkType nautilus_scalable_font_get_type (void); GtkObject * nautilus_scalable_font_new (const char *family, const char *weight, const char *slant, const char *set_width); void nautilus_scalable_font_measure_text (const NautilusScalableFont *font, guint font_width, guint font_height, const char *text, guint text_length, guint *text_width_out, guint *text_height_out); guint nautilus_scalable_font_text_width (const NautilusScalableFont *font, guint font_width, guint font_height, const char *text, guint text_length); void nautilus_scalable_font_draw_text (const NautilusScalableFont *font, GdkPixbuf *destination_pixbuf, int x, int y, const ArtIRect *clip_area, guint font_width, guint font_height, const char *text, guint text_length, guint32 color, guchar overall_alpha); void nautilus_scalable_font_measure_text_lines (const NautilusScalableFont *font, guint font_width, guint font_height, const char *text, guint num_text_lines, double empty_line_height, guint text_line_widths[], guint text_line_heights[], guint *max_width_out, guint *total_height_out); void nautilus_scalable_font_draw_text_lines_with_dimensions (const NautilusScalableFont *font, GdkPixbuf *destination_pixbuf, int x, int y, const ArtIRect *clip_area, guint font_width, guint font_height, const char *text, guint num_text_lines, const guint *text_line_widths, const guint *text_line_heights, GtkJustification justification, guint line_offset, double empty_line_height, guint32 color, guchar overall_alpha); void nautilus_scalable_font_draw_text_lines (const NautilusScalableFont *font, GdkPixbuf *destination_pixbuf, int x, int y, const ArtIRect *clip_area, guint font_width, guint font_height, const char *text, GtkJustification justification, guint line_offset, double empty_line_height, guint32 color, guchar overall_alpha); guint nautilus_scalable_font_largest_fitting_font_size (const NautilusScalableFont *font, const char *text, guint available_width, const guint font_sizes[], guint num_font_sizes); NautilusScalableFont *nautilus_scalable_font_get_default_font (void); NautilusStringList * nautilus_scalable_font_get_font_family_list (void); gboolean nautilus_scalable_font_query_font (const char *family, NautilusStringList **weights, NautilusStringList **slants, NautilusStringList **set_widths); gboolean nautilus_scalable_font_query_font (const char *family, NautilusStringList **weights, NautilusStringList **slants, NautilusStringList **set_widths); GdkPixbuf * nautilus_gdk_pixbuf_new_from_text (const NautilusScalableFont *font, guint font_width, guint font_height, const char *text, guint text_length, guint32 color, guchar overall_alpha); /* * The following text_layout stuff was shamelessly plundered * from libgnomeui/gnome-icon-text.[ch] by Federico Mena. * * It was hacked to use NautilusScalableFont and GdkPixbuf * instead of GdkFont and GdkDrawable. We want to use the * same layout algorithm in Nautilus so that both the smooth * and not smooth text rendering cases have predictably * similar result. * * I also made some minor Nautilus-like style changes. -re */ typedef struct { char *text; int width; int text_length; } NautilusTextLayoutRow; typedef struct { GList *rows; const NautilusScalableFont *font; guint font_size; int width; int height; int baseline_skip; } NautilusTextLayout; NautilusTextLayout *nautilus_text_layout_new (const NautilusScalableFont *font, guint font_size, const char *text, const char *separators, guint max_width, gboolean confine); void nautilus_text_layout_paint (const NautilusTextLayout *text_info, GdkPixbuf *pixbuf, int x, int y, GtkJustification justification, guint32 color, gboolean underlined); void nautilus_text_layout_free (NautilusTextLayout *text_info); END_GNOME_DECLS #endif /* NAUTILUS_SCALABLE_FONT_H */