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/* Pango |
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* pangoopengl.h: OpenGL/Freetype2 backend |
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* |
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* Copyright (C) 1999 Red Hat Software |
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* Copyright (C) 2000 Tor Lillqvist |
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* Copyright (C) 2006 Marc Lehmann <pcg@goof.com> |
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* |
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* This file is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This file is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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|
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#ifndef PANGOOPENGL_H__ |
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#define PANGOOPENGL_H__ |
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|
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#include <glib-object.h> |
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|
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#include <fontconfig/fontconfig.h> |
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|
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#include <pango/pango-layout.h> |
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#include <pango/pangofc-font.h> |
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|
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G_BEGIN_DECLS |
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|
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#define PANGO_TYPE_OPENGL_FONT_MAP (pango_opengl_font_map_get_type ()) |
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#define PANGO_OPENGL_FONT_MAP(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_FONT_MAP, PangoOpenGLFontMap)) |
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#define PANGO_OPENGL_IS_FONT_MAP(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_FONT_MAP)) |
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|
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typedef struct _PangoOpenGLFontMap PangoOpenGLFontMap; |
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typedef struct _PangoOpenGLFont PangoOpenGLFont; |
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typedef struct _PangoOpenGLGlyphInfo PangoOpenGLGlyphInfo; |
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typedef struct _PangoOpenGLRenderer PangoOpenGLRenderer; |
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typedef struct _PangoOpenGLFontMapClass PangoOpenGLFontMapClass; |
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|
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typedef void (*PangoOpenGLSubstituteFunc) (FcPattern *pattern, gpointer data); |
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|
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#define FLAG_INVERSE 1 |
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#define FLAG_OUTLINE 2 // not yet implemented |
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|
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/* Calls for applications */ |
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|
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void |
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pango_opengl_render_layout_subpixel (PangoLayout *layout, |
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int x, int y, |
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float r, float g, float b, float a, |
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int flags); |
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|
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void |
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pango_opengl_render_layout (PangoLayout *layout, |
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int x, int y, |
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float r, float g, float b, float a, |
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int flags); |
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|
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GType pango_opengl_font_map_get_type (void); |
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|
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PangoFontMap *pango_opengl_font_map_new (void); |
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void pango_opengl_font_map_set_default_substitute (PangoOpenGLFontMap *fontmap, |
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PangoOpenGLSubstituteFunc func, |
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gpointer data, |
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GDestroyNotify notify); |
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void pango_opengl_font_map_substitute_changed (PangoOpenGLFontMap *fontmap); |
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PangoContext *pango_opengl_font_map_create_context (PangoOpenGLFontMap *fontmap); |
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|
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struct _PangoOpenGLFont |
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{ |
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PangoFcFont font; |
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|
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FT_Face face; |
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int load_flags; |
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|
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int size; |
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|
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GSList *metrics_by_lang; |
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|
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GHashTable *glyph_info; |
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GDestroyNotify glyph_cache_destroy; |
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}; |
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|
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struct _PangoOpenGLGlyphInfo |
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{ |
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PangoRectangle logical_rect; |
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PangoRectangle ink_rect; |
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void *cached_glyph; |
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}; |
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|
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#define PANGO_TYPE_OPENGL_FONT (pango_opengl_font_get_type ()) |
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#define PANGO_OPENGL_FONT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_FONT, PangoOpenGLFont)) |
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#define PANGO_OPENGL_IS_FONT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_FONT)) |
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|
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#define PANGO_SCALE_26_6 (PANGO_SCALE / (1<<6)) |
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#define PANGO_PIXELS_26_6(d) \ |
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(((d) >= 0) ? \ |
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((d) + PANGO_SCALE_26_6 / 2) / PANGO_SCALE_26_6 : \ |
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((d) - PANGO_SCALE_26_6 / 2) / PANGO_SCALE_26_6) |
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#define PANGO_UNITS_26_6(d) (PANGO_SCALE_26_6 * (d)) |
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|
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GType pango_opengl_font_get_type (void); |
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|
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PangoOpenGLFont *_pango_opengl_font_new (PangoOpenGLFontMap *fontmap, FcPattern *pattern); |
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FT_Library _pango_opengl_font_map_get_library (PangoFontMap *fontmap); |
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|
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void *_pango_opengl_font_get_cache_glyph_data (PangoFont *font, int glyph_index); |
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void _pango_opengl_font_set_cache_glyph_data (PangoFont *font, int glyph_index, void *cached_glyph); |
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void _pango_opengl_font_set_glyph_cache_destroy (PangoFont *font, GDestroyNotify destroy_notify); |
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|
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#define PANGO_TYPE_OPENGL_RENDERER (pango_opengl_renderer_get_type()) |
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#define PANGO_OPENGL_RENDERER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_RENDERER, PangoOpenGLRenderer)) |
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#define PANGO_IS_OPENGL_RENDERER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_RENDERER)) |
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|
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GType pango_opengl_renderer_get_type (void); |
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|
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PangoRenderer *_pango_opengl_font_map_get_renderer (PangoOpenGLFontMap *fontmap); |
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|
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// ERROR/TODO: this is not public. this means we have to reimplement |
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// not just all of pangoft2, but all of pangofc. Whats the point |
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// of adding 3 layers of abstractions if you can't extend it in any way? |
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void pango_fc_font_get_raw_extents (PangoFcFont *font, FT_Int32 load_flags, PangoGlyph glyph, PangoRectangle *ink_rect, PangoRectangle *logical_rect); |
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|
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G_END_DECLS |
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|
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#endif |