/* Pango * pango-layout.h: High-level layout driver * * Copyright (C) 2000 Red Hat Software * * 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. */ #ifndef __PANGO_LAYOUT_H__ #define __PANGO_LAYOUT_H__ #include #include #include #include G_BEGIN_DECLS typedef struct _PangoLayout PangoLayout; typedef struct _PangoLayoutClass PangoLayoutClass; typedef struct _PangoLayoutLine PangoLayoutLine; /** * PangoLayoutRun: * * The #PangoLayoutRun structure represents a single run within * a #PangoLayoutLine; it is simply an alternate name for * #PangoGlyphItem. * See the #PangoGlyphItem docs for details on the fields. */ typedef PangoGlyphItem PangoLayoutRun; /** * PangoAlignment: * @PANGO_ALIGN_LEFT: Put all available space on the right * @PANGO_ALIGN_CENTER: Center the line within the available space * @PANGO_ALIGN_RIGHT: Put all available space on the left * * A #PangoAlignment describes how to align the lines of a #PangoLayout within the * available space. If the #PangoLayout is set to justify * using pango_layout_set_justify(), this only has effect for partial lines. */ typedef enum { PANGO_ALIGN_LEFT, PANGO_ALIGN_CENTER, PANGO_ALIGN_RIGHT } PangoAlignment; /** * PangoWrapMode: * @PANGO_WRAP_WORD: wrap lines at word boundaries. * @PANGO_WRAP_CHAR: wrap lines at character boundaries. * @PANGO_WRAP_WORD_CHAR: wrap lines at word boundaries, but fall back to character boundaries if there is not * enough space for a full word. * * A #PangoWrapMode describes how to wrap the lines of a #PangoLayout to the desired width. */ typedef enum { PANGO_WRAP_WORD, PANGO_WRAP_CHAR, PANGO_WRAP_WORD_CHAR } PangoWrapMode; /** * PangoEllipsizeMode: * @PANGO_ELLIPSIZE_NONE: No ellipsization * @PANGO_ELLIPSIZE_START: Omit characters at the start of the text * @PANGO_ELLIPSIZE_MIDDLE: Omit characters in the middle of the text * @PANGO_ELLIPSIZE_END: Omit characters at the end of the text * * The #PangoEllipsizeMode type describes what sort of (if any) * ellipsization should be applied to a line of text. In * the ellipsization process characters are removed from the * text in order to make it fit to a given width and replaced * with an ellipsis. */ typedef enum { PANGO_ELLIPSIZE_NONE, PANGO_ELLIPSIZE_START, PANGO_ELLIPSIZE_MIDDLE, PANGO_ELLIPSIZE_END } PangoEllipsizeMode; /** * PangoLayoutLine: * @layout: (allow-none): the layout this line belongs to, might be %NULL * @start_index: start of line as byte index into layout->text * @length: length of line in bytes * @runs: (allow-none) (element-type Pango.LayoutRun): list of runs in the * line, from left to right * @is_paragraph_start: #TRUE if this is the first line of the paragraph * @resolved_dir: #Resolved PangoDirection of line * * The #PangoLayoutLine structure represents one of the lines resulting * from laying out a paragraph via #PangoLayout. #PangoLayoutLine * structures are obtained by calling pango_layout_get_line() and * are only valid until the text, attributes, or settings of the * parent #PangoLayout are modified. * * Routines for rendering PangoLayout objects are provided in * code specific to each rendering system. */ struct _PangoLayoutLine { PangoLayout *layout; gint start_index; /* start of line as byte index into layout->text */ gint length; /* length of line in bytes */ GSList *runs; guint is_paragraph_start : 1; /* TRUE if this is the first line of the paragraph */ guint resolved_dir : 3; /* Resolved PangoDirection of line */ }; #define PANGO_TYPE_LAYOUT (pango_layout_get_type ()) #define PANGO_LAYOUT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_LAYOUT, PangoLayout)) #define PANGO_LAYOUT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_LAYOUT, PangoLayoutClass)) #define PANGO_IS_LAYOUT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_LAYOUT)) #define PANGO_IS_LAYOUT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_LAYOUT)) #define PANGO_LAYOUT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_LAYOUT, PangoLayoutClass)) /* The PangoLayout and PangoLayoutClass structs are private; if you * need to create a subclass of these, file a bug. */ PANGO_AVAILABLE_IN_ALL GType pango_layout_get_type (void) G_GNUC_CONST; PANGO_AVAILABLE_IN_ALL PangoLayout *pango_layout_new (PangoContext *context); PANGO_AVAILABLE_IN_ALL PangoLayout *pango_layout_copy (PangoLayout *src); PANGO_AVAILABLE_IN_ALL PangoContext *pango_layout_get_context (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_attributes (PangoLayout *layout, PangoAttrList *attrs); PANGO_AVAILABLE_IN_ALL PangoAttrList *pango_layout_get_attributes (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_text (PangoLayout *layout, const char *text, int length); PANGO_AVAILABLE_IN_ALL const char *pango_layout_get_text (PangoLayout *layout); PANGO_AVAILABLE_IN_1_30 gint pango_layout_get_character_count (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_markup (PangoLayout *layout, const char *markup, int length); PANGO_AVAILABLE_IN_ALL void pango_layout_set_markup_with_accel (PangoLayout *layout, const char *markup, int length, gunichar accel_marker, gunichar *accel_char); PANGO_AVAILABLE_IN_ALL void pango_layout_set_font_description (PangoLayout *layout, const PangoFontDescription *desc); PANGO_AVAILABLE_IN_1_8 const PangoFontDescription *pango_layout_get_font_description (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_width (PangoLayout *layout, int width); PANGO_AVAILABLE_IN_ALL int pango_layout_get_width (PangoLayout *layout); PANGO_AVAILABLE_IN_1_20 void pango_layout_set_height (PangoLayout *layout, int height); PANGO_AVAILABLE_IN_1_20 int pango_layout_get_height (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_wrap (PangoLayout *layout, PangoWrapMode wrap); PANGO_AVAILABLE_IN_ALL PangoWrapMode pango_layout_get_wrap (PangoLayout *layout); PANGO_AVAILABLE_IN_1_16 gboolean pango_layout_is_wrapped (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_indent (PangoLayout *layout, int indent); PANGO_AVAILABLE_IN_ALL int pango_layout_get_indent (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_spacing (PangoLayout *layout, int spacing); PANGO_AVAILABLE_IN_ALL int pango_layout_get_spacing (PangoLayout *layout); PANGO_AVAILABLE_IN_1_44 void pango_layout_set_line_spacing (PangoLayout *layout, float spread); PANGO_AVAILABLE_IN_1_44 float pango_layout_get_line_spacing (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_justify (PangoLayout *layout, gboolean justify); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_get_justify (PangoLayout *layout); PANGO_AVAILABLE_IN_1_4 void pango_layout_set_auto_dir (PangoLayout *layout, gboolean auto_dir); PANGO_AVAILABLE_IN_1_4 gboolean pango_layout_get_auto_dir (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_alignment (PangoLayout *layout, PangoAlignment alignment); PANGO_AVAILABLE_IN_ALL PangoAlignment pango_layout_get_alignment (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_tabs (PangoLayout *layout, PangoTabArray *tabs); PANGO_AVAILABLE_IN_ALL PangoTabArray* pango_layout_get_tabs (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_set_single_paragraph_mode (PangoLayout *layout, gboolean setting); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_get_single_paragraph_mode (PangoLayout *layout); PANGO_AVAILABLE_IN_1_6 void pango_layout_set_ellipsize (PangoLayout *layout, PangoEllipsizeMode ellipsize); PANGO_AVAILABLE_IN_1_6 PangoEllipsizeMode pango_layout_get_ellipsize (PangoLayout *layout); PANGO_AVAILABLE_IN_1_16 gboolean pango_layout_is_ellipsized (PangoLayout *layout); PANGO_AVAILABLE_IN_1_16 int pango_layout_get_unknown_glyphs_count (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_context_changed (PangoLayout *layout); PANGO_AVAILABLE_IN_1_32 guint pango_layout_get_serial (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL void pango_layout_get_log_attrs (PangoLayout *layout, PangoLogAttr **attrs, gint *n_attrs); PANGO_AVAILABLE_IN_1_30 const PangoLogAttr *pango_layout_get_log_attrs_readonly (PangoLayout *layout, gint *n_attrs); PANGO_AVAILABLE_IN_ALL void pango_layout_index_to_pos (PangoLayout *layout, int index_, PangoRectangle *pos); PANGO_AVAILABLE_IN_ALL void pango_layout_index_to_line_x (PangoLayout *layout, int index_, gboolean trailing, int *line, int *x_pos); PANGO_AVAILABLE_IN_ALL void pango_layout_get_cursor_pos (PangoLayout *layout, int index_, PangoRectangle *strong_pos, PangoRectangle *weak_pos); PANGO_AVAILABLE_IN_ALL void pango_layout_move_cursor_visually (PangoLayout *layout, gboolean strong, int old_index, int old_trailing, int direction, int *new_index, int *new_trailing); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_xy_to_index (PangoLayout *layout, int x, int y, int *index_, int *trailing); PANGO_AVAILABLE_IN_ALL void pango_layout_get_extents (PangoLayout *layout, PangoRectangle *ink_rect, PangoRectangle *logical_rect); PANGO_AVAILABLE_IN_ALL void pango_layout_get_pixel_extents (PangoLayout *layout, PangoRectangle *ink_rect, PangoRectangle *logical_rect); PANGO_AVAILABLE_IN_ALL void pango_layout_get_size (PangoLayout *layout, int *width, int *height); PANGO_AVAILABLE_IN_ALL void pango_layout_get_pixel_size (PangoLayout *layout, int *width, int *height); PANGO_AVAILABLE_IN_1_22 int pango_layout_get_baseline (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL int pango_layout_get_line_count (PangoLayout *layout); PANGO_AVAILABLE_IN_ALL PangoLayoutLine *pango_layout_get_line (PangoLayout *layout, int line); PANGO_AVAILABLE_IN_1_16 PangoLayoutLine *pango_layout_get_line_readonly (PangoLayout *layout, int line); PANGO_AVAILABLE_IN_ALL GSList * pango_layout_get_lines (PangoLayout *layout); PANGO_AVAILABLE_IN_1_16 GSList * pango_layout_get_lines_readonly (PangoLayout *layout); #define PANGO_TYPE_LAYOUT_LINE (pango_layout_line_get_type ()) PANGO_AVAILABLE_IN_ALL GType pango_layout_line_get_type (void) G_GNUC_CONST; PANGO_AVAILABLE_IN_1_10 PangoLayoutLine *pango_layout_line_ref (PangoLayoutLine *line); PANGO_AVAILABLE_IN_ALL void pango_layout_line_unref (PangoLayoutLine *line); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_line_x_to_index (PangoLayoutLine *line, int x_pos, int *index_, int *trailing); PANGO_AVAILABLE_IN_ALL void pango_layout_line_index_to_x (PangoLayoutLine *line, int index_, gboolean trailing, int *x_pos); PANGO_AVAILABLE_IN_ALL void pango_layout_line_get_x_ranges (PangoLayoutLine *line, int start_index, int end_index, int **ranges, int *n_ranges); PANGO_AVAILABLE_IN_ALL void pango_layout_line_get_extents (PangoLayoutLine *line, PangoRectangle *ink_rect, PangoRectangle *logical_rect); PANGO_AVAILABLE_IN_1_44 void pango_layout_line_get_height (PangoLayoutLine *line, int *height); PANGO_AVAILABLE_IN_ALL void pango_layout_line_get_pixel_extents (PangoLayoutLine *layout_line, PangoRectangle *ink_rect, PangoRectangle *logical_rect); typedef struct _PangoLayoutIter PangoLayoutIter; #define PANGO_TYPE_LAYOUT_ITER (pango_layout_iter_get_type ()) PANGO_AVAILABLE_IN_ALL GType pango_layout_iter_get_type (void) G_GNUC_CONST; PANGO_AVAILABLE_IN_ALL PangoLayoutIter *pango_layout_get_iter (PangoLayout *layout); PANGO_AVAILABLE_IN_1_20 PangoLayoutIter *pango_layout_iter_copy (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL void pango_layout_iter_free (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL int pango_layout_iter_get_index (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL PangoLayoutRun *pango_layout_iter_get_run (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_1_16 PangoLayoutRun *pango_layout_iter_get_run_readonly (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL PangoLayoutLine *pango_layout_iter_get_line (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_1_16 PangoLayoutLine *pango_layout_iter_get_line_readonly (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_iter_at_last_line (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_1_20 PangoLayout *pango_layout_iter_get_layout (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_iter_next_char (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_iter_next_cluster (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_iter_next_run (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL gboolean pango_layout_iter_next_line (PangoLayoutIter *iter); PANGO_AVAILABLE_IN_ALL void pango_layout_iter_get_char_extents (PangoLayoutIter *iter, PangoRectangle *logical_rect); PANGO_AVAILABLE_IN_ALL void pango_layout_iter_get_cluster_extents (PangoLayoutIter *iter, PangoRectangle *ink_rect, PangoRectangle *logical_rect); PANGO_AVAILABLE_IN_ALL void pango_layout_iter_get_run_extents (PangoLayoutIter *iter, PangoRectangle *ink_rect, PangoRectangle *logical_rect); PANGO_AVAILABLE_IN_ALL void pango_layout_iter_get_line_extents (PangoLayoutIter *iter, PangoRectangle *ink_rect, PangoRectangle *logical_rect); /* All the yranges meet, unlike the logical_rect's (i.e. the yranges * assign between-line spacing to the nearest line) */ PANGO_AVAILABLE_IN_ALL void pango_layout_iter_get_line_yrange (PangoLayoutIter *iter, int *y0_, int *y1_); PANGO_AVAILABLE_IN_ALL void pango_layout_iter_get_layout_extents (PangoLayoutIter *iter, PangoRectangle *ink_rect, PangoRectangle *logical_rect); PANGO_AVAILABLE_IN_ALL int pango_layout_iter_get_baseline (PangoLayoutIter *iter); G_END_DECLS #endif /* __PANGO_LAYOUT_H__ */