gtktextlayout.h

windows平台下开发gtk程序所需要的库和头文件等

};

struct _GtkTextAttrAppearance
{
  PangoAttribute attr;
  GtkTextAppearance appearance;
};
struct _GtkTextCursorDisplay
{
  gint x;
  gint y;
  gint height;
  guint is_strong : 1;
  guint is_weak : 1;
};
struct _GtkTextLineDisplay
{
  PangoLayout *layout;
  GSList *cursors;
  GSList *shaped_objects;	/* Only for backwards compatibility */
  
  GtkTextDirection direction;

  gint width;                   /* Width of layout */
  gint total_width;             /* width - margins, if no width set on layout, if width set on layout, -1 */
  gint height;
  /* Amount layout is shifted from left edge - this is the left margin
   * plus any other factors, such as alignment or indentation.
   */
  gint x_offset;
  gint left_margin;
  gint right_margin;
  gint top_margin;
  gint bottom_margin;
  gint insert_index;		/* Byte index of insert cursor within para or -1 */

  gboolean size_only;
  GtkTextLine *line;
  
  GdkColor *pg_bg_color;

  GdkRectangle block_cursor;
  guint cursors_invalid : 1;
  guint has_block_cursor : 1;
  guint cursor_at_line_end : 1;
};

extern PangoAttrType gtk_text_attr_appearance_type;

GType         gtk_text_layout_get_type    (void) G_GNUC_CONST;

GtkTextLayout*     gtk_text_layout_new                   (void);
void               gtk_text_layout_set_buffer            (GtkTextLayout     *layout,
							  GtkTextBuffer     *buffer);
GtkTextBuffer     *gtk_text_layout_get_buffer            (GtkTextLayout     *layout);
void               gtk_text_layout_set_default_style     (GtkTextLayout     *layout,
							  GtkTextAttributes *values);
void               gtk_text_layout_set_contexts          (GtkTextLayout     *layout,
							  PangoContext      *ltr_context,
							  PangoContext      *rtl_context);
void               gtk_text_layout_set_cursor_direction  (GtkTextLayout     *layout,
                                                          GtkTextDirection   direction);
void		   gtk_text_layout_set_overwrite_mode	 (GtkTextLayout     *layout,
							  gboolean           overwrite);
void               gtk_text_layout_set_keyboard_direction (GtkTextLayout     *layout,
							   GtkTextDirection keyboard_dir);
void               gtk_text_layout_default_style_changed (GtkTextLayout     *layout);

void gtk_text_layout_set_screen_width       (GtkTextLayout     *layout,
                                             gint               width);
void gtk_text_layout_set_preedit_string     (GtkTextLayout     *layout,
 					     const gchar       *preedit_string,
 					     PangoAttrList     *preedit_attrs,
 					     gint               cursor_pos);

void     gtk_text_layout_set_cursor_visible (GtkTextLayout     *layout,
                                             gboolean           cursor_visible);
gboolean gtk_text_layout_get_cursor_visible (GtkTextLayout     *layout);

/* Getting the size or the lines potentially results in a call to
 * recompute, which is pretty massively expensive. Thus it should
 * basically only be done in an idle handler.
 *
 * Long-term, we would really like to be able to do these without
 * a full recompute so they may get cheaper over time.
 */
void    gtk_text_layout_get_size  (GtkTextLayout  *layout,
                                   gint           *width,
                                   gint           *height);
GSList* gtk_text_layout_get_lines (GtkTextLayout  *layout,
                                   /* [top_y, bottom_y) */
                                   gint            top_y,
                                   gint            bottom_y,
                                   gint           *first_line_y);

void gtk_text_layout_wrap_loop_start (GtkTextLayout *layout);
void gtk_text_layout_wrap_loop_end   (GtkTextLayout *layout);

GtkTextLineDisplay* gtk_text_layout_get_line_display  (GtkTextLayout      *layout,
                                                       GtkTextLine        *line,
                                                       gboolean            size_only);
void                gtk_text_layout_free_line_display (GtkTextLayout      *layout,
                                                       GtkTextLineDisplay *display);

void gtk_text_layout_get_line_at_y     (GtkTextLayout     *layout,
                                        GtkTextIter       *target_iter,
                                        gint               y,
                                        gint              *line_top);
void gtk_text_layout_get_iter_at_pixel (GtkTextLayout     *layout,
                                        GtkTextIter       *iter,
                                        gint               x,
                                        gint               y);
void gtk_text_layout_get_iter_at_position (GtkTextLayout     *layout,
					   GtkTextIter       *iter,
					   gint              *trailing,
					   gint               x,
					   gint               y);
void gtk_text_layout_invalidate        (GtkTextLayout     *layout,
                                        const GtkTextIter *start,
                                        const GtkTextIter *end);
void gtk_text_layout_invalidate_cursors(GtkTextLayout     *layout,
                                        const GtkTextIter *start,
                                        const GtkTextIter *end);
void gtk_text_layout_free_line_data    (GtkTextLayout     *layout,
                                        GtkTextLine       *line,
                                        GtkTextLineData   *line_data);

gboolean gtk_text_layout_is_valid        (GtkTextLayout *layout);
void     gtk_text_layout_validate_yrange (GtkTextLayout *layout,
                                          GtkTextIter   *anchor_line,
                                          gint           y0_,
                                          gint           y1_);
void     gtk_text_layout_validate        (GtkTextLayout *layout,
                                          gint           max_pixels);

/* This function should return the passed-in line data,
 * OR remove the existing line data from the line, and
 * return a NEW line data after adding it to the line.
 * That is, invariant after calling the callback is that
 * there should be exactly one line data for this view
 * stored on the btree line.
 */
GtkTextLineData* gtk_text_layout_wrap  (GtkTextLayout   *layout,
                                        GtkTextLine     *line,
                                        GtkTextLineData *line_data); /* may be NULL */
void     gtk_text_layout_changed              (GtkTextLayout     *layout,
                                               gint               y,
                                               gint               old_height,
                                               gint               new_height);
void     gtk_text_layout_cursors_changed      (GtkTextLayout     *layout,
                                               gint               y,
                                               gint               old_height,
                                               gint               new_height);
void     gtk_text_layout_get_iter_location    (GtkTextLayout     *layout,
                                               const GtkTextIter *iter,
                                               GdkRectangle      *rect);
void     gtk_text_layout_get_line_yrange      (GtkTextLayout     *layout,
                                               const GtkTextIter *iter,
                                               gint              *y,
                                               gint              *height);
void     _gtk_text_layout_get_line_xrange     (GtkTextLayout     *layout,
                                               const GtkTextIter *iter,
                                               gint              *x,
                                               gint              *width);
void     gtk_text_layout_get_cursor_locations (GtkTextLayout     *layout,
                                               GtkTextIter       *iter,
                                               GdkRectangle      *strong_pos,
                                               GdkRectangle      *weak_pos);
gboolean _gtk_text_layout_get_block_cursor    (GtkTextLayout     *layout,
					       GdkRectangle      *pos);
gboolean gtk_text_layout_clamp_iter_to_vrange (GtkTextLayout     *layout,
                                               GtkTextIter       *iter,
                                               gint               top,
                                               gint               bottom);

gboolean gtk_text_layout_move_iter_to_line_end      (GtkTextLayout *layout,
                                                     GtkTextIter   *iter,
                                                     gint           direction);
gboolean gtk_text_layout_move_iter_to_previous_line (GtkTextLayout *layout,
                                                     GtkTextIter   *iter);
gboolean gtk_text_layout_move_iter_to_next_line     (GtkTextLayout *layout,
                                                     GtkTextIter   *iter);
void     gtk_text_layout_move_iter_to_x             (GtkTextLayout *layout,
                                                     GtkTextIter   *iter,
                                                     gint           x);
gboolean gtk_text_layout_move_iter_visually         (GtkTextLayout *layout,
                                                     GtkTextIter   *iter,
                                                     gint           count);

gboolean gtk_text_layout_iter_starts_line           (GtkTextLayout       *layout,
                                                     const GtkTextIter   *iter);

void     gtk_text_layout_get_iter_at_line           (GtkTextLayout *layout,
                                                     GtkTextIter    *iter,
                                                     GtkTextLine    *line,
                                                     gint            byte_offset);

/* Don't use these. Use gtk_text_view_add_child_at_anchor().
 * These functions are defined in gtktextchild.c, but here
 * since they are semi-public and require GtkTextLayout to
 * be declared.
 */
void gtk_text_child_anchor_register_child   (GtkTextChildAnchor *anchor,
                                             GtkWidget          *child,
                                             GtkTextLayout      *layout);
void gtk_text_child_anchor_unregister_child (GtkTextChildAnchor *anchor,
                                             GtkWidget          *child);

void gtk_text_child_anchor_queue_resize     (GtkTextChildAnchor *anchor,
                                             GtkTextLayout      *layout);

void gtk_text_anchored_child_set_layout     (GtkWidget          *child,
                                             GtkTextLayout      *layout);

void gtk_text_layout_spew (GtkTextLayout *layout);

G_END_DECLS

#endif  /* __GTK_TEXT_LAYOUT_H__ */