forked from AuroraMiddleware/gtk
7a958797e2
2000-12-31 Havoc Pennington <hp@pobox.com> * gtk/gtktextview.c: Rearrange all the scroll-while-dragging-or-selecting code to be different, not necessarily better. ;-) (gtk_text_view_scroll_to_mark): Change this function to take within_margin as a fraction instead of a pixel value, and to take alignment arguments (indicating where to align the mark inside the visible area) * gtk/testtextbuffer.c (fill_buffer): fix bad cast of GtkTextTag to GtkObject * gtk/gtktextiter.c (gtk_text_iter_set_line_offset): change behavior so that offsets past the end of the line are not allowed, and an offset equal to the line length moves the iterator to the next line (gtk_text_iter_set_line_index): make parallel change (gtk_text_iter_get_bytes_in_line): add this function * gtk/gtktextbtree.c (_gtk_text_line_byte_locate): change handling of byte indexes off the end of the line; byte index at the end of the line now returns FALSE and doesn't fill in the requested values, byte index past the end of the line is an error. Also, don't allow -1 offset anymore, since its meaning is unclear. This change exposes some bug in visual cursor motion, where we end up with a huge invalid byte index; needs fixing. Symptom of bug is a crash when you hit up arrow. (_gtk_text_line_char_locate): match the change to byte_locate * gtk/gtktextiter.c (find_by_log_attrs): Handle iteration backward from start of line properly. fixes bug reported by Mikael Hermansson where backspace would delete all text before the cursor.
286 lines
18 KiB
C
286 lines
18 KiB
C
#ifndef GTK_TEXT_BTREE_H
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#define GTK_TEXT_BTREE_H
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#include <gtk/gtktextbuffer.h>
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#include <gtk/gtktexttag.h>
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#include <gtk/gtktextmark.h>
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#include <gtk/gtktextchild.h>
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#include <gtk/gtktextsegment.h>
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#include <gtk/gtktextiter.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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GtkTextBTree *_gtk_text_btree_new (GtkTextTagTable *table,
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GtkTextBuffer *buffer);
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void _gtk_text_btree_ref (GtkTextBTree *tree);
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void _gtk_text_btree_unref (GtkTextBTree *tree);
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GtkTextBuffer *_gtk_text_btree_get_buffer (GtkTextBTree *tree);
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guint _gtk_text_btree_get_chars_changed_stamp (GtkTextBTree *tree);
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guint _gtk_text_btree_get_segments_changed_stamp (GtkTextBTree *tree);
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void _gtk_text_btree_segments_changed (GtkTextBTree *tree);
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/* Indexable segment mutation */
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void _gtk_text_btree_delete (GtkTextIter *start,
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GtkTextIter *end);
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void _gtk_text_btree_insert (GtkTextIter *iter,
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const gchar *text,
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gint len);
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void _gtk_text_btree_insert_pixbuf (GtkTextIter *iter,
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GdkPixbuf *pixbuf);
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GtkTextChildAnchor* _gtk_text_btree_create_child_anchor (GtkTextIter *iter);
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void _gtk_text_btree_unregister_child_anchor (GtkTextChildAnchor *anchor);
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/* View stuff */
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GtkTextLine *_gtk_text_btree_find_line_by_y (GtkTextBTree *tree,
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gpointer view_id,
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gint ypixel,
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gint *line_top_y);
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gint _gtk_text_btree_find_line_top (GtkTextBTree *tree,
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GtkTextLine *line,
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gpointer view_id);
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void _gtk_text_btree_add_view (GtkTextBTree *tree,
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GtkTextLayout *layout);
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void _gtk_text_btree_remove_view (GtkTextBTree *tree,
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gpointer view_id);
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void _gtk_text_btree_invalidate_region (GtkTextBTree *tree,
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const GtkTextIter *start,
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const GtkTextIter *end);
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void _gtk_text_btree_get_view_size (GtkTextBTree *tree,
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gpointer view_id,
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gint *width,
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gint *height);
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gboolean _gtk_text_btree_is_valid (GtkTextBTree *tree,
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gpointer view_id);
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gboolean _gtk_text_btree_validate (GtkTextBTree *tree,
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gpointer view_id,
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gint max_pixels,
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gint *y,
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gint *old_height,
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gint *new_height);
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void _gtk_text_btree_validate_line (GtkTextBTree *tree,
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GtkTextLine *line,
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gpointer view_id);
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/* Tag */
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void _gtk_text_btree_tag (const GtkTextIter *start,
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const GtkTextIter *end,
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GtkTextTag *tag,
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gboolean apply);
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/* "Getters" */
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GtkTextLine * _gtk_text_btree_get_line (GtkTextBTree *tree,
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gint line_number,
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gint *real_line_number);
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GtkTextLine * _gtk_text_btree_get_line_at_char (GtkTextBTree *tree,
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gint char_index,
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gint *line_start_index,
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gint *real_char_index);
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GtkTextTag** _gtk_text_btree_get_tags (const GtkTextIter *iter,
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gint *num_tags);
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gchar *_gtk_text_btree_get_text (const GtkTextIter *start,
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const GtkTextIter *end,
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gboolean include_hidden,
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gboolean include_nonchars);
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gint _gtk_text_btree_line_count (GtkTextBTree *tree);
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gint _gtk_text_btree_char_count (GtkTextBTree *tree);
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gboolean _gtk_text_btree_char_is_invisible (const GtkTextIter *iter);
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/* Get iterators (these are implemented in gtktextiter.c) */
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void _gtk_text_btree_get_iter_at_char (GtkTextBTree *tree,
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GtkTextIter *iter,
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gint char_index);
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void _gtk_text_btree_get_iter_at_line_char (GtkTextBTree *tree,
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GtkTextIter *iter,
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gint line_number,
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gint char_index);
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void _gtk_text_btree_get_iter_at_line_byte (GtkTextBTree *tree,
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GtkTextIter *iter,
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gint line_number,
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gint byte_index);
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gboolean _gtk_text_btree_get_iter_from_string (GtkTextBTree *tree,
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GtkTextIter *iter,
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const gchar *string);
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gboolean _gtk_text_btree_get_iter_at_mark_name (GtkTextBTree *tree,
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GtkTextIter *iter,
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const gchar *mark_name);
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void _gtk_text_btree_get_iter_at_mark (GtkTextBTree *tree,
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GtkTextIter *iter,
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GtkTextMark *mark);
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void _gtk_text_btree_get_last_iter (GtkTextBTree *tree,
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GtkTextIter *iter);
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void _gtk_text_btree_get_iter_at_line (GtkTextBTree *tree,
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GtkTextIter *iter,
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GtkTextLine *line,
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gint byte_offset);
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gboolean _gtk_text_btree_get_iter_at_first_toggle (GtkTextBTree *tree,
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GtkTextIter *iter,
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GtkTextTag *tag);
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gboolean _gtk_text_btree_get_iter_at_last_toggle (GtkTextBTree *tree,
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GtkTextIter *iter,
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GtkTextTag *tag);
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void _gtk_text_btree_get_iter_at_child_anchor (GtkTextBTree *tree,
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GtkTextIter *iter,
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GtkTextChildAnchor *anchor);
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/* Manipulate marks */
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GtkTextMark *_gtk_text_btree_set_mark (GtkTextBTree *tree,
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GtkTextMark *existing_mark,
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const gchar *name,
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gboolean left_gravity,
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const GtkTextIter *index,
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gboolean should_exist);
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void _gtk_text_btree_remove_mark_by_name (GtkTextBTree *tree,
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const gchar *name);
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void _gtk_text_btree_remove_mark (GtkTextBTree *tree,
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GtkTextMark *segment);
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gboolean _gtk_text_btree_get_selection_bounds (GtkTextBTree *tree,
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GtkTextIter *start,
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GtkTextIter *end);
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void _gtk_text_btree_place_cursor (GtkTextBTree *tree,
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const GtkTextIter *where);
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gboolean _gtk_text_btree_mark_is_insert (GtkTextBTree *tree,
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GtkTextMark *segment);
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gboolean _gtk_text_btree_mark_is_selection_bound (GtkTextBTree *tree,
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GtkTextMark *segment);
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GtkTextMark *_gtk_text_btree_get_mark_by_name (GtkTextBTree *tree,
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const gchar *name);
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GtkTextLine * _gtk_text_btree_first_could_contain_tag (GtkTextBTree *tree,
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GtkTextTag *tag);
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GtkTextLine * _gtk_text_btree_last_could_contain_tag (GtkTextBTree *tree,
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GtkTextTag *tag);
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/* Lines */
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/* Chunk of data associated with a line; views can use this to store
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info at the line. They should "subclass" the header struct here. */
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struct _GtkTextLineData {
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gpointer view_id;
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GtkTextLineData *next;
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gint height;
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gint width : 24;
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gint valid : 8;
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};
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/*
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* The data structure below defines a single line of text (from newline
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* to newline, not necessarily what appears on one line of the screen).
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*
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* You can consider this line a "paragraph" also
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*/
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struct _GtkTextLine {
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GtkTextBTreeNode *parent; /* Pointer to parent node containing
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* line. */
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GtkTextLine *next; /* Next in linked list of lines with
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* same parent node in B-tree. NULL
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* means end of list. */
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GtkTextLineSegment *segments; /* First in ordered list of segments
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* that make up the line. */
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GtkTextLineData *views; /* data stored here by views */
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};
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gint _gtk_text_line_get_number (GtkTextLine *line);
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gboolean _gtk_text_line_char_has_tag (GtkTextLine *line,
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GtkTextBTree *tree,
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gint char_in_line,
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GtkTextTag *tag);
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gboolean _gtk_text_line_byte_has_tag (GtkTextLine *line,
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GtkTextBTree *tree,
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gint byte_in_line,
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GtkTextTag *tag);
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gboolean _gtk_text_line_is_last (GtkTextLine *line,
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GtkTextBTree *tree);
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GtkTextLine * _gtk_text_line_next (GtkTextLine *line);
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GtkTextLine * _gtk_text_line_previous (GtkTextLine *line);
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void _gtk_text_line_add_data (GtkTextLine *line,
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GtkTextLineData *data);
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gpointer _gtk_text_line_remove_data (GtkTextLine *line,
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gpointer view_id);
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gpointer _gtk_text_line_get_data (GtkTextLine *line,
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gpointer view_id);
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void _gtk_text_line_invalidate_wrap (GtkTextLine *line,
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GtkTextLineData *ld);
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gint _gtk_text_line_char_count (GtkTextLine *line);
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gint _gtk_text_line_byte_count (GtkTextLine *line);
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gint _gtk_text_line_char_index (GtkTextLine *line);
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GtkTextLineSegment *_gtk_text_line_byte_to_segment (GtkTextLine *line,
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gint byte_offset,
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gint *seg_offset);
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GtkTextLineSegment *_gtk_text_line_char_to_segment (GtkTextLine *line,
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gint char_offset,
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gint *seg_offset);
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gboolean _gtk_text_line_byte_locate (GtkTextLine *line,
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gint byte_offset,
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GtkTextLineSegment **segment,
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GtkTextLineSegment **any_segment,
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gint *seg_byte_offset,
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gint *line_byte_offset);
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gboolean _gtk_text_line_char_locate (GtkTextLine *line,
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gint char_offset,
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GtkTextLineSegment **segment,
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GtkTextLineSegment **any_segment,
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gint *seg_char_offset,
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gint *line_char_offset);
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void _gtk_text_line_byte_to_char_offsets (GtkTextLine *line,
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gint byte_offset,
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gint *line_char_offset,
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gint *seg_char_offset);
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void _gtk_text_line_char_to_byte_offsets (GtkTextLine *line,
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gint char_offset,
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gint *line_byte_offset,
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gint *seg_byte_offset);
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GtkTextLineSegment *_gtk_text_line_byte_to_any_segment (GtkTextLine *line,
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gint byte_offset,
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gint *seg_offset);
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GtkTextLineSegment *_gtk_text_line_char_to_any_segment (GtkTextLine *line,
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gint char_offset,
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gint *seg_offset);
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gint _gtk_text_line_byte_to_char (GtkTextLine *line,
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gint byte_offset);
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gint _gtk_text_line_char_to_byte (GtkTextLine *line,
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gint char_offset);
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GtkTextLine * _gtk_text_line_next_could_contain_tag (GtkTextLine *line,
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GtkTextBTree *tree,
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GtkTextTag *tag);
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GtkTextLine * _gtk_text_line_previous_could_contain_tag (GtkTextLine *line,
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GtkTextBTree *tree,
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GtkTextTag *tag);
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/* Debug */
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void _gtk_text_btree_check (GtkTextBTree *tree);
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void _gtk_text_btree_spew (GtkTextBTree *tree);
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extern gboolean _gtk_text_view_debug_btree;
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/* ignore, exported only for gtktextsegment.c */
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void _gtk_toggle_segment_check_func (GtkTextLineSegment *segPtr,
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GtkTextLine *line);
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void _gtk_change_node_toggle_count (GtkTextBTreeNode *node,
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GtkTextTagInfo *info,
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gint delta);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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