316 lines
10 KiB
C
316 lines
10 KiB
C
#ifndef _EFL_CANVAS_TEXTBLOCK_INTERNAL_H
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#define _EFL_CANVAS_TEXTBLOCK_INTERNAL_H
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#include <Evas.h>
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#define _REPLACEMENT_CHAR_UTF8 "\xEF\xBF\xBC"
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#define _PARAGRAPH_SEPARATOR_UTF8 "\xE2\x80\xA9"
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#define _NEWLINE_UTF8 "\n"
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#define _TAB_UTF8 "\t"
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/* private struct for textblock object internal data */
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/**
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* @internal
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* @typedef Efl_Canvas_Textblock_Data
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* The actual textblock object.
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*/
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typedef struct _Evas_Object_Textblock Efl_Canvas_Textblock_Data;
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/**
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* @internal
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* @typedef Evas_Object_Style_Tag
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* The structure used for finding style tags.
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*/
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typedef struct _Evas_Object_Style_Tag Evas_Object_Style_Tag;
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/**
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* @internal
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* @typedef Evas_Object_Style_Tag
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* The structure used for finding style tags.
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*/
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typedef struct _Evas_Object_Style_Tag_Base Evas_Object_Style_Tag_Base;
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/**
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* @internal
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* @typedef Evas_Object_Textblock_Node_Text
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* A text node.
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*/
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typedef struct _Evas_Object_Textblock_Node_Text Evas_Object_Textblock_Node_Text;
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/*
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* Defined in Evas.h
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typedef struct _Evas_Object_Textblock_Node_Format Evas_Object_Textblock_Node_Format;
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*/
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typedef struct _Evas_Textblock_Node_Format Evas_Textblock_Node_Format;
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/**
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* @internal
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* @typedef Evas_Object_Textblock_Paragraph
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* A layouting paragraph.
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*/
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typedef struct _Evas_Object_Textblock_Paragraph Evas_Object_Textblock_Paragraph;
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/**
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* @internal
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* @typedef Evas_Object_Textblock_Line
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* A layouting line.
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*/
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typedef struct _Evas_Object_Textblock_Line Evas_Object_Textblock_Line;
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/**
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* @internal
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* @typedef Evas_Object_Textblock_Item
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* A layouting item.
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*/
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typedef struct _Evas_Object_Textblock_Item Evas_Object_Textblock_Item;
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/**
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* @internal
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* @typedef Evas_Object_Textblock_Item
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* A layouting text item.
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*/
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typedef struct _Evas_Object_Textblock_Text_Item Evas_Object_Textblock_Text_Item;
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/**
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* @internal
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* @typedef Evas_Object_Textblock_Format_Item
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* A layouting format item.
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*/
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typedef struct _Evas_Object_Textblock_Format_Item Evas_Object_Textblock_Format_Item;
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/**
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* @internal
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* @typedef Evas_Object_Textblock_Format
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* A textblock format.
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*/
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typedef struct _Evas_Object_Textblock_Format Evas_Object_Textblock_Format;
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/**
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* @internal
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* @typedef Evas_Textblock_Selection_Iterator
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* A textblock selection iterator.
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*/
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typedef struct _Evas_Textblock_Selection_Iterator Evas_Textblock_Selection_Iterator;
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/**
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* @internal
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* @typedef Efl_Text_Attribute_Handle_Iterator
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* A textblock annotation iterator.
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*/
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typedef struct _Efl_Text_Attribute_Handle_Iterator Efl_Text_Attribute_Handle_Iterator;
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/**
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* @internal
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* @typedef Efl_Canvas_Textblock_Filter
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* A structure holding gfx filter information for a text item
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*/
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typedef struct _Efl_Canvas_Textblock_Filter Efl_Canvas_Textblock_Filter;
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/**
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* @internal
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* @typedef Efl_Canvas_Textblock_Filter_Post_Render
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* Post-render data for async rendering of gfx filters
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*/
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typedef struct _Efl_Canvas_Textblock_Filter_Post_Render Efl_Canvas_Textblock_Filter_Post_Render;
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/**
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* @internal
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* @typedef Efl_Canvas_Textblock_Filter_Program
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* Filter name - code database
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*/
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typedef struct _Efl_Canvas_Textblock_Filter_Program Efl_Canvas_Textblock_Filter_Program;
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/**
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* @internal
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* @typedef Text_Item_Filter
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* Text item filter properties (run context, output buffer, ...)
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*/
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typedef struct _Text_Item_Filter Text_Item_Filter;
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struct _Evas_Object_Style_Tag_Base
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{
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const char *tag; /**< Format Identifier: b=Bold, i=Italic etc. */
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const char *replace; /**< Replacement string. "font_weight=Bold", "font_style=Italic" etc. */
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size_t tag_len; /**< Strlen of tag. */
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};
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struct _Evas_Object_Style_Tag
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{
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EINA_INLIST;
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Evas_Object_Style_Tag_Base tag; /**< Base style object for holding style information. */
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};
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struct _Evas_Object_Textblock_Node_Text
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{
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EINA_INLIST;
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Eina_UStrbuf *unicode; /**< Actual paragraph text. */
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char *utf8; /**< Text in utf8 format. */
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Evas_Object_Textblock_Node_Format *format_node; /**< Points to the last format node before the paragraph, or if there is none, to the first format node within the paragraph.*/
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Evas_Object_Textblock_Paragraph *par; /**< Points to the paragraph node of which this node is a part. */
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Eina_Bool dirty : 1; /**< EINA_TRUE if already handled/format changed, else EINA_FALSE. */
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Eina_Bool is_new : 1; /**< EINA_TRUE if its a new paragraph, else EINA_FALSE. */
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};
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struct _Evas_Textblock_Node_Format
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{
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EINA_INLIST;
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const char *format; /**< Cached, parsed and translated version of orig_format. */
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const char *orig_format; /**< Original format information. */
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Evas_Object_Textblock_Node_Text *text_node; /**< The text node it's pointing to. */
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Efl_Text_Attribute_Handle *annotation; /**< Pointer to this node's annotation handle (if exists). */
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size_t offset; /**< Offset from the last format node of the same text. */
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struct {
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unsigned char l, r, t, b;
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} pad; /**< Amount of padding required. */
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unsigned char anchor : 2; /**< ANCHOR_NONE, ANCHOR_A or ANCHOR_ITEM. */
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Eina_Bool opener : 1; /**< EINA_TRUE if opener, else EINA_FALSE. */
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Eina_Bool own_closer : 1; /**< EINA_TRUE if own_closer, else EINA_FALSE. */
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Eina_Bool visible : 1; /**< EINA_TRUE if format is visible format, else EINA_FALSE. */
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Eina_Bool format_change : 1; /**< EINA_TRUE if the format of the textblock has changed, else EINA_FALSE. */
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Eina_Bool is_new : 1; /**< EINA_TRUE if its a new format node, else EINA_FALSE */
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};
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struct _Efl_Text_Cursor_Handle
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{
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Evas_Object *obj;
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Eina_List *cur_objs;
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size_t pos;
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Evas_Object_Textblock_Node_Text *node;
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unsigned int ref_count;
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Eina_Bool changed : 1;
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};
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struct _Efl_Text_Attribute_Handle
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{
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EINA_INLIST;
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Evas_Object *obj;
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Evas_Object_Textblock_Node_Format *start_node, *end_node;
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Eina_Bool is_item : 1; /**< indicates it is an item/object placeholder */
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};
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void evas_textblock_cursor_line_jump_by(Efl_Text_Cursor_Handle *cur, int by);
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int _cursor_text_append(Efl_Text_Cursor_Handle *cur, const char *text);
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void evas_textblock_async_block(Evas_Object *eo_object);
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// Used in Efl.Text.Cursor, where multible objects can have same handle.
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Efl_Text_Cursor_Handle *
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evas_textblock_cursor_ref(Efl_Text_Cursor_Handle *cursor, Eo * cursor_obj);
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// Used in Efl.Text.Cursor, where multible objects can have same handle.
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void
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evas_textblock_cursor_unref(Efl_Text_Cursor_Handle *cursor, Eo * cursor_obj);
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void _evas_textblock_cursor_init(Efl_Text_Cursor_Handle *cur, const Evas_Object *tb);
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/*Annoation Functions*/
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/**
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* @internal
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* Returns the value of the current data of list node,
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* and goes to the next list node.
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*
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* @param it the iterator.
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* @param data the data of the current list node.
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* @return EINA_FALSE if unsuccessful. Otherwise, returns EINA_TRUE.
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*/
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Eina_Bool
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_evas_textblock_annotation_iterator_next(Efl_Text_Attribute_Handle_Iterator *it, void **data);
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/**
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* @internal
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* Frees the annotation iterator.
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* @param it the iterator to free
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* @return EINA_FALSE if unsuccessful. Otherwise, returns EINA_TRUE.
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*/
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void
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_evas_textblock_annotation_iterator_free(Efl_Text_Attribute_Handle_Iterator *it);
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/**
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* @internal
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* Creates newly allocated iterator associated to a list.
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* @param list The list.
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* @return If the memory cannot be allocated, NULL is returned.
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* Otherwise, a valid iterator is returned.
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*/
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Eina_Iterator *
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_evas_textblock_annotation_iterator_new(Eina_List *list);
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void
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_textblock_cursor_pos_at_fnode_set(Efl_Text_Cursor_Handle *cur,
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Evas_Object_Textblock_Node_Format *fnode);
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Eina_Bool
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_evas_textblock_annotations_set(Evas_Object *eo_obj,
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Efl_Text_Attribute_Handle *an,
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Efl_Text_Cursor_Handle *start, Efl_Text_Cursor_Handle *end,
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const char *format, Eina_Bool is_item);
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void
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_evas_textblock_annotation_remove(Evas_Object *eo_obj, Efl_Canvas_Textblock_Data *o,
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Efl_Text_Attribute_Handle *an, Eina_Bool remove_nodes, Eina_Bool invalidate);
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void
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_evas_textblock_annotations_clear(const Evas_Object *eo_obj);
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Efl_Text_Attribute_Handle *
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_evas_textblock_annotations_insert(Eo *eo_obj,
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Efl_Text_Cursor_Handle *start, Efl_Text_Cursor_Handle *end,
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const char *format, Eina_Bool is_item);
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Eina_Inlist *
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_evas_textblock_annotations_get(Evas_Object *o);
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void
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_evas_textblock_annotations_node_format_remove(Evas_Object *o, Evas_Object_Textblock_Node_Format *n, int visual_adjustment);
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void
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_evas_textblock_relayout_if_needed(Evas_Object *o);
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#ifdef EAPI
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# undef EAPI
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#endif
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#ifdef _WIN32
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# ifdef EFL_BUILD
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# ifdef DLL_EXPORT
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# define EAPI __declspec(dllexport)
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# else
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# define EAPI
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# endif
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# else
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# define EAPI __declspec(dllimport)
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# endif
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#else
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# ifdef __GNUC__
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# if __GNUC__ >= 4
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# define EAPI __attribute__ ((visibility("default")))
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# else
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# define EAPI
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# endif
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# else
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# define EAPI
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# endif
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#endif
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/**
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* Internally sets given text_object into cursor object.
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*
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* @param canvas_text_obj the cursor object.
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* @param canvas_text_obj the canvas text object, where cursor methods will take effect.
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* @param text_obj the text_object that user can get using cursor text_object property.
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*/
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EAPI void efl_text_cursor_text_object_set(Eo *cursor, Eo *canvas_text_obj, Eo *text_obj);
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/**
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* Internally sets cursor handle(legacy textblock cursor) into cursor object.
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*
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* @param obj the cursor object.
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* @param handle the text cursor handle.
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*/
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EAPI void efl_text_cursor_handle_set(Eo *obj, Efl_Text_Cursor_Handle *handle);
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/**
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* Internally gets cursor handle(legacy textblock cursor) from cursor object.
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*
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* @param obj the cursor object.
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* @return the internal text cursor handle.
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*/
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EAPI Efl_Text_Cursor_Handle *efl_text_cursor_handle_get(const Eo *obj);
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#undef EAPI
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#define EAPI
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#endif//#ifndef _EFL_CANVAS_TEXTBLOCK_INTERNAL_H
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