netsurf/desktop/selection.h

101 lines
2.9 KiB
C

/*
* Copyright 2005 Adrian Lees <adrianl@users.sourceforge.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Text selection within browser windows (interface).
*/
#ifndef _NETSURF_DESKTOP_SELECTION_H_
#define _NETSURF_DESKTOP_SELECTION_H_
#include <stdbool.h>
#include "desktop/mouse.h"
struct box;
typedef enum {
DRAG_NONE,
DRAG_START,
DRAG_END
} seln_drag_state;
/* this structure should be treated as opaque outside selection.c
(it's defined here to accelerate selection_defined(s) for reduced
impact on redraw code) */
struct selection
{
struct content *c;
struct box *root;
unsigned max_idx; /* total bytes in text representation */
unsigned start_idx; /* offset in bytes within text representation */
unsigned end_idx;
bool defined;
bool is_html;
seln_drag_state drag_state;
};
struct selection *selection_create(struct content *c, bool is_html);
void selection_prepare(struct selection *s, struct content *c, bool is_html);
void selection_destroy(struct selection *s);
void selection_init(struct selection *s, struct box *root);
void selection_reinit(struct selection *s, struct box *root);
/* struct box *selection_root(struct selection *s); */
#define selection_root(s) ((s)->root)
/* bool selection_defined(struct selection *s); */
#define selection_defined(s) ((s)->defined)
/* bool selection_dragging(struct selection *s); */
#define selection_dragging(s) ((s)->drag_state != DRAG_NONE)
/* bool selection_dragging_start(struct selection *s); */
#define selection_dragging_start(s) ((s)->drag_state == DRAG_START)
void selection_clear(struct selection *s, bool redraw);
void selection_select_all(struct selection *s);
void selection_set_start(struct selection *s, unsigned idx);
void selection_set_end(struct selection *s, unsigned idx);
bool selection_click(struct selection *s, browser_mouse_state mouse,
unsigned idx);
void selection_track(struct selection *s, browser_mouse_state mouse,
unsigned idx);
bool selection_copy_to_clipboard(struct selection *s);
char * selection_get_copy(struct selection *s);
/** Handles completion of a drag operation */
/* void selection_drag_end(struct selection *s); */
#define selection_drag_end(s) ((s)->drag_state = DRAG_NONE)
bool selection_highlighted(const struct selection *s,
unsigned start, unsigned end,
unsigned *start_idx, unsigned *end_idx);
#endif