mirror of
https://github.com/netsurf-browser/netsurf
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109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/*
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* Copyright 2005 Adrian Lees <adrianl@users.sourceforge.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* Text selection within browser windows, platform-independent part (interface)
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*/
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#ifndef _NETSURF_DESKTOP_SELECTION_H_
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#define _NETSURF_DESKTOP_SELECTION_H_
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#include "desktop/browser.h"
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#include "render/box.h"
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typedef enum {
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DRAG_NONE,
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DRAG_START,
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DRAG_END
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} seln_drag_state;
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/* this structure should be treated as opaque outside selection.c
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(it's defined here to accelerate selection_defined(s) for reduced
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impact on redraw code) */
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struct selection
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{
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struct browser_window *bw;
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struct box *root;
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unsigned max_idx; /* total bytes in text representation */
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unsigned start_idx; /* offset in bytes within text representation */
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unsigned end_idx;
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bool defined;
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bool last_was_end;
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seln_drag_state drag_state;
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};
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typedef bool (*seln_traverse_handler)(const char *text, size_t length,
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bool space, struct box *box, void *handle);
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struct selection *selection_create(struct browser_window *bw);
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void selection_destroy(struct selection *s);
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void selection_init(struct selection *s, struct box *root);
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void selection_reinit(struct selection *s, struct box *root);
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/* struct box *selection_root(struct selection *s); */
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#define selection_root(s) ((s)->root)
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/* bool selection_defined(struct selection *s); */
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#define selection_defined(s) ((s)->defined)
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/* bool selection_dragging(struct selection *s); */
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#define selection_dragging(s) ((s)->drag_state != DRAG_NONE)
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/* bool selection_dragging_start(struct selection *s); */
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#define selection_dragging_start(s) ((s)->drag_state == DRAG_START)
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void selection_clear(struct selection *s, bool redraw);
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void selection_select_all(struct selection *s);
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void selection_set_start(struct selection *s, unsigned idx);
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void selection_set_end(struct selection *s, unsigned idx);
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struct box *selection_get_start(struct selection *s, int *pidx);
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struct box *selection_get_end(struct selection *s, int *pidx);
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bool selection_click(struct selection *s, browser_mouse_state mouse, unsigned idx);
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void selection_track(struct selection *s, browser_mouse_state mouse, unsigned idx);
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/** Handles completion of a drag operation */
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/* void selection_drag_end(struct selection *s); */
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#define selection_drag_end(s) ((s)->drag_state = DRAG_NONE)
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bool selection_traverse(struct selection *s, seln_traverse_handler handler,
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void *handle);
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bool selection_highlighted(struct selection *s, unsigned start, unsigned end,
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unsigned *start_idx, unsigned *end_idx);
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bool selection_save_text(struct selection *s, const char *path);
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void selection_update(struct selection *s, size_t byte_offset, int change,
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bool redraw);
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#endif
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