netsurf/desktop/textinput.c
2014-10-17 12:21:52 +01:00

140 lines
3.4 KiB
C

/*
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
* Copyright 2004 Andrew Timmins <atimmins@blueyonder.co.uk>
* Copyright 2004 John Tytgat <joty@netsurf-browser.org>
* 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
* Textual input handling implementation
*/
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include <dom/dom.h>
#include "utils/log.h"
#include "utils/talloc.h"
#include "utils/utf8.h"
#include "utils/utils.h"
#include "render/box.h"
#include "render/form.h"
#include "render/html_internal.h"
#include "render/layout.h"
#include "desktop/mouse.h"
#include "desktop/browser_private.h"
#include "desktop/textinput.h"
#include "desktop/gui_window.h"
#include "desktop/gui_internal.h"
/* Define to enable textinput debug */
#undef TEXTINPUT_DEBUG
/**
* Position the caret and assign a callback for key presses.
*
* \param bw The browser window in which to place the caret
* \param x X coordinate of the caret
* \param y Y coordinate
* \param height Height of caret
* \param clip Clip rectangle for caret, or NULL if none
*/
void browser_window_place_caret(struct browser_window *bw, int x, int y,
int height, const struct rect *clip)
{
struct browser_window *root_bw;
int pos_x = 0;
int pos_y = 0;
struct rect cr;
struct rect *crp = NULL;
/* Find top level browser window */
root_bw = browser_window_get_root(bw);
browser_window_get_position(bw, true, &pos_x, &pos_y);
x = x * bw->scale + pos_x;
y = y * bw->scale + pos_y;
if (clip != NULL) {
cr = *clip;
cr.x0 += pos_x;
cr.y0 += pos_y;
cr.x1 += pos_x;
cr.y1 += pos_y;
crp = &cr;
}
/* TODO: intersect with bw viewport */
guit->window->place_caret(root_bw->window, x, y, height * bw->scale, crp);
/* Set focus browser window */
root_bw->focus = bw;
root_bw->can_edit = true;
}
/**
* Removes the caret and callback for key process.
*
* \param bw The browser window from which to remove caret
*/
void browser_window_remove_caret(struct browser_window *bw, bool only_hide)
{
struct browser_window *root_bw;
root_bw = browser_window_get_root(bw);
assert(root_bw != NULL);
if (only_hide)
root_bw->can_edit = true;
else
root_bw->can_edit = false;
if (root_bw->window) {
guit->window->remove_caret(root_bw->window);
}
}
/**
* Handle key presses in a browser window.
*
* \param bw The root browser window
* \param key The UCS4 character codepoint
* \return true if key handled, false otherwise
*/
bool browser_window_key_press(struct browser_window *bw, uint32_t key)
{
struct browser_window *focus = bw->focus;
assert(bw->window != NULL);
if (focus == NULL)
focus = bw;
if (focus->current_content == NULL)
return false;
return content_keypress(focus->current_content, key);
}