mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-11-25 07:49:38 +03:00
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/*
|
|
* Copyright 2009 Paul Blokus <paul_pl@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
|
|
* Scroll widget (interface).
|
|
*/
|
|
|
|
#ifndef _NETSURF_DESKTOP_SCROLL_H_
|
|
#define _NETSURF_DESKTOP_SCROLL_H_
|
|
|
|
#include <stdbool.h>
|
|
|
|
#include "desktop/browser.h"
|
|
|
|
#define SCROLLBAR_WIDTH 16
|
|
|
|
struct scroll;
|
|
|
|
typedef enum {
|
|
SCROLL_MSG_REDRAW, /* the scrollbar requests a redraw */
|
|
SCROLL_MSG_MOVED, /* the scroll value has changed */
|
|
SCROLL_MSG_SCROLL_START, /* a scroll drag has started, all mouse
|
|
* events should be passed to
|
|
* the scrollbar regardless of the
|
|
* coordinates
|
|
*/
|
|
SCROLL_MSG_SCROLL_FINISHED, /* cancel the above */
|
|
|
|
} scroll_msg;
|
|
|
|
struct scroll_msg_data {
|
|
struct scroll *scroll;
|
|
scroll_msg msg;
|
|
int new_scroll;
|
|
int x0, y0, x1, y1;
|
|
};
|
|
|
|
/**
|
|
* Client callback for the scroll.
|
|
*
|
|
* \param client_data user data passed at scroll creation
|
|
* \param scroll_data struct all necessary message data
|
|
*/
|
|
typedef void(*scroll_client_callback)(void *client_data,
|
|
struct scroll_msg_data *scroll_data);
|
|
|
|
bool scroll_create(bool horizontal, int length,
|
|
int scrolled_dimension, int scrolled_visible,
|
|
void *client_data, scroll_client_callback client_callback,
|
|
struct scroll **scroll_pt);
|
|
void scroll_destroy(struct scroll *scroll);
|
|
bool scroll_redraw(struct scroll *scroll, int x, int y,
|
|
int clip_x0, int clip_y0, int clip_x1, int clip_y1,
|
|
float scale);
|
|
|
|
void scroll_set(struct scroll *scroll, int scroll_val, bool bar);
|
|
int scroll_get_offset(struct scroll *scroll);
|
|
|
|
void scroll_set_extents(struct scroll *scroll, int length,
|
|
int scrolled_visible, int scrolled_dimension);
|
|
|
|
bool scroll_is_horizontal(struct scroll *scroll);
|
|
|
|
const char *scroll_mouse_action(struct scroll *scroll,
|
|
browser_mouse_state mouse, int x, int y);
|
|
void scroll_mouse_drag_end(struct scroll *scroll, browser_mouse_state mouse,
|
|
int x, int y);
|
|
void scroll_start_content_drag(struct scroll *scroll, int x, int y);
|
|
|
|
void scroll_make_pair(struct scroll *horizontal_scroll,
|
|
struct scroll *vertical_scroll);
|
|
|
|
void *scroll_get_data(struct scroll *scroll);
|
|
|
|
#endif
|