netsurf/frontends/framebuffer/local_history.c

250 lines
5.9 KiB
C
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/*
* Copyright 2017 Vincent Sanders <vince@netsurf-browser.org>
*
* 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
* Implementation of framebuffer local history manager.
*/
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <limits.h>
#include <libnsfb.h>
#include <libnsfb_plot.h>
#include <libnsfb_event.h>
#include "utils/log.h"
#include "netsurf/keypress.h"
#include "netsurf/plotters.h"
#include "desktop/local_history.h"
#include "framebuffer/gui.h"
#include "framebuffer/fbtk.h"
#include "framebuffer/framebuffer.h"
#include "framebuffer/corewindow.h"
#include "framebuffer/local_history.h"
struct fb_local_history_window {
struct fb_corewindow core;
struct local_history_session *session;
};
static struct fb_local_history_window *local_history_window = NULL;
/**
* callback for mouse action on local history window
*
* \param fb_cw The fb core window structure.
* \param mouse_state netsurf mouse state on event
* \param x location of event
* \param y location of event
* \return NSERROR_OK on success otherwise apropriate error code
*/
static nserror
fb_local_history_mouse(struct fb_corewindow *fb_cw,
browser_mouse_state mouse_state,
int x, int y)
{
struct fb_local_history_window *lhw;
/* technically degenerate container of */
lhw = (struct fb_local_history_window *)fb_cw;
local_history_mouse_action(lhw->session, mouse_state, x, y);
if (mouse_state != BROWSER_MOUSE_HOVER) {
fbtk_set_mapping(lhw->core.wnd, false);
}
return NSERROR_OK;
}
/**
* callback for keypress on local history window
*
* \param fb_cw The fb core window structure.
* \param nskey The netsurf key code
* \return NSERROR_OK on success otherwise apropriate error code
*/
static nserror
fb_local_history_key(struct fb_corewindow *fb_cw, uint32_t nskey)
{
struct fb_local_history_window *lhw;
/* technically degenerate container of */
lhw = (struct fb_local_history_window *)fb_cw;
if (local_history_keypress(lhw->session, nskey)) {
return NSERROR_OK;
}
return NSERROR_NOT_IMPLEMENTED;
}
/**
* callback on draw event for local history window
*
* \param fb_cw The fb core window structure.
* \param r The rectangle of the window that needs updating.
* \return NSERROR_OK on success otherwise apropriate error code
*/
static nserror
fb_local_history_draw(struct fb_corewindow *fb_cw, struct rect *r)
{
struct redraw_context ctx = {
.interactive = true,
.background_images = true,
.plot = &fb_plotters
};
struct fb_local_history_window *lhw;
/* technically degenerate container of */
lhw = (struct fb_local_history_window *)fb_cw;
local_history_redraw(lhw->session, 0, 0, r, &ctx);
return NSERROR_OK;
}
/**
* Creates the window for the local history view.
*
* \return NSERROR_OK on success else appropriate error code on faliure.
*/
static nserror
fb_local_history_init(fbtk_widget_t *parent,
struct browser_window *bw,
struct fb_local_history_window **win_out)
{
struct fb_local_history_window *ncwin;
nserror res;
/* memoise window so it can be represented when necessary
* instead of recreating every time.
*/
if ((*win_out) != NULL) {
res = local_history_set((*win_out)->session, bw);
return res;
}
ncwin = calloc(1, sizeof(*ncwin));
if (ncwin == NULL) {
return NSERROR_NOMEM;
}
ncwin->core.draw = fb_local_history_draw;
ncwin->core.key = fb_local_history_key;
ncwin->core.mouse = fb_local_history_mouse;
res = fb_corewindow_init(parent, &ncwin->core);
if (res != NSERROR_OK) {
free(ncwin);
return res;
}
res = local_history_init(ncwin->core.cb_table,
(struct core_window *)ncwin,
bw,
&ncwin->session);
if (res != NSERROR_OK) {
free(ncwin);
return res;
}
*win_out = ncwin;
return NSERROR_OK;
}
/* exported function documented gtk/history.h */
nserror fb_local_history_present(fbtk_widget_t *parent,
struct browser_window *bw)
{
nserror res;
int prnt_width, prnt_height;
int width, height;
res = fb_local_history_init(parent, bw, &local_history_window);
if (res == NSERROR_OK) {
prnt_width = fbtk_get_width(parent);
prnt_height = fbtk_get_height(parent);
/* resize history widget ensureing the drawing area is
* no larger than parent window
*/
res = local_history_get_size(local_history_window->session,
&width,
&height);
if (width > prnt_width) {
width = prnt_width;
}
if (height > prnt_height) {
height = prnt_height;
}
/* should update scroll area with contents */
fbtk_set_zorder(local_history_window->core.wnd, INT_MIN);
fbtk_set_mapping(local_history_window->core.wnd, true);
local_history_scroll_to_cursor(local_history_window->session);
}
return res;
}
/* exported function documented gtk/history.h */
nserror fb_local_history_hide(void)
{
nserror res = NSERROR_OK;
if (local_history_window != NULL) {
fbtk_set_mapping(local_history_window->core.wnd, false);
res = local_history_set(local_history_window->session, NULL);
}
return res;
}
/* exported function documented gtk/history.h */
nserror fb_local_history_destroy(void)
{
nserror res;
if (local_history_window == NULL) {
return NSERROR_OK;
}
res = local_history_fini(local_history_window->session);
if (res == NSERROR_OK) {
res = fb_corewindow_fini(&local_history_window->core);
//gtk_widget_destroy(GTK_WIDGET(local_history_window->wnd));
free(local_history_window);
local_history_window = NULL;
}
return res;
}