mirror of
https://github.com/netsurf-browser/netsurf
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3938d5340b
Now the core has a helper so that all the front ends don't need to implement the scroll to show area API. Now they simply have get and set scroll APIs.
280 lines
6.5 KiB
C
280 lines
6.5 KiB
C
/*
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* Copyright 2017 Vincent Sanders <vince@netsurf-browser.org>
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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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/**
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* \file
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* framebuffer generic core window interface.
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*
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* Provides interface for core renderers to the framebufefr toolkit
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* drawable area.
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*
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* This module is an object that must be encapsulated. Client users
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* should embed a struct fb_corewindow at the beginning of their
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* context for this display surface, fill in relevant data and then
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* call fb_corewindow_init()
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*
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* The fb core window structure requires the callback for draw, key and
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* mouse operations.
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*/
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#include <assert.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <libnsfb.h>
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#include <libnsfb_plot.h>
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#include <libnsfb_event.h>
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#include "utils/log.h"
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#include "utils/utils.h"
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#include "utils/messages.h"
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#include "utils/utf8.h"
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#include "utils/nsoption.h"
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#include "netsurf/keypress.h"
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#include "netsurf/mouse.h"
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#include "netsurf/plot_style.h"
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#include "framebuffer/gui.h"
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#include "framebuffer/fbtk.h"
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#include "framebuffer/corewindow.h"
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/* toolkit event handlers that do generic things and call internal callbacks */
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static int
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fb_cw_mouse_press_event(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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struct fb_corewindow *fb_cw = (struct fb_corewindow *)cbi->context;
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browser_mouse_state state;
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/** \todo frambuffer corewindow mouse event handling needs improving */
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if (cbi->event->type != NSFB_EVENT_KEY_UP) {
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state = BROWSER_MOUSE_HOVER;
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} else {
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state = BROWSER_MOUSE_PRESS_1;
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}
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fb_cw->mouse(fb_cw, state, cbi->x, cbi->y);
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return 1;
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}
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/*
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static bool
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fb_cw_input_event(toolkit_widget *widget, void *ctx)
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{
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struct fb_corewindow *fb_cw = (struct fb_corewindow *)ctx;
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fb_cw->key(fb_cw, keycode);
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return true;
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}
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*/
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/**
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* handler for toolkit window redraw event
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*/
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static int fb_cw_draw_event(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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struct fb_corewindow *fb_cw;
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nsfb_bbox_t rbox;
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struct rect clip;
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fb_cw = (struct fb_corewindow *)cbi->context;
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rbox.x0 = fbtk_get_absx(widget);
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rbox.y0 = fbtk_get_absy(widget);
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rbox.x1 = rbox.x0 + fbtk_get_width(widget);
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rbox.y1 = rbox.y0 + fbtk_get_height(widget);
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nsfb_claim(fbtk_get_nsfb(widget), &rbox);
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clip.x0 = fb_cw->scrollx;
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clip.y0 = fb_cw->scrolly;
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clip.x1 = fbtk_get_width(widget) + fb_cw->scrollx;
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clip.y1 = fbtk_get_height(widget) + fb_cw->scrolly;
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fb_cw->draw(fb_cw, &clip);
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nsfb_update(fbtk_get_nsfb(widget), &rbox);
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return 0;
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}
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/**
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* callback from core to request a redraw
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*/
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static nserror
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fb_cw_invalidate(struct core_window *cw, const struct rect *r)
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{
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/* struct fb_corewindow *fb_cw = (struct fb_corewindow *)cw;
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toolkit_widget_queue_draw_area(fb_cw->widget,
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r->x0, r->y0,
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r->x1 - r->x0, r->y1 - r->y0);
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*/
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return NSERROR_OK;
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}
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static nserror
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fb_cw_update_size(struct core_window *cw, int width, int height)
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{
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/* struct fb_corewindow *fb_cw = (struct fb_corewindow *)cw;
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toolkit_widget_set_size_request(FB_WIDGET(fb_cw->drawing_area),
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width, height);
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*/
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return NSERROR_OK;
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}
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static nserror
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fb_cw_set_scroll(struct core_window *cw, int x, int y)
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{
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/* struct fb_corewindow *fb_cw = (struct fb_corewindow *)cw;
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toolkit_scroll_widget(fb_cw->widget, r);
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*/
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return NSERROR_OK;
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}
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static nserror
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fb_cw_get_scroll(struct core_window *cw, int *x, int *y)
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{
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/* struct fb_corewindow *fb_cw = (struct fb_corewindow *)cw;
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toolkit_scroll_widget(fb_cw->widget, r);
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*/
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return NSERROR_NOT_IMPLEMENTED;
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}
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static nserror
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fb_cw_get_window_dimensions(struct core_window *cw, int *width, int *height)
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{
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struct fb_corewindow *fb_cw = (struct fb_corewindow *)cw;
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*width = fbtk_get_width(fb_cw->drawable);
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*height = fbtk_get_height(fb_cw->drawable);
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return NSERROR_OK;
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}
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static nserror
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fb_cw_drag_status(struct core_window *cw, core_window_drag_status ds)
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{
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struct fb_corewindow *fb_cw = (struct fb_corewindow *)cw;
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fb_cw->drag_status = ds;
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return NSERROR_OK;
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}
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struct core_window_callback_table fb_cw_cb_table = {
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.invalidate = fb_cw_invalidate,
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.update_size = fb_cw_update_size,
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.set_scroll = fb_cw_set_scroll,
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.get_scroll = fb_cw_get_scroll,
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.get_window_dimensions = fb_cw_get_window_dimensions,
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.drag_status = fb_cw_drag_status
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};
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/* exported function documented fb/corewindow.h */
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nserror fb_corewindow_init(fbtk_widget_t *parent, struct fb_corewindow *fb_cw)
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{
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int furniture_width;
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furniture_width = nsoption_int(fb_furniture_size);
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/* setup the core window callback table */
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fb_cw->cb_table = &fb_cw_cb_table;
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fb_cw->drag_status = CORE_WINDOW_DRAG_NONE;
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/* container window */
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fb_cw->wnd = fbtk_create_window(parent, 0, 0, 0, 0, 0);
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fb_cw->drawable = fbtk_create_user(fb_cw->wnd,
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0, 0,
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-furniture_width, -furniture_width,
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fb_cw);
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fbtk_set_handler(fb_cw->drawable,
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FBTK_CBT_REDRAW,
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fb_cw_draw_event,
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fb_cw);
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fbtk_set_handler(fb_cw->drawable,
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FBTK_CBT_CLICK,
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fb_cw_mouse_press_event,
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fb_cw);
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/*
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fbtk_set_handler(fb_cw->drawable,
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FBTK_CBT_INPUT,
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fb_cw_input_event,
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fb_cw);
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fbtk_set_handler(fb_cw->drawable,
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FBTK_CBT_POINTERMOVE,
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fb_cw_move_event,
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fb_cw);
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*/
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/* create horizontal scrollbar */
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fb_cw->hscroll = fbtk_create_hscroll(fb_cw->wnd,
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0,
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fbtk_get_height(fb_cw->wnd) - furniture_width,
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fbtk_get_width(fb_cw->wnd) - furniture_width,
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furniture_width,
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FB_SCROLL_COLOUR,
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FB_FRAME_COLOUR,
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NULL,
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NULL);
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fb_cw->vscroll = fbtk_create_vscroll(fb_cw->wnd,
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fbtk_get_width(fb_cw->wnd) - furniture_width,
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0,
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furniture_width,
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fbtk_get_height(fb_cw->wnd) - furniture_width,
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FB_SCROLL_COLOUR,
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FB_FRAME_COLOUR,
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NULL,
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NULL);
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fbtk_create_fill(fb_cw->wnd,
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fbtk_get_width(fb_cw->wnd) - furniture_width,
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fbtk_get_height(fb_cw->wnd) - furniture_width,
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furniture_width,
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furniture_width,
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FB_FRAME_COLOUR);
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return NSERROR_OK;
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}
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/* exported interface documented in fb/corewindow.h */
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nserror fb_corewindow_fini(struct fb_corewindow *fb_cw)
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{
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return NSERROR_OK;
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}
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