corewindow.h

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/*
 * Copyright 2016 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/>.
 */
 
#ifndef GTK_COREWINDOW_H
#define GTK_COREWINDOW_H
 
#include "netsurf/core_window.h"
 
extern struct core_window_table *nsgtk_core_window_table;
 
/**
 * nsgtk core window mouse state
 */
struct nsgtk_corewindow_mouse {
        browser_mouse_state state; /**< last event status */
        bool pressed;
        int pressed_x;
        int pressed_y;
        int last_x;
        int last_y;
};
 
/**
 * nsgtk core window state
 */
struct nsgtk_corewindow {
        /* public variables */
        /** GTK drawable widget */
        GtkDrawingArea *drawing_area;
        /** scrollable area drawing area is within */
        GtkScrolledWindow *scrolled;
 
        /* private variables */
        /** Input method */
        GtkIMContext *input_method;
 
        /** mouse state */
        struct nsgtk_corewindow_mouse mouse_state;
 
        /** drag status set by core */
        core_window_drag_status drag_status;
 
        /**
         * callback to draw on drawable area of nsgtk core window
         *
         * \param nsgtk_cw The nsgtk core window structure.
         * \param r The rectangle of the window that needs updating.
         * \return NSERROR_OK on success otherwise appropriate error code
         */
        nserror (*draw)(struct nsgtk_corewindow *nsgtk_cw, struct rect *r);
 
        /**
         * callback for keypress on nsgtk core window
         *
         * \param nsgtk_cw The nsgtk core window structure.
         * \param nskey The netsurf key code.
         * \return NSERROR_OK if key processed,
         *         NSERROR_NOT_IMPLEMENTED if key not processed
         *         otherwise appropriate error code
         */
        nserror (*key)(struct nsgtk_corewindow *nsgtk_cw, uint32_t nskey);
 
        /**
         * callback for mouse event on nsgtk core window
         *
         * \param nsgtk_cw The nsgtk core window structure.
         * \param mouse_state mouse state
         * \param x location of event
         * \param y location of event
         * \return NSERROR_OK on success otherwise appropriate error code.
         */
        nserror (*mouse)(struct nsgtk_corewindow *nsgtk_cw, browser_mouse_state mouse_state, int x, int y);
};
 
/**
 * initialise elements of gtk core window.
 *
 * \param nsgtk_cw A gtk core window structure to initialise
 * \return NSERROR_OK on successful initialisation otherwise error code.
 */
nserror nsgtk_corewindow_init(struct nsgtk_corewindow *nsgtk_cw);
 
/**
 * finalise elements of gtk core window.
 *
 * \param nsgtk_cw A gtk core window structure to initialise
 * \return NSERROR_OK on successful finalisation otherwise error code.
 */
nserror nsgtk_corewindow_fini(struct nsgtk_corewindow *nsgtk_cw);
 
#endif