ui_node_abstractscrollbar.cpp

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/*
Copyright (C) 2002-2020 UFO: Alien Invasion.

This program 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; either version 2
of the License, or (at your option) any later version.

This program 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "../ui_behaviour.h"
#include "../ui_actions.h"
#include "../ui_lua.h"

#include "ui_node_abstractscrollbar.h"

#include "../../../common/scripts_lua.h"

#define EXTRADATA_TYPE abstractScrollbarExtraData_t
#define EXTRADATA(node) UI_EXTRADATA(node, abstractScrollbarExtraData_t)

void UI_AbstractScrollbarNodeSet (uiNode_t* node, int value)
{
    int pos = value;

    if (pos < 0) {
        pos = 0;
    } else if (pos > EXTRADATA(node).fullsize - EXTRADATA(node).viewsize) {
        pos = EXTRADATA(node).fullsize - EXTRADATA(node).viewsize;
    }
    if (pos < 0)
        pos = 0;

    /* nothing change */
    if (EXTRADATA(node).pos == pos)
        return;

    /* update status */
    EXTRADATA(node).pos = pos;

    /* fire change event */
    if (node->onChange) {
        UI_ExecuteEventActions(node, node->onChange);
    }
    if (node->lua_onChange != LUA_NOREF) {
        UI_ExecuteLuaEventScript(node, node->lua_onChange);
    }
}

void UI_RegisterAbstractScrollbarNode (uiBehaviour_t* behaviour)
{
    behaviour->name = "abstractscrollbar";
    behaviour->isAbstract = true;
    behaviour->extraDataSize = sizeof(EXTRADATA_TYPE);
    behaviour->manager = UINodePtr(new uiAbstractScrollbarNode());
    behaviour->lua_SWIG_typeinfo = UI_SWIG_TypeQuery("uiAbstractScrollbarNode_t *");

    /* Current position of the scroll. Image of the <code>viewpos</code> from <code>abstractscrollable</code> node. */
    UI_RegisterExtradataNodeProperty(behaviour, "current", V_INT, EXTRADATA_TYPE, pos);
    /* Image of the <code>viewsize</code> from <code>abstractscrollable</code> node. */
    UI_RegisterExtradataNodeProperty(behaviour, "viewsize", V_INT, EXTRADATA_TYPE, viewsize);
    /* Image of the <code>fullsize</code> from <code>abstractscrollable</code> node. */
    UI_RegisterExtradataNodeProperty(behaviour, "fullsize", V_INT, EXTRADATA_TYPE, fullsize);

    /* If true, hide the scroll when the position is 0 and can't change (when <code>viewsize</code> >= <code>fullsize</code>). */
    UI_RegisterExtradataNodeProperty(behaviour, "hidewhenunused", V_BOOL, EXTRADATA_TYPE, hideWhenUnused);
}