/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation 
 * 
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 * 
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** GUIX Component                                                        */
/**                                                                       */
/**   Widget Management (Widget)                                          */
/**                                                                       */
/**************************************************************************/

#define GX_SOURCE_CODE


/* Include necessary system files.  */

#include "gx_api.h"
#include "gx_widget.h"
#include "gx_system.h"
#include "gx_window.h"


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_widget_style_set                                PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function updates the style of the specified widget.            */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    widget                                Widget control block          */
/*    style                                 New style                     */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    status                                Completion status             */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _gx_window_view_update_detect         Detect if views changed       */
/*    _gx_system_dirty_mark                 Mark the widget as dirty      */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    GUIX Internal Code                                                  */
/*                                                                        */
/*  RELEASE HISTORY                                                       */
/*                                                                        */
/*    DATE              NAME                      DESCRIPTION             */
/*                                                                        */
/*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
/*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
/*                                            resulting in version 6.1    */
/*                                                                        */
/**************************************************************************/
UINT  _gx_widget_style_set(GX_WIDGET *widget, ULONG style)
{
GX_WINDOW *window;
GX_EVENT   my_event;
ULONG      old_style = widget -> gx_widget_style;

    /* Update the widget style.  */
    widget -> gx_widget_style = style;

    if (style & GX_STYLE_TRANSPARENT)
    {
        if (!(widget -> gx_widget_status & GX_STATUS_TRANSPARENT))
        {
            /* If we are changing a window transparency and the window is visible,
               we have to check to see if viewports need to be updated
             */
            if (widget -> gx_widget_type >= GX_TYPE_WINDOW &&
                widget -> gx_widget_status & GX_STATUS_VISIBLE)
            {
                window = (GX_WINDOW *)widget;
                _gx_window_view_update_detect(window);
            }
            widget -> gx_widget_status |= GX_STATUS_TRANSPARENT;
        }
    }
    else
    {
        if (widget -> gx_widget_status & GX_STATUS_TRANSPARENT)
        {
            /* If we are changing a window transparency and the window is visible,
                we have to check to see if viewports need to be updated
             */
            if (widget -> gx_widget_type >= GX_TYPE_WINDOW &&
                widget -> gx_widget_status & GX_STATUS_VISIBLE)
            {
                window = (GX_WINDOW *)widget;
                _gx_window_view_update_detect(window);
            }
            widget -> gx_widget_status &= ~GX_STATUS_TRANSPARENT;
        }
    }

    if (widget -> gx_widget_style & GX_STYLE_ENABLED)
    {
        _gx_widget_status_add(widget, GX_STATUS_SELECTABLE);
    }
    else
    {
        _gx_widget_status_remove(widget, GX_STATUS_SELECTABLE);
    }

    if (widget -> gx_widget_status & GX_STATUS_VISIBLE)
    {
        _gx_system_dirty_mark(widget);
    }

    /* notify widget of style modification */
    memset(&my_event, 0, sizeof(GX_EVENT));
    my_event.gx_event_payload.gx_event_ulongdata = old_style;
    my_event.gx_event_type = GX_EVENT_STYLE_CHANGED;
    my_event.gx_event_target = widget;
    _gx_system_event_fold(&my_event);

    return(GX_SUCCESS);
}