GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: gx_vertical_scrollbar_create.c Lines: 30 30 100.0 %
Date: 2024-12-05 08:52:37 Branches: 8 8 100.0 %

Line Branch Exec Source
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/***************************************************************************
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 * Copyright (c) 2024 Microsoft Corporation
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 *
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 * This program and the accompanying materials are made available under the
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 * terms of the MIT License which is available at
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 * https://opensource.org/licenses/MIT.
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 *
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 * SPDX-License-Identifier: MIT
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 **************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/**                                                                       */
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/** GUIX Component                                                        */
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/**                                                                       */
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/**   Scrollbar Management (Scrollbar)                                    */
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/**                                                                       */
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/**************************************************************************/
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#define GX_SOURCE_CODE
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/* Include necessary system files.  */
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#include "gx_api.h"
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#include "gx_widget.h"
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#include "gx_button.h"
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#include "gx_utility.h"
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#include "gx_scrollbar.h"
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#include "gx_system.h"
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#include "gx_window.h"
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/**************************************************************************/
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/*                                                                        */
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/*  FUNCTION                                               RELEASE        */
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/*                                                                        */
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/*    _gx_vertical_scrollbar_create                       PORTABLE C      */
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/*                                                           6.1          */
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/*  AUTHOR                                                                */
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/*                                                                        */
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/*    Kenneth Maxwell, Microsoft Corporation                              */
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/*                                                                        */
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/*  DESCRIPTION                                                           */
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/*                                                                        */
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/*    This service creates a vertical scrollbar.                          */
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/*                                                                        */
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/*  INPUT                                                                 */
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/*                                                                        */
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/*    scrollbar                             Scrollbar control block       */
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/*    name                                  Name of scrollbar             */
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/*    parent                                Pointer to parent widget      */
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/*    appearance                            Appearance of vertical        */
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/*                                            scrollbar widget            */
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/*                                                                        */
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/*  OUTPUT                                                                */
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/*                                                                        */
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/*    status                                Completion status             */
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/*                                                                        */
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/*  CALLS                                                                 */
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/*                                                                        */
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/*    _gx_utility_rectangle_define          Define a rectangle            */
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/*    _gx_system_scroll_appearance_get      Retrieve scroll bar settings  */
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/*    _gx_button_create                     Create a button               */
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/*    _gx_widget_status_add                 Set status bit                */
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/*    _gx_widget_status_remove              Remove status bit             */
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/*    [gx_window_scroll_info_get]           Retrieve widget scroll info   */
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/*    _gx_scroll_thumb_create               Create scroll thumb image     */
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/*    _gx_pixelmap_transparent_detect       Detect whether or not a       */
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/*                                            pixelmap contains           */
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/*                                            transparency information    */
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/*    _gx_widget_link                       Link a widget to its parent   */
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/*    _gx_widget_child_clipping_update      Update child clipping info    */
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/*                                                                        */
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/*  CALLED BY                                                             */
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/*                                                                        */
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/*    Application Code                                                    */
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/*                                                                        */
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/*  RELEASE HISTORY                                                       */
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/*                                                                        */
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/*    DATE              NAME                      DESCRIPTION             */
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/*                                                                        */
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/*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
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/*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
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/*                                            resulting in version 6.1    */
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/*                                                                        */
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/**************************************************************************/
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UINT  _gx_vertical_scrollbar_create(GX_SCROLLBAR *scrollbar, GX_CONST GX_CHAR *name,
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                                    GX_WINDOW *parent, GX_SCROLLBAR_APPEARANCE *appearance, ULONG style)
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{
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GX_RECTANGLE size;
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USHORT       id;
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    _gx_utility_rectangle_define(&size, 0, 0, 0, 0);
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    id = GX_ID_VERTICAL_SCROLL;
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    if (appearance)
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    {
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        scrollbar -> gx_scrollbar_appearance = *appearance;
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    }
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    else
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    {
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        _gx_system_scroll_appearance_get(GX_SCROLLBAR_VERTICAL, &scrollbar -> gx_scrollbar_appearance);
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    }
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    /* make sure style is set correctly */
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    style &= (ULONG)(~GX_SCROLLBAR_HORIZONTAL);
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    style |= GX_SCROLLBAR_VERTICAL;
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    /* Call the base widget create function.  */
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    _gx_widget_create((GX_WIDGET *)scrollbar, name, GX_NULL, style, id, &size);
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    scrollbar -> gx_widget_type = GX_TYPE_VERTICAL_SCROLL;
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    scrollbar -> gx_widget_normal_fill_color = GX_COLOR_ID_SCROLL_FILL;
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    scrollbar -> gx_widget_selected_fill_color = GX_COLOR_ID_SCROLL_FILL;
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    if (style & GX_SCROLLBAR_END_BUTTONS)
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    {
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        /* create the up/left button */
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        _gx_button_create(&scrollbar -> gx_scrollbar_upleft, NULL, (GX_WIDGET *)scrollbar,
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                          GX_STYLE_ENABLED | GX_STYLE_BORDER_RAISED, GX_ID_SCROLL_UP_LEFT, &size);
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        _gx_widget_fill_color_set((GX_WIDGET *)&scrollbar -> gx_scrollbar_upleft,
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                                  scrollbar -> gx_scrollbar_appearance.gx_scroll_button_color,
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                                  scrollbar -> gx_scrollbar_appearance.gx_scroll_button_color,
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                                  scrollbar -> gx_scrollbar_appearance.gx_scroll_button_color);
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        scrollbar -> gx_scrollbar_upleft.gx_widget_status &= ~GX_STATUS_ACCEPTS_FOCUS;
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        /* create the down/right button */
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        _gx_button_create(&scrollbar -> gx_scrollbar_downright, NULL, (GX_WIDGET *)scrollbar,
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                          GX_STYLE_ENABLED | GX_STYLE_BORDER_RAISED, GX_ID_SCROLL_DOWN_RIGHT, &size);
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        _gx_widget_fill_color_set((GX_WIDGET *)&scrollbar -> gx_scrollbar_downright,
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                                  scrollbar -> gx_scrollbar_appearance.gx_scroll_button_color,
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                                  scrollbar -> gx_scrollbar_appearance.gx_scroll_button_color,
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                                  scrollbar -> gx_scrollbar_appearance.gx_scroll_button_color);
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        scrollbar -> gx_scrollbar_downright.gx_widget_status &= ~GX_STATUS_ACCEPTS_FOCUS;
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    }
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    /* scroll-bars have non-client area status and do not accept focus */
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    scrollbar -> gx_widget_status |= GX_STATUS_NONCLIENT;
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    scrollbar -> gx_widget_status &= ~GX_STATUS_ACCEPTS_FOCUS;
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    /* create the thumb button */
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    _gx_scroll_thumb_create(&scrollbar -> gx_scrollbar_thumb, scrollbar,
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                            (ULONG)((scrollbar -> gx_scrollbar_appearance.gx_scroll_thumb_border_style) | GX_SCROLLBAR_VERTICAL) | GX_STYLE_ENABLED);
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    /* initialize the drawing function */
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    scrollbar -> gx_widget_draw_function = (VOID (*)(GX_WIDGET *))_gx_scrollbar_draw;
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    /* initialize the event handler function */
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    scrollbar -> gx_widget_event_process_function = (UINT (*)(GX_WIDGET *, GX_EVENT *))_gx_scrollbar_event_process;
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    /* Determine if a parent widget was provided.  */
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    if (parent)
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    {
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        _gx_widget_link((GX_WIDGET *)parent, (GX_WIDGET *)scrollbar);
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        if (parent -> gx_widget_status & GX_STATUS_VISIBLE)
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        {
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            _gx_widget_child_clipping_update((GX_WIDGET *)parent);
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        }
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    }
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    return(GX_SUCCESS);
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}
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