1 /**************************************************************************/ 2 /* */ 3 /* Copyright (c) Microsoft Corporation. All rights reserved. */ 4 /* */ 5 /* This software is licensed under the Microsoft Software License */ 6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */ 7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ 8 /* and in the root directory of this software. */ 9 /* */ 10 /**************************************************************************/ 11 12 13 /**************************************************************************/ 14 /**************************************************************************/ 15 /** */ 16 /** GUIX Component */ 17 /** */ 18 /** Horizontal List (List) */ 19 /** */ 20 /**************************************************************************/ 21 22 #define GX_SOURCE_CODE 23 24 25 /* Include necessary system files. */ 26 27 #include "gx_api.h" 28 #include "gx_widget.h" 29 #include "gx_window.h" 30 #include "gx_system.h" 31 #include "gx_scrollbar.h" 32 33 /**************************************************************************/ 34 /* */ 35 /* FUNCTION RELEASE */ 36 /* */ 37 /* _gx_horizontal_list_selected_visible PORTABLE C */ 38 /* 6.1 */ 39 /* AUTHOR */ 40 /* */ 41 /* Kenneth Maxwell, Microsoft Corporation */ 42 /* */ 43 /* DESCRIPTION */ 44 /* */ 45 /* This service sets the list entry at the current list index. */ 46 /* */ 47 /* INPUT */ 48 /* */ 49 /* horizontal_list Horizontal list widget */ 50 /* control block */ 51 /* list_entry Pointer to new list entry */ 52 /* */ 53 /* OUTPUT */ 54 /* */ 55 /* status Completion status */ 56 /* */ 57 /* CALLS */ 58 /* */ 59 /* _gx_widget_event_generate Creates a new GX_EVENT */ 60 /* _gx_system_dirty_mark Mark the widget dirty */ 61 /* */ 62 /* CALLED BY */ 63 /* */ 64 /* _gx_horizontal_list_event_process */ 65 /* */ 66 /* RELEASE HISTORY */ 67 /* */ 68 /* DATE NAME DESCRIPTION */ 69 /* */ 70 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 71 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 72 /* resulting in version 6.1 */ 73 /* */ 74 /**************************************************************************/ _gx_horizontal_list_selected_visible(GX_HORIZONTAL_LIST * list,GX_WIDGET * child)75VOID _gx_horizontal_list_selected_visible(GX_HORIZONTAL_LIST *list, GX_WIDGET *child) 76 { 77 GX_SCROLLBAR *pScroll; 78 GX_BOOL update_scroll = GX_FALSE; 79 80 if (child -> gx_widget_size.gx_rectangle_left < list -> gx_window_client.gx_rectangle_left) 81 { 82 /* need to scroll children down */ 83 _gx_horizontal_list_scroll(list, list -> gx_window_client.gx_rectangle_left - child -> gx_widget_size.gx_rectangle_left); 84 update_scroll = GX_TRUE; 85 } 86 else 87 { 88 if (child -> gx_widget_size.gx_rectangle_right > list -> gx_window_client.gx_rectangle_right) 89 { 90 /* need to scroll children up */ 91 _gx_horizontal_list_scroll(list, list -> gx_window_client.gx_rectangle_right - child -> gx_widget_size.gx_rectangle_right); 92 update_scroll = GX_TRUE; 93 } 94 } 95 96 if (update_scroll) 97 { 98 _gx_window_scrollbar_find((GX_WINDOW *)list, GX_TYPE_HORIZONTAL_SCROLL, &pScroll); 99 100 if (pScroll) 101 { 102 _gx_scrollbar_reset(pScroll, GX_NULL); 103 } 104 } 105 } 106 107
