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 /** Drop 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_drop_list.h" 32 33 /**************************************************************************/ 34 /* */ 35 /* FUNCTION RELEASE */ 36 /* */ 37 /* _gx_drop_list_open PORTABLE C */ 38 /* 6.1 */ 39 /* AUTHOR */ 40 /* */ 41 /* Kenneth Maxwell, Microsoft Corporation */ 42 /* */ 43 /* DESCRIPTION */ 44 /* */ 45 /* This service opens a drop list. */ 46 /* */ 47 /* INPUT */ 48 /* */ 49 /* drop_list Drop list control block */ 50 /* */ 51 /* OUTPUT */ 52 /* */ 53 /* status Completion status */ 54 /* */ 55 /* CALLS */ 56 /* */ 57 /* _gx_window_root_find Find the root window */ 58 /* _gx_widget_resize Resize a widget */ 59 /* _gx_vertical_list_children_position Position the children for */ 60 /* the vertical list */ 61 /* _gx_widget_link Link the widget to its root */ 62 /* _gx_system_focus_claim Claim the input focus */ 63 /* */ 64 /* CALLED BY */ 65 /* */ 66 /* _gx_drop_list_event_process */ 67 /* */ 68 /* RELEASE HISTORY */ 69 /* */ 70 /* DATE NAME DESCRIPTION */ 71 /* */ 72 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 73 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 74 /* resulting in version 6.1 */ 75 /* */ 76 /**************************************************************************/ _gx_drop_list_open(GX_DROP_LIST * drop_list)77UINT _gx_drop_list_open(GX_DROP_LIST *drop_list) 78 { 79 GX_WINDOW_ROOT *root; 80 GX_WIDGET *child; 81 GX_RECTANGLE size; 82 GX_VERTICAL_LIST *list = &drop_list -> gx_drop_list_popup.gx_popup_list_list; 83 84 if (list -> gx_widget_status & GX_STATUS_VISIBLE) 85 { 86 drop_list -> gx_drop_list_popup_open = GX_TRUE; 87 return(GX_SUCCESS); 88 } 89 _gx_window_root_find((GX_WIDGET *)drop_list, &root); 90 91 size = drop_list -> gx_widget_size; 92 size.gx_rectangle_top = (GX_VALUE)(size.gx_rectangle_bottom + 1); 93 size.gx_rectangle_bottom = (GX_VALUE)(size.gx_rectangle_top + drop_list -> gx_drop_list_open_height); 94 _gx_widget_resize((GX_WIDGET *)list, &size); 95 _gx_vertical_list_children_position(list); 96 _gx_widget_link((GX_WIDGET *)drop_list -> gx_widget_parent, (GX_WIDGET *)list); 97 98 _gx_vertical_list_selected_widget_get(list, &child); 99 if (child) 100 { 101 child -> gx_widget_style |= GX_STYLE_DRAW_SELECTED; 102 } 103 104 drop_list -> gx_drop_list_popup_open = GX_TRUE; 105 _gx_system_focus_claim((GX_WIDGET *)list); 106 107 return(GX_SUCCESS); 108 } 109 110
