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 /**   Text View                                                           */
19 /**                                                                       */
20 /**************************************************************************/
21 
22 #define GX_SOURCE_CODE
23 
24 
25 /* Include necessary system files.  */
26 
27 #include "gx_api.h"
28 #include "gx_system.h"
29 #include "gx_canvas.h"
30 #include "gx_context.h"
31 #include "gx_text_input_cursor.h"
32 
33 /**************************************************************************/
34 /*                                                                        */
35 /*  FUNCTION                                               RELEASE        */
36 /*                                                                        */
37 /*    _gx_text_input_cursor_draw                          PORTABLE C      */
38 /*                                                           6.1          */
39 /*  AUTHOR                                                                */
40 /*                                                                        */
41 /*    Kenneth Maxwell, Microsoft Corporation                              */
42 /*                                                                        */
43 /*  DESCRIPTION                                                           */
44 /*                                                                        */
45 /*    This function calculates the cursor position and draws the cursor   */
46 /*                                                                        */
47 /*  INPUT                                                                 */
48 /*                                                                        */
49 /*    widget                                Widget control block          */
50 /*                                                                        */
51 /*  OUTPUT                                                                */
52 /*                                                                        */
53 /*    None                                                                */
54 /*                                                                        */
55 /*  CALLS                                                                 */
56 /*                                                                        */
57 /*    _gx_canvas_line_draw                  Draw the the specified line   */
58 /*                                          on the current context        */
59 /*                                                                        */
60 /*  CALLED BY                                                             */
61 /*                                                                        */
62 /*    Application Code                                                    */
63 /*    GUIX Internal Code                                                  */
64 /*                                                                        */
65 /*  RELEASE HISTORY                                                       */
66 /*                                                                        */
67 /*    DATE              NAME                      DESCRIPTION             */
68 /*                                                                        */
69 /*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
70 /*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
71 /*                                            resulting in version 6.1    */
72 /*                                                                        */
73 /**************************************************************************/
_gx_text_input_cursor_draw(GX_TEXT_INPUT_CURSOR * cursor_ptr)74 VOID _gx_text_input_cursor_draw(GX_TEXT_INPUT_CURSOR *cursor_ptr)
75 {
76 GX_POINT cursor_pos = cursor_ptr -> gx_text_input_cursor_pos;
77 GX_VALUE y_start;
78 GX_VALUE y_end;
79 
80     if(!cursor_ptr->gx_text_input_cursor_height)
81     {
82         return;
83     }
84 
85     y_start = (GX_VALUE)(cursor_pos.gx_point_y - (cursor_ptr->gx_text_input_cursor_height >> 1));
86     y_end = (GX_VALUE)(y_start + cursor_ptr->gx_text_input_cursor_height - 1);
87 
88     /* Set brush width to cursor width. */
89     _gx_context_brush_width_set((UINT)(cursor_ptr -> gx_text_input_cursor_width));
90 
91     /* Draw cursor line. */
92     _gx_canvas_line_draw(cursor_pos.gx_point_x, y_start, cursor_pos.gx_point_x, y_end);
93 }
94 
95