1 /***************************************************************************
2  * Copyright (c) 2024 Microsoft Corporation
3  *
4  * This program and the accompanying materials are made available under the
5  * terms of the MIT License which is available at
6  * https://opensource.org/licenses/MIT.
7  *
8  * SPDX-License-Identifier: MIT
9  **************************************************************************/
10 
11 
12 /**************************************************************************/
13 /**************************************************************************/
14 /**                                                                       */
15 /** GUIX Component                                                        */
16 /**                                                                       */
17 /**   Text View                                                           */
18 /**                                                                       */
19 /**************************************************************************/
20 
21 #define GX_SOURCE_CODE
22 
23 
24 /* Include necessary system files.  */
25 
26 #include "gx_api.h"
27 #include "gx_system.h"
28 #include "gx_canvas.h"
29 #include "gx_context.h"
30 #include "gx_text_input_cursor.h"
31 
32 /**************************************************************************/
33 /*                                                                        */
34 /*  FUNCTION                                               RELEASE        */
35 /*                                                                        */
36 /*    _gx_text_input_cursor_draw                          PORTABLE C      */
37 /*                                                           6.1          */
38 /*  AUTHOR                                                                */
39 /*                                                                        */
40 /*    Kenneth Maxwell, Microsoft Corporation                              */
41 /*                                                                        */
42 /*  DESCRIPTION                                                           */
43 /*                                                                        */
44 /*    This function calculates the cursor position and draws the cursor   */
45 /*                                                                        */
46 /*  INPUT                                                                 */
47 /*                                                                        */
48 /*    widget                                Widget control block          */
49 /*                                                                        */
50 /*  OUTPUT                                                                */
51 /*                                                                        */
52 /*    None                                                                */
53 /*                                                                        */
54 /*  CALLS                                                                 */
55 /*                                                                        */
56 /*    _gx_canvas_line_draw                  Draw the the specified line   */
57 /*                                          on the current context        */
58 /*                                                                        */
59 /*  CALLED BY                                                             */
60 /*                                                                        */
61 /*    Application Code                                                    */
62 /*    GUIX Internal Code                                                  */
63 /*                                                                        */
64 /*  RELEASE HISTORY                                                       */
65 /*                                                                        */
66 /*    DATE              NAME                      DESCRIPTION             */
67 /*                                                                        */
68 /*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
69 /*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
70 /*                                            resulting in version 6.1    */
71 /*                                                                        */
72 /**************************************************************************/
_gx_text_input_cursor_draw(GX_TEXT_INPUT_CURSOR * cursor_ptr)73 VOID _gx_text_input_cursor_draw(GX_TEXT_INPUT_CURSOR *cursor_ptr)
74 {
75 GX_POINT cursor_pos = cursor_ptr -> gx_text_input_cursor_pos;
76 GX_VALUE y_start;
77 GX_VALUE y_end;
78 
79     if(!cursor_ptr->gx_text_input_cursor_height)
80     {
81         return;
82     }
83 
84     y_start = (GX_VALUE)(cursor_pos.gx_point_y - (cursor_ptr->gx_text_input_cursor_height >> 1));
85     y_end = (GX_VALUE)(y_start + cursor_ptr->gx_text_input_cursor_height - 1);
86 
87     /* Set brush width to cursor width. */
88     _gx_context_brush_width_set((UINT)(cursor_ptr -> gx_text_input_cursor_width));
89 
90     /* Draw cursor line. */
91     _gx_canvas_line_draw(cursor_pos.gx_point_x, y_start, cursor_pos.gx_point_x, y_end);
92 }
93 
94