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 /** Display Management (Display) */
18 /** */
19 /**************************************************************************/
20 #define GX_SOURCE_CODE
21 /* Include necessary system files. */
22
23 #include "gx_api.h"
24 #include "gx_display.h"
25
26 /**************************************************************************/
27 /* */
28 /* FUNCTION RELEASE */
29 /* */
30 /* _gx_display_driver_8bpp_rotated_horizontal_line_draw */
31 /* PORTABLE C */
32 /* 6.1.4 */
33 /* AUTHOR */
34 /* */
35 /* Kenneth Maxwell, Microsoft Corporation */
36 /* */
37 /* DESCRIPTION */
38 /* */
39 /* Generic 8bpp color format rotated horizontal line draw function. */
40 /* */
41 /* INPUT */
42 /* */
43 /* context Drawing context */
44 /* xstart x-coord of left endpoint */
45 /* xend x-coord of right endpoint */
46 /* ypos y-coord of line top */
47 /* width Width (height) of the line */
48 /* color Color of line to write */
49 /* */
50 /* OUTPUT */
51 /* */
52 /* NOne */
53 /* */
54 /* CALLS */
55 /* */
56 /* None */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* GUIX Internal Code */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 02-02-2021 Kenneth Maxwell Initial Version 6.1.4 */
67 /* */
68 /**************************************************************************/
_gx_display_driver_8bpp_rotated_horizontal_line_draw(GX_DRAW_CONTEXT * context,INT xstart,INT xend,INT ypos,INT width,GX_COLOR color)69 VOID _gx_display_driver_8bpp_rotated_horizontal_line_draw(GX_DRAW_CONTEXT *context, INT xstart, INT xend, INT ypos, INT width, GX_COLOR color)
70 {
71 INT row;
72 INT column;
73 GX_UBYTE *put;
74 GX_UBYTE *rowstart;
75 INT len = xend - xstart + 1;
76
77 /* Pick up start address of canvas memory. */
78 rowstart = (GX_UBYTE *)context -> gx_draw_context_memory;
79
80 /* Calculate start of row address. */
81 if (context -> gx_draw_context_display -> gx_display_rotation_angle == GX_SCREEN_ROTATION_CW)
82 {
83 rowstart += (context -> gx_draw_context_canvas -> gx_canvas_x_resolution - xstart - 1) * context -> gx_draw_context_pitch;
84 rowstart += ypos;
85 }
86 else
87 {
88 rowstart += xend * context -> gx_draw_context_pitch;
89 rowstart += (context -> gx_draw_context_canvas -> gx_canvas_y_resolution - ypos - width);
90 }
91
92 /* Draw one line, left to right. */
93 for (column = 0; column < len; column++)
94 {
95 put = rowstart;
96
97 /* Draw pixel to fill width. */
98 for (row = 0; row < width; row++)
99 {
100 *put++ = (GX_UBYTE)color;
101 }
102 rowstart -= context -> gx_draw_context_pitch;
103 }
104 }
105
106
