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
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_display.h"
28
29 /**************************************************************************/
30 /* */
31 /* FUNCTION RELEASE */
32 /* */
33 /* _gx_display_driver_32bpp_rotated_horizontal_line_draw */
34 /* PORTABLE C */
35 /* 6.1.4 */
36 /* AUTHOR */
37 /* */
38 /* Kenneth Maxwell, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* Generic 32bpp color format horizontal line draw function. */
43 /* */
44 /* INPUT */
45 /* */
46 /* context Drawing context */
47 /* xstart x-coord of left endpoint */
48 /* xend x-coord of right endpoint */
49 /* ypos y-coord of line top */
50 /* width Width (height) of the line */
51 /* color Color of line to write */
52 /* */
53 /* OUTPUT */
54 /* */
55 /* NOne */
56 /* */
57 /* CALLS */
58 /* */
59 /* _gx_display_driver_horizontal_line_alpha_draw */
60 /* Basic horizontal line alpha */
61 /* draw function */
62 /* */
63 /* CALLED BY */
64 /* */
65 /* GUIX Internal Code */
66 /* */
67 /* RELEASE HISTORY */
68 /* */
69 /* DATE NAME DESCRIPTION */
70 /* */
71 /* 02-02-2021 Kenneth Maxwell Initial Version 6.1.4 */
72 /* */
73 /**************************************************************************/
_gx_display_driver_32bpp_rotated_horizontal_line_draw(GX_DRAW_CONTEXT * context,INT xstart,INT xend,INT ypos,INT width,GX_COLOR color)74 VOID _gx_display_driver_32bpp_rotated_horizontal_line_draw(GX_DRAW_CONTEXT *context, INT xstart, INT xend, INT ypos, INT width, GX_COLOR color)
75 {
76 INT row;
77 INT column;
78 ULONG *put;
79 ULONG *rowstart;
80 INT len = xend - xstart + 1;
81
82 #if defined GX_BRUSH_ALPHA_SUPPORT
83 GX_UBYTE alpha;
84
85 alpha = context -> gx_draw_context_brush.gx_brush_alpha;
86 if (alpha == 0)
87 {
88 /* Nothing to drawn. Just return. */
89 return;
90 }
91
92 if (alpha != 0xff)
93 {
94 _gx_display_driver_horizontal_line_alpha_draw(context, xstart, xend, ypos, width, color, alpha);
95 return;
96 }
97 #endif
98
99 /* Pick up start address of canvas memory. */
100 rowstart = (ULONG *)context -> gx_draw_context_memory;
101
102 /* Calculate start of row address. */
103 if (context -> gx_draw_context_display -> gx_display_rotation_angle == GX_SCREEN_ROTATION_CW)
104 {
105 rowstart += (context -> gx_draw_context_canvas -> gx_canvas_x_resolution - xstart - 1) * context -> gx_draw_context_pitch;
106 rowstart += ypos;
107 }
108 else
109 {
110 rowstart += xend * context -> gx_draw_context_pitch;
111 rowstart += (context -> gx_draw_context_canvas -> gx_canvas_y_resolution - ypos - width);
112 }
113
114 /* Draw one line, left to right. */
115 for (column = 0; column < len; column++)
116 {
117 put = rowstart;
118
119 /* Draw 1-pixel vertical lines to fill width. */
120 for (row = 0; row < width; row++)
121 {
122 *put++ = (ULONG)color;
123 }
124
125 rowstart -= context -> gx_draw_context_pitch;
126 }
127 }
128
129
