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 /** Display Management (Display) */
19 /** */
20 /**************************************************************************/
21
22 #define GX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "gx_api.h"
28 #include "gx_display.h"
29
30 /**************************************************************************/
31 /* */
32 /* FUNCTION RELEASE */
33 /* */
34 /* _gx_display_driver_32bpp_horizontal_line_draw PORTABLE C */
35 /* 6.1 */
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 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
72 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
73 /* resulting in version 6.1 */
74 /* */
75 /**************************************************************************/
_gx_display_driver_32bpp_horizontal_line_draw(GX_DRAW_CONTEXT * context,INT xstart,INT xend,INT ypos,INT width,GX_COLOR color)76 VOID _gx_display_driver_32bpp_horizontal_line_draw(GX_DRAW_CONTEXT *context, INT xstart, INT xend, INT ypos, INT width, GX_COLOR color)
77 {
78 INT row;
79 INT column;
80 ULONG *put;
81 ULONG *rowstart;
82 INT len = xend - xstart + 1;
83
84 #if defined GX_BRUSH_ALPHA_SUPPORT
85 GX_UBYTE alpha;
86
87 alpha = context -> gx_draw_context_brush.gx_brush_alpha;
88 if (alpha == 0)
89 {
90 /* Nothing to drawn. Just return. */
91 return;
92 }
93
94 if (alpha != 0xff)
95 {
96 _gx_display_driver_horizontal_line_alpha_draw(context, xstart, xend, ypos, width, color, alpha);
97 return;
98 }
99 #endif
100
101 /* pick up start address of canvas memory */
102 rowstart = (ULONG *)context -> gx_draw_context_memory;
103
104 /* calculate start of row address */
105 rowstart += context -> gx_draw_context_pitch * ypos;
106
107 /* calculate pixel address */
108 rowstart += xstart;
109 /* draw 1-pixel hi lines to fill width */
110 for (row = 0; row < width; row++)
111 {
112 put = rowstart;
113
114 /* draw one line, left to right */
115 for (column = 0; column < len; column++)
116 {
117 *put++ = (ULONG)color;
118 }
119 rowstart += context -> gx_draw_context_pitch;
120 }
121 }
122
123
