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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_display_driver_generic_glyph_4bpp_draw.c	Lines:	104	104	100.0 %
Date:	2026-03-06 19:21:09	Branches:	40	40	100.0 %


/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 * Copyright (c) 2026-present Eclipse ThreadX contributors
 *
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 *
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** GUIX Component                                                        */
/**                                                                       */
/**   Display Management (Display)                                        */
/**                                                                       */
/**************************************************************************/

#define GX_SOURCE_CODE


/* Include necessary system files.  */

#include "gx_api.h"
#include "gx_system.h"
#include "gx_utility.h"
#include "gx_display.h"

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_display_driver_generic_glyph_4bit_draw          PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function draws the specified text using the current context,   */
/*    clipped to one viewport                                             */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    context                               Draw context                  */
/*    draw_area                             The rectangle where the glyph */
/*                                            is drawn to                 */
/*    map_offset                            Offset from the glyph map     */
/*    glyph                                 The glyph structure           */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    [gx_display_driver_pixel_blend]       Call display driver pixel     */
/*                                            blend function              */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    GUIX internal code                                                  */
/*                                                                        */
/**************************************************************************/
VOID _gx_display_driver_generic_glyph_4bit_draw(GX_DRAW_CONTEXT *context, GX_RECTANGLE *draw_area, GX_POINT *map_offset, GX_CONST GX_GLYPH *glyph)
{
GX_DISPLAY *display;
GX_UBYTE   *glyph_row;
GX_UBYTE   *glyph_data;
UINT        row;
UINT        col;
UINT        pixel_width = 0;
UINT        leading_pixel;
UINT        trailing_pixel;
GX_COLOR    text_color;
UINT        y_height;
GX_UBYTE    alpha;
UINT        pitch;
UINT        index;
VOID        (*blend_func)(GX_DRAW_CONTEXT *context, INT x, INT y, GX_COLOR color, GX_UBYTE alpha);
GX_UBYTE    brush_alpha = 0xff;

#if defined (GX_BRUSH_ALPHA_SUPPORT)
INT         alpha_sum;
    brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;
    if (brush_alpha == 0)
    {
        return;
    }
#endif

    text_color =  context -> gx_draw_context_brush.gx_brush_line_color;
    pixel_width = (UINT)(draw_area -> gx_rectangle_right - draw_area -> gx_rectangle_left + 1);

    /* pickup pointer to current dispaly driver */
    display = context -> gx_draw_context_display;

    if (display -> gx_display_driver_pixel_blend == GX_NULL)
    {
        return;
    }

    /* Find the width of the glyph */
    pitch = glyph -> gx_glyph_width;
    /* Make it byte-aligned. */
    pitch = (pitch + 1) >> 1;

    glyph_row = (GX_UBYTE *)glyph -> gx_glyph_map;

    if (map_offset -> gx_point_y)
    {
        glyph_row = glyph_row + ((INT)pitch * map_offset -> gx_point_y);
    }

    glyph_row += (map_offset -> gx_point_x >> 1);

    y_height = (UINT)(draw_area -> gx_rectangle_bottom - draw_area -> gx_rectangle_top + 1);

    blend_func = display -> gx_display_driver_pixel_blend;

    leading_pixel = (map_offset -> gx_point_x & 1);

    pixel_width -= leading_pixel;

    trailing_pixel = pixel_width & 1;

    pixel_width = pixel_width >> 1;

    if (brush_alpha == 0xff)
    {
        for (row = 0; row < y_height; row++)
        {
            col = 0;
            glyph_data = glyph_row;

            if (leading_pixel)
            {
                alpha = (*glyph_data) & 0x0f;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha << 4));

                if (alpha > 0)
                {
                    blend_func(context,
                        draw_area -> gx_rectangle_left + (GX_VALUE)col,
                        draw_area -> gx_rectangle_top + (GX_VALUE)row,
                        text_color, (GX_UBYTE)alpha);
                }
                col++;
                glyph_data++;
            }

            for (index = 0; index < pixel_width; index++)
            {
                alpha = (*glyph_data) & 0xf0;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha >> 4));

                if (alpha > 0)
                {
                    blend_func(context,
                        draw_area -> gx_rectangle_left + (GX_VALUE)col,
                        draw_area -> gx_rectangle_top + (GX_VALUE)row,
                        text_color, (GX_UBYTE)alpha);
                }
                col++;

                alpha = (*glyph_data) & 0x0f;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha << 4));

                if (alpha > 0)
                {
                    blend_func(context,
                        draw_area -> gx_rectangle_left + (GX_VALUE)col,
                        draw_area -> gx_rectangle_top + (GX_VALUE)row,
                        text_color, (GX_UBYTE)alpha);
                }
                col++;
                glyph_data++;
            }

            if (trailing_pixel)
            {
                alpha = (*glyph_data) & 0xf0;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha >> 4));

                if (alpha > 0)
                {
                    blend_func(context,
                        draw_area -> gx_rectangle_left + (GX_VALUE)col,
                        draw_area -> gx_rectangle_top + (GX_VALUE)row,
                        text_color, (GX_UBYTE)alpha);
                }
            }
            glyph_row += pitch;
        }
    }
#if defined (GX_BRUSH_ALPHA_SUPPORT)
    else
    {
        for (row = 0; row < y_height; row++)
        {
            col = 0;
            glyph_data = glyph_row;

            if (leading_pixel)
            {
                alpha = (*glyph_data) & 0x0f;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha << 4));

                alpha_sum = alpha * brush_alpha / 255;

                if (alpha_sum > 0)
                {
                    blend_func(context,
                        draw_area->gx_rectangle_left + (GX_VALUE)col,
                        draw_area->gx_rectangle_top + (GX_VALUE)row,
                        text_color, (GX_UBYTE)alpha_sum);
                }
                col++;
                glyph_data++;
            }

            for (index = 0; index < pixel_width; index++)
            {
                alpha = (*glyph_data) & 0xf0;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha >> 4));
                alpha_sum = alpha * brush_alpha / 255;

                if (alpha_sum > 0)
                {
                    blend_func(context,
                        draw_area -> gx_rectangle_left + (GX_VALUE)col,
                        draw_area -> gx_rectangle_top + (GX_VALUE)row,
                        text_color, (GX_UBYTE)alpha_sum);
                }
                col++;

                alpha = (*glyph_data) & 0x0f;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha << 4));
                alpha_sum = alpha * brush_alpha / 255;

                if (alpha_sum > 0)
                {
                    blend_func(context,
                        draw_area -> gx_rectangle_left + (GX_VALUE)col,
                        draw_area -> gx_rectangle_top + (GX_VALUE)row,
                        text_color, (GX_UBYTE)alpha_sum);
                }
                col++;
                glyph_data++;
            }

            if (trailing_pixel)
            {
                alpha = (*glyph_data) & 0xf0;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha >> 4));
                alpha_sum = alpha * brush_alpha / 255;

                if (alpha_sum > 0)
                {
                    blend_func(context,
                        draw_area -> gx_rectangle_left + (GX_VALUE)col,
                        draw_area -> gx_rectangle_top + (GX_VALUE)row,
                        text_color, (GX_UBYTE)alpha_sum);
                }
            }
            glyph_row += pitch;
        }
    }
#endif

}



Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
1			/***************************************************************************
2			* Copyright (c) 2024 Microsoft Corporation
3			* Copyright (c) 2026-present Eclipse ThreadX contributors
4			*
5			* This program and the accompanying materials are made available under the
6			* terms of the MIT License which is available at
7			* https://opensource.org/licenses/MIT.
8			*
9			* SPDX-License-Identifier: MIT
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_system.h"
29			#include "gx_utility.h"
30			#include "gx_display.h"
31
32			/**************************************************************************/
33			/* */
34			/* FUNCTION RELEASE */
35			/* */
36			/* _gx_display_driver_generic_glyph_4bit_draw PORTABLE C */
37			/* 6.1 */
38			/* AUTHOR */
39			/* */
40			/* Kenneth Maxwell, Microsoft Corporation */
41			/* */
42			/* DESCRIPTION */
43			/* */
44			/* This function draws the specified text using the current context, */
45			/* clipped to one viewport */
46			/* */
47			/* INPUT */
48			/* */
49			/* context Draw context */
50			/* draw_area The rectangle where the glyph */
51			/* is drawn to */
52			/* map_offset Offset from the glyph map */
53			/* glyph The glyph structure */
54			/* */
55			/* OUTPUT */
56			/* */
57			/* None */
58			/* */
59			/* CALLS */
60			/* */
61			/* [gx_display_driver_pixel_blend] Call display driver pixel */
62			/* blend function */
63			/* */
64			/* CALLED BY */
65			/* */
66			/* GUIX internal code */
67			/* */
68			/**************************************************************************/
69		448976	VOID _gx_display_driver_generic_glyph_4bit_draw(GX_DRAW_CONTEXT context, GX_RECTANGLE draw_area, GX_POINT map_offset, GX_CONST GX_GLYPH glyph)
70			{
71			GX_DISPLAY *display;
72			GX_UBYTE *glyph_row;
73			GX_UBYTE *glyph_data;
74			UINT row;
75			UINT col;
76		448976	UINT pixel_width = 0;
77			UINT leading_pixel;
78			UINT trailing_pixel;
79			GX_COLOR text_color;
80			UINT y_height;
81			GX_UBYTE alpha;
82			UINT pitch;
83			UINT index;
84			VOID (blend_func)(GX_DRAW_CONTEXT context, INT x, INT y, GX_COLOR color, GX_UBYTE alpha);
85		448976	GX_UBYTE brush_alpha = 0xff;
86
87			#if defined (GX_BRUSH_ALPHA_SUPPORT)
88			INT alpha_sum;
89		448976	brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;
90	✓✓	448976	if (brush_alpha == 0)
91			{
92		2964	return;
93			}
94			#endif
95
96		446012	text_color = context -> gx_draw_context_brush.gx_brush_line_color;
97		446012	pixel_width = (UINT)(draw_area -> gx_rectangle_right - draw_area -> gx_rectangle_left + 1);
98
99			/* pickup pointer to current dispaly driver */
100		446012	display = context -> gx_draw_context_display;
101
102	✓✓	446012	if (display -> gx_display_driver_pixel_blend == GX_NULL)
103			{
104		196	return;
105			}
106
107			/* Find the width of the glyph */
108		445816	pitch = glyph -> gx_glyph_width;
109			/* Make it byte-aligned. */
110		445816	pitch = (pitch + 1) >> 1;
111
112		445816	glyph_row = (GX_UBYTE *)glyph -> gx_glyph_map;
113
114	✓✓	445816	if (map_offset -> gx_point_y)
115			{
116		4134	glyph_row = glyph_row + ((INT)pitch * map_offset -> gx_point_y);
117			}
118
119		445816	glyph_row += (map_offset -> gx_point_x >> 1);
120
121		445816	y_height = (UINT)(draw_area -> gx_rectangle_bottom - draw_area -> gx_rectangle_top + 1);
122
123		445816	blend_func = display -> gx_display_driver_pixel_blend;
124
125		445816	leading_pixel = (map_offset -> gx_point_x & 1);
126
127		445816	pixel_width -= leading_pixel;
128
129		445816	trailing_pixel = pixel_width & 1;
130
131		445816	pixel_width = pixel_width >> 1;
132
133	✓✓	445816	if (brush_alpha == 0xff)
134			{
135	✓✓	2747197	for (row = 0; row < y_height; row++)
136			{
137		2521900	col = 0;
138		2521900	glyph_data = glyph_row;
139
140	✓✓	2521900	if (leading_pixel)
141			{
142		6828	alpha = (*glyph_data) & 0x0f;
143		6828	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
144
145	✓✓	6828	if (alpha > 0)
146			{
147		4076	blend_func(context,
148		4076	draw_area -> gx_rectangle_left + (GX_VALUE)col,
149		4076	draw_area -> gx_rectangle_top + (GX_VALUE)row,
150			text_color, (GX_UBYTE)alpha);
151			}
152		6828	col++;
153		6828	glyph_data++;
154			}
155
156	✓✓	11796242	for (index = 0; index < pixel_width; index++)
157			{
158		9274342	alpha = (*glyph_data) & 0xf0;
159		9274342	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
160
161	✓✓	9274342	if (alpha > 0)
162			{
163		4948529	blend_func(context,
164		4948529	draw_area -> gx_rectangle_left + (GX_VALUE)col,
165		4948529	draw_area -> gx_rectangle_top + (GX_VALUE)row,
166			text_color, (GX_UBYTE)alpha);
167			}
168		9274342	col++;
169
170		9274342	alpha = (*glyph_data) & 0x0f;
171		9274342	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
172
173	✓✓	9274342	if (alpha > 0)
174			{
175		5093194	blend_func(context,
176		5093194	draw_area -> gx_rectangle_left + (GX_VALUE)col,
177		5093194	draw_area -> gx_rectangle_top + (GX_VALUE)row,
178			text_color, (GX_UBYTE)alpha);
179			}
180		9274342	col++;
181		9274342	glyph_data++;
182			}
183
184	✓✓	2521900	if (trailing_pixel)
185			{
186		1446213	alpha = (*glyph_data) & 0xf0;
187		1446213	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
188
189	✓✓	1446213	if (alpha > 0)
190			{
191		466142	blend_func(context,
192		466142	draw_area -> gx_rectangle_left + (GX_VALUE)col,
193		466142	draw_area -> gx_rectangle_top + (GX_VALUE)row,
194			text_color, (GX_UBYTE)alpha);
195			}
196			}
197		2521900	glyph_row += pitch;
198			}
199			}
200			#if defined (GX_BRUSH_ALPHA_SUPPORT)
201			else
202			{
203	✓✓	2687188	for (row = 0; row < y_height; row++)
204			{
205		2466669	col = 0;
206		2466669	glyph_data = glyph_row;
207
208	✓✓	2466669	if (leading_pixel)
209			{
210		6828	alpha = (*glyph_data) & 0x0f;
211		6828	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
212
213		6828	alpha_sum = alpha * brush_alpha / 255;
214
215	✓✓	6828	if (alpha_sum > 0)
216			{
217		4072	blend_func(context,
218		4072	draw_area->gx_rectangle_left + (GX_VALUE)col,
219		4072	draw_area->gx_rectangle_top + (GX_VALUE)row,
220		4072	text_color, (GX_UBYTE)alpha_sum);
221			}
222		6828	col++;
223		6828	glyph_data++;
224			}
225
226	✓✓	11478714	for (index = 0; index < pixel_width; index++)
227			{
228		9012045	alpha = (*glyph_data) & 0xf0;
229		9012045	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
230		9012045	alpha_sum = alpha * brush_alpha / 255;
231
232	✓✓	9012045	if (alpha_sum > 0)
233			{
234		4804379	blend_func(context,
235		4804379	draw_area -> gx_rectangle_left + (GX_VALUE)col,
236		4804379	draw_area -> gx_rectangle_top + (GX_VALUE)row,
237		4804379	text_color, (GX_UBYTE)alpha_sum);
238			}
239		9012045	col++;
240
241		9012045	alpha = (*glyph_data) & 0x0f;
242		9012045	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
243		9012045	alpha_sum = alpha * brush_alpha / 255;
244
245	✓✓	9012045	if (alpha_sum > 0)
246			{
247		4962546	blend_func(context,
248		4962546	draw_area -> gx_rectangle_left + (GX_VALUE)col,
249		4962546	draw_area -> gx_rectangle_top + (GX_VALUE)row,
250		4962546	text_color, (GX_UBYTE)alpha_sum);
251			}
252		9012045	col++;
253		9012045	glyph_data++;
254			}
255
256	✓✓	2466669	if (trailing_pixel)
257			{
258		1418227	alpha = (*glyph_data) & 0xf0;
259		1418227	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
260		1418227	alpha_sum = alpha * brush_alpha / 255;
261
262	✓✓	1418227	if (alpha_sum > 0)
263			{
264		456124	blend_func(context,
265		456124	draw_area -> gx_rectangle_left + (GX_VALUE)col,
266		456124	draw_area -> gx_rectangle_top + (GX_VALUE)row,
267		456124	text_color, (GX_UBYTE)alpha_sum);
268			}
269			}
270		2466669	glyph_row += pitch;
271			}
272			}
273			#endif
274
275			}
276