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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:	2024-12-05 08:52:37	Branches:	40	40	100.0 %


/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 *
 * 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                                                  */
/*                                                                        */
/*  RELEASE HISTORY                                                       */
/*                                                                        */
/*    DATE              NAME                      DESCRIPTION             */
/*                                                                        */
/*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
/*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
/*                                            resulting in version 6.1    */
/*                                                                        */
/**************************************************************************/
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			*
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_system.h"
28			#include "gx_utility.h"
29			#include "gx_display.h"
30
31			/**************************************************************************/
32			/* */
33			/* FUNCTION RELEASE */
34			/* */
35			/* _gx_display_driver_generic_glyph_4bit_draw PORTABLE C */
36			/* 6.1 */
37			/* AUTHOR */
38			/* */
39			/* Kenneth Maxwell, Microsoft Corporation */
40			/* */
41			/* DESCRIPTION */
42			/* */
43			/* This function draws the specified text using the current context, */
44			/* clipped to one viewport */
45			/* */
46			/* INPUT */
47			/* */
48			/* context Draw context */
49			/* draw_area The rectangle where the glyph */
50			/* is drawn to */
51			/* map_offset Offset from the glyph map */
52			/* glyph The glyph structure */
53			/* */
54			/* OUTPUT */
55			/* */
56			/* None */
57			/* */
58			/* CALLS */
59			/* */
60			/* [gx_display_driver_pixel_blend] Call display driver pixel */
61			/* blend 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			/**************************************************************************/
76		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)
77			{
78			GX_DISPLAY *display;
79			GX_UBYTE *glyph_row;
80			GX_UBYTE *glyph_data;
81			UINT row;
82			UINT col;
83		448976	UINT pixel_width = 0;
84			UINT leading_pixel;
85			UINT trailing_pixel;
86			GX_COLOR text_color;
87			UINT y_height;
88			GX_UBYTE alpha;
89			UINT pitch;
90			UINT index;
91			VOID (blend_func)(GX_DRAW_CONTEXT context, INT x, INT y, GX_COLOR color, GX_UBYTE alpha);
92		448976	GX_UBYTE brush_alpha = 0xff;
93
94			#if defined (GX_BRUSH_ALPHA_SUPPORT)
95			INT alpha_sum;
96		448976	brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;
97	✓✓	448976	if (brush_alpha == 0)
98			{
99		2964	return;
100			}
101			#endif
102
103		446012	text_color = context -> gx_draw_context_brush.gx_brush_line_color;
104		446012	pixel_width = (UINT)(draw_area -> gx_rectangle_right - draw_area -> gx_rectangle_left + 1);
105
106			/* pickup pointer to current dispaly driver */
107		446012	display = context -> gx_draw_context_display;
108
109	✓✓	446012	if (display -> gx_display_driver_pixel_blend == GX_NULL)
110			{
111		196	return;
112			}
113
114			/* Find the width of the glyph */
115		445816	pitch = glyph -> gx_glyph_width;
116			/* Make it byte-aligned. */
117		445816	pitch = (pitch + 1) >> 1;
118
119		445816	glyph_row = (GX_UBYTE *)glyph -> gx_glyph_map;
120
121	✓✓	445816	if (map_offset -> gx_point_y)
122			{
123		4134	glyph_row = glyph_row + ((INT)pitch * map_offset -> gx_point_y);
124			}
125
126		445816	glyph_row += (map_offset -> gx_point_x >> 1);
127
128		445816	y_height = (UINT)(draw_area -> gx_rectangle_bottom - draw_area -> gx_rectangle_top + 1);
129
130		445816	blend_func = display -> gx_display_driver_pixel_blend;
131
132		445816	leading_pixel = (map_offset -> gx_point_x & 1);
133
134		445816	pixel_width -= leading_pixel;
135
136		445816	trailing_pixel = pixel_width & 1;
137
138		445816	pixel_width = pixel_width >> 1;
139
140	✓✓	445816	if (brush_alpha == 0xff)
141			{
142	✓✓	2747197	for (row = 0; row < y_height; row++)
143			{
144		2521900	col = 0;
145		2521900	glyph_data = glyph_row;
146
147	✓✓	2521900	if (leading_pixel)
148			{
149		6828	alpha = (*glyph_data) & 0x0f;
150		6828	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
151
152	✓✓	6828	if (alpha > 0)
153			{
154		4076	blend_func(context,
155		4076	draw_area -> gx_rectangle_left + (GX_VALUE)col,
156		4076	draw_area -> gx_rectangle_top + (GX_VALUE)row,
157			text_color, (GX_UBYTE)alpha);
158			}
159		6828	col++;
160		6828	glyph_data++;
161			}
162
163	✓✓	11796242	for (index = 0; index < pixel_width; index++)
164			{
165		9274342	alpha = (*glyph_data) & 0xf0;
166		9274342	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
167
168	✓✓	9274342	if (alpha > 0)
169			{
170		4948529	blend_func(context,
171		4948529	draw_area -> gx_rectangle_left + (GX_VALUE)col,
172		4948529	draw_area -> gx_rectangle_top + (GX_VALUE)row,
173			text_color, (GX_UBYTE)alpha);
174			}
175		9274342	col++;
176
177		9274342	alpha = (*glyph_data) & 0x0f;
178		9274342	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
179
180	✓✓	9274342	if (alpha > 0)
181			{
182		5093194	blend_func(context,
183		5093194	draw_area -> gx_rectangle_left + (GX_VALUE)col,
184		5093194	draw_area -> gx_rectangle_top + (GX_VALUE)row,
185			text_color, (GX_UBYTE)alpha);
186			}
187		9274342	col++;
188		9274342	glyph_data++;
189			}
190
191	✓✓	2521900	if (trailing_pixel)
192			{
193		1446213	alpha = (*glyph_data) & 0xf0;
194		1446213	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
195
196	✓✓	1446213	if (alpha > 0)
197			{
198		466142	blend_func(context,
199		466142	draw_area -> gx_rectangle_left + (GX_VALUE)col,
200		466142	draw_area -> gx_rectangle_top + (GX_VALUE)row,
201			text_color, (GX_UBYTE)alpha);
202			}
203			}
204		2521900	glyph_row += pitch;
205			}
206			}
207			#if defined (GX_BRUSH_ALPHA_SUPPORT)
208			else
209			{
210	✓✓	2687188	for (row = 0; row < y_height; row++)
211			{
212		2466669	col = 0;
213		2466669	glyph_data = glyph_row;
214
215	✓✓	2466669	if (leading_pixel)
216			{
217		6828	alpha = (*glyph_data) & 0x0f;
218		6828	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
219
220		6828	alpha_sum = alpha * brush_alpha / 255;
221
222	✓✓	6828	if (alpha_sum > 0)
223			{
224		4072	blend_func(context,
225		4072	draw_area->gx_rectangle_left + (GX_VALUE)col,
226		4072	draw_area->gx_rectangle_top + (GX_VALUE)row,
227		4072	text_color, (GX_UBYTE)alpha_sum);
228			}
229		6828	col++;
230		6828	glyph_data++;
231			}
232
233	✓✓	11478714	for (index = 0; index < pixel_width; index++)
234			{
235		9012045	alpha = (*glyph_data) & 0xf0;
236		9012045	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
237		9012045	alpha_sum = alpha * brush_alpha / 255;
238
239	✓✓	9012045	if (alpha_sum > 0)
240			{
241		4804379	blend_func(context,
242		4804379	draw_area -> gx_rectangle_left + (GX_VALUE)col,
243		4804379	draw_area -> gx_rectangle_top + (GX_VALUE)row,
244		4804379	text_color, (GX_UBYTE)alpha_sum);
245			}
246		9012045	col++;
247
248		9012045	alpha = (*glyph_data) & 0x0f;
249		9012045	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
250		9012045	alpha_sum = alpha * brush_alpha / 255;
251
252	✓✓	9012045	if (alpha_sum > 0)
253			{
254		4962546	blend_func(context,
255		4962546	draw_area -> gx_rectangle_left + (GX_VALUE)col,
256		4962546	draw_area -> gx_rectangle_top + (GX_VALUE)row,
257		4962546	text_color, (GX_UBYTE)alpha_sum);
258			}
259		9012045	col++;
260		9012045	glyph_data++;
261			}
262
263	✓✓	2466669	if (trailing_pixel)
264			{
265		1418227	alpha = (*glyph_data) & 0xf0;
266		1418227	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
267		1418227	alpha_sum = alpha * brush_alpha / 255;
268
269	✓✓	1418227	if (alpha_sum > 0)
270			{
271		456124	blend_func(context,
272		456124	draw_area -> gx_rectangle_left + (GX_VALUE)col,
273		456124	draw_area -> gx_rectangle_top + (GX_VALUE)row,
274		456124	text_color, (GX_UBYTE)alpha_sum);
275			}
276			}
277		2466669	glyph_row += pitch;
278			}
279			}
280			#endif
281
282			}
283