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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_display_driver_generic_circle_draw.c	Lines:	44	44	100.0 %
Date:	2026-03-06 19:21:09	Branches:	26	26	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_circle_draw              PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    Display driver to draw circle.                                      */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    context                               Drawing context               */
/*    xcenter                               x-coord of center of circle   */
/*    ycenter                               y-coord of center of circle   */
/*    r                                     Radius of circle              */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    [gx_display_driver_pixel_blend]       Basic display driver pixel    */
/*                                            blend function              */
/*    _gx_utility_rectangle_point_detect    Detect whether a pixel is     */
/*                                            inside rectangle            */
/*    [gx_display_driver_pixel_write]       Basic display driver pixel    */
/*                                            write function              */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    GUIX Internal Code                                                  */
/*                                                                        */
/**************************************************************************/
#if defined(GX_ARC_DRAWING_SUPPORT)

VOID _gx_display_driver_generic_circle_draw(GX_DRAW_CONTEXT *context, INT xcenter, INT ycenter, UINT r)
{
    /* The circle draw function is implemented from midpoint circle algorithm. */
INT           x;
INT           y;
INT           d;
GX_POINT      point;
INT           sign[4][2] = { {1, 1}, {-1, 1}, {1, -1}, {-1, -1} };
INT           index;

GX_RECTANGLE *clip = context -> gx_draw_context_clip;
GX_DISPLAY   *display = context -> gx_draw_context_display;
GX_BRUSH     *brush = &context -> gx_draw_context_brush;

#if defined(GX_BRUSH_ALPHA_SUPPORT)
GX_UBYTE     brush_alpha = brush -> gx_brush_alpha;

    if (display -> gx_display_driver_pixel_blend == GX_NULL)
    {
        /* Pixel blend function is null means alpha isn't supported in this driver.
           So set alpha value to 0xff to make it draw the original color in case GX_BRUSH_ALPHA_SUPPORT is defined. */
        brush_alpha = 0xff;
    }
    else
    {
        if (brush_alpha == 0)
        {
            /* Nothing to draw here. */
            return;
        }
    }
#endif

    x = 0;
    y = (INT)r;
    d = 5 - (INT)(4 * r);
#if defined (GX_BRUSH_ALPHA_SUPPORT)
    if (brush_alpha != 0xff)
    {
        while (x <= y)
        {
            for (index = 0; index < 4; index++)
            {
                point.gx_point_x = (GX_VALUE)(x * sign[index][0] + xcenter);
                point.gx_point_y = (GX_VALUE)(y * sign[index][1] + ycenter);

                if (_gx_utility_rectangle_point_detect(clip, point))
                {
                    display -> gx_display_driver_pixel_blend(context, point.gx_point_x, point.gx_point_y, brush -> gx_brush_line_color, brush_alpha);
                }

                point.gx_point_x = (GX_VALUE)(y * sign[index][0] + xcenter);
                point.gx_point_y = (GX_VALUE)(x * sign[index][1] + ycenter);

                if (_gx_utility_rectangle_point_detect(clip, point))
                {
                    display -> gx_display_driver_pixel_blend(context, point.gx_point_x, point.gx_point_y, brush -> gx_brush_line_color, brush_alpha);
                }
            }

            if (d < 0)
            {
                d += 8 * x + 12;
            }
            else
            {
                d += 8 * (x - y) + 20;
                y--;
            }
            x++;
        }
    }
    else
    {
#endif
        while (x <= y)
        {
            for (index = 0; index < 4; index++)
            {
                point.gx_point_x = (GX_VALUE)(x * sign[index][0] + xcenter);
                point.gx_point_y = (GX_VALUE)(y * sign[index][1] + ycenter);

                if (_gx_utility_rectangle_point_detect(clip, point))
                {
                    display -> gx_display_driver_pixel_write(context, point.gx_point_x, point.gx_point_y, brush -> gx_brush_line_color);
                }

                point.gx_point_x = (GX_VALUE)(y * sign[index][0] + xcenter);
                point.gx_point_y = (GX_VALUE)(x * sign[index][1] + ycenter);

                if (_gx_utility_rectangle_point_detect(clip, point))
                {
                    display -> gx_display_driver_pixel_write(context, point.gx_point_x, point.gx_point_y, brush -> gx_brush_line_color);
                }
            }

            if (d < 0)
            {
                d += 8 * x + 12;
            }
            else
            {
                d += 8 * (x - y) + 20;
                y--;
            }
            x++;
        }
#if defined (GX_BRUSH_ALPHA_SUPPORT)
    }
#endif
}

#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			/* */
35			/* FUNCTION RELEASE */
36			/* */
37			/* _gx_display_driver_generic_circle_draw PORTABLE C */
38			/* 6.1 */
39			/* AUTHOR */
40			/* */
41			/* Kenneth Maxwell, Microsoft Corporation */
42			/* */
43			/* DESCRIPTION */
44			/* */
45			/* Display driver to draw circle. */
46			/* */
47			/* INPUT */
48			/* */
49			/* context Drawing context */
50			/* xcenter x-coord of center of circle */
51			/* ycenter y-coord of center of circle */
52			/* r Radius of circle */
53			/* */
54			/* OUTPUT */
55			/* */
56			/* None */
57			/* */
58			/* CALLS */
59			/* */
60			/* [gx_display_driver_pixel_blend] Basic display driver pixel */
61			/* blend function */
62			/* _gx_utility_rectangle_point_detect Detect whether a pixel is */
63			/* inside rectangle */
64			/* [gx_display_driver_pixel_write] Basic display driver pixel */
65			/* write function */
66			/* */
67			/* CALLED BY */
68			/* */
69			/* GUIX Internal Code */
70			/* */
71			/**************************************************************************/
72			#if defined(GX_ARC_DRAWING_SUPPORT)
73
74		387	VOID _gx_display_driver_generic_circle_draw(GX_DRAW_CONTEXT *context, INT xcenter, INT ycenter, UINT r)
75			{
76			/* The circle draw function is implemented from midpoint circle algorithm. */
77			INT x;
78			INT y;
79			INT d;
80			GX_POINT point;
81		387	INT sign[4][2] = { {1, 1}, {-1, 1}, {1, -1}, {-1, -1} };
82			INT index;
83
84		387	GX_RECTANGLE *clip = context -> gx_draw_context_clip;
85		387	GX_DISPLAY *display = context -> gx_draw_context_display;
86		387	GX_BRUSH *brush = &context -> gx_draw_context_brush;
87
88			#if defined(GX_BRUSH_ALPHA_SUPPORT)
89		387	GX_UBYTE brush_alpha = brush -> gx_brush_alpha;
90
91	✓✓	387	if (display -> gx_display_driver_pixel_blend == GX_NULL)
92			{
93			/* Pixel blend function is null means alpha isn't supported in this driver.
94			So set alpha value to 0xff to make it draw the original color in case GX_BRUSH_ALPHA_SUPPORT is defined. */
95		52	brush_alpha = 0xff;
96			}
97			else
98			{
99	✓✓	335	if (brush_alpha == 0)
100			{
101			/* Nothing to draw here. */
102		96	return;
103			}
104			}
105			#endif
106
107		291	x = 0;
108		291	y = (INT)r;
109		291	d = 5 - (INT)(4 * r);
110			#if defined (GX_BRUSH_ALPHA_SUPPORT)
111	✓✓	291	if (brush_alpha != 0xff)
112			{
113	✓✓	10188	while (x <= y)
114			{
115	✓✓	50400	for (index = 0; index < 4; index++)
116			{
117		40320	point.gx_point_x = (GX_VALUE)(x * sign[index][0] + xcenter);
118		40320	point.gx_point_y = (GX_VALUE)(y * sign[index][1] + ycenter);
119
120	✓✓	40320	if (_gx_utility_rectangle_point_detect(clip, point))
121			{
122		31776	display -> gx_display_driver_pixel_blend(context, point.gx_point_x, point.gx_point_y, brush -> gx_brush_line_color, brush_alpha);
123			}
124
125		40320	point.gx_point_x = (GX_VALUE)(y * sign[index][0] + xcenter);
126		40320	point.gx_point_y = (GX_VALUE)(x * sign[index][1] + ycenter);
127
128	✓✓	40320	if (_gx_utility_rectangle_point_detect(clip, point))
129			{
130		23040	display -> gx_display_driver_pixel_blend(context, point.gx_point_x, point.gx_point_y, brush -> gx_brush_line_color, brush_alpha);
131			}
132			}
133
134	✓✓	10080	if (d < 0)
135			{
136		5856	d += 8 * x + 12;
137			}
138			else
139			{
140		4224	d += 8 * (x - y) + 20;
141		4224	y--;
142			}
143		10080	x++;
144			}
145			}
146			else
147			{
148			#endif
149	✓✓	16838	while (x <= y)
150			{
151	✓✓	83275	for (index = 0; index < 4; index++)
152			{
153		66620	point.gx_point_x = (GX_VALUE)(x * sign[index][0] + xcenter);
154		66620	point.gx_point_y = (GX_VALUE)(y * sign[index][1] + ycenter);
155
156	✓✓	66620	if (_gx_utility_rectangle_point_detect(clip, point))
157			{
158		56024	display -> gx_display_driver_pixel_write(context, point.gx_point_x, point.gx_point_y, brush -> gx_brush_line_color);
159			}
160
161		66620	point.gx_point_x = (GX_VALUE)(y * sign[index][0] + xcenter);
162		66620	point.gx_point_y = (GX_VALUE)(x * sign[index][1] + ycenter);
163
164	✓✓	66620	if (_gx_utility_rectangle_point_detect(clip, point))
165			{
166		47074	display -> gx_display_driver_pixel_write(context, point.gx_point_x, point.gx_point_y, brush -> gx_brush_line_color);
167			}
168			}
169
170	✓✓	16655	if (d < 0)
171			{
172		9657	d += 8 * x + 12;
173			}
174			else
175			{
176		6998	d += 8 * (x - y) + 20;
177		6998	y--;
178			}
179		16655	x++;
180			}
181			#if defined (GX_BRUSH_ALPHA_SUPPORT)
182			}
183			#endif
184			}
185
186			#endif
187