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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_canvas_ellipse_draw.c	Lines:	36	36	100.0 %
Date:	2026-03-06 19:21:09	Branches:	24	24	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"
#include "gx_canvas.h"


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_canvas_ellipse_draw                             PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This draws a ellipse into the currrent context.                     */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    xcenter                               x-coord of center of ellipse  */
/*    ycenter                               y-coord of center of ellipse  */
/*    r                                     Radius of circle              */
/*    a                                     Length of the Semi-major Axis */
/*    b                                     Length of the Semi-minor Axis */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _gx_utility_rectangle_define                                        */
/*    _gx_utility_rectangle_overlap_detect                                */
/*    [gx_display_driver_generic_ellipse_draw]                            */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application code                                                    */
/*                                                                        */
/**************************************************************************/
#if defined(GX_ARC_DRAWING_SUPPORT)
UINT _gx_canvas_ellipse_draw(INT xcenter, INT ycenter, INT a, INT b)
{
GX_DRAW_CONTEXT *context;
GX_DISPLAY      *display;
GX_RECTANGLE     bound;
GX_RECTANGLE     clip_rect;
GX_VIEW         *view;
GX_BRUSH        *brush;
INT              brush_width;
VOID             (*outline_function)(GX_DRAW_CONTEXT *context, INT xcenter, INT ycenter, INT a, INT b);

    /* pick up the current drawing context */
    context = _gx_system_current_draw_context;

    brush = &context -> gx_draw_context_brush;

    brush_width = (brush -> gx_brush_width + 1) >> 1;

    /* Define ellipse bounding rectangle. */
    _gx_utility_rectangle_define(&bound, (GX_VALUE)(xcenter - a - brush_width), (GX_VALUE)(ycenter - b - brush_width),
                                 (GX_VALUE)(xcenter + a + brush_width), (GX_VALUE)(ycenter + b + brush_width));

    brush_width = brush -> gx_brush_width;

    /* clip the ellipse bounding box to the dirty rectangle */
    if (!_gx_utility_rectangle_overlap_detect(&bound, &context -> gx_draw_context_dirty, &bound))
    {
        /* nothing to draw, return */
        return GX_SUCCESS;
    }

    /* pick up current display driver */
    display = context -> gx_draw_context_display;

    /* configure outline function to utilize */
    outline_function = GX_NULL;

    /* Determine which outline function to use.*/
    if(brush_width == 1)
    {
        /* if anti-alias is requested and this is supported by display, use it */
        if ((brush -> gx_brush_style & GX_BRUSH_ALIAS) &&
            display -> gx_display_driver_anti_aliased_ellipse_draw != GX_NULL)
        {
            outline_function = display -> gx_display_driver_anti_aliased_ellipse_draw;
        }
        else
        {
            outline_function = display -> gx_display_driver_ellipse_draw;
        }
    }
    else
    {
        if (brush_width > 1)
        {
            /* if anti-alias is requested and this is supported by display, use it */
            if ((brush -> gx_brush_style & GX_BRUSH_ALIAS) &&
                display -> gx_display_driver_anti_aliased_wide_ellipse_draw != GX_NULL)
            {
                outline_function = display -> gx_display_driver_anti_aliased_wide_ellipse_draw;
            }
            else
            {
                outline_function = display -> gx_display_driver_wide_ellipse_draw;
            }
        }
    }

    /* test to determine if the bounding rectangle overlaps the region we are allowed to draw
       into. For each view that overlaps the bounding rectangle, do some drawing.
     */
    view = context -> gx_draw_context_view_head;

    while (view)
    {
        if (!_gx_utility_rectangle_overlap_detect(&view -> gx_view_rectangle, &bound, &clip_rect))
        {
            view = view -> gx_view_next;
            continue;
        }

        /* we have a view into which we can draw the line, do it */
        GX_RECTANGLE *original_clip = context->gx_draw_context_clip;
        context -> gx_draw_context_clip = &clip_rect;

        if ((brush -> gx_brush_style & (GX_BRUSH_SOLID_FILL | GX_BRUSH_PIXELMAP_FILL)) &&
            display -> gx_display_driver_ellipse_fill)
        {
            /* Call display driver ellipse filling routine.  */
            display -> gx_display_driver_ellipse_fill(context, xcenter, ycenter, a, b);
        }

        if (outline_function)
        {
            outline_function(context, xcenter, ycenter, a, b);
        }

        view = view -> gx_view_next;
        context -> gx_draw_context_clip = original_clip;
    }

    /* Return successful completion.  */
    return(GX_SUCCESS);
}
#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			#include "gx_canvas.h"
32
33
34			/**************************************************************************/
35			/* */
36			/* FUNCTION RELEASE */
37			/* */
38			/* _gx_canvas_ellipse_draw PORTABLE C */
39			/* 6.1 */
40			/* AUTHOR */
41			/* */
42			/* Kenneth Maxwell, Microsoft Corporation */
43			/* */
44			/* DESCRIPTION */
45			/* */
46			/* This draws a ellipse into the currrent context. */
47			/* */
48			/* INPUT */
49			/* */
50			/* xcenter x-coord of center of ellipse */
51			/* ycenter y-coord of center of ellipse */
52			/* r Radius of circle */
53			/* a Length of the Semi-major Axis */
54			/* b Length of the Semi-minor Axis */
55			/* */
56			/* OUTPUT */
57			/* */
58			/* None */
59			/* */
60			/* CALLS */
61			/* */
62			/* _gx_utility_rectangle_define */
63			/* _gx_utility_rectangle_overlap_detect */
64			/* [gx_display_driver_generic_ellipse_draw] */
65			/* */
66			/* CALLED BY */
67			/* */
68			/* Application code */
69			/* */
70			/**************************************************************************/
71			#if defined(GX_ARC_DRAWING_SUPPORT)
72		2814	UINT _gx_canvas_ellipse_draw(INT xcenter, INT ycenter, INT a, INT b)
73			{
74			GX_DRAW_CONTEXT *context;
75			GX_DISPLAY *display;
76			GX_RECTANGLE bound;
77			GX_RECTANGLE clip_rect;
78			GX_VIEW *view;
79			GX_BRUSH *brush;
80			INT brush_width;
81			VOID (outline_function)(GX_DRAW_CONTEXT context, INT xcenter, INT ycenter, INT a, INT b);
82
83			/* pick up the current drawing context */
84		2814	context = _gx_system_current_draw_context;
85
86		2814	brush = &context -> gx_draw_context_brush;
87
88		2814	brush_width = (brush -> gx_brush_width + 1) >> 1;
89
90			/* Define ellipse bounding rectangle. */
91		2814	_gx_utility_rectangle_define(&bound, (GX_VALUE)(xcenter - a - brush_width), (GX_VALUE)(ycenter - b - brush_width),
92		2814	(GX_VALUE)(xcenter + a + brush_width), (GX_VALUE)(ycenter + b + brush_width));
93
94		2814	brush_width = brush -> gx_brush_width;
95
96			/* clip the ellipse bounding box to the dirty rectangle */
97	✓✓	2814	if (!_gx_utility_rectangle_overlap_detect(&bound, &context -> gx_draw_context_dirty, &bound))
98			{
99			/* nothing to draw, return */
100		3	return GX_SUCCESS;
101			}
102
103			/* pick up current display driver */
104		2811	display = context -> gx_draw_context_display;
105
106			/* configure outline function to utilize */
107		2811	outline_function = GX_NULL;
108
109			/* Determine which outline function to use.*/
110	✓✓	2811	if(brush_width == 1)
111			{
112			/* if anti-alias is requested and this is supported by display, use it */
113	✓✓	827	if ((brush -> gx_brush_style & GX_BRUSH_ALIAS) &&
114	✓✓	425	display -> gx_display_driver_anti_aliased_ellipse_draw != GX_NULL)
115			{
116		395	outline_function = display -> gx_display_driver_anti_aliased_ellipse_draw;
117			}
118			else
119			{
120		432	outline_function = display -> gx_display_driver_ellipse_draw;
121			}
122			}
123			else
124			{
125	✓✓	1984	if (brush_width > 1)
126			{
127			/* if anti-alias is requested and this is supported by display, use it */
128	✓✓	1709	if ((brush -> gx_brush_style & GX_BRUSH_ALIAS) &&
129	✓✓	1207	display -> gx_display_driver_anti_aliased_wide_ellipse_draw != GX_NULL)
130			{
131		931	outline_function = display -> gx_display_driver_anti_aliased_wide_ellipse_draw;
132			}
133			else
134			{
135		778	outline_function = display -> gx_display_driver_wide_ellipse_draw;
136			}
137			}
138			}
139
140			/* test to determine if the bounding rectangle overlaps the region we are allowed to draw
141			into. For each view that overlaps the bounding rectangle, do some drawing.
142			*/
143		2811	view = context -> gx_draw_context_view_head;
144
145	✓✓	5631	while (view)
146			{
147	✓✓	2820	if (!_gx_utility_rectangle_overlap_detect(&view -> gx_view_rectangle, &bound, &clip_rect))
148			{
149		12	view = view -> gx_view_next;
150		12	continue;
151			}
152
153			/* we have a view into which we can draw the line, do it */
154		2808	GX_RECTANGLE *original_clip = context->gx_draw_context_clip;
155		2808	context -> gx_draw_context_clip = &clip_rect;
156
157	✓✓	2808	if ((brush -> gx_brush_style & (GX_BRUSH_SOLID_FILL \| GX_BRUSH_PIXELMAP_FILL)) &&
158	✓✓	2406	display -> gx_display_driver_ellipse_fill)
159			{
160			/* Call display driver ellipse filling routine. */
161		2405	display -> gx_display_driver_ellipse_fill(context, xcenter, ycenter, a, b);
162			}
163
164	✓✓	2808	if (outline_function)
165			{
166		2533	outline_function(context, xcenter, ycenter, a, b);
167			}
168
169		2808	view = view -> gx_view_next;
170		2808	context -> gx_draw_context_clip = original_clip;
171			}
172
173			/* Return successful completion. */
174		2811	return(GX_SUCCESS);
175			}
176			#endif
177