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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_canvas_ellipse_draw.c	Lines:	34	34	100.0 %
Date:	2024-12-05 08:52:37	Branches:	24	24	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"
#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                                                    */
/*                                                                        */
/*  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    */
/*                                                                        */
/**************************************************************************/
#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 */
        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;
    }

    /* 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			*
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			#include "gx_canvas.h"
31
32
33			/**************************************************************************/
34			/* */
35			/* FUNCTION RELEASE */
36			/* */
37			/* _gx_canvas_ellipse_draw PORTABLE C */
38			/* 6.1 */
39			/* AUTHOR */
40			/* */
41			/* Kenneth Maxwell, Microsoft Corporation */
42			/* */
43			/* DESCRIPTION */
44			/* */
45			/* This draws a ellipse into the currrent context. */
46			/* */
47			/* INPUT */
48			/* */
49			/* xcenter x-coord of center of ellipse */
50			/* ycenter y-coord of center of ellipse */
51			/* r Radius of circle */
52			/* a Length of the Semi-major Axis */
53			/* b Length of the Semi-minor Axis */
54			/* */
55			/* OUTPUT */
56			/* */
57			/* None */
58			/* */
59			/* CALLS */
60			/* */
61			/* _gx_utility_rectangle_define */
62			/* _gx_utility_rectangle_overlap_detect */
63			/* [gx_display_driver_generic_ellipse_draw] */
64			/* */
65			/* CALLED BY */
66			/* */
67			/* Application code */
68			/* */
69			/* RELEASE HISTORY */
70			/* */
71			/* DATE NAME DESCRIPTION */
72			/* */
73			/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
74			/* 09-30-2020 Kenneth Maxwell Modified comment(s), */
75			/* resulting in version 6.1 */
76			/* */
77			/**************************************************************************/
78			#if defined(GX_ARC_DRAWING_SUPPORT)
79		2814	UINT _gx_canvas_ellipse_draw(INT xcenter, INT ycenter, INT a, INT b)
80			{
81			GX_DRAW_CONTEXT *context;
82			GX_DISPLAY *display;
83			GX_RECTANGLE bound;
84			GX_RECTANGLE clip_rect;
85			GX_VIEW *view;
86			GX_BRUSH *brush;
87			INT brush_width;
88			VOID (outline_function)(GX_DRAW_CONTEXT context, INT xcenter, INT ycenter, INT a, INT b);
89
90			/* pick up the current drawing context */
91		2814	context = _gx_system_current_draw_context;
92
93		2814	brush = &context -> gx_draw_context_brush;
94
95		2814	brush_width = (brush -> gx_brush_width + 1) >> 1;
96
97			/* Define ellipse bounding rectangle. */
98		2814	_gx_utility_rectangle_define(&bound, (GX_VALUE)(xcenter - a - brush_width), (GX_VALUE)(ycenter - b - brush_width),
99		2814	(GX_VALUE)(xcenter + a + brush_width), (GX_VALUE)(ycenter + b + brush_width));
100
101		2814	brush_width = brush -> gx_brush_width;
102
103			/* clip the ellipse bounding box to the dirty rectangle */
104	✓✓	2814	if (!_gx_utility_rectangle_overlap_detect(&bound, &context -> gx_draw_context_dirty, &bound))
105			{
106			/* nothing to draw, return */
107		3	return GX_SUCCESS;
108			}
109
110			/* pick up current display driver */
111		2811	display = context -> gx_draw_context_display;
112
113			/* configure outline function to utilize */
114		2811	outline_function = GX_NULL;
115
116			/* Determine which outline function to use.*/
117	✓✓	2811	if(brush_width == 1)
118			{
119			/* if anti-alias is requested and this is supported by display, use it */
120	✓✓	827	if ((brush -> gx_brush_style & GX_BRUSH_ALIAS) &&
121	✓✓	425	display -> gx_display_driver_anti_aliased_ellipse_draw != GX_NULL)
122			{
123		395	outline_function = display -> gx_display_driver_anti_aliased_ellipse_draw;
124			}
125			else
126			{
127		432	outline_function = display -> gx_display_driver_ellipse_draw;
128			}
129			}
130			else
131			{
132	✓✓	1984	if (brush_width > 1)
133			{
134			/* if anti-alias is requested and this is supported by display, use it */
135	✓✓	1709	if ((brush -> gx_brush_style & GX_BRUSH_ALIAS) &&
136	✓✓	1207	display -> gx_display_driver_anti_aliased_wide_ellipse_draw != GX_NULL)
137			{
138		931	outline_function = display -> gx_display_driver_anti_aliased_wide_ellipse_draw;
139			}
140			else
141			{
142		778	outline_function = display -> gx_display_driver_wide_ellipse_draw;
143			}
144			}
145			}
146
147			/* test to determine if the bounding rectangle overlaps the region we are allowed to draw
148			into. For each view that overlaps the bounding rectangle, do some drawing.
149			*/
150		2811	view = context -> gx_draw_context_view_head;
151
152	✓✓	5631	while (view)
153			{
154	✓✓	2820	if (!_gx_utility_rectangle_overlap_detect(&view -> gx_view_rectangle, &bound, &clip_rect))
155			{
156		12	view = view -> gx_view_next;
157		12	continue;
158			}
159
160			/* we have a view into which we can draw the line, do it */
161		2808	context -> gx_draw_context_clip = &clip_rect;
162
163	✓✓	2808	if ((brush -> gx_brush_style & (GX_BRUSH_SOLID_FILL \| GX_BRUSH_PIXELMAP_FILL)) &&
164	✓✓	2406	display -> gx_display_driver_ellipse_fill)
165			{
166			/* Call display driver ellipse filling routine. */
167		2405	display -> gx_display_driver_ellipse_fill(context, xcenter, ycenter, a, b);
168			}
169
170	✓✓	2808	if (outline_function)
171			{
172		2533	outline_function(context, xcenter, ycenter, a, b);
173			}
174
175		2808	view = view -> gx_view_next;
176			}
177
178			/* Return successful completion. */
179		2811	return(GX_SUCCESS);
180			}
181			#endif
182