Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_canvas_pie_draw.c	Lines:	56	56	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"
#include "gx_canvas.h"

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_canvas_pie_draw                                 PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This draws a pie into the currrent context.                         */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    xcenter                               x-coord of center of circle   */
/*                                            arc                         */
/*    ycenter                               y-coord of center of circle   */
/*                                            arc                         */
/*    r                                     Radius of circle arc          */
/*    start_angle                           The start angle of circle arc */
/*    end_angle                             The end angle of circle arc   */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _gx_utility_rectangle_define          Define a rectangle            */
/*    _gx_utility_rectangle_overlap_detect  Detect rectangle overlap      */
/*    [gx_display_driver_pie_fill]          Display driver basic          */
/*                                            pie drawing routine         */
/*    [gx_display_driver_arc_draw]          Display driver basic          */
/*                                            arc drawing routine         */
/*    _gx_display_driver_anti_aliased_arc_draw                            */
/*                                          Display driver basic aliased  */
/*                                            arc drawing routine         */
/*    _gx_utility_circle_point_get          Get point position on a circle*/
/*    _gx_canvas_line_draw                  Draw a line                   */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application code                                                    */
/*                                                                        */
/**************************************************************************/
#if defined(GX_ARC_DRAWING_SUPPORT)
UINT _gx_canvas_pie_draw(INT xcenter, INT ycenter, UINT r, INT start_angle, INT end_angle)
{
/* A pie is a fraction of a circle delimited by two lines that span from the center of the
   circle to the one side each. */

GX_DRAW_CONTEXT *context;
GX_DISPLAY      *display;
GX_RECTANGLE     bound;
GX_RECTANGLE     clip_rect;
GX_VIEW         *view;
GX_BRUSH        *brush;
GX_POINT         point;
INT              brush_width;
VOID             (*outline_function)(GX_DRAW_CONTEXT *context, INT xcenter, INT ycenter, UINT r, INT start_angle, INT end_angle);

#if defined(GX_BRUSH_ALPHA_SUPPORT)
GX_UBYTE brush_alpha;
#endif

    while (start_angle < 0)
    {
        start_angle += 360;
    }

    while (end_angle < 0)
    {
        end_angle += 360;
    }

    if (start_angle >= 360)
    {
        start_angle %= 360;
    }

    if (end_angle >= 360)
    {
        end_angle %= 360;
    }

    if (end_angle <= start_angle)
    {
        end_angle += 360;
    }
    /* pick up the current drawing context */
    context = _gx_system_current_draw_context;

    brush = &context -> gx_draw_context_brush;

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

    /* Define pie bounding rectangle. */
    _gx_utility_rectangle_define(&bound, (GX_VALUE)(xcenter - (INT)r - brush_width), (GX_VALUE)(ycenter - (INT)r - brush_width),
                                 (GX_VALUE)(xcenter + (INT)r + brush_width), (GX_VALUE)(ycenter + (INT)r + brush_width));

    brush_width = brush -> gx_brush_width;


    /* clip the pie 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;

    /* Determine 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_arc_draw != GX_NULL)
        {
            outline_function = display -> gx_display_driver_anti_aliased_arc_draw;
        }
        else
        {
            /* otherwise use non-aliased outline */
            outline_function = display -> gx_display_driver_arc_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_arc_draw)
            {
                outline_function = display -> gx_display_driver_anti_aliased_wide_arc_draw;
            }
            else
            {
                /* otherwise use non-aliased outline */
                outline_function = display -> gx_display_driver_wide_arc_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 arc, do it */
        context -> gx_draw_context_clip = &clip_rect;

        if (brush_width)
        {
            brush_width -= 1;
            brush_width >>= 1;
        }

        if ((brush -> gx_brush_style & (GX_BRUSH_SOLID_FILL | GX_BRUSH_PIXELMAP_FILL)) &&
            (r > (UINT)brush_width))
        {
            display -> gx_display_driver_pie_fill(context, xcenter, ycenter, r - (UINT)brush_width, start_angle, end_angle);
        }

#if defined(GX_BRUSH_ALPHA_SUPPORT)
        brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;
        if (brush -> gx_brush_width > 1)
        {
            context -> gx_draw_context_brush.gx_brush_alpha = GX_ALPHA_VALUE_OPAQUE;
        }
#endif
        if (outline_function)
        {
            outline_function(context, xcenter, ycenter, r, start_angle, end_angle);
        }

        if (r > (UINT)brush_width)
        {
            _gx_utility_circle_point_get(xcenter, ycenter, r - (UINT)brush_width, start_angle, &point);

            /* Draw delimiting line. */
            _gx_canvas_line_draw((GX_VALUE)xcenter, (GX_VALUE)ycenter, point.gx_point_x, point.gx_point_y);

            _gx_utility_circle_point_get(xcenter, ycenter, r - (UINT)brush_width, end_angle, &point);

            /* Draw delimiting line. */
            _gx_canvas_line_draw((GX_VALUE)xcenter, (GX_VALUE)ycenter, point.gx_point_x, point.gx_point_y);
        }

#if defined(GX_BRUSH_ALPHA_SUPPORT)
        context -> gx_draw_context_brush.gx_brush_alpha = brush_alpha;
#endif
        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			* 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			/* FUNCTION RELEASE */
36			/* */
37			/* _gx_canvas_pie_draw PORTABLE C */
38			/* 6.1 */
39			/* AUTHOR */
40			/* */
41			/* Kenneth Maxwell, Microsoft Corporation */
42			/* */
43			/* DESCRIPTION */
44			/* */
45			/* This draws a pie into the currrent context. */
46			/* */
47			/* INPUT */
48			/* */
49			/* xcenter x-coord of center of circle */
50			/* arc */
51			/* ycenter y-coord of center of circle */
52			/* arc */
53			/* r Radius of circle arc */
54			/* start_angle The start angle of circle arc */
55			/* end_angle The end angle of circle arc */
56			/* */
57			/* OUTPUT */
58			/* */
59			/* None */
60			/* */
61			/* CALLS */
62			/* */
63			/* _gx_utility_rectangle_define Define a rectangle */
64			/* _gx_utility_rectangle_overlap_detect Detect rectangle overlap */
65			/* [gx_display_driver_pie_fill] Display driver basic */
66			/* pie drawing routine */
67			/* [gx_display_driver_arc_draw] Display driver basic */
68			/* arc drawing routine */
69			/* _gx_display_driver_anti_aliased_arc_draw */
70			/* Display driver basic aliased */
71			/* arc drawing routine */
72			/* _gx_utility_circle_point_get Get point position on a circle*/
73			/* _gx_canvas_line_draw Draw a line */
74			/* */
75			/* CALLED BY */
76			/* */
77			/* Application code */
78			/* */
79			/**************************************************************************/
80			#if defined(GX_ARC_DRAWING_SUPPORT)
81		2703	UINT _gx_canvas_pie_draw(INT xcenter, INT ycenter, UINT r, INT start_angle, INT end_angle)
82			{
83			/* A pie is a fraction of a circle delimited by two lines that span from the center of the
84			circle to the one side each. */
85
86			GX_DRAW_CONTEXT *context;
87			GX_DISPLAY *display;
88			GX_RECTANGLE bound;
89			GX_RECTANGLE clip_rect;
90			GX_VIEW *view;
91			GX_BRUSH *brush;
92			GX_POINT point;
93			INT brush_width;
94			VOID (outline_function)(GX_DRAW_CONTEXT context, INT xcenter, INT ycenter, UINT r, INT start_angle, INT end_angle);
95
96			#if defined(GX_BRUSH_ALPHA_SUPPORT)
97			GX_UBYTE brush_alpha;
98			#endif
99
100	✓✓	2867	while (start_angle < 0)
101			{
102		164	start_angle += 360;
103			}
104
105	✓✓	2751	while (end_angle < 0)
106			{
107		48	end_angle += 360;
108			}
109
110	✓✓	2703	if (start_angle >= 360)
111			{
112		408	start_angle %= 360;
113			}
114
115	✓✓	2703	if (end_angle >= 360)
116			{
117		600	end_angle %= 360;
118			}
119
120	✓✓	2703	if (end_angle <= start_angle)
121			{
122		620	end_angle += 360;
123			}
124			/* pick up the current drawing context */
125		2703	context = _gx_system_current_draw_context;
126
127		2703	brush = &context -> gx_draw_context_brush;
128
129		2703	brush_width = ((INT)(brush -> gx_brush_width + 1)) >> 1;
130
131			/* Define pie bounding rectangle. */
132		2703	_gx_utility_rectangle_define(&bound, (GX_VALUE)(xcenter - (INT)r - brush_width), (GX_VALUE)(ycenter - (INT)r - brush_width),
133		2703	(GX_VALUE)(xcenter + (INT)r + brush_width), (GX_VALUE)(ycenter + (INT)r + brush_width));
134
135		2703	brush_width = brush -> gx_brush_width;
136
137
138			/* clip the pie bounding box to the dirty rectangle */
139	✓✓	2703	if (!_gx_utility_rectangle_overlap_detect(&bound, &context -> gx_draw_context_dirty, &bound))
140			{
141			/* nothing to draw, return */
142		4	return GX_SUCCESS;
143			}
144
145			/* pick up current display driver */
146		2699	display = context -> gx_draw_context_display;
147
148			/* Determine outline function to utilize.*/
149		2699	outline_function = GX_NULL;
150
151			/* Determine which outline function to use.*/
152	✓✓	2699	if (brush_width == 1)
153			{
154			/* if anti-alias is requested and this is supported by display, use it */
155	✓✓	677	if ((brush -> gx_brush_style & GX_BRUSH_ALIAS) &&
156	✓✓	496	display -> gx_display_driver_anti_aliased_arc_draw != GX_NULL)
157			{
158		368	outline_function = display -> gx_display_driver_anti_aliased_arc_draw;
159			}
160			else
161			{
162			/* otherwise use non-aliased outline */
163		309	outline_function = display -> gx_display_driver_arc_draw;
164			}
165			}
166			else
167			{
168	✓✓	2022	if (brush_width > 1)
169			{
170			/* if anti-alias is requested and this is supported by display, use it */
171	✓✓	1604	if ((brush -> gx_brush_style & GX_BRUSH_ALIAS) &&
172	✓✓	1288	display -> gx_display_driver_anti_aliased_wide_arc_draw)
173			{
174		1024	outline_function = display -> gx_display_driver_anti_aliased_wide_arc_draw;
175			}
176			else
177			{
178			/* otherwise use non-aliased outline */
179		580	outline_function = display -> gx_display_driver_wide_arc_draw;
180			}
181			}
182			}
183
184			/* test to determine if the bounding rectangle overlaps the region we are allowed to draw
185			into. For each view that overlaps the bounding rectangle, do some drawing.
186			*/
187		2699	view = context -> gx_draw_context_view_head;
188
189	✓✓	5410	while (view)
190			{
191	✓✓	2711	if (!_gx_utility_rectangle_overlap_detect(&view -> gx_view_rectangle, &bound, &clip_rect))
192			{
193		16	view = view -> gx_view_next;
194		16	continue;
195			}
196
197			/* we have a view into which we can draw the arc, do it */
198		2695	context -> gx_draw_context_clip = &clip_rect;
199
200	✓✓	2695	if (brush_width)
201			{
202		2277	brush_width -= 1;
203		2277	brush_width >>= 1;
204			}
205
206	✓✓	2695	if ((brush -> gx_brush_style & (GX_BRUSH_SOLID_FILL \| GX_BRUSH_PIXELMAP_FILL)) &&
207	✓✓	2351	(r > (UINT)brush_width))
208			{
209		2159	display -> gx_display_driver_pie_fill(context, xcenter, ycenter, r - (UINT)brush_width, start_angle, end_angle);
210			}
211
212			#if defined(GX_BRUSH_ALPHA_SUPPORT)
213		2695	brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;
214	✓✓	2695	if (brush -> gx_brush_width > 1)
215			{
216		1600	context -> gx_draw_context_brush.gx_brush_alpha = GX_ALPHA_VALUE_OPAQUE;
217			}
218			#endif
219	✓✓	2695	if (outline_function)
220			{
221		2277	outline_function(context, xcenter, ycenter, r, start_angle, end_angle);
222			}
223
224	✓✓	2695	if (r > (UINT)brush_width)
225			{
226		2439	_gx_utility_circle_point_get(xcenter, ycenter, r - (UINT)brush_width, start_angle, &point);
227
228			/* Draw delimiting line. */
229		2439	_gx_canvas_line_draw((GX_VALUE)xcenter, (GX_VALUE)ycenter, point.gx_point_x, point.gx_point_y);
230
231		2439	_gx_utility_circle_point_get(xcenter, ycenter, r - (UINT)brush_width, end_angle, &point);
232
233			/* Draw delimiting line. */
234		2439	_gx_canvas_line_draw((GX_VALUE)xcenter, (GX_VALUE)ycenter, point.gx_point_x, point.gx_point_y);
235			}
236
237			#if defined(GX_BRUSH_ALPHA_SUPPORT)
238		2695	context -> gx_draw_context_brush.gx_brush_alpha = brush_alpha;
239			#endif
240		2695	view = view -> gx_view_next;
241			}
242
243			/* Return successful completion. */
244		2699	return(GX_SUCCESS);
245			}
246
247			#endif
248