Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_canvas_polygon_draw.c	Lines:	32	32	100.0 %
Date:	2024-12-05 08:52:37	Branches:	20	20	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                                                        */
/**                                                                       */
/**   Canvas Management (Canvas)                                          */
/**                                                                       */
/**************************************************************************/

#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_polygon_draw                             PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This draws a polygon into the current context.                      */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    point_array                           Array of points of the polygon*/
/*                                            terminated by NULL entry.   */
/*    number_of_points                      Number of points of polygon   */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    status                                Completion status             */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _gx_utility_rectangle_define          Define a rectangle            */
/*    _gx_utility_rectangle_overlap_detect  Detect rectangle overlap      */
/*    [gx_display_driver_polygon_draw]      The display driver basic      */
/*                                            polygon drawing routine     */
/*    [gx_display_driver_polygon_fill]      The display driver basic      */
/*                                            polygon drawing routine     */
/*                                                                        */
/*  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    */
/*                                                                        */
/**************************************************************************/
UINT  _gx_canvas_polygon_draw(GX_POINT *point_array, INT number_of_points)
{
GX_DRAW_CONTEXT *context;
GX_DISPLAY      *display;
GX_RECTANGLE     bound;
GX_VIEW         *view;
GX_RECTANGLE     clip_rect;
INT              i;
GX_VALUE         left = point_array[0].gx_point_x;
GX_VALUE         right = point_array[0].gx_point_x;
GX_VALUE         top = point_array[0].gx_point_y;
GX_VALUE         bottom = point_array[0].gx_point_y;
GX_VALUE         width;

    /* Calculate the minumum bounding rectangle. */
    for (i = 1; i < number_of_points; i++)
    {
        if (point_array[i].gx_point_x < left)
        {
            left = point_array[i].gx_point_x;
        }
        if (point_array[i].gx_point_x > right)
        {
            right = point_array[i].gx_point_x;
        }
        if (point_array[i].gx_point_y < top)
        {
            top = point_array[i].gx_point_y;
        }
        if (point_array[i].gx_point_y > bottom)
        {
            bottom = point_array[i].gx_point_y;
        }
    }

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

    width = (GX_VALUE)((context -> gx_draw_context_brush.gx_brush_width + 1) >> 1);

    _gx_utility_rectangle_define(&bound, (GX_VALUE)(left - width), (GX_VALUE)(top - width), (GX_VALUE)(right + width), (GX_VALUE)(bottom + width));

    /* clip the polygon 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;

    /* 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 polygon, do it */
        context -> gx_draw_context_clip = &clip_rect;

        if (context -> gx_draw_context_brush.gx_brush_style & (GX_BRUSH_SOLID_FILL | GX_BRUSH_PIXELMAP_FILL))
        {
            display -> gx_display_driver_polygon_fill(context, point_array, number_of_points);
        }

        if (display -> gx_display_driver_polygon_draw)
        {
            /* Draw polygon. */
            display -> gx_display_driver_polygon_draw(context, point_array, number_of_points);
        }

        view = view -> gx_view_next;
    }

    /* Return successful completion.  */
    return(GX_SUCCESS);
}



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			/** Canvas Management (Canvas) */
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_polygon_draw PORTABLE C */
38			/* 6.1 */
39			/* AUTHOR */
40			/* */
41			/* Kenneth Maxwell, Microsoft Corporation */
42			/* */
43			/* DESCRIPTION */
44			/* */
45			/* This draws a polygon into the current context. */
46			/* */
47			/* INPUT */
48			/* */
49			/* point_array Array of points of the polygon*/
50			/* terminated by NULL entry. */
51			/* number_of_points Number of points of polygon */
52			/* */
53			/* OUTPUT */
54			/* */
55			/* status Completion status */
56			/* */
57			/* CALLS */
58			/* */
59			/* _gx_utility_rectangle_define Define a rectangle */
60			/* _gx_utility_rectangle_overlap_detect Detect rectangle overlap */
61			/* [gx_display_driver_polygon_draw] The display driver basic */
62			/* polygon drawing routine */
63			/* [gx_display_driver_polygon_fill] The display driver basic */
64			/* polygon drawing routine */
65			/* */
66			/* CALLED BY */
67			/* */
68			/* Application Code */
69			/* */
70			/* RELEASE HISTORY */
71			/* */
72			/* DATE NAME DESCRIPTION */
73			/* */
74			/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
75			/* 09-30-2020 Kenneth Maxwell Modified comment(s), */
76			/* resulting in version 6.1 */
77			/* */
78			/**************************************************************************/
79		1446	UINT _gx_canvas_polygon_draw(GX_POINT *point_array, INT number_of_points)
80			{
81			GX_DRAW_CONTEXT *context;
82			GX_DISPLAY *display;
83			GX_RECTANGLE bound;
84			GX_VIEW *view;
85			GX_RECTANGLE clip_rect;
86			INT i;
87		1446	GX_VALUE left = point_array[0].gx_point_x;
88		1446	GX_VALUE right = point_array[0].gx_point_x;
89		1446	GX_VALUE top = point_array[0].gx_point_y;
90		1446	GX_VALUE bottom = point_array[0].gx_point_y;
91			GX_VALUE width;
92
93			/* Calculate the minumum bounding rectangle. */
94	✓✓	9214	for (i = 1; i < number_of_points; i++)
95			{
96	✓✓	7768	if (point_array[i].gx_point_x < left)
97			{
98		294	left = point_array[i].gx_point_x;
99			}
100	✓✓	7768	if (point_array[i].gx_point_x > right)
101			{
102		3177	right = point_array[i].gx_point_x;
103			}
104	✓✓	7768	if (point_array[i].gx_point_y < top)
105			{
106		591	top = point_array[i].gx_point_y;
107			}
108	✓✓	7768	if (point_array[i].gx_point_y > bottom)
109			{
110		1909	bottom = point_array[i].gx_point_y;
111			}
112			}
113
114			/* pick up the current drawing context */
115		1446	context = _gx_system_current_draw_context;
116
117		1446	width = (GX_VALUE)((context -> gx_draw_context_brush.gx_brush_width + 1) >> 1);
118
119		1446	_gx_utility_rectangle_define(&bound, (GX_VALUE)(left - width), (GX_VALUE)(top - width), (GX_VALUE)(right + width), (GX_VALUE)(bottom + width));
120
121			/* clip the polygon bounding box to the dirty rectangle */
122	✓✓	1446	if (!_gx_utility_rectangle_overlap_detect(&bound, &context -> gx_draw_context_dirty, &bound))
123			{
124			/* nothing to draw, return */
125		22	return GX_SUCCESS;
126			}
127
128			/* pick up current display driver */
129		1424	display = context -> gx_draw_context_display;
130
131			/* test to determine if the bounding rectangle overlaps the region we are allowed to draw
132			into. For each view that overlaps the bounding rectangle, do some drawing.
133			*/
134		1424	view = context -> gx_draw_context_view_head;
135
136	✓✓	2863	while (view)
137			{
138	✓✓	1439	if (!_gx_utility_rectangle_overlap_detect(&view -> gx_view_rectangle, &bound, &clip_rect))
139			{
140		16	view = view -> gx_view_next;
141		16	continue;
142			}
143
144			/* we have a view into which we can draw the polygon, do it */
145		1423	context -> gx_draw_context_clip = &clip_rect;
146
147	✓✓	1423	if (context -> gx_draw_context_brush.gx_brush_style & (GX_BRUSH_SOLID_FILL \| GX_BRUSH_PIXELMAP_FILL))
148			{
149		1363	display -> gx_display_driver_polygon_fill(context, point_array, number_of_points);
150			}
151
152	✓✓	1423	if (display -> gx_display_driver_polygon_draw)
153			{
154			/* Draw polygon. */
155		1418	display -> gx_display_driver_polygon_draw(context, point_array, number_of_points);
156			}
157
158		1423	view = view -> gx_view_next;
159			}
160
161			/* Return successful completion. */
162		1424	return(GX_SUCCESS);
163			}
164