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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_display_driver_565rgb_rotated_glyph_1bit_draw.c	Lines:	109	109	100.0 %
Date:	2026-03-06 19:21:09	Branches:	76	76	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"

#define DRAW_PIXEL  if (alpha & mask) \
    {                                 \
        *put = text_color;            \
    }                                 \
    put++;                            \
    mask = mask >> 1;

#if defined(GX_BRUSH_ALPHA_SUPPORT)
#define BLEND_PIXEL if (alpha & mask)                             \
    {                                                             \
        blend_func(context, xval, yval, text_color, brush_alpha); \
    }                                                             \
    xval++;                                                       \
    mask = mask >> 1;
#endif

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_display_driver_565rgb_rotated_glyph_1bit_draw   PORTABLE C      */
/*                                                           6.1.3        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This functions draw monochrome font on 16bpp canvas, clipped to     */
/*    one viewport.                                                       */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    context                               Draw context                  */
/*    draw_area                             The region bound by the       */
/*                                            rectangle where the glyph   */
/*                                            is drawn                    */
/*    map_offset                            X,Y offset into the glyph map */
/*    glyph                                 Pointer to the glyph          */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    [gx_display_driver_pixel_blend]       Basic display driver pixel    */
/*                                            blend function              */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    GUIX internal code                                                  */
/*                                                                        */
/**************************************************************************/
VOID _gx_display_driver_565rgb_rotated_glyph_1bit_draw(GX_DRAW_CONTEXT *context, GX_RECTANGLE *draw_area, GX_POINT *map_offset, GX_CONST GX_GLYPH *glyph)
{
/* GX_DISPLAY      *display;*/
GX_UBYTE *glyph_row;
GX_UBYTE *glyph_data;
UINT      row;
UINT      pixel_per_row;
UINT      pixel_in_first_byte;
UINT      pixel_in_last_byte = 0;
USHORT    text_color;
UINT      y_height;
GX_UBYTE  alpha;
UINT      glyph_width;
USHORT   *put;
UINT      num_bytes;
UINT      num_bits;
USHORT   *line_start;
GX_UBYTE  mask, init_mask;
UINT      i;
GX_VALUE  rotated_map_offset_x;
GX_VALUE  rotated_map_offset_y;
GX_VALUE  rotated_draw_left;
GX_VALUE  rotated_draw_top;

#if defined(GX_BRUSH_ALPHA_SUPPORT)
GX_UBYTE brush_alpha;
INT      xval, yval;
VOID     (*blend_func)(GX_DRAW_CONTEXT *, INT, INT, GX_COLOR, GX_UBYTE);

    brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;

    if (brush_alpha == 0)
    {
        return;
    }

    blend_func = _gx_display_driver_565rgb_pixel_blend;
#endif
    text_color = (USHORT)context -> gx_draw_context_brush.gx_brush_line_color;
    pixel_per_row = (UINT)(draw_area -> gx_rectangle_bottom - draw_area -> gx_rectangle_top + 1);
    y_height = (UINT)(draw_area -> gx_rectangle_right - draw_area -> gx_rectangle_left + 1);

    /* Find the width of the glyph, in terms of bytes */
    glyph_width = glyph -> gx_glyph_height;

    /* Make it byte-aligned. */
    glyph_width = (glyph_width + 7) >> 3;

    if (context -> gx_draw_context_display -> gx_display_rotation_angle == GX_SCREEN_ROTATION_CW)
    {
        rotated_draw_left = draw_area -> gx_rectangle_top;
        rotated_draw_top = (GX_VALUE)(context -> gx_draw_context_canvas -> gx_canvas_x_resolution - draw_area -> gx_rectangle_right - 1);

        rotated_map_offset_x = map_offset -> gx_point_y;
        rotated_map_offset_y = (GX_VALUE)(glyph -> gx_glyph_width - map_offset -> gx_point_x - (GX_VALUE)y_height);
    }
    else
    {
        rotated_draw_left = (GX_VALUE)(context -> gx_draw_context_canvas -> gx_canvas_display_offset_y - draw_area -> gx_rectangle_bottom - 1);
        rotated_draw_top = draw_area -> gx_rectangle_left;

        rotated_map_offset_x = (GX_VALUE)(glyph -> gx_glyph_height - map_offset -> gx_point_y - (GX_VALUE)pixel_per_row);
        rotated_map_offset_y = map_offset -> gx_point_x;
    }

    /* Compute the number of useful bytes from the glyph this routine is going to use.
       Because of map_offset, the first byte may contain pixel bits we don't need to draw;
       And the width of the draw_area may produce part of the last byte in the row to be ignored. */
    num_bytes = (UINT)(((INT)rotated_map_offset_x + (INT)pixel_per_row + 7) >> 3);

    /* Take into account if map_offset specifies the number of bytes to ignore from the beginning of the row. */
    num_bytes -= ((UINT)(rotated_map_offset_x)) >> 3;

    /* Compute the number of pixels to draw from the first byte of the glyph data. */
    pixel_in_first_byte = (UINT)(8 - ((rotated_map_offset_x) & 0x7));
    init_mask = (GX_UBYTE)(1 << (pixel_in_first_byte - 1));

    /* Compute the number of pixels to draw from the last byte, if there are more than one byte in a row. */
    if (num_bytes != 1)
    {
        pixel_in_last_byte = ((UINT)rotated_map_offset_x + pixel_per_row) & 0x7;
        if (pixel_in_last_byte == 0)
        {
            pixel_in_last_byte = 8;
        }
    }
    else
    {
        pixel_in_first_byte = pixel_per_row;
    }


    glyph_row = (GX_UBYTE *)glyph -> gx_glyph_map;

    if (rotated_map_offset_y)
    {
        glyph_row = (GX_UBYTE *)(glyph_row + ((INT)glyph_width * (INT)(rotated_map_offset_y)));
    }

    glyph_row += (rotated_map_offset_x >> 3);

    line_start = (USHORT *)context -> gx_draw_context_memory;
    line_start += context -> gx_draw_context_pitch * (rotated_draw_top);
    line_start += rotated_draw_left;

#if defined(GX_BRUSH_ALPHA_SUPPORT)
    if (brush_alpha != 0xff)
    {
        yval = rotated_draw_top;
        for (row = 0; row < y_height; row++)
        {
            xval = rotated_draw_left;
            glyph_data = glyph_row;
            alpha = *(glyph_data);
            mask = init_mask;
            num_bits = pixel_in_first_byte;
            for (i = 0; i < num_bytes; i++)
            {
                if ((i == (num_bytes - 1)) && (num_bytes > 1))
                {
                    num_bits = pixel_in_last_byte;
                }
                switch (num_bits)
                {
                case 8:
                    BLEND_PIXEL;
                /* fallthrough */
                case 7:
                    BLEND_PIXEL;
                /* fallthrough */
                case 6:
                    BLEND_PIXEL;
                /* fallthrough */
                case 5:
                    BLEND_PIXEL;
                /* fallthrough */
                case 4:
                    BLEND_PIXEL;
                /* fallthrough */
                case 3:
                    BLEND_PIXEL;
                /* fallthrough */
                case 2:
                    BLEND_PIXEL;
                /* fallthrough */
                default:
                    if (alpha & mask)
                    {
                        blend_func(context, xval, yval, text_color, brush_alpha);
                    }
                    xval++;
                    break;
                }
                glyph_data++;
                alpha = *(glyph_data);
                num_bits = 8;
                mask = 0x80;
            }

            glyph_row += glyph_width;
            yval++;
        }
    }
    else
    {
#endif
        for (row = 0; row < y_height; row++)
        {
            glyph_data = glyph_row;
            alpha = *(glyph_data);
            mask = init_mask;
            num_bits = pixel_in_first_byte;
            put = line_start;
            for (i = 0; i < num_bytes; i++)
            {
                if ((i == (num_bytes - 1)) && (num_bytes > 1))
                {
                    num_bits = pixel_in_last_byte;
                }
                switch (num_bits)
                {
                case 8:
                    DRAW_PIXEL;
                /* fallthrough */
                case 7:
                    DRAW_PIXEL;
                /* fallthrough */
                case 6:
                    DRAW_PIXEL;
                /* fallthrough */
                case 5:
                    DRAW_PIXEL;
                /* fallthrough */
                case 4:
                    DRAW_PIXEL;
                /* fallthrough */
                case 3:
                    DRAW_PIXEL;
                /* fallthrough */
                case 2:
                    DRAW_PIXEL;
                /* fallthrough */
                default:
                    if (alpha & mask)
                    {
                        *put = text_color;
                    }
                    put++;
                    break;
                }
                glyph_data++;
                alpha = *(glyph_data);
                num_bits = 8;
                mask = 0x80;
            }

            glyph_row += glyph_width;
            line_start += context -> gx_draw_context_pitch;
        }
#if defined(GX_BRUSH_ALPHA_SUPPORT)
    }
#endif
    return;
}



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			#define DRAW_PIXEL if (alpha & mask) \
33			{ \
34			*put = text_color; \
35			} \
36			put++; \
37			mask = mask >> 1;
38
39			#if defined(GX_BRUSH_ALPHA_SUPPORT)
40			#define BLEND_PIXEL if (alpha & mask) \
41			{ \
42			blend_func(context, xval, yval, text_color, brush_alpha); \
43			} \
44			xval++; \
45			mask = mask >> 1;
46			#endif
47
48			/**************************************************************************/
49			/* */
50			/* FUNCTION RELEASE */
51			/* */
52			/* _gx_display_driver_565rgb_rotated_glyph_1bit_draw PORTABLE C */
53			/* 6.1.3 */
54			/* AUTHOR */
55			/* */
56			/* Kenneth Maxwell, Microsoft Corporation */
57			/* */
58			/* DESCRIPTION */
59			/* */
60			/* This functions draw monochrome font on 16bpp canvas, clipped to */
61			/* one viewport. */
62			/* */
63			/* INPUT */
64			/* */
65			/* context Draw context */
66			/* draw_area The region bound by the */
67			/* rectangle where the glyph */
68			/* is drawn */
69			/* map_offset X,Y offset into the glyph map */
70			/* glyph Pointer to the glyph */
71			/* */
72			/* OUTPUT */
73			/* */
74			/* None */
75			/* */
76			/* CALLS */
77			/* */
78			/* [gx_display_driver_pixel_blend] Basic display driver pixel */
79			/* blend function */
80			/* */
81			/* CALLED BY */
82			/* */
83			/* GUIX internal code */
84			/* */
85			/**************************************************************************/
86		2178	VOID _gx_display_driver_565rgb_rotated_glyph_1bit_draw(GX_DRAW_CONTEXT context, GX_RECTANGLE draw_area, GX_POINT map_offset, GX_CONST GX_GLYPH glyph)
87			{
88			/* GX_DISPLAY display;/
89			GX_UBYTE *glyph_row;
90			GX_UBYTE *glyph_data;
91			UINT row;
92			UINT pixel_per_row;
93			UINT pixel_in_first_byte;
94		2178	UINT pixel_in_last_byte = 0;
95			USHORT text_color;
96			UINT y_height;
97			GX_UBYTE alpha;
98			UINT glyph_width;
99			USHORT *put;
100			UINT num_bytes;
101			UINT num_bits;
102			USHORT *line_start;
103			GX_UBYTE mask, init_mask;
104			UINT i;
105			GX_VALUE rotated_map_offset_x;
106			GX_VALUE rotated_map_offset_y;
107			GX_VALUE rotated_draw_left;
108			GX_VALUE rotated_draw_top;
109
110			#if defined(GX_BRUSH_ALPHA_SUPPORT)
111			GX_UBYTE brush_alpha;
112			INT xval, yval;
113			VOID (blend_func)(GX_DRAW_CONTEXT , INT, INT, GX_COLOR, GX_UBYTE);
114
115		2178	brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;
116
117	✓✓	2178	if (brush_alpha == 0)
118			{
119		97	return;
120			}
121
122		2081	blend_func = _gx_display_driver_565rgb_pixel_blend;
123			#endif
124		2081	text_color = (USHORT)context -> gx_draw_context_brush.gx_brush_line_color;
125		2081	pixel_per_row = (UINT)(draw_area -> gx_rectangle_bottom - draw_area -> gx_rectangle_top + 1);
126		2081	y_height = (UINT)(draw_area -> gx_rectangle_right - draw_area -> gx_rectangle_left + 1);
127
128			/* Find the width of the glyph, in terms of bytes */
129		2081	glyph_width = glyph -> gx_glyph_height;
130
131			/* Make it byte-aligned. */
132		2081	glyph_width = (glyph_width + 7) >> 3;
133
134	✓✓	2081	if (context -> gx_draw_context_display -> gx_display_rotation_angle == GX_SCREEN_ROTATION_CW)
135			{
136		1579	rotated_draw_left = draw_area -> gx_rectangle_top;
137		1579	rotated_draw_top = (GX_VALUE)(context -> gx_draw_context_canvas -> gx_canvas_x_resolution - draw_area -> gx_rectangle_right - 1);
138
139		1579	rotated_map_offset_x = map_offset -> gx_point_y;
140		1579	rotated_map_offset_y = (GX_VALUE)(glyph -> gx_glyph_width - map_offset -> gx_point_x - (GX_VALUE)y_height);
141			}
142			else
143			{
144		502	rotated_draw_left = (GX_VALUE)(context -> gx_draw_context_canvas -> gx_canvas_display_offset_y - draw_area -> gx_rectangle_bottom - 1);
145		502	rotated_draw_top = draw_area -> gx_rectangle_left;
146
147		502	rotated_map_offset_x = (GX_VALUE)(glyph -> gx_glyph_height - map_offset -> gx_point_y - (GX_VALUE)pixel_per_row);
148		502	rotated_map_offset_y = map_offset -> gx_point_x;
149			}
150
151			/* Compute the number of useful bytes from the glyph this routine is going to use.
152			Because of map_offset, the first byte may contain pixel bits we don't need to draw;
153			And the width of the draw_area may produce part of the last byte in the row to be ignored. */
154		2081	num_bytes = (UINT)(((INT)rotated_map_offset_x + (INT)pixel_per_row + 7) >> 3);
155
156			/* Take into account if map_offset specifies the number of bytes to ignore from the beginning of the row. */
157		2081	num_bytes -= ((UINT)(rotated_map_offset_x)) >> 3;
158
159			/* Compute the number of pixels to draw from the first byte of the glyph data. */
160		2081	pixel_in_first_byte = (UINT)(8 - ((rotated_map_offset_x) & 0x7));
161		2081	init_mask = (GX_UBYTE)(1 << (pixel_in_first_byte - 1));
162
163			/* Compute the number of pixels to draw from the last byte, if there are more than one byte in a row. */
164	✓✓	2081	if (num_bytes != 1)
165			{
166		1624	pixel_in_last_byte = ((UINT)rotated_map_offset_x + pixel_per_row) & 0x7;
167	✓✓	1624	if (pixel_in_last_byte == 0)
168			{
169		3	pixel_in_last_byte = 8;
170			}
171			}
172			else
173			{
174		457	pixel_in_first_byte = pixel_per_row;
175			}
176
177
178		2081	glyph_row = (GX_UBYTE *)glyph -> gx_glyph_map;
179
180	✓✓	2081	if (rotated_map_offset_y)
181			{
182		146	glyph_row = (GX_UBYTE )(glyph_row + ((INT)glyph_width (INT)(rotated_map_offset_y)));
183			}
184
185		2081	glyph_row += (rotated_map_offset_x >> 3);
186
187		2081	line_start = (USHORT *)context -> gx_draw_context_memory;
188		2081	line_start += context -> gx_draw_context_pitch * (rotated_draw_top);
189		2081	line_start += rotated_draw_left;
190
191			#if defined(GX_BRUSH_ALPHA_SUPPORT)
192	✓✓	2081	if (brush_alpha != 0xff)
193			{
194		97	yval = rotated_draw_top;
195	✓✓	1451	for (row = 0; row < y_height; row++)
196			{
197		1354	xval = rotated_draw_left;
198		1354	glyph_data = glyph_row;
199		1354	alpha = *(glyph_data);
200		1354	mask = init_mask;
201		1354	num_bits = pixel_in_first_byte;
202	✓✓	4467	for (i = 0; i < num_bytes; i++)
203			{
204	✓✓✓✓	3113	if ((i == (num_bytes - 1)) && (num_bytes > 1))
205			{
206		1162	num_bits = pixel_in_last_byte;
207			}
208	✓✓✓✓ ✓✓✓✓	3113	switch (num_bits)
209			{
210		1679	case 8:
211	✓✓	1679	BLEND_PIXEL;
212			/* fallthrough */
213		2136	case 7:
214	✓✓	2136	BLEND_PIXEL;
215			/* fallthrough */
216		2198	case 6:
217	✓✓	2198	BLEND_PIXEL;
218			/* fallthrough */
219		2282	case 5:
220	✓✓	2282	BLEND_PIXEL;
221			/* fallthrough */
222		2933	case 4:
223	✓✓	2933	BLEND_PIXEL;
224			/* fallthrough */
225		2993	case 3:
226	✓✓	2993	BLEND_PIXEL;
227			/* fallthrough */
228		3053	case 2:
229	✓✓	3053	BLEND_PIXEL;
230			/* fallthrough */
231		3113	default:
232	✓✓	3113	if (alpha & mask)
233			{
234		1161	blend_func(context, xval, yval, text_color, brush_alpha);
235			}
236		3113	xval++;
237		3113	break;
238			}
239		3113	glyph_data++;
240		3113	alpha = *(glyph_data);
241		3113	num_bits = 8;
242		3113	mask = 0x80;
243			}
244
245		1354	glyph_row += glyph_width;
246		1354	yval++;
247			}
248			}
249			else
250			{
251			#endif
252	✓✓	22650	for (row = 0; row < y_height; row++)
253			{
254		20666	glyph_data = glyph_row;
255		20666	alpha = *(glyph_data);
256		20666	mask = init_mask;
257		20666	num_bits = pixel_in_first_byte;
258		20666	put = line_start;
259	✓✓	59018	for (i = 0; i < num_bytes; i++)
260			{
261	✓✓✓✓	38352	if ((i == (num_bytes - 1)) && (num_bytes > 1))
262			{
263		16034	num_bits = pixel_in_last_byte;
264			}
265	✓✓✓✓ ✓✓✓✓	38352	switch (num_bits)
266			{
267		17410	case 8:
268	✓✓	17410	DRAW_PIXEL;
269			/* fallthrough */
270		18484	case 7:
271	✓✓	18484	DRAW_PIXEL;
272			/* fallthrough */
273		18623	case 6:
274	✓✓	18623	DRAW_PIXEL;
275			/* fallthrough */
276		32000	case 5:
277	✓✓	32000	DRAW_PIXEL;
278			/* fallthrough */
279		33549	case 4:
280	✓✓	33549	DRAW_PIXEL;
281			/* fallthrough */
282		33935	case 3:
283	✓✓	33935	DRAW_PIXEL;
284			/* fallthrough */
285		36459	case 2:
286	✓✓	36459	DRAW_PIXEL;
287			/* fallthrough */
288		38352	default:
289	✓✓	38352	if (alpha & mask)
290			{
291		15653	*put = text_color;
292			}
293		38352	put++;
294		38352	break;
295			}
296		38352	glyph_data++;
297		38352	alpha = *(glyph_data);
298		38352	num_bits = 8;
299		38352	mask = 0x80;
300			}
301
302		20666	glyph_row += glyph_width;
303		20666	line_start += context -> gx_draw_context_pitch;
304			}
305			#if defined(GX_BRUSH_ALPHA_SUPPORT)
306			}
307			#endif
308		2081	return;
309			}
310