Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_display_driver_generic_rotated_glyph_4bit_draw.c	Lines:	110	110	100.0 %
Date:	2024-12-05 08:52:37	Branches:	44	44	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"

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_display_driver_generic_rotated_glyph_4bit_draw  PORTABLE C      */
/*                                                           6.1.3        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function draws the specified text using the current context,   */
/*    clipped to one viewport                                             */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    context                               Draw context                  */
/*    draw_area                             The rectangle where the glyph */
/*                                            is drawn to                 */
/*    map_offset                            Offset from the glyph map     */
/*    glyph                                 The glyph structure           */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    [gx_display_driver_pixel_blend]       Call display driver pixel     */
/*                                            blend function              */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    GUIX internal code                                                  */
/*                                                                        */
/*  RELEASE HISTORY                                                       */
/*                                                                        */
/*    DATE              NAME                      DESCRIPTION             */
/*                                                                        */
/*  12-31-2020     Kenneth Maxwell          Initial Version 6.1.3         */
/*                                                                        */
/**************************************************************************/
VOID _gx_display_driver_generic_rotated_glyph_4bit_draw(GX_DRAW_CONTEXT *context, GX_RECTANGLE *draw_area, GX_POINT *map_offset, GX_CONST GX_GLYPH *glyph)
{
GX_UBYTE *glyph_row;
GX_UBYTE *glyph_data;
UINT      row;
UINT      col;
UINT      pixel_width = 0;
UINT      leading_pixel;
UINT      trailing_pixel;
GX_COLOR  text_color;
UINT      y_height;
GX_UBYTE  alpha;
UINT      pitch;
UINT      index;
VOID      (*blend_func)(GX_DRAW_CONTEXT *context, INT x, INT y, GX_COLOR color, GX_UBYTE alpha);
GX_UBYTE  brush_alpha = 0xff;
GX_VALUE  rotated_map_offset_x;
GX_VALUE  rotated_map_offset_y;
GX_VALUE  rotated_left;
GX_VALUE  rotated_top;

#if defined(GX_BRUSH_ALPHA_SUPPORT)
INT alpha_sum;
    brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;
    if (brush_alpha == 0)
    {
        return;
    }
#endif

    text_color = context -> gx_draw_context_brush.gx_brush_line_color;

    y_height = (UINT)(draw_area -> gx_rectangle_right - draw_area -> gx_rectangle_left + 1);

    /* Find the width of the glyph */
    pitch = glyph -> gx_glyph_height;
    /* Make it byte-aligned. */
    pitch = (pitch + 1) >> 1;

    pixel_width = (UINT)(draw_area -> gx_rectangle_bottom - draw_area -> gx_rectangle_top + 1);

    if (context -> gx_draw_context_display -> gx_display_rotation_angle == GX_SCREEN_ROTATION_CW)
    {
        rotated_left = draw_area -> gx_rectangle_top;
        rotated_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_left = (GX_VALUE)(context -> gx_draw_context_canvas -> gx_canvas_display_offset_y - draw_area -> gx_rectangle_bottom - 1);
        rotated_top = draw_area -> gx_rectangle_left;

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

    glyph_row = (GX_UBYTE *)glyph -> gx_glyph_map;

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

    glyph_row += (rotated_map_offset_x >> 1);

    GX_SET_BLEND_FUNCTION(blend_func, context -> gx_draw_context_display -> gx_display_color_format)

    leading_pixel = (rotated_map_offset_x & 1);

    pixel_width -= leading_pixel;

    trailing_pixel = pixel_width & 1;

    pixel_width = pixel_width >> 1;

    if (brush_alpha == 0xff)
    {
        for (row = 0; row < y_height; row++)
        {
            col = 0;
            glyph_data = glyph_row;

            if (leading_pixel)
            {
                alpha = (*glyph_data) & 0x0f;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha << 4));

                if (alpha > 0)
                {
                    blend_func(context,
                               rotated_left + (GX_VALUE)col,
                               rotated_top + (GX_VALUE)row,
                               text_color, (GX_UBYTE)alpha);
                }
                col++;
                glyph_data++;
            }

            for (index = 0; index < pixel_width; index++)
            {
                alpha = (*glyph_data) & 0xf0;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha >> 4));

                if (alpha > 0)
                {
                    blend_func(context,
                               rotated_left + (GX_VALUE)col,
                               rotated_top + (GX_VALUE)row,
                               text_color, (GX_UBYTE)alpha);
                }
                col++;

                alpha = (*glyph_data) & 0x0f;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha << 4));

                if (alpha > 0)
                {
                    blend_func(context,
                               rotated_left + (GX_VALUE)col,
                               rotated_top + (GX_VALUE)row,
                               text_color, (GX_UBYTE)alpha);
                }
                col++;
                glyph_data++;
            }

            if (trailing_pixel)
            {
                alpha = (*glyph_data) & 0xf0;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha >> 4));

                if (alpha > 0)
                {
                    blend_func(context,
                               rotated_left + (GX_VALUE)col,
                               rotated_top + (GX_VALUE)row,
                               text_color, (GX_UBYTE)alpha);
                }
            }
            glyph_row += pitch;
        }
    }
#if defined(GX_BRUSH_ALPHA_SUPPORT)
    else
    {
        for (row = 0; row < y_height; row++)
        {
            col = 0;
            glyph_data = glyph_row;

            if (leading_pixel)
            {
                alpha = (*glyph_data) & 0x0f;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha << 4));

                alpha_sum = alpha * brush_alpha / 255;

                if (alpha_sum > 0)
                {
                    blend_func(context,
                               rotated_left + (GX_VALUE)col,
                               rotated_top + (GX_VALUE)row,
                               text_color, (GX_UBYTE)alpha_sum);
                }
                col++;
                glyph_data++;
            }

            for (index = 0; index < pixel_width; index++)
            {
                alpha = (*glyph_data) & 0xf0;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha >> 4));
                alpha_sum = alpha * brush_alpha / 255;

                if (alpha_sum > 0)
                {
                    blend_func(context,
                               rotated_left + (GX_VALUE)col,
                               rotated_top + (GX_VALUE)row,
                               text_color, (GX_UBYTE)alpha_sum);
                }
                col++;

                alpha = (*glyph_data) & 0x0f;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha << 4));
                alpha_sum = alpha * brush_alpha / 255;

                if (alpha_sum > 0)
                {
                    blend_func(context,
                               rotated_left + (GX_VALUE)col,
                               rotated_top + (GX_VALUE)row,
                               text_color, (GX_UBYTE)alpha_sum);
                }
                col++;
                glyph_data++;
            }

            if (trailing_pixel)
            {
                alpha = (*glyph_data) & 0xf0;
                alpha = (GX_UBYTE)(alpha | (GX_UBYTE)(alpha >> 4));
                alpha_sum = alpha * brush_alpha / 255;

                if (alpha_sum > 0)
                {
                    blend_func(context,
                               rotated_left + (GX_VALUE)col,
                               rotated_top + (GX_VALUE)row,
                               text_color, (GX_UBYTE)alpha_sum);
                }
            }
            glyph_row += pitch;
        }
    }
#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
31			/**************************************************************************/
32			/* */
33			/* FUNCTION RELEASE */
34			/* */
35			/* _gx_display_driver_generic_rotated_glyph_4bit_draw PORTABLE C */
36			/* 6.1.3 */
37			/* AUTHOR */
38			/* */
39			/* Kenneth Maxwell, Microsoft Corporation */
40			/* */
41			/* DESCRIPTION */
42			/* */
43			/* This function draws the specified text using the current context, */
44			/* clipped to one viewport */
45			/* */
46			/* INPUT */
47			/* */
48			/* context Draw context */
49			/* draw_area The rectangle where the glyph */
50			/* is drawn to */
51			/* map_offset Offset from the glyph map */
52			/* glyph The glyph structure */
53			/* */
54			/* OUTPUT */
55			/* */
56			/* None */
57			/* */
58			/* CALLS */
59			/* */
60			/* [gx_display_driver_pixel_blend] Call display driver pixel */
61			/* blend function */
62			/* */
63			/* CALLED BY */
64			/* */
65			/* GUIX internal code */
66			/* */
67			/* RELEASE HISTORY */
68			/* */
69			/* DATE NAME DESCRIPTION */
70			/* */
71			/* 12-31-2020 Kenneth Maxwell Initial Version 6.1.3 */
72			/* */
73			/**************************************************************************/
74		439742	VOID _gx_display_driver_generic_rotated_glyph_4bit_draw(GX_DRAW_CONTEXT context, GX_RECTANGLE draw_area, GX_POINT map_offset, GX_CONST GX_GLYPH glyph)
75			{
76			GX_UBYTE *glyph_row;
77			GX_UBYTE *glyph_data;
78			UINT row;
79			UINT col;
80		439742	UINT pixel_width = 0;
81			UINT leading_pixel;
82			UINT trailing_pixel;
83			GX_COLOR text_color;
84			UINT y_height;
85			GX_UBYTE alpha;
86			UINT pitch;
87			UINT index;
88			VOID (blend_func)(GX_DRAW_CONTEXT context, INT x, INT y, GX_COLOR color, GX_UBYTE alpha);
89		439742	GX_UBYTE brush_alpha = 0xff;
90			GX_VALUE rotated_map_offset_x;
91			GX_VALUE rotated_map_offset_y;
92			GX_VALUE rotated_left;
93			GX_VALUE rotated_top;
94
95			#if defined(GX_BRUSH_ALPHA_SUPPORT)
96			INT alpha_sum;
97		439742	brush_alpha = context -> gx_draw_context_brush.gx_brush_alpha;
98	✓✓	439742	if (brush_alpha == 0)
99			{
100		208	return;
101			}
102			#endif
103
104		439534	text_color = context -> gx_draw_context_brush.gx_brush_line_color;
105
106		439534	y_height = (UINT)(draw_area -> gx_rectangle_right - draw_area -> gx_rectangle_left + 1);
107
108			/* Find the width of the glyph */
109		439534	pitch = glyph -> gx_glyph_height;
110			/* Make it byte-aligned. */
111		439534	pitch = (pitch + 1) >> 1;
112
113		439534	pixel_width = (UINT)(draw_area -> gx_rectangle_bottom - draw_area -> gx_rectangle_top + 1);
114
115	✓✓	439534	if (context -> gx_draw_context_display -> gx_display_rotation_angle == GX_SCREEN_ROTATION_CW)
116			{
117		269594	rotated_left = draw_area -> gx_rectangle_top;
118		269594	rotated_top = (GX_VALUE)(context -> gx_draw_context_canvas -> gx_canvas_x_resolution - draw_area -> gx_rectangle_right - 1);
119
120		269594	rotated_map_offset_x = map_offset -> gx_point_y;
121		269594	rotated_map_offset_y = (GX_VALUE)(glyph -> gx_glyph_width - map_offset -> gx_point_x - (GX_VALUE)y_height);
122			}
123			else
124			{
125		169940	rotated_left = (GX_VALUE)(context -> gx_draw_context_canvas -> gx_canvas_display_offset_y - draw_area -> gx_rectangle_bottom - 1);
126		169940	rotated_top = draw_area -> gx_rectangle_left;
127
128		169940	rotated_map_offset_x = (GX_VALUE)(glyph -> gx_glyph_height - map_offset -> gx_point_y - (GX_VALUE)pixel_width);
129		169940	rotated_map_offset_y = map_offset -> gx_point_x;
130			}
131
132		439534	glyph_row = (GX_UBYTE *)glyph -> gx_glyph_map;
133
134	✓✓	439534	if (rotated_map_offset_y)
135			{
136		4469	glyph_row = glyph_row + ((INT)pitch * rotated_map_offset_y);
137			}
138
139		439534	glyph_row += (rotated_map_offset_x >> 1);
140
141	✓✓✓✓	439534	GX_SET_BLEND_FUNCTION(blend_func, context -> gx_draw_context_display -> gx_display_color_format)
142
143		435955	leading_pixel = (rotated_map_offset_x & 1);
144
145		435955	pixel_width -= leading_pixel;
146
147		435955	trailing_pixel = pixel_width & 1;
148
149		435955	pixel_width = pixel_width >> 1;
150
151	✓✓	435955	if (brush_alpha == 0xff)
152			{
153	✓✓	4000082	for (row = 0; row < y_height; row++)
154			{
155		3564457	col = 0;
156		3564457	glyph_data = glyph_row;
157
158	✓✓	3564457	if (leading_pixel)
159			{
160		264	alpha = (*glyph_data) & 0x0f;
161		264	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
162
163	✓✓	264	if (alpha > 0)
164			{
165		90	blend_func(context,
166		90	rotated_left + (GX_VALUE)col,
167		90	rotated_top + (GX_VALUE)row,
168			text_color, (GX_UBYTE)alpha);
169			}
170		264	col++;
171		264	glyph_data++;
172			}
173
174	✓✓	23758290	for (index = 0; index < pixel_width; index++)
175			{
176		20193833	alpha = (*glyph_data) & 0xf0;
177		20193833	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
178
179	✓✓	20193833	if (alpha > 0)
180			{
181		12944637	blend_func(context,
182		12944637	rotated_left + (GX_VALUE)col,
183		12944637	rotated_top + (GX_VALUE)row,
184			text_color, (GX_UBYTE)alpha);
185			}
186		20193833	col++;
187
188		20193833	alpha = (*glyph_data) & 0x0f;
189		20193833	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
190
191	✓✓	20193833	if (alpha > 0)
192			{
193		12974027	blend_func(context,
194		12974027	rotated_left + (GX_VALUE)col,
195		12974027	rotated_top + (GX_VALUE)row,
196			text_color, (GX_UBYTE)alpha);
197			}
198		20193833	col++;
199		20193833	glyph_data++;
200			}
201
202	✓✓	3564457	if (trailing_pixel)
203			{
204		724949	alpha = (*glyph_data) & 0xf0;
205		724949	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
206
207	✓✓	724949	if (alpha > 0)
208			{
209		407244	blend_func(context,
210		407244	rotated_left + (GX_VALUE)col,
211		407244	rotated_top + (GX_VALUE)row,
212			text_color, (GX_UBYTE)alpha);
213			}
214			}
215		3564457	glyph_row += pitch;
216			}
217			}
218			#if defined(GX_BRUSH_ALPHA_SUPPORT)
219			else
220			{
221	✓✓	4804	for (row = 0; row < y_height; row++)
222			{
223		4474	col = 0;
224		4474	glyph_data = glyph_row;
225
226	✓✓	4474	if (leading_pixel)
227			{
228		218	alpha = (*glyph_data) & 0x0f;
229		218	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
230
231		218	alpha_sum = alpha * brush_alpha / 255;
232
233	✓✓	218	if (alpha_sum > 0)
234			{
235		77	blend_func(context,
236		77	rotated_left + (GX_VALUE)col,
237		77	rotated_top + (GX_VALUE)row,
238		77	text_color, (GX_UBYTE)alpha_sum);
239			}
240		218	col++;
241		218	glyph_data++;
242			}
243
244	✓✓	35502	for (index = 0; index < pixel_width; index++)
245			{
246		31028	alpha = (*glyph_data) & 0xf0;
247		31028	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
248		31028	alpha_sum = alpha * brush_alpha / 255;
249
250	✓✓	31028	if (alpha_sum > 0)
251			{
252		13097	blend_func(context,
253		13097	rotated_left + (GX_VALUE)col,
254		13097	rotated_top + (GX_VALUE)row,
255		13097	text_color, (GX_UBYTE)alpha_sum);
256			}
257		31028	col++;
258
259		31028	alpha = (*glyph_data) & 0x0f;
260		31028	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha << 4));
261		31028	alpha_sum = alpha * brush_alpha / 255;
262
263	✓✓	31028	if (alpha_sum > 0)
264			{
265		12942	blend_func(context,
266		12942	rotated_left + (GX_VALUE)col,
267		12942	rotated_top + (GX_VALUE)row,
268		12942	text_color, (GX_UBYTE)alpha_sum);
269			}
270		31028	col++;
271		31028	glyph_data++;
272			}
273
274	✓✓	4474	if (trailing_pixel)
275			{
276		2098	alpha = (*glyph_data) & 0xf0;
277		2098	alpha = (GX_UBYTE)(alpha \| (GX_UBYTE)(alpha >> 4));
278		2098	alpha_sum = alpha * brush_alpha / 255;
279
280	✓✓	2098	if (alpha_sum > 0)
281			{
282		1144	blend_func(context,
283		1144	rotated_left + (GX_VALUE)col,
284		1144	rotated_top + (GX_VALUE)row,
285		1144	text_color, (GX_UBYTE)alpha_sum);
286			}
287			}
288		4474	glyph_row += pitch;
289			}
290			}
291			#endif
292			}
293