1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/****************************************************************************
* graphics/nxbe/nxbe_bitmap.c
*
* Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/nx/nxglib.h>
#include "nxbe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
struct nx_bitmap_s
{
struct nxbe_clipops_s cops;
FAR const void *src; /* The start of the source image. */
struct nxgl_point_s origin; /* Offset into the source image data */
unsigned int stride; /* The width of the full source image in pixels. */
};
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nxs_clipcopy
*
* Description:
* Called from nxbe_clipper() to performed the fill operation on visible portions
* of the rectangle.
*
****************************************************************************/
static void nxs_clipcopy(FAR struct nxbe_clipops_s *cops,
FAR struct nxbe_plane_s *plane,
FAR const struct nxgl_rect_s *rect)
{
struct nx_bitmap_s *bminfo = (struct nx_bitmap_s *)cops;
plane->copyrectangle(&plane->pinfo, rect, bminfo->src,
&bminfo->origin, bminfo->stride);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_bitmap
*
* Description:
* Copy a rectangular region of a larger image into the rectangle in the
* specified window.
*
* Input Parameters:
* wnd - The window that will receive the bitmap image
* dest - Describes the rectangular on the display that will receive the
* the bit map.
* src - The start of the source image.
* origin - The origin of the upper, left-most corner of the full bitmap.
* Both dest and origin are in window coordinates, however, origin
* may lie outside of the display.
* stride - The width of the full source image in pixels.
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
void nxbe_bitmap(FAR struct nxbe_window_s *wnd, FAR const struct nxgl_rect_s *dest,
FAR const void *src[CONFIG_NX_NPLANES],
FAR const struct nxgl_point_s *origin, unsigned int stride)
{
struct nx_bitmap_s info;
struct nxgl_rect_s bounds;
struct nxgl_point_s offset;
struct nxgl_rect_s remaining;
unsigned int deststride;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !dest || !src || !origin)
{
return;
}
#endif
/* Offset the rectangle and image origin by the window origin */
nxgl_rectoffset(&bounds, dest, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
nxgl_vectoradd(&offset, origin, &wnd->bounds.pt1);
/* Verify that the destination rectangle begins "below" and to the "right"
* of the origin
*/
if (bounds.pt1.x < origin->x || bounds.pt1.y < origin->y)
{
gdbg("Bad dest start position\n");
return;
}
/* Verify that the width of the destination rectangle does not exceed the
* width of the source bitmap data (taking into account the bitmap origin)
*/
deststride = (((bounds.pt2.x - origin->x + 1) * wnd->be->plane[0].pinfo.bpp + 7) >> 3);
if (deststride > stride)
{
gdbg("Bad dest width\n");
return;
}
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&remaining, &bounds, &wnd->bounds);
nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds);
if (nxgl_nullrect(&remaining))
{
return;
}
/* Then perform the clipped fill */
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
info.cops.visible = nxs_clipcopy;
info.cops.obscured = nxbe_clipnull;
info.src = src[i];
info.origin.x = offset.x;
info.origin.y = offset.y;
info.stride = stride;
nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
&info.cops, &wnd->be->plane[i]);
}
}
|