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comparison: components/u8g2/csrc/u8g2_bitmap.c

components/u8g2/csrc/u8g2_bitmap.c

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1 /*
2
3 u8g2_bitmap.c
4
5 Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
6
7 Copyright (c) 2016, olikraus@gmail.com
8 All rights reserved.
9
10 Redistribution and use in source and binary forms, with or without modification,
11 are permitted provided that the following conditions are met:
12
13 * Redistributions of source code must retain the above copyright notice, this list
14 of conditions and the following disclaimer.
15
16 * Redistributions in binary form must reproduce the above copyright notice, this
17 list of conditions and the following disclaimer in the documentation and/or other
18 materials provided with the distribution.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
21 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
22 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
25 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
30 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33
34 */
35
36 #include "u8g2.h"
37
38
39 void u8g2_SetBitmapMode(u8g2_t *u8g2, uint8_t is_transparent) {
40 u8g2->bitmap_transparency = is_transparent;
41 }
42
43 /*
44 x,y Position on the display
45 len Length of bitmap line in pixel. Note: This differs from u8glib which had a bytecount here.
46 b Pointer to the bitmap line.
47 Only draw pixels which are set.
48 */
49
50 void u8g2_DrawHorizontalBitmap(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
51 {
52 uint8_t mask;
53 uint8_t color = u8g2->draw_color;
54 uint8_t ncolor = (color == 0 ? 1 : 0);
55
56 #ifdef U8G2_WITH_INTERSECTION
57 if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 )
58 return;
59 #endif /* U8G2_WITH_INTERSECTION */
60
61 mask = 128;
62 while(len > 0)
63 {
64 if ( *b & mask ) {
65 u8g2->draw_color = color;
66 u8g2_DrawHVLine(u8g2, x, y, 1, 0);
67 } else if ( u8g2->bitmap_transparency == 0 ) {
68 u8g2->draw_color = ncolor;
69 u8g2_DrawHVLine(u8g2, x, y, 1, 0);
70 }
71
72 x++;
73 mask >>= 1;
74 if ( mask == 0 )
75 {
76 mask = 128;
77 b++;
78 }
79 len--;
80 }
81 u8g2->draw_color = color;
82 }
83
84
85 /* u8glib compatible bitmap draw function */
86 void u8g2_DrawBitmap(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t cnt, u8g2_uint_t h, const uint8_t *bitmap)
87 {
88 u8g2_uint_t w;
89 w = cnt;
90 w *= 8;
91 #ifdef U8G2_WITH_INTERSECTION
92 if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
93 return;
94 #endif /* U8G2_WITH_INTERSECTION */
95
96 while( h > 0 )
97 {
98 u8g2_DrawHorizontalBitmap(u8g2, x, y, w, bitmap);
99 bitmap += cnt;
100 y++;
101 h--;
102 }
103 }
104
105
106
107 void u8g2_DrawHXBM(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
108 {
109 uint8_t mask;
110 uint8_t color = u8g2->draw_color;
111 uint8_t ncolor = (color == 0 ? 1 : 0);
112 #ifdef U8G2_WITH_INTERSECTION
113 if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 )
114 return;
115 #endif /* U8G2_WITH_INTERSECTION */
116
117 mask = 1;
118 while(len > 0) {
119 if ( *b & mask ) {
120 u8g2->draw_color = color;
121 u8g2_DrawHVLine(u8g2, x, y, 1, 0);
122 } else if ( u8g2->bitmap_transparency == 0 ) {
123 u8g2->draw_color = ncolor;
124 u8g2_DrawHVLine(u8g2, x, y, 1, 0);
125 }
126 x++;
127 mask <<= 1;
128 if ( mask == 0 )
129 {
130 mask = 1;
131 b++;
132 }
133 len--;
134 }
135 u8g2->draw_color = color;
136 }
137
138
139 void u8g2_DrawXBM(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, const uint8_t *bitmap)
140 {
141 u8g2_uint_t blen;
142 blen = w;
143 blen += 7;
144 blen >>= 3;
145 #ifdef U8G2_WITH_INTERSECTION
146 if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
147 return;
148 #endif /* U8G2_WITH_INTERSECTION */
149
150 while( h > 0 )
151 {
152 u8g2_DrawHXBM(u8g2, x, y, w, bitmap);
153 bitmap += blen;
154 y++;
155 h--;
156 }
157 }
158
159
160
161
162
163
164 void u8g2_DrawHXBMP(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
165 {
166 uint8_t mask;
167 uint8_t color = u8g2->draw_color;
168 uint8_t ncolor = (color == 0 ? 1 : 0);
169 #ifdef U8G2_WITH_INTERSECTION
170 if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 )
171 return;
172 #endif /* U8G2_WITH_INTERSECTION */
173
174 mask = 1;
175 while(len > 0)
176 {
177 if( u8x8_pgm_read(b) & mask ) {
178 u8g2->draw_color = color;
179 u8g2_DrawHVLine(u8g2, x, y, 1, 0);
180 } else if( u8g2->bitmap_transparency == 0 ) {
181 u8g2->draw_color = ncolor;
182 u8g2_DrawHVLine(u8g2, x, y, 1, 0);
183 }
184
185 x++;
186 mask <<= 1;
187 if ( mask == 0 )
188 {
189 mask = 1;
190 b++;
191 }
192 len--;
193 }
194 u8g2->draw_color = color;
195 }
196
197
198 void u8g2_DrawXBMP(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, const uint8_t *bitmap)
199 {
200 u8g2_uint_t blen;
201 blen = w;
202 blen += 7;
203 blen >>= 3;
204 #ifdef U8G2_WITH_INTERSECTION
205 if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
206 return;
207 #endif /* U8G2_WITH_INTERSECTION */
208
209 while( h > 0 )
210 {
211 u8g2_DrawHXBMP(u8g2, x, y, w, bitmap);
212 bitmap += blen;
213 y++;
214 h--;
215 }
216 }
217
218

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