Xyris  0.5
font.cpp
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1 /**
2  * @file font.cpp
3  * @author Keeton Feavel ([email protected])
4  * @brief
5  * @version 0.1
6  * @date 2021-07-25
7  *
8  * @copyright Copyright the Panix Contributors (c) 2021
9  *
10  * References:
11  * https://github.com/skiftOS/skift/blob/main/kernel/system/Graphics/Font.cpp
12  */
13 #include <Devices/Graphics/font.hpp>
14 #include <Devices/Graphics/graphics.hpp>
15 #include <stdint.h>
16 
17 namespace Graphics {
18 namespace Font {
19 
20 #define FONT_COUNT 128
21 
22 // *Huge* shout out to SkiftOS for providing this font. We tried to
23 // use bdf2c to get a custom font, but because of licensing issues we
24 // had to unfortunately abandon the idea. Fonts are a pain, so go check
25 // out the work that SkiftOS has done. They deserve it.
26 static uint8_t fontData[FONT_COUNT][FONT_WIDTH] = {
27  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0000 (null)
28  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0001
29  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0002
30  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0003
31  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0004
32  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0005
33  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0006
34  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0007
35  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0008
36  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0009
37  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+000A
38  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+000B
39  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+000C
40  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+000D
41  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+000E
42  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+000F
43  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0010
44  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0011
45  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0012
46  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0013
47  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0014
48  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0015
49  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0016
50  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0017
51  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0018
52  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0019
53  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+001A
54  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+001B
55  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+001C
56  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+001D
57  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+001E
58  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+001F
59  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0020 (space)
60  { 0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00 }, // U+0021 (!)
61  { 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0022 (")
62  { 0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00 }, // U+0023 (#)
63  { 0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00 }, // U+0024 ($)
64  { 0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00 }, // U+0025 (%)
65  { 0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00 }, // U+0026 (&)
66  { 0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0027 (')
67  { 0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00 }, // U+0028 (()
68  { 0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00 }, // U+0029 ())
69  { 0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00 }, // U+002A (*)
70  { 0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00 }, // U+002B (+)
71  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06 }, // U+002C (,)
72  { 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00 }, // U+002D (-)
73  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00 }, // U+002E (.)
74  { 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00 }, // U+002F (/)
75  { 0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00 }, // U+0030 (0)
76  { 0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00 }, // U+0031 (1)
77  { 0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00 }, // U+0032 (2)
78  { 0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00 }, // U+0033 (3)
79  { 0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00 }, // U+0034 (4)
80  { 0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00 }, // U+0035 (5)
81  { 0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00 }, // U+0036 (6)
82  { 0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00 }, // U+0037 (7)
83  { 0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00 }, // U+0038 (8)
84  { 0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00 }, // U+0039 (9)
85  { 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00 }, // U+003A (:)
86  { 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06 }, // U+003B (;)
87  { 0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00 }, // U+003C (<)
88  { 0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00 }, // U+003D (=)
89  { 0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00 }, // U+003E (>)
90  { 0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00 }, // U+003F (?)
91  { 0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00 }, // U+0040 (@)
92  { 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00 }, // U+0041 (A)
93  { 0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00 }, // U+0042 (B)
94  { 0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00 }, // U+0043 (C)
95  { 0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00 }, // U+0044 (D)
96  { 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00 }, // U+0045 (E)
97  { 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00 }, // U+0046 (F)
98  { 0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00 }, // U+0047 (G)
99  { 0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00 }, // U+0048 (H)
100  { 0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00 }, // U+0049 (I)
101  { 0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00 }, // U+004A (J)
102  { 0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00 }, // U+004B (K)
103  { 0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00 }, // U+004C (L)
104  { 0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00 }, // U+004D (M)
105  { 0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00 }, // U+004E (N)
106  { 0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00 }, // U+004F (O)
107  { 0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00 }, // U+0050 (P)
108  { 0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00 }, // U+0051 (Q)
109  { 0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00 }, // U+0052 (R)
110  { 0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00 }, // U+0053 (S)
111  { 0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00 }, // U+0054 (T)
112  { 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00 }, // U+0055 (U)
113  { 0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00 }, // U+0056 (V)
114  { 0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00 }, // U+0057 (W)
115  { 0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00 }, // U+0058 (X)
116  { 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00 }, // U+0059 (Y)
117  { 0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00 }, // U+005A (Z)
118  { 0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00 }, // U+005B ([)
119  { 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00 }, // U+005C (\)
120  { 0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00 }, // U+005D (])
121  { 0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00 }, // U+005E (^)
122  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF }, // U+005F (_)
123  { 0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+0060 (`)
124  { 0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00 }, // U+0061 (a)
125  { 0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00 }, // U+0062 (b)
126  { 0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00 }, // U+0063 (c)
127  { 0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00 }, // U+0064 (d)
128  { 0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00 }, // U+0065 (e)
129  { 0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00 }, // U+0066 (f)
130  { 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F }, // U+0067 (g)
131  { 0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00 }, // U+0068 (h)
132  { 0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00 }, // U+0069 (i)
133  { 0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E }, // U+006A (j)
134  { 0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00 }, // U+006B (k)
135  { 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00 }, // U+006C (l)
136  { 0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00 }, // U+006D (m)
137  { 0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00 }, // U+006E (n)
138  { 0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00 }, // U+006F (o)
139  { 0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F }, // U+0070 (p)
140  { 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78 }, // U+0071 (q)
141  { 0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00 }, // U+0072 (r)
142  { 0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00 }, // U+0073 (s)
143  { 0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00 }, // U+0074 (t)
144  { 0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00 }, // U+0075 (u)
145  { 0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00 }, // U+0076 (v)
146  { 0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00 }, // U+0077 (w)
147  { 0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00 }, // U+0078 (x)
148  { 0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F }, // U+0079 (y)
149  { 0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00 }, // U+007A (z)
150  { 0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00 }, // U+007B ({)
151  { 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00 }, // U+007C (|)
152  { 0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00 }, // U+007D (})
153  { 0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // U+007E (~)
154  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } // U+007F
155 };
156 
157 void Draw(char c, uint32_t x, uint32_t y, uint32_t fore)
158 {
159  // Convert screen coordinates to pixel coordinates
160  x *= FONT_WIDTH;
161  y *= FONT_HEIGHT;
162  // Draw the font glyph
163  uint8_t fp = (uint8_t)c;
164  for (int fy = 0; fy <= FONT_HEIGHT; fy++) {
165  for (int fx = 0; fx <= FONT_WIDTH; fx++) {
166  if (fx != FONT_WIDTH && fy != FONT_HEIGHT && (fontData[fp][fy] & (1 << fx))) {
167  // Current position is part of the font glyph.
168  pixel(x + fx, y + fy, fore);
169  }
170  }
171  }
172 }
173 
174 void Draw(char c, uint32_t x, uint32_t y, uint32_t fore, uint32_t back)
175 {
176  // Convert screen coordinates to pixel coordinates
177  x *= FONT_WIDTH;
178  y *= FONT_HEIGHT;
179  // Draw the font glyph
180  uint8_t fp = (uint8_t)c;
181  for (int fy = 0; fy < 9; fy++) {
182  for (int fx = 0; fx < 9; fx++) {
183  if (fx != FONT_WIDTH && fy != FONT_HEIGHT && (fontData[fp][fy] & (1 << fx))) {
184  // Current position is part of the font glyph.
185  pixel(x + fx, y + fy, fore);
186  } else {
187  // Not part of the glyph. Draw background color.
188  pixel(x + fx, y + fy, back);
189  }
190  }
191  }
192 }
193 
194 } // !font
195 } // !fb
FONT_COUNT
#define FONT_COUNT
Definition: font.cpp:20
FONT_HEIGHT
#define FONT_HEIGHT
Definition: font.hpp:15
graphics.hpp
font.hpp
Graphics::pixel
void pixel(uint32_t x, uint32_t y, uint32_t color)
Draws a pixel at a given coordinate.
Definition: graphics.cpp:53
Graphics
Definition: font.cpp:17
Graphics::Font::Draw
void Draw(char c, uint32_t x, uint32_t y, uint32_t fore)
Draw the character at the given coordinates in the given color.
Definition: font.cpp:157
FONT_WIDTH
#define FONT_WIDTH
Definition: font.hpp:14