-
Notifications
You must be signed in to change notification settings - Fork 0
/
Pixels.h
762 lines (683 loc) · 28.1 KB
/
Pixels.h
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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
/*
Pixels. Graphics library for TFT displays.
Copyright (C) 2012-2013 Igor Repinetski
The code is written in C/C++ for Arduino and can be easily ported to any microcontroller by rewritting the low level pin access functions.
Text output methods of the library rely on Pixelmeister's font data format. See: http://pd4ml.com/pixelmeister
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
Commercial use of the library is possible for licensees of "Pixelmeister (for industry)" product.
This library includes some code portions and algoritmic ideas derived from works of
- Andreas Schiffler -- aschiffler at ferzkopp dot net (SDL_gfx Project)
- K. Townsend http://microBuilder.eu (lpc1343codebase Project)
- CMBSolutions git()cmbsolutions.nl
*/
/*
Currently supported platforms:
1. Reference platform: Arduino Mega, TFT_PQ 2.4 (ILI9325 controller), ITDB02 MEGA Shield v1.1
More platforms coming soon
*/
#ifndef PIXELS_BASE_H
#define PIXELS_BASE_H
// #define DISABLE_ANTIALIASING 1
//#if defined(__arm__)
//#include <avr/dtostrf.h>
//#endif
#if defined(__AVR__) || defined(TEENSYDUINO) || defined(GLOWDECK)
#include <Arduino.h>
#define regtype volatile uint8_t
#define regsize uint8_t
#define cbi(reg, bitmask) *reg &= ~bitmask
#define sbi(reg, bitmask) *reg |= bitmask
#define pulse_high(reg, bitmask) sbi(reg, bitmask); cbi(reg, bitmask);
#define pulse_low(reg, bitmask) cbi(reg, bitmask); sbi(reg, bitmask);
//#define prog_uchar const unsigned char
//#define prog_uint16_t const uint16_t
#elif defined(__SAM3X8E__)
#include <Arduino.h>
#define PROGMEM
#define prog_uchar const unsigned char
#define prog_uint16_t const uint16_t
#define pgm_read_byte(x) (*((char *)x))
#define pgm_read_word(x) ( ((*((unsigned char *)x + 1)) << 8) + (*((unsigned char *)x)))
#define pgm_read_byte_near(x) (*((char *)x))
#define pgm_read_byte_far(x) (*((char *)x))
// #define pgm_read_word(x) (*((short *)(x & 0xfffffffe)))
// #define pgm_read_word_near(x) (*((short *)(x & 0xfffffffe))
// #define pgm_read_word_far(x) (*((short *)(x & 0xfffffffe)))
#define pgm_read_word_near(x) ( ((*((unsigned char *)x + 1)) << 8) + (*((unsigned char *)x)))
#define pgm_read_word_far(x) ( ((*((unsigned char *)x + 1)) << 8) + (*((unsigned char *)x))))
#define PSTR(x) x
#define cbi(reg, bitmask) *reg &= ~bitmask
#define sbi(reg, bitmask) *reg |= bitmask
#define pulse_high(reg, bitmask) sbi(reg, bitmask); cbi(reg, bitmask);
#define pulse_low(reg, bitmask) cbi(reg, bitmask); sbi(reg, bitmask);
#define cport(port, data) port &= data
#define sport(port, data) port |= data
#define regtype volatile uint32_t
#define regsize uint32_t
#else
#define PROGMEM
#ifndef prog_uchar
#define prog_uchar byte
#define prog_uint16_t const uint16_t
#endif
#define regtype volatile uint32_t
#define regsize uint16_t
#endif
#define swap(a, b) {int16_t buf = a; a = b; b = buf;}
#define BITMASK_FONT 1
#define ANTIALIASED_FONT 2
#define HEADER_LENGTH 5
#define SCROLL_SMOOTH 1
#define SCROLL_CLEAN 2
#define FILL_TOPDOWN 0
#define FILL_LEFTRIGHT 0
#define FILL_DOWNTOP 1
#define FILL_RIGHTLEFT 2
#define ORIGIN_RELATIVE true // origin relative to a current scroll position
#define ORIGIN_ABSOLUTE false // origin matches physical device pixel coordinates
#define PORTRAIT 0
#define LANDSCAPE 1
#define PORTRAIT_FLIP 2
#define LANDSCAPE_FLIP 3
#define ipart(X) ((int16_t)(X))
// #define round(X) ((uint16_t)(((double)(X))+0.5))
#define fpart(X) (((double)(X))-(double)ipart(X))
#define rfpart(X) (1.0-fpart(X))
extern regtype *registerCS; // chip select
extern regsize bitmaskCS;
#define chipSelect() cbi(registerCS, bitmaskCS)
#define chipDeselect() sbi(registerCS, bitmaskCS)
class PRGB
{
public:
uint8_t red;
uint8_t green;
uint8_t blue;
PRGB(uint8_t r, uint8_t g, uint8_t b);
PRGB();
PRGB convert565toRGB(uint16_t color);
uint16_t convertRGBto565(PRGB color);
uint16_t convertTo565();
};
class PixelsBase
{
protected:
/* device physical dimension in portrait orientation */
int16_t deviceWidth;
int16_t deviceHeight;
/* device logical dimension in current orientation */
int16_t width;
int16_t height;
boolean landscape;
uint8_t orientation;
boolean relativeOrigin;
/* currently selected font */
prog_uchar* currentFont;
PRGB* foreground;
PRGB* background;
double lineWidth;
uint8_t fillDirection;
boolean antialiasing;
boolean scrollSupported;
boolean scrollEnabled;
int16_t currentScroll;
int16_t flipScroll;
boolean scrollCleanMode;
void printString(int16_t xx, int16_t yy, String text, boolean clean, int8_t kerning[] = NULL);
void drawGlyph(int16_t fontType, boolean clean, int16_t xx, int16_t yy,
int16_t height, prog_uchar* data, int16_t ptr, int16_t length);
virtual void setRegion(int16_t x1, int16_t y1, int16_t x2, int16_t y2) {};
void setCurrentPixel(PRGB* color);
void setCurrentPixel(int16_t color);
void fill(int b, int16_t x1, int16_t y1, int16_t x2, int16_t y2);
virtual void quickFill(int b, int16_t x1, int16_t y1, int16_t x2, int16_t y2) {};
void putColor(int16_t x, int16_t y, boolean steep, double weight);
PRGB* computeColor(PRGB* bg, double weight);
PRGB* computeColor(PRGB* fg, uint8_t opacity);
void resetRegion();
void hLine(int16_t x1, int16_t y1, int16_t x2);
void vLine(int16_t x1, int16_t y1, int16_t y2);
virtual void deviceWriteData(uint8_t hi, uint8_t lo) {};
virtual void scrollCmd() {};
virtual void drawCircleAntialiaced(int16_t x, int16_t y, int16_t radius, boolean bordermode);
virtual void drawFatLineAntialiased(int16_t x1, int16_t y1, int16_t x2, int16_t y2);
virtual void drawLineAntialiased(int16_t x1, int16_t y1, int16_t x2, int16_t y2);
virtual void drawRoundRectangleAntialiased(int16_t x, int16_t y, int16_t width, int16_t height, int16_t rx, int16_t ry, boolean bordermode);
int16_t* loadFileBytes(String);
PRGB* computedBgColor;
PRGB* computedFgColor;
PRGB* bgBuffer;
PRGB* fgBuffer;
public:
/**
Constructs a new <code>Pixels</code> object for the reference platform TFT_PQ 2.4 (ILI9325 controller) + ITDB02 MEGA Shield v1.1.
@param width target device width (in pixels)
@param height target device height (in pixels)
*/
PixelsBase(uint16_t width, uint16_t height);
/**
Initializes hardware with defaults.
*/
virtual void init() {};
/**
Sets the current coordinate space orientation.
Default value depends on initially given device width and height (PORTRAIT if height > width, otherwise LANDSCAPE).
@param orientation accepts PORTRAIT, LANDSCAPE, PORTRAIT_FLIP or LANDSCAPE_FLIP
*/
void setOrientation(uint8_t orientation);
/**
Returns the current coordinate space orientation.
@return the current orientation
@see setOrientation(uint8_t)
*/
inline uint8_t getOrientation() {
return orientation;
}
/**
Enables or disables antialiasing by a drawing of graphical primitives. The metod does not impact antialiased fonts.
Antialiased output in general requires more resources/time to output comparing to "grainy" output mode.
Takes no effect if Pixels_Antialiasing.h is not included
@param enable a boolean value that determines whether the antialiasing should be enabled or not
*/
virtual void enableAntialiasing(boolean enable) {
antialiasing = false;
}
/**
Gets the current antialiasing mode.
@return a boolean value that shows whether the antialiasing is be enabled or not
*/
inline boolean isAntialiased() {
return antialiasing;
}
/**
Enables or disables scroll feature.
@param enable a boolean value that determines whether the scroll feature should be enabled or not
@see scroll(int16_t,int8_t)
*/
inline void enableScroll(boolean enable) {
scrollEnabled = enable;
}
/**
@returns <i>true</i> if the target device can scroll and the scroll feature is enabled.
@see scroll(int16_t,int8_t)
@see enableScroll(boolean)
*/
inline boolean canScroll() {
return scrollEnabled & scrollSupported;
}
/**
Sets the current line width. For time being the line width is respected by
drawLine(int16_t,int16_t,int16_t,int16_t) and a line width control is still "under construction".
@param width new line width.
*/
inline void setLineWidth(double width) {
lineWidth = width;
}
/**
Returns the current line width.
@return the current line width.
*/
inline double getLineWidth() {
return lineWidth;
}
/**
Returns device width.
@return device width.
*/
inline int16_t getWidth() {
return width;
}
/**
Returns device height.
@return device height.
*/
inline int16_t getHeight() {
return height;
}
/**
Bounds the coordinate space to the device controller video RAM. The physical output depends on the actual scroll position.
*/
inline void setOriginRelative() {
relativeOrigin = true;
}
/**
Bounds the coordinate space to physical device pixels, ignoring actual scroll position.
@see scroll(int16_t,int8_t)
*/
inline void setOriginAbsolute() {
relativeOrigin = false;
}
/**
@return <i>true</i> if the current positioning is relative.
@see setOriginRelative()
@see setOriginAbsolute()
*/
inline boolean isOriginRelative() {
return relativeOrigin;
}
/**
Outout fine tuning method for slow devices
@param direction accepts FILL_TOPDOWN, FILL_LEFTRIGHT, FILL_DOWNTOP or FILL_RIGHTLEFT
*/
virtual void setFillDirection(uint8_t direction) {};
/**
Fills the screen with the current background color
*/
void clear();
/**
Sets the current background color to the specified color.
All subsequent relevant graphics operations use this specified color.
@param r the red component
@param g the green component
@param b the blue component
*/
inline void setBackground(uint8_t r, uint8_t g, uint8_t b) {
bgBuffer->red = r;
bgBuffer->green = g;
bgBuffer->blue = b;
setBackground(bgBuffer);
}
/**
Sets the current color to the specified color.
All subsequent graphics operations use this specified color.
@param r the red component
@param g the green component
@param b the blue component
*/
inline void setColor(uint8_t r, uint8_t g, uint8_t b) {
fgBuffer->red = r;
fgBuffer->green = g;
fgBuffer->blue = b;
setColor(fgBuffer);
}
/**
Sets the current background color to the specified color.
All subsequent relevant graphics operations use this specified color.
@param color color object reference
*/
inline void setBackground(PRGB* color) {
background = color;
}
/**
Sets the current color to the specified color.
All subsequent graphics operations use this specified color.
@param color color object
*/
inline void setColor(PRGB* color) {
foreground = color;
}
/**
Gets the graphics context's current background color.
@return the graphics context's current background color.
*/
inline PRGB* getBackground() {
return background;
}
/**
Gets the graphics context's current color.
@return the graphics context's current color.
*/
inline PRGB* getColor() {
return foreground;
}
/**
Gets a pixel color at the point
<code>(x, y)</code> in the current coordinate system.
If video RAM read is not supported by the hardware, returns the
graphics context's current background color
@param x <i>x</i> coordinate.
@param y <i>y</i> coordinate.
@return pixel color or the graphics context's current background color.
*/
PRGB* getPixel(int16_t x, int16_t y);
/**
Draws a pixel, using the current color, at the point
<code>(x, y)</code>
in the current coordinate system.
@param x <i>x</i> coordinate.
@param y <i>y</i> coordinate.
*/
void drawPixel(int16_t x, int16_t y);
/**
Draws a line, using the current color, between the points
<code>(x1, y1)</code> and <code>(x2, y2)</code>
in current coordinate system.
@param x1 the first point's <i>x</i> coordinate.
@param y1 the first point's <i>y</i> coordinate.
@param x2 the second point's <i>x</i> coordinate.
@param y2 the second point's <i>y</i> coordinate.
@see setOriginRelative()
@see setOriginAbsolute()
*/
void drawLine(int16_t x1, int16_t y1, int16_t x2, int16_t y2);
/**
Draws the outline of a circle, defined by center coordinates and a radius,
with the current color.
@param x the <i>x</i> coordinate of the circle center.
@param y the <i>y</i> coordinate of the circle center.
@param radius circle radius.
@see fillCircle(int16_t,int16_t,int16_t)
*/
void drawCircle(int16_t x, int16_t y, int16_t radius);
/**
Draws the outline of an oval.
The result is a circle or ellipse that fits within the
rectangle specified by the <code>x</code>, <code>y</code>,
<code>width</code>, and <code>height</code> arguments.
<p>
The oval covers an area that is
<code>width + 1</code> pixels wide
and <code>height + 1</code> pixels tall.
@param x the <i>x</i> coordinate of the upper left
corner of the oval to be drawn.
@param y the <i>y</i> coordinate of the upper left
corner of the oval to be drawn.
@param width the width of the oval to be drawn.
@param height the height of the oval to be drawn.
@see fillOval(int16_t,int16_t,int16_t,int16_t)
*/
void drawOval(int16_t x, int16_t y, int16_t width, int16_t height);
/**
Draws the outline of the specified rectangle.
The left and right edges of the rectangle are at
<code>x</code> and <code>x + width</code>.
The top and bottom edges are at
<code>y</code> and <code>y + height</code>.
The rectangle is drawn using the current color.
@param x the <i>x</i> coordinate
of the rectangle to be drawn.
@param y the <i>y</i> coordinate
of the rectangle to be drawn.
@param width the width of the rectangle to be drawn.
@param height the height of the rectangle to be drawn.
@see fillRectangle(int16_t,int16_t,int16_t,int16_t)
*/
void drawRectangle(int16_t x, int16_t y, int16_t width, int16_t height);
/**
Draws an outlined round-cornered rectangle using the current color.
The left and right edges of the rectangle
are at <code>x</code> and <code>x + width</code>,
respectively. The top and bottom edges of the rectangle are at
<code>y</code> and <code>y + height</code>.
@param x the <i>x</i> coordinate of the rectangle to be drawn.
@param y the <i>y</i> coordinate of the rectangle to be drawn.
@param width the width of the rectangle to be drawn.
@param height the height of the rectangle to be drawn.
@param r horizontal and vertical diameters of the arc
at the four corners.
@see fillRoundRectangle(int16_t,int16_t,int16_t,int16_t,int16_t)
*/
void drawRoundRectangle(int16_t x, int16_t y, int16_t width, int16_t height, int16_t r);
/**
Fills a circle, defined by center coordinates and a radius, with the current color.
@param x the <i>x</i> coordinate of the circle center.
@param y the <i>y</i> coordinate of the circle center.
@param radius circle radius.
@see drawCircle(int16_t,int16_t,int16_t)
*/
void fillCircle(int16_t x, int16_t y, int16_t radius);
/**
Fills an oval bounded by the specified rectangle with the
current color.
@param x the <i>x</i> coordinate of the upper left corner
of the oval to be filled.
@param y the <i>y</i> coordinate of the upper left corner
of the oval to be filled.
@param width the width of the oval to be filled.
@param height the height of the oval to be filled.
@see drawOval(int16_t,int16_t,int16_t,int16_t)
*/
void fillOval(int16_t x, int16_t y, int16_t width, int16_t height);
/**
Fills the specified rectangle.
The left and right edges of the rectangle are at
<code>x</code> and <code>x + width - 1</code>.
The top and bottom edges are at
<code>y</code> and <code>y + height - 1</code>.
The resulting rectangle covers an area
<code>width</code> pixels wide by
<code>height</code> pixels tall.
The rectangle is filled using the current color.
@param x the <i>x</i> coordinate
of the rectangle to be filled.
@param y the <i>y</i> coordinate
of the rectangle to be filled.
@param width the width of the rectangle to be filled.
@param height the height of the rectangle to be filled.
@see drawRectangle(int16_t,int16_t,int16_t,int16_t)
*/
void fillRectangle(int16_t x, int16_t y, int16_t width, int16_t height);
/**
Fills the specified rounded corner rectangle with the current color.
The left and right edges of the rectangle
are at <code>x</code> and <code>x + width - 1</code>,
respectively. The top and bottom edges of the rectangle are at
<code>y</code> and <code>y + height - 1</code>.
@param x the <i>x</i> coordinate of the rectangle to be filled.
@param y the <i>y</i> coordinate of the rectangle to be filled.
@param width the width of the rectangle to be filled.
@param height the height of the rectangle to be filled.
@param r horizontal and vertical diameters of the arc at the four corners.
@see drawRoundRectangle(int16_t,int16_t,int16_t,int16_t,int16_t)
*/
void fillRoundRectangle(int16_t x, int16_t y, int16_t width, int16_t height, int16_t r);
/**
Draws specified bitmap image.
The image is drawn with its top-left corner at
(<i>x</i>, <i>y</i>) in the current coordinate
space.
@param data the specified bitmap image to be drawn. This method does
nothing if <code>img</code> is null.
@param x the <i>x</i> coordinate.
@param y the <i>y</i> coordinate.
@param width the width of the image.
@param height the height of the image.
@see loadBitmap(int16_t,int16_t,int16_t,int16_t,String)
*/
int8_t drawBitmap(int16_t x, int16_t y, int16_t width, int16_t height, prog_uint16_t* data);
/**
Draws specified bitmap image.
The image is drawn with its top-left corner at
(<i>x</i>, <i>y</i>) in the current coordinate
space.
@param data compressed (with Pixelmeister) bitmap image bytes. This method does
nothing if <code>img</code> is null.
@param x the <i>x</i> coordinate.
@param y the <i>y</i> coordinate.
@see drawBitmap(int16_t,int16_t,int16_t,int16_t,int[])
*/
int8_t drawCompressedBitmap(int16_t x, int16_t y, uint8_t* data);
/**
Draws an icon, prepared with Pixelmeister.
The icon is drawn with its top-left corner at
(<i>x</i>, <i>y</i>) in the current coordinate
space.
@param data icon image bytes. This method does
nothing if <code>data</code> is null.
@param x the <i>x</i> coordinate.
@param y the <i>y</i> coordinate.
*/
void drawIcon(int16_t xx, int16_t yy, prog_uchar data[]);
/**
Paint icon pixels with background color. The icon should be in Pixelmeister format.
The icon is drawn with its top-left corner at
(<i>x</i>, <i>y</i>) in the current coordinate
space.
@param data icon image bytes. This method does
nothing if <code>data</code> is null.
@param x the <i>x</i> coordinate.
@param y the <i>y</i> coordinate.
*/
void cleanIcon(int16_t xx, int16_t yy, prog_uchar data[]);
/**
@return height of an icon, created with Pixelmeister
@param data icon image bytes.
*/
int16_t getIconHeight(prog_uchar* data) {
return pgm_read_byte_near(data + 4);
}
/**
@return width of an icon, created with Pixelmeister
@param data icon image bytes.
*/
int16_t getIconWidth(prog_uchar* data) {
return pgm_read_byte_near(data + 5);
}
/**
Loads from an external FAT-drive and draws specified bitmap image.
The image is drawn with its top-left corner at
(<i>x</i>, <i>y</i>) in the current coordinate
space.
@param path to the image.
@param x the <i>x</i> coordinate.
@param y the <i>y</i> coordinate.
@param width the width of the image.
@param height the height of the image.
@see drawBitmap(int16_t,int16_t,int16_t,int16_t,int[])
*/
int8_t loadBitmap(int16_t x, int16_t y, int16_t width, int16_t height, String path);
/**
Under construction
*/
void scroll(int16_t dy, int16_t x1, int16_t x2, int8_t flags);
/**
Scrolls the display content to a given number of pixels (if the device controller
supports scrolling). Scroll axis is vertical by portrait orientation and horizontal
by landscape orientation (hardware scpecifics).
SCROLL_CLEAN flag forces to paint wrapped regions with background color. SCROLL_SMOOTH
eases begin and end of a scroll movement (by big dy values).
@param dy negative or positive scroll distance
@param flags can be 0, SCROLL_SMOOTH or/and SCROLL_CLEAN
*/
void scroll(int16_t dy, int8_t flags);
/**
Sets this graphics context's font to the specified font.
All subsequent text operations using the context use this font.
@param font a font, converted from TTF with
<a href="http://pd4ml.com/pixelmeister/">Pixelmeister</a>.
*/
int setFont(prog_uchar font[]);
/**
Draws the text given by the specified string, using current font and color.
The baseline of the leftmost character is at position (<i>x</i>, <i>y</i>)
in the current coordinate system.
@param text the string to be drawn.
@param xx the <i>x</i> coordinate.
@param yy the <i>y</i> coordinate.
@param kerning optional array of integer kerning values in a range from
-99 to 99 to be applied to the string glyphs correspondingly. "-100" value ends
the kerning data. If the string has more characters than the array length, a value
precedes "-100" is used for the rest of the string glyphs.
@see setFont(prog_uchar font[])
@see setOriginRelative()
@see setOriginAbsolute()
@see cleanText(int16_t,int16_t,String,int8_t[])
*/
void print(int16_t xx, int16_t yy, String text, int8_t kerning[] = NULL);
/**
The method oposes print(int16_t,int16_t,String,int8_t[]) Erases the text given by
the specified string by filling glyph shapes with the current background color.
The baseline of the leftmost character is at position (<i>x</i>, <i>y</i>)
in the current coordinate system.
@param text the string to be erased.
@param xx the <i>x</i> coordinate.
@param yy the <i>y</i> coordinate.
@param kerning aptional array of integer kerning values in a range from
-99 to 99 to be applied to the string glyphs correspondingly. "-100" value ends
the kerning data. If the string has more characters than the array length, a value
precedes "-100" is usedas a kerning hint for the rest of the string glyphs.
@see setFont(prog_uchar font[])
@see setOriginRelative()
@see setOriginAbsolute()
@see print(int16_t,int16_t,String,int8_t[])
*/
void cleanText(int16_t xx, int16_t yy, String text, int8_t kerning[] = NULL);
/**
Gets the current font text line height
@return text line height in pixels
*/
int16_t getTextLineHeight();
/**
Gets the current font baseline offsett
@return text baseline offset
*/
int16_t getTextBaseline();
/**
Computes needed horizontal space to print the given text with print(int16_t,int16_t,String,int8_t)
@param text the text string.
@param kerning optional array of integer kerning values in a range from
-99 to 99 to be applied to the string glyphs correspondingly. "-100" value ends
the kerning data. If the string has more characters than the array length, a value
precedes "-100" is used as a kerning hint for the rest of the string glyphs.
@see print(int16_t,int16_t,String,int8_t[])
@return text baseline offset
*/
int16_t getTextWidth(String text, int8_t kerning[] = NULL);
};
class BitStream
{
private:
uint8_t* data;
size_t size;
int32_t bitpos;
public:
BitStream(uint8_t* src_buffer, size_t byte_size, int8_t offset = 0) {
bitpos = offset;
data = src_buffer;
size = byte_size + (offset >> 3);
}
bool endOfData() {
return (unsigned)((bitpos + 1) >> 3) >= size;
}
uint8_t testCurrentByte() {
uint8_t res = (uint8_t)pgm_read_byte_near(data + (bitpos >> 3));
return res;
}
uint8_t readBit() {
uint8_t res = (uint8_t)(pgm_read_byte_near(data + (bitpos >> 3)) & (uint8_t)((uint16_t)0x80 >> (bitpos & 7)));
bitpos++;
return res;
}
uint8_t readBits(uint8_t len) {
uint16_t end_offset = (bitpos + len - 1) >> 3;
if (end_offset >= size) {
return 0;
}
uint8_t i;
uint16_t byte_offset = bitpos >> 3;
if (byte_offset == end_offset) {
uint16_t x = pgm_read_byte_near(data + byte_offset);
i = (uint8_t)(x >> (8 - ((bitpos & 7) + len))) & ((1 << len) - 1);
}
else {
uint16_t x = ((uint16_t)pgm_read_byte_near(data + byte_offset) << 8) + pgm_read_byte_near(data + end_offset);
i = (uint8_t)(x >> (16 - ((bitpos & 7) + len))) & ((1 << len) - 1);
}
bitpos += len;
return i;
}
uint16_t readNumber() {
int16_t count;
int8_t ctr = 1;
int16_t base = 2;
do {
if (readBit() == 0) {
uint8_t bits = readBits(ctr);
count = base + bits;
break;
}
else {
ctr++;
base *= 2;
if (ctr == 7) {
uint8_t bits = readBits(ctr);
count = base + bits;
break;
}
}
}
while (true);
return (uint16_t)count;
}
};
#endif