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Pixels.h
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Pixels.h
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/*
* Pixels. Graphics library for TFT displays.
*
* Copyright (C) 2012-2015 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
// #define NO_FILL_TEXT_BACKGROUND 1
// #define NO_TEXT_WRAP 1
#define SPI_CLOCK_DIV4 0x00
#define SPI_CLOCK_DIV16 0x01
#define SPI_CLOCK_DIV64 0x02
#define SPI_CLOCK_DIV128 0x03
#define SPI_CLOCK_DIV2 0x04
#define SPI_CLOCK_DIV8 0x05
#define SPI_CLOCK_DIV32 0x06
// #define SPI_CLOCK_DIV64 0x07
#define SPI_MODE0 0x00
#define SPI_MODE1 0x04
#define SPI_MODE2 0x08
#define SPI_MODE3 0x0C
#define SPI_MODE_MASK 0x0C // CPOL = bit 3, CPHA = bit 2 on SPCR
#define SPI_CLOCK_MASK 0x03 // SPR1 = bit 1, SPR0 = bit 0 on SPCR
#define SPI_2XCLOCK_MASK 0x01 // SPI2X = bit 0 on SPSR
#if defined(__SAM3X8E__)
#include <avr/dtostrf.h>
#endif
#if defined(__AVR__) || defined(TEENSYDUINO)
#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 TRANSPARENT_TEXT_BACKGROUND 0
#define FILL_TEXT_BACKGROUND 1
#define ipart(X) ((int16_t)(X))
#define iround(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)
// Color definitions
#define ILI9341_BLACK 0x0000 /* 0, 0, 0 */
#define ILI9341_NAVY 0x000F /* 0, 0, 128 */
#define ILI9341_DARKGREEN 0x03E0 /* 0, 128, 0 */
#define ILI9341_DARKCYAN 0x03EF /* 0, 128, 128 */
#define ILI9341_MAROON 0x7800 /* 128, 0, 0 */
#define ILI9341_PURPLE 0x780F /* 128, 0, 128 */
#define ILI9341_OLIVE 0x7BE0 /* 128, 128, 0 */
#define ILI9341_LIGHTGREY 0xC618 /* 192, 192, 192 */
#define ILI9341_DARKGREY 0x7BEF /* 128, 128, 128 */
#define ILI9341_BLUE 0x001F /* 0, 0, 255 */
#define ILI9341_GREEN 0x07E0 /* 0, 255, 0 */
#define ILI9341_CYAN 0x07FF /* 0, 255, 255 */
#define ILI9341_RED 0xF800 /* 255, 0, 0 */
#define ILI9341_MAGENTA 0xF81F /* 255, 0, 255 */
#define ILI9341_YELLOW 0xFFE0 /* 255, 255, 0 */
#define ILI9341_WHITE 0xFFFF /* 255, 255, 255 */
#define ILI9341_ORANGE 0xFD20 /* 255, 165, 0 */
#define ILI9341_GREENYELLOW 0xAFE5 /* 173, 255, 47 */
#define ILI9341_PINK 0xF81F
#define ILI9341_CARDBLUE 0x0169 /* 0, 45, 75 */
#define ILI9341_DARKBLUE 0x0000 /* 0, 45, 75 */
class RGB {
private:
uint16_t col;
public:
uint8_t red;
uint8_t green;
uint8_t blue;
RGB(uint8_t r, uint8_t g, uint8_t b);
RGB();
void setColor(int32_t r, int32_t g, int32_t b);
RGB convert565toRGB(uint16_t color);
uint16_t convertRGBto565(RGB color);
uint16_t convertTo565();
};
class Bounds {
public:
int16_t x1;
int16_t y1;
int16_t x2;
int16_t y2;
Bounds( int16_t xx1, int16_t yy1, int16_t xx2, int16_t yy2 ) {
x1 = xx1;
y1 = yy1;
x2 = xx2;
y2 = yy2;
}
};
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;
RGB* foreground;
RGB* background;
double lineWidth;
uint8_t fillDirection;
boolean antialiasing;
boolean scrollSupported;
boolean scrollEnabled;
int16_t currentScroll;
int16_t flipScroll;
boolean scrollCleanMode;
uint16_t extraScrollDelay;
int16_t caretX;
int16_t caretY;
int8_t glyphPrintMode;
#ifndef NO_TEXT_WRAP
boolean wrapText;
int16_t textWrapMarginLeft;
int16_t textWrapMarginRight;
int16_t textWrapLineGap;
boolean textWrapScroll;
int16_t textWrapMarginBottom;
RGB* textWrapScrollFill;
#endif
int gfxOpNestingDepth;
boolean transformBounds(Bounds& bb);
boolean checkBounds(Bounds& bb);
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 length);
#ifndef NO_TEXT_WRAP
int16_t computeBreakPos(String text, int16_t t);
#endif
virtual int32_t setRegion(int16_t x1, int16_t y1, int16_t x2, int16_t y2) { return -1; }
void setCurrentPixel(RGB* 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);
RGB* computeColor(RGB* bg, double weight);
RGB* computeColor(RGB* 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);
RGB* computedBgColor;
RGB* computedFgColor;
RGB* bgBuffer;
RGB* fgBuffer;
virtual void beginGfxOperation() {
chipSelect();
gfxOpNestingDepth++;
}
virtual void endGfxOperation(boolean force) {
gfxOpNestingDepth--;
if ( gfxOpNestingDepth <= 0 ) {
chipDeselect();
gfxOpNestingDepth = 0;
}
}
void endGfxOperation() {
endGfxOperation(false);
}
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->setColor(r, g, 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->setColor(r, g, 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(RGB* 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(RGB* color) {
foreground = color;
}
/**
* Gets the graphics context's current background color.
* @return the graphics context's current background color.
*/
inline RGB* getBackground() {
return background;
}
/**
* Gets the graphics context's current color.
* @return the graphics context's current color.
*/
inline RGB* 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.
*/
RGB* 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, prog_uchar* 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);
/**
* Returns the current scroll position
*/
int getScroll() {
// return orientation < 2 ? currentScroll : deviceHeight - currentScroll;
return currentScroll;
}
void setScrollStepDelay(uint16_t ms) {
extraScrollDelay = ms;
}
/**
* returns current print mode
* @see setPrintMode(int8_t)
*/
int8_t getPrintMode() {
return glyphPrintMode;
}
/**
* sets text output mode
* @param printMode FILL_TEXT_BACKGROUND=1 forces to fill glyph background with current background color;
* TRANSPARENT_TEXT_BACKGROUND=0 forces to print glyphs with no background (default)
*/
void setPrintMode(int8_t printMode) {
#ifndef NO_FILL_TEXT_BACKGROUND
glyphPrintMode = printMode;
#endif
}
/**
* Enables text line auto wrap
* @param marginLeft start X coordinate of wrapped tex line
* @param marginRight screen space right side, to avoid to print to
* @param lineGap vertical gap between text lines
*/
void enableTextWrap(int16_t marginLeft, int16_t marginRight, int16_t lineGap) {
#ifndef NO_TEXT_WRAP
wrapText = true;
textWrapMarginLeft = marginLeft;
textWrapMarginRight = marginRight;
textWrapLineGap = lineGap;
#endif
}
/**
* Disables text line auto wrap
* @see enableTextWrap(marginLeft,marginRight,int16_t)
*/
void disableTextWrap() {
#ifndef NO_TEXT_WRAP
wrapText = false;
#endif
}
/**
* Enables auto-scroll if a wrapped line does not fit remaining vertical space.
* Takes no effect if text wrap is not enabled or by landscape page orientation.
* @param marginBottom bottom screen space, to avoid to print to
* @param scrollFill background color to pre-fill blank area
* @see enableTextWrap(marginLeft,marginRight,int16_t)
*/
void enableTextWrapScroll(int16_t marginBottom, RGB* scrollFill = NULL) {
#ifndef NO_TEXT_WRAP
textWrapMarginBottom = marginBottom;
textWrapScrollFill = scrollFill;
textWrapScroll = true;
#endif
}
/**
* Disables auto-scroll if a wrapped line
* @see enableTextWrapScroll(marginBottom,scrollFill)
*/
void disableTextWrapScroll() {
#ifndef NO_TEXT_WRAP
textWrapScroll = false;
#endif
}
int16_t getCaretX() {
return caretX;
}
int16_t getCaretY() {
return caretY;
}
/**
* 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);
/**
* Returns width for a given character
*/
int16_t getCharWidth(char c);
void scrollText( int16_t x, int16_t y, String text, uint8_t scrollStep, uint8_t repeat, uint16_t maxScroll );
};
class BitStream {
private:
prog_uchar* data;
size_t size;
int32_t bitpos;
public:
BitStream (prog_uchar* src_buffer, size_t byte_size, int8_t offset = 0) {
bitpos = offset;
data = src_buffer;
size = byte_size + (offset>>3);
}
bool endOfData() {
return (size_t)((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