CanvasHMSB Class Reference

A special version of canvas for monochrome widget with 8pixel/byte arranged horizontally. Usefull for monochrome widget (e.g.text) even for color RGB_COLOR_INDEX_8b display device. More...

#include <canvas.h>

Inheritance diagram for CanvasHMSB:

Collaboration diagram for CanvasHMSB:

Public Member Functions
	CanvasHMSB (uint8_t canvas_width_pixel, uint8_t canvas_height_pixel)
	constructor for CanvasHMSB
void	fill_canvas_with_color (ColorIndex color)
	fill the canvas buffer with 0x00 (i.e. BLACK) of 0xFF (WHITE)
void	draw_pixel (const int x, const int y, const ColorIndex color=ColorIndex::WHITE)
	the graphic primitive to draw a pixel
Public Member Functions inherited from Canvas
	Canvas (uint8_t canvas_width_pixel, uint8_t canvas_height_pixel)
	Construct a new Canvas object.
virtual void	clear_canvas_buffer ()
	fill the canvas buffer with 0x00

Additional Inherited Members
Public Attributes inherited from Canvas
CanvasFormat	canvas_format
	the actual format of the canvas
ColorIndex	fg_color
	a copy of the widget foreground color
ColorIndex	bg_color
	a copy of the widget background color
uint8_t	canvas_width_pixel
	the width (in pixel) of the canvas and also of those of the associated widget
uint8_t	canvas_height_pixel
	the height (in pixel) of the canvas and also of those of the associated widget
size_t	canvas_buffer_size_byte
	the size (in bytes) of the buffer
size_t	canvas_buffer_size_pixel
	the size (in pixel) of the buffer
uint8_t *	canvas_buffer {nullptr}
	the 8bit canvas buffer
uint16_t *	canvas_16buffer {nullptr}
	the 16bit canvasbuffer

Detailed Description

A special version of canvas for monochrome widget with 8pixel/byte arranged horizontally. Usefull for monochrome widget (e.g.text) even for color RGB_COLOR_INDEX_8b display device.

Constructor & Destructor Documentation

CanvasHMSB()

CanvasHMSB::CanvasHMSB	(	uint8_t	canvas_width_pixel,
		uint8_t	canvas_height_pixel )

constructor for CanvasHMSB

Parameters

canvas_width_pixel
canvas_height_pixel

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Member Function Documentation

draw_pixel()

void CanvasHMSB::draw_pixel ( const int x, const int y, const ColorIndex color = ColorIndex::WHITE )

virtual

the graphic primitive to draw a pixel

Parameters

x	the x position of the pixel
y	the y position of the pixel
color	the color of the pixel

Implements Canvas.

fill_canvas_with_color()

void CanvasHMSB::fill_canvas_with_color ( ColorIndex color )

virtual

fill the canvas buffer with 0x00 (i.e. BLACK) of 0xFF (WHITE)

Note

the conversion from color bit (0b0 or 0b1) to RGB_COLOR_INDEX_8b is done by the device after calling the show() member according to fg_color and bg_color

Parameters

color

Implements Canvas.

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The documentation for this class was generated from the following files:

• canvas.h
• canvas.cpp