The canvas is a virtual memory in which the widget draws. More...

#include <canvas.h>

Inheritance diagram for Canvas:

Collaboration diagram for Canvas:

Public Member Functions
virtual void	create_canvas_buffer ()=0
	Create a canvas buffer object.

virtual void	fill_canvas_with_color (ColorIndex color)=0
	fill the canvas with a given color

	Canvas (uint8_t canvas_width_pixel, uint8_t canvas_height_pixel)
	Construct a new Canvas object.

void	clear_canvas_buffer ()
	fill the canvas buffer with 0x00

virtual void	draw_pixel (const int x, const int y, const ColorIndex color=ColorIndex::WHITE)=0
	the graphic primitive to draw a pixel

Public Attributes
CanvasFormat	canvas_format
	the actual format of the canvas

ColorIndex	canvas_fg_color
	a copy of the widget foreground color

ColorIndex	canvas_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
	the size (in bytes) of the buffer

uint8_t *	canvas_buffer {nullptr}
	the buffer

Detailed Description

The canvas is a virtual memory in which the widget draws.

Constructor & Destructor Documentation

Canvas::Canvas	(	uint8_t	canvas_width_pixel,
		uint8_t	canvas_height_pixel )

Construct a new Canvas object.

Parameters

canvas_width_pixel	Width of the canvas (in pixel)
canvas_height_pixel	height of the canvas(in pixel)

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

pure virtual

the graphic primitive to draw a pixel

Parameters

virtual void Canvas::fill_canvas_with_color ( ColorIndex color )

pure virtual

fill the canvas with a given color

Parameters

color

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