55 lines
886 B
C
55 lines
886 B
C
#pragma once
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#include "canvas.h"
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#include <u8g2.h>
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struct Canvas {
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u8g2_t fb;
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uint8_t offset_x;
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uint8_t offset_y;
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uint8_t width;
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uint8_t height;
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};
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/*
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* Allocate memory and initialize canvas
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*/
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Canvas* canvas_init();
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/*
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* Free canvas memory
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*/
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void canvas_free(Canvas* canvas);
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/*
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* Reset canvas drawing tools configuration
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*/
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void canvas_reset(Canvas* canvas);
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/*
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* Commit canvas. Send buffer to display
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*/
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void canvas_commit(Canvas* canvas);
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/*
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* Get canvas buffer.
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* @return pointer to buffer
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*/
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uint8_t* canvas_get_buffer(Canvas* canvas);
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/*
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* Get canvas buffer size.
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* @return size of canvas in bytes
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*/
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size_t canvas_get_buffer_size(Canvas* canvas);
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/*
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* Set drawing region relative to real screen buffer
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*/
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void canvas_frame_set(
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Canvas* canvas,
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uint8_t offset_x,
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uint8_t offset_y,
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uint8_t width,
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uint8_t height);
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