flipperzero-firmware/applications/services/gui/canvas_i.h
あく b11b9f1b38
Gui: Direct Draw API (#2215)
* Furi: allow on-fly thread priority change. Gui: Direct Draw API. DirectDraw debug app.
* Gui: drop input in direct draw
* Furi: handle priority change for starting threads
* DirectDraw: rollback to FreeRTOS primitives for priority change
2022-12-29 21:35:26 +10:00

79 lines
1.5 KiB
C

/**
* @file canvas_i.h
* GUI: internal Canvas API
*/
#pragma once
#include "canvas.h"
#include <u8g2.h>
/** Canvas structure
*/
struct Canvas {
u8g2_t fb;
CanvasOrientation orientation;
uint8_t offset_x;
uint8_t offset_y;
uint8_t width;
uint8_t height;
};
/** Allocate memory and initialize canvas
*
* @return Canvas instance
*/
Canvas* canvas_init();
/** Free canvas memory
*
* @param canvas Canvas instance
*/
void canvas_free(Canvas* canvas);
/** Get canvas buffer.
*
* @param canvas Canvas instance
*
* @return pointer to buffer
*/
uint8_t* canvas_get_buffer(Canvas* canvas);
/** Get canvas buffer size.
*
* @param canvas Canvas instance
*
* @return size of canvas in bytes
*/
size_t canvas_get_buffer_size(Canvas* canvas);
/** Set drawing region relative to real screen buffer
*
* @param canvas Canvas instance
* @param offset_x x coordinate offset
* @param offset_y y coordinate offset
* @param width width
* @param height height
*/
void canvas_frame_set(
Canvas* canvas,
uint8_t offset_x,
uint8_t offset_y,
uint8_t width,
uint8_t height);
/** Set canvas orientation
*
* @param canvas Canvas instance
* @param orientation CanvasOrientation
*/
void canvas_set_orientation(Canvas* canvas, CanvasOrientation orientation);
/** Get canvas orientation
*
* @param canvas Canvas instance
*
* @return CanvasOrientation
*/
CanvasOrientation canvas_get_orientation(const Canvas* canvas);