unleashed-firmware/applications/gui/widget.h
あく 0af239ebc0
GUI: status bar rendering. Power: battery indicator. (#207)
* Menu: animation. Irukagotchi: idle image.
* Power: battery, usb activity widget
* Power: tune battery max voltage and clamp overshoot
* get initial charge state

Co-authored-by: Aleksandr Kutuzov <aku@plooks.com>
Co-authored-by: aanper <mail@s3f.ru>
2020-10-29 10:11:16 +03:00

58 lines
1.5 KiB
C

#pragma once
#include <input/input.h>
#include "canvas.h"
typedef struct Widget Widget;
typedef void (*WidgetDrawCallback)(CanvasApi* api, void* context);
typedef void (*WidgetInputCallback)(InputEvent* event, void* context);
/*
* Widget allocator
* always returns widget or stops system if not enough memory.
*/
Widget* widget_alloc();
/*
* Widget deallocator
* Ensure that widget was unregistered in GUI system before use.
*/
void widget_free(Widget* widget);
/*
* Set widget width.
* Will be used to limit canvas drawing area and autolayout feature.
* @param width - wanted width, 0 - auto.
*/
void widget_set_width(Widget* widget, uint8_t width);
uint8_t widget_get_width(Widget* widget);
/*
* Set widget height.
* Will be used to limit canvas drawing area and autolayout feature.
* @param height - wanted height, 0 - auto.
*/
void widget_set_height(Widget* widget, uint8_t height);
uint8_t widget_get_height(Widget* widget);
/*
* Enable or disable widget rendering.
* @param enabled.
*/
void widget_enabled_set(Widget* widget, bool enabled);
bool widget_is_enabled(Widget* widget);
/*
* Widget event callbacks
* @param callback - appropriate callback function
* @param context - context to pass to callback
*/
void widget_draw_callback_set(Widget* widget, WidgetDrawCallback callback, void* context);
void widget_input_callback_set(Widget* widget, WidgetInputCallback callback, void* context);
/*
* Emit update signal to GUI system.
* Rendering will happen later after GUI system process signal.
*/
void widget_update(Widget* widget);