flipperzero-firmware/applications/gui/view_port.h
2021-05-19 12:43:15 +03:00

93 lines
2.3 KiB
C

#pragma once
#include <input/input.h>
#include "canvas.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct ViewPort ViewPort;
typedef enum {
ViewPortOrientationHorizontal,
ViewPortOrientationVertical,
} ViewPortOrientation;
/*
* ViewPort Draw callback
* @warning called from GUI thread
*/
typedef void (*ViewPortDrawCallback)(Canvas* canvas, void* context);
/*
* ViewPort Input callback
* @warning called from GUI thread
*/
typedef void (*ViewPortInputCallback)(InputEvent* event, void* context);
/*
* ViewPort allocator
* always returns view_port or stops system if not enough memory.
*/
ViewPort* view_port_alloc();
/*
* ViewPort deallocator
* Ensure that view_port was unregistered in GUI system before use.
*/
void view_port_free(ViewPort* view_port);
/*
* Set view_port width.
* Will be used to limit canvas drawing area and autolayout feature.
* @param width - wanted width, 0 - auto.
*/
void view_port_set_width(ViewPort* view_port, uint8_t width);
uint8_t view_port_get_width(ViewPort* view_port);
/*
* Set view_port height.
* Will be used to limit canvas drawing area and autolayout feature.
* @param height - wanted height, 0 - auto.
*/
void view_port_set_height(ViewPort* view_port, uint8_t height);
uint8_t view_port_get_height(ViewPort* view_port);
/*
* Enable or disable view_port rendering.
* @param view_port - ViewPort instance
* @param enabled
* @warning automatically dispatches update event
*/
void view_port_enabled_set(ViewPort* view_port, bool enabled);
bool view_port_is_enabled(ViewPort* view_port);
/*
* ViewPort event callbacks
* @param callback - appropriate callback function
* @param context - context to pass to callback
*/
void view_port_draw_callback_set(ViewPort* view_port, ViewPortDrawCallback callback, void* context);
void view_port_input_callback_set(
ViewPort* view_port,
ViewPortInputCallback callback,
void* context);
/*
* Emit update signal to GUI system.
* Rendering will happen later after GUI system process signal.
*/
void view_port_update(ViewPort* view_port);
/*
* Set ViewPort orientation.
* @param orientation, display orientation, horizontal or vertical.
*/
void view_port_set_orientation(ViewPort* view_port, ViewPortOrientation orientation);
ViewPortOrientation view_port_get_orientation(const ViewPort* view_port);
#ifdef __cplusplus
}
#endif