somebar/src/common.hpp

// somebar - dwl bar
// See LICENSE file for copyright and license details.

#pragma once
#include <memory>
#include <string>
#include <vector>
#include <wayland-client.h>
#include <linux/input-event-codes.h>
#include <cairo/cairo.h>
#include <pango/pango.h>
#include "wlr-layer-shell-unstable-v1-client-protocol.h"

struct Color {
	Color() {}
	constexpr Color(uint8_t r, uint8_t g, uint8_t b, uint8_t a=255) : r(r), g(g), b(b), a(a) { }
	uint8_t r, g, b, a {255};
};
struct ColorScheme {
	Color fg, bg;
};
union Arg {
	unsigned int ui;
	const void* v;
};
struct Monitor;

enum TagState { None, Active = 0x01, Urgent = 0x02 };
enum { ClkNone, ClkTagBar, ClkLayoutSymbol, ClkWinTitle, ClkStatusText };
struct Button {
	int control;
	int btn; // <linux/input-event-codes.h>
	void (*func)(Monitor& mon, const Arg& arg);
	const Arg arg;
};

extern wl_display* display;
extern wl_compositor* compositor;
extern wl_shm* shm;
extern zwlr_layer_shell_v1* wlrLayerShell;

void spawn(Monitor&, const Arg& arg);
[[noreturn]] void die(const char* why);

// wayland smart pointers
template<typename T>
struct wl_deleter;
#define WL_DELETER(type, fn) template<> struct wl_deleter<type> { \
	void operator()(type* v) { if(v) fn(v); } \
	}

template<typename T>
using wl_unique_ptr = std::unique_ptr<T, wl_deleter<T>>;

WL_DELETER(wl_buffer, wl_buffer_destroy);
WL_DELETER(wl_output, wl_output_release);
WL_DELETER(wl_pointer, wl_pointer_release);
WL_DELETER(wl_seat, wl_seat_release);
WL_DELETER(wl_surface, wl_surface_destroy);
WL_DELETER(zwlr_layer_surface_v1, zwlr_layer_surface_v1_destroy);

WL_DELETER(cairo_t, cairo_destroy);
WL_DELETER(cairo_surface_t, cairo_surface_destroy);

WL_DELETER(PangoContext, g_object_unref);
WL_DELETER(PangoLayout, g_object_unref);