/* [=]===^=[ framebuffer_callback ]=================================================================^===[=] */
static void framebuffer_callback(int32_t width, int32_t height) {
	state.screen_width = width;
	state.screen_height = height;
	state.viewport.x = 0;
	state.viewport.y = 0;
	state.viewport.w = width;
	state.viewport.h = height;

	float current_aspect = (float)width / (float)height;

	if(current_aspect > aspect_ratio) {					// Window is wider than the desired aspect ratio
		float new_width = height * aspect_ratio;		// Compute new width based on the height and the desired aspect ratio
		state.viewport.x = (width - new_width) / 2;
		state.viewport.w = new_width;
	} else if(current_aspect < aspect_ratio) {		// Window is taller than the desired aspect ratio
		float new_height = width / aspect_ratio;		// Compute new height based on the width and the desired aspect ratio
		state.viewport.y = (height - new_height) / 2;
		state.viewport.h = new_height;
	}
}

/* [=]===^=[ key_callback ]=================================================================^===[=] */
static void key_callback(uint32_t key, uint32_t action, uint32_t mods) {

	if(key == MKS_KEY_ESCAPE) {
		if(action == MKS_PRESSED) {
			mkfw_set_should_close(true);
		}
	}

	if(action == MKS_RELEASED) {
		switch(key) {
			// Handle shader CRT emulation toggle
			case MKS_KEY_F12: {
				state.toggle_crt_emulation = !state.toggle_crt_emulation;
			} break;

			// Handle fullscreen toggle
			case MKS_KEY_F11: {
				if(!keyboard_state[MKS_KEY_SHIFT]) {
					if(state.fullscreen) {
						mkfw_fullscreen(false);
						state.fullscreen = false;
					} else {
						mkfw_fullscreen(true);
						state.fullscreen = true;
					}
				} else if(keyboard_state[MKS_KEY_SHIFT]) {
#ifdef PROFILER
					state.overlay = !state.overlay;
#endif
				}
			} break;

			default: break;
		}
	}
}

/* [=]===^=[ mouse_move_callback ]=================================================================^===[=] */
static void mouse_move_callback(int32_t x, int32_t y) {
	state.mouse_dx += x;
	state.mouse_dy += y;
}

/* [=]===^=[ mouse_button_callback ]=================================================================^===[=] */
static void mouse_button_callback(uint8_t button, int action) {
	// printf("mouse_button\n");
}