os-update.c

/*
 * Copyright (C) 2014 The Android Open Source Project
 * Copyright (c) 2023, Roberto A. Foglietta <roberto.foglietta@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


#include <stdio.h>
#include <assert.h>
#include <stdbool.h>

#include "os-update.h"
#include "minui/minui.h"

#define MARGIN 10

const char logo_filename[] = "test";

extern long long int v_shift;

static gr_surface logo;

/* ------------------------------------------------------------------------ */

int
osUpdateScreenInit(bool blank)
{
	if (gr_init(blank)) {
		printf("Failed gr_init!\n");
		return -1;
	}

    if(blank) {
	    /* Clear the screen */
	    gr_color(0, 0, 0, 255);
	    gr_clear();
    }
	return 0;
}

/* ------------------------------------------------------------------------ */

int
loadLogo(const char *filename, const char *dir)
{
	int ret = 0;

	if (logo)
		res_free_surface(logo);

	if ((ret = res_create_display_surface(filename, dir, &logo)) < 0)
		fprintf(stderr, "ERROR: %s(%s), returned: %d.\n",
			__func__, filename, ret);

	return ret;
}

/* ------------------------------------------------------------------------ */

int
gr_logo(void)
{
	if (!logo) {
		printf("No logo loaded\n");
		return -1;
	}
	
    /* draw logo to middle of the screen */
    int fbw = gr_fb_width();
    int fbh = gr_fb_height();
    int logow = gr_get_width(logo);
    int logoh = gr_get_height(logo);
    int dx = (fbw - logow) >> 1;
    int dy = (fbh - logoh) >> 1;

    gr_blit(logo, 0, 0, logow, logoh, dx, dy + v_shift);

	return 0;
}

int
showLogo(void)
{
    if (!logo) {
        printf("No logo loaded\n");
        return -1;
    }

    gr_logo();
    gr_flip();

    return 0;
}

/* ------------------------------------------------------------------------ */

void
osUpdateScreenShowProgress(int percentage)
{
	int fbw, fbh, splitpoint, x1, x2, y1, y2;

	fbw = gr_fb_width();
	fbh = gr_fb_height();

	splitpoint = (fbw - 2 * MARGIN) * percentage / 100;

	assert(splitpoint >= 0);
	assert(splitpoint <= fbw);

	x1 = MARGIN;
	y1 = fbh / 2 + MARGIN;
	x2 = MARGIN + splitpoint;
	y2 = fbh / 2 + 20;

	/* white color for the beginning of the progressbar */
	gr_color(255, 255, 255, 255);

	gr_fill(x1, y1, x2, y2);

	/* Grey color for the end part of the progressbar */
	gr_color(84, 84, 84, 255);

	x1 = MARGIN + splitpoint;
	x2 = fbw - MARGIN;

	gr_fill(x1, y1, x2, y2);

	/* draw logo on the top of the progress bar if it is loaded */
	if (logo) gr_logo();

	/* And finally draw everything */
	gr_flip();
}

/* ------------------------------------------------------------------------ */

void
osUpdateScreenExit(void)
{
	if (logo)
		res_free_surface(logo);

	gr_exit();
}