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/*
* Copyright © 2008 Kristian Høgsberg
* Copyright © 2009 Chris Wilson
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <libgen.h>
#include <unistd.h>
#include <math.h>
#include <time.h>
#include <cairo.h>
#include <wayland-client.h>
#include "window.h"
#include "cairo-util.h"
struct image {
struct window *window;
struct widget *widget;
struct display *display;
char *filename;
cairo_surface_t *image;
};
static void
redraw_handler(struct widget *widget, void *data)
{
struct image *image = data;
struct rectangle allocation;
cairo_t *cr;
cairo_surface_t *surface;
double width, height, doc_aspect, window_aspect, scale;
widget_get_allocation(image->widget, &allocation);
surface = window_get_surface(image->window);
cr = cairo_create(surface);
widget_get_allocation(image->widget, &allocation);
cairo_rectangle(cr, allocation.x, allocation.y,
allocation.width, allocation.height);
cairo_clip(cr);
cairo_push_group(cr);
cairo_translate(cr, allocation.x, allocation.y);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 0, 0, 0, 1);
cairo_paint(cr);
width = cairo_image_surface_get_width(image->image);
height = cairo_image_surface_get_height(image->image);
doc_aspect = width / height;
window_aspect = (double) allocation.width / allocation.height;
if (doc_aspect < window_aspect)
scale = allocation.height / height;
else
scale = allocation.width / width;
cairo_scale(cr, scale, scale);
cairo_translate(cr,
(allocation.width - width * scale) / 2 / scale,
(allocation.height - height * scale) / 2 / scale);
cairo_set_source_surface(cr, image->image, 0, 0);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_paint(cr);
cairo_pop_group_to_source(cr);
cairo_paint(cr);
cairo_destroy(cr);
cairo_surface_destroy(surface);
}
static void
keyboard_focus_handler(struct window *window,
struct input *device, void *data)
{
struct image *image = data;
window_schedule_redraw(image->window);
}
static struct image *
image_create(struct display *display, const char *filename)
{
struct image *image;
char *b, *copy, title[512];;
image = malloc(sizeof *image);
if (image == NULL)
return image;
memset(image, 0, sizeof *image);
copy = strdup(filename);
b = basename(copy);
snprintf(title, sizeof title, "Wayland Image - %s", b);
free(copy);
image->filename = strdup(filename);
image->image = load_cairo_surface(filename);
image->window = window_create(display);
image->widget = frame_create(image->window, image);
window_set_title(image->window, title);
image->display = display;
window_set_user_data(image->window, image);
widget_set_redraw_handler(image->widget, redraw_handler);
window_set_keyboard_focus_handler(image->window,
keyboard_focus_handler);
widget_schedule_resize(image->widget, 500, 400);
return image;
}
int
main(int argc, char *argv[])
{
struct display *d;
int i;
d = display_create(argc, argv);
if (d == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
for (i = 1; i < argc; i++)
image_create (d, argv[i]);
display_run(d);
return 0;
}
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