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