1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/* See LICENSE file for copyright and license details. */
#include "common.h"
int
load_image(struct file *file, int errors_to_stderr)
{
const char *error_message;
GError *error = NULL;
GtkWidget *dialog;
GdkPixbuf *image;
GdkPixbufLoader *loader = NULL;
struct stat st;
unsigned char buffer[8 << 10];
ssize_t r;
int fd, ret = 1;
if (!file)
return 0;
fd = open(file->path, O_RDONLY | O_NOCTTY);
if (fd < 0)
goto fail_errno;
if (fstat(fd, &st))
goto fail_errno;
if (!S_ISREG(st.st_mode)) {
error_message = "Not a regular file";
goto fail;
}
loader = gdk_pixbuf_loader_new();
if (!loader)
goto fail_errno;
for (;;) {
r = read(fd, buffer, sizeof(buffer));
if (r <= 0) {
if (!r)
break;
if (errno == EINTR)
continue;
goto fail_errno;
}
if (!gdk_pixbuf_loader_write(loader, buffer, (size_t)r, &error))
goto fail_gerror;
}
if (!gdk_pixbuf_loader_close(loader, &error)) {
fail_gerror:
error_message = error->message;
goto fail;
}
image = gdk_pixbuf_loader_get_pixbuf(loader);
if (!image) {
error_message = "Unsupported image format";
goto fail;
}
g_object_ref(image);
g_clear_object(&file->image);
file->size = st.st_size;
file->image = image;
out:
g_clear_object(&loader);
if (fd >= 0)
close(fd);
return ret;
fail_errno:
error_message = strerror(errno);
fail:
if (errors_to_stderr) {
weprintf("Cannot open %s: %s", file->path, error_message);
} else {
dialog = gtk_message_dialog_new(GTK_WINDOW(window), GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE, "Cannot open %s", file->path);
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog), "%s", error_message);
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
}
g_clear_error(&error);
ret = 0;
goto out;
}
static void
preview_image(GtkFileChooser *chooser, GtkWidget *preview_widget)
{
char *filename;
GdkPixbuf *preview;
GtkWidget *image, *label;
filename = gtk_file_chooser_get_preview_filename(chooser);
preview = !filename ? NULL :
gdk_pixbuf_new_from_file_at_scale(filename, PREVIEW_WIDTH, PREVIEW_HEIGHT, 1, NULL);
image = g_object_get_data(G_OBJECT(preview_widget), "image");
label = g_object_get_data(G_OBJECT(preview_widget), "label");
gtk_image_set_from_pixbuf(GTK_IMAGE(image), preview);
if (preview) {
gtk_widget_show(image);
gtk_widget_hide(label);
} else {
gtk_widget_hide(image);
gtk_widget_show(label);
}
gtk_file_chooser_set_preview_widget_active(chooser, 1);
if (preview)
g_object_unref(preview);
g_free(filename);
}
static const char *
get_home_directory(void)
{
static const char *home_directory = NULL;
struct passwd *pwd;
if (home_directory)
return home_directory;
home_directory = getenv("HOME");
if (!home_directory || !*home_directory) {
pwd = getpwuid(getuid());
if (pwd && pwd->pw_dir && *pwd->pw_dir)
home_directory = pwd->pw_dir;
else
home_directory = ".";
}
return home_directory;
}
GtkFileChooser *
construct_chooser(void)
{
GtkWidget *widget, *image, *label, *preview;
GtkFileChooser *chooser;
widget = gtk_file_chooser_dialog_new("Open",
GTK_WINDOW(window),
GTK_FILE_CHOOSER_ACTION_OPEN,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
NULL);
chooser = GTK_FILE_CHOOSER(widget);
g_object_set(gtk_settings_get_default(), "gtk-recent-files-enabled", 0, NULL);
gtk_file_chooser_set_select_multiple(chooser, 1);
gtk_file_chooser_set_current_folder(chooser, get_home_directory());
gtk_file_chooser_set_local_only(chooser, 1);
gtk_file_chooser_set_do_overwrite_confirmation(chooser, 0);
preview = gtk_vbox_new(0, 6);
image = gtk_image_new();
label = gtk_label_new("Preview");
gtk_widget_set_size_request(preview, PREVIEW_WIDTH, PREVIEW_HEIGHT);
gtk_widget_set_size_request(image, PREVIEW_WIDTH, PREVIEW_HEIGHT);
gtk_box_pack_start(GTK_BOX(preview), image, 0, 0, 0u);
gtk_box_pack_start(GTK_BOX(preview), label, 0, 0, 0u);
g_object_set_data(G_OBJECT(preview), "image", image);
g_object_set_data(G_OBJECT(preview), "label", label);
gtk_file_chooser_set_preview_widget(chooser, preview);
gtk_file_chooser_set_use_preview_label(chooser, 0);
gtk_file_chooser_set_preview_widget_active(chooser, 1);
gtk_widget_hide(image);
g_signal_connect(chooser, "update-preview", G_CALLBACK(&preview_image), preview);
return chooser;
}
|
