src/imagelink.c

   1 /* logjam - a GTK client for LiveJournal.
   2  * Copyright (C) 2000-2004 Evan Martin <evan@livejournal.com>
   3  *
   4  * vim: tabstop=4 shiftwidth=4 noexpandtab :
   5  */
   6
   7 #include "gtk-all.h"
   8 #include "util-gtk.h"
   9 #include "conf.h"
  10 #include "jamdoc.h"
  11 #include "util.h"
  12
  13 typedef struct {
  14   GtkWidget *dlg;
  15   GtkWidget *url, *get, *width, *height;
  16 } ImageDlg;
  17
  18 static void
  19 url_changed_cb(ImageDlg *idlg) {
  20   const char *text = gtk_entry_get_text(GTK_ENTRY(idlg->url));
  21   gtk_widget_set_sensitive(idlg->get, text && text[0]);
  22   gtk_dialog_set_response_sensitive(GTK_DIALOG(idlg->dlg),
  23       GTK_RESPONSE_OK, text && text[0]);
  24 }
  25
  26 static void
  27 size_cb(ImageDlg *idlg, gint width, gint height) {
  28   char *text;
  29   text = g_strdup_printf("%d", width);
  30   gtk_entry_set_text(GTK_ENTRY(idlg->width), text);
  31   g_free(text);
  32   text = g_strdup_printf("%d", height);
  33   gtk_entry_set_text(GTK_ENTRY(idlg->height), text);
  34   g_free(text);
  35 }
  36
  37 static void
  38 get_url_cb(ImageDlg *idlg) {
  39   GdkPixbufLoader *loader;
  40   const char *url;
  41   GString *img;
  42   GError *err = NULL;
  43
  44   /* XXX suboptimal: we retrieve the entire image
  45    * when we only need a few bytes. */
  46   url = gtk_entry_get_text(GTK_ENTRY(idlg->url));
  47   img = net_get_run(_("Retrieving Image..."), GTK_WINDOW(idlg->dlg), url);
  48
  49   if (!img)
  50     return;
  51
  52   loader = gdk_pixbuf_loader_new();
  53   g_signal_connect_swapped(G_OBJECT(loader), "size-prepared",
  54       G_CALLBACK(size_cb), idlg);
  55   if (!gdk_pixbuf_loader_write(loader, (unsigned char*)img->str, img->len, &err)) {
  56     jam_warning(GTK_WINDOW(idlg->dlg),
  57         _("Error loading image: %s."), err->message);
  58     g_error_free(err);
  59   }
  60   gdk_pixbuf_loader_close(loader, NULL);
  61   g_object_unref(G_OBJECT(loader));
  62 }
  63
  64 static void
  65 make_dialog(ImageDlg *idlg, GtkWindow *win) {
  66   GtkWidget *vbox, *hbox, *dimbox;
  67   GtkSizeGroup *sg;
  68
  69   idlg->dlg = gtk_dialog_new_with_buttons(_("Insert Image"),
  70       win, GTK_DIALOG_MODAL,
  71       GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
  72       GTK_STOCK_OK, GTK_RESPONSE_OK,
  73       NULL);
  74   gtk_dialog_set_default_response(GTK_DIALOG(idlg->dlg),
  75       GTK_RESPONSE_OK);
  76   g_signal_connect_swapped(G_OBJECT(idlg->dlg), "show",
  77       G_CALLBACK(url_changed_cb), idlg);
  78
  79   sg = gtk_size_group_new(GTK_SIZE_GROUP_HORIZONTAL);
  80
  81   vbox = gtk_vbox_new(FALSE, 12);
  82
  83   idlg->url = gtk_entry_new();
  84   g_signal_connect_swapped(G_OBJECT(idlg->url), "changed",
  85       G_CALLBACK(url_changed_cb), idlg);
  86   gtk_box_pack_start(GTK_BOX(vbox),
  87       labelled_box_new_sg(_("_URL:"), idlg->url, sg),
  88       FALSE, FALSE, 0);
  89
  90   hbox = gtk_hbox_new(FALSE, 6);
  91
  92   dimbox = gtk_vbox_new(FALSE, 6);
  93   idlg->width = gtk_entry_new();
  94   gtk_entry_set_width_chars(GTK_ENTRY(idlg->width), 6);
  95   gtk_box_pack_start(GTK_BOX(dimbox),
  96       labelled_box_new_sg(_("_Width:"), idlg->width, sg),
  97       FALSE, FALSE, 0);
  98
  99   idlg->height = gtk_entry_new();
 100   gtk_entry_set_width_chars(GTK_ENTRY(idlg->height), 6);
 101   gtk_box_pack_start(GTK_BOX(dimbox),
 102       labelled_box_new_sg(_("_Height:"), idlg->height, sg),
 103       FALSE, FALSE, 0);
 104
 105   gtk_box_pack_start(GTK_BOX(hbox), dimbox, FALSE, FALSE, 0);
 106
 107   dimbox = gtk_vbox_new(FALSE, 6);
 108   idlg->get = gtk_button_new_with_mnemonic(_("_Retrieve Dimensions from Network"));
 109   g_signal_connect_swapped(G_OBJECT(idlg->get), "clicked",
 110       G_CALLBACK(get_url_cb), idlg);
 111   gtk_box_pack_start(GTK_BOX(dimbox), idlg->get, TRUE, FALSE, 0);
 112
 113   gtk_box_pack_end(GTK_BOX(hbox), dimbox, FALSE, FALSE, 0);
 114
 115   gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
 116
 117   jam_dialog_set_contents(GTK_DIALOG(idlg->dlg), vbox);
 118 }
 119
 120 static gboolean
 121 is_image_link(const char *str) {
 122   if (!str)
 123     return FALSE;
 124   return (g_str_has_prefix(str, "http://") ||
 125           g_str_has_prefix(str, "ftp://"));
 126 }
 127
 128 void
 129 image_dialog_run(GtkWindow *win, JamDoc *doc) {
 130   STACK(ImageDlg, idlg);
 131   GtkTextBuffer *buffer;
 132   GtkTextIter start, end;
 133   char *sel = NULL, *url = NULL;
 134   const char *data;
 135   int width = -1, height = -1;
 136
 137   make_dialog(idlg, win);
 138
 139   buffer = jam_doc_get_text_buffer(doc);
 140   if (gtk_text_buffer_get_selection_bounds(buffer, &start, &end)) {
 141     sel = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
 142     if (is_image_link(sel))
 143       gtk_entry_set_text(GTK_ENTRY(idlg->url), sel);
 144   } else {
 145     char *clip;
 146     clip = jam_clipboard_wait_for_text_timeout(
 147         gtk_clipboard_get(GDK_SELECTION_CLIPBOARD),
 148         50 /* ms */);
 149     if (is_image_link(clip))
 150       gtk_entry_set_text(GTK_ENTRY(idlg->url), clip);
 151     g_free(clip);
 152   }
 153
 154   if (gtk_dialog_run(GTK_DIALOG(idlg->dlg)) == GTK_RESPONSE_OK) {
 155     if (sel)
 156       gtk_text_buffer_delete(buffer, &start, &end);
 157     else
 158       gtk_text_buffer_get_iter_at_mark(buffer, &start,
 159           gtk_text_buffer_get_insert(buffer));
 160
 161     url = g_strdup(gtk_entry_get_text(GTK_ENTRY(idlg->url)));
 162     xml_escape(&url);
 163     gtk_text_buffer_insert(buffer, &start, "<img src='", -1);
 164     gtk_text_buffer_insert(buffer, &start, url, -1);
 165     gtk_text_buffer_insert(buffer, &start, "'", -1);
 166     g_free(url);
 167
 168     data = gtk_entry_get_text(GTK_ENTRY(idlg->width));
 169     width = atoi(data);
 170
 171     data = gtk_entry_get_text(GTK_ENTRY(idlg->height));
 172     height = atoi(data);
 173
 174     if (width > 0) {
 175       char *data = g_strdup_printf(" width='%d'", width);
 176       gtk_text_buffer_insert(buffer, &start, data, -1);
 177       g_free(data);
 178     }
 179     if (height > 0) {
 180       char *data = g_strdup_printf(" height='%d'", height);
 181       gtk_text_buffer_insert(buffer, &start, data, -1);
 182       g_free(data);
 183     }
 184     gtk_text_buffer_insert(buffer, &start, " />", -1);
 185   }
 186
 187   g_free(sel);
 188
 189   gtk_widget_destroy(idlg->dlg);
 190 }