static VALUE
gtkdrag_selection_add_targets(VALUE self, VALUE rbwidget, VALUE rbselection, VALUE rbtargets)
{
GtkWidget *widget = RVAL2WIDGET(rbwidget);
GdkAtom selection = RVAL2ATOM(rbselection);
long n;
GtkTargetEntry *targets = RVAL2GTKTARGETENTRIES(rbtargets, &n);
gtk_selection_add_targets(widget, selection, targets, n);
g_free(targets);
return self;
}
void
drop_widget_init(GtkWidget *widget, drag_data_received_cb callback,
void *user_data)
{
static const GtkTargetEntry targets[] = {
#if GTK_CHECK_VERSION(2,0,0)
{ "UTF8_STRING", 0, 3 },
{ "text/plain;charset=utf-8", 0, 4 },
#endif /* Gtk+ >= 2.0 */
{ "STRING", 0, 1 },
{ "text/plain", 0, 2 },
};
g_return_if_fail(widget);
g_return_if_fail(callback);
gtk_drag_dest_set(widget, GTK_DEST_DEFAULT_ALL, targets,
G_N_ELEMENTS(targets), GDK_ACTION_COPY | GDK_ACTION_MOVE);
#if GTK_CHECK_VERSION(2,0,0)
{
static GtkClipboard *clipboard;
if (!clipboard) {
clipboard = gtk_clipboard_get(GDK_SELECTION_PRIMARY);
}
}
gtk_drag_dest_set_target_list(widget, gtk_target_list_new(targets,
G_N_ELEMENTS(targets)));
#endif /* USE_GTK2 */
#if !GTK_CHECK_VERSION(2,0,0)
gtk_selection_add_targets(widget, GDK_SELECTION_TYPE_STRING,
targets, G_N_ELEMENTS(targets));
#endif /* USE_GTK1 */
gui_signal_connect(GTK_OBJECT(widget), "drag-data-received",
callback, user_data);
}
int
main (int argc, char *argv[])
{
GtkWidget *dialog;
GtkWidget *button;
GtkWidget *table;
GtkWidget *label;
GtkWidget *entry;
GtkWidget *hscrollbar;
GtkWidget *vscrollbar;
GtkWidget *hbox;
static GtkTargetEntry targetlist[] = {
{ "STRING", 0, STRING },
{ "TEXT", 0, TEXT },
{ "COMPOUND_TEXT", 0, COMPOUND_TEXT }
};
static gint ntargets = sizeof(targetlist) / sizeof(targetlist[0]);
gtk_init (&argc, &argv);
init_atoms();
selection_widget = gtk_invisible_new ();
dialog = gtk_dialog_new ();
gtk_widget_set_name (dialog, "Test Input");
gtk_container_set_border_width (GTK_CONTAINER(dialog), 0);
g_signal_connect (dialog, "destroy",
G_CALLBACK (quit), NULL);
table = gtk_table_new (4, 2, FALSE);
gtk_container_set_border_width (GTK_CONTAINER(table), 10);
gtk_table_set_row_spacing (GTK_TABLE (table), 0, 5);
gtk_table_set_row_spacing (GTK_TABLE (table), 1, 2);
gtk_table_set_row_spacing (GTK_TABLE (table), 2, 2);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG(dialog)->vbox),
table, TRUE, TRUE, 0);
gtk_widget_show (table);
selection_button = gtk_toggle_button_new_with_label ("Claim Selection");
gtk_table_attach (GTK_TABLE (table), selection_button, 0, 2, 0, 1,
GTK_EXPAND | GTK_FILL, 0, 0, 0);
gtk_widget_show (selection_button);
g_signal_connect (selection_button, "toggled",
G_CALLBACK (selection_toggled), NULL);
g_signal_connect (selection_widget, "selection_clear_event",
G_CALLBACK (selection_clear), NULL);
g_signal_connect (selection_widget, "selection_received",
G_CALLBACK (selection_received), NULL);
gtk_selection_add_targets (selection_widget, GDK_SELECTION_PRIMARY,
targetlist, ntargets);
g_signal_connect (selection_widget, "selection_get",
G_CALLBACK (selection_get), NULL);
selection_text = gtk_text_new (NULL, NULL);
gtk_table_attach_defaults (GTK_TABLE (table), selection_text, 0, 1, 1, 2);
gtk_widget_show (selection_text);
hscrollbar = gtk_hscrollbar_new (GTK_TEXT (selection_text)->hadj);
gtk_table_attach (GTK_TABLE (table), hscrollbar, 0, 1, 2, 3,
GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (hscrollbar);
vscrollbar = gtk_vscrollbar_new (GTK_TEXT (selection_text)->vadj);
gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 1, 2,
GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (vscrollbar);
hbox = gtk_hbox_new (FALSE, 2);
gtk_table_attach (GTK_TABLE (table), hbox, 0, 2, 3, 4,
GTK_EXPAND | GTK_FILL, 0, 0, 0);
gtk_widget_show (hbox);
label = gtk_label_new ("Target:");
gtk_box_pack_start (GTK_BOX(hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
entry = gtk_entry_new ();
gtk_box_pack_start (GTK_BOX(hbox), entry, TRUE, TRUE, 0);
gtk_widget_show (entry);
/* .. And create some buttons */
button = gtk_button_new_with_label ("Paste");
gtk_box_pack_start (GTK_BOX (GTK_DIALOG(dialog)->action_area),
button, TRUE, TRUE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (paste), entry);
gtk_widget_show (button);
button = gtk_button_new_with_label ("Quit");
gtk_box_pack_start (GTK_BOX (GTK_DIALOG(dialog)->action_area),
button, TRUE, TRUE, 0);
g_signal_connect_swapped (button, "clicked",
G_CALLBACK (gtk_widget_destroy), dialog);
gtk_widget_show (button);
gtk_widget_show (dialog);
gtk_main ();
return 0;
}
GtkWidget *setupLCD(GtkWidget *parent, int rows, int cols, char *font){
int i;
int width;
int wid, hgt;
#ifdef GTK_VER_1_1
static GtkTargetEntry targetlist[] = {
/* Target Flags Info */
{ "STRING", 0, TARGET_STRING },
{ "TEXT", 0, TARGET_TEXT },
{ "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT }
};
static gint ntargets = sizeof(targetlist) / sizeof(targetlist[0]);
#endif
/* store arguments */
lcdWidth = cols;
lcdHeight = rows;
#ifdef USE_PANGO
lcdDA = gtk_drawing_area_new();
pango_layout = gtk_widget_create_pango_layout(lcdDA, NULL);
pango_desc = pango_font_description_from_string(font?font:"Liberation Mono 16");
pango_fontmap = pango_cairo_font_map_get_default();
pango_context = pango_cairo_font_map_create_context( (PangoCairoFontMap *)pango_fontmap );
pango_font = pango_context_load_font(pango_context, pango_desc);
pango_metrics =
pango_context_get_metrics(pango_context, pango_desc, pango_language_get_default());
fontW = (pango_font_metrics_get_approximate_digit_width(pango_metrics))/PANGO_SCALE;
fontH = (pango_font_metrics_get_ascent(pango_metrics) + pango_font_metrics_get_descent(pango_metrics))/PANGO_SCALE;
fontD = pango_font_metrics_get_descent(pango_metrics)/PANGO_SCALE;
gtk_widget_modify_font(lcdDA, pango_desc);
#else
fontW = 0;
fontH = 0;
fontD = 0;
/* get a font for the main window */
if(font != NULL){
if(NULL == (lcdFont = gdk_font_load(font))){
fprintf(stderr, "Unable to load font %s.\n", font);
exit(0);
}
} else if(NULL == (lcdFont = gdk_font_load(FONT1)) &&
NULL == (lcdFont = gdk_font_load(FONT2)) &&
NULL == (lcdFont = gdk_font_load(FONT3)) &&
NULL == (lcdFont = gdk_font_load(FONT4)) &&
NULL == (lcdFont = gdk_font_load(FONT5)) &&
NULL == (lcdFont = gdk_font_load(FONT6))){
fprintf(stderr, "Unable to load a font.\n");
exit(0);
}
/* find max font width */
for(i=0; i<256; i++){
width = gdk_char_width(lcdFont, (gchar)i);
if(width < 50 && width > fontW) fontW = width;
}
/* globals we use all over the place */
fontH = lcdFont->ascent + lcdFont->descent;
fontD = lcdFont->descent;
#endif
if(fontW == 0 || fontH == 0){
fprintf(stderr, "Error: can not determine font dimentions.\n");
exit(0);
}
wid = (2 * BORDER) + (lcdWidth * fontW);
hgt = (2 * BORDER) + (lcdHeight * fontH);
#ifndef USE_PANGO
lcdDA = gtk_drawing_area_new();
#endif
gtk_drawing_area_size(GTK_DRAWING_AREA(lcdDA), wid, hgt);
gtk_box_pack_start(GTK_BOX(parent), lcdDA, TRUE, TRUE, 0);
/* Signals used to handle window ops */
gtk_signal_connect(GTK_OBJECT(lcdDA), "expose_event",
(GtkSignalFunc)lcdExposeCB, NULL);
gtk_signal_connect(GTK_OBJECT(lcdDA),"configure_event",
(GtkSignalFunc)lcdResizeCB, NULL);
/* Event signals (Selection) */
gtk_signal_connect(GTK_OBJECT(lcdDA), "selection_received",
(GtkSignalFunc)lcdPasteCB, NULL);
gtk_signal_connect(GTK_OBJECT(lcdDA), "selection_clear_event",
(GtkSignalFunc)loseSelection, NULL);
/*
gtk_signal_connect(GTK_OBJECT(lcdDA), "selection_request_event",
(GtkSignalFunc)convertSelection, NULL);
*/
#ifdef GTK_VER_1_1
gtk_selection_add_targets(lcdDA,
GDK_SELECTION_PRIMARY, targetlist, ntargets);
gtk_signal_connect(GTK_OBJECT(lcdDA), "selection_get",
(GtkSignalFunc)convertSelection, NULL);
#else
gtk_selection_add_handler(lcdDA, GDK_SELECTION_PRIMARY,
GDK_SELECTION_TYPE_STRING, convertSelection, NULL);
#endif
/* Event signals (Input) */
gtk_signal_connect(GTK_OBJECT(lcdDA), "motion_notify_event",
(GtkSignalFunc)lcdMotionEvnt, NULL);
gtk_signal_connect(GTK_OBJECT(lcdDA), "button_press_event",
(GtkSignalFunc)lcdButtonPressEvnt, NULL);
gtk_signal_connect(GTK_OBJECT(lcdDA), "button_release_event",
(GtkSignalFunc)lcdButtonReleaseEvnt, NULL);
gtk_signal_connect_after(GTK_OBJECT(lcdDA), "key_press_event",
(GtkSignalFunc)lcdKeyPressEvnt, NULL);
gtk_signal_connect_after(GTK_OBJECT(lcdDA), "key_release_event",
(GtkSignalFunc)lcdKeyReleaseEvnt, NULL);
gtk_widget_set_events(lcdDA,
GDK_EXPOSURE_MASK | GDK_LEAVE_NOTIFY_MASK |
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK |
GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
GTK_WIDGET_SET_FLAGS(lcdDA, GTK_CAN_FOCUS);
gtk_widget_show(lcdDA);
gtk_widget_grab_focus(lcdDA);
return lcdDA;
}
