Preview_t *
make_preview (GimpDrawable *drawable)
{
Preview_t *data = g_new(Preview_t, 1);
GtkAdjustment *hadj;
GtkAdjustment *vadj;
GtkWidget *preview;
GtkWidget *window;
GtkWidget *button, *arrow;
GtkWidget *ruler;
GtkWidget *table;
GtkWidget *scrollbar;
gint width, height;
data->drawable = drawable;
data->preview = preview = gimp_preview_area_new ();
g_object_set_data (G_OBJECT (preview), "preview", data);
gtk_widget_set_events(GTK_WIDGET(preview), PREVIEW_MASK);
g_signal_connect_after(preview, "expose-event",
G_CALLBACK(preview_expose), data);
g_signal_connect (preview, "size-allocate",
G_CALLBACK (preview_size_allocate), (gpointer)data);
/* Handle drop of links in preview widget */
gtk_drag_dest_set(preview, GTK_DEST_DEFAULT_ALL, target_table,
2, GDK_ACTION_COPY);
g_signal_connect(preview, "drag-data-received",
G_CALLBACK(handle_drop), NULL);
data->widget_width = data->width =
gimp_drawable_width(drawable->drawable_id);
data->widget_height = data->height =
gimp_drawable_height(drawable->drawable_id);
gtk_widget_set_size_request (preview, data->widget_width,
data->widget_height);
/* The main table */
data->window = table = gtk_table_new(3, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 1);
gtk_table_set_row_spacings (GTK_TABLE (table), 1);
/* Create button with arrow */
button = gtk_button_new();
gtk_widget_set_can_focus (button, FALSE);
gtk_table_attach(GTK_TABLE(table), button, 0, 1, 0, 1, GTK_FILL, GTK_FILL,
0, 0);
gtk_widget_set_events(button,
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
g_signal_connect(button, "button-press-event",
G_CALLBACK(arrow_cb), NULL);
gtk_widget_show(button);
arrow = gtk_arrow_new(GTK_ARROW_RIGHT, GTK_SHADOW_OUT);
gtk_container_add(GTK_CONTAINER(button), arrow);
gtk_widget_show(arrow);
/* Create horizontal ruler */
data->hruler = ruler = gimp_ruler_new (GTK_ORIENTATION_HORIZONTAL);
g_signal_connect_swapped(preview, "motion-notify-event",
G_CALLBACK(GTK_WIDGET_GET_CLASS(ruler)->motion_notify_event),
ruler);
gtk_table_attach(GTK_TABLE(table), ruler, 1, 2, 0, 1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show(ruler);
/* Create vertical ruler */
data->vruler = ruler = gimp_ruler_new (GTK_ORIENTATION_VERTICAL);
g_signal_connect_swapped(preview, "motion-notify-event",
G_CALLBACK(GTK_WIDGET_GET_CLASS(ruler)->motion_notify_event),
ruler);
gtk_table_attach(GTK_TABLE(table), ruler, 0, 1, 1, 2,
GTK_FILL, GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show(ruler);
window = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(window),
GTK_POLICY_NEVER, GTK_POLICY_NEVER);
width = (data->width > 600) ? 600 : data->width;
height = (data->height > 400) ? 400 : data->height;
gtk_widget_set_size_request(window, width, height);
gtk_table_attach(GTK_TABLE(table), window, 1, 2, 1, 2, GTK_FILL, GTK_FILL,
0, 0);
gtk_widget_show(window);
hadj = gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (window));
g_signal_connect (hadj, "changed",
G_CALLBACK (scroll_adj_changed),
data->hruler);
g_signal_connect (hadj, "value-changed",
G_CALLBACK (scroll_adj_changed),
data->hruler);
vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (window));
g_signal_connect (vadj, "changed",
G_CALLBACK (scroll_adj_changed),
data->vruler);
g_signal_connect (vadj, "value-changed",
G_CALLBACK (scroll_adj_changed),
data->vruler);
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW(window), preview);
scrollbar = gtk_scrollbar_new (GTK_ORIENTATION_HORIZONTAL, hadj);
gtk_table_attach(GTK_TABLE(table), scrollbar, 1, 2, 2, 3,
GTK_FILL | GTK_SHRINK, GTK_FILL | GTK_SHRINK, 0, 0);
gtk_widget_show (scrollbar);
scrollbar = gtk_scrollbar_new (GTK_ORIENTATION_VERTICAL, vadj);
gtk_table_attach(GTK_TABLE(table), scrollbar, 2, 3, 1, 2,
GTK_FILL | GTK_SHRINK, GTK_FILL | GTK_SHRINK, 0, 0);
gtk_widget_show (scrollbar);
gtk_widget_show (preview);
gimp_pixel_rgn_init(&data->src_rgn, drawable, 0, 0, data->width,
data->height, FALSE, FALSE);
render_preview(data, &data->src_rgn);
gtk_widget_show(table);
return data;
}
/**
* resolution_calibrate_dialog:
* @resolution_entry: a #GimpSizeEntry to connect the dialog to
* @pixbuf: an optional #GdkPixbuf for the upper left corner
*
* Displays a dialog that allows the user to interactively determine
* her monitor resolution. This dialog runs it's own GTK main loop and
* is connected to a #GimpSizeEntry handling the resolution to be set.
**/
void
resolution_calibrate_dialog (GtkWidget *resolution_entry,
GdkPixbuf *pixbuf)
{
GtkWidget *dialog;
GtkWidget *table;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *ruler;
GtkWidget *label;
GdkScreen *screen;
GdkRectangle rect;
gint monitor;
g_return_if_fail (GIMP_IS_SIZE_ENTRY (resolution_entry));
g_return_if_fail (GTK_WIDGET_REALIZED (resolution_entry));
g_return_if_fail (pixbuf == NULL || GDK_IS_PIXBUF (pixbuf));
/* this dialog can only exist once */
if (calibrate_entry)
return;
dialog = gimp_dialog_new (_("Calibrate Monitor Resolution"),
"gimp-resolution-calibration",
gtk_widget_get_toplevel (resolution_entry),
GTK_DIALOG_DESTROY_WITH_PARENT,
NULL, NULL,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
screen = gtk_widget_get_screen (dialog);
monitor = gdk_screen_get_monitor_at_window (screen,
resolution_entry->window);
gdk_screen_get_monitor_geometry (screen, monitor, &rect);
ruler_width = rect.width - 300 - (rect.width % 100);
ruler_height = rect.height - 300 - (rect.height % 100);
table = gtk_table_new (4, 4, FALSE);
gtk_container_set_border_width (GTK_CONTAINER (table), 12);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), table);
gtk_widget_show (table);
if (pixbuf)
{
GtkWidget *image = gtk_image_new_from_pixbuf (pixbuf);
gtk_table_attach (GTK_TABLE (table), image, 0, 1, 0, 1,
GTK_SHRINK, GTK_SHRINK, 4, 4);
gtk_widget_show (image);
}
ruler = gimp_ruler_new (GTK_ORIENTATION_HORIZONTAL);
gtk_widget_set_size_request (ruler, ruler_width, 32);
gimp_ruler_set_range (GIMP_RULER (ruler), 0, ruler_width, ruler_width);
gtk_table_attach (GTK_TABLE (table), ruler, 1, 3, 0, 1,
GTK_SHRINK, GTK_SHRINK, 0, 0);
gtk_widget_show (ruler);
ruler = gimp_ruler_new (GTK_ORIENTATION_VERTICAL);
gtk_widget_set_size_request (ruler, 32, ruler_height);
gimp_ruler_set_range (GIMP_RULER (ruler), 0, ruler_height, ruler_height);
gtk_table_attach (GTK_TABLE (table), ruler, 0, 1, 1, 3,
GTK_SHRINK, GTK_SHRINK, 0, 0);
gtk_widget_show (ruler);
vbox = gtk_vbox_new (FALSE, 12);
gtk_table_attach (GTK_TABLE (table), vbox, 1, 2, 1, 2,
GTK_SHRINK, GTK_SHRINK, 0, 0);
gtk_widget_show (vbox);
label =
gtk_label_new (_("Measure the rulers and enter their lengths:"));
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_SCALE, PANGO_SCALE_LARGE,
PANGO_ATTR_WEIGHT, PANGO_WEIGHT_BOLD,
-1);
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
calibrate_xres =
gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (resolution_entry), 0);
calibrate_yres =
gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (resolution_entry), 1);
calibrate_entry =
gimp_coordinates_new (GIMP_UNIT_INCH, "%p",
FALSE, FALSE, 10,
GIMP_SIZE_ENTRY_UPDATE_SIZE,
FALSE,
FALSE,
_("_Horizontal:"),
ruler_width,
calibrate_xres,
1, GIMP_MAX_IMAGE_SIZE,
0, 0,
_("_Vertical:"),
ruler_height,
calibrate_yres,
1, GIMP_MAX_IMAGE_SIZE,
0, 0);
gtk_widget_hide (GTK_WIDGET (GIMP_COORDINATES_CHAINBUTTON (calibrate_entry)));
g_signal_connect (dialog, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&calibrate_entry);
gtk_box_pack_end (GTK_BOX (hbox), calibrate_entry, FALSE, FALSE, 0);
gtk_widget_show (calibrate_entry);
gtk_widget_show (dialog);
switch (gimp_dialog_run (GIMP_DIALOG (dialog)))
{
case GTK_RESPONSE_OK:
{
GtkWidget *chain_button;
gdouble x, y;
x = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (calibrate_entry), 0);
y = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (calibrate_entry), 1);
calibrate_xres = (gdouble) ruler_width * calibrate_xres / x;
calibrate_yres = (gdouble) ruler_height * calibrate_yres / y;
chain_button = GIMP_COORDINATES_CHAINBUTTON (resolution_entry);
if (ABS (x - y) > GIMP_MIN_RESOLUTION)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button),
FALSE);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (resolution_entry),
0, calibrate_xres);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (resolution_entry),
1, calibrate_yres);
}
default:
break;
}
gtk_widget_destroy (dialog);
}
