/*! \brief Updates the display when drawing area is configured.
* \par Function Description
* This is the callback function connected to the configure event of
* the GschemPageView of the main window.
*
* It re-pans each of its pages to keep their contents centered in the
* GschemPageView.
*
* When the window is maximised, the zoom of every page is changed to
* best fit the previously displayed area of the page in the new
* area. Otherwise the current zoom level is left unchanged.
*
* \param [in] widget The GschemPageView which received the signal.
* \param [in] event The event structure of signal configure-event.
* \param [in] unused
* \returns FALSE to propagate the event further.
*/
gboolean
x_event_configure (GschemPageView *page_view,
GdkEventConfigure *event,
gpointer unused)
{
GtkAllocation current_allocation;
GList *iter;
PAGE *p_current = gschem_page_view_get_page (page_view);
if (p_current == NULL) {
/* don't want to call this if the current page isn't setup yet */
return FALSE;
}
g_return_val_if_fail (p_current->toplevel != NULL, FALSE);
gtk_widget_get_allocation (GTK_WIDGET(page_view), ¤t_allocation);
if ((current_allocation.width == page_view->previous_allocation.width) &&
(current_allocation.height == page_view->previous_allocation.height)) {
/* the size of the drawing area has not changed -- nothing to do here */
return FALSE;
}
page_view->previous_allocation = current_allocation;
/* re-pan each page of the TOPLEVEL */
for ( iter = geda_list_get_glist (p_current->toplevel->pages);
iter != NULL;
iter = g_list_next (iter) ) {
gschem_page_view_set_page (page_view, (PAGE *)iter->data);
if (page_view->configured) {
gschem_page_view_pan_mouse (page_view, 0, 0);
} else {
gschem_page_view_zoom_extents (page_view, NULL);
}
}
page_view->configured = TRUE;
gschem_page_view_set_page (page_view, p_current);
return FALSE;
}
/*! \brief Changes the current page.
* \par Function Description
* This function displays the specified page <B>page</B> in the
* window attached to <B>toplevel</B>.
*
* It changes the <B>toplevel</B>'s current page to <B>page</B>,
* draws it and updates the user interface.
*
* <B>page</B> has to be in the list of PAGEs attached to <B>toplevel</B>.
*
* \param [in] w_current The toplevel environment.
* \param [in] page The page to become current page.
*/
void
x_window_set_current_page (GschemToplevel *w_current, PAGE *page)
{
GschemPageView *page_view = gschem_toplevel_get_current_page_view (w_current);
g_return_if_fail (page != NULL);
g_return_if_fail (page_view != NULL);
o_redraw_cleanstates (w_current);
gschem_page_view_set_page (page_view, page);
i_update_menus (w_current);
i_set_filename (w_current, page->page_filename);
x_pagesel_update (w_current);
x_multiattrib_update (w_current);
gschem_page_view_update_scroll_adjustments (page_view);
gschem_page_view_invalidate_all (page_view);
}
/*! \brief Opens a new page from a file.
* \par Function Description
* This function opens the file whose name is <B>filename</B> in a
* new PAGE of <B>toplevel</B>.
*
* If there is no page for <B>filename</B> in <B>toplevel</B>'s list
* of pages, it creates a new PAGE, loads the file in it and returns
* a pointer on the new page. Otherwise it returns a pointer on the
* existing page.
*
* If the filename passed is NULL, this function creates an empty,
* untitled page. The name of the untitled page is build from
* configuration data ('untitled-name') and a counter for uniqueness.
*
* The opened page becomes the current page of <B>toplevel</B>.
*
* \param [in] w_current The toplevel environment.
* \param [in] filename The name of the file to open or NULL for a blank page.
* \returns A pointer on the new page.
*
* \bug This code should check to make sure any untitled filename
* does not conflict with a file on disk.
*/
PAGE*
x_window_open_page (GschemToplevel *w_current, const gchar *filename)
{
TOPLEVEL *toplevel = gschem_toplevel_get_toplevel (w_current);
GschemPageView *page_view = gschem_toplevel_get_current_page_view (w_current);
PAGE *page;
gchar *fn;
g_return_val_if_fail (toplevel != NULL, NULL);
/* Generate untitled filename if none was specified */
if (filename == NULL) {
gchar *cwd, *tmp, *untitled_name;
EdaConfig *cfg;
cwd = g_get_current_dir ();
cfg = eda_config_get_context_for_path (cwd);
untitled_name = eda_config_get_string (cfg, "gschem", "default-filename", NULL);
tmp = g_strdup_printf ("%s_%d.sch",
untitled_name,
++w_current->num_untitled);
fn = g_build_filename (cwd, tmp, NULL);
g_free (untitled_name);
g_free(cwd);
g_free(tmp);
} else {
fn = g_strdup (filename);
}
/* Return existing page if it is already loaded */
page = s_page_search (toplevel, fn);
if ( page != NULL ) {
g_free(fn);
return page;
}
page = s_page_new (toplevel, fn);
s_page_goto (toplevel, page);
gschem_toplevel_page_changed (w_current);
/* Load from file if necessary, otherwise just print a message */
if (filename != NULL) {
GError *err = NULL;
if (!quiet_mode)
s_log_message (_("Loading schematic [%s]\n"), fn);
if (!f_open (toplevel, page, (gchar *) fn, &err)) {
GtkWidget *dialog;
g_warning ("%s\n", err->message);
dialog = gtk_message_dialog_new_with_markup
(GTK_WINDOW (w_current->main_window),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
_("<b>An error occurred while loading the requested file.</b>\n\nLoading from '%s' failed: %s. The gschem log may contain more information."),
fn, err->message);
gtk_window_set_title (GTK_WINDOW (dialog), _("Failed to load file"));
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
g_error_free (err);
} else {
gtk_recent_manager_add_item (recent_manager, g_filename_to_uri(fn, NULL, NULL));
}
} else {
if (!quiet_mode)
s_log_message (_("New file [%s]\n"),
toplevel->page_current->page_filename);
g_run_hook_page (w_current, "%new-page-hook", toplevel->page_current);
}
gschem_page_view_set_page (page_view,
toplevel->page_current);
o_undo_savestate (w_current, toplevel->page_current, UNDO_ALL);
/* This line is generally un-needed, however if some code
* wants to open a page, yet not bring it to the front, it is
* needed needed to add it into the page manager. Otherwise,
* it will get done in x_window_set_current_page(...)
*/
x_pagesel_update (w_current); /* ??? */
g_free (fn);
return page;
}
static void
preview_init (Preview *preview)
{
struct event_reg_t {
gchar *detailed_signal;
GCallback c_handler;
} drawing_area_events[] = {
{ "realize", G_CALLBACK (preview_callback_realize) },
{ "expose_event", G_CALLBACK (x_event_expose) },
{ "button_press_event", G_CALLBACK (preview_callback_button_press) },
{ "configure_event", G_CALLBACK (preview_event_configure) },
{ "scroll_event", G_CALLBACK (preview_event_scroll) },
{ NULL, NULL }
}, *tmp;
GschemToplevel *preview_w_current;
preview_w_current = gschem_toplevel_new ();
gschem_toplevel_set_toplevel (preview_w_current, s_toplevel_new ());
preview_w_current->toplevel->load_newer_backup_func =
x_fileselect_load_backup;
preview_w_current->toplevel->load_newer_backup_data =
preview_w_current;
o_text_set_rendered_bounds_func (preview_w_current->toplevel,
o_text_get_rendered_bounds,
preview_w_current);
i_vars_set (preview_w_current);
/* be sure to turn off scrollbars */
preview_w_current->scrollbars_flag = FALSE;
/* be sure to turn off the grid */
gschem_options_set_grid_mode (preview_w_current->options, GRID_MODE_NONE);
/* preview_w_current windows don't have toolbars */
preview_w_current->handleboxes = FALSE;
preview_w_current->toolbars = FALSE;
preview_w_current->win_width = 160;
preview_w_current->win_height = 120;
preview_w_current->drawing_area = GTK_WIDGET (preview);
preview->preview_w_current = preview_w_current;
g_object_set (GTK_WIDGET (preview),
"width-request", preview_w_current->win_width,
"height-request", preview_w_current->win_height,
NULL);
preview->active = FALSE;
preview->filename = NULL;
preview->buffer = NULL;
PAGE *preview_page = s_page_new (preview->preview_w_current->toplevel, "preview");
gschem_page_view_set_page (GSCHEM_PAGE_VIEW (preview), preview_page);
gtk_widget_set_events (GTK_WIDGET (preview),
GDK_EXPOSURE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_BUTTON_PRESS_MASK);
for (tmp = drawing_area_events; tmp->detailed_signal != NULL; tmp++) {
g_signal_connect (GTK_WIDGET (preview),
tmp->detailed_signal,
tmp->c_handler,
preview_w_current);
}
}
