/* This is called when ddisp->shell is destroyed... */
void
ddisplay_really_destroy(DDisplay *ddisp)
{
if (active_display == ddisp)
display_set_active(NULL);
/* last chance to avoid crashing in the idle update */
if (ddisp->update_id) {
g_source_remove (ddisp->update_id);
ddisp->update_id = 0;
}
if (ddisp->diagram) {
diagram_remove_ddisplay(ddisp->diagram, ddisp);
/* if we are the last user of the diagram it will be unref'ed */
g_object_unref(ddisp->diagram);
ddisp->diagram = NULL;
}
g_object_unref (ddisp->renderer);
ddisp->renderer = NULL;
/* Free update_areas list: */
ddisplay_free_update_areas(ddisp);
/* Free display_areas list */
ddisplay_free_display_areas(ddisp);
g_free(ddisp);
}
/** Ensure the object is visible but minimize scrolling
*/
gboolean
ddisplay_present_object(DDisplay *ddisp, DiaObject *obj)
{
const Rectangle *r = dia_object_get_enclosing_box(obj);
const Rectangle *v = &ddisp->visible;
display_set_active(ddisp);
if (!rectangle_in_rectangle(v, r)) {
Point delta = { 0, 0 };
if ((r->right - r->left) > (v->right - v->left)) /* object bigger than visible area */
delta.x = (r->left - v->left + r->right - v->right) / 2;
else if (r->left < v->left)
delta.x = r->left - v->left;
else if (r->right > v->right)
delta.x = r->right - v->right;
if ((r->bottom - r->top) > (v->bottom - v->top)) /* object bigger than visible area */
delta.y = (r->top - v->top + r->bottom - v->bottom) / 2;
else if (r->top < v->top)
delta.y = r->top - v->top;
else if (r->bottom > v->bottom)
delta.y = r->bottom - v->bottom;
ddisplay_scroll(ddisp, &delta);
return TRUE;
}
return FALSE;
}
/** Scroll display so that obj is centered.
* Returns TRUE if anything changed. */
gboolean
ddisplay_scroll_to_object(DDisplay *ddisp, DiaObject *obj)
{
Rectangle r = obj->bounding_box;
Point p;
p.x = (r.left+r.right)/2;
p.y = (r.top+r.bottom)/2;
display_set_active(ddisp);
return ddisplay_scroll_center_point(ddisp, &p);
}
static gint
origin_button_press(GtkWidget *widget, GdkEventButton *event, gpointer data)
{
DDisplay *ddisp = (DDisplay *)data;
display_set_active(ddisp);
ddisplay_popup_menu(ddisp, event);
/* stop the signal emission so the button doesn't grab the
* pointer from us */
g_signal_stop_emission_by_name (G_OBJECT(widget), "button_press_event");
return FALSE;
}
Diagram *
diagram_load(const char *filename, DiaImportFilter *ifilter)
{
Diagram *diagram = NULL;
GList *diagrams;
gboolean was_default = FALSE;
for (diagrams = open_diagrams; diagrams != NULL; diagrams = g_list_next(diagrams)) {
Diagram *old_diagram = (Diagram*)diagrams->data;
if (old_diagram->is_default) {
diagram = old_diagram;
was_default = TRUE;
break;
}
}
/* TODO: Make diagram not be initialized twice */
if (diagram == NULL) {
diagram = new_diagram(filename);
}
if (diagram == NULL) return NULL;
if ( !diagram_init(diagram, filename)
|| !diagram_load_into (diagram, filename, ifilter)) {
if (!was_default) /* don't kill the default diagram on import failure */
diagram_destroy(diagram);
diagram = NULL;
} else {
/* not modifying 'diagram->unsaved' the state depends on the import filter used */
diagram_set_modified(diagram, FALSE);
if (app_is_interactive()) {
recent_file_history_add(filename);
if (was_default) /* replacing it is like first remove than add */
dia_diagram_remove(diagram);
dia_diagram_add(diagram);
}
}
if (diagram != NULL && was_default && app_is_interactive()) {
diagram_update_for_filename(diagram);
diagram->is_default = FALSE;
if ( g_slist_length(diagram->displays) == 1 )
display_set_active (diagram->displays->data);
}
return diagram;
}
/*!
* Called when the widget's window "size, position or stacking"
* changes. Needs GDK_STRUCTURE_MASK set.
*/
static gboolean
canvas_configure_event (GtkWidget *widget,
GdkEventConfigure *cevent,
DDisplay *ddisp)
{
gboolean new_size = FALSE;
int width, height;
g_return_val_if_fail (widget == ddisp->canvas, FALSE);
if (ddisp->renderer) {
width = dia_renderer_get_width_pixels (ddisp->renderer);
height = dia_renderer_get_height_pixels (ddisp->renderer);
} else {
/* We can continue even without a renderer here because
* ddisplay_resize_canvas () does the setup for us.
*/
width = height = 0;
}
/* Only do this when size is really changing */
if (width != cevent->width || height != cevent->height) {
g_print ("Canvas size change...\n");
ddisplay_resize_canvas (ddisp, cevent->width, cevent->height);
ddisplay_update_scrollbars(ddisp);
/* on resize stop further propagation - does not help */
new_size = TRUE;
}
/* If the UI is not integrated, resizing should set the resized
* window as active. With integrated UI, there is only one window.
*/
if (is_integrated_ui () == 0)
display_set_active(ddisp);
/* continue propagation with FALSE */
return new_size;
}