void
ddisplay_show_all (DDisplay *ddisp)
{
Diagram *dia;
real magnify_x, magnify_y;
int width, height;
Point middle;
g_return_if_fail (ddisp != NULL);
dia = ddisp->diagram;
width = dia_renderer_get_width_pixels (ddisp->renderer);
height = dia_renderer_get_height_pixels (ddisp->renderer);
/* if there is something selected show that instead of all exisiting objects */
if (dia->data->selected) {
GList *list = dia->data->selected;
Rectangle extents = *dia_object_get_enclosing_box ((DiaObject*)list->data);
list = g_list_next(list);
while (list) {
DiaObject *obj = (DiaObject *)list->data;
rectangle_union(&extents, dia_object_get_enclosing_box (obj));
list = g_list_next(list);
}
magnify_x = (real)width / (extents.right - extents.left) / ddisp->zoom_factor;
magnify_y = (real)height / (extents.bottom - extents.top) / ddisp->zoom_factor;
middle.x = extents.left + (extents.right - extents.left) / 2.0;
middle.y = extents.top + (extents.bottom - extents.top) / 2.0;
} else {
magnify_x = (real)width /
(dia->data->extents.right - dia->data->extents.left) / ddisp->zoom_factor;
magnify_y = (real)height /
(dia->data->extents.bottom - dia->data->extents.top) / ddisp->zoom_factor;
middle.x = dia->data->extents.left +
(dia->data->extents.right - dia->data->extents.left) / 2.0;
middle.y = dia->data->extents.top +
(dia->data->extents.bottom - dia->data->extents.top) / 2.0;
}
ddisplay_zoom (ddisp, &middle,
((magnify_x<magnify_y)?magnify_x:magnify_y)/1.05);
ddisplay_update_scrollbars(ddisp);
ddisplay_add_update_all(ddisp);
ddisplay_flush(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;
}
void
object_add_updates(DiaObject *obj, Diagram *dia)
{
int i;
/* Bounding box */
if (data_object_get_highlight(dia->data,obj) != DIA_HIGHLIGHT_NONE) {
diagram_add_update_with_border(dia, dia_object_get_enclosing_box (obj), 5);
} else {
diagram_add_update(dia, dia_object_get_enclosing_box (obj));
}
/* Handles */
for (i=0; i<obj->num_handles; i++) {
handle_add_update(obj->handles[i], dia);
}
/* Connection points */
for (i=0; i<dia_object_get_num_connections(obj); ++i) {
connectionpoint_add_update(obj->connections[i], dia);
}
}
