/*! \brief Updates the preview widget.
* \par Function Description
* This function update the preview: if the preview is active and a
* filename has been given, it opens the file and display
* it. Otherwise it display a blank page.
*
* \param [in] preview The preview widget.
*/
static void
preview_update (Preview *preview)
{
GSCHEM_TOPLEVEL *preview_w_current = preview->preview_w_current;
TOPLEVEL *preview_toplevel = preview_w_current->toplevel;
int left, top, right, bottom;
int width, height;
if (preview_toplevel->page_current == NULL) {
return;
}
/* delete old preview, create new page */
/* it would be better to just resets current page - Fix me */
s_page_delete (preview_toplevel, preview_toplevel->page_current);
s_page_goto (preview_toplevel, s_page_new (preview_toplevel, "preview"));
if (preview->active) {
g_assert ((preview->filename == NULL) || (preview->buffer == NULL));
if (preview->filename != NULL) {
/* open up file in current page */
f_open_flags (preview_toplevel, preview_toplevel->page_current,
preview->filename,
F_OPEN_RC | F_OPEN_RESTORE_CWD, NULL);
/* test value returned by f_open... - Fix me */
/* we should display something if there an error occured - Fix me */
}
if (preview->buffer != NULL) {
/* Load the data buffer */
s_page_append_list (preview_toplevel, preview_toplevel->page_current,
o_read_buffer (preview_toplevel,
NULL, preview->buffer, -1,
_("Preview Buffer")));
}
}
if (world_get_object_glist_bounds (preview_toplevel,
s_page_objects (preview_toplevel->page_current),
&left, &top,
&right, &bottom)) {
/* Clamp the canvas size to the extents of the page being previewed */
width = right - left;
height = bottom - top;
preview_toplevel->init_left = left - ((double)width * OVER_ZOOM_FACTOR);
preview_toplevel->init_right = right + ((double)width * OVER_ZOOM_FACTOR);
preview_toplevel->init_top = top - ((double)height * OVER_ZOOM_FACTOR);
preview_toplevel->init_bottom = bottom + ((double)height * OVER_ZOOM_FACTOR);
}
/* display current page (possibly empty) */
a_zoom_extents (preview_w_current,
s_page_objects (preview_toplevel->page_current),
A_PAN_DONT_REDRAW);
o_invalidate_all (preview_w_current);
}
/*! \brief Opens the schematic file.
* \par Function Description
* Opens the schematic file by calling f_open_flags() with the
* F_OPEN_RC and F_OPEN_CHECK_BACKUP flags.
*
* \param [in,out] toplevel The TOPLEVEL object to load the schematic into.
* \param [in] filename A character string containing the file name
* to open.
* \param [in,out] err #GError structure for error reporting, or
* NULL to disable error reporting
*
* \return 0 on failure, 1 on success.
*/
int f_open(TOPLEVEL *toplevel, PAGE *page,
const gchar *filename, GError **err)
{
return f_open_flags (toplevel, page, filename,
F_OPEN_RC | F_OPEN_CHECK_BACKUP, err);
}
/*! \brief Updates the preview widget.
* \par Function Description
* This function updates the preview: if the preview is active and a
* filename has been given, it opens the file and displays
* it. Otherwise it displays a blank page.
*
* \param [in] preview The preview widget.
*/
static void
preview_update (Preview *preview)
{
int left, top, right, bottom;
int width, height;
GError * err = NULL;
GschemPageView *preview_view = GSCHEM_PAGE_VIEW (preview);
g_return_if_fail (preview_view != NULL);
PAGE *preview_page = gschem_page_view_get_page (preview_view);
if (preview_page == NULL) {
return;
}
TOPLEVEL *preview_toplevel = preview_page->toplevel;
/* delete old preview */
s_page_delete_objects (preview_toplevel, preview_page);
if (preview->active) {
g_assert ((preview->filename == NULL) || (preview->buffer == NULL));
if (preview->filename != NULL) {
/* open up file in current page */
f_open_flags (preview_toplevel, preview_page,
preview->filename,
F_OPEN_RC | F_OPEN_RESTORE_CWD, NULL);
/* test value returned by f_open... - Fix me */
/* we should display something if there an error occured - Fix me */
}
if (preview->buffer != NULL) {
/* Load the data buffer */
GList * objects = o_read_buffer (preview_toplevel,
NULL, preview->buffer, -1,
_("Preview Buffer"), &err);
if (err == NULL) {
s_page_append_list (preview_toplevel, preview_page,
objects);
}
else {
s_page_append (preview_toplevel, preview_page,
o_text_new(preview_toplevel, OBJ_TEXT, 2, 100, 100, LOWER_MIDDLE, 0,
err->message, 10, VISIBLE, SHOW_NAME_VALUE));
g_error_free(err);
}
}
}
if (world_get_object_glist_bounds (preview_toplevel,
s_page_objects (preview_page),
&left, &top,
&right, &bottom)) {
/* Clamp the canvas size to the extents of the page being previewed */
width = right - left;
height = bottom - top;
GschemPageGeometry *geometry = gschem_page_view_get_page_geometry (preview_view);
geometry->world_left = left - ((double)width * OVER_ZOOM_FACTOR);
geometry->world_right = right + ((double)width * OVER_ZOOM_FACTOR);
geometry->world_top = top - ((double)height * OVER_ZOOM_FACTOR);
geometry->world_bottom = bottom + ((double)height * OVER_ZOOM_FACTOR);
}
/* display current page (possibly empty) */
gschem_page_view_zoom_extents (preview_view, NULL);
}
