/**
* \return None
* \brief This is a generic function to use the save function of
* a module (including Autodetect)
* \param key Identifier of which module to use
* \param doc The document to be saved
* \param filename The file that the document should be saved to
* \param official (optional) whether to set :output_module and :modified in the
* document; is true for normal save, false for temporary saves
*
* First things first, are we looking at an autodetection? Well if that's the case then the module
* needs to be found, and that is done with a database lookup through the module DB. The foreach
* function is called, with the parameter being a gpointer array. It contains both the filename
* (to find its extension) and where to write the module when it is found.
*
* If there is no autodetection the module database is queried with the key given.
*
* If everything is cool at this point, the module is loaded, and there is possibility for
* preferences. If there is a function, then it is executed to get the dialog to be displayed.
* After it is finished the function continues.
*
* Lastly, the save function is called in the module itself.
*/
void
save(Extension *key, SPDocument *doc, gchar const *filename, bool setextension, bool check_overwrite, bool official,
Inkscape::Extension::FileSaveMethod save_method)
{
Output *omod;
if (key == NULL) {
gpointer parray[2];
parray[0] = (gpointer)filename;
parray[1] = (gpointer)&omod;
omod = NULL;
db.foreach(save_internal, (gpointer)&parray);
/* This is a nasty hack, but it is required to ensure that
autodetect will always save with the Inkscape extensions
if they are available. */
if (omod != NULL && !strcmp(omod->get_id(), SP_MODULE_KEY_OUTPUT_SVG)) {
omod = dynamic_cast<Output *>(db.get(SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE));
}
/* If autodetect fails, save as Inkscape SVG */
if (omod == NULL) {
// omod = dynamic_cast<Output *>(db.get(SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE)); use exception and let user choose
}
} else {
omod = dynamic_cast<Output *>(key);
}
if (!dynamic_cast<Output *>(omod)) {
g_warning("Unable to find output module to handle file: %s\n", filename);
throw Output::no_extension_found();
}
omod->set_state(Extension::STATE_LOADED);
if (!omod->loaded()) {
throw Output::save_failed();
}
if (!omod->prefs()) {
throw Output::save_cancelled();
}
gchar *fileName = NULL;
if (setextension) {
gchar *lowerfile = g_utf8_strdown(filename, -1);
gchar *lowerext = g_utf8_strdown(omod->get_extension(), -1);
if (!g_str_has_suffix(lowerfile, lowerext)) {
fileName = g_strdup_printf("%s%s", filename, omod->get_extension());
}
g_free(lowerfile);
g_free(lowerext);
}
if (fileName == NULL) {
fileName = g_strdup(filename);
}
if (check_overwrite && !sp_ui_overwrite_file(fileName)) {
g_free(fileName);
throw Output::no_overwrite();
}
// test if the file exists and is writable
// the test only checks the file attributes and might pass where ACL does not allow to write
if (Inkscape::IO::file_test(filename, G_FILE_TEST_EXISTS) && !Inkscape::IO::file_is_writable(filename)) {
g_free(fileName);
throw Output::file_read_only();
}
Inkscape::XML::Node *repr = doc->getReprRoot();
// remember attributes in case this is an unofficial save and/or overwrite fails
gchar *saved_uri = g_strdup(doc->getURI());
gchar *saved_output_extension = NULL;
gchar *saved_dataloss = NULL;
bool saved_modified = doc->isModifiedSinceSave();
saved_output_extension = g_strdup(get_file_save_extension(save_method).c_str());
saved_dataloss = g_strdup(repr->attribute("inkscape:dataloss"));
if (official) {
// The document is changing name/uri.
doc->changeUriAndHrefs(fileName);
}
// Update attributes:
{
bool const saved = DocumentUndo::getUndoSensitive(doc);
DocumentUndo::setUndoSensitive(doc, false);
{
// also save the extension for next use
store_file_extension_in_prefs (omod->get_id(), save_method);
// set the "dataloss" attribute if the chosen extension is lossy
repr->setAttribute("inkscape:dataloss", NULL);
if (omod->causes_dataloss()) {
repr->setAttribute("inkscape:dataloss", "true");
}
}
DocumentUndo::setUndoSensitive(doc, saved);
doc->setModifiedSinceSave(false);
}
try {
omod->save(doc, fileName);
}
catch(...) {
// revert attributes in case of official and overwrite
if(check_overwrite && official) {
bool const saved = DocumentUndo::getUndoSensitive(doc);
DocumentUndo::setUndoSensitive(doc, false);
{
store_file_extension_in_prefs (saved_output_extension, save_method);
repr->setAttribute("inkscape:dataloss", saved_dataloss);
}
DocumentUndo::setUndoSensitive(doc, saved);
doc->changeUriAndHrefs(saved_uri);
}
doc->setModifiedSinceSave(saved_modified);
// free used ressources
g_free(saved_output_extension);
g_free(saved_dataloss);
g_free(saved_uri);
g_free(fileName);
throw Inkscape::Extension::Output::save_failed();
}
// If it is an unofficial save, set the modified attributes back to what they were.
if ( !official) {
bool const saved = DocumentUndo::getUndoSensitive(doc);
DocumentUndo::setUndoSensitive(doc, false);
{
store_file_extension_in_prefs (saved_output_extension, save_method);
repr->setAttribute("inkscape:dataloss", saved_dataloss);
}
DocumentUndo::setUndoSensitive(doc, saved);
doc->setModifiedSinceSave(saved_modified);
g_free(saved_output_extension);
g_free(saved_dataloss);
}
g_free(fileName);
return;
}
ExportResult sp_export_png_file(SPDocument *doc, gchar const *filename,
Geom::Rect const &area,
unsigned long width, unsigned long height, double xdpi, double ydpi,
unsigned long bgcolor,
unsigned (*status)(float, void *),
void *data, bool force_overwrite,
GSList *items_only)
{
g_return_val_if_fail(doc != NULL, EXPORT_ERROR);
g_return_val_if_fail(filename != NULL, EXPORT_ERROR);
g_return_val_if_fail(width >= 1, EXPORT_ERROR);
g_return_val_if_fail(height >= 1, EXPORT_ERROR);
g_return_val_if_fail(!area.hasZeroArea(), EXPORT_ERROR);
if (!force_overwrite && !sp_ui_overwrite_file(filename)) {
// aborted overwrite
return EXPORT_ABORTED;
}
doc->ensureUpToDate();
/* Calculate translation by transforming to document coordinates (flipping Y)*/
Geom::Point translation = Geom::Point(-area[Geom::X][0], area[Geom::Y][1] - doc->getHeight().value("px"));
/* This calculation is only valid when assumed that (x0,y0)= area.corner(0) and (x1,y1) = area.corner(2)
* 1) a[0] * x0 + a[2] * y1 + a[4] = 0.0
* 2) a[1] * x0 + a[3] * y1 + a[5] = 0.0
* 3) a[0] * x1 + a[2] * y1 + a[4] = width
* 4) a[1] * x0 + a[3] * y0 + a[5] = height
* 5) a[1] = 0.0;
* 6) a[2] = 0.0;
*
* (1,3) a[0] * x1 - a[0] * x0 = width
* a[0] = width / (x1 - x0)
* (2,4) a[3] * y0 - a[3] * y1 = height
* a[3] = height / (y0 - y1)
* (1) a[4] = -a[0] * x0
* (2) a[5] = -a[3] * y1
*/
Geom::Affine const affine(Geom::Translate(translation)
* Geom::Scale(width / area.width(),
height / area.height()));
//SP_PRINT_MATRIX("SVG2PNG", &affine);
struct SPEBP ebp;
ebp.width = width;
ebp.height = height;
ebp.background = bgcolor;
/* Create new drawing */
Inkscape::Drawing drawing;
drawing.setExact(true); // export with maximum blur rendering quality
unsigned const dkey = SPItem::display_key_new(1);
// Create ArenaItems and set transform
drawing.setRoot(doc->getRoot()->invoke_show(drawing, dkey, SP_ITEM_SHOW_DISPLAY));
drawing.root()->setTransform(affine);
ebp.drawing = &drawing;
// We show all and then hide all items we don't want, instead of showing only requested items,
// because that would not work if the shown item references something in defs
if (items_only) {
hide_other_items_recursively(doc->getRoot(), items_only, dkey);
}
ebp.status = status;
ebp.data = data;
bool write_status = false;;
ebp.sheight = 64;
ebp.px = g_try_new(guchar, 4 * ebp.sheight * width);
if (ebp.px) {
write_status = sp_png_write_rgba_striped(doc, filename, width, height, xdpi, ydpi, sp_export_get_rows, &ebp);
g_free(ebp.px);
}
// Hide items, this releases arenaitem
doc->getRoot()->invoke_hide(dkey);
return write_status ? EXPORT_OK : EXPORT_ERROR;
}
/**
* \return None
* \brief This is a generic function to use the save function of
* a module (including Autodetect)
* \param key Identifier of which module to use
* \param doc The document to be saved
* \param filename The file that the document should be saved to
* \param official (optional) whether to set :output_module and :modified in the
* document; is true for normal save, false for temporary saves
*
* First things first, are we looking at an autodetection? Well if that's the case then the module
* needs to be found, and that is done with a database lookup through the module DB. The foreach
* function is called, with the parameter being a gpointer array. It contains both the filename
* (to find its extension) and where to write the module when it is found.
*
* If there is no autodetection the module database is queried with the key given.
*
* If everything is cool at this point, the module is loaded, and there is possibility for
* preferences. If there is a function, then it is executed to get the dialog to be displayed.
* After it is finished the function continues.
*
* Lastly, the save function is called in the module itself.
*/
void
save(Extension *key, SPDocument *doc, gchar const *filename, bool setextension, bool check_overwrite, bool official)
{
Output *omod;
if (key == NULL) {
gpointer parray[2];
parray[0] = (gpointer)filename;
parray[1] = (gpointer)&omod;
omod = NULL;
db.foreach(save_internal, (gpointer)&parray);
/* This is a nasty hack, but it is required to ensure that
autodetect will always save with the Inkscape extensions
if they are available. */
if (omod != NULL && !strcmp(omod->get_id(), SP_MODULE_KEY_OUTPUT_SVG)) {
omod = dynamic_cast<Output *>(db.get(SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE));
}
/* If autodetect fails, save as Inkscape SVG */
if (omod == NULL) {
omod = dynamic_cast<Output *>(db.get(SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE));
}
} else {
omod = dynamic_cast<Output *>(key);
}
if (!dynamic_cast<Output *>(omod)) {
g_warning("Unable to find output module to handle file: %s\n", filename);
throw Output::no_extension_found();
return;
}
omod->set_state(Extension::STATE_LOADED);
if (!omod->loaded()) {
throw Output::save_failed();
}
if (!omod->prefs()) {
throw Output::save_cancelled();
}
gchar *fileName = NULL;
if (setextension) {
gchar *lowerfile = g_utf8_strdown(filename, -1);
gchar *lowerext = g_utf8_strdown(omod->get_extension(), -1);
if (!g_str_has_suffix(lowerfile, lowerext)) {
fileName = g_strdup_printf("%s%s", filename, omod->get_extension());
}
g_free(lowerfile);
g_free(lowerext);
}
if (fileName == NULL) {
fileName = g_strdup(filename);
}
if (check_overwrite && !sp_ui_overwrite_file(fileName)) {
g_free(fileName);
throw Output::no_overwrite();
}
Inkscape::XML::Node *repr = sp_document_repr_root(doc);
// remember attributes in case this is an unofficial save
bool saved_modified = false;
gchar *saved_output_extension = NULL;
gchar *saved_dataloss = NULL;
gchar *saved_uri = NULL;
if (!official) {
saved_modified = doc->isModifiedSinceSave();
if (repr->attribute("inkscape:output_extension")) {
saved_output_extension = g_strdup(repr->attribute("inkscape:output_extension"));
}
if (repr->attribute("inkscape:dataloss")) {
saved_dataloss = g_strdup(repr->attribute("inkscape:dataloss"));
}
if (doc->uri) {
saved_uri = g_strdup(doc->uri);
}
}
// update attributes:
bool saved = sp_document_get_undo_sensitive(doc);
sp_document_set_undo_sensitive (doc, false);
// save the filename for next use
sp_document_set_uri(doc, fileName);
// also save the extension for next use
repr->setAttribute("inkscape:output_extension", omod->get_id());
// set the "dataloss" attribute if the chosen extension is lossy
repr->setAttribute("inkscape:dataloss", NULL);
if ( omod->causes_dataloss() ) {
repr->setAttribute("inkscape:dataloss", "true");
}
sp_document_set_undo_sensitive (doc, saved);
doc->setModifiedSinceSave(false);
omod->save(doc, fileName);
// if it is an unofficial save, set the modified attributes back to what they were
if ( !official) {
saved = sp_document_get_undo_sensitive(doc);
sp_document_set_undo_sensitive (doc, false);
repr->setAttribute("inkscape:output_extension", saved_output_extension);
repr->setAttribute("inkscape:dataloss", saved_dataloss);
sp_document_set_uri(doc, saved_uri);
sp_document_set_undo_sensitive (doc, saved);
doc->setModifiedSinceSave(saved_modified);
}
if (saved_output_extension) g_free(saved_output_extension);
if (saved_dataloss) g_free(saved_dataloss);
if (saved_uri) g_free(saved_uri);
g_free(fileName);
return;
}
