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-rw-r--r--src/extension/prefdialog/widget-label.cpp121
1 files changed, 121 insertions, 0 deletions
diff --git a/src/extension/prefdialog/widget-label.cpp b/src/extension/prefdialog/widget-label.cpp
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Description widget for extensions
+ *//*
+ * Authors:
+ * Ted Gould <ted@gould.cx>
+ * Johan Engelen <johan@shouraizou.nl> *
+ * Patrick Storz <eduard.braun2@gmx.de>
+ *
+ * Copyright (C) 2005-2019 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "widget-label.h"
+
+#include <gtkmm/box.h>
+#include <gtkmm/label.h>
+#include <glibmm/markup.h>
+#include <glibmm/regex.h>
+
+#include "xml/node.h"
+#include "extension/extension.h"
+
+namespace Inkscape {
+namespace Extension {
+
+
+WidgetLabel::WidgetLabel(Inkscape::XML::Node *xml, Inkscape::Extension::Extension *ext)
+ : InxWidget(xml, ext)
+{
+ // construct the text content by concatenating all (non-empty) text nodes,
+ // removing all other nodes (e.g. comment nodes) and replacing <extension:br> elements with "<br/>"
+ Inkscape::XML::Node * cur_child = xml->firstChild();
+ while (cur_child != nullptr) {
+ if (cur_child->type() == XML::NodeType::TEXT_NODE && cur_child->content() != nullptr) {
+ _value += cur_child->content();
+ } else if (cur_child->type() == XML::NodeType::ELEMENT_NODE && !g_strcmp0(cur_child->name(), "extension:br")) {
+ _value += "<br/>";
+ }
+ cur_child = cur_child->next();
+ }
+
+ // do replacements in the source string to account for the attribute xml:space="preserve"
+ // (those should match replacements potentially performed by xgettext to allow for proper translation)
+ if (g_strcmp0(xml->attribute("xml:space"), "preserve") == 0) {
+ // xgettext copies the source string verbatim in this case, so no changes needed
+ } else {
+ // remove all whitespace from start/end of string and replace intermediate whitespace with a single space
+ _value = Glib::Regex::create("^\\s+|\\s+$")->replace_literal(_value, 0, "", (Glib::RegexMatchFlags)0);
+ _value = Glib::Regex::create("\\s+")->replace_literal(_value, 0, " ", (Glib::RegexMatchFlags)0);
+ }
+
+ // translate value
+ if (!_value.empty()) {
+ if (_translatable != NO) { // translate unless explicitly marked untranslatable
+ _value = get_translation(_value.c_str());
+ }
+ }
+
+ // finally replace all remaining <br/> with a real newline character
+ _value = Glib::Regex::create("<br/>")->replace_literal(_value, 0, "\n", (Glib::RegexMatchFlags)0);
+
+ // parse appearance
+ if (_appearance) {
+ if (!strcmp(_appearance, "header")) {
+ _mode = HEADER;
+ } else if (!strcmp(_appearance, "url")) {
+ _mode = URL;
+ } else {
+ g_warning("Invalid value ('%s') for appearance of label widget in extension '%s'",
+ _appearance, _extension->get_id());
+ }
+ }
+}
+
+/** \brief Create a label for the description */
+Gtk::Widget *WidgetLabel::get_widget(sigc::signal<void> * /*changeSignal*/)
+{
+ if (_hidden) {
+ return nullptr;
+ }
+
+ Glib::ustring newtext = _value;
+
+ Gtk::Label *label = Gtk::manage(new Gtk::Label());
+ if (_mode == HEADER) {
+ label->set_markup(Glib::ustring("<b>") + Glib::Markup::escape_text(newtext) + Glib::ustring("</b>"));
+ label->set_margin_top(5);
+ label->set_margin_bottom(5);
+ } else if (_mode == URL) {
+ Glib::ustring escaped_url = Glib::Markup::escape_text(newtext);
+ label->set_markup(Glib::ustring::compose("<a href='%1'>%1</a>", escaped_url));
+ } else {
+ label->set_text(newtext);
+ }
+ label->set_line_wrap();
+ label->set_xalign(0);
+
+ // TODO: Ugly "fix" for gtk3 width/height calculation of labels.
+ // - If not applying any limits long labels will make the window grow horizontally until it uses up
+ // most of the available space (i.e. most of the screen area) which is ridiculously wide.
+ // - By using "set_default_size(0,0)" in prefidalog.cpp we tell the window to shrink as much as possible,
+ // however this can result in a much too narrow dialog instead and a lot of unnecessary wrapping.
+ // - Here we set a lower limit of GUI_MAX_LINE_LENGTH characters per line that long texts will always use.
+ // This means texts can not shrink anymore (they can still grow, though) and it's also necessary
+ // to prevent https://bugzilla.gnome.org/show_bug.cgi?id=773572
+ int len = newtext.length();
+ label->set_width_chars(len > GUI_MAX_LINE_LENGTH ? GUI_MAX_LINE_LENGTH : len);
+
+ label->show();
+
+ Gtk::Box *hbox = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL));
+ hbox->pack_start(*label, true, true);
+ hbox->show();
+
+ return hbox;
+}
+
+} /* namespace Extension */
+} /* namespace Inkscape */