refacto: factorize multiple code parts from guiEditbox childs (#10782)

src/gui/guiEditBox.cpp

@@ -0,0 +1,95 @@
+/*
+Minetest
+Copyright (C) 2021 Minetest
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "guiEditBox.h"
+
+#include "IGUISkin.h"
+#include "IGUIEnvironment.h"
+#include "IGUIFont.h"
+
+GUIEditBox::~GUIEditBox()
+{
+	if (m_override_font)
+		m_override_font->drop();
+}
+
+void GUIEditBox::setOverrideFont(IGUIFont *font)
+{
+	if (m_override_font == font)
+		return;
+
+	if (m_override_font)
+		m_override_font->drop();
+
+	m_override_font = font;
+
+	if (m_override_font)
+		m_override_font->grab();
+
+	breakText();
+}
+
+//! Get the font which is used right now for drawing
+IGUIFont *GUIEditBox::getActiveFont() const
+{
+	if (m_override_font)
+		return m_override_font;
+	IGUISkin *skin = Environment->getSkin();
+	if (skin)
+		return skin->getFont();
+	return 0;
+}
+
+//! Sets another color for the text.
+void GUIEditBox::setOverrideColor(video::SColor color)
+{
+	m_override_color = color;
+	m_override_color_enabled = true;
+}
+
+video::SColor GUIEditBox::getOverrideColor() const
+{
+	return m_override_color;
+}
+
+//! Sets if the text should use the overide color or the color in the gui skin.
+void GUIEditBox::enableOverrideColor(bool enable)
+{
+	m_override_color_enabled = enable;
+}
+
+//! Enables or disables word wrap
+void GUIEditBox::setWordWrap(bool enable)
+{
+	m_word_wrap = enable;
+	breakText();
+}
+
+//! Enables or disables newlines.
+void GUIEditBox::setMultiLine(bool enable)
+{
+	m_multiline = enable;
+}
+
+//! Enables or disables automatic scrolling with cursor position
+//! \param enable: If set to true, the text will move around with the cursor position
+void GUIEditBox::setAutoScroll(bool enable)
+{
+	m_autoscroll = enable;
+}