Add confirmation menu and make world deletion possible in GUI

1 files changed, 191 insertions, 0 deletions

diff --git a/src/guiConfirmMenu.cpp b/src/guiConfirmMenu.cpp
new file mode 100644
index 000000000..2ca4e1791
--- /dev/null
+++ b/src/guiConfirmMenu.cpp
@@ -0,0 +1,191 @@
+/*
+Minetest-c55
+Copyright (C) 2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 "guiConfirmMenu.h"
+#include "debug.h"
+#include "serialization.h"
+#include <string>
+#include <IGUICheckBox.h>
+#include <IGUIEditBox.h>
+#include <IGUIButton.h>
+#include <IGUIStaticText.h>
+#include <IGUIFont.h>
+
+#include "gettext.h"
+
+enum
+{
+	GUI_ID_YES = 101,
+	GUI_ID_NO,
+};
+
+GUIConfirmMenu::GUIConfirmMenu(gui::IGUIEnvironment* env,
+		gui::IGUIElement* parent, s32 id,
+		IMenuManager *menumgr,
+		ConfirmDest *dest,
+		std::wstring message_text
+):
+	GUIModalMenu(env, parent, id, menumgr),
+	m_dest(dest),
+	m_message_text(message_text)
+{
+}
+
+GUIConfirmMenu::~GUIConfirmMenu()
+{
+	removeChildren();
+	if(m_dest)
+		delete m_dest;
+}
+
+void GUIConfirmMenu::removeChildren()
+{
+	const core::list<gui::IGUIElement*> &children = getChildren();
+	core::list<gui::IGUIElement*> children_copy;
+	for(core::list<gui::IGUIElement*>::ConstIterator
+			i = children.begin(); i != children.end(); i++)
+	{
+		children_copy.push_back(*i);
+	}
+	for(core::list<gui::IGUIElement*>::Iterator
+			i = children_copy.begin();
+			i != children_copy.end(); i++)
+	{
+		(*i)->remove();
+	}
+}
+
+void GUIConfirmMenu::regenerateGui(v2u32 screensize)
+{
+	/*
+		Remove stuff
+	*/
+	removeChildren();
+	
+	/*
+		Calculate new sizes and positions
+	*/
+	core::rect<s32> rect(
+			screensize.X/2 - 580/2,
+			screensize.Y/2 - 300/2,
+			screensize.X/2 + 580/2,
+			screensize.Y/2 + 300/2
+	);
+	
+	DesiredRect = rect;
+	recalculateAbsolutePosition(false);
+
+	v2s32 size = rect.getSize();
+
+	/*
+		Add stuff
+	*/
+	{
+		core::rect<s32> rect(0, 0, 300, 20);
+		rect += v2s32(size.X/2-300/2, size.Y/2-30/2-25);
+		Environment->addStaticText(m_message_text.c_str(),
+			rect, false, true, this, -1);
+	}
+	changeCtype("");
+	int bw = 100;
+	{
+		core::rect<s32> rect(0, 0, bw, 30);
+		rect = rect + v2s32(size.X/2-bw/2-bw/2-5, size.Y/2-30/2+25);
+		Environment->addButton(rect, this, GUI_ID_NO,
+			wgettext("No"));
+	}
+	{
+		core::rect<s32> rect(0, 0, bw, 30);
+		rect = rect + v2s32(size.X/2-bw/2+bw/2+5, size.Y/2-30/2+25);
+		Environment->addButton(rect, this, GUI_ID_YES,
+			wgettext("Yes"));
+	}
+	changeCtype("C");
+}
+
+void GUIConfirmMenu::drawMenu()
+{
+	gui::IGUISkin* skin = Environment->getSkin();
+	if (!skin)
+		return;
+	video::IVideoDriver* driver = Environment->getVideoDriver();
+	
+	video::SColor bgcolor(140,0,0,0);
+	driver->draw2DRectangle(bgcolor, AbsoluteRect, &AbsoluteClippingRect);
+
+	gui::IGUIElement::draw();
+}
+
+void GUIConfirmMenu::acceptInput(bool answer)
+{
+	if(m_dest)
+		m_dest->answer(answer);
+}
+
+bool GUIConfirmMenu::OnEvent(const SEvent& event)
+{
+	if(event.EventType==EET_KEY_INPUT_EVENT)
+	{
+		if(event.KeyInput.Key==KEY_ESCAPE && event.KeyInput.PressedDown)
+		{
+			acceptInput(false);
+			quitMenu();
+			return true;
+		}
+		if(event.KeyInput.Key==KEY_RETURN && event.KeyInput.PressedDown)
+		{
+			acceptInput(true);
+			quitMenu();
+			return true;
+		}
+	}
+	if(event.EventType==EET_GUI_EVENT)
+	{
+		if(event.GUIEvent.EventType==gui::EGET_ELEMENT_FOCUS_LOST
+				&& isVisible())
+		{
+			if(!canTakeFocus(event.GUIEvent.Element))
+			{
+				dstream<<"GUIConfirmMenu: Not allowing focus change."
+						<<std::endl;
+				// Returning true disables focus change
+				return true;
+			}
+		}
+		if(event.GUIEvent.EventType==gui::EGET_BUTTON_CLICKED)
+		{
+			switch(event.GUIEvent.Caller->getID())
+			{
+			case GUI_ID_YES:
+				acceptInput(true);
+				quitMenu();
+				// quitMenu deallocates menu
+				return true;
+			case GUI_ID_NO:
+				acceptInput(false);
+				quitMenu();
+				// quitMenu deallocates menu
+				return true;
+			}
+		}
+	}
+
+	return Parent ? Parent->OnEvent(event) : false;
+}
+