Okay, ich hab da mal was haessliches hingerotzt.
#2
Ich poste mal nicht den gesamten Code, sondern nur die CEGUI-Relevanten Stellen.
Die XML-Datei mit dem GUI-Layout. Die GUI in C++ zu schreiben ist zwar möglich aber meistens nicht Sinnvoll.
<?xml version="1.0" encoding="UTF-8"?>
<GUILayout>
<Window Type="DefaultWindow" Name="root" >
<Property Name="UnifiedAreaRect" Value="{{0,0},{0,0},{1,0},{1,0}}" />
<Window Type="TaharezLook/FrameWindow" Name="fwRechner" >
<Property Name="Text" Value="Toller Taschenrechner 2000" />
<Property Name="TitlebarEnabled" Value="True" />
<Property Name="TitlebarFont" Value="Commonwealth-10" />
<Property Name="UnifiedAreaRect" Value="{{0.5,-100},{0.5,-100},{0.5,100},{0.5,100}}" />
<Window Type="TaharezLook/Editbox" Name="fwRechner/eingabefeld" >
<Property Name="Text" Value="0" />
<Property Name="UnifiedPosition" Value="{{0.04,0},{0.15,0}}" />
<Property Name="UnifiedSize" Value="{{0.92,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/clear" >
<Property Name="Text" Value="C" />
<Property Name="UnifiedPosition" Value="{{0.04,0},{0.30,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/pm" >
<Property Name="Text" Value="+/-" />
<Property Name="UnifiedPosition" Value="{{0.28,0},{0.30,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/division" >
<Property Name="Text" Value="/" />
<Property Name="UnifiedPosition" Value="{{0.52,0},{0.30,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/multiplikation" >
<Property Name="Text" Value="x" />
<Property Name="UnifiedPosition" Value="{{0.76,0},{0.30,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/7" >
<Property Name="Text" Value="7" />
<Property Name="UnifiedPosition" Value="{{0.04,0},{0.44,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/8" >
<Property Name="Text" Value="8" />
<Property Name="UnifiedPosition" Value="{{0.28,0},{0.44,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/9" >
<Property Name="Text" Value="9" />
<Property Name="UnifiedPosition" Value="{{0.52,0},{0.44,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/-" >
<Property Name="Text" Value="-" />
<Property Name="UnifiedPosition" Value="{{0.76,0},{0.44,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/4" >
<Property Name="Text" Value="4" />
<Property Name="UnifiedPosition" Value="{{0.04,0},{0.58,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/5" >
<Property Name="Text" Value="5" />
<Property Name="UnifiedPosition" Value="{{0.28,0},{0.58,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/6" >
<Property Name="Text" Value="6" />
<Property Name="UnifiedPosition" Value="{{0.52,0},{0.58,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/+" >
<Property Name="Text" Value="+" />
<Property Name="UnifiedPosition" Value="{{0.76,0},{0.58,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/1" >
<Property Name="Text" Value="1" />
<Property Name="UnifiedPosition" Value="{{0.04,0},{0.72,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/2" >
<Property Name="Text" Value="2" />
<Property Name="UnifiedPosition" Value="{{0.28,0},{0.72,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/3" >
<Property Name="Text" Value="3" />
<Property Name="UnifiedPosition" Value="{{0.52,0},{0.72,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/=" >
<Property Name="Text" Value="=" />
<Property Name="UnifiedPosition" Value="{{0.76,0},{0.72,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.25,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/0" >
<Property Name="Text" Value="0" />
<Property Name="UnifiedPosition" Value="{{0.04,0},{0.86,0}}" />
<Property Name="UnifiedSize" Value="{{0.44,0},{0.10,0}}" />
</Window>
<Window Type="TaharezLook/Button" Name="fwRechner/." >
<Property Name="Text" Value="." />
<Property Name="UnifiedPosition" Value="{{0.52,0},{0.86,0}}" />
<Property Name="UnifiedSize" Value="{{0.2,0},{0.10,0}}" />
</Window>
</Window>
</Window>
</GUILayout>
Erstellen des CEGUI Renderers und Systems, laden des Skins, zuweisen eines Standard Mouse Cursor Bildes und laden des GUI-Layouts aus der XML-Datei. In *.scheme können font, lookNFeels und imageset festgelegt werden. In imagesets wird die Position von GUI-Elementen ,bzw. Einzelteilen aus denen sich die Elemente zusammensetzen, in einer Bildatei angegeben. In *.looknfeel wird festgelegt, aus welchen Bildern ein bestimmtes GUI-Element besteht und wo sie sich befinden.
mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY, false, 3000, mSceneMgr);
mGUISystem = new CEGUI::System(mGUIRenderer);
CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLookSkin.scheme");
CEGUI::System::getSingleton().setDefaultMouseCursor("TaharezLook", "MouseArrow");
CEGUI::Window* rootWindow = CEGUI::WindowManager::getSingleton().loadWindowLayout("taschenrechner.xml");
CEGUI::System::getSingleton().setGUISheet(rootWindow);
Allen PushButtons wird dieselbe Callback Funktion zugewiesen:
CEGUI::WindowManager::getSingleton().getWindow("fwRechner/eingabefeld")->setText("0");
CEGUI::WindowManager::WindowIterator wi = CEGUI::WindowManager::getSingleton().getIterator();
CEGUI::Window* w;
while(!wi.isAtEnd())
{
w = *wi;
if(w->getType() == "TaharezLook/Button")
{
w->subscribeEvent(CEGUI::PushButton::EventClicked, CEGUI::Event::Subscriber(&TRFrameListener::buttonPressed, this));
}
wi++;
}
Die Callbackfunktion. Kann man einen Taschenrechner schlimmer programmieren? :D
bool TRFrameListener::buttonPressed(const CEGUI::EventArgs& e)
{
//Zeiger zum Eingabefeld
CEGUI::WindowManager* wmgr = CEGUI::WindowManager::getSingletonPtr();
CEGUI::Window* eingabefeld = wmgr->getWindow("fwRechner/eingabefeld");
//Den unbrauchbaren EventArgs Typ in einen Zeiger zum gedrückten Button umwandeln.
const CEGUI::WindowEventArgs* evt = static_cast<const CEGUI::WindowEventArgs*>(&e);
CEGUI::PushButton* but = static_cast<CEGUI::PushButton*>(evt->window);
//Ein paar zuweisungen für Variablen/Werte, die häufig genutzt werden. Kurze, nichtssagende namen ftw.
std::string bn = but->getName().c_str();
std::string bt = but->getText().c_str();
std::string et = eingabefeld->getText().c_str();
if(bt == "0" || bt == "1" || bt == "2" || bt == "3" || bt == "4" || bt == "5" || bt == "6" || bt == "7" || bt == "8" || bt == "9")
{
if(Ogre::StringConverter::parseReal(et) == 0)
eingabefeld->setText("");
eingabefeld->setText(std::string(et.c_str()) + bt);
}
else if(bt == "C")
{
eingabefeld->setText("0");
wert = 0;
operant = "";
}
else if(bt == ".")
{
eingabefeld->setText(std::string(et.c_str()) + bt);
}
else
{
if(operant != "")
{
if(operant == "+")
wert += Ogre::StringConverter::parseReal(et);
if(operant == "-")
wert -= Ogre::StringConverter::parseReal(et);
if(operant == "x")
wert *= Ogre::StringConverter::parseReal(et);
if(operant == "/")
wert /= Ogre::StringConverter::parseReal(et);
eingabefeld->setText(Ogre::StringConverter::toString(static_cast<Ogre::Real>(wert)));
}
else
{
wert = Ogre::StringConverter::parseReal(et);
}
if(bt == "=")
{
operant == "";
}
else
{
if(bt == "+/-")
wert *= -1;
else if(bt == "+")
operant = "+";
else if(bt == "-")
operant = "-";
else if(bt == "x")
operant = "x";
else if(bt == "/")
operant = "/";
eingabefeld->setText("0");
}
}
return true;
}