try to improve typing in text boxes for RTL languages

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@8258 178a84e3-b1eb-0310-8ba1-8eac791a3b58

data/gui/enter_player_name_dialog.stkgui

@@ -9,13 +9,15 @@
     
     <textbox id="textfield" width="75%" I18N="In the 'add new player' dialog" align="center"/>
 
-    <spacer height="20" width="20" />
+    <label id="preview" width="75%" align="center" text="" />
+    
+    <spacer height="10" width="20" />
     
     <!-- TODO: ok button? -->
     
     <button id="cancel"    I18N="When configuring input" text="Press ESC to cancel" align="center"/>
 
-    <spacer height="20" width="20" />
+    <spacer height="15" width="20" />
 
 </div>
 

src/guiengine/widgets/text_box_widget.cpp

@@ -19,6 +19,50 @@
 #include "guiengine/modaldialog.hpp"
 #include "guiengine/widgets/text_box_widget.hpp"
 
+#include <CGUIEditBox.h>
+#include "utils/ptr_vector.hpp"
+
+using namespace irr;
+
+class MyCGUIEditBox : public gui::CGUIEditBox
+{
+    PtrVector<GUIEngine::ITextBoxWidgetListener, REF> m_listeners;
+    
+public:
+    
+    MyCGUIEditBox(const wchar_t* text, bool border, gui::IGUIEnvironment* environment,
+                 gui:: IGUIElement* parent, s32 id, const core::rect<s32>& rectangle) :
+        CGUIEditBox(text, border, environment, parent, id, rectangle)
+    {
+    }
+    
+    void addListener(GUIEngine::ITextBoxWidgetListener* listener)
+    {
+        m_listeners.push_back(listener);
+    }
+    
+    void clearListeners()
+    {
+        m_listeners.clearWithoutDeleting();
+    }
+
+    virtual bool OnEvent(const SEvent& event)
+    {
+        bool out = CGUIEditBox::OnEvent(event);
+        
+        if (event.EventType == EET_KEY_INPUT_EVENT && event.KeyInput.PressedDown)
+        {
+            for (int n=0; n<m_listeners.size(); n++)
+            {
+                m_listeners[n].onTextUpdated();
+            }
+        }
+        
+        return out;
+    }
+    
+};
+
 using namespace GUIEngine;
 using namespace irr::core;
 using namespace irr::gui;
@@ -39,8 +83,13 @@ void TextBoxWidget::add()
     // Don't call TextBoxWidget::getText(), which assumes that the irrlicht
     // widget already exists. 
     const stringw& text = Widget::getText();
-    m_element = GUIEngine::getGUIEnv()->addEditBox(text.c_str(), widget_size,
-                                                   true /* border */, m_parent, getNewID());
+    
+    m_element = new MyCGUIEditBox(text.c_str(), true /* border */, GUIEngine::getGUIEnv(),
+                                  (m_parent ? m_parent : GUIEngine::getGUIEnv()->getRootGUIElement()),
+                                  getNewID(), widget_size);
+    
+    //m_element = GUIEngine::getGUIEnv()->addEditBox(text.c_str(), widget_size,
+    //                                               true /* border */, m_parent, getNewID());
     m_id = m_element->getID();
     m_element->setTabOrder(m_id);
     m_element->setTabGroup(false);
@@ -49,6 +98,20 @@ void TextBoxWidget::add()
 
 // -----------------------------------------------------------------------------
 
+void TextBoxWidget::addListener(ITextBoxWidgetListener* listener)
+{
+    ((MyCGUIEditBox*)m_element)->addListener(listener);
+}
+
+// -----------------------------------------------------------------------------
+
+void TextBoxWidget::clearListeners()
+{
+    ((MyCGUIEditBox*)m_element)->clearListeners();
+}
+
+// -----------------------------------------------------------------------------
+
 stringw TextBoxWidget::getText() const
 {
     const IGUIEditBox* textCtrl =  Widget::getIrrlichtElement<IGUIEditBox>();

src/guiengine/widgets/text_box_widget.hpp

@@ -27,6 +27,13 @@
 
 namespace GUIEngine
 {
+    class ITextBoxWidgetListener
+    {
+    public:
+        virtual ~ITextBoxWidgetListener() {}
+        virtual void onTextUpdated() = 0;
+    };
+    
     /** \brief A text field widget. 
       * \ingroup widgets
       */
@@ -53,6 +60,9 @@ namespace GUIEngine
         virtual EventPropagation focused(const int playerID);
         virtual void unfocused(const int playerID);
 
+        void addListener(ITextBoxWidgetListener* listener);
+        void clearListeners();
+        
         irr::core::stringw getText() const;
     };
 }

src/states_screens/dialogs/enter_player_name_dialog.cpp

@@ -41,6 +41,8 @@ EnterPlayerNameDialog::EnterPlayerNameDialog(const float w, const float h) :
     TextBoxWidget* textCtrl = getWidget<TextBoxWidget>("textfield");
     assert(textCtrl != NULL);
     textCtrl->setFocusForPlayer(PLAYER_ID_GAME_MASTER);
+    
+    if (translations->isRTLLanguage()) textCtrl->addListener(this);
 }
 
 // -----------------------------------------------------------------------------
@@ -50,6 +52,17 @@ EnterPlayerNameDialog::~EnterPlayerNameDialog()
     // FIXME: what is this code for?
     TextBoxWidget* textCtrl = getWidget<TextBoxWidget>("textfield");
     textCtrl->getIrrlichtElement()->remove();
+    textCtrl->clearListeners();
+}
+
+// -----------------------------------------------------------------------------
+
+void EnterPlayerNameDialog::onTextUpdated()
+{
+    TextBoxWidget* textCtrl = getWidget<TextBoxWidget>("textfield");
+    LabelWidget* lbl = getWidget<LabelWidget>("preview");
+    
+    lbl->setText( core::stringw(translations->fribidize(textCtrl->getText())), false );
 }
 
 // -----------------------------------------------------------------------------

src/states_screens/dialogs/enter_player_name_dialog.hpp

@@ -20,6 +20,7 @@
 #define HEADER_ENTERPLAYERNAME_DIALOG_HPP
 
 #include "guiengine/modaldialog.hpp"
+#include "guiengine/widgets/text_box_widget.hpp"
 
 namespace GUIEngine
 {
@@ -32,7 +33,7 @@ namespace GUIEngine
  * \brief Dialog that allows the player to enter the name for a new player
  * \ingroup states_screens
  */
-class EnterPlayerNameDialog : public GUIEngine::ModalDialog
+class EnterPlayerNameDialog : public GUIEngine::ModalDialog, public GUIEngine::ITextBoxWidgetListener
 {
     
 public:
@@ -44,6 +45,8 @@ public:
 
     void onEnterPressedInternal();
     GUIEngine::EventPropagation processEvent(const std::string& eventSource);
+    
+    virtual void onTextUpdated();
 };
 
 #endif