source/gui/IGUITextOwner.h

   1 /* Copyright (C) 2015 Wildfire Games.
   2  * This file is part of 0 A.D.
   3  *
   4  * 0 A.D. is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * 0 A.D. is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 /*
  19 GUI Object Base - Text Owner
  20
  21 --Overview--
  22
  23         Interface class that enhance the IGUIObject with
  24          cached CGUIStrings. This class is not at all needed,
  25          and many controls that will use CGUIStrings might
  26          not use this, but does help for regular usage such
  27          as a text-box, a button, a radio button etc.
  28
  29 --More info--
  30
  31         Check GUI.h
  32
  33 */
  34
  35 #ifndef INCLUDED_IGUITEXTOWNER
  36 #define INCLUDED_IGUITEXTOWNER
  37
  38 #include "GUI.h"
  39
  40 /**
  41  * Framework for handling Output text.
  42  *
  43  * @see IGUIObject
  44  */
  45 class IGUITextOwner : virtual public IGUIObject
  46 {
  47 public:
  48         IGUITextOwner();
  49         virtual ~IGUITextOwner();
  50
  51         /**
  52          * Adds a text object.
  53          */
  54         void AddText(SGUIText* text);
  55
  56         /**
  57          * @see IGUIObject#HandleMessage()
  58          */
  59         virtual void HandleMessage(SGUIMessage& Message);
  60
  61         /**
  62          * @see IGUIObject#UpdateCachedSize()
  63          */
  64         virtual void UpdateCachedSize();
  65
  66         /**
  67          * Draws the Text.
  68          *
  69          * @param index Index value of text. Mostly this will be 0
  70          * @param color
  71          * @param pos Position
  72          * @param z Z value
  73          * @param clipping Clipping rectangle, don't even add a parameter
  74          *                to get no clipping.
  75          */
  76         virtual void DrawText(size_t index, const CColor& color, const CPos& pos, float z, const CRect& clipping = CRect());
  77
  78         /**
  79          * Test if mouse position is over an icon
  80          */
  81         virtual bool MouseOverIcon();
  82
  83 protected:
  84
  85         /**
  86          * Setup texts. Functions that sets up all texts when changes have been made.
  87          */
  88         virtual void SetupText() = 0;
  89
  90         /**
  91          * Whether the cached text is currently valid (if not then SetupText will be called by Draw)
  92          */
  93         bool m_GeneratedTextsValid;
  94
  95         /**
  96          * Texts that are generated and ready to be rendered.
  97          */
  98         std::vector<SGUIText*> m_GeneratedTexts;
  99
 100         /**
 101          * Calculate the position for the text, based on the alignment.
 102          */
 103         void CalculateTextPosition(CRect& ObjSize, CPos& TextPos, SGUIText& Text);
 104 };
 105
 106 #endif // INCLUDED_IGUITEXTOWNER