source/gui/IGUITextOwner.cpp

   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 #include "precompiled.h"
  19
  20 #include "GUI.h"
  21
  22 IGUITextOwner::IGUITextOwner() : m_GeneratedTextsValid(false)
  23 {
  24 }
  25
  26 IGUITextOwner::~IGUITextOwner()
  27 {
  28         for (SGUIText* const& t : m_GeneratedTexts)
  29                 delete t;
  30 }
  31
  32 void IGUITextOwner::AddText(SGUIText* text)
  33 {
  34         m_GeneratedTexts.push_back(text);
  35 }
  36
  37 void IGUITextOwner::HandleMessage(SGUIMessage& Message)
  38 {
  39         switch (Message.type)
  40         {
  41         case GUIM_SETTINGS_UPDATED:
  42                 // Everything that can change the visual appearance.
  43                 //  it is assumed that the text of the object will be dependent on
  44                 //  these. Although that is not certain, but one will have to manually
  45                 //  change it and disregard this function.
  46                 // TODO Gee: (2004-09-07) Make sure this is all options that can affect the text.
  47                 if (Message.value == "size" || Message.value == "z" ||
  48                         Message.value == "absolute" || Message.value == "caption" ||
  49                         Message.value == "font" || Message.value == "textcolor" ||
  50                         Message.value == "buffer_zone")
  51                 {
  52                         m_GeneratedTextsValid = false;
  53                 }
  54                 break;
  55
  56         default:
  57                 break;
  58         }
  59 }
  60
  61 void IGUITextOwner::UpdateCachedSize()
  62 {
  63         // If an ancestor's size changed, this will let us intercept the change and
  64         // update our text positions
  65
  66         IGUIObject::UpdateCachedSize();
  67         m_GeneratedTextsValid = false;
  68 }
  69
  70 void IGUITextOwner::DrawText(size_t index, const CColor& color, const CPos& pos, float z, const CRect& clipping)
  71 {
  72         if (!m_GeneratedTextsValid)
  73         {
  74                 SetupText();
  75                 m_GeneratedTextsValid = true;
  76         }
  77
  78         ENSURE(index < m_GeneratedTexts.size() && "Trying to draw a Text Index within a IGUITextOwner that doesn't exist");
  79
  80         if (GetGUI())
  81                 GetGUI()->DrawText(*m_GeneratedTexts[index], color, pos, z, clipping);
  82 }
  83
  84 void IGUITextOwner::CalculateTextPosition(CRect& ObjSize, CPos& TextPos, SGUIText& Text)
  85 {
  86         EVAlign valign;
  87         GUI<EVAlign>::GetSetting(this, "text_valign", valign);
  88
  89         // The horizontal Alignment is now computed in GenerateText in order to not have to
  90         // loop through all of the TextCall objects again.
  91         TextPos.x = ObjSize.left;
  92
  93         switch (valign)
  94         {
  95         case EVAlign_Top:
  96                 TextPos.y = ObjSize.top;
  97                 break;
  98         case EVAlign_Center:
  99                 // Round to integer pixel values, else the fonts look awful
 100                 TextPos.y = floorf(ObjSize.CenterPoint().y - Text.m_Size.cy/2.f);
 101                 break;
 102         case EVAlign_Bottom:
 103                 TextPos.y = ObjSize.bottom - Text.m_Size.cy;
 104                 break;
 105         default:
 106                 debug_warn(L"Broken EVAlign in CButton::SetupText()");
 107                 break;
 108         }
 109 }
 110
 111 bool IGUITextOwner::MouseOverIcon()
 112 {
 113         return false;
 114 }