xbmc/video/dialogs/GUIDialogTeletext.cpp

   1 /*
   2  *  Copyright (C) 2005-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #include "GUIDialogTeletext.h"
  10
  11 #include "ServiceBroker.h"
  12 #include "application/ApplicationComponents.h"
  13 #include "application/ApplicationPlayer.h"
  14 #include "dialogs/GUIDialogKaiToast.h"
  15 #include "guilib/GUIMessage.h"
  16 #include "guilib/GUITexture.h"
  17 #include "guilib/LocalizeStrings.h"
  18 #include "guilib/Texture.h"
  19 #include "settings/Settings.h"
  20 #include "settings/SettingsComponent.h"
  21 #include "utils/ColorUtils.h"
  22 #include "utils/log.h"
  23
  24 static int teletextFadeAmount = 0;
  25
  26 CGUIDialogTeletext::CGUIDialogTeletext()
  27   : CGUIDialog(WINDOW_DIALOG_OSD_TELETEXT, ""), m_pTxtTexture(nullptr)
  28 {
  29   m_renderOrder = RENDER_ORDER_DIALOG_TELETEXT;
  30 }
  31
  32 CGUIDialogTeletext::~CGUIDialogTeletext() = default;
  33
  34 bool CGUIDialogTeletext::OnAction(const CAction& action)
  35 {
  36   if (m_TextDecoder.HandleAction(action))
  37   {
  38     MarkDirtyRegion();
  39     return true;
  40   }
  41
  42   return CGUIDialog::OnAction(action);
  43 }
  44
  45 bool CGUIDialogTeletext::OnBack(int actionID)
  46 {
  47   m_bClose = true;
  48   MarkDirtyRegion();
  49   return true;
  50 }
  51
  52 bool CGUIDialogTeletext::OnMessage(CGUIMessage& message)
  53 {
  54   if (message.GetMessage() == GUI_MSG_WINDOW_INIT)
  55   {
  56     /* Do not open if no teletext is available */
  57     const auto& components = CServiceBroker::GetAppComponents();
  58     const auto appPlayer = components.GetComponent<CApplicationPlayer>();
  59     if (!appPlayer->HasTeletextCache())
  60     {
  61       Close();
  62       CGUIDialogKaiToast::QueueNotification(CGUIDialogKaiToast::Info, g_localizeStrings.Get(23049), "", 1500, false);
  63       return true;
  64     }
  65   }
  66   else if (message.GetMessage() == GUI_MSG_NOTIFY_ALL)
  67   {
  68     if (message.GetParam1() == GUI_MSG_WINDOW_RESIZE)
  69     {
  70       SetCoordinates();
  71     }
  72   }
  73   return CGUIDialog::OnMessage(message);
  74 }
  75
  76 void CGUIDialogTeletext::Process(unsigned int currentTime, CDirtyRegionList &dirtyregions)
  77 {
  78   if (m_TextDecoder.Changed())
  79   {
  80     MarkDirtyRegion();
  81   }
  82   CGUIDialog::Process(currentTime, dirtyregions);
  83   m_renderRegion = m_vertCoords;
  84 }
  85
  86 void CGUIDialogTeletext::Render()
  87 {
  88   if (CServiceBroker::GetWinSystem()->GetGfxContext().GetRenderOrder() ==
  89       RENDER_ORDER_FRONT_TO_BACK)
  90     return;
  91   // Do not render if we have no texture
  92   if (!m_pTxtTexture)
  93   {
  94     CLog::Log(LOGERROR, "CGUITeletextBox::Render called without texture");
  95     return;
  96   }
  97
  98   m_TextDecoder.RenderPage();
  99
 100   if (!m_bClose)
 101   {
 102     if (teletextFadeAmount < 100)
 103     {
 104       teletextFadeAmount = std::min(100, teletextFadeAmount + 5);
 105       MarkDirtyRegion();
 106     }
 107   }
 108   else
 109   {
 110     if (teletextFadeAmount > 0)
 111     {
 112       teletextFadeAmount = std::max(0, teletextFadeAmount - 10);
 113       MarkDirtyRegion();
 114     }
 115
 116     if (teletextFadeAmount == 0)
 117       Close();
 118   }
 119
 120   unsigned char* textureBuffer = (unsigned char*)m_TextDecoder.GetTextureBuffer();
 121   if (!m_bClose && m_TextDecoder.NeedRendering() && textureBuffer)
 122   {
 123     m_pTxtTexture->Update(m_TextDecoder.GetWidth(), m_TextDecoder.GetHeight(), m_TextDecoder.GetWidth()*4, XB_FMT_A8R8G8B8, textureBuffer, false);
 124     m_TextDecoder.RenderingDone();
 125     MarkDirtyRegion();
 126   }
 127
 128   KODI::UTILS::COLOR::Color color =
 129       (static_cast<KODI::UTILS::COLOR::Color>(teletextFadeAmount * 2.55f) & 0xff) << 24 | 0xFFFFFF;
 130   CGUITexture::DrawQuad(m_vertCoords, color, m_pTxtTexture.get(), nullptr, -1.0f);
 131
 132   CGUIDialog::Render();
 133 }
 134
 135 void CGUIDialogTeletext::OnInitWindow()
 136 {
 137   teletextFadeAmount  = 0;
 138   m_bClose            = false;
 139   m_windowLoaded      = true;
 140
 141   SetCoordinates();
 142
 143   if (!m_TextDecoder.InitDecoder())
 144   {
 145     CLog::Log(LOGERROR, "{}: failed to init teletext decoder", __FUNCTION__);
 146     Close();
 147   }
 148
 149   m_pTxtTexture =
 150       CTexture::CreateTexture(m_TextDecoder.GetWidth(), m_TextDecoder.GetHeight(), XB_FMT_A8R8G8B8);
 151   if (!m_pTxtTexture)
 152   {
 153     CLog::Log(LOGERROR, "{}: failed to create texture", __FUNCTION__);
 154     Close();
 155   }
 156
 157   CGUIDialog::OnInitWindow();
 158 }
 159
 160 void CGUIDialogTeletext::OnDeinitWindow(int nextWindowID)
 161 {
 162   m_windowLoaded = false;
 163   m_TextDecoder.EndDecoder();
 164
 165   m_pTxtTexture.reset();
 166
 167   CGUIDialog::OnDeinitWindow(nextWindowID);
 168 }
 169
 170 void CGUIDialogTeletext::SetCoordinates()
 171 {
 172   float left, right, top, bottom;
 173
 174   CServiceBroker::GetWinSystem()->GetGfxContext().SetScalingResolution(m_coordsRes, m_needsScaling);
 175
 176   left = CServiceBroker::GetWinSystem()->GetGfxContext().ScaleFinalXCoord(0, 0);
 177   right = CServiceBroker::GetWinSystem()->GetGfxContext().ScaleFinalXCoord((float)m_coordsRes.iWidth, 0);
 178   top = CServiceBroker::GetWinSystem()->GetGfxContext().ScaleFinalYCoord(0, 0);
 179   bottom = CServiceBroker::GetWinSystem()->GetGfxContext().ScaleFinalYCoord(0, (float)m_coordsRes.iHeight);
 180
 181   if (CServiceBroker::GetSettingsComponent()->GetSettings()->GetBool(CSettings::SETTING_VIDEOPLAYER_TELETEXTSCALE))
 182   {
 183     /* Fixed aspect ratio to 4:3 for teletext */
 184     float width = right - left;
 185     float height = bottom - top;
 186     if (width / 4 > height / 3)
 187     {
 188       left = (width - height * 4 / 3) / 2;
 189       right = width - left;
 190     }
 191     else
 192     {
 193       top = (height - width * 3 / 4) / 2;
 194       bottom = height - top;
 195     }
 196   }
 197
 198   m_vertCoords.SetRect(left,
 199     top,
 200     right,
 201     bottom);
 202
 203   MarkDirtyRegion();
 204 }