xbmc/guilib/GUIRenderingControl.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 "GUIRenderingControl.h"
  10
  11 #include "guilib/IRenderingCallback.h"
  12
  13 #include <mutex>
  14 #ifdef TARGET_WINDOWS
  15 #include "rendering/dx/DeviceResources.h"
  16 #endif
  17
  18 #define LABEL_ROW1 10
  19 #define LABEL_ROW2 11
  20 #define LABEL_ROW3 12
  21
  22 CGUIRenderingControl::CGUIRenderingControl(int parentID, int controlID, float posX, float posY, float width, float height)
  23     : CGUIControl(parentID, controlID, posX, posY, width, height)
  24 {
  25   ControlType = GUICONTROL_RENDERADDON;
  26   m_callback = NULL;
  27 }
  28
  29 CGUIRenderingControl::CGUIRenderingControl(const CGUIRenderingControl &from)
  30 : CGUIControl(from)
  31 {
  32   ControlType = GUICONTROL_RENDERADDON;
  33   m_callback = NULL;
  34 }
  35
  36 bool CGUIRenderingControl::InitCallback(IRenderingCallback *callback)
  37 {
  38   if (!callback)
  39     return false;
  40
  41   std::unique_lock<CCriticalSection> lock(m_rendering);
  42   CServiceBroker::GetWinSystem()->GetGfxContext().CaptureStateBlock();
  43   float x = CServiceBroker::GetWinSystem()->GetGfxContext().ScaleFinalXCoord(GetXPosition(), GetYPosition());
  44   float y = CServiceBroker::GetWinSystem()->GetGfxContext().ScaleFinalYCoord(GetXPosition(), GetYPosition());
  45   float w = CServiceBroker::GetWinSystem()->GetGfxContext().ScaleFinalXCoord(GetXPosition() + GetWidth(), GetYPosition() + GetHeight()) - x;
  46   float h = CServiceBroker::GetWinSystem()->GetGfxContext().ScaleFinalYCoord(GetXPosition() + GetWidth(), GetYPosition() + GetHeight()) - y;
  47   if (x < 0) x = 0;
  48   if (y < 0) y = 0;
  49   if (x + w > CServiceBroker::GetWinSystem()->GetGfxContext().GetWidth()) w = CServiceBroker::GetWinSystem()->GetGfxContext().GetWidth() - x;
  50   if (y + h > CServiceBroker::GetWinSystem()->GetGfxContext().GetHeight()) h = CServiceBroker::GetWinSystem()->GetGfxContext().GetHeight() - y;
  51
  52   void *device = NULL;
  53 #if TARGET_WINDOWS
  54   device = DX::DeviceResources::Get()->GetD3DDevice();
  55 #endif
  56   if (callback->Create((int)(x+0.5f), (int)(y+0.5f), (int)(w+0.5f), (int)(h+0.5f), device))
  57     m_callback = callback;
  58   else
  59     return false;
  60
  61   CServiceBroker::GetWinSystem()->GetGfxContext().ApplyStateBlock();
  62   return true;
  63 }
  64
  65 void CGUIRenderingControl::UpdateVisibility(const CGUIListItem *item)
  66 {
  67   // if made invisible, start timer, only free addonptr after
  68   // some period, configurable by window class
  69   CGUIControl::UpdateVisibility(item);
  70   if (!IsVisible() && m_callback)
  71     FreeResources();
  72 }
  73
  74 void CGUIRenderingControl::Process(unsigned int currentTime, CDirtyRegionList &dirtyregions)
  75 {
  76   //! @todo Add processing to the addon so it could mark when actually changing
  77   std::unique_lock<CCriticalSection> lock(m_rendering);
  78   if (m_callback && m_callback->IsDirty())
  79     MarkDirtyRegion();
  80
  81   CGUIControl::Process(currentTime, dirtyregions);
  82 }
  83
  84 void CGUIRenderingControl::Render()
  85 {
  86   std::unique_lock<CCriticalSection> lock(m_rendering);
  87   if (m_callback)
  88   {
  89     // set the viewport - note: We currently don't have any control over how
  90     // the addon renders, so the best we can do is attempt to define
  91     // a viewport??
  92     CServiceBroker::GetWinSystem()->GetGfxContext().SetViewPort(m_posX, m_posY, m_width, m_height);
  93     CServiceBroker::GetWinSystem()->GetGfxContext().CaptureStateBlock();
  94     m_callback->Render();
  95     CServiceBroker::GetWinSystem()->GetGfxContext().ApplyStateBlock();
  96     CServiceBroker::GetWinSystem()->GetGfxContext().RestoreViewPort();
  97   }
  98
  99   CGUIControl::Render();
 100 }
 101
 102 void CGUIRenderingControl::FreeResources(bool immediately)
 103 {
 104   std::unique_lock<CCriticalSection> lock(m_rendering);
 105
 106   if (!m_callback) return;
 107
 108   CServiceBroker::GetWinSystem()->GetGfxContext().CaptureStateBlock(); //! @todo locking
 109   m_callback->Stop();
 110   CServiceBroker::GetWinSystem()->GetGfxContext().ApplyStateBlock();
 111   m_callback = NULL;
 112 }
 113
 114 bool CGUIRenderingControl::CanFocusFromPoint(const CPoint &point) const
 115 { // mouse is allowed to focus this control, but it doesn't actually receive focus
 116   return IsVisible() && HitTest(point);
 117 }