ColorManager is now specific to the Project

OCIO config was set on a per-project basis, but we were using a singleton for
the ColorManager that would break if more than one project was ever open.
Now the ColorManager belongs to the Project and is always accessed through the
Project.

app/project/item/footage/imagestream.cpp

@@ -28,9 +28,12 @@ ImageStream::ImageStream() :
   premultiplied_alpha_(false)
 {
   set_type(kImage);
+}
 
+void ImageStream::FootageSetEvent(Footage *f)
+{
   // For some reason this connection fails if we don't explicitly specify DirectConnection
-  connect(ColorManager::instance(), SIGNAL(ConfigChanged()), this, SLOT(ColorConfigChangedSlot()), Qt::DirectConnection);
+  connect(f->project()->color_manager(), SIGNAL(ConfigChanged()), this, SLOT(ColorConfigChanged()), Qt::DirectConnection);
 }
 
 QString ImageStream::description()
@@ -86,11 +89,13 @@ void ImageStream::set_colorspace(const QString &color)
   emit ColorSpaceChanged();
 }
 
-void ImageStream::ColorConfigChangedSlot()
+void ImageStream::ColorConfigChanged()
 {
+  ColorManager* color_manager = static_cast<ColorManager*>(sender());
+
   // Check if this colorspace is in the new config
   if (!colorspace_.isEmpty()) {
-    QStringList colorspaces = ColorManager::ListAvailableInputColorspaces(OCIO::GetCurrentConfig());
+    QStringList colorspaces = color_manager->ListAvailableInputColorspaces();
     if (!colorspaces.contains(colorspace_)) {
       // Set to empty if not
       colorspace_.clear();
@@ -100,3 +105,11 @@ void ImageStream::ColorConfigChangedSlot()
   // Either way, the color calculation has likely changed so we signal here
   emit ColorSpaceChanged();
 }
+
+void ImageStream::DefaultColorSpaceChanged()
+{
+  // If no colorspace is set, this stream uses the default color space and it's just changed
+  if (colorspace_.isEmpty()) {
+    emit ColorSpaceChanged();
+  }
+}

app/project/item/footage/imagestream.h

@@ -49,6 +49,9 @@ public:
 signals:
   void ColorSpaceChanged();
 
+protected:
+  virtual void FootageSetEvent(Footage*) override;
+
 private:
   int width_;
   int height_;
@@ -56,7 +59,9 @@ private:
   QString colorspace_;
 
 private slots:
-  void ColorConfigChangedSlot();
+  void ColorConfigChanged();
+
+  void DefaultColorSpaceChanged();
 };
 
 using ImageStreamPtr = std::shared_ptr<ImageStream>;

app/project/item/footage/stream.cpp

@@ -58,6 +58,7 @@ Footage *Stream::footage() const
 void Stream::set_footage(Footage *f)
 {
   footage_ = f;
+  FootageSetEvent(footage_);
 }
 
 const rational &Stream::timebase() const

app/project/item/footage/stream.h

@@ -97,6 +97,9 @@ public:
 
   StreamID ToID() const;
 
+protected:
+  virtual void FootageSetEvent(Footage*){}
+
 private:
   Footage* footage_;
 

app/project/project.cpp

@@ -60,3 +60,8 @@ void Project::set_default_input_colorspace(const QString &colorspace)
 {
   default_input_colorspace_ = colorspace;
 }
+
+ColorManager *Project::color_manager()
+{
+  return &color_manager_;
+}

app/project/project.h

@@ -24,6 +24,7 @@
 #include <QObject>
 #include <memory>
 
+#include "render/colormanager.h"
 #include "project/item/folder/folder.h"
 
 /**
@@ -54,6 +55,8 @@ public:
   const QString& default_input_colorspace();
   void set_default_input_colorspace(const QString& colorspace);
 
+  ColorManager* color_manager();
+
 private:
   Folder root_;
 
@@ -61,6 +64,9 @@ private:
 
   QString ocio_config_;
   QString default_input_colorspace_;
+
+  ColorManager color_manager_;
+
 };
 
 using ProjectPtr = std::shared_ptr<Project>;