Add SVG Thumbnail Provider for Windows Explorer (#5048)

* Add SVG Thumbnail Provider

* Some cleanup

* Small settings changes

* Update PowerToys.sln

Remove Any CPU entries

* Fix project configuration issues

* Fix bad merge

* Update output path for SVG thumbnail provider

* Sync with latest

src/modules/previewpane/powerpreview/powerpreview.cpp

@@ -26,6 +26,20 @@ void PowerPreviewModule::destroy()
         }
     }
 
+    for (auto thumbnailProvider : this->m_thumbnailProviders)
+    {
+        if (thumbnailProvider != NULL)
+        {
+            // Disable all the active thumbnail providers.
+            if (this->m_enabled && thumbnailProvider->GetToggleSettingState())
+            {
+                thumbnailProvider->DisablePreview();
+            }
+
+            delete thumbnailProvider;
+        }
+    }
+
     delete this;
 }
 
@@ -67,6 +81,15 @@ bool PowerPreviewModule::get_config(_Out_ wchar_t* buffer, _Out_ int* buffer_siz
             previewHandler->GetToggleSettingState());
     }
 
+    for (auto thumbnailProvider : this->m_thumbnailProviders)
+    {
+        settings.add_bool_toggle(
+            thumbnailProvider->GetToggleSettingName(),
+            thumbnailProvider->GetToggleSettingDescription(),
+            thumbnailProvider->GetToggleSettingState());
+    }
+
+
     return settings.serialize_to_buffer(buffer, buffer_size);
 }
 
@@ -82,6 +105,11 @@ void PowerPreviewModule::set_config(const wchar_t* config)
             previewHandler->UpdateState(settings, this->m_enabled);
         }
 
+        for (auto thumbnailProvider : this->m_thumbnailProviders)
+        {
+            thumbnailProvider->UpdateState(settings, this->m_enabled);
+        }
+
         settings.save_to_settings_file();
     }
     catch (std::exception const& e)
@@ -106,6 +134,19 @@ void PowerPreviewModule::enable()
         }
     }
 
+    for (auto thumbnailProvider : this->m_thumbnailProviders)
+    {
+        if (thumbnailProvider->GetToggleSettingState())
+        {
+            // Enable all the thumbnail providers with initial state set as true.
+            thumbnailProvider->EnableThumbnailProvider();
+        }
+        else
+        {
+            thumbnailProvider->DisableThumbnailProvider();
+        }
+    }
+
     if (!this->m_enabled)
     {
         Trace::EnabledPowerPreview(true);
@@ -122,6 +163,11 @@ void PowerPreviewModule::disable()
         previewHandler->DisablePreview();
     }
 
+    for (auto thumbnailProvider : this->m_thumbnailProviders)
+    {
+        thumbnailProvider->DisableThumbnailProvider();
+    }
+
     if (this->m_enabled)
     {
         Trace::EnabledPowerPreview(false);
@@ -156,6 +202,12 @@ void PowerPreviewModule::init_settings()
         {
             previewHandler->LoadState(settings);
         }
+
+        for (auto thumbnailProvider : this->m_thumbnailProviders)
+        {
+            thumbnailProvider->LoadState(settings);
+        }
+
     }
     catch (std::exception const& e)
     {