Added image icons in content browser

Hazelnut/src/Panels/ContentBrowserPanel.cpp

@@ -27,6 +27,15 @@ namespace Hazel {
 			}
 		}
 
+		// Make sure cached texture icons exist, if they dont remove them from cache
+		for (auto it = m_ImageIcons.cbegin(), next_it = it; it != m_ImageIcons.cend(); it = next_it)
+		{
+			++next_it;
+
+			if (!std::filesystem::exists((*it).first))
+				m_ImageIcons.erase(it);
+		}
+
 		static float padding = 16.0f;
 		static float thumbnailSize = 128.0f;
 		float cellSize = thumbnailSize + padding;
@@ -44,7 +53,16 @@ namespace Hazel {
 			std::string filenameString = path.filename().string();
 
 			ImGui::PushID(filenameString.c_str());
+
 			Ref<Texture2D> icon = directoryEntry.is_directory() ? m_DirectoryIcon : m_FileIcon;
+			if (path.extension().string() == ".png")
+			{
+				if (m_ImageIcons.find(path.string()) == m_ImageIcons.end())
+					m_ImageIcons[path.string()] = Texture2D::Create(path.string());
+
+				icon = m_ImageIcons[path.string()];
+			}
+
 			ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0, 0, 0, 0));
 			ImGui::ImageButton((ImTextureID)icon->GetRendererID(), { thumbnailSize, thumbnailSize }, { 0, 1 }, { 1, 0 });
 

Hazelnut/src/Panels/ContentBrowserPanel.h

@@ -3,6 +3,7 @@
 #include "Hazel/Renderer/Texture.h"
 
 #include <filesystem>
+#include <unordered_map>
 
 namespace Hazel {
 
@@ -17,6 +18,7 @@ namespace Hazel {
 
 		Ref<Texture2D> m_DirectoryIcon;
 		Ref<Texture2D> m_FileIcon;
+		std::unordered_map<std::string, Ref<Texture2D>> m_ImageIcons;
 	};
 
 }