Added AsyncReqComponent for easy asynchronous, cancelable HTTP requests with a nice loading icon.

CMakeLists.txt

@@ -156,6 +156,7 @@ set(ES_HEADERS
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Window.h
     ${CMAKE_CURRENT_SOURCE_DIR}/src/XMLReader.h
     ${CMAKE_CURRENT_SOURCE_DIR}/src/components/AnimationComponent.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/components/AsyncReqComponent.h
     ${CMAKE_CURRENT_SOURCE_DIR}/src/components/ButtonComponent.h
     ${CMAKE_CURRENT_SOURCE_DIR}/src/components/ComponentListComponent.h
     ${CMAKE_CURRENT_SOURCE_DIR}/src/components/ImageComponent.h
@@ -204,6 +205,7 @@ set(ES_SOURCES
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Window.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/XMLReader.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/components/AnimationComponent.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/components/AsyncReqComponent.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/components/ButtonComponent.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/components/ComponentListComponent.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/components/ImageComponent.cpp

src/components/AsyncReqComponent.cpp

@@ -0,0 +1,44 @@
+#include "AsyncReqComponent.h"
+#include "../Renderer.h"
+
+AsyncReqComponent::AsyncReqComponent(Window* window, std::shared_ptr<HttpReq> req, std::function<void(std::shared_ptr<HttpReq>)> onSuccess, std::function<void()> onCancel) 
+	: GuiComponent(window), 
+	mSuccessFunc(onSuccess), mCancelFunc(onCancel), mTime(0), mRequest(req)
+{
+	
+}
+
+bool AsyncReqComponent::input(InputConfig* config, Input input)
+{
+	if(input.value != 0 && config->isMappedTo("b", input))
+	{
+		if(mCancelFunc)
+			mCancelFunc();
+
+		delete this;
+	}
+
+	return true;
+}
+
+void AsyncReqComponent::update(int deltaTime)
+{
+	if(mRequest->status() != HttpReq::REQ_IN_PROGRESS)
+	{
+		mSuccessFunc(mRequest);
+		delete this;
+		return;
+	}
+
+	mTime += deltaTime;
+}
+
+void AsyncReqComponent::render(const Eigen::Affine3f& parentTrans)
+{
+	Eigen::Affine3f trans = Eigen::Affine3f::Identity();
+	trans = trans.translate(Eigen::Vector3f(Renderer::getScreenWidth() / 2.0f, Renderer::getScreenHeight() / 2.0f, 0));
+	Renderer::setMatrix(trans);
+
+	Eigen::Vector3f point(cos(mTime * 0.01f) * 12, sin(mTime * 0.01f) * 12, 0);
+	Renderer::drawRect((int)point.x(), (int)point.y(), 8, 8, 0x0000FFFF);
+}

src/components/AsyncReqComponent.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include "../GuiComponent.h"
+#include "../HttpReq.h"
+#include <functional>
+
+/* Usage example:
+	std::shared_ptr<HttpReq> httpreq = std::make_shared<HttpReq>("cdn.garcya.us", "/wp-content/uploads/2010/04/TD250.jpg");
+	AsyncReqComponent* req = new AsyncReqComponent(mWindow, httpreq,
+		[] (std::shared_ptr<HttpReq> r)
+	{
+		LOG(LogInfo) << "Request completed";
+		LOG(LogInfo) << "   error, if any: " << r->getErrorMsg();
+	}, [] ()
+	{
+		LOG(LogInfo) << "Request canceled";
+	});
+
+	mWindow->pushGui(req);
+	//we can forget about req, since it will always delete itself
+*/
+
+class AsyncReqComponent : public GuiComponent
+{
+public:
+
+	AsyncReqComponent(Window* window, std::shared_ptr<HttpReq> req, std::function<void(std::shared_ptr<HttpReq>)> onSuccess, std::function<void()> onCancel = NULL);
+
+	bool input(InputConfig* config, Input input) override;
+	void update(int deltaTime) override;
+	void render(const Eigen::Affine3f& parentTrans) override;
+
+private:
+	std::function<void(std::shared_ptr<HttpReq>)> mSuccessFunc;
+	std::function<void()> mCancelFunc;
+
+	unsigned int mTime;
+	std::shared_ptr<HttpReq> mRequest;
+};

src/components/GuiMetaDataEd.cpp

@@ -1,6 +1,7 @@
 #include "GuiMetaDataEd.h"
 #include "../Renderer.h"
 #include "../Log.h"
+#include "AsyncReqComponent.h"
 
 #define MDED_RESERVED_ROWS 3
 
@@ -37,6 +38,7 @@ GuiMetaDataEd::GuiMetaDataEd(Window* window, MetaDataList* md, const std::vector
 		mDeleteButton.setPressedFunc([&] { mDeleteFunc(); delete this; });
 
 	mFetchButton.setText("FETCH", 0x555555FF);
+	mFetchButton.setPressedFunc([&] { fetch(); });
 
 	mSaveButton.setText("SAVE", 0x0000FFFF);
 	mSaveButton.setPressedFunc([&] { save(); delete this; });
@@ -105,3 +107,8 @@ void GuiMetaDataEd::save()
 	if(mSavedCallback)
 		mSavedCallback();
 }
+
+void GuiMetaDataEd::fetch()
+{
+	
+}

src/components/GuiMetaDataEd.h

@@ -18,6 +18,7 @@ public:
 
 private:
 	void save();
+	void fetch();
 
 	void populateList(const std::vector<MetaDataDecl>& mdd);