Add snapshot feature and fix settings window

The GUI now has a snapshot feature. The record button opens a popup
window, which contains the different recording options.

The cog icon now opens a scrollable list of all of the registered
configurations, both local and remote. This window is created
dynamically each time the cog icon is clicked, so it now includes all of the
configurations that were available as the window was created.

applications/gui/src/camera.cpp

@@ -493,6 +493,16 @@ const GLTexture &ftl::gui::Camera::captureFrame() {
 	return texture1_;
 }
 
+void ftl::gui::Camera::snapshot() {
+	UNIQUE_LOCK(mutex_, lk);
+	char timestamp[18];
+	std::time_t t = std::time(NULL);
+	std::strftime(timestamp, sizeof(timestamp), "%F-%H%M%S", std::localtime(&t));
+	cv::Mat image;
+	cv::flip(im1_, image, 0);
+	cv::imwrite(std::string(timestamp) + ".png", image);
+}
+
 nlohmann::json ftl::gui::Camera::getMetaData() {
 	return nlohmann::json();
 }

applications/gui/src/camera.hpp

@@ -51,6 +51,8 @@ class Camera {
 
 	bool thumbnail(cv::Mat &thumb);
 
+	void snapshot();
+
 	nlohmann::json getMetaData();
 
 	StatisticsImage *stats_ = nullptr;

applications/gui/src/config_window.cpp

@@ -6,6 +6,7 @@
 #include <nanogui/button.h>
 #include <nanogui/entypo.h>
 #include <nanogui/formhelper.h>
+#include <nanogui/vscrollpanel.h>
 
 #include <vector>
 #include <string>
@@ -27,8 +28,13 @@ ConfigWindow::ConfigWindow(nanogui::Widget *parent, ftl::ctrl::Master *ctrl)
 
 	new Label(this, "Select Configurable","sans-bold");
 
+	auto vscroll = new VScrollPanel(this);
+	vscroll->setFixedHeight(300);
+	Widget *buttons = new Widget(vscroll);
+	buttons->setLayout(new BoxLayout(Orientation::Vertical, Alignment::Fill));
+
 	for (auto c : configurables_) {
-		auto itembutton = new Button(this, c);
+		auto itembutton = new Button(buttons, c);
 		itembutton->setCallback([this,c]() {
 			LOG(INFO) << "Change configurable: " << c;
 			_buildForm(c);

applications/gui/src/media_panel.cpp

@@ -34,9 +34,22 @@ MediaPanel::MediaPanel(ftl::gui::Screen *screen) : nanogui::Window(screen, ""),
 		if (cam) cam->showPoseWindow();
 	});
 
-	button = new Button(this, "", ENTYPO_ICON_CONTROLLER_RECORD);
-	button->setFlags(Button::ToggleButton);
-	button->setChangeCallback([this,button](bool state) {
+	auto recordbutton = new PopupButton(this, "", ENTYPO_ICON_CONTROLLER_RECORD);
+	recordbutton->setTooltip("Record");
+	recordbutton->setSide(Popup::Side::Right);
+	recordbutton->setChevronIcon(0);
+	auto recordpopup = recordbutton->popup();
+	recordpopup->setLayout(new GroupLayout());
+	recordpopup->setTheme(screen->toolbuttheme);
+	recordpopup->setAnchorHeight(150);
+	auto itembutton = new Button(recordpopup, "Snapshot");
+	itembutton->setCallback([this](){
+		screen_->activeCamera()->snapshot();
+	});
+	itembutton = new Button(recordpopup, "2D video recording");
+	itembutton = new Button(recordpopup, "Depth video recording");
+	itembutton->setFlags(Button::ToggleButton);
+	itembutton->setChangeCallback([this,recordbutton](bool state) {
 		auto tag = screen_->activeCamera()->source()->get<std::string>("uri");
 		if (tag) {
 			auto tagvalue = tag.value();
@@ -45,14 +58,16 @@ MediaPanel::MediaPanel(ftl::gui::Screen *screen) : nanogui::Window(screen, ""),
 				ftl::Configurable *configurable = configurables[0];
 				if (state){
 					configurable->set("record", true);
-					button->setTextColor(nanogui::Color(1.0f,0.1f,0.1f,1.0f));
+					recordbutton->setTextColor(nanogui::Color(1.0f,0.1f,0.1f,1.0f));
 				} else {
-					button->setTextColor(nanogui::Color(1.0f,1.0f,1.0f,1.0f));
+					recordbutton->setTextColor(nanogui::Color(1.0f,1.0f,1.0f,1.0f));
 					configurable->set("record", false);
 				}
 			}
 		}
 	});
+	itembutton = new Button(recordpopup, "3D scene recording");
+	itembutton = new Button(recordpopup, "Detailed recording options");
 
 	button = new Button(this, "", ENTYPO_ICON_CONTROLLER_STOP);
 	button->setCallback([this]() {

applications/gui/src/screen.cpp

@@ -213,18 +213,18 @@ ftl::gui::Screen::Screen(ftl::Configurable *proot, ftl::net::Universe *pnet, ftl
 		popup->setVisible(false);
 	});
 
-	popbutton = new PopupButton(innertool, "", ENTYPO_ICON_COG);
-	popbutton->setIconExtraScale(1.5f);
-	popbutton->setTheme(toolbuttheme);
-	popbutton->setTooltip("Settings");
-	popbutton->setFixedSize(Vector2i(40,40));
-	popbutton->setSide(Popup::Side::Right);
-	popbutton->setChevronIcon(0);
-	// popbutton->setPosition(Vector2i(5,height()-50));
-	popup = popbutton->popup();
-	popup->setLayout(new GroupLayout());
-	popup->setTheme(toolbuttheme);
+	itembutton = new Button(innertool, "", ENTYPO_ICON_COG);
+	itembutton->setIconExtraScale(1.5f);
+	itembutton->setTheme(toolbuttheme);
+	itembutton->setTooltip("Settings");
+	itembutton->setFixedSize(Vector2i(40,40));
+
+	itembutton->setCallback([this]() {
+		auto config_window = new ConfigWindow(this, ctrl_);
+		config_window->setTheme(windowtheme);
+	});
 
+	/*
 	//net_->onConnect([this,popup](ftl::net::Peer *p) {
 	{
 		LOG(INFO) << "NET CONNECT";
@@ -247,6 +247,7 @@ ftl::gui::Screen::Screen(ftl::Configurable *proot, ftl::net::Universe *pnet, ftl
 		auto config_window = new ConfigWindow(this, ctrl_);
 		config_window->setTheme(windowtheme);
 	});
+	*/
 
 	//configwindow_ = new ConfigWindow(parent, ctrl_);
 	cwindow_ = new ftl::gui::ControlWindow(this, controller);