Resolves #343 GUI and Frame Refactor

Major rewrite of the GUI into a module and view form, also using a new Feed class. The frame and frameset data structures have also been rewritten to support memory pooling and response frames.

applications/gui2/src/views/addsource.cpp

+#include "addsource.hpp"
+#include "../modules/addsource.hpp"
+
+#include "../widgets/combobox.hpp"
+
+#include <nanogui/layout.h>
+#include <nanogui/label.h>
+#include <nanogui/button.h>
+#include <nanogui/vscrollpanel.h>
+#include <nanogui/tabwidget.h>
+#include <nanogui/formhelper.h>
+
+#include <loguru.hpp>
+
+
+using ftl::gui2::AddSourceWindow;
+
+AddSourceWindow::AddSourceWindow(nanogui::Widget* parent, AddCtrl *ctrl) :
+		nanogui::Window(parent, ""), ctrl_(ctrl) {
+
+	using namespace nanogui;
+
+	auto t = dynamic_cast<ftl::gui2::Screen*>(screen())->getTheme("window_dark");
+	setTheme(t);
+
+	//setFixedWidth(500);
+	setFixedSize(Vector2i(500,300));
+	setLayout(new nanogui::BoxLayout
+				(nanogui::Orientation::Vertical, nanogui::Alignment::Fill, 20, 10));
+
+	setPosition(Vector2i(parent->width()/2.0f - fixedWidth()/2.0f, parent->height()/2.0f - fixedHeight()/2.0f));
+
+	auto close = new nanogui::Button(buttonPanel(), "", ENTYPO_ICON_CROSS);
+	close->setTheme(dynamic_cast<ftl::gui2::Screen*>(screen())->getTheme("window_dark"));
+	close->setBackgroundColor(theme()->mWindowHeaderGradientBot);
+	close->setCallback([this](){ this->close();});
+
+	auto *title = new Label(this, "Add Source", "sans-bold");
+	title->setFontSize(28);
+
+	tabs_ = new TabWidget(this);
+
+	auto *recent_tab = tabs_->createTab("Recent");
+	recent_tab->setLayout(new nanogui::BoxLayout
+				(nanogui::Orientation::Vertical, nanogui::Alignment::Fill, 0, 0));
+	VScrollPanel *vscroll = new VScrollPanel(recent_tab);
+	vscroll->setFixedHeight(200);
+	Widget *recentscroll = new Widget(vscroll);
+	recentscroll->setLayout(new BoxLayout(Orientation::Vertical, Alignment::Fill, 10, 4));
+
+	auto *group_tab = tabs_->createTab("Groups");
+	group_tab->setLayout(new nanogui::BoxLayout
+				(nanogui::Orientation::Vertical, nanogui::Alignment::Fill, 0, 0));
+	vscroll = new VScrollPanel(group_tab);
+	vscroll->setFixedHeight(200);
+	Widget *groupscroll = new Widget(vscroll);
+	groupscroll->setLayout(new BoxLayout(Orientation::Vertical, Alignment::Fill, 10, 4));
+
+	auto *dev_tab = tabs_->createTab("Devices");
+	dev_tab->setLayout(new nanogui::BoxLayout
+				(nanogui::Orientation::Vertical, nanogui::Alignment::Fill, 0, 0));
+	vscroll = new VScrollPanel(dev_tab);
+	vscroll->setFixedHeight(200);
+	Widget *devscroll = new Widget(vscroll);
+	devscroll->setLayout(new BoxLayout(Orientation::Vertical, Alignment::Fill, 10, 4));
+
+	auto *host_tab = tabs_->createTab("Hosts");
+	host_tab->setLayout(new nanogui::BoxLayout
+				(nanogui::Orientation::Vertical, nanogui::Alignment::Fill, 0, 0));
+	vscroll = new VScrollPanel(host_tab);
+	vscroll->setFixedHeight(200);
+	Widget *hostscroll = new Widget(vscroll);
+	hostscroll->setLayout(new BoxLayout(Orientation::Vertical, Alignment::Fill, 10, 4));
+
+	auto *stream_tab = tabs_->createTab("Streams");
+	stream_tab->setLayout(new nanogui::BoxLayout
+				(nanogui::Orientation::Vertical, nanogui::Alignment::Fill, 0, 0));
+	vscroll = new VScrollPanel(stream_tab);
+	vscroll->setFixedHeight(200);
+	Widget *streamscroll = new Widget(vscroll);
+	streamscroll->setLayout(new BoxLayout(Orientation::Vertical, Alignment::Fill, 10, 4));
+
+	auto *file_tab = tabs_->createTab("Files");
+	file_tab->setLayout(new nanogui::BoxLayout
+				(nanogui::Orientation::Vertical, nanogui::Alignment::Fill, 0, 0));
+	vscroll = new VScrollPanel(file_tab);
+	vscroll->setFixedHeight(200);
+	Widget *filescroll = new Widget(vscroll);
+	filescroll->setLayout(new BoxLayout(Orientation::Vertical, Alignment::Fill, 10, 4));
+
+	tab_items_.resize(6);
+	tab_items_[0] = recentscroll;
+	tab_items_[1] = groupscroll;
+	tab_items_[2] = devscroll;
+	tab_items_[3] = hostscroll;
+	tab_items_[4] = streamscroll;
+	tab_items_[5] = filescroll;
+
+	uptodate_.test_and_set();
+	rebuild();
+	tabs_->setActiveTab(0);
+
+	new_source_handle_ = ctrl_->feed()->onNewSources([this](const std::vector<std::string> &srcs) {
+		UNIQUE_LOCK(mutex_, lk);
+		uptodate_.clear();
+		return true;
+	});
+}
+
+AddSourceWindow::~AddSourceWindow() {
+
+}
+
+nanogui::Button *AddSourceWindow::_addButton(const std::string &s, nanogui::Widget *parent, bool hide) {
+	using namespace nanogui;
+
+	ftl::URI uri(s);
+	int icon = 0;
+	switch (uri.getScheme()) {
+	case ftl::URI::SCHEME_DEVICE		: icon = ENTYPO_ICON_CAMERA; break;
+	case ftl::URI::SCHEME_FILE			: icon = ENTYPO_ICON_FOLDER_VIDEO; break;
+	case ftl::URI::SCHEME_FTL			: icon = ENTYPO_ICON_CLOUD; break;
+	case ftl::URI::SCHEME_WS			:
+	case ftl::URI::SCHEME_TCP			: icon = ENTYPO_ICON_CLASSIC_COMPUTER; break;
+	case ftl::URI::SCHEME_GROUP			: icon = ENTYPO_ICON_MERGE; break;
+	default: break;
+	}
+
+	auto *button = new Button(parent, ctrl_->getSourceName(s), icon);
+	if (ctrl_->isSourceActive(s)) {
+		button->setBackgroundColor(Color(0, 255, 0, 25));
+	}
+
+	button->setIconPosition(Button::IconPosition::Left);
+	button->setIconExtraScale(1.2);
+	button->setFontSize(18);
+	button->setTooltip(s);
+
+	button->setCallback([this, uri = s, hide]() {
+		ctrl_->add(uri);
+		if (hide) close();
+	});
+
+	return button;
+}
+
+void AddSourceWindow::rebuild() {
+	using namespace nanogui;
+
+	for (auto *w : tab_items_) {
+		while (w->childCount() > 0) w->removeChild(w->childCount()-1);
+	}
+	
+	Button *button;
+
+	auto srcs = ctrl_->getRecent();
+	for (auto &s : srcs) {
+		_addButton(s.uri, tab_items_[0]);
+	}
+
+	auto groups = ctrl_->getGroups();
+	for (auto &s : groups) {
+		_addButton(s, tab_items_[1]);
+	}
+
+	auto devsrcs = ctrl_->getDeviceSources();
+	for (auto &s : devsrcs) {
+		_addButton(s, tab_items_[2]);
+	}
+
+	auto *host_menu = new Widget(tab_items_[3]);
+	host_menu->setLayout(new BoxLayout(nanogui::Orientation::Horizontal, nanogui::Alignment::Maximum, 5,4));
+
+	button = new Button(host_menu, "Add", ENTYPO_ICON_PLUS);
+	button->setFontSize(18);
+	button->setTooltip("Connect to a new machine");
+	button->setCallback([this]() {
+		FormHelper *fh = new FormHelper(screen());
+		auto *win = fh->addWindow(Vector2i(10,10), "Add Host");
+		win->center();
+		win->setTheme(dynamic_cast<ftl::gui2::Screen*>(win->screen())->getTheme("window_dark"));
+		//win->setWidth(200);
+		fh->addVariable<std::string>("URI", [this,win](const std::string &v) {
+			try {
+				ctrl_->add(v);
+			} catch (const ftl::exception &e) {
+				LOG(ERROR) << "Add failed: " << e.what();
+			}
+			win->dispose();
+		}, [this]() {
+			return "";
+		})->setFixedWidth(150);
+		win->screen()->performLayout();
+		delete fh;
+	});
+
+	button = new Button(host_menu, "Clear", ENTYPO_ICON_CYCLE);
+	button->setFontSize(18);
+	button->setTooltip("Clear host history");
+	button->setCallback([this]() {
+		ctrl_->feed()->clearHostHistory();
+		uptodate_.clear();
+	});
+
+	auto hostsrcs = ctrl_->getHosts();
+	for (auto &s : hostsrcs) {
+		_addButton(s, tab_items_[3], false);
+	}
+
+	auto streamsrcs = ctrl_->getNetSources();
+	for (auto &s : streamsrcs) {
+		_addButton(s, tab_items_[4]);
+	}
+
+	auto *file_menu = new Widget(tab_items_[5]);
+	file_menu->setLayout(new BoxLayout(nanogui::Orientation::Horizontal, nanogui::Alignment::Maximum, 5,4));
+
+	button = new Button(file_menu, "Open", ENTYPO_ICON_PLUS);
+	button->setFontSize(18);
+	button->setTooltip("Open FTL File");
+	button->setCallback([this]() {
+		try {
+			std::string filename = file_dialog({ {"ftl", "FTL Captures"} }, false);
+			if (filename.size() > 0 && filename[0] == '/') {
+				filename = std::string("file://") + filename;
+			} else {
+				filename = std::string("file:///") + filename;
+			}
+#ifdef WIN32
+			auto p = filename.find_first_of('\\');
+			while (p != std::string::npos) {
+				filename[p] = '/';
+				p = filename.find_first_of('\\');
+			}
+#endif
+			ctrl_->add(filename);
+		} catch (const std::exception &e) {
+			LOG(ERROR) << "File load exception: " << e.what();
+		}
+		close();
+	});
+
+	button = new Button(file_menu, "Clear", ENTYPO_ICON_CYCLE);
+	button->setFontSize(18);
+	button->setTooltip("Clear file history");
+	button->setCallback([this]() {
+		ctrl_->feed()->clearFileHistory();
+		uptodate_.clear();
+	});
+
+	auto filesrcs = ctrl_->getFileSources();
+	for (auto &s : filesrcs) {
+		_addButton(s, tab_items_[5]);
+	}
+}
+
+void AddSourceWindow::close() {
+	setVisible(false);
+	//dispose();
+	ctrl_->disposeWindow();
+}
+
+void AddSourceWindow::draw(NVGcontext *ctx) {
+	{
+		UNIQUE_LOCK(mutex_, lk);
+		if (!uptodate_.test_and_set()) {
+			tabs_->requestFocus();  // Must ensure focus item not deleted
+			rebuild();
+			screen()->performLayout();
+		}
+	}
+
+	nanogui::Window::draw(ctx);
+}