Add initial GUI files.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>

gui/fpga_interchange/mainwindow.cc

@@ -0,0 +1,49 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2018  Miodrag Milanovic <miodrag@symbioticeda.com>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "mainwindow.h"
+
+#include <QMessageBox>
+#include <cstdlib>
+
+static void initMainResource() { Q_INIT_RESOURCE(nextpnr); }
+
+NEXTPNR_NAMESPACE_BEGIN
+
+MainWindow::MainWindow(std::unique_ptr<Context> context, CommandHandler *handler, QWidget *parent)
+        : BaseMainWindow(std::move(context), handler, parent)
+{
+    initMainResource();
+    QMessageBox::critical(0, "Error - FIXME", "No GUI support for nextpnr-generic");
+    std::exit(1);
+}
+
+MainWindow::~MainWindow() {}
+
+void MainWindow::newContext(Context *ctx)
+{
+    std::string title = "nextpnr-generic - " + ctx->getChipName();
+    setWindowTitle(title.c_str());
+}
+
+void MainWindow::createMenu() {}
+
+void MainWindow::new_proj() {}
+
+NEXTPNR_NAMESPACE_END

gui/fpga_interchange/mainwindow.h

@@ -0,0 +1,45 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2018  Miodrag Milanovic <miodrag@symbioticeda.com>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include "../basewindow.h"
+
+NEXTPNR_NAMESPACE_BEGIN
+
+class MainWindow : public BaseMainWindow
+{
+    Q_OBJECT
+
+  public:
+    explicit MainWindow(std::unique_ptr<Context> context, CommandHandler *handler, QWidget *parent = 0);
+    virtual ~MainWindow();
+
+  public:
+    void createMenu();
+
+  protected Q_SLOTS:
+    void new_proj() override;
+    void newContext(Context *ctx);
+};
+
+NEXTPNR_NAMESPACE_END
+
+#endif // MAINWINDOW_H

gui/fpga_interchange/nextpnr.qrc

@@ -0,0 +1,2 @@
+<RCC>
+</RCC>