nexus: Add stub GUI

Signed-off-by: David Shah <dave@ds0.me>

gui/nexus/mainwindow.cc

@@ -0,0 +1,87 @@
+/*
+ *  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 <QAction>
+#include <QFileDialog>
+#include <QFileInfo>
+#include <QIcon>
+#include <QInputDialog>
+#include <QLineEdit>
+#include <QSet>
+#include <fstream>
+#include "design_utils.h"
+#include "log.h"
+
+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();
+
+    std::string title = "nextpnr-nexus - [EMPTY]";
+    setWindowTitle(title.c_str());
+
+    connect(this, &BaseMainWindow::contextChanged, this, &MainWindow::newContext);
+
+    createMenu();
+}
+
+MainWindow::~MainWindow() {}
+
+void MainWindow::createMenu()
+{
+    // Add arch specific actions
+
+    // Add actions in menus
+}
+
+void MainWindow::new_proj()
+{
+    QStringList arch;
+
+    // TODO: better device picker
+    arch.push_back("LIFCL-40-9BG400CES");
+    arch.push_back("LIFCL-40-8BG72CES");
+
+    bool ok;
+    QString item = QInputDialog::getItem(this, "Select new context", "Chip:", arch, 0, false, &ok);
+    if (ok && !item.isEmpty()) {
+        ArchArgs chipArgs;
+        chipArgs.device = item.toStdString();
+        ctx = std::unique_ptr<Context>(new Context(chipArgs));
+        actionLoadJSON->setEnabled(true);
+        Q_EMIT contextChanged(ctx.get());
+    }
+}
+
+void MainWindow::newContext(Context *ctx)
+{
+    std::string title = "nextpnr-nexus - " + ctx->getChipName();
+    setWindowTitle(title.c_str());
+}
+
+void MainWindow::onDisableActions() {}
+
+void MainWindow::onUpdateActions() {}
+
+NEXTPNR_NAMESPACE_END

gui/nexus/mainwindow.h

@@ -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.
+ *
+ */
+
+#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();
+
+    void onDisableActions() override;
+    void onUpdateActions() override;
+
+  protected Q_SLOTS:
+    void new_proj() override;
+
+    void newContext(Context *ctx);
+};
+
+NEXTPNR_NAMESPACE_END
+
+#endif // MAINWINDOW_H

gui/nexus/nextpnr.qrc

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

nexus/arch.cc

@@ -254,6 +254,21 @@ std::vector<IdString> Arch::getBelPins(BelId bel) const
     return ret;
 }
 
+std::vector<std::pair<IdString, std::string>> Arch::getBelAttrs(BelId bel) const
+{
+    std::vector<std::pair<IdString, std::string>> ret;
+
+    ret.emplace_back(id("INDEX"), stringf("%d", bel.index));
+
+    ret.emplace_back(id("GRID_X"), stringf("%d", bel.tile % chip_info->width));
+    ret.emplace_back(id("GRID_Y"), stringf("%d", bel.tile / chip_info->width));
+    ret.emplace_back(id("BEL_Z"), stringf("%d", bel_data(bel).z));
+
+    ret.emplace_back(id("BEL_TYPE"), nameOf(getBelType(bel)));
+
+    return ret;
+}
+
 // -----------------------------------------------------------------------
 
 WireId Arch::getWireByName(IdString name) const
@@ -334,19 +349,58 @@ std::vector<std::pair<IdString, std::string>> Arch::getPipAttrs(PipId pip) const
 
 // -----------------------------------------------------------------------
 
+namespace {
+const float bel_ofs_x = 0.7, bel_ofs_y = 0.0375;
+const float bel_sp_x = 0.1, bel_sp_y = 0.1;
+const float bel_width = 0.075, bel_height = 0.075;
+} // namespace
+
 std::vector<GraphicElement> Arch::getDecalGraphics(DecalId decal) const
 {
     std::vector<GraphicElement> ret;
 
+    switch (decal.type) {
+    case DecalId::TYPE_BEL: {
+        auto style = decal.active ? GraphicElement::STYLE_ACTIVE : GraphicElement::STYLE_INACTIVE;
+        if (decal.index != -1) {
+            int slice = (decal.index >> 3) & 0x3;
+            int bel = decal.index & 0x7;
+            float x1, x2, y1, y2;
+            if (bel == BEL_RAMW) {
+                x1 = bel_ofs_x;
+                y1 = bel_ofs_y + 2 * bel_sp_y * slice;
+                x2 = x1 + bel_sp_x + bel_width;
+                y2 = y1 + bel_height;
+            } else {
+                x1 = bel_ofs_x + bel_sp_x * (bel >> 1);
+                y1 = bel_ofs_y + 2 * bel_sp_y * slice + bel_sp_y * (bel & 0x1);
+                if (slice >= 2)
+                    y1 += bel_sp_y * 1.5;
+                x2 = x1 + bel_width;
+                y2 = y1 + bel_height;
+            }
+            ret.emplace_back(GraphicElement::TYPE_BOX, style, x1, y1, x2, y2, 1);
+        }
+        break;
+    };
+    default:
+        break;
+    }
+
     return ret;
 }
 
 DecalXY Arch::getBelDecal(BelId bel) const
 {
     DecalXY decalxy;
+    decalxy.decal.type = DecalId::TYPE_BEL;
+    if (tile_is(bel, LOC_LOGIC))
+        decalxy.decal.index = bel_data(bel).z;
+    else
         decalxy.decal.index = -1;
-    decalxy.x = 0;
-    decalxy.y = 0;
+    decalxy.decal.active = (getBoundBelCell(bel) != nullptr);
+    decalxy.x = bel.tile % chip_info->width;
+    decalxy.y = bel.tile / chip_info->width;
     return decalxy;
 }
 

nexus/archdefs.h

@@ -136,8 +136,14 @@ struct DecalId
     int32_t index = -1;
     bool active = false;
 
-    bool operator==(const DecalId &other) const { return (type == other.type) && (index == other.index); }
-    bool operator!=(const DecalId &other) const { return (type != other.type) || (index != other.index); }
+    bool operator==(const DecalId &other) const
+    {
+        return (type == other.type) && (index == other.index) && (active == other.active);
+    }
+    bool operator!=(const DecalId &other) const
+    {
+        return (type != other.type) || (index != other.index) || (active != other.active);
+    }
 };
 
 struct ArchNetInfo