From fa867875a15faf61ceef4bbc7b6e4f281fa91954 Mon Sep 17 00:00:00 2001
From: Fanda Vacek <fanda.vacek@gmail.com>
Date: Sat, 9 Feb 2019 20:06:55 +0100
Subject: Correct MemoryDock header fields values.

---
 qtmips_gui/memorymodel.cpp | 29 ++++++++++++++++++-----------
 qtmips_gui/memorymodel.h   |  6 ++++--
 2 files changed, 22 insertions(+), 13 deletions(-)

diff --git a/qtmips_gui/memorymodel.cpp b/qtmips_gui/memorymodel.cpp
index 5596b35..71df4ce 100644
--- a/qtmips_gui/memorymodel.cpp
+++ b/qtmips_gui/memorymodel.cpp
@@ -40,20 +40,10 @@ MemoryModel::MemoryModel(QObject *parent)
     cell_size = CELLSIZE_WORD;
     cells_per_row = 1;
     index0_offset = 0;
-    updateHeaderLabels();
-}
-
-void MemoryModel::updateHeaderLabels() {
-    setHeaderData(0, Qt::Horizontal, QString("Address"));
-    for (unsigned int i = 0; i < cells_per_row; i++) {
-        std::uint32_t addr = i * cellSizeBytes();
-        setHeaderData(i + 1, Qt::Horizontal, QString("+0x") +
-                      QString::number(addr, 16));
-    }
 }
 
 int MemoryModel::rowCount(const QModelIndex & /*parent*/) const {
-   std::uint64_t rows = (0x10000000 + cells_per_row - 1) / cells_per_row;
+   std::uint64_t rows = (0x100 + cells_per_row - 1) / cells_per_row;
    return rows;
 }
 
@@ -61,6 +51,23 @@ int MemoryModel::columnCount(const QModelIndex & /*parent*/) const {
     return 2;
 }
 
+QVariant MemoryModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    if(orientation == Qt::Horizontal) {
+        if(role == Qt::DisplayRole) {
+            if(section == 0) {
+                return tr("Address");
+            }
+            else {
+                std::uint32_t addr = (section - 1) * cellSizeBytes();
+                QString ret = "+0x" + QString::number(addr, 16);
+                return ret;
+            }
+        }
+    }
+    return Super::headerData(section, orientation, role);
+}
+
 QVariant MemoryModel::data(const QModelIndex &index, int role) const {
     if (role == Qt::DisplayRole)
     {
diff --git a/qtmips_gui/memorymodel.h b/qtmips_gui/memorymodel.h
index badb224..8a01531 100644
--- a/qtmips_gui/memorymodel.h
+++ b/qtmips_gui/memorymodel.h
@@ -41,6 +41,8 @@
 class MemoryModel : public QAbstractTableModel
 {
     Q_OBJECT
+
+    using Super = QAbstractTableModel;
 public:
     enum MemoryCellSize {
         CELLSIZE_BYTE,
@@ -51,10 +53,10 @@ public:
     MemoryModel(QObject *parent);
     int rowCount(const QModelIndex &parent = QModelIndex()) const override ;
     int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+    QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
 private:
-    void updateHeaderLabels();
-    inline unsigned int cellSizeBytes() {
+    inline unsigned int cellSizeBytes() const {
         switch (cell_size) {
         case CELLSIZE_BYTE:
             return 1;
-- 
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