Qt: Add small decoder bar at the bottom of the hex view, still needs work

src/platform/qt/MemoryModel.cpp

@@ -204,6 +204,7 @@ void MemoryModel::mousePressEvent(QMouseEvent* event) {
 	uint32_t address = int(position.x() / m_cellSize.width()) + (int(position.y() / m_cellSize.height()) + m_top) * 16 + m_base;
 	m_selectionAnchor = address & ~(m_align - 1);
 	m_selection = qMakePair(m_selectionAnchor, m_selectionAnchor + m_align);
+	emit selectionChanged(m_selection.first, m_selection.second);
 	viewport()->update();
 }
 
@@ -219,6 +220,7 @@ void MemoryModel::mouseMoveEvent(QMouseEvent* event) {
 	} else {
 		m_selection = qMakePair(m_selectionAnchor, (address & ~(m_align - 1)) + m_align);
 	}
+	emit selectionChanged(m_selection.first, m_selection.second);
 	viewport()->update();
 }
 

src/platform/qt/MemoryModel.h

@@ -27,12 +27,17 @@ public:
 	void setController(GameController* controller);
 
 	void setRegion(uint32_t base, uint32_t size, const QString& name = QString());
+
 	void setAlignment(int);
+	int alignment() const { return m_align; }
 
 public slots:
 	void jumpToAddress(const QString& hex);
 	void jumpToAddress(uint32_t);
 
+signals:
+	void selectionChanged(uint32_t start, uint32_t end);
+
 protected:
 	void resizeEvent(QResizeEvent*) override;
 	void paintEvent(QPaintEvent*) override;

src/platform/qt/MemoryView.cpp

@@ -29,6 +29,8 @@ MemoryView::MemoryView(GameController* controller, QWidget* parent)
 	connect(m_ui.width32, &QAbstractButton::clicked, [this]() { m_ui.hexfield->setAlignment(4); });
 	connect(m_ui.setAddress, SIGNAL(valueChanged(const QString&)), m_ui.hexfield, SLOT(jumpToAddress(const QString&)));
 
+	connect(m_ui.hexfield, SIGNAL(selectionChanged(uint32_t, uint32_t)), this, SLOT(updateStatus(uint32_t, uint32_t)));
+
 	connect(controller, SIGNAL(gameStopped(GBAThread*)), this, SLOT(close()));
 }
 
@@ -54,3 +56,38 @@ void MemoryView::setIndex(int index) {
 	const auto& info = indexInfo[index];
 	m_ui.hexfield->setRegion(info.base, info.size, info.name);
 }
+
+void MemoryView::updateStatus(uint32_t start, uint32_t end) {
+	int align = m_ui.hexfield->alignment();
+	if (start & (align - 1) || end - start != align) {
+		m_ui.sintVal->clear();
+		m_ui.uintVal->clear();
+		return;
+	}
+	ARMCore* cpu = m_controller->thread()->cpu;
+	union {
+		uint32_t u32;
+		int32_t i32;
+		uint16_t u16;
+		int16_t i16;
+		uint8_t u8;
+		int8_t i8;
+	} value;
+	switch (align) {
+	case 1:
+		value.u8 = cpu->memory.load8(cpu, start, nullptr);
+		m_ui.sintVal->setText(QString::number(value.i8));
+		m_ui.uintVal->setText(QString::number(value.u8));
+		break;
+	case 2:
+		value.u16 = cpu->memory.load16(cpu, start, nullptr);
+		m_ui.sintVal->setText(QString::number(value.i16));
+		m_ui.uintVal->setText(QString::number(value.u16));
+		break;
+	case 4:
+		value.u32 = cpu->memory.load32(cpu, start, nullptr);
+		m_ui.sintVal->setText(QString::number(value.i32));
+		m_ui.uintVal->setText(QString::number(value.u32));
+		break;
+	}
+}

src/platform/qt/MemoryView.h

@@ -22,6 +22,7 @@ public:
 
 private slots:
 	void setIndex(int);
+	void updateStatus(uint32_t start, uint32_t end);
 
 private:
 	Ui::MemoryView m_ui;

src/platform/qt/MemoryView.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>550</width>
-    <height>610</height>
+    <height>640</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -185,6 +185,46 @@
      </property>
     </widget>
    </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_4">
+     <item>
+      <layout class="QFormLayout" name="formLayout">
+       <item row="0" column="0">
+        <widget class="QLabel" name="label_3">
+         <property name="text">
+          <string>Signed Integer:</string>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="1">
+        <widget class="QLineEdit" name="sintVal">
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <layout class="QFormLayout" name="formLayout_4">
+       <item row="0" column="0">
+        <widget class="QLabel" name="label_4">
+         <property name="text">
+          <string>Unsigned Integer:</string>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="1">
+        <widget class="QLineEdit" name="uintVal">
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
   </layout>
  </widget>
  <customwidgets>