implement ui

src/ui/HeaderBar.cpp

@@ -0,0 +1,72 @@
+#include "HeaderBar.h"
+
+#include <cmath>
+#include <string>
+
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QPushButton>
+#include <QSignalMapper>
+
+#include "Tick.h"
+
+const double HeaderBar::kSpeeds[]   = { 0.0, 0.5, 1.0, 2.0, 4.0 };
+const int    HeaderBar::kSpeedCount = 5;
+
+HeaderBar::HeaderBar(QWidget* parent)
+    : QWidget(parent)
+{
+    QHBoxLayout* layout = new QHBoxLayout(this);
+    layout->setContentsMargins(8, 4, 8, 4);
+    layout->setSpacing(8);
+
+    m_timeLabel   = new QLabel("00:00", this);
+    m_blocksLabel = new QLabel("Blocks: 0", this);
+    layout->addWidget(m_timeLabel);
+    layout->addWidget(m_blocksLabel);
+    layout->addStretch();
+
+    const char* labels[] = { "0x", "0.5x", "1x", "2x", "4x" };
+    QSignalMapper* mapper = new QSignalMapper(this);
+    for (int i = 0; i < kSpeedCount; ++i)
+    {
+        QPushButton* btn = new QPushButton(labels[i], this);
+        btn->setCheckable(true);
+        btn->setChecked(i == 2);
+        layout->addWidget(btn);
+        m_speedButtons.push_back(btn);
+        mapper->setMapping(btn, i);
+        connect(btn, SIGNAL(clicked()), mapper, SLOT(map()));
+    }
+    connect(mapper, SIGNAL(mapped(int)), this, SLOT(onSpeedButton(int)));
+
+    setFixedHeight(sizeHint().height());
+}
+
+void HeaderBar::onStateUpdated(Tick tick, int buildingBlocks, double gameSpeed)
+{
+    const int totalSeconds = static_cast<int>(ticksToSeconds(tick));
+    const int minutes = totalSeconds / 60;
+    const int seconds = totalSeconds % 60;
+
+    m_timeLabel->setText(
+        QString("%1:%2")
+            .arg(minutes, 2, 10, QChar('0'))
+            .arg(seconds, 2, 10, QChar('0')));
+
+    m_blocksLabel->setText(QString("Blocks: %1").arg(buildingBlocks));
+
+    for (int i = 0; i < kSpeedCount; ++i)
+    {
+        const bool active = (std::abs(kSpeeds[i] - gameSpeed) < 0.001);
+        m_speedButtons[static_cast<std::size_t>(i)]->setChecked(active);
+    }
+}
+
+void HeaderBar::onSpeedButton(int index)
+{
+    if (index >= 0 && index < kSpeedCount)
+    {
+        emit speedChanged(kSpeeds[index]);
+    }
+}