Implement image uploads (#24)
1 files changed, 86 insertions, 0 deletions
diff --git a/src/ui/LoadingIndicator.cc b/src/ui/LoadingIndicator.cc
new file mode 100644
index 00000000..0fafaf23
--- /dev/null
+++ b/src/ui/LoadingIndicator.cc
@@ -0,0 +1,86 @@
+#include "LoadingIndicator.h"
+
+#include <QDebug>
+#include <QPoint>
+#include <QtGlobal>
+
+LoadingIndicator::LoadingIndicator(QWidget *parent)
+ : QWidget(parent)
+ , interval_(70)
+ , angle_(0)
+ , color_(Qt::black)
+{
+ setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+ setFocusPolicy(Qt::NoFocus);
+
+ timer_ = new QTimer();
+ connect(timer_, SIGNAL(timeout()), this, SLOT(onTimeout()));
+}
+
+LoadingIndicator::~LoadingIndicator()
+{
+ stop();
+
+ delete timer_;
+}
+
+void
+LoadingIndicator::paintEvent(QPaintEvent *e)
+{
+ Q_UNUSED(e)
+
+ if (!timer_->isActive())
+ return;
+
+ QPainter painter(this);
+ painter.setRenderHint(QPainter::Antialiasing);
+
+ int width = qMin(this->width(), this->height());
+
+ int outerRadius = (width - 4) * 0.5f;
+ int innerRadius = outerRadius * 0.78f;
+
+ int capsuleRadius = (outerRadius - innerRadius) / 2;
+
+ for (int i = 0; i < 8; i++) {
+ QColor color = color_;
+
+ color.setAlphaF(1.0f - (i / 8.0f));
+
+ painter.setPen(Qt::NoPen);
+ painter.setBrush(color);
+
+ qreal radius = capsuleRadius * (1.0f - (i / 16.0f));
+
+ painter.save();
+
+ painter.translate(rect().center());
+ painter.rotate(angle_ - i * 45.0f);
+
+ QPointF center = QPointF(-capsuleRadius, -innerRadius);
+ painter.drawEllipse(center, radius * 2, radius * 2);
+
+ painter.restore();
+ }
+}
+
+void
+LoadingIndicator::start()
+{
+ timer_->start(interval_);
+ show();
+}
+
+void
+LoadingIndicator::stop()
+{
+ timer_->stop();
+ hide();
+}
+
+void
+LoadingIndicator::onTimeout()
+{
+ angle_ = (angle_ + 45) % 360;
+ update();
+}
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