[apps/shared] Move apps/graph/list/function_expression_cell in shared

folder to be used by sequence

Change-Id: I4a019c322cc7cb864479b200ee56d05234f5491c

apps/shared/function_expression_cell.cpp

@@ -0,0 +1,52 @@
+#include "function_expression_cell.h"
+#include <assert.h>
+
+namespace Shared {
+
+FunctionExpressionCell::FunctionExpressionCell() :
+  EvenOddCell(),
+  m_function(nullptr),
+  m_expressionView(ExpressionView())
+{
+}
+
+void FunctionExpressionCell::setFunction(Function * f) {
+  m_function = f;
+  m_expressionView.setExpression(m_function->layout());
+}
+
+void FunctionExpressionCell::reloadCell() {
+  EvenOddCell::reloadCell();
+  m_expressionView.setBackgroundColor(backgroundColor());
+  if (m_function) {
+    bool active = m_function->isActive();
+    KDColor textColor = active ? KDColorBlack : Palette::GreyDark;
+    m_expressionView.setTextColor(textColor);
+  }
+}
+
+Function * FunctionExpressionCell::function() {
+  return m_function;
+}
+
+int FunctionExpressionCell::numberOfSubviews() const {
+  return 1;
+}
+
+View * FunctionExpressionCell::subviewAtIndex(int index) {
+  assert(index == 0);
+  return &m_expressionView;
+}
+
+void FunctionExpressionCell::layoutSubviews() {
+  KDRect expressionFrame(k_separatorThickness, 0, bounds().width() - k_separatorThickness, bounds().height());
+  m_expressionView.setFrame(expressionFrame);
+}
+
+void FunctionExpressionCell::drawRect(KDContext * ctx, KDRect rect) const {
+  EvenOddCell::drawRect(ctx, rect);
+  // Color the separator
+  ctx->fillRect(KDRect(0, 0, k_separatorThickness, bounds().height()), Palette::GreyBright);
+}
+
+}