[apps/calcul] create a cell to represent history line

Change-Id: Ib24189e510c10a5541b4ec83ce4dc286fba40706

apps/calcul/Makefile

@@ -2,6 +2,7 @@ app_objs += $(addprefix apps/calcul/,\
   app.o\
   calcul_controller.o\
   calcul.o\
+  history_view_cell.o\
 )
 
 inline_images += apps/calcul/calcul_icon.png

apps/calcul/history_view_cell.cpp

@@ -0,0 +1,59 @@
+#include "history_view_cell.h"
+#include <assert.h>
+#include <string.h>
+
+namespace Calcul {
+
+HistoryViewCell::HistoryViewCell() :
+  m_calcul(nullptr),
+  m_highlighted(false),
+  m_result(BufferTextView(1.0f, 0.5f))
+{
+}
+
+int HistoryViewCell::numberOfSubviews() const {
+  return 1;
+}
+
+View * HistoryViewCell::subviewAtIndex(int index) {
+  assert(index == 0);
+  return &m_result;
+}
+
+void HistoryViewCell::layoutSubviews() {
+  KDCoordinate width = bounds().width();
+  KDCoordinate height = bounds().height();
+  // Position the result
+  KDSize prettyPrintSize = KDSize(0,0);
+  if (m_calcul && m_calcul->layout() != nullptr) {
+    prettyPrintSize = m_calcul->layout()->size();
+  }
+  KDRect resultFrame(prettyPrintSize.width(), 0, width - prettyPrintSize.width(), height);
+  m_result.setFrame(resultFrame);
+}
+
+void HistoryViewCell::setCalcul(Calcul * calcul) {
+  m_calcul = calcul;
+  char buffer[7];
+  m_calcul->evaluation()->convertFloatToText(buffer, 14, 7);
+  m_result.setText(buffer);
+}
+
+void HistoryViewCell::setHighlighted(bool highlight) {
+  m_highlighted = highlight;
+  KDColor backgroundColor = m_highlighted ? Palette::FocusCellBackgroundColor : Palette::CellBackgroundColor;
+  m_result.setBackgroundColor(backgroundColor);
+  markRectAsDirty(bounds());
+}
+
+void HistoryViewCell::drawRect(KDContext * ctx, KDRect rect) const {
+  // Select background color
+  KDColor backgroundColor = m_highlighted ? Palette::FocusCellBackgroundColor : Palette::CellBackgroundColor;
+  ctx->fillRect(rect, backgroundColor);
+  // Draw the pretty print
+  if (m_calcul && m_calcul->layout() != nullptr) {
+    m_calcul->layout()->draw(ctx, KDPointZero, KDColorBlack, backgroundColor);
+  }
+}
+
+}

apps/calcul/history_view_cell.h

@@ -0,0 +1,28 @@
+#ifndef CALCUL_HISTORY_VIEW_CELL_H
+#define CALCUL_HISTORY_VIEW_CELL_H
+
+#include <escher.h>
+#include "calcul.h"
+
+namespace Calcul {
+
+class HistoryViewCell : public View {
+public:
+  HistoryViewCell();
+  BufferTextView * result();
+  void setCalcul(Calcul * calcul);
+  void setHighlighted(bool highlight);
+  void drawRect(KDContext * ctx, KDRect rect) const override;
+
+  int numberOfSubviews() const override;
+  View * subviewAtIndex(int index) override;
+  void layoutSubviews() override;
+private:
+  Calcul * m_calcul;
+  bool m_highlighted;
+  BufferTextView m_result;
+};
+
+}
+
+#endif