From 0beceede5f19d50f859e2d50f4fe8ef14ed84944 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Mon, 14 Oct 2019 09:46:21 +0200
Subject: [PATCH] [apps/shared][apps/calculation] Create CurveView::drawLabel
 and use it in complex_graph_view

---
 .../additional_outputs/complex_graph_view.cpp |  4 ++
 apps/shared/curve_view.cpp                    | 43 +++++++++++++++++++
 apps/shared/curve_view.h                      |  1 +
 3 files changed, 48 insertions(+)

diff --git a/apps/calculation/additional_outputs/complex_graph_view.cpp b/apps/calculation/additional_outputs/complex_graph_view.cpp
index 1b62461bd..26de82ed4 100644
--- a/apps/calculation/additional_outputs/complex_graph_view.cpp
+++ b/apps/calculation/additional_outputs/complex_graph_view.cpp
@@ -14,6 +14,10 @@ void ComplexGraphView::drawRect(KDContext * ctx, KDRect rect) const {
   ctx->fillRect(rect, KDColorWhite);
   drawAxes(ctx, rect);
   drawDot(ctx, rect, m_complex->x(), m_complex->y(), KDColorBlack);
+  drawLabel(ctx, rect, Axis::Horizontal, m_complex->x());
+  drawLabel(ctx, rect, Axis::Vertical, m_complex->y());
+
+
 }
 
 }
diff --git a/apps/shared/curve_view.cpp b/apps/shared/curve_view.cpp
index ed7cacfe1..ceffbc973 100644
--- a/apps/shared/curve_view.cpp
+++ b/apps/shared/curve_view.cpp
@@ -230,6 +230,49 @@ void CurveView::simpleDrawBothAxesLabels(KDContext * ctx, KDRect rect) const {
   drawLabels(ctx, rect, Axis::Horizontal, true);
 }
 
+//TODO: factorize
+void CurveView::drawLabel(KDContext * ctx, KDRect rect, Axis axis, float grad) const {
+  Axis otherAxis = (axis == Axis::Horizontal) ? Axis::Vertical : Axis::Horizontal;
+  float axisCoordinate = std::round(floatToPixel(otherAxis, 0.0f));
+  KDCoordinate labelPosition = std::round(floatToPixel(axis, grad));
+  KDRect graduation = axis == Axis::Horizontal ?
+    KDRect(
+        labelPosition,
+        axisCoordinate -(k_labelGraduationLength-2)/2,
+        1,
+        k_labelGraduationLength) :
+    KDRect(
+        axisCoordinate-(k_labelGraduationLength-2)/2,
+        labelPosition,
+        k_labelGraduationLength,
+        1);
+  ctx->fillRect(graduation, KDColorBlack);
+
+  char labelBuffer[k_labelBufferMaxSize];
+  PrintFloat::ConvertFloatToText<float>(
+        grad,
+        labelBuffer,
+        k_labelBufferMaxSize,
+        k_labelBufferMaxGlyphLength,
+        k_numberSignificantDigits,
+        Preferences::PrintFloatMode::Decimal);
+
+  float xPosition = 0.0f;
+  float yPosition = 0.0f;
+  KDSize textSize = k_font->stringSize(labelBuffer);
+  if (axis == Axis::Horizontal) {
+    xPosition = labelPosition - textSize.width()/2;
+    yPosition = axisCoordinate + k_labelMargin;
+  } else {
+    yPosition = labelPosition - textSize.height()/2;
+    xPosition = axisCoordinate - k_labelMargin - textSize.width();
+  }
+  KDPoint origin = KDPoint(xPosition, yPosition);
+  if (rect.intersects(KDRect(origin, textSize))) {
+    ctx->drawString(labelBuffer, origin, k_font, KDColorBlack, KDColorWhite);
+  }
+}
+
 void CurveView::drawLabels(KDContext * ctx, KDRect rect, Axis axis, bool shiftOrigin, bool graduationOnly, bool fixCoordinate, KDCoordinate fixedCoordinate, KDColor backgroundColor) const {
   int numberLabels = numberOfLabels(axis);
   if (numberLabels <= 1) {
diff --git a/apps/shared/curve_view.h b/apps/shared/curve_view.h
index c33f9badf..eea6cf319 100644
--- a/apps/shared/curve_view.h
+++ b/apps/shared/curve_view.h
@@ -72,6 +72,7 @@ protected:
     bool fillBar, KDColor defaultColor, KDColor highlightColor,  float highlightLowerBound = INFINITY, float highlightUpperBound = -INFINITY) const;
   void computeLabels(Axis axis);
   void simpleDrawBothAxesLabels(KDContext * ctx, KDRect rect) const;
+  void drawLabel(KDContext * ctx, KDRect rect, Axis axis, float grad) const;
   void drawLabels(KDContext * ctx, KDRect rect, Axis axis, bool shiftOrigin, bool graduationOnly = false, bool fixCoordinate = false, KDCoordinate fixedCoordinate = 0, KDColor backgroundColor = KDColorWhite) const;
   View * m_bannerView;
   CurveViewCursor * m_curveViewCursor;