Improve visualization for tool Point of intersection circle and segment.

src/libs/vtools/dialogs/tools/dialogpointofcontact.cpp

@@ -45,11 +45,12 @@
 #include "../../visualization/visualization.h"
 #include "../../visualization/line/vistoolpointofcontact.h"
 #include "../ifc/xml/vabstractpattern.h"
-#include "../ifc/xml/vdomdocument.h"
 #include "../support/dialogeditwrongformula.h"
 #include "../vmisc/vabstractapplication.h"
 #include "../vmisc/vcommonsettings.h"
 #include "ui_dialogpointofcontact.h"
+#include "../vwidgets/vabstractmainwindow.h"
+#include "../vgeometry/vpointf.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -186,6 +187,50 @@ void DialogPointOfContact::DeployFormulaTextEdit()
     DeployFormula(this, ui->plainTextEditFormula, ui->pushButtonGrowLength, formulaBaseHeight);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogPointOfContact::ShowDialog(bool click)
+{
+    if (not prepare)
+    {
+        return;
+    }
+
+    auto FinishCreating = [this]()
+    {
+        vis->SetMode(Mode::Show);
+        vis->RefreshGeometry();
+
+        emit ToolTip(QString());
+
+        setModal(true);
+        show();
+    };
+
+    if (click)
+    {
+        // The check need to ignore first release of mouse button.
+        // User can select point by clicking on a label.
+        if (not m_firstRelease)
+        {
+            m_firstRelease = true;
+            return;
+        }
+
+        auto *scene = qobject_cast<VMainGraphicsScene *>(VAbstractValApplication::VApp()->getCurrentScene());
+        SCASSERT(scene != nullptr)
+
+        const QSharedPointer<VPointF> center = data->GeometricObject<VPointF>(getCenter());
+
+        QLineF line(static_cast<QPointF>(*center), scene->getScenePos());
+
+        setRadius(QString::number(FromPixel(line.length(), *data->GetPatternUnit())));
+
+        FinishCreating();
+    }
+
+    FinishCreating();
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ChoosedObject gets id and type of selected object. Save right data and ignore wrong.
@@ -194,8 +239,11 @@ void DialogPointOfContact::DeployFormulaTextEdit()
  */
 void DialogPointOfContact::ChosenObject(quint32 id, const SceneObject &type)
 {
-    if (prepare == false)// After first choose we ignore all objects
+    if (prepare)// After first choose we ignore all objects
     {
+        return;
+    }
+
     if (type == SceneObject::Point)
     {
         VisToolPointOfContact *line = qobject_cast<VisToolPointOfContact *>(vis);
@@ -232,11 +280,14 @@ void DialogPointOfContact::ChosenObject(quint32 id, const SceneObject &type)
                 {
                     if (SetObject(id, ui->comboBoxCenter, QString()))
                     {
+                        auto *window = qobject_cast<VAbstractMainWindow *>(
+                            VAbstractValApplication::VApp()->getMainWindow());
+                        SCASSERT(window != nullptr)
+                        connect(line, &Visualization::ToolTip, window, &VAbstractMainWindow::ShowToolTip);
+
                         line->SetRadiusId(id);
                         line->RefreshGeometry();
                         prepare = true;
-                            this->setModal(true);
-                            this->show();
                     }
                 }
             }
@@ -246,7 +297,6 @@ void DialogPointOfContact::ChosenObject(quint32 id, const SceneObject &type)
         }
     }
 }
-}
 
 //---------------------------------------------------------------------------------------------------------------------
 void DialogPointOfContact::SaveData()

src/libs/vtools/dialogs/tools/dialogpointofcontact.h

@@ -71,6 +71,8 @@ public:
 
     void    SetNotes(const QString &notes);
     QString GetNotes() const;
+
+    void ShowDialog(bool click) override;
 public slots:
     virtual void   ChosenObject(quint32 id, const SceneObject &type) override;
     /**
@@ -110,6 +112,8 @@ private:
 
     /** @brief number number of handled objects */
     qint32 number{0};
+
+    bool m_firstRelease{false};
 };
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vtools/visualization/line/vistoolpointofcontact.cpp

@@ -41,6 +41,7 @@
 #include "../visualization.h"
 #include "visline.h"
 #include "../vwidgets/global.h"
+#include "../vmisc/vmodifierkey.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 VisToolPointOfContact::VisToolPointOfContact(const VContainer *data, QGraphicsItem *parent)
@@ -88,6 +89,25 @@ void VisToolPointOfContact::RefreshGeometry()
                     m_circle->setRect(PointRect(m_radius));
                     DrawPoint(m_circle, static_cast<QPointF>(*third), Color(VColor::SupportColor), Qt::DashLine);
                 }
+                else if (GetMode() == Mode::Creation)
+                {
+                    QLineF cursorLine (static_cast<QPointF>(*third), ScenePos());
+                    qreal radius = cursorLine.length();
+
+                    QPointF fPoint;
+                    VToolPointOfContact::FindPoint(radius, static_cast<QPointF>(*third), static_cast<QPointF>(*first),
+                                                   static_cast<QPointF>(*second), &fPoint);
+                    DrawPoint(m_point, fPoint, Color(VColor::MainColor));
+
+                    m_circle->setRect(PointRect(radius));
+                    DrawPoint(m_circle, static_cast<QPointF>(*third), Color(VColor::SupportColor), Qt::DashLine);
+
+                    const QString prefix = UnitsToStr(VAbstractValApplication::VApp()->patternUnits(), true);
+                    SetToolTip(tr("Radius = %1%2; "
+                                  "<b>Mouse click</b> - finish selecting the radius, "
+                                  "<b>%3</b> - skip")
+                                   .arg(LengthToUser(radius), prefix, VModifierKey::EnterKey()));
+                }
             }
         }
     }