From d55dbbb61e47dde15007987895b4ebd9dbc42699 Mon Sep 17 00:00:00 2001
From: Ronan Le Tiec <ronanletiec@gmail.com>
Date: Sat, 14 Nov 2020 10:20:02 +0100
Subject: [PATCH] Add scale spinbox functionality

---
 src/app/puzzle/vpmainwindow.cpp | 46 +++++++++++++++++++++++++++++++--
 src/app/puzzle/vpmainwindow.h   | 10 ++++++-
 src/app/puzzle/vpmainwindow.ui  |  4 +--
 3 files changed, 55 insertions(+), 5 deletions(-)

diff --git a/src/app/puzzle/vpmainwindow.cpp b/src/app/puzzle/vpmainwindow.cpp
index e4a000619..97740e8de 100644
--- a/src/app/puzzle/vpmainwindow.cpp
+++ b/src/app/puzzle/vpmainwindow.cpp
@@ -29,6 +29,7 @@
 
 #include <QFileDialog>
 #include <QCloseEvent>
+#include <QtMath>
 
 #include "ui_vpmainwindow.h"
 #include "dialogs/vpdialogabout.h"
@@ -84,7 +85,7 @@ VPMainWindow::VPMainWindow(const VPCommandLinePtr &cmd, QWidget *parent) :
     InitCarrousel();
     InitMainGraphics();
 
-    InitToolBar();
+    InitZoomToolBar();
 
     SetPropertiesData();
 
@@ -477,11 +478,15 @@ void VPMainWindow::InitMainGraphics()
     ui->centralWidget->layout()->addWidget(m_graphicsView);
 
     m_graphicsView->RefreshLayout();
+
+    connect(m_graphicsView, &VPMainGraphicsView::ScaleChanged, this, &VPMainWindow::on_ScaleChanged);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void VPMainWindow::InitToolBar()
+void VPMainWindow::InitZoomToolBar()
 {
+
+    // connect the zoom buttons and shortcuts to the slots
     QList<QKeySequence> zoomInShortcuts;
     zoomInShortcuts.append(QKeySequence(QKeySequence::ZoomIn));
     zoomInShortcuts.append(QKeySequence(Qt::ControlModifier + Qt::Key_Plus + Qt::KeypadModifier));
@@ -504,6 +509,28 @@ void VPMainWindow::InitToolBar()
     zoomFitBestShortcuts.append(QKeySequence(Qt::ControlModifier + Qt::Key_Equal));
     ui->actionZoomFitBest->setShortcuts(zoomFitBestShortcuts);
     connect(ui->actionZoomFitBest, &QAction::triggered, m_graphicsView, &VPMainGraphicsView::ZoomFitBest);
+
+    // defined the scale
+    ui->toolBarZoom->addSeparator();
+    QLabel* zoomScale = new QLabel(tr("Scale:"), this);
+    ui->toolBarZoom->addWidget(zoomScale);
+
+    m_doubleSpinBoxScale = new QDoubleSpinBox(this);
+    m_doubleSpinBoxScale->setDecimals(1);
+    m_doubleSpinBoxScale->setSuffix("%");
+    on_ScaleChanged(m_graphicsView->transform().m11());
+    connect(m_doubleSpinBoxScale.data(), QOverload<double>::of(&QDoubleSpinBox::valueChanged),
+            this, [this](double d){m_graphicsView->Zoom(d/100.0);});
+    ui->toolBarZoom->addWidget(m_doubleSpinBoxScale);
+
+
+    // define the mouse position
+    ui->toolBarZoom->addSeparator();
+
+    m_mouseCoordinate = new QLabel(QString("0, 0 (%1)").arg(UnitsToStr(m_layout->GetUnit(), true)));
+    ui->toolBarZoom->addWidget(m_mouseCoordinate);
+    ui->toolBarZoom->addSeparator();
+
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -1057,3 +1084,18 @@ void VPMainWindow::on_PieceRotationChanged()
         SetDoubleSpinBoxValue(ui->doubleSpinBoxCurrentPieceAngle, angle);
     }
 }
+
+
+//---------------------------------------------------------------------------------------------------------------------
+void VPMainWindow::on_ScaleChanged(qreal scale)
+{
+    if (not m_doubleSpinBoxScale.isNull())
+    {
+        m_doubleSpinBoxScale->blockSignals(true);
+        m_doubleSpinBoxScale->setMaximum(qFloor(VPMainGraphicsView::MaxScale()*1000)/10.0);
+        m_doubleSpinBoxScale->setMinimum(qFloor(VPMainGraphicsView::MinScale()*1000)/10.0);
+        m_doubleSpinBoxScale->setValue(qFloor(scale*1000)/10.0);
+        m_doubleSpinBoxScale->setSingleStep(1);
+        m_doubleSpinBoxScale->blockSignals(false);
+    }
+}
diff --git a/src/app/puzzle/vpmainwindow.h b/src/app/puzzle/vpmainwindow.h
index fd004d680..5e74f3f1d 100644
--- a/src/app/puzzle/vpmainwindow.h
+++ b/src/app/puzzle/vpmainwindow.h
@@ -103,6 +103,9 @@ private:
     VPLayout *m_layout{nullptr};
     QList<VPPiece *>m_selectedPieces{QList<VPPiece *>()};
 
+    QLabel* m_mouseCoordinate{nullptr};
+    QPointer<QDoubleSpinBox> m_doubleSpinBoxScale{nullptr};
+
     /**
      * @brief CreatePiece creates a piece from the given VLayoutPiece data
      * @param rawPiece the raw piece data
@@ -152,7 +155,7 @@ private:
     /**
      * @brief InitToolBar Initialises the tool bar
      */
-    void InitToolBar();
+    void InitZoomToolBar();
 
     /**
      * @brief SetPropertiesData Sets the values of UI elements
@@ -395,6 +398,11 @@ private slots:
      */
     void on_PieceRotationChanged();
 
+    /**
+     * @brief on_ScaleChanged
+     */
+    void on_ScaleChanged(qreal scale);
+
 };
 
 #endif // VPMAINWINDOW_H
diff --git a/src/app/puzzle/vpmainwindow.ui b/src/app/puzzle/vpmainwindow.ui
index 84b9fa0ea..412528d40 100644
--- a/src/app/puzzle/vpmainwindow.ui
+++ b/src/app/puzzle/vpmainwindow.ui
@@ -1182,7 +1182,7 @@
     </layout>
    </widget>
   </widget>
-  <widget class="QToolBar" name="toolBarTools">
+  <widget class="QToolBar" name="toolBarZoom">
    <property name="windowTitle">
     <string>toolBar</string>
    </property>
@@ -1311,7 +1311,7 @@
      <normaloff>.</normaloff>.</iconset>
    </property>
    <property name="text">
-    <string>Zoom sheet</string>
+    <string>Zoom fit best</string>
    </property>
    <property name="toolTip">
     <string>Zoom sheet</string>