[TD]make page grid unit aware

src/Mod/TechDraw/Gui/DlgPrefsTechDrawGeneral.ui

@@ -494,7 +494,7 @@ for ProjectionGroups</string>
      </property>
      <layout class="QGridLayout" name="gridLayout_4">
       <item row="0" column="0">
-       <layout class="QGridLayout" name="gridLayout_3">
+       <layout class="QGridLayout" name="gridLayout_3" columnstretch="1,0,2">
         <item row="0" column="0">
          <widget class="QLabel" name="label">
           <property name="minimumSize">
@@ -794,24 +794,29 @@ for ProjectionGroups</string>
      <layout class="QVBoxLayout" name="verticalLayout_5">
       <item>
        <layout class="QGridLayout" name="gridLayout" columnstretch="1,0,1">
-        <item row="1" column="2">
-         <widget class="Gui::PrefSpinBox" name="psb_GridSpacing">
-          <property name="alignment">
-           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        <item row="1" column="1">
+         <spacer name="horizontalSpacer">
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
           </property>
-          <property name="value">
-           <number>10</number>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>40</width>
+            <height>20</height>
+           </size>
           </property>
-          <property name="prefEntry" stdset="0">
-           <cstring>gridSpacing</cstring>
-          </property>
-          <property name="prefPath" stdset="0">
-           <cstring>/Mod/TechDraw/General</cstring>
-          </property>
-         </widget>
+         </spacer>
         </item>
         <item row="0" column="0">
          <widget class="Gui::PrefCheckBox" name="cb_ShowGrid">
+          <property name="font">
+           <font>
+            <italic>true</italic>
+           </font>
+          </property>
+          <property name="toolTip">
+           <string>Set ShowGrid property to true on new Pages.</string>
+          </property>
           <property name="text">
            <string>Show Grid</string>
           </property>
@@ -838,18 +843,24 @@ for ProjectionGroups</string>
           </property>
          </widget>
         </item>
-        <item row="1" column="1">
-         <spacer name="horizontalSpacer">
-          <property name="orientation">
-           <enum>Qt::Horizontal</enum>
+        <item row="1" column="2">
+         <widget class="Gui::PrefUnitSpinBox" name="psb_GridSpacing">
+          <property name="toolTip">
+           <string>Distance between Page grid lines.</string>
           </property>
-          <property name="sizeHint" stdset="0">
-           <size>
-            <width>40</width>
-            <height>20</height>
-           </size>
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
           </property>
-         </spacer>
+          <property name="value">
+           <double>10.000000000000000</double>
+          </property>
+          <property name="prefEntry" stdset="0">
+           <cstring>gridSpacing</cstring>
+          </property>
+          <property name="prefPath" stdset="0">
+           <cstring>psb_GridSpacing</cstring>
+          </property>
+         </widget>
         </item>
        </layout>
       </item>
@@ -890,11 +901,6 @@ for ProjectionGroups</string>
    <extends>Gui::FileChooser</extends>
    <header>Gui/PrefWidgets.h</header>
   </customwidget>
-  <customwidget>
-   <class>Gui::PrefSpinBox</class>
-   <extends>QSpinBox</extends>
-   <header>Gui/PrefWidgets.h</header>
-  </customwidget>
   <customwidget>
    <class>Gui::PrefCheckBox</class>
    <extends>QCheckBox</extends>

src/Mod/TechDraw/Gui/DlgPrefsTechDrawGeneralImp.cpp

@@ -44,6 +44,9 @@ DlgPrefsTechDrawGeneralImp::DlgPrefsTechDrawGeneralImp( QWidget* parent )
     ui->setupUi(this);
     ui->plsb_LabelSize->setUnit(Base::Unit::Length);
     ui->plsb_LabelSize->setMinimum(0);
+
+    ui->psb_GridSpacing->setUnit(Base::Unit::Length);
+    ui->psb_GridSpacing->setMinimum(0);
 }
 
 DlgPrefsTechDrawGeneralImp::~DlgPrefsTechDrawGeneralImp()
@@ -108,7 +111,13 @@ void DlgPrefsTechDrawGeneralImp::loadSettings()
     ui->pfc_Welding->onRestore();
     ui->pfc_FilePattern->onRestore();
     ui->le_NamePattern->onRestore();
+
+    bool gridDefault = PreferencesGui::showGrid();
+    ui->cb_ShowGrid->setChecked(gridDefault);
     ui->cb_ShowGrid->onRestore();
+
+    double spacingDefault = PreferencesGui::gridSpacing();
+    ui->psb_GridSpacing->setValue(spacingDefault);
     ui->psb_GridSpacing->onRestore();
 }
 

src/Mod/TechDraw/Gui/PreferencesGui.cpp

@@ -227,12 +227,12 @@ QColor PreferencesGui::gridQColor()
     return PreferencesGui::gridColor().asValue<QColor>();
 }
 
-int PreferencesGui::gridSpacing()
+double PreferencesGui::gridSpacing()
 {
     Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter().
                                          GetGroup("BaseApp")->GetGroup("Preferences")->
                                          GetGroup("Mod/TechDraw/General");
-    int spacing = hGrp->GetInt("gridSpacing", 10);
+    double spacing = hGrp->GetFloat("gridSpacing", 10.0);
     return spacing;
 }
 
@@ -241,6 +241,6 @@ bool PreferencesGui::showGrid()
     Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter().
                                          GetGroup("BaseApp")->GetGroup("Preferences")->
                                          GetGroup("Mod/TechDraw/General");
-    bool show = hGrp->GetInt("showGrid", true);
+    bool show = hGrp->GetBool("showGrid", true);
     return show;
 }

src/Mod/TechDraw/Gui/PreferencesGui.h

@@ -66,7 +66,7 @@ static QString     weldingDirectory();
 static bool showGrid();
 static App::Color gridColor();
 static QColor gridQColor();
-static int gridSpacing();
+static double gridSpacing();
 
 };
 

src/Mod/TechDraw/Gui/QGVPage.cpp

@@ -1320,31 +1320,31 @@ void QGVPage::drawForeground(QPainter *painter, const QRectF &rect)
     }
 }
 
-void QGVPage::makeGrid(int gridWidth, int gridHeight, int gridStep)
+void QGVPage::makeGrid(int gridWidth, int gridHeight, double gridStep)
 {
     QPainterPath grid;
-    int width = Rez::guiX(gridWidth);
-    int height = Rez::guiX(gridHeight);
-    int step = Rez::guiX(gridStep);
-    int horizStart = 0;
-    int vPos = 0;
+    double width = Rez::guiX(gridWidth);
+    double height = Rez::guiX(gridHeight);
+    double step = Rez::guiX(gridStep);
+    double horizStart = 0.0;
+    double vPos = 0;
     int rows = (height / step) + 1;
     //draw horizontal lines
     for (int i = 0; i < rows; i++) {
         vPos = i * step;
-        QPoint start (horizStart, -vPos);
-        QPoint end (width, -vPos);
+        QPointF start (horizStart, -vPos);
+        QPointF end (width, -vPos);
         grid.moveTo(start);
         grid.lineTo(end);
     }
     //draw vertical lines
-    int vertStart = 0;
+    double vertStart = 0.0;
+    double hPos = 0.0;
     int cols = (width / step) + 1;
-    int hPos = 0;
     for (int i = 0; i < cols; i++) {
         hPos = i * step;
-        QPoint start(hPos, -vertStart);
-        QPoint end(hPos, -height);
+        QPointF start(hPos, -vertStart);
+        QPointF end(hPos, -height);
         grid.moveTo(start);
         grid.lineTo(end);
     }

src/Mod/TechDraw/Gui/QGVPage.h

@@ -129,7 +129,7 @@ public:
     void saveSvg(QString filename);
     void postProcessXml(QTemporaryFile& tempFile, QString filename, QString pagename);
 
-    void makeGrid(int width, int height, int step);
+    void makeGrid(int width, int height, double step);
     void showGrid(bool state) {m_showGrid = state;}
     void updateViewport(void) {viewport()->repaint();}
 

src/Mod/TechDraw/Gui/ViewProviderPage.h

@@ -32,6 +32,8 @@
 
 #include <boost_signals2.hpp> 
 
+#include <App/PropertyUnits.h>
+
 namespace TechDraw{
     class DrawPage;
 }
@@ -53,7 +55,7 @@ public:
 
     App::PropertyBool  ShowFrames;
     App::PropertyBool  ShowGrid;
-    App::PropertyInteger GridSpacing;
+    App::PropertyDistance GridSpacing;
 
     virtual void attach(App::DocumentObject *) override;
     virtual void setDisplayMode(const char* ModeName) override;