Started the code for the Profile Plotting

This small patch adds a new class - ProfileGraphicsView
it's a QGraphicsView based class that will holds all
graphics-items for the plotting.

The setup is simple, just call ui->ListView->plot( dive )  ( that's
already a ProfileGraphicsView and magic will happen.

Since Im using a QGraphicsView , the size of the canvas doesn't
matter and I'm fixing it at 0,0,100,100. when a resize is done,
the resizeEvent will be called, fitting the scene's rectangle on
the view.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>

Makefile

@@ -39,6 +39,7 @@ HEADERS = \
 	qt-ui/plotareascene.h \
 	qt-ui/starwidget.h \
 	qt-ui/modeldelegates.h \
+	qt-ui/profilegraphics.h \
 
 
 SOURCES = \
@@ -67,6 +68,7 @@ SOURCES = \
 	qt-ui/plotareascene.cpp \
 	qt-ui/starwidget.cpp \
 	qt-ui/modeldelegates.cpp \
+	qt-ui/profilegraphics.cpp \
 	$(RESFILE)
 
 

qt-ui/mainwindow.cpp

@@ -94,6 +94,8 @@ void MainWindow::dive_selection_changed(const QItemSelection& newSelection, cons
 			continue;
 		select_dive(get_divenr(d));
 	}
+
+	ui->ProfileWidget->plot( get_dive(selected_dive) );
 }
 
 void MainWindow::on_actionSave_triggered()

qt-ui/mainwindow.ui

@@ -25,7 +25,7 @@
         <enum>Qt::Horizontal</enum>
        </property>
        <widget class="MainTab" name="InfoWidget" native="true"/>
-       <widget class="QGraphicsView" name="ProfileWidget"/>
+       <widget class="ProfileGraphicsView" name="ProfileWidget"/>
       </widget>
       <widget class="DiveListView" name="ListWidget">
        <property name="styleSheet">
@@ -88,7 +88,7 @@
      <x>0</x>
      <y>0</y>
      <width>763</width>
-     <height>19</height>
+     <height>25</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -339,6 +339,11 @@
    <extends>QTreeView</extends>
    <header>divelistview.h</header>
   </customwidget>
+  <customwidget>
+   <class>ProfileGraphicsView</class>
+   <extends>QGraphicsView</extends>
+   <header>profilegraphics.h</header>
+  </customwidget>
  </customwidgets>
  <resources/>
  <connections/>

qt-ui/profilegraphics.cpp

@@ -0,0 +1,26 @@
+#include "profilegraphics.h"
+
+#include <QGraphicsScene>
+#include <QResizeEvent>
+
+#include <QDebug>
+
+ProfileGraphicsView::ProfileGraphicsView(QWidget* parent) : QGraphicsView(parent)
+{
+	setScene(new QGraphicsScene());
+	scene()->setSceneRect(0,0,100,100);
+}
+
+void ProfileGraphicsView::plot(struct dive *d)
+{
+	qDebug() << "Start the plotting of the dive here.";
+}
+
+void ProfileGraphicsView::resizeEvent(QResizeEvent *event)
+{
+	// Fits the scene's rectangle on the view.
+	// I can pass some parameters to this -
+	// like Qt::IgnoreAspectRatio or Qt::KeepAspectRatio
+	QRectF r = scene()->sceneRect();
+	fitInView ( r.x() - 2, r.y() -2, r.width() + 4, r.height() + 4); // do a little bit of spacing;
+}

qt-ui/profilegraphics.h

@@ -0,0 +1,17 @@
+#ifndef PROFILEGRAPHICS_H
+#define PROFILEGRAPHICS_H
+
+#include <QGraphicsView>
+
+class ProfileGraphicsView : public QGraphicsView {
+Q_OBJECT
+public:
+	ProfileGraphicsView(QWidget* parent = 0);
+	void plot(struct dive *d);
+
+protected:
+	void resizeEvent(QResizeEvent *event);
+
+};
+
+#endif