Adds a title to the chart, patch 1242262 Matthew D.P.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35172 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

contrib/include/wx/plot/plot.h

@@ -44,6 +44,7 @@ class WXDLLIMPEXP_PLOT wxPlotArea;
 class WXDLLIMPEXP_PLOT wxPlotXAxisArea;
 class WXDLLIMPEXP_PLOT wxPlotYAxisArea;
 class WXDLLIMPEXP_PLOT wxPlotWindow;
+class WXDLLIMPEXP_CORE wxStaticText;
 
 //-----------------------------------------------------------------------------
 // consts
@@ -128,15 +129,15 @@ public:
 
     void SetStartY( double startY )
         { m_startY = startY; }
-    double GetStartY()
+    double GetStartY() const
         { return m_startY; }
     void SetEndY( double endY )
         { m_endY = endY; }
-    double GetEndY()
+    double GetEndY() const
         { return m_endY; }
     void SetOffsetY( int offsetY )
        { m_offsetY = offsetY; }
-    int GetOffsetY()
+    int GetOffsetY() const
        { return m_offsetY; }
 
     void SetPenNormal( const wxPen &pen )
@@ -144,6 +145,11 @@ public:
     void SetPenSelected( const wxPen &pen )
        { m_penSelected = pen; }
 
+    const wxPen& GetPenNormal() const
+       { return m_penNormal; }
+    const wxPen& GetPenSelected() const
+       { return m_penSelected; }
+
 private:
     int     m_offsetY;
     double  m_startY;
@@ -358,6 +364,8 @@ public:
 
     void ResetScrollbar();
 
+    void AddChartTitle( const wxString&, wxFont = *wxNORMAL_FONT, wxColour = *wxBLACK );
+
 private:
     friend class wxPlotArea;
     friend class wxPlotXAxisArea;
@@ -377,6 +385,14 @@ private:
     bool               m_scrollOnThumbRelease;
     bool               m_enlargeAroundWindowCentre;
 
+    wxString           m_title;
+    wxFont             m_titleFont;
+    wxColour           m_titleColour;
+    wxStaticText*      m_titleStaticText;
+    wxBoxSizer*        m_plotAndTitleSizer;
+
+    void DrawChartTitle();
+
     DECLARE_CLASS(wxPlotWindow)
     DECLARE_EVENT_TABLE()
 };

contrib/samples/plot/plot.cpp

@@ -129,6 +129,13 @@ MyFrame::MyFrame()
     m_plot->SetUnitsPerValue( 0.01 );
 //    m_plot->SetScrollOnThumbRelease( true );
 
+    //Add a blue, 16pt chart title
+    wxString titleText( _T("The Chart Title") );
+    wxFont titleFont( *wxNORMAL_FONT );
+    titleFont.SetPointSize( 16 );
+    wxColour titleColour( *wxBLUE );
+    m_plot->AddChartTitle( titleText, titleFont, titleColour );
+
     m_plot->Add( new MyPlotCurve( 0,  -1.5, 1.5 ) );
     m_plot->Add( new MyPlotCurve( 50, -1.5, 1.5 ) );
     wxPlotOnOffCurve *oo = new wxPlotOnOffCurve( 10 );

contrib/src/plot/plot.cpp

@@ -29,6 +29,7 @@
 #include "wx/log.h"
 #include "wx/intl.h"
 #include "wx/dcclient.h"
+#include "wx/stattext.h"
 #endif
 
 #include "wx/plot/plot.h"
@@ -112,6 +113,7 @@ wxPlotEvent::wxPlotEvent( wxEventType commandType, int id )
 IMPLEMENT_ABSTRACT_CLASS(wxPlotCurve, wxObject)
 
 wxPlotCurve::wxPlotCurve( int offsetY, double startY, double endY )
+: m_penNormal(*wxGREY_PEN), m_penSelected(*wxBLACK_PEN)
 {
     m_offsetY = offsetY;
     m_startY = startY;
@@ -415,9 +417,9 @@ void wxPlotArea::OnPaint( wxPaintEvent &WXUNUSED(event) )
             wxPlotCurve *curve = (wxPlotCurve*) node->GetData();
 
             if (curve == m_owner->GetCurrentCurve())
-                dc.SetPen( *wxBLACK_PEN );
+                dc.SetPen( curve->GetPenSelected() );
             else
-                dc.SetPen( *wxGREY_PEN );
+                dc.SetPen( curve->GetPenNormal() );
 
             DrawCurve( &dc, curve, update_x-1, update_x+update_width+2 );
 
@@ -709,7 +711,8 @@ BEGIN_EVENT_TABLE(wxPlotWindow, wxScrolledWindow)
 END_EVENT_TABLE()
 
 wxPlotWindow::wxPlotWindow( wxWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size, int flag )
-        : wxScrolledWindow( parent, id, pos, size, flag, _T("plotcanvas") )
+        : wxScrolledWindow( parent, id, pos, size, flag, _T("plotcanvas") ),
+          m_titleStaticText( NULL )
 {
     m_xUnitsPerValue = 1.0;
     m_xZoom = 1.0;
@@ -745,6 +748,11 @@ wxPlotWindow::wxPlotWindow( wxWindow *parent, wxWindowID id, const wxPoint &pos,
 
     wxBoxSizer *plotsizer = new wxBoxSizer( wxHORIZONTAL );
 
+    //Add sizer to hold the title and plot.
+    //Title to be added later.
+    m_plotAndTitleSizer = new wxBoxSizer( wxVERTICAL );
+    m_plotAndTitleSizer->Add( plotsizer, 1, wxEXPAND | wxTOP, 10 );
+
     if ((GetWindowStyleFlag() & wxPLOT_Y_AXIS) != 0)
     {
         m_yaxis = new wxPlotYAxisArea( this );
@@ -775,7 +783,7 @@ wxPlotWindow::wxPlotWindow( wxWindow *parent, wxWindowID id, const wxPoint &pos,
         m_xaxis = (wxPlotXAxisArea*) NULL;
     }
 
-    mainsizer->Add( plotsizer, 1, wxEXPAND );
+    mainsizer->Add( m_plotAndTitleSizer, 1, wxEXPAND );
 
     SetAutoLayout( true );
     SetSizer( mainsizer );
@@ -981,10 +989,45 @@ void wxPlotWindow::ResetScrollbar()
                    (int)(((max*m_xZoom)/wxPLOT_SCROLL_STEP)+1), 0 );
 }
 
+void wxPlotWindow::AddChartTitle(const wxString& title, wxFont font,
+                                 wxColour colour)
+{
+    m_title = title;
+    m_titleFont = font;
+    m_titleColour = colour;
+    DrawChartTitle();
+}
+
+void wxPlotWindow::DrawChartTitle()
+{
+    if(m_title.size() != 0)
+    {
+        //If it is already added, remove child and delete
+        if(m_titleStaticText)
+        {
+            RemoveChild( m_titleStaticText );
+            m_titleStaticText->Destroy();
+        }
+
+        //Create the text control and set the font, colour
+        m_titleStaticText = new wxStaticText( this, -1, m_title );
+        m_titleStaticText->SetFont( m_titleFont );
+        m_titleStaticText->SetForegroundColour( m_titleColour );
+
+        //Create a sizer for the title. Prepend it to the Plot + Title sizer.
+        wxBoxSizer* titleSizer = new wxBoxSizer( wxHORIZONTAL );
+        titleSizer->Add( m_titleStaticText, 0, wxALIGN_CENTER | wxALL, 10 );
+        m_plotAndTitleSizer->Prepend( titleSizer, 0, wxALIGN_CENTER_HORIZONTAL );
+
+        //Finally, force layout
+        m_plotAndTitleSizer->Layout();
+    }
+}
+
 void wxPlotWindow::RedrawXAxis()
 {
     if (m_xaxis)
-        m_xaxis->Refresh( false );
+        m_xaxis->Refresh( true );
 }
 
 void wxPlotWindow::RedrawYAxis()
@@ -1000,6 +1043,8 @@ void wxPlotWindow::RedrawEverything()
     if (m_yaxis)
         m_yaxis->Refresh( true );
     m_area->Refresh( true );
+
+    DrawChartTitle();
 }
 
 void wxPlotWindow::OnZoomIn( wxCommandEvent& WXUNUSED(event) )