ColorPickerControl.cpp

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/*
 *  Roadnav
 *  ColorPickerControl.cpp
 *
 *  Copyright (c) 2004 - 2008 Richard L. Lynch <rllynch@users.sourceforge.net>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of version 2 of the GNU General Public License
 *  as published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
//////////////////////////////////////////////////////////////////////////////
/// \file
///
/// This file contains a control that allows the user to select a color. 
///
/// The selected color is shown in the control.
///
//////////////////////////////////////////////////////////////////////////////

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#ifdef _MSC_VER
#pragma warning(disable: 4786)
#endif

#include "ColorPickerControl.h"

#include <wx/wx.h>
#include <wx/colordlg.h>

//////////////////////////////////////////////////////////////////////////////
///
/// MapControl events
///
//////////////////////////////////////////////////////////////////////////////
BEGIN_EVENT_TABLE(ColorPickerControl, wxControl)
    EVT_PAINT(ColorPickerControl::OnPaint)
    EVT_LEFT_UP(ColorPickerControl::OnLeftUp)
END_EVENT_TABLE()

IMPLEMENT_DYNAMIC_CLASS(ColorPickerControl, wxControl);

//////////////////////////////////////////////////////////////////////////////
///
/// \brief ColorPickerControl constructor
///
//////////////////////////////////////////////////////////////////////////////
ColorPickerControl::ColorPickerControl()
{
}

//////////////////////////////////////////////////////////////////////////////
///
/// \brief ColorPickerControl constructor
///
//////////////////////////////////////////////////////////////////////////////
ColorPickerControl::ColorPickerControl(wxWindow* parent, wxWindowID id, wxPoint pt, wxSize sz)
{
    Create(parent, id, pt, sz, wxSUNKEN_BORDER | wxTAB_TRAVERSAL);
    
    m_clrSelection.Set(0, 0, 0);
}

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Repaint the control
///
//////////////////////////////////////////////////////////////////////////////
void ColorPickerControl::OnPaint(wxPaintEvent& event)
{
    wxPaintDC dc(this);
    wxRect rect;
    wxBrush brOld;
    wxPen penOld;
    
    if (IsEnabled())
    {
        wxBrush brThis(m_clrSelection, wxSOLID);
        wxPen penThis(m_clrSelection, 1, wxSOLID);
        
        rect = GetClientRect();
        
        brOld = dc.GetBrush();
        dc.SetBrush(brThis);
        
        penOld = dc.GetPen();
        dc.SetPen(penThis);
        
        dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height);
    }
    else
    {
        wxBrush brThis(*wxWHITE, wxSOLID);
        wxPen penThis(*wxWHITE, 1, wxSOLID);
        wxPen penRedLine(*wxRED, 2, wxSOLID);
        
        rect = GetClientRect();
        
        brOld = dc.GetBrush();
        dc.SetBrush(brThis);
        
        penOld = dc.GetPen();
        dc.SetPen(penThis);
        
        dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height);
        
        dc.SetPen(penRedLine);
        dc.DrawLine(0, 0, rect.width, rect.height);
    }
    
    dc.SetBrush(brOld);
    dc.SetPen(penOld);
}

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Left mouse button released - user wants to change the color
///
/// When the left mouse button is pressed in the control, a wxColourDialog
/// is shown to let the user pick a new color. The new color is then
/// stored in m_clrSelection, and the parent is notified with a
/// wxEVT_COMMAND_BUTTON_CLICKED event.
///
//////////////////////////////////////////////////////////////////////////////
void ColorPickerControl::OnLeftUp(wxMouseEvent& event)
{
    wxColourDialog dlgColor(this);
    
    dlgColor.GetColourData().SetColour(m_clrSelection);
    
    if (dlgColor.ShowModal() == wxID_OK)
    {
        m_clrSelection = dlgColor.GetColourData().GetColour();
        
        Refresh();

        wxCommandEvent ev(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
    
        GetParent()->AddPendingEvent(ev);
    }
}

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Assign a color to this control and refresh the control so the new
/// color is shown.
///
//////////////////////////////////////////////////////////////////////////////
void ColorPickerControl::SetColor(wxColour clrColor)
{
    m_clrSelection = clrColor;
    
    Refresh();
}

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Retrieve the color selected
///
//////////////////////////////////////////////////////////////////////////////
wxColour ColorPickerControl::GetColor()
{
    return m_clrSelection;
}

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