colorpickercontrol.cpp

Powerful and Portable GPS application -- support Linux, Windows, Windows CE GPS navigation and Map m

/*
 *  Roadnav
 *  ColorPickerControl.cpp
 *
 *  Copyright (c) 2004 - 2007 Richard L. Lynch <[e-mail]>
 *
 *  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;
}