rviz: splash_screen.cpp Source File

00001 /*
00002  * Copyright (c) 2009, Willow Garage, Inc.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *
00008  *     * Redistributions of source code must retain the above copyright
00009  *       notice, this list of conditions and the following disclaimer.
00010  *     * Redistributions in binary form must reproduce the above copyright
00011  *       notice, this list of conditions and the following disclaimer in the
00012  *       documentation and/or other materials provided with the distribution.
00013  *     * Neither the name of the Willow Garage, Inc. nor the names of its
00014  *       contributors may be used to endorse or promote products derived from
00015  *       this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00021  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00027  * POSSIBILITY OF SUCH DAMAGE.
00028  */
00029 
00030 #include "splash_screen.h"
00031 
00032 #include <wx/dcclient.h>
00033 
00034 #define TEXT_AREA_HEIGHT 16
00035 
00036 namespace rviz
00037 {
00038 
00039 SplashScreen::SplashScreen(wxWindow* parent, const wxBitmap& background)
00040 : wxFrame(0, wxID_ANY, wxT(""), wxDefaultPosition, wxDefaultSize, wxFRAME_NO_TASKBAR|wxFRAME_FLOAT_ON_PARENT)
00041 , background_(background)
00042 {
00043   Connect(wxEVT_PAINT, wxPaintEventHandler(SplashScreen::onPaint), 0, this);
00044 
00045   wxSize size = wxSize(background_.GetWidth(), background_.GetHeight());
00046   size.SetHeight(size.GetHeight() + TEXT_AREA_HEIGHT);
00047   SetSize(size);
00048 
00049   wxSize display_size = wxGetDisplaySize();
00050   SetPosition(wxPoint(display_size.GetWidth()/2 - size.GetWidth()/2, display_size.GetHeight()/2 - size.GetHeight()/2));
00051 }
00052 
00053 SplashScreen::~SplashScreen()
00054 {
00055 
00056 }
00057 
00058 void SplashScreen::setState(const std::string& state)
00059 {
00060   state_ = state;
00061   Refresh();
00062 
00063   wxSafeYield(this, true);
00064 }
00065 
00066 void SplashScreen::onPaint(wxPaintEvent& evt)
00067 {
00068   wxPaintDC dc(this);
00069 
00070   wxSize text_size = dc.GetTextExtent(wxString::FromAscii(state_.c_str()));
00071 
00072   dc.DrawBitmap(background_, 0, 0);
00073   dc.SetBrush(*wxWHITE_BRUSH);
00074   dc.DrawRectangle(0, background_.GetHeight(), background_.GetWidth(), TEXT_AREA_HEIGHT);
00075   dc.DrawText(wxString::FromAscii(state_.c_str()), 4, background_.GetHeight() + (TEXT_AREA_HEIGHT/2) - (text_size.GetHeight()/2));
00076 }
00077 
00078 }