/*****************************************************************************
* tooltip.cpp
*****************************************************************************
* Copyright (C) 2003 the VideoLAN team
*
* Authors: Cyril Deguet <asmax@via.ecp.fr>
* Olivier Teulière <ipkiss@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include "tooltip.hpp"
#include "generic_bitmap.hpp"
#include "generic_font.hpp"
#include "os_factory.hpp"
#include "os_graphics.hpp"
#include "os_tooltip.hpp"
#include "os_timer.hpp"
#include "var_manager.hpp"
#include "../utils/ustring.hpp"
Tooltip::Tooltip( intf_thread_t *pIntf, const GenericFont &rFont, int delay ):
SkinObject( pIntf ), m_rFont( rFont ), m_delay( delay ), m_pImage( NULL ),
m_xPos( -1 ), m_yPos( -1 ), m_cmdShow( this )
{
OSFactory *pOsFactory = OSFactory::instance( pIntf );
m_pTimer = pOsFactory->createOSTimer( m_cmdShow );
m_pOsTooltip = pOsFactory->createOSTooltip();
// Observe the tooltip text variable
VarManager::instance( pIntf )->getTooltipText().addObserver( this );
}
Tooltip::~Tooltip()
{
VarManager::instance( getIntf() )->getTooltipText().delObserver( this );
delete m_pTimer;
delete m_pOsTooltip;
delete m_pImage;
}
void Tooltip::show()
{
// (Re)start the timer
m_pTimer->start( m_delay, true );
}
void Tooltip::hide()
{
m_pTimer->stop();
m_pOsTooltip->hide();
m_xPos = -1;
m_yPos = -1;
}
void Tooltip::onUpdate( Subject<VarText> &rVariable, void *arg )
{
(void)arg;
// Redisplay the tooltip
displayText( ((VarText&)rVariable).get() );
}
void Tooltip::displayText( const UString &rText )
{
// Rebuild the image
makeImage( rText );
// Redraw the window if it is already visible
if( m_xPos != -1 )
{
m_pOsTooltip->show( m_xPos, m_yPos, *m_pImage );
}
}
void Tooltip::makeImage( const UString &rText )
{
// Render the text on a bitmap
GenericBitmap *pBmpTip = m_rFont.drawString( rText, 0 );
if( !pBmpTip )
{
return;
}
int w = pBmpTip->getWidth() + 10;
int h = m_rFont.getSize() + 8;
// Create the image of the tooltip
delete m_pImage;
m_pImage = OSFactory::instance( getIntf() )->createOSGraphics( w, h );
m_pImage->fillRect( 0, 0, w, h, 0xffffd0 );
m_pImage->drawRect( 0, 0, w, h, 0x000000 );
m_pImage->drawBitmap( *pBmpTip, 0, 0, 5, 5, -1, -1, true );
delete pBmpTip;
}
void Tooltip::CmdShow::execute()
{
if( m_pParent->m_pImage )
{
if( m_pParent->m_xPos == -1 )
{
// Get the mouse coordinates and the image size
OSFactory *pOsFactory = OSFactory::instance( m_pParent->getIntf() );
int x, y;
pOsFactory->getMousePos( x, y );
int scrWidth = pOsFactory->getScreenWidth();
int scrHeight = pOsFactory->getScreenHeight();
int w = m_pParent->m_pImage->getWidth();
int h = m_pParent->m_pImage->getHeight();
// Compute the position of the tooltip
x -= (w / 2 + 4);
y += (h + 5);
if( x + w > scrWidth )
x -= (x + w - scrWidth);
else if( x < 0 )
x = 0;
if( y + h > scrHeight )
y -= (2 * h + 20);
m_pParent->m_xPos = x;
m_pParent->m_yPos = y;
}
// Show the tooltip window
m_pParent->m_pOsTooltip->show( m_pParent->m_xPos, m_pParent->m_yPos,
*(m_pParent->m_pImage) );
}
}
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