116 lines
3.8 KiB
C++
Executable File
116 lines
3.8 KiB
C++
Executable File
/******************************************************************************\
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* Copyright (c) 2004-2009
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*
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* Author(s):
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* Volker Fischer
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*
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* Description:
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* Implements a multi color LED bar
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*
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******************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#include "multicolorledbar.h"
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/* Implementation *************************************************************/
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CMultiColorLEDBar::CMultiColorLEDBar ( QWidget* parent, Qt::WindowFlags f )
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: QFrame ( parent, f ),
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BitmCubeRoundGrey ( QString::fromUtf8 ( ":/png/LEDs/res/VLEDGreySmall.png" ) ),
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BitmCubeRoundGreen ( QString::fromUtf8 ( ":/png/LEDs/res/VLEDGreenSmall.png" ) ),
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BitmCubeRoundYellow ( QString::fromUtf8 ( ":/png/LEDs/res/VLEDYellowSmall.png" ) ),
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BitmCubeRoundRed ( QString::fromUtf8 ( ":/png/LEDs/res/VLEDRedSmall.png" ) )
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{
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// set total number of LEDs
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iNumLEDs = NUM_STEPS_INP_LEV_METER;
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// create layout and set spacing to zero
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pMainLayout = new QHBoxLayout ( this );
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pMainLayout->setAlignment ( Qt::AlignVCenter );
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pMainLayout->setSpacing ( 0 );
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// TEST helps finding the problem with margin on left and right
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//setFrameShape ( QFrame::StyledPanel );
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//setFrameShadow ( QFrame::Sunken );
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// create LEDs
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vecpLEDs.Init ( iNumLEDs );
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for ( int i = 0; i < iNumLEDs; i++ )
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{
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// create LED label
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vecpLEDs[i] = new QLabel ( "", parent );
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// add LED to layout
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pMainLayout->addWidget ( vecpLEDs[i] );
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// set initial bitmap
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vecpLEDs[i]->setPixmap ( BitmCubeRoundGrey );
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// bitmap defines minimum size of the label
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vecpLEDs[i]->setMinimumSize (
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BitmCubeRoundGrey.width(), BitmCubeRoundGrey.height() );
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}
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}
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void CMultiColorLEDBar::setValue ( const int value )
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{
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// TODO speed optimiation: only change bitmaps of LEDs which
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// actually have to be changed
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// update state of all LEDs for current level value
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for ( int i = 0; i < iNumLEDs; i++ )
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{
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// set active if value is above current LED index
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SetLED ( i, i < value );
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}
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}
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void CMultiColorLEDBar::SetLED ( const int iLEDIdx, const bool bActive )
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{
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if ( bActive )
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{
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// check which color we should use (green, yellow or red)
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if ( iLEDIdx < YELLOW_BOUND_INP_LEV_METER )
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{
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// green region
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vecpLEDs[iLEDIdx]->setPixmap ( BitmCubeRoundGreen );
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}
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else
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{
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if ( iLEDIdx < RED_BOUND_INP_LEV_METER )
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{
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// yellow region
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vecpLEDs[iLEDIdx]->setPixmap ( BitmCubeRoundYellow );
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}
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else
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{
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// red region
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vecpLEDs[iLEDIdx]->setPixmap ( BitmCubeRoundRed );
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}
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}
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}
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else
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{
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// we use grey LED for inactive state
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vecpLEDs[iLEDIdx]->setPixmap ( BitmCubeRoundGrey );
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}
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}
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