author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 04 May 2010 12:39:35 +0300 | |
changeset 0 | 1450b09d0cfd |
child 3 | 0954f5dd2cd0 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Gesture recognition utilities |
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* |
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*/ |
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#include "qstmutils.h" |
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#include "qstmgesturedefs.h" |
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using namespace qstmUiEventEngine; |
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inline int QStm_Utils::longerEdge( const QSize& size ) |
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{ |
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return MAX( size.height(), size.width() ); |
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} |
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QRect QStm_Utils::toleranceRectMm( const QPoint& centerPoint, int size_mm ) |
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{ |
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long toleranceLength = mm2Pixels(size_mm) / 2; |
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return toleranceRectPx(centerPoint, toleranceLength); |
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} |
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QRect QStm_Utils::toleranceRectPx( const QPoint& centerPoint, int size_px ) |
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{ |
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QRect toleranceRect( QPoint(0,0), QSize(size_px, size_px) ); |
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// grow by the tolerance length, while keeping the center point |
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toleranceRect.moveCenter(centerPoint); |
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return toleranceRect; |
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} |
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long QStm_Utils::mm2Pixels(long mm) |
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{ |
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//return Twips2Pixels(mm * KTwipsInMm); |
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return mm * QApplication::desktop()->height() / QApplication::desktop()->heightMM(); |
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} |
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long QStm_Utils::inches2Pixels(double inches) |
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{ |
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//return Twips2Pixels(inches * KTwipsInInch); |
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return inches * 25.4 * QApplication::desktop()->height() / QApplication::desktop()->heightMM(); |
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} |
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int QStm_Utils::distance(const QPoint& p1, const QPoint& p2) |
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{ |
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/* |
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double d = dx * dx + dy * dy; |
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double dist ; |
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Math::Sqrt(dist, d) ; |
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return dist; |
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*/ |
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QPoint diff = p1 - p2; |
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int x = diff.x(); |
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int y = diff.y(); |
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if(x<0) x=-x; |
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if(y<0) y=-y; |
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if(x < y) { |
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int t = x; |
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x = y; |
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y = t; // ensures that x >= y |
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} |
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int dist = (y < ((13107 * x)>>15)) ? // * (.4) |
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(x + ((y * 6310)>>15)) : // * (.192582403) |
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(((x * 27926)>>15) // * (.852245894) |
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+ ((y * 18414)>>15)); // * (.561967668) |
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return dist; |
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} |
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qreal QStm_Utils::distanceF(const QPoint& p1, const QPoint& p2) |
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{ |
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QPoint diff = p1 - p2; |
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double dist; |
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SQRT(dist, ((qreal)(diff.x() * diff.x() + diff.y() * diff.y()))) ; |
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return dist; |
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} |
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