presentationwidget.cpp.svn-base

okular

                        xPosition = xNext;
                    }
                }
                else
                {
                    int xPosition = m_width / 2;
                    for ( int i = 0; i < steps; i++ )
                    {
                        int xNext = ((steps - (i + 1)) * m_width) / (2 * steps);
                        m_transitionRects.push_back( QRect( xNext, 0, xPosition - xNext, m_height ) );
                        m_transitionRects.push_back( QRect( m_width - xPosition, 0, xPosition - xNext, m_height ) );
                        xPosition = xNext;
                    }
                }
            }
            else
            {
                if ( isInward )
                {
                    int yPosition = 0;
                    for ( int i = 0; i < steps; i++ )
                    {
                        int yNext = ((i + 1) * m_height) / (2 * steps);
                        m_transitionRects.push_back( QRect( 0, yPosition, m_width, yNext - yPosition ) );
                        m_transitionRects.push_back( QRect( 0, m_height - yNext, m_width, yNext - yPosition ) );
                        yPosition = yNext;
                    }
                }
                else
                {
                    int yPosition = m_height / 2;
                    for ( int i = 0; i < steps; i++ )
                    {
                        int yNext = ((steps - (i + 1)) * m_height) / (2 * steps);
                        m_transitionRects.push_back( QRect( 0, yNext, m_width, yPosition - yNext ) );
                        m_transitionRects.push_back( QRect( 0, m_height - yPosition, m_width, yPosition - yNext ) );
                        yPosition = yNext;
                    }
                }
            }
            m_transitionMul = 2;
            m_transitionDelay = (int)( (totalTime * 1000) / steps );
        } break;

            // blinds: horizontal(l-to-r) / vertical(t-to-b)
        case KPDFPageTransition::Blinds:
        {
            const int blinds = isHorizontal ? 8 : 6;
            const int steps = m_width / (4 * blinds);
            if ( isHorizontal )
            {
                int xPosition[ 8 ];
                for ( int b = 0; b < blinds; b++ )
                    xPosition[ b ] = (b * m_width) / blinds;

                for ( int i = 0; i < steps; i++ )
                {
                    int stepOffset = (int)( ((float)i * (float)m_width) / ((float)blinds * (float)steps) );
                    for ( int b = 0; b < blinds; b++ )
                    {
                        m_transitionRects.push_back( QRect( xPosition[ b ], 0, stepOffset, m_height ) );
                        xPosition[ b ] = stepOffset + (b * m_width) / blinds;
                    }
                }
            }
            else
            {
                int yPosition[ 6 ];
                for ( int b = 0; b < blinds; b++ )
                    yPosition[ b ] = (b * m_height) / blinds;

                for ( int i = 0; i < steps; i++ )
                {
                    int stepOffset = (int)( ((float)i * (float)m_height) / ((float)blinds * (float)steps) );
                    for ( int b = 0; b < blinds; b++ )
                    {
                        m_transitionRects.push_back( QRect( 0, yPosition[ b ], m_width, stepOffset ) );
                        yPosition[ b ] = stepOffset + (b * m_height) / blinds;
                    }
                }
            }
            m_transitionMul = blinds;
            m_transitionDelay = (int)( (totalTime * 1000) / steps );
        } break;

            // box: inward / outward
        case KPDFPageTransition::Box:
        {
            const int steps = m_width / 10;
            if ( isInward )
            {
                int L = 0, T = 0, R = m_width, B = m_height;
                for ( int i = 0; i < steps; i++ )
                {
                    // compure shrinked box coords
                    int newL = ((i + 1) * m_width) / (2 * steps);
                    int newT = ((i + 1) * m_height) / (2 * steps);
                    int newR = m_width - newL;
                    int newB = m_height - newT;
                    // add left, right, topcenter, bottomcenter rects
                    m_transitionRects.push_back( QRect( L, T, newL - L, B - T ) );
                    m_transitionRects.push_back( QRect( newR, T, R - newR, B - T ) );
                    m_transitionRects.push_back( QRect( newL, T, newR - newL, newT - T ) );
                    m_transitionRects.push_back( QRect( newL, newB, newR - newL, B - newB ) );
                    L = newL; T = newT; R = newR, B = newB;
                }
            }
            else
            {
                int L = m_width / 2, T = m_height / 2, R = L, B = T;
                for ( int i = 0; i < steps; i++ )
                {
                    // compure shrinked box coords
                    int newL = ((steps - (i + 1)) * m_width) / (2 * steps);
                    int newT = ((steps - (i + 1)) * m_height) / (2 * steps);
                    int newR = m_width - newL;
                    int newB = m_height - newT;
                    // add left, right, topcenter, bottomcenter rects
                    m_transitionRects.push_back( QRect( newL, newT, L - newL, newB - newT ) );
                    m_transitionRects.push_back( QRect( R, newT, newR - R, newB - newT ) );
                    m_transitionRects.push_back( QRect( L, newT, R - L, T - newT ) );
                    m_transitionRects.push_back( QRect( L, B, R - L, newB - B ) );
                    L = newL; T = newT; R = newR, B = newB;
                }
            }
            m_transitionMul = 4;
            m_transitionDelay = (int)( (totalTime * 1000) / steps );
        } break;

            // wipe: implemented for 4 canonical angles
        case KPDFPageTransition::Wipe:
        {
            const int angle = transition->angle();
            const int steps = (angle == 0) || (angle == 180) ? m_width / 8 : m_height / 8;
            if ( angle == 0 )
            {
                int xPosition = 0;
                for ( int i = 0; i < steps; i++ )
                {
                    int xNext = ((i + 1) * m_width) / steps;
                    m_transitionRects.push_back( QRect( xPosition, 0, xNext - xPosition, m_height ) );
                    xPosition = xNext;
                }
            }
            else if ( angle == 90 )
            {
                int yPosition = m_height;
                for ( int i = 0; i < steps; i++ )
                {
                    int yNext = ((steps - (i + 1)) * m_height) / steps;
                    m_transitionRects.push_back( QRect( 0, yNext, m_width, yPosition - yNext ) );
                    yPosition = yNext;
                }
            }
            else if ( angle == 180 )
            {
                int xPosition = m_width;
                for ( int i = 0; i < steps; i++ )
                {
                    int xNext = ((steps - (i + 1)) * m_width) / steps;
                    m_transitionRects.push_back( QRect( xNext, 0, xPosition - xNext, m_height ) );
                    xPosition = xNext;
                }
            }
            else if ( angle == 270 )
            {
                int yPosition = 0;
                for ( int i = 0; i < steps; i++ )
                {
                    int yNext = ((i + 1) * m_height) / steps;
                    m_transitionRects.push_back( QRect( 0, yPosition, m_width, yNext - yPosition ) );
                    yPosition = yNext;
                }
            }
            else
            {
                update();
                return;
            }
            m_transitionMul = 1;
            m_transitionDelay = (int)( (totalTime * 1000) / steps );
        } break;

            // dissolve: replace 'random' rects
        case KPDFPageTransition::Dissolve:
        {
            const int gridXsteps = 50;
            const int gridYsteps = 38;
            const int steps = gridXsteps * gridYsteps;
            int oldX = 0;
            int oldY = 0;
            // create a grid of gridXstep by gridYstep QRects
            for ( int y = 0; y < gridYsteps; y++ )
            {
                int newY = (int)( m_height * ((float)(y+1) / (float)gridYsteps) );
                for ( int x = 0; x < gridXsteps; x++ )
                {
                    int newX = (int)( m_width * ((float)(x+1) / (float)gridXsteps) );
                    m_transitionRects.push_back( QRect( oldX, oldY, newX - oldX, newY - oldY ) );
                    oldX = newX;
                }
                oldX = 0;
                oldY = newY;
            }
            // randomize the grid
            for ( int i = 0; i < steps; i++ )
            {
                int n1 = (int)(steps * drand48());
                int n2 = (int)(steps * drand48());
                // swap items if index differs
                if ( n1 != n2 )
                {
                    QRect r = m_transitionRects[ n2 ];
                    m_transitionRects[ n2 ] = m_transitionRects[ n1 ];
                    m_transitionRects[ n1 ] = r;
                }
            }
            // set global transition parameters
            m_transitionMul = 40;
            m_transitionDelay = (int)( (m_transitionMul * 1000 * totalTime) / steps );
        } break;

            // glitter: similar to dissolve but has a direction
        case KPDFPageTransition::Glitter:
        {
            const int gridXsteps = 50;
            const int gridYsteps = 38;
            const int steps = gridXsteps * gridYsteps;
            const int angle = transition->angle();
            // generate boxes using a given direction
            if ( angle == 90 )
            {
                int yPosition = m_height;
                for ( int i = 0; i < gridYsteps; i++ )
                {
                    int yNext = ((gridYsteps - (i + 1)) * m_height) / gridYsteps;
                    int xPosition = 0;
                    for ( int j = 0; j < gridXsteps; j++ )
                    {
                        int xNext = ((j + 1) * m_width) / gridXsteps;
                        m_transitionRects.push_back( QRect( xPosition, yNext, xNext - xPosition, yPosition - yNext ) );
                        xPosition = xNext;
                    }
                    yPosition = yNext;
                }
            }
            else if ( angle == 180 )
            {
                int xPosition = m_width;
                for ( int i = 0; i < gridXsteps; i++ )
                {
                    int xNext = ((gridXsteps - (i + 1)) * m_width) / gridXsteps;
                    int yPosition = 0;
                    for ( int j = 0; j < gridYsteps; j++ )
                    {
                        int yNext = ((j + 1) * m_height) / gridYsteps;
                        m_transitionRects.push_back( QRect( xNext, yPosition, xPosition - xNext, yNext - yPosition ) );
                        yPosition = yNext;
                    }
                    xPosition = xNext;
                }
            }
            else if ( angle == 270 )
            {
                int yPosition = 0;
                for ( int i = 0; i < gridYsteps; i++ )
                {
                    int yNext = ((i + 1) * m_height) / gridYsteps;
                    int xPosition = 0;
                    for ( int j = 0; j < gridXsteps; j++ )
                    {
                        int xNext = ((j + 1) * m_width) / gridXsteps;
                        m_transitionRects.push_back( QRect( xPosition, yPosition, xNext - xPosition, yNext - yPosition ) );
                        xPosition = xNext;
                    }
                    yPosition = yNext;
                }
            }
            else // if angle is 0 or 315
            {
                int xPosition = 0;
                for ( int i = 0; i < gridXsteps; i++ )
                {
                    int xNext = ((i + 1) * m_width) / gridXsteps;
                    int yPosition = 0;
                    for ( int j = 0; j < gridYsteps; j++ )
                    {
                        int yNext = ((j + 1) * m_height) / gridYsteps;
                        m_transitionRects.push_back( QRect( xPosition, yPosition, xNext - xPosition, yNext - yPosition ) );
                        yPosition = yNext;
                    }
                    xPosition = xNext;
                }
            }
            // add a 'glitter' (1 over 10 pieces is randomized)
            int randomSteps = steps / 20;
            for ( int i = 0; i < randomSteps; i++ )
            {
                int n1 = (int)(steps * drand48());
                int n2 = (int)(steps * drand48());
                // swap items if index differs
                if ( n1 != n2 )
                {
                    QRect r = m_transitionRects[ n2 ];
                    m_transitionRects[ n2 ] = m_transitionRects[ n1 ];
                    m_transitionRects[ n1 ] = r;
                }
            }
            // set global transition parameters
            m_transitionMul = (angle == 90) || (angle == 270) ? gridYsteps : gridXsteps;
            m_transitionMul /= 2;
            m_transitionDelay = (int)( (m_transitionMul * 1000 * totalTime) / steps );
        } break;

        // implement missing transitions (a binary raster engine needed here)
        case KPDFPageTransition::Fly:

        case KPDFPageTransition::Push:

        case KPDFPageTransition::Cover:

        case KPDFPageTransition::Uncover:

        case KPDFPageTransition::Fade:

        default:
            update();
            return;
    }

    // send the first start to the timer
    m_transitionTimer->start( 0 );
}


#include "presentationwidget.moc"