qxtflowview_p.h File Reference

#include "qxtflowview.h"
#include <QApplication>
#include <QCache>
#include <QHash>
#include <QImage>
#include <QKeyEvent>
#include <QPainter>
#include <QPixmap>
#include <QTimer>
#include <QVector>
#include <QWidget>
#include <QAbstractItemModel>
#include <QPersistentModelIndex>
#include <QList>

Go to the source code of this file.

Classes
struct	SlideInfo
class	QxtFlowViewState
class	QxtFlowViewAnimator
class	QxtFlowViewAbstractRenderer
class	QxtFlowViewSoftwareRenderer
class	QxtFlowViewPrivate
Defines
#define	PICTUREFLOW_QT4
#define	PFREAL_SHIFT   10
#define	PFREAL_ONE   (1 << PFREAL_SHIFT)
#define	IANGLE_MAX   1024
#define	IANGLE_MASK   1023
Typedefs
typedef long	PFreal
Functions
PFreal	fmul (PFreal a, PFreal b)
PFreal	fdiv (PFreal num, PFreal den)
PFreal	fsin (int iangle)
PFreal	fcos (int iangle)

---

Define Documentation

#define IANGLE_MASK   1023

Definition at line 79 of file qxtflowview_p.h.

Referenced by fsin().

#define IANGLE_MAX   1024

Definition at line 78 of file qxtflowview_p.h.

Referenced by fcos(), fsin(), QxtFlowViewState::reposition(), and QxtFlowViewAnimator::update().

#define PFREAL_ONE   (1 << PFREAL_SHIFT)

Definition at line 76 of file qxtflowview_p.h.

Referenced by QxtFlowViewSoftwareRenderer::init(), QxtFlowViewState::reposition(), QxtFlowViewState::reset(), and QxtFlowViewAnimator::update().

#define PFREAL_SHIFT   10

Definition at line 75 of file qxtflowview_p.h.

Referenced by fdiv(), and fmul().

#define PICTUREFLOW_QT4

Definition at line 56 of file qxtflowview_p.h.

---

Typedef Documentation

typedef long PFreal

Definition at line 74 of file qxtflowview_p.h.

---

Function Documentation

PFreal fcos

(

int

iangle )

[inline]

Definition at line 122 of file qxtflowview_p.h.

References fsin(), and IANGLE_MAX.

Referenced by QxtFlowViewState::reposition().

{
    return fsin(iangle + (IANGLE_MAX >> 2));
}

PFreal fdiv	(	PFreal	num,
		PFreal	den
	)		[inline]

Definition at line 86 of file qxtflowview_p.h.

References PFREAL_SHIFT.

{
    long long p = (long long)(num) << (PFREAL_SHIFT * 2);
    long long q = p / (long long)den;
    long long r = q >> PFREAL_SHIFT;

    return r;
}

PFreal fmul	(	PFreal	a,
		PFreal	b
	)		[inline]

Definition at line 81 of file qxtflowview_p.h.

References PFREAL_SHIFT.

Referenced by QxtFlowViewAnimator::update().

{
    return ((long long)(a))*((long long)(b)) >> PFREAL_SHIFT;
}

PFreal fsin

(

int

iangle )

[inline]

Definition at line 95 of file qxtflowview_p.h.

References IANGLE_MASK, and IANGLE_MAX.

Referenced by fcos(), QxtFlowViewState::reposition(), and QxtFlowViewAnimator::update().

{
    // warning: regenerate the table if IANGLE_MAX and PFREAL_SHIFT are changed!
    static const PFreal tab[] =
    {
        3,    103,    202,    300,    394,    485,    571,    652,
        726,    793,    853,    904,    947,    980,   1004,   1019,
        1023,   1018,   1003,    978,    944,    901,    849,    789,
        721,    647,    566,    479,    388,    294,    196,     97,
        -4,   -104,   -203,   -301,   -395,   -486,   -572,   -653,
        -727,   -794,   -854,   -905,   -948,   -981,  -1005,  -1020,
        -1024,  -1019,  -1004,   -979,   -945,   -902,   -850,   -790,
        -722,   -648,   -567,   -480,   -389,   -295,   -197,    -98,
        3
    };

    while (iangle < 0)
        iangle += IANGLE_MAX;
    iangle &= IANGLE_MASK;

    int i = (iangle >> 4);
    PFreal p = tab[i];
    PFreal q = tab[(i+1)];
    PFreal g = (q - p);
    return p + g * (iangle - i*16) / 16;
}