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/* ============================================================
*
* This file is a part of kipi-plugins project
* http://www.kipi-plugins.org
*
* Date : 2007-11-14
* Description : a kipi plugin to slide images.
*
* Copyright (C) 2007 by Valerio Fuoglio <valerio dot fuoglio at gmail dot com>
*
* Parts of this code are based on smoothslidesaver by Carsten Weinhold
* <carsten dot weinhold at gmx dot de>
*
* 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, 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.
*
* ============================================================ */
// C++ includes.
#include <assert.h>
// TQt includes.
#include <tqdatetime.h>
// KDE includes.
#include "kbeffect.h"
// Local includes.
#include "slideshowkb.h"
namespace KIPISlideShowPlugin
{
// -------------------------------------------------------------------------
int KBEffect::m_numKBEffectRepeated = 0;
// -------------------------------------------------------------------------
KBEffect::KBEffect(SlideShowKB *parent, bool needFadeIn) {
this->slideWidget = parent;
this->m_needFadeIn = needFadeIn;
}
KBEffect::~KBEffect() {
}
void KBEffect::setupNewImage(int img) {
slideWidget->setupNewImage(img);
}
void KBEffect::swapImages() {
slideWidget->swapImages();
}
Image *KBEffect::image(int img) {
assert(img >= 0 && img < 2);
return slideWidget->m_image[img];
}
KBEffect::Type KBEffect::chooseKBEffect(KBEffect::Type oldType) {
KBEffect::Type type;
do {
type = (rand() < RAND_MAX / 2) ? KBEffect::Fade : KBEffect::Blend;
} while (type == oldType && m_numKBEffectRepeated >= 1);
if (type == oldType)
m_numKBEffectRepeated++;
else
m_numKBEffectRepeated = 0;
return type;
}
// -------------------------------------------------------------------------
FadeKBEffect::FadeKBEffect(SlideShowKB *parent, bool needFadeIn):
KBEffect(parent, needFadeIn)
{
m_img[0] = image(0);
}
FadeKBEffect::~FadeKBEffect() {
}
bool FadeKBEffect::done() {
if (m_img[0]->m_pos >= 1.0) {
setupNewImage(0);
return true;
}
return false;
}
void FadeKBEffect::advanceTime(float step) {
m_img[0]->m_pos += step;
if (m_img[0]->m_pos >= 1.0)
m_img[0]->m_pos = 1.0;
if (m_needFadeIn && m_img[0]->m_pos < 0.1)
m_img[0]->m_opacity = m_img[0]->m_pos * 10;
else if (m_img[0]->m_pos > 0.9)
m_img[0]->m_opacity = (1.0 - m_img[0]->m_pos) * 10;
else
m_img[0]->m_opacity = 1.0;
}
// -------------------------------------------------------------------------
BlendKBEffect::BlendKBEffect(SlideShowKB *parent, bool needFadeIn):
KBEffect(parent, needFadeIn)
{
m_img[0] = image(0);
m_img[1] = 0;
}
BlendKBEffect::~BlendKBEffect() {
}
bool BlendKBEffect::done() {
if (m_img[0]->m_pos >= 1.0) {
m_img[0]->m_paint = false;
swapImages();
return true;
}
return false;
}
void BlendKBEffect::advanceTime(float step) {
m_img[0]->m_pos += step;
if (m_img[0]->m_pos >= 1.0)
m_img[0]->m_pos = 1.0;
if (m_img[1])
m_img[1]->m_pos += step;
if (m_needFadeIn && m_img[0]->m_pos < 0.1)
m_img[0]->m_opacity = m_img[0]->m_pos * 10;
else if (m_img[0]->m_pos > 0.9) {
m_img[0]->m_opacity = (1.0 - m_img[0]->m_pos) * 10;
if (m_img[1] == 0) {
setupNewImage(1);
m_img[1] = image(1);
m_img[1]->m_opacity = 1.0;
}
} else
m_img[0]->m_opacity = 1.0;
}
} // NameSpace KIPISlideShowPlugin
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