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193 lines
4.0 KiB
193 lines
4.0 KiB
/* ============================================================
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*
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* This file is a part of kipi-plugins project
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* http://www.kipi-plugins.org
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*
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* Date : 2007-11-14
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* Description : a kipi plugin to slide images.
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*
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* Copyright (C) 2007 by Valerio Fuoglio <valerio dot fuoglio at gmail dot com>
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*
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* Parts of this code are based on smoothslidesaver by Carsten Weinhold
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* <carsten dot weinhold at gmx dot de>
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software Foundation;
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* either version 2, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* ============================================================ */
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// C++ includes.
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#include <assert.h>
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// TQt includes.
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#include <tqdatetime.h>
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// KDE includes.
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#include "kbeffect.h"
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// Local includes.
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#include "slideshowkb.h"
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namespace KIPISlideShowPlugin
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{
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// -------------------------------------------------------------------------
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int KBEffect::m_numKBEffectRepeated = 0;
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// -------------------------------------------------------------------------
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KBEffect::KBEffect(SlideShowKB *parent, bool needFadeIn) {
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this->slideWidget = parent;
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this->m_needFadeIn = needFadeIn;
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}
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KBEffect::~KBEffect() {
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}
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void KBEffect::setupNewImage(int img) {
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slideWidget->setupNewImage(img);
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}
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void KBEffect::swapImages() {
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slideWidget->swapImages();
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}
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Image *KBEffect::image(int img) {
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assert(img >= 0 && img < 2);
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return slideWidget->m_image[img];
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}
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KBEffect::Type KBEffect::chooseKBEffect(KBEffect::Type oldType) {
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KBEffect::Type type;
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do {
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type = (rand() < RAND_MAX / 2) ? KBEffect::Fade : KBEffect::Blend;
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} while (type == oldType && m_numKBEffectRepeated >= 1);
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if (type == oldType)
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m_numKBEffectRepeated++;
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else
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m_numKBEffectRepeated = 0;
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return type;
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}
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// -------------------------------------------------------------------------
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FadeKBEffect::FadeKBEffect(SlideShowKB *parent, bool needFadeIn):
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KBEffect(parent, needFadeIn)
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{
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m_img[0] = image(0);
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}
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FadeKBEffect::~FadeKBEffect() {
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}
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bool FadeKBEffect::done() {
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if (m_img[0]->m_pos >= 1.0) {
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setupNewImage(0);
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return true;
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}
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return false;
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}
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void FadeKBEffect::advanceTime(float step) {
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m_img[0]->m_pos += step;
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if (m_img[0]->m_pos >= 1.0)
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m_img[0]->m_pos = 1.0;
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if (m_needFadeIn && m_img[0]->m_pos < 0.1)
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m_img[0]->m_opacity = m_img[0]->m_pos * 10;
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else if (m_img[0]->m_pos > 0.9)
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m_img[0]->m_opacity = (1.0 - m_img[0]->m_pos) * 10;
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else
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m_img[0]->m_opacity = 1.0;
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}
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// -------------------------------------------------------------------------
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BlendKBEffect::BlendKBEffect(SlideShowKB *parent, bool needFadeIn):
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KBEffect(parent, needFadeIn)
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{
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m_img[0] = image(0);
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m_img[1] = 0;
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}
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BlendKBEffect::~BlendKBEffect() {
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}
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bool BlendKBEffect::done() {
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if (m_img[0]->m_pos >= 1.0) {
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m_img[0]->m_paint = false;
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swapImages();
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return true;
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}
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return false;
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}
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void BlendKBEffect::advanceTime(float step) {
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m_img[0]->m_pos += step;
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if (m_img[0]->m_pos >= 1.0)
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m_img[0]->m_pos = 1.0;
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if (m_img[1])
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m_img[1]->m_pos += step;
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if (m_needFadeIn && m_img[0]->m_pos < 0.1)
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m_img[0]->m_opacity = m_img[0]->m_pos * 10;
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else if (m_img[0]->m_pos > 0.9) {
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m_img[0]->m_opacity = (1.0 - m_img[0]->m_pos) * 10;
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if (m_img[1] == 0) {
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setupNewImage(1);
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m_img[1] = image(1);
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m_img[1]->m_opacity = 1.0;
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}
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} else
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m_img[0]->m_opacity = 1.0;
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}
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} // NameSpace KIPISlideShowPlugin
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