From dfb9c76738bb68e235114c5ad43dbd26a59b98ab Mon Sep 17 00:00:00 2001
From: kergoth <kergoth>
Date: Thu, 06 Jun 2002 23:31:00 +0000
Subject: Initial revision

---
(limited to 'core/pim/datebook/layoutmanager.cpp')

diff --git a/core/pim/datebook/layoutmanager.cpp b/core/pim/datebook/layoutmanager.cpp
new file mode 100644
index 0000000..23058ed
--- a/dev/null
+++ b/core/pim/datebook/layoutmanager.cpp
@@ -0,0 +1,177 @@
+/**********************************************************************
+** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
+**
+** This file is part of the Qtopia Environment.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+
+#include "layoutmanager.h"
+
+static const int min_height = 15;
+
+LayoutItem::LayoutItem( const EffectiveEvent e ) : eevent(e) { }
+
+LayoutManager::LayoutManager(int w, int h) : width(w), height(h), maxWidth(w) { }
+
+LayoutManager::~LayoutManager() { }
+
+void LayoutManager::setSize(int w, int h) 
+{
+    height = h;
+    maxWidth = width = w;
+    // with changed, re-init, re-layout items.
+    for (uint i = 0; i < mItems.count(); i++)
+	initializeGeometry(mItems.at(i));
+}
+
+void LayoutManager::setOccurances(QValueList<EffectiveEvent> &events)
+{
+    mItems.clear();
+
+    QValueListIterator<EffectiveEvent> it;
+    for ( it = events.begin(); it != events.end(); ++it ) {
+	addOccurance(*it);
+    }
+    layoutItems(TRUE);
+}
+
+void LayoutManager::addOccurance(EffectiveEvent &event)
+{
+    LayoutItem *i = new LayoutItem(event);
+    initializeGeometry(i);
+    addItem(i);
+}
+
+void LayoutManager::addItem(LayoutItem *i)
+{
+    mItems.resize(mItems.size() + 1);
+    mItems.insert(mItems.size() - 1, i);
+}
+
+void LayoutManager::layoutItems(bool resetMaxWidth)
+{
+    if (resetMaxWidth)
+	maxWidth = width;
+
+    int iCount = mItems.count();
+    int itemWidth = QMIN(width, maxWidth);
+    int n = 1;
+
+    if (width < 1)
+	return;
+    if (iCount < (width/4)) {
+	int i = 0;
+	while (i < iCount) {
+	    LayoutItem *item = mItems.at(i);
+	    int x = 0;
+	    int xp = 0;
+	    QRect geom = item->geometry();
+	    geom.setX( x );
+	    geom.setWidth(itemWidth);
+	    while ( xp < n && intersects(item, geom)) {
+		x += itemWidth;
+		xp++;
+		geom.moveBy(itemWidth, 0);
+	    }
+	    if (xp >= n) {
+		n++;
+		itemWidth = QMIN(width / n, maxWidth);
+		i = 0; // Start again.
+	    } else {
+		item->setGeometry( geom );
+		i++;
+	    }
+	}
+    } else {
+	// alturnate algorithm. // same as above, but just overlap
+	// if fail.
+	itemWidth = 4;
+	n = width / itemWidth;
+	int i = 0;
+	int rovingXp = 0;
+	while (i < iCount) {
+	    LayoutItem *item = mItems.at(i);
+	    int x = 0;
+	    int xp = 0;
+	    QRect geom = item->geometry();
+	    geom.setX( x );
+	    geom.setWidth(itemWidth);
+	    while ( xp < n && intersects(item, geom)) {
+		x += itemWidth;
+		xp++;
+		geom.moveBy(itemWidth, 0);
+	    }
+	    if (xp >= n) {
+		geom.setX(rovingXp * itemWidth);
+		geom.setWidth(itemWidth);
+		rovingXp++;
+		item->setGeometry( geom );
+	    } else {
+		item->setGeometry( geom );
+	    }
+	    i++;
+	}
+    }
+    if (itemWidth < maxWidth)
+	maxWidth = itemWidth;
+}
+
+int LayoutManager::timeToHeight( const QTime &time ) const
+{
+    int y = time.hour() * 60 + time.minute();
+    if (y)
+	y = (y * (height / 24)) / 60;
+    return y;
+}
+
+QTime LayoutManager::heightToTime( int h ) const
+{
+    // broken
+    return QTime(0,0,0);
+}
+
+LayoutItem *LayoutManager::intersects(LayoutItem *item, QRect geom) const
+{
+    int i = 0;
+    // allow overlapping
+    geom.moveBy(1,1);
+    geom.setSize( geom.size() - QSize(2,2) );
+
+    LayoutItem *it = mItems.at(i);
+    int count = mItems.count();
+    while (i < count && it != item) {
+	if (it->geometry().intersects( geom ) )
+	    return it;
+	it = mItems.at(++i);
+    }
+    return 0;
+}
+
+void LayoutManager::initializeGeometry(LayoutItem *item)
+{
+    int y = timeToHeight(item->occurance().start());
+    int yend = timeToHeight(item->occurance().end());
+
+    int h = yend - y;
+    if (h < min_height)
+	h = min_height;
+    if (y + min_height > height) {
+	y = height - min_height;
+	h = min_height;
+    }
+
+    item->setGeometry(QRect(0, y, width, h));
+}
--
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