From b9aad1f15dc600e4dbe4c62d3fcced6363188ba3 Mon Sep 17 00:00:00 2001
From: zautrix <zautrix>
Date: Sat, 26 Jun 2004 19:01:18 +0000
Subject: Initial revision

---
(limited to 'libkdepim/kdateedit.cpp')

diff --git a/libkdepim/kdateedit.cpp b/libkdepim/kdateedit.cpp
new file mode 100644
index 0000000..60bd2cf
--- a/dev/null
+++ b/libkdepim/kdateedit.cpp
@@ -0,0 +1,486 @@
+/*
+    This file is part of libkdepim.
+
+    Copyright (c) 2002 Cornelius Schumacher <schumacher@kde.org>
+
+    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 of the License, 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.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+    As a special exception, permission is given to link this program
+    with any edition of Qt, and distribute the resulting executable,
+    without including the source code for Qt in the source distribution.
+*/
+
+#include <qapplication.h>
+#include <qevent.h>
+#include <qlineedit.h>
+#include <qpixmap.h>
+#include <qpushbutton.h>
+
+#include <kdatepicker.h>
+#include <kdebug.h>
+#include <kglobal.h>
+#include <kiconloader.h>
+#include <klocale.h>
+#include <kmessagebox.h>
+#include <knotifyclient.h>
+#include <qpalette.h>
+
+#include "kdateedit.h"
+#include "kdateedit.moc"
+
+KDateEdit::KDateEdit(QWidget *parent, const char *name, bool withoutDP )
+  : QHBox(parent, name)
+{
+  dateFormShort = true;
+  withoutDp = withoutDP;
+  mDateEdit = new QLineEdit(this);
+  mDateEdit->setText(KGlobal::locale()->formatDate(QDate::currentDate(),dateFormShort));
+  setFocusProxy(mDateEdit);
+  mDateEdit->installEventFilter(this);
+
+  // Highlight Background and Textcolor
+  QPalette palette = QWidget::palette();
+  unsigned char red, green, blue;
+  red = palette.color( QPalette::Normal , QColorGroup::Background ).red() - 10;
+  green = palette.color( QPalette::Normal , QColorGroup::Background ).green() - 10;
+  blue = palette.color( QPalette::Normal , QColorGroup::Background ).blue() - 10;
+  palette.setColor( QColorGroup::Highlight, QColor(red,green,blue) );
+  palette.setColor( QColorGroup::HighlightedText, palette.color( QPalette::Normal , QColorGroup::Foreground ) );
+  mDateEdit->setPalette( palette );
+
+  if ( withoutDP ) {
+      mDateFrame = 0;
+      mDateButton = 0;
+      mDatePicker = 0;
+  } else {
+      QPixmap pixmap = SmallIcon("smallcal");
+      mDateButton = new QPushButton(this);
+      mDateButton->setPixmap(pixmap);
+
+      mDateFrame = new QVBox(0,0,WType_Popup);
+      // mDateFrame->setFrameStyle(QFrame::PopupPanel | QFrame::Raised);
+      mDateFrame->setFrameStyle( QFrame::WinPanel |QFrame::Raised );
+      mDateFrame->setLineWidth(3);
+      mDateFrame->hide();
+
+      mDatePicker = new KDatePicker(mDateFrame,QDate::currentDate());
+      connect(mDatePicker,SIGNAL(dateEntered(QDate)),SLOT(setDate(QDate)));
+      connect(mDatePicker,SIGNAL(dateEntered(QDate)),SIGNAL(dateChanged(QDate)));
+      connect(mDatePicker,SIGNAL(dateSelected(QDate)),SLOT(setDate(QDate)));
+      connect(mDatePicker,SIGNAL(dateSelected(QDate)),SIGNAL(dateChanged(QDate)));
+      connect(mDatePicker,SIGNAL(dateSelected(QDate)),mDateFrame,SLOT(hide()));
+      connect(mDateButton,SIGNAL(clicked()),SLOT(toggleDatePicker()));
+      
+      //mDateFrame->resize( 400, 300 );
+      
+  }
+      connect(mDateEdit,SIGNAL(returnPressed()),SLOT(lineEnterPressed()));
+      connect(mDateEdit,SIGNAL(textChanged(const QString &)),
+              SLOT(textChanged(const QString &)));
+
+  // Create the keyword list. This will be used to match against when the user
+  // enters information.
+  mKeywordMap[i18n("tomorrow")] = 1;
+  mKeywordMap[i18n("today")] = 0;
+  mKeywordMap[i18n("yesterday")] = -1;
+
+  /*
+   * This loop uses some math tricks to figure out the offset in days
+   * to the next date the given day of the week occurs. There
+   * are two cases, that the new day is >= the current day, which means
+   * the new day has not occured yet or that the new day < the current day,
+   * which means the new day is already passed (so we need to find the
+   * day in the next week).
+   */
+  QString dayName;
+  int currentDay = QDate::currentDate().dayOfWeek();
+  for (int i = 1; i <= 7; ++i)
+  {
+    dayName = KGlobal::locale()->weekDayName(i).lower();
+    if (i >= currentDay)
+      mKeywordMap[dayName] = i - currentDay;
+    else
+      mKeywordMap[dayName] = 7 - currentDay + i;
+  }
+
+  mTextChanged = false;
+  mHandleInvalid = false;
+  QWidget::setTabOrder( mDateEdit, mDateButton );
+}
+
+KDateEdit::~KDateEdit()
+{
+  delete mDateFrame;
+}
+
+void KDateEdit::setDate(QDate newDate)
+{
+  if (!newDate.isValid() && !mHandleInvalid)
+    return;
+  if ( readDate() ==  newDate )
+      return;
+  QString dateString = "";
+  if(newDate.isValid())
+    dateString = KGlobal::locale()->formatDate( newDate, dateFormShort );
+
+  mTextChanged = false;
+
+  // We do not want to generate a signal here, since we explicity setting
+  // the date
+  bool b = mDateEdit->signalsBlocked();
+  mDateEdit->blockSignals(true);
+  mDateEdit->setText(dateString);
+  mDateEdit->blockSignals(b);
+}
+
+void KDateEdit::setDate( QDate date,int *cpos,const int key ,const bool dateFormShort)
+{
+  QString dateForm = dateFormShort ?
+                     KGlobal::locale()->dateFormatShort() :
+                     KGlobal::locale()->dateFormat();
+
+  int begin = dateForm.find("%");
+  int space = 0;
+  int allStrLength = 0;
+  int strLength = 0;
+  int repeat = 0;
+
+  // witch? Day, Month or Year switch?
+  while(1){
+    switch ( dateForm.at(begin + 1).latin1() )
+    {
+    case 'd':// 16 (month day)
+      strLength = 2; //Ok
+      break;
+    case 'm':// 01 (month)
+      strLength = 2; //Ok
+      break;
+    case 'a':// Mon (Weekday)
+      strLength = KGlobal::locale()->weekDayName(date.dayOfWeek(), true).length();
+      break;
+    case 'A':// Monday (Weekday)
+      strLength = KGlobal::locale()->weekDayName(date.dayOfWeek(), false).length();
+      break;
+    case 'b':// Jan (monthName)
+      strLength = KGlobal::locale()->monthName(date.month(), true).length();
+      break;
+    case 'B':// January (monthName)
+      strLength = KGlobal::locale()->monthName(date.month(), false).length();
+      break;
+    case 'y':// 04 (year short)
+      strLength = 2; //Ok
+      break;
+    case 'Y':// 2004 (year)
+      strLength = 4; //Ok
+      break;
+    default:
+      break;
+    }
+    space = begin - (repeat++ * 2);
+    // all select? then dayswitch
+    if( (mDateEdit->text().length() == mDateEdit->markedText().length() ) &&
+                               ( (dateForm.at(begin + 1).latin1() == 'd') ||
+                                 (dateForm.at(begin + 1).latin1() == 'a') ||
+                                 (dateForm.at(begin + 1).latin1() == 'A') ) ) {
+      break;
+    }
+    // mDateEdit-StringPos == CursorPosition(cpos) then break and set date
+    if( ( (space + allStrLength) <= *cpos && *cpos <= (space + allStrLength + strLength) ) || *cpos < begin ) {
+      break;
+    }
+    allStrLength += strLength;
+    begin = dateForm.find("%", begin +1);
+  }
+
+  // set date
+  switch ( dateForm.at(begin + 1).latin1() ) {
+    case 'd':
+    case 'a':
+    case 'A':
+      if(key == Key_Up) {
+        setDate( date.addDays( 1 ) );
+      }
+      else if(key == Key_Down) {
+        setDate( date.addDays( -1 ) );
+      }
+      maxDay = readDate().day();
+      break;
+    case 'm':
+    case 'b':
+    case 'B':
+      if(key == Key_Up) {
+          int year = ((date.month()+1)>12)?date.year()+1:date.year();
+          int month = ((date.month()+1)>12)?1:date.month()+1;
+          int day = (QDate(year,month,1).daysInMonth()<maxDay)?QDate(year,month,1).daysInMonth():maxDay;
+          setDate( QDate( year, month, day ) );
+      } else if(key == Key_Down) {
+          int year = ((date.month()-1)<1)?date.year()-1:date.year();
+          int month = ((date.month()-1)<1)?12:date.month()-1;
+          int day = (QDate(year,month,1).daysInMonth()<maxDay)?QDate(year,month,1).daysInMonth():maxDay;
+          setDate( QDate( year, month, day ) );
+      }
+      break;
+    case 'y':
+    case 'Y':
+      if(key == Key_Up) {
+        setDate( QDate( date.year() + 1, date.month() , date.day()) );
+      }
+      else if(key == Key_Down) {
+        setDate( QDate( date.year() - 1, date.month() , date.day()) );
+      }
+      break;
+/*    default:
+      if(key == Key_Up) {
+        setDate( date.addDays( 1 ) );
+      } else if(key == Key_Down) {
+        setDate( date.addDays( -1 ) );
+      }
+      break;*/
+  }
+
+  date = readDate();
+  begin = dateForm.find("%");
+  int allSelectStrLength = 0;
+  int selectStrLength = 0;
+
+  // set selection do new date an set cursor at end of selection
+  for(int i = 0; i < repeat; i++){
+    switch ( dateForm.at(begin + 1).latin1() )
+    {
+    case 'd':// 16 (month day)
+      selectStrLength = 2; //Ok
+      break;
+    case 'm':// 01 (month)
+      selectStrLength = 2; //Ok
+      break;
+    case 'a':// Mon (Weekday short)
+      selectStrLength = KGlobal::locale()->weekDayName(date.dayOfWeek(), true).length();
+      break;
+    case 'A':// Monday (Weekday)
+      selectStrLength = KGlobal::locale()->weekDayName(date.dayOfWeek(), false).length();
+      break;
+    case 'b':// Jan (monthName short)
+      selectStrLength = KGlobal::locale()->monthName(date.month(), true).length();
+      break;
+    case 'B':// January (monthName)
+      selectStrLength = KGlobal::locale()->monthName(date.month(), false).length();
+      break;
+    case 'y':// 04 (year short)
+      selectStrLength = 2; //Ok
+      break;
+    case 'Y':// 2004 (year)
+      selectStrLength = 4; //Ok
+      break;
+    default:
+      break;
+    }
+    space = begin - (i * 2);
+    allSelectStrLength += selectStrLength;
+    begin = dateForm.find("%", begin +1);
+  }
+  // set selection from begin of date
+  setSelect(  space + allSelectStrLength - selectStrLength , selectStrLength);
+  *cpos = space + allSelectStrLength;
+  emit(dateChanged(date));
+
+  return;
+}
+
+void KDateEdit::setHandleInvalid(bool handleInvalid)
+{
+  mHandleInvalid = handleInvalid;
+}
+
+void KDateEdit::setEnabled(bool on)
+{
+  mDateEdit->setEnabled(on);
+  mDateButton->setEnabled(on);
+}
+
+QDate KDateEdit::date() const
+{
+  QDate date = readDate();
+
+  if (date.isValid() || mHandleInvalid) {
+    return date;
+  } else {
+    KNotifyClient::beep();
+    return QDate::currentDate();
+  }
+}
+
+void KDateEdit::keyPressEvent(QKeyEvent *e)
+{
+  QDate date = readDate();
+  int cpos = mDateEdit->cursorPosition();
+
+  switch(e->key())
+  {
+  case Key_Escape:
+      mDateEdit->deselect();
+  case Key_Tab:
+      QHBox::keyPressEvent(e);
+      break;
+  case Key_Up:
+      // when date invalid then set to currend and return
+      if(!date.isValid()) {
+        date = QDate::currentDate();
+        setDate(date);
+        mDateEdit->setCursorPosition(cpos);
+        emit(dateChanged(date));
+        QString text = i18n( "You entered an invalid date!\n Date changed  to current date." );
+        KMessageBox::information( 0, text );
+        return;
+      }
+      setDate(date, &cpos, Key_Up, dateFormShort);
+      break;
+  case Key_Down:
+      // when date invalid then set to current and return
+      if(!date.isValid()) {
+        date = QDate::currentDate();
+        setDate(date);
+        mDateEdit->setCursorPosition(cpos);
+        emit(dateChanged(date));
+        QString text = i18n( "You entered an invalid date!\n Date changed  to current date." );
+        KMessageBox::information( 0, text );
+        return;
+      }
+      setDate(date, &cpos, Key_Down, dateFormShort);
+      break;
+  default:
+      QHBox::keyPressEvent(e);
+      break;
+  } // switch
+  mDateEdit->setCursorPosition(cpos);
+}
+
+void KDateEdit::setSelect( int from, int to )
+{
+//    return;
+    mDateEdit->setSelection( from , to );
+}
+
+void KDateEdit::toggleDatePicker()
+{
+  if( mDateFrame->isVisible() ) {
+    mDateFrame->hide();
+  } else {
+    QPoint tmpPoint = mapToGlobal(mDateButton->geometry().bottomRight());
+    QSize datepickersize = mDatePicker->sizeHint();
+
+    if ( tmpPoint.x() < 7+datepickersize.width() ) tmpPoint.setX( 7+datepickersize.width() );
+
+    int h = QApplication::desktop()->height();
+
+    if ( tmpPoint.y() + datepickersize.height() > h ) tmpPoint.setY( h - datepickersize.height() );
+
+    mDateFrame->setGeometry(tmpPoint.x()-datepickersize.width()-7, tmpPoint.y(),
+     datepickersize.width()+2*mDateFrame->lineWidth(), datepickersize.height()+2*mDateFrame->lineWidth());
+
+    QDate date = readDate();
+    if(date.isValid()) {
+      mDatePicker->setDate(date);
+    } else {
+      mDatePicker->setDate(QDate::currentDate());
+    }
+    mDateFrame->show();
+  }
+}
+
+
+void KDateEdit::lineEnterPressed()
+{
+    QDate date = readDate();
+
+    if(date.isValid())
+        {
+            // Update the edit. This is needed if the user has entered a
+            // word rather than the actual date.
+            setDate(date);
+            emit(dateChanged(date));
+            emit returnPressed();
+        }
+    else
+      {
+          if ( withoutDp ) {
+              KNotifyClient::beep();
+          } else {
+              if ( !mDateEdit->text().isEmpty() ) {
+                  mTextChanged = false;
+                  QString text = i18n( "You entered an invalid date!\n Will use current date instead." );
+                  if ( KMessageBox::warningContinueCancel( 0, text ) == KMessageBox::Continue ) {
+                      setDate( QDate::currentDate() );
+                      emit dateChanged( QDate::currentDate() );
+                  }
+              }
+          }
+      }
+}
+
+bool KDateEdit::inputIsValid()
+{
+  return readDate().isValid();
+}
+
+QDate KDateEdit::readDate() const
+{
+  QString text = mDateEdit->text();
+  QDate date;
+
+  if (mKeywordMap.contains(text.lower()))
+  {
+    date = QDate::currentDate().addDays(mKeywordMap[text.lower()]);
+  }
+  else
+  {
+    date = KGlobal::locale()->readDate(text);
+  }
+
+  return date;
+}
+
+bool KDateEdit::eventFilter(QObject *, QEvent *e)
+{
+  // We only process the focus out event if the text has changed
+  // since we got focus
+  if ((e->type() == QEvent::FocusOut) && mTextChanged)
+  {
+    lineEnterPressed();
+    mTextChanged = false;
+  }
+  // switch dateFormShort by double klick with mouse
+  else if (e->type() == QEvent::MouseButtonDblClick)
+  {
+    dateFormShort = dateFormShort?false:true;
+    mDateEdit->setText(KGlobal::locale()->formatDate(readDate(),dateFormShort));
+  }
+  else if (e->type() == QEvent::FocusIn) 
+  {
+    maxDay = readDate().day();
+  }
+
+  return false;
+}
+
+void KDateEdit::textChanged(const QString &)
+{
+  if(mHandleInvalid && mDateEdit->text().stripWhiteSpace().isEmpty()) {
+    QDate date; //invalid date
+    emit(dateChanged(date));
+  } else  {
+    mTextChanged = true;
+  }
+    maxDay = readDate().day();
+}
--
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