Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegames@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 1044 insertions, 0 deletions

diff --git a/ksokoban/PlayField.cpp b/ksokoban/PlayField.cpp
new file mode 100644
index 00000000..4d98d309
--- /dev/null
+++ b/ksokoban/PlayField.cpp
@@ -0,0 +1,1044 @@
+/*
+ *  ksokoban - a Sokoban game for KDE
+ *  Copyright (C) 1998  Anders Widell  <d95-awi@nada.kth.se>
+ *
+ *  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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <stdio.h>
+#include <assert.h>
+
+#include <qwidget.h>
+#include <qpixmap.h>
+#include <qkeycode.h>
+#include <kconfig.h>
+#include <kapplication.h>
+#include <klocale.h>
+#include <qpainter.h>
+#include <kmessagebox.h>
+#include <kglobalsettings.h>
+
+#include "PlayField.h"
+#include "ModalLabel.h"
+#include "LevelMap.h"
+#include "Move.h"
+#include "History.h"
+#include "PathFinder.h"
+#include "MapDelta.h"
+#include "MoveSequence.h"
+#include "StaticImage.h"
+#include "HtmlPrinter.h"
+#include "Bookmark.h"
+#include "LevelCollection.h"
+
+#include "PlayField.moc"
+
+PlayField::PlayField(QWidget *parent, const char *name, WFlags f)
+  : QWidget(parent, name, f|WResizeNoErase), imageData_(0), lastLevel_(-1),
+    moveSequence_(0), moveInProgress_(false), dragInProgress_(false),
+    xOffs_(0), yOffs_(0),
+    wheelDelta_(0),
+    levelText_(i18n("Level:")), stepsText_(i18n("Steps:")),
+    pushesText_(i18n("Pushes:")),
+    statusFont_(KGlobalSettings::generalFont().family(), 18, QFont::Bold), statusMetrics_(statusFont_) {
+
+  setFocusPolicy(QWidget::StrongFocus);
+  setFocus();
+  setBackgroundMode(Qt::NoBackground);
+  setMouseTracking(true);
+
+  highlightX_ = highlightY_ = 0;
+
+  KConfig *cfg = (KApplication::kApplication())->config();
+  cfg->setGroup("settings");
+
+  imageData_ = new StaticImage;
+
+  animDelay_ = cfg->readNumEntry("animDelay", 2);
+  if (animDelay_ < 0 || animDelay_ > 3) animDelay_ = 2;
+
+  history_ = new History;
+
+  background_.setPixmap(imageData_->background());
+  floor_ = QColor(0x66,0x66,0x66);
+
+  levelMap_  = new LevelMap;
+  mapDelta_ = new MapDelta(levelMap_);
+  mapDelta_->end();
+
+  levelChange();
+}
+
+PlayField::~PlayField() {
+  KConfig *cfg = (KApplication::kApplication())->config();
+  cfg->setGroup("settings");
+  cfg->writeEntry("animDelay", animDelay_, true, false, false);
+
+  delete mapDelta_;
+  delete history_;
+  delete levelMap_;
+  delete imageData_;
+}
+
+void
+PlayField::changeCursor(const QCursor* c) {
+  if (cursor_ == c) return;
+
+  cursor_ = c;
+  if (c == 0) unsetCursor();
+  else setCursor(*c);
+}
+
+int
+PlayField::level() const {
+  if (levelMap_ == 0) return 0;
+  return levelMap_->level();
+}
+
+const QString &
+PlayField::collectionName() {
+  static QString error = "????";
+  if (levelMap_ == 0) return error;
+  return levelMap_->collectionName();
+}
+
+int
+PlayField::totalMoves() const {
+  if (levelMap_ == 0) return 0;
+  return levelMap_->totalMoves();
+}
+
+int
+PlayField::totalPushes() const{
+  if (levelMap_ == 0) return 0;
+  return levelMap_->totalPushes();
+}
+
+void
+PlayField::levelChange() {
+  stopMoving();
+  stopDrag();
+  history_->clear();
+  setSize(width(), height());
+
+  updateLevelXpm();
+  updateStepsXpm();
+  updatePushesXpm();
+  highlight();
+}
+
+void
+PlayField::paintSquare(int x, int y, QPainter &paint) {
+  if (levelMap_->xpos() == x && levelMap_->ypos() == y) {
+    if (levelMap_->goal(x, y))
+      imageData_->saveman(paint, x2pixel(x), y2pixel(y));
+    else
+      imageData_->man(paint, x2pixel(x), y2pixel(y));
+    return;
+  }
+  if (levelMap_->empty(x, y)) {
+    if (levelMap_->floor(x, y)) {
+      if (levelMap_->goal(x, y))
+	imageData_->goal(paint, x2pixel(x), y2pixel(y));
+      else
+	paint.fillRect(x2pixel(x), y2pixel(y), size_, size_, floor_);
+    } else {
+      paint.fillRect(x2pixel(x), y2pixel(y), size_, size_, background_);
+    }
+    return;
+  }
+  if (levelMap_->wall(x, y)) {
+    imageData_->wall(paint, x2pixel(x), y2pixel(y), x+y*(MAX_X+1),
+		     levelMap_->wallLeft(x, y),
+		     levelMap_->wallRight(x, y));
+    return;
+  }
+
+
+  if (levelMap_->object(x, y)) {
+    if (highlightX_ == x && highlightY_ == y) {
+      if (levelMap_->goal(x, y))
+	imageData_->brightTreasure(paint, x2pixel(x), y2pixel(y));
+      else
+	imageData_->brightObject(paint, x2pixel(x), y2pixel(y));
+    } else {
+      if (levelMap_->goal(x, y))
+	imageData_->treasure(paint, x2pixel(x), y2pixel(y));
+      else
+	imageData_->object(paint, x2pixel(x), y2pixel(y));
+    }
+    return;
+  }
+}
+
+void
+PlayField::paintDelta() {
+  QPainter paint(this);
+
+  // the following line is a workaround for a bug in Qt 2.0.1
+  // (and possibly earlier versions)
+  paint.setBrushOrigin(0, 0);
+
+  for (int y=0; y<levelMap_->height(); y++) {
+    for (int x=0; x<levelMap_->width(); x++) {
+      if (mapDelta_->hasChanged(x, y)) paintSquare(x, y, paint);
+    }
+  }
+}
+
+
+
+void
+PlayField::paintEvent(QPaintEvent *e) {
+  QPainter paint(this);
+
+  // the following line is a workaround for a bug in Qt 2.0.1
+  // (and possibly earlier versions)
+  paint.setBrushOrigin(0, 0);
+
+  paint.setClipRegion(e->region());
+  paint.setClipping(true);
+
+  paintPainter(paint, e->rect());
+}
+
+void
+PlayField::paintPainterClip(QPainter &paint, int x, int y, int w, int h) {
+  QRect rect(x, y, w, h);
+
+  paint.setClipRect(rect);
+  paint.setClipping(true);
+  paintPainter(paint, rect);
+}
+
+void
+PlayField::paintPainter(QPainter &paint, const QRect &rect) {
+  if (size_ <= 0) return;
+  int minx = pixel2x(rect.x());
+  int miny = pixel2y(rect.y());
+  int maxx = pixel2x(rect.x()+rect.width()-1);
+  int maxy = pixel2y(rect.y()+rect.height()-1);
+
+  if (minx < 0) minx = 0;
+  if (miny < 0) miny = 0;
+  if (maxx >= levelMap_->width()) maxx = levelMap_->width()-1;
+  if (maxy >= levelMap_->height()) maxy = levelMap_->height()-1;
+
+  {
+    int x1, x2, y1, y2;
+    y1 = y2pixel(miny);
+    if (y1 > rect.y()) paint.fillRect(rect.x(), rect.y(), rect.width(), y1-rect.y(), background_);
+
+    int bot=rect.y()+rect.height();
+    if (bot > height()-collRect_.height()) bot = height()-collRect_.height();
+
+    y2 = y2pixel(maxy+1);
+    if (y2 < bot) paint.fillRect(rect.x(), y2, rect.width(), bot-y2, background_);
+
+    x1 = x2pixel(minx);
+    if (x1 > rect.x()) paint.fillRect(rect.x(), y1, x1-rect.x(), y2-y1, background_);
+
+    x2 = x2pixel(maxx+1);
+    if (x2 < rect.x()+rect.width()) paint.fillRect(x2, y1, rect.x()+rect.width()-x2, y2-y1, background_);
+
+    // paint.eraseRect
+  }
+
+  for (int y=miny; y<=maxy; y++) {
+    for (int x=minx; x<=maxx; x++) {
+      paintSquare(x, y, paint);
+    }
+  }
+
+  if (collRect_.intersects(rect)) paint.drawPixmap(collRect_.x(), collRect_.y(), collXpm_);
+  if (ltxtRect_.intersects(rect)) paint.drawPixmap(ltxtRect_.x(), ltxtRect_.y(), ltxtXpm_);
+  if (lnumRect_.intersects(rect)) paint.drawPixmap(lnumRect_.x(), lnumRect_.y(), lnumXpm_);
+  if (stxtRect_.intersects(rect)) paint.drawPixmap(stxtRect_.x(), stxtRect_.y(), stxtXpm_);
+  if (snumRect_.intersects(rect)) paint.drawPixmap(snumRect_.x(), snumRect_.y(), snumXpm_);
+  if (ptxtRect_.intersects(rect)) paint.drawPixmap(ptxtRect_.x(), ptxtRect_.y(), ptxtXpm_);
+  if (pnumRect_.intersects(rect)) paint.drawPixmap(pnumRect_.x(), pnumRect_.y(), pnumXpm_);
+}
+
+void
+PlayField::resizeEvent(QResizeEvent *e) {
+  setSize(e->size().width(), e->size().height());
+}
+
+void
+PlayField::mouseMoveEvent(QMouseEvent *e) {
+  lastMouseXPos_ = e->x();
+  lastMouseYPos_ = e->y();
+
+  if (!dragInProgress_) return highlight();
+
+  int old_x = dragX_, old_y = dragY_;
+
+  dragX_ = lastMouseXPos_ - mousePosX_;
+  dragY_ = lastMouseYPos_ - mousePosY_;
+
+  {
+    int x = pixel2x(dragX_ + size_/2);
+    int y = pixel2y(dragY_ + size_/2);
+    if (x >= 0 && x < levelMap_->width() &&
+	y >= 0 && y < levelMap_->height() &&
+	pathFinder_.canDragTo(x, y)) {
+      x = x2pixel(x);
+      y = y2pixel(y);
+
+      if (dragX_ >= x - size_/4 &&
+	  dragX_ <  x + size_/4 &&
+	  dragY_ >= y - size_/4 &&
+	  dragY_ <  y + size_/4) {
+	dragX_ = x;
+	dragY_ = y;
+      }
+    }
+  }
+
+  if (dragX_ == old_x && dragY_ == old_y) return;
+
+  QRect rect(dragX_, dragY_, size_, size_);
+
+  dragXpm_.resize(size_, size_);
+
+  QPainter paint;
+  paint.begin(&dragXpm_);
+  paint.setBackgroundColor(backgroundColor());
+  paint.setBrushOrigin(- dragX_, - dragY_);
+  paint.translate((double) (- dragX_), (double) (- dragY_));
+  paintPainter(paint, rect);
+  paint.end();
+
+  dragImage_ = dragXpm_;
+  for (int yy=0; yy<size_; yy++) {
+    for (int xx=0; xx<size_; xx++) {
+      QRgb rgb1 = imageData_->objectImg().pixel(xx, yy);
+      int r1 = qRed(rgb1);
+      int g1 = qGreen(rgb1);
+      int b1 = qBlue(rgb1);
+      if (r1 != g1 || r1 != b1 || r1 == 255) {
+	QRgb rgb2 = dragImage_.pixel(xx, yy);
+	int r2 = qRed(rgb2);
+	int g2 = qGreen(rgb2);
+	int b2 = qBlue(rgb2);
+	r2 = (int) (0.75 * r1 + 0.25 * r2 + 0.5);
+	g2 = (int) (0.75 * g1 + 0.25 * g2 + 0.5);
+	b2 = (int) (0.75 * b1 + 0.25 * b2 + 0.5);
+	dragImage_.setPixel(xx, yy, qRgb(r2, g2, b2));
+      }
+    }
+  }
+
+  paint.begin(this);
+
+  // the following line is a workaround for a bug in Qt 2.0.1
+  // (and possibly earlier versions)
+  paint.setBrushOrigin(0, 0);
+
+  dragXpm_.convertFromImage(dragImage_,
+			    OrderedDither|OrderedAlphaDither|
+			    ColorOnly|AvoidDither);
+  paint.drawPixmap(dragX_, dragY_, dragXpm_);
+
+  {
+    int dx = dragX_ - old_x;
+    int dy = dragY_ - old_y;
+    int y2 = old_y;
+    if (dy > 0) {
+      paintPainterClip(paint, old_x, old_y, size_, dy);
+      // NOTE: clipping is now activated in the QPainter paint
+      y2 += dy;
+    } else if (dy < 0) {
+      paintPainterClip(paint, old_x, old_y+size_+dy, size_, -dy);
+      // NOTE: clipping is now activated in the QPainter paint
+      dy = -dy;
+    }
+    if (dx > 0) {
+      paintPainterClip(paint, old_x, y2, dx, size_-dy);
+      // NOTE: clipping is now activated in the QPainter paint
+    } else if (dx < 0) {
+      paintPainterClip(paint, old_x+size_+dx, y2, -dx, size_-dy);
+      // NOTE: clipping is now activated in the QPainter paint
+    }
+  }
+  paint.end();
+}
+
+void
+PlayField::highlight() {
+  // FIXME: the line below should not be needed
+  if (size_ == 0) return;
+
+  int x=pixel2x(lastMouseXPos_);
+  int y=pixel2y(lastMouseYPos_);
+
+  if (x < 0 || y < 0 || x >= levelMap_->width() || y >= levelMap_->height())
+    return;
+
+  if (x == highlightX_ && y == highlightY_) return;
+
+  if (pathFinder_.canDrag(x, y)) {
+    QPainter paint(this);
+
+    if (highlightX_ >= 0) {
+      int x = highlightX_, y = highlightY_;
+      highlightX_ = -1;
+      paintSquare(x, y, paint);
+    } else
+      changeCursor(&sizeAllCursor);
+
+    if (levelMap_->goal(x, y))
+      imageData_->brightTreasure(paint, x2pixel(x), y2pixel(y));
+    else
+      imageData_->brightObject(paint, x2pixel(x), y2pixel(y));
+    highlightX_ = x;
+    highlightY_ = y;
+  } else {
+    if (pathFinder_.canWalkTo(x, y)) changeCursor(&crossCursor);
+    else changeCursor(0);
+    if (highlightX_ >= 0) {
+      QPainter paint(this);
+
+      int x = highlightX_, y = highlightY_;
+      highlightX_ = -1;
+
+      paintSquare(x, y, paint);
+    }
+  }
+}
+
+void
+PlayField::stopMoving() {
+  killTimers();
+  delete moveSequence_;
+  moveSequence_ = 0;
+  moveInProgress_ = false;
+  updateStepsXpm();
+  updatePushesXpm();
+
+  QPainter paint(this);
+  paint.drawPixmap(snumRect_.x(), snumRect_.y(), snumXpm_);
+  paint.drawPixmap(pnumRect_.x(), pnumRect_.y(), pnumXpm_);
+
+  pathFinder_.updatePossibleMoves();
+}
+
+
+void
+PlayField::startMoving(Move *m) {
+  startMoving(new MoveSequence(m, levelMap_));
+}
+
+void
+PlayField::startMoving(MoveSequence *ms) {
+  static const int delay[4] = {0, 15, 35, 60};
+
+  assert(moveSequence_ == 0 && !moveInProgress_);
+  moveSequence_ = ms;
+  moveInProgress_ = true;
+  if (animDelay_) startTimer(delay[animDelay_]);
+  timerEvent(0);
+}
+
+void
+PlayField::timerEvent(QTimerEvent *) {
+  assert(moveInProgress_);
+  if (moveSequence_ == 0) {
+    killTimers();
+    moveInProgress_ = false;
+    return;
+  }
+
+  bool more=false;
+
+  mapDelta_->start();
+  if (animDelay_) more = moveSequence_->next();
+  else {
+    while (moveSequence_->next()) if (levelMap_->completed()) break;
+    more = true;   // FIXME: clean this up
+    stopMoving();
+  }
+  mapDelta_->end();
+
+  if (more) {
+    paintDelta();
+    if (levelMap_->completed()) {
+      stopMoving();
+      ModalLabel::message(i18n("Level completed"), this);
+      nextLevel();
+      return;
+    }
+  } else stopMoving();
+}
+
+void
+PlayField::step(int _x, int _y) {
+  if (!canMoveNow()) return;
+
+  int oldX=levelMap_->xpos();
+  int oldY=levelMap_->ypos();
+  int x=oldX, y=oldY;
+
+  int dx=0, dy=0;
+  if (_x>oldX) dx=1;
+  if (_x<oldX) dx=-1;
+  if (_y>oldY) dy=1;
+  if (_y<oldY) dy=-1;
+
+  while (!(x==_x && y==_y) && levelMap_->step(x+dx, y+dy)) {
+    x += dx;
+    y += dy;
+  }
+
+  if (x!=oldX || y!=oldY) {
+    Move *m = new Move(oldX, oldY);
+    m->step(x, y);
+    m->finish();
+    history_->add(m);
+    m->undo(levelMap_);
+
+    startMoving(m);
+
+  }
+}
+
+void
+PlayField::push(int _x, int _y) {
+  if (!canMoveNow()) return;
+
+  int oldX=levelMap_->xpos();
+  int oldY=levelMap_->ypos();
+  int x=oldX, y=oldY;
+
+  int dx=0, dy=0;
+  if (_x>oldX) dx=1;
+  if (_x<oldX) dx=-1;
+  if (_y>oldY) dy=1;
+  if (_y<oldY) dy=-1;
+
+  while (!(x==_x && y==_y) && levelMap_->step(x+dx, y+dy)) {
+    x += dx;
+    y += dy;
+  }
+  int objX=x, objY=y;
+  while (!(x==_x && y==_y) && levelMap_->push(x+dx, y+dy)) {
+    x += dx;
+    y += dy;
+  }
+
+  if (x!=oldX || y!=oldY) {
+    Move *m = new Move(oldX, oldY);
+
+    if (objX!=oldX || objY!=oldY) m->step(objX, objY);
+
+    if (objX!=x || objY!=y) {
+      m->push(x, y);
+
+      objX += dx;
+      objY += dy;
+    }
+    m->finish();
+    history_->add(m);
+
+    m->undo(levelMap_);
+
+    startMoving(m);
+  }
+}
+
+void
+PlayField::keyPressEvent(QKeyEvent * e) {
+  int x=levelMap_->xpos();
+  int y=levelMap_->ypos();
+
+  switch (e->key()) {
+  case Key_Up:
+    if (e->state() & ControlButton) step(x, 0);
+    else if (e->state() & ShiftButton) push(x, 0);
+    else push(x, y-1);
+    break;
+  case Key_Down:
+    if (e->state() & ControlButton) step(x, MAX_Y);
+    else if (e->state() & ShiftButton) push(x, MAX_Y);
+    else push(x, y+1);
+    break;
+  case Key_Left:
+    if (e->state() & ControlButton) step(0, y);
+    else if (e->state() & ShiftButton) push(0, y);
+    else push(x-1, y);
+    break;
+  case Key_Right:
+    if (e->state() & ControlButton) step(MAX_X, y);
+    else if (e->state() & ShiftButton) push(MAX_X, y);
+    else push(x+1, y);
+    break;
+
+  case Key_Q:
+    KApplication::kApplication()->closeAllWindows();
+    break;
+
+  case Key_Backspace:
+  case Key_Delete:
+    if (e->state() & ControlButton) redo();
+    else undo();
+    break;
+
+#if 0
+  case Key_X:
+    levelMap_->random();
+    levelChange();
+    repaint(false);
+    break;
+
+  case Key_R:
+    level(levelMap_->level());
+    return;
+    break;
+  case Key_N:
+    nextLevel();
+    return;
+    break;
+  case Key_P:
+    previousLevel();
+    return;
+    break;
+  case Key_U:
+    undo();
+    return;
+    break;
+  case Key_I:
+    history_->redo(levelMap_);
+    repaint(false);
+    return;
+    break;
+
+  case Key_S:
+    {
+      QString buf;
+      history_->save(buf);
+      printf("%s\n", (char *) buf);
+    }
+    return;
+    break;
+
+  case Key_L:
+    stopMoving();
+    history_->clear();
+    level(levelMap_->level());
+    {
+      char buf[4096]="r1*D1*D1*r1*@r1*D1*";
+      //scanf("%s", buf);
+      history_->load(levelMap_, buf);
+    }
+    updateStepsXpm();
+    updatePushesXpm();
+    repaint(false);
+    return;
+    break;
+#endif
+
+
+  case Key_Print:
+    HtmlPrinter::printHtml(levelMap_);
+    break;
+
+  default:
+    e->ignore();
+    return;
+    break;
+  }
+}
+
+void
+PlayField::stopDrag() {
+  if (!dragInProgress_) return;
+
+  changeCursor(0);
+
+  QPainter paint(this);
+
+  // the following line is a workaround for a bug in Qt 2.0.1
+  // (and possibly earlier versions)
+  paint.setBrushOrigin(0, 0);
+
+  int x = highlightX_, y = highlightY_;
+  paintSquare(x, y, paint);
+
+  paintPainterClip(paint, dragX_, dragY_, size_, size_);
+  // NOTE: clipping is now activated in the QPainter paint
+  dragInProgress_ = false;
+
+}
+
+void
+PlayField::dragObject(int xpixel, int ypixel) {
+  int x=pixel2x(xpixel - mousePosX_ + size_/2);
+  int y=pixel2y(ypixel - mousePosY_ + size_/2);
+
+  if (x == highlightX_ && y == highlightY_) return;
+
+  printf("drag %d,%d to %d,%d\n", highlightX_, highlightY_, x, y);
+  pathFinder_.drag(highlightX_, highlightY_, x, y);
+  stopDrag();
+}
+
+
+void
+PlayField::mousePressEvent(QMouseEvent *e) {
+  if (!canMoveNow()) return;
+
+  if (dragInProgress_) {
+    if (e->button() == LeftButton) dragObject(e->x(), e->y());
+    else stopDrag();
+    return;
+  }
+
+  int x=pixel2x(e->x());
+  int y=pixel2y(e->y());
+
+  if (x < 0 || y < 0 || x >= levelMap_->width() || y >= levelMap_->height())
+    return;
+
+  if (e->button() == LeftButton && pathFinder_.canDrag(x, y)) {
+    QPainter paint(this);
+    changeCursor(&sizeAllCursor);
+
+    if (levelMap_->goal(x, y))
+      imageData_->brightTreasure(paint, x2pixel(x), y2pixel(y));
+    else
+      imageData_->brightObject(paint, x2pixel(x), y2pixel(y));
+    highlightX_ = x;
+    highlightY_ = y;
+    pathFinder_.updatePossibleDestinations(x, y);
+
+    dragX_ = x2pixel(x);
+    dragY_ = y2pixel(y);
+    mousePosX_ = e->x() - dragX_;
+    mousePosY_ = e->y() - dragY_;
+    dragInProgress_ = true;
+  }
+
+  Move *m;
+  switch (e->button()) {
+  case LeftButton:
+    m = pathFinder_.search(levelMap_, x, y);
+    if (m != 0) {
+      history_->add(m);
+
+      startMoving(m);
+    }
+    break;
+  case MidButton:
+    undo();
+    return;
+    break;
+  case RightButton:
+    push(x, y);
+    break;
+
+  default:
+    return;
+  }
+}
+
+void
+PlayField::wheelEvent(QWheelEvent *e) {
+  wheelDelta_ += e->delta();
+
+  if (wheelDelta_ >= 120) {
+    wheelDelta_ %= 120;
+    redo();
+  } else if (wheelDelta_ <= -120) {
+    wheelDelta_ = -(-wheelDelta_ % 120);
+    undo();
+  }
+}
+
+void
+PlayField::mouseReleaseEvent(QMouseEvent *e) {
+  if (dragInProgress_) dragObject(e->x(), e->y());
+}
+
+
+void
+PlayField::focusInEvent(QFocusEvent *) {
+  //printf("PlayField::focusInEvent\n");
+}
+
+void
+PlayField::focusOutEvent(QFocusEvent *) {
+  //printf("PlayField::focusOutEvent\n");
+}
+
+void
+PlayField::leaveEvent(QEvent *) {
+  stopDrag();
+}
+
+void
+PlayField::setSize(int w, int h) {
+  int sbarHeight = statusMetrics_.height();
+  int sbarNumWidth = statusMetrics_.boundingRect("88888").width()+8;
+  int sbarLevelWidth = statusMetrics_.boundingRect(levelText_).width()+8;
+  int sbarStepsWidth = statusMetrics_.boundingRect(stepsText_).width()+8;
+  int sbarPushesWidth = statusMetrics_.boundingRect(pushesText_).width()+8;
+
+  pnumRect_.setRect(w-sbarNumWidth, h-sbarHeight, sbarNumWidth, sbarHeight);
+  ptxtRect_.setRect(pnumRect_.x()-sbarPushesWidth, h-sbarHeight, sbarPushesWidth, sbarHeight);
+  snumRect_.setRect(ptxtRect_.x()-sbarNumWidth, h-sbarHeight, sbarNumWidth, sbarHeight);
+  stxtRect_.setRect(snumRect_.x()-sbarStepsWidth, h-sbarHeight, sbarStepsWidth, sbarHeight);
+  lnumRect_.setRect(stxtRect_.x()-sbarNumWidth, h-sbarHeight, sbarNumWidth, sbarHeight);
+  ltxtRect_.setRect(lnumRect_.x()-sbarLevelWidth, h-sbarHeight, sbarLevelWidth, sbarHeight);
+  collRect_.setRect(0, h-sbarHeight, ltxtRect_.x(), sbarHeight);
+
+  collXpm_.resize(collRect_.size());
+  ltxtXpm_.resize(ltxtRect_.size());
+  lnumXpm_.resize(lnumRect_.size());
+  stxtXpm_.resize(stxtRect_.size());
+  snumXpm_.resize(snumRect_.size());
+  ptxtXpm_.resize(ptxtRect_.size());
+  pnumXpm_.resize(pnumRect_.size());
+
+  h -= sbarHeight;
+
+  int cols = levelMap_->width();
+  int rows = levelMap_->height();
+
+  // FIXME: the line below should not be needed
+  if (cols == 0 || rows == 0) return;
+
+  int xsize = w / cols;
+  int ysize = h / rows;
+
+  if (xsize < 8) xsize = 8;
+  if (ysize < 8) ysize = 8;
+
+  size_ = imageData_->resize(xsize > ysize ? ysize : xsize);
+
+  xOffs_ = (w - cols*size_) / 2;
+  yOffs_ = (h - rows*size_) / 2;
+
+
+  updateCollectionXpm();
+  updateTextXpm();
+  updateLevelXpm();
+  updateStepsXpm();
+  updatePushesXpm();
+}
+
+void
+PlayField::nextLevel() {
+  if (levelMap_->level()+1 >= levelMap_->noOfLevels()) {
+    ModalLabel::message(i18n("\
+This is the last level in\n\
+the current collection."), this);
+    return;
+  }
+  if (levelMap_->level() >= levelMap_->completedLevels()) {
+    ModalLabel::message(i18n("\
+You have not completed\n\
+this level yet."), this);
+    return;
+  }
+
+  level(levelMap_->level()+1);
+  levelChange();
+  repaint(false);
+}
+
+void
+PlayField::previousLevel() {
+  if (levelMap_->level() <= 0) {
+    ModalLabel::message(i18n("\
+This is the first level in\n\
+the current collection."), this);
+    return;
+  }
+  level(levelMap_->level()-1);
+  levelChange();
+  repaint(false);
+}
+
+void
+PlayField::undo() {
+  if (!canMoveNow()) return;
+
+  startMoving(history_->deferUndo(levelMap_));
+}
+
+void
+PlayField::redo() {
+  if (!canMoveNow()) return;
+
+  startMoving(history_->deferRedo(levelMap_));
+}
+
+void
+PlayField::restartLevel() {
+  stopMoving();
+  history_->clear();
+  level(levelMap_->level());
+  updateStepsXpm();
+  updatePushesXpm();
+  repaint(false);
+}
+
+void
+PlayField::changeCollection(LevelCollection *collection) {
+  if (levelMap_->collection() == collection) return;
+  levelMap_->changeCollection(collection);
+  levelChange();
+  //erase(collRect_);
+  repaint(false);
+}
+
+void
+PlayField::updateCollectionXpm() {
+  if (collXpm_.isNull()) return;
+
+  QPainter paint(&collXpm_);
+  paint.setBrushOrigin(- collRect_.x(), - collRect_.y());
+  paint.fillRect(0, 0, collRect_.width(), collRect_.height(), background_);
+
+  paint.setFont(statusFont_);
+  paint.setPen(QColor(0,255,0));
+  paint.drawText(0, 0, collRect_.width(), collRect_.height(),
+		 AlignLeft, collectionName());
+}
+
+void
+PlayField::updateTextXpm() {
+  if (ltxtXpm_.isNull()) return;
+
+  QPainter paint;
+
+  paint.begin(&ltxtXpm_);
+  paint.setBrushOrigin(- ltxtRect_.x(), - ltxtRect_.y());
+  paint.fillRect(0, 0, ltxtRect_.width(), ltxtRect_.height(), background_);
+  paint.setFont(statusFont_);
+  paint.setPen(QColor(128,128,128));
+  paint.drawText(0, 0, ltxtRect_.width(), ltxtRect_.height(), AlignLeft, levelText_);
+  paint.end();
+
+  paint.begin(&stxtXpm_);
+  paint.setBrushOrigin(- stxtRect_.x(), - stxtRect_.y());
+  paint.fillRect(0, 0, stxtRect_.width(), stxtRect_.height(), background_);
+  paint.setFont(statusFont_);
+  paint.setPen(QColor(128,128,128));
+  paint.drawText(0, 0, stxtRect_.width(), stxtRect_.height(), AlignLeft, stepsText_);
+  paint.end();
+
+  paint.begin(&ptxtXpm_);
+  paint.setBrushOrigin(- ptxtRect_.x(), - ptxtRect_.y());
+  paint.fillRect(0, 0, ptxtRect_.width(), ptxtRect_.height(), background_);
+  paint.setFont(statusFont_);
+  paint.setPen(QColor(128,128,128));
+  paint.drawText(0, 0, ptxtRect_.width(), ptxtRect_.height(), AlignLeft, pushesText_);
+  paint.end();
+}
+
+void
+PlayField::updateLevelXpm() {
+  if (lnumXpm_.isNull()) return;
+
+  QPainter paint(&lnumXpm_);
+  paint.setBrushOrigin(- lnumRect_.x(), - lnumRect_.y());
+  paint.fillRect(0, 0, lnumRect_.width(), lnumRect_.height(), background_);
+
+  QString str;
+  paint.setFont(statusFont_);
+  paint.setPen(QColor(255,0,0));
+  paint.drawText(0, 0, lnumRect_.width(), lnumRect_.height(),
+		 AlignLeft, str.sprintf("%05d", level()+1));
+}
+
+void
+PlayField::updateStepsXpm() {
+  if (snumXpm_.isNull()) return;
+
+  QPainter paint(&snumXpm_);
+  paint.setBrushOrigin(- snumRect_.x(), - snumRect_.y());
+  paint.fillRect(0, 0, snumRect_.width(), snumRect_.height(), background_);
+
+  QString str;
+  paint.setFont(statusFont_);
+  paint.setPen(QColor(255,0,0));
+  paint.drawText(0, 0, snumRect_.width(), snumRect_.height(),
+		 AlignLeft, str.sprintf("%05d", totalMoves()));
+}
+
+void
+PlayField::updatePushesXpm() {
+  if (pnumXpm_.isNull()) return;
+
+  QPainter paint(&pnumXpm_);
+  paint.setBrushOrigin(- pnumRect_.x(), - pnumRect_.y());
+  paint.fillRect(0, 0, pnumRect_.width(), pnumRect_.height(), background_);
+
+  QString str;
+  paint.setFont(statusFont_);
+  paint.setPen(QColor(255,0,0));
+  paint.drawText(0, 0, pnumRect_.width(), pnumRect_.height(),
+		 AlignLeft, str.sprintf("%05d", totalPushes()));
+}
+
+
+void
+PlayField::changeAnim(int num)
+{
+  assert(num >= 0 && num <= 3);
+
+  animDelay_ = num;
+}
+
+// FIXME: clean up bookmark stuff
+
+// static const int bookmark_id[] = {
+//   0, 1, 8, 2, 9, 3, 5, 6, 7, 4
+// };
+
+void
+PlayField::setBookmark(Bookmark *bm) {
+  if (!levelMap_->goodLevel()) return;
+
+  if (collection()->id() < 0) {
+    KMessageBox::sorry(this, i18n("Sorry, bookmarks for external levels\n"
+				  "is not implemented yet."));
+    return;
+  }
+
+  bm->set(collection()->id(), levelMap_->level(), levelMap_->totalMoves(), history_);
+}
+
+void
+PlayField::goToBookmark(Bookmark *bm) {
+  level(bm->level());
+  levelChange();
+  if (!bm->goTo(levelMap_, history_)) fprintf(stderr, "Warning: bad bookmark\n");
+  //updateLevelXpm();
+  updateStepsXpm();
+  updatePushesXpm();
+  repaint(false);
+}
+
+bool
+PlayField::canMoveNow() {
+  if (moveInProgress_) return false;
+  if (!levelMap_->goodLevel()) {
+    ModalLabel::message(i18n("This level is broken"), this);
+    return false;
+  }
+  return true;
+}