kmag/kmagselrect.cpp

   1 /***************************************************************************
   2                           kmagselrect.cpp  -  description
   3                              -------------------
   4     begin                : Mon Feb 12 23:45:41 EST 2001
   5     copyright            : (C) 2001-2003 by Sarang Lakare
   6     email                : sarang#users.sf.net
   7     copyright            : (C) 2003-2004 by Olaf Schmidt
   8     email                : ojschmidt@kde.org
   9  ***************************************************************************/
  10
  11 /***************************************************************************
  12  *                                                                         *
  13  *   This program is free software; you can redistribute it and/or modify  *
  14  *   it under the terms of the GNU General Public License as published by  *
  15  *   the Free Software Foundation; either version 2 of the License, or     *
  16  *   (at your option) any later version.                                   *
  17  *                                                                         *
  18  ***************************************************************************/
  19
  20 #include "kmagselrect.h"
  21 #include "kmagselrect.moc"
  22
  23 #include <QApplication>
  24 #include <QCursor>
  25 #include <QPixmap>
  26 #include <QBitmap>
  27 //Added by qt3to4:
  28 #include <QMouseEvent>
  29 #include <QLabel>
  30 #include <QDesktopWidget>
  31 #include <kapplication.h>
  32 #include <klocale.h>
  33
  34 static uchar line_bits[] = {0x2d, 0x96, 0x4b, 0xa5, 0xd2, 0x69, 0xb4, 0x5a};
  35
  36 static QColor titleColor = QColor (0,0,128);
  37 static QColor titleBtnColor = QColor (255,255,0);
  38 static QColor textColor = QColor (255,255,255);
  39
  40 static int frameSize = 10;
  41 static int titleSize = 24;
  42
  43 void setTitleColors (QColor title, QColor text, QColor titleBtn)
  44 {
  45   titleColor = title;
  46   titleBtnColor = titleBtn;
  47   textColor = text;
  48 }
  49
  50 void setFrameSize (int size)
  51 {
  52   frameSize = size;
  53 }
  54
  55 void setTitleSize (int size)
  56 {
  57   titleSize = size;
  58 }
  59
  60 QColor getTitleColor ()
  61 {
  62   return titleColor;
  63 }
  64
  65 QColor getTitleBtnColor ()
  66 {
  67   return titleBtnColor;
  68 }
  69
  70 QColor getTextColor ()
  71 {
  72   return textColor;
  73 }
  74
  75 int getFrameSize ()
  76 {
  77   return frameSize;
  78 }
  79
  80 int getTitleSize ()
  81 {
  82   if (titleSize > frameSize)
  83     return titleSize;
  84   else
  85     return frameSize;
  86 }
  87
  88 //--------------------------------------------------------------------------
  89 //   Construction
  90 //--------------------------------------------------------------------------
  91
  92 KMagSelRect::KMagSelRect(QWidget *parent) :
  93   QRect()
  94 {
  95   init(parent);
  96 }
  97
  98 KMagSelRect::KMagSelRect(const QPoint &topLeft, const QPoint &bottomRight,
  99                  QWidget *parent) :
 100 QRect(topLeft, bottomRight)
 101 {
 102   init(parent);
 103 }
 104
 105 KMagSelRect::KMagSelRect(const QPoint &topLeft, const QSize &size,
 106                  QWidget *parent) :
 107 QRect(topLeft, size)
 108 {
 109   init(parent);
 110 }
 111
 112 KMagSelRect::KMagSelRect(int left, int top, int width, int height,
 113                  QWidget *parent) :
 114 QRect(left, top, width, height)
 115 {
 116   init(parent);
 117 }
 118
 119 void KMagSelRect::init(QWidget *parent)
 120 {
 121   // Make sure parent is the window itself, not a widget within the window
 122   if (parent != 0)
 123     while (parent->parentWidget (true) != 0)
 124       parent=parent->parentWidget (true);
 125
 126   selectionwindow = 0;
 127   selWindowParent = parent;
 128
 129   m_alwaysVisible = false;
 130 }
 131
 132 KMagSelRect::~KMagSelRect()
 133 {
 134 }
 135
 136 //--------------------------------------------------------------------------
 137 //
 138 //--------------------------------------------------------------------------
 139
 140 bool KMagSelRect::visible()
 141 {
 142   return (selectionwindow != 0);
 143 }
 144
 145 void KMagSelRect::alwaysVisible(bool visible)
 146 {
 147   m_alwaysVisible = visible;
 148 }
 149
 150
 151 //--------------------------------------------------------------------------
 152 //   Slots
 153 //--------------------------------------------------------------------------
 154
 155 void KMagSelRect::show()
 156 {
 157   if (selectionwindow == 0) {
 158     selectionwindow = new KMagSelWin (selWindowParent);
 159     selectionwindow->setObjectName("selectionwindow");
 160     connect (selectionwindow, SIGNAL (resized ()), this, SLOT (selWinResized ()));
 161
 162     update();
 163     selectionwindow->show();
 164     selWindowParent->setActiveWindow();
 165   }
 166 }
 167
 168 void KMagSelRect::hide()
 169 {
 170   if(m_alwaysVisible)
 171     return;
 172   if (selectionwindow != 0) {
 173     selectionwindow->hide();
 174     delete selectionwindow;
 175     selectionwindow = 0;
 176   }
 177 }
 178
 179 void KMagSelRect::update()
 180 {
 181   if (selectionwindow != 0)
 182     selectionwindow->setSelRect (QRect (topLeft(), bottomRight()));
 183 }
 184
 185 void KMagSelRect::selWinResized()
 186 {
 187   if (selectionwindow != 0)
 188   {
 189     QRect newRect = selectionwindow->getSelRect();
 190     setRect (newRect.x(), newRect.y(), newRect.width(), newRect.height());
 191   }
 192 }
 193
 194 //--------------------------------------------------------------------------
 195 //   KMagSelWin
 196 //--------------------------------------------------------------------------
 197
 198 KMagSelWin::KMagSelWin ( QWidget * parent, Qt::WFlags ) :
 199     QWidget (parent, Qt::WStyle_Customize | Qt::WStyle_NoBorder | Qt::WStyle_StaysOnTop | Qt::WType_TopLevel | Qt::WX11BypassWM)
 200 {
 201   QBitmap line = QBitmap::fromData( QSize(8,  8),  line_bits);
 202   setPaletteBackgroundPixmap (line);
 203   setBackgroundOrigin (QWidget::WindowOrigin);
 204
 205   titleBar = new KMagSelWinCorner (this);
 206   titleBar->setObjectName("titlebar");
 207   titleBar->setPaletteBackgroundColor (getTitleColor ());
 208   titleBar->setPaletteForegroundColor (getTextColor ());
 209   titleBar->setText(i18n("Selection Window")+" - "+i18n("KMagnifier"));
 210   connect (titleBar, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 211   connect (titleBar, SIGNAL (resized (QPoint)), this, SLOT (titleMoved (QPoint)));
 212
 213   topLeftCorner = new KMagSelWinCorner (this);
 214   topLeftCorner->setObjectName("topleft");
 215   topLeftCorner->setCursor (Qt::SizeFDiagCursor);
 216   topLeftCorner->setPaletteBackgroundColor (getTitleBtnColor ());
 217   connect (topLeftCorner, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 218   connect (topLeftCorner, SIGNAL (resized (QPoint)), this, SLOT (topLeftResized (QPoint)));
 219
 220   topRightCorner = new KMagSelWinCorner (this);
 221   topRightCorner->setObjectName("topright");
 222   topRightCorner->setCursor (Qt::SizeBDiagCursor);
 223   topRightCorner->setPaletteBackgroundColor (getTitleBtnColor ());
 224   connect (topRightCorner, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 225   connect (topRightCorner, SIGNAL (resized (QPoint)), this, SLOT (topRightResized (QPoint)));
 226
 227   bottomLeftCorner = new KMagSelWinCorner (this);
 228   bottomLeftCorner->setObjectName("bottomleft");
 229   bottomLeftCorner->setCursor (Qt::SizeBDiagCursor);
 230   bottomLeftCorner->setPaletteBackgroundColor (getTitleBtnColor ());
 231   connect (bottomLeftCorner, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 232   connect (bottomLeftCorner, SIGNAL (resized (QPoint)), this, SLOT (bottomLeftResized (QPoint)));
 233
 234   bottomRightCorner = new KMagSelWinCorner (this);
 235   bottomRightCorner->setObjectName("bottomright");
 236   bottomRightCorner->setCursor (Qt::SizeFDiagCursor);
 237   bottomRightCorner->setPaletteBackgroundColor (getTitleBtnColor ());
 238   connect (bottomRightCorner, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 239   connect (bottomRightCorner, SIGNAL (resized (QPoint)), this, SLOT (bottomRightResized (QPoint)));
 240 }
 241
 242 KMagSelWin::~KMagSelWin()
 243 {
 244   delete titleBar;
 245   delete topLeftCorner;
 246   delete topRightCorner;
 247   delete bottomLeftCorner;
 248   delete bottomRightCorner;
 249 }
 250
 251 void KMagSelWin::setSelRect (QRect selRect)
 252 {
 253   selRect = selRect.normalize();
 254
 255   if (selRect.left() < 0)
 256     selRect.setLeft (0);
 257   if (selRect.top() < 0)
 258     selRect.setTop (0);
 259   if (selRect.right() > QApplication::desktop()->width())
 260     selRect.setRight (QApplication::desktop()->width());
 261   if (selRect.bottom() > QApplication::desktop()->height())
 262     selRect.setBottom (QApplication::desktop()->height());
 263
 264   setGeometry (
 265       selRect.left() - getFrameSize(),
 266       selRect.top() - getTitleSize() - 2,
 267       selRect.width() + getFrameSize() + getFrameSize(),
 268       selRect.height() + getFrameSize() + getTitleSize()+2);
 269
 270   int w = getFrameSize();
 271   if (selRect.width() < w+w)
 272     w = static_cast<int>(selRect.width()/2);
 273
 274   int h = getFrameSize();
 275   if (selRect.height() < h+h)
 276     h = static_cast<int>(selRect.height()/2);
 277
 278   setMask (QRegion (QRect (0, 0, width(), height ()))
 279            - QRegion (QRect (getFrameSize(), getTitleSize()+2, selRect.width(), selRect.height()))
 280            - QRegion (QRect (0, 0, getFrameSize()+w, getTitleSize()+2-getFrameSize()))
 281            - QRegion (QRect (width()-getFrameSize()-w, 0, getFrameSize()+w, getTitleSize()+2-getFrameSize()))
 282            - QRegion (QRect (0, getTitleSize()+2+h, getFrameSize()-2, selRect.height()-h-h))
 283            - QRegion (QRect (width()-getFrameSize()+2, getTitleSize()+2+h, getFrameSize()-2, selRect.height()-h-h))
 284            - QRegion (QRect (getFrameSize()+w, height()-getFrameSize()+2, selRect.width()-w-w, getFrameSize()-2)));
 285
 286   titleBar->setGeometry (getFrameSize()+w, 0, selRect.width()-h-h, getTitleSize());
 287   topLeftCorner->setGeometry (0, getTitleSize()+2-getFrameSize(), getFrameSize()+w, getFrameSize()+h);
 288   topRightCorner->setGeometry (width()-getFrameSize()-w, getTitleSize()+2-getFrameSize(), getFrameSize()+w, getFrameSize()+h);
 289   bottomLeftCorner->setGeometry (0, height()-getFrameSize()-h, getFrameSize()+w, getFrameSize()+h);
 290   bottomRightCorner->setGeometry (width()-getFrameSize()-w, height()-getFrameSize()-h, getFrameSize()+w, getFrameSize()+h);
 291 }
 292
 293 QRect KMagSelWin::getSelRect ()
 294 {
 295   return QRect (
 296       x() + getFrameSize(),
 297       y() + getTitleSize()+2,
 298       width() - getFrameSize() - getFrameSize(),
 299       height() - getFrameSize() - getTitleSize()-2);
 300 }
 301
 302 void KMagSelWin::startResizing ()
 303 {
 304   oldSelRect = getSelRect();
 305 }
 306
 307 void KMagSelWin::titleMoved ( QPoint offset )
 308 {
 309   QRect selRect = oldSelRect;
 310   selRect.translate (offset.x(), offset.y());
 311   setSelRect (selRect);
 312   emit resized ();
 313 }
 314
 315 void KMagSelWin::topLeftResized ( QPoint offset )
 316 {
 317   setSelRect (QRect(oldSelRect.topLeft() + offset, oldSelRect.bottomRight ()));
 318   emit resized();
 319 }
 320
 321 void KMagSelWin::topRightResized ( QPoint offset )
 322 {
 323   setSelRect (QRect(oldSelRect.topRight() + offset, oldSelRect.bottomLeft ()));
 324   emit resized();
 325 }
 326
 327 void KMagSelWin::bottomLeftResized ( QPoint offset )
 328 {
 329   setSelRect (QRect(oldSelRect.bottomLeft() + offset, oldSelRect.topRight ()));
 330   emit resized();
 331 }
 332
 333 void KMagSelWin::bottomRightResized ( QPoint offset )
 334 {
 335   setSelRect (QRect(oldSelRect.bottomRight() + offset, oldSelRect.topLeft()));
 336   emit resized();
 337 }
 338
 339
 340 //--------------------------------------------------------------------------
 341 //   KMagSelWinCorner
 342 //--------------------------------------------------------------------------
 343
 344 KMagSelWinCorner::KMagSelWinCorner ( QWidget * parent, Qt::WFlags f ) :
 345     QLabel (parent, f)
 346 {
 347   setBackgroundMode (Qt::FixedColor);
 348   setFrameStyle (QFrame::WinPanel | QFrame::Raised);
 349   setLineWidth (1);
 350 }
 351
 352 KMagSelWinCorner::~KMagSelWinCorner()
 353 {
 354 }
 355
 356 void KMagSelWinCorner::mousePressEvent ( QMouseEvent * e )
 357 {
 358   oldPos = e->globalPos ();
 359   emit startResizing ();
 360 }
 361
 362 void KMagSelWinCorner::mouseReleaseEvent ( QMouseEvent * e )
 363 {
 364   setFrameShadow (QFrame::Raised);
 365   emit resized (e->globalPos () - oldPos);
 366 }
 367
 368 void KMagSelWinCorner::mouseMoveEvent ( QMouseEvent * e )
 369 {
 370   emit resized (e->globalPos () - oldPos);
 371 }