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.h>
  24 #include <qcursor.h>
  25 #include <qpixmap.h>
  26 #include <qbitmap.h>
  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, "selectionwindow");
 159     connect (selectionwindow, SIGNAL (resized ()), this, SLOT (selWinResized ()));
 160
 161     update();
 162     selectionwindow->show();
 163     selWindowParent->setActiveWindow();
 164   }
 165 }
 166
 167 void KMagSelRect::hide()
 168 {
 169   if(m_alwaysVisible)
 170     return;
 171   if (selectionwindow != 0) {
 172     selectionwindow->hide();
 173     delete selectionwindow;
 174     selectionwindow = 0;
 175   }
 176 }
 177
 178 void KMagSelRect::update()
 179 {
 180   if (selectionwindow != 0)
 181     selectionwindow->setSelRect (QRect (topLeft(), bottomRight()));
 182 }
 183
 184 void KMagSelRect::selWinResized()
 185 {
 186   if (selectionwindow != 0)
 187   {
 188     QRect newRect = selectionwindow->getSelRect();
 189     setRect (newRect.x(), newRect.y(), newRect.width(), newRect.height());
 190   }
 191 }
 192
 193 //--------------------------------------------------------------------------
 194 //   KMagSelWin
 195 //--------------------------------------------------------------------------
 196
 197 KMagSelWin::KMagSelWin ( QWidget * parent, const char * name, Qt::WFlags ) :
 198     QWidget (parent, name, Qt::WStyle_Customize | Qt::WStyle_NoBorder | Qt::WStyle_StaysOnTop | Qt::WType_TopLevel | Qt::WX11BypassWM)
 199 {
 200   QBitmap line (8, 8, line_bits, true);
 201   setPaletteBackgroundPixmap (line);
 202   setBackgroundOrigin (QWidget::WindowOrigin);
 203
 204   titleBar = new KMagSelWinCorner (this, "titlebar");
 205   titleBar->setPaletteBackgroundColor (getTitleColor ());
 206   titleBar->setPaletteForegroundColor (getTextColor ());
 207   titleBar->setText(i18n("Selection Window")+" - "+i18n("KMagnifier"));
 208   connect (titleBar, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 209   connect (titleBar, SIGNAL (resized (QPoint)), this, SLOT (titleMoved (QPoint)));
 210
 211   topLeftCorner = new KMagSelWinCorner (this, "topleft");
 212   topLeftCorner->setCursor (Qt::SizeFDiagCursor);
 213   topLeftCorner->setPaletteBackgroundColor (getTitleBtnColor ());
 214   connect (topLeftCorner, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 215   connect (topLeftCorner, SIGNAL (resized (QPoint)), this, SLOT (topLeftResized (QPoint)));
 216
 217   topRightCorner = new KMagSelWinCorner (this, "topright");
 218   topRightCorner->setCursor (Qt::SizeBDiagCursor);
 219   topRightCorner->setPaletteBackgroundColor (getTitleBtnColor ());
 220   connect (topRightCorner, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 221   connect (topRightCorner, SIGNAL (resized (QPoint)), this, SLOT (topRightResized (QPoint)));
 222
 223   bottomLeftCorner = new KMagSelWinCorner (this, "bottomleft");
 224   bottomLeftCorner->setCursor (Qt::SizeBDiagCursor);
 225   bottomLeftCorner->setPaletteBackgroundColor (getTitleBtnColor ());
 226   connect (bottomLeftCorner, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 227   connect (bottomLeftCorner, SIGNAL (resized (QPoint)), this, SLOT (bottomLeftResized (QPoint)));
 228
 229   bottomRightCorner = new KMagSelWinCorner (this, "bottomright");
 230   bottomRightCorner->setCursor (Qt::SizeFDiagCursor);
 231   bottomRightCorner->setPaletteBackgroundColor (getTitleBtnColor ());
 232   connect (bottomRightCorner, SIGNAL (startResizing ()), this, SLOT (startResizing ()));
 233   connect (bottomRightCorner, SIGNAL (resized (QPoint)), this, SLOT (bottomRightResized (QPoint)));
 234 }
 235
 236 KMagSelWin::~KMagSelWin()
 237 {
 238   delete titleBar;
 239   delete topLeftCorner;
 240   delete topRightCorner;
 241   delete bottomLeftCorner;
 242   delete bottomRightCorner;
 243 }
 244
 245 void KMagSelWin::setSelRect (QRect selRect)
 246 {
 247   selRect = selRect.normalize();
 248
 249   if (selRect.left() < 0)
 250     selRect.setLeft (0);
 251   if (selRect.top() < 0)
 252     selRect.setTop (0);
 253   if (selRect.right() > QApplication::desktop()->width())
 254     selRect.setRight (QApplication::desktop()->width());
 255   if (selRect.bottom() > QApplication::desktop()->height())
 256     selRect.setBottom (QApplication::desktop()->height());
 257
 258   setGeometry (
 259       selRect.left() - getFrameSize(),
 260       selRect.top() - getTitleSize() - 2,
 261       selRect.width() + getFrameSize() + getFrameSize(),
 262       selRect.height() + getFrameSize() + getTitleSize()+2);
 263
 264   int w = getFrameSize();
 265   if (selRect.width() < w+w)
 266     w = static_cast<int>(selRect.width()/2);
 267
 268   int h = getFrameSize();
 269   if (selRect.height() < h+h)
 270     h = static_cast<int>(selRect.height()/2);
 271
 272   setMask (QRegion (QRect (0, 0, width(), height ()))
 273            - QRegion (QRect (getFrameSize(), getTitleSize()+2, selRect.width(), selRect.height()))
 274            - QRegion (QRect (0, 0, getFrameSize()+w, getTitleSize()+2-getFrameSize()))
 275            - QRegion (QRect (width()-getFrameSize()-w, 0, getFrameSize()+w, getTitleSize()+2-getFrameSize()))
 276            - QRegion (QRect (0, getTitleSize()+2+h, getFrameSize()-2, selRect.height()-h-h))
 277            - QRegion (QRect (width()-getFrameSize()+2, getTitleSize()+2+h, getFrameSize()-2, selRect.height()-h-h))
 278            - QRegion (QRect (getFrameSize()+w, height()-getFrameSize()+2, selRect.width()-w-w, getFrameSize()-2)));
 279
 280   titleBar->setGeometry (getFrameSize()+w, 0, selRect.width()-h-h, getTitleSize());
 281   topLeftCorner->setGeometry (0, getTitleSize()+2-getFrameSize(), getFrameSize()+w, getFrameSize()+h);
 282   topRightCorner->setGeometry (width()-getFrameSize()-w, getTitleSize()+2-getFrameSize(), getFrameSize()+w, getFrameSize()+h);
 283   bottomLeftCorner->setGeometry (0, height()-getFrameSize()-h, getFrameSize()+w, getFrameSize()+h);
 284   bottomRightCorner->setGeometry (width()-getFrameSize()-w, height()-getFrameSize()-h, getFrameSize()+w, getFrameSize()+h);
 285 }
 286
 287 QRect KMagSelWin::getSelRect ()
 288 {
 289   return QRect (
 290       x() + getFrameSize(),
 291       y() + getTitleSize()+2,
 292       width() - getFrameSize() - getFrameSize(),
 293       height() - getFrameSize() - getTitleSize()-2);
 294 }
 295
 296 void KMagSelWin::startResizing ()
 297 {
 298   oldSelRect = getSelRect();
 299 }
 300
 301 void KMagSelWin::titleMoved ( QPoint offset )
 302 {
 303   QRect selRect = oldSelRect;
 304   selRect.moveBy (offset.x(), offset.y());
 305   setSelRect (selRect);
 306   emit resized ();
 307 }
 308
 309 void KMagSelWin::topLeftResized ( QPoint offset )
 310 {
 311   setSelRect (QRect(oldSelRect.topLeft() + offset, oldSelRect.bottomRight ()));
 312   emit resized();
 313 }
 314
 315 void KMagSelWin::topRightResized ( QPoint offset )
 316 {
 317   setSelRect (QRect(oldSelRect.topRight() + offset, oldSelRect.bottomLeft ()));
 318   emit resized();
 319 }
 320
 321 void KMagSelWin::bottomLeftResized ( QPoint offset )
 322 {
 323   setSelRect (QRect(oldSelRect.bottomLeft() + offset, oldSelRect.topRight ()));
 324   emit resized();
 325 }
 326
 327 void KMagSelWin::bottomRightResized ( QPoint offset )
 328 {
 329   setSelRect (QRect(oldSelRect.bottomRight() + offset, oldSelRect.topLeft()));
 330   emit resized();
 331 }
 332
 333
 334 //--------------------------------------------------------------------------
 335 //   KMagSelWinCorner
 336 //--------------------------------------------------------------------------
 337
 338 KMagSelWinCorner::KMagSelWinCorner ( QWidget * parent, const char * name, Qt::WFlags f ) :
 339     QLabel (parent, name, f)
 340 {
 341   setBackgroundMode (Qt::FixedColor);
 342   setFrameStyle (QFrame::WinPanel | QFrame::Raised);
 343   setLineWidth (1);
 344 }
 345
 346 KMagSelWinCorner::~KMagSelWinCorner()
 347 {
 348 }
 349
 350 void KMagSelWinCorner::mousePressEvent ( QMouseEvent * e )
 351 {
 352   oldPos = e->globalPos ();
 353   emit startResizing ();
 354 }
 355
 356 void KMagSelWinCorner::mouseReleaseEvent ( QMouseEvent * e )
 357 {
 358   setFrameShadow (QFrame::Raised);
 359   emit resized (e->globalPos () - oldPos);
 360 }
 361
 362 void KMagSelWinCorner::mouseMoveEvent ( QMouseEvent * e )
 363 {
 364   emit resized (e->globalPos () - oldPos);
 365 }