kolourpaint/tools/kpToolColorPicker.h

   1
   2 /*
   3    Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
   4    All rights reserved.
   5
   6    Redistribution and use in source and binary forms, with or without
   7    modification, are permitted provided that the following conditions
   8    are met:
   9
  10    1. Redistributions of source code must retain the above copyright
  11       notice, this list of conditions and the following disclaimer.
  12    2. Redistributions in binary form must reproduce the above copyright
  13       notice, this list of conditions and the following disclaimer in the
  14       documentation and/or other materials provided with the distribution.
  15
  16    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26 */
  27
  28
  29 #ifndef KP_TOOL_COLOR_PICKER_H
  30 #define KP_TOOL_COLOR_PICKER_H
  31
  32
  33 #include <kpColor.h>
  34 #include <kpTool.h>
  35
  36
  37 class QPoint;
  38 class QRect;
  39
  40
  41 class kpToolColorPicker : public kpTool
  42 {
  43 Q_OBJECT
  44
  45 public:
  46     kpToolColorPicker (kpToolEnvironment *environ, QObject *parent);
  47     virtual ~kpToolColorPicker ();
  48
  49     // generally the user goes to pick a color but wants to return to using
  50     // his/her previous drawing tool
  51     virtual bool returnToPreviousToolAfterEndDraw () const { return true; }
  52
  53 private:
  54     kpColor colorAtPixel (const QPoint &p);
  55
  56     QString haventBegunDrawUserMessage () const;
  57
  58 public:
  59     virtual void begin ();
  60     virtual void beginDraw ();
  61     virtual void draw (const QPoint &thisPoint, const QPoint &, const QRect &);
  62     virtual void cancelShape ();
  63     virtual void releasedAllButtons ();
  64     virtual void endDraw (const QPoint &thisPoint, const QRect &);
  65
  66 private:
  67     kpColor m_oldColor;
  68 };
  69
  70
  71 #endif  // KP_TOOL_COLOR_PICKER_H