juce/source/src/gui/components/layout/juce_StretchableLayoutResizerBar.cpp

   1 /*
   2   ==============================================================================
   3
   4    This file is part of the JUCE library - "Jules' Utility Class Extensions"
   5    Copyright 2004-11 by Raw Material Software Ltd.
   6
   7   ------------------------------------------------------------------------------
   8
   9    JUCE can be redistributed and/or modified under the terms of the GNU General
  10    Public License (Version 2), as published by the Free Software Foundation.
  11    A copy of the license is included in the JUCE distribution, or can be found
  12    online at www.gnu.org/licenses.
  13
  14    JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
  15    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  16    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  17
  18   ------------------------------------------------------------------------------
  19
  20    To release a closed-source product which uses JUCE, commercial licenses are
  21    available: visit www.rawmaterialsoftware.com/juce for more information.
  22
  23   ==============================================================================
  24 */
  25
  26 #include "../../../core/juce_StandardHeader.h"
  27
  28 BEGIN_JUCE_NAMESPACE
  29
  30 #include "juce_StretchableLayoutResizerBar.h"
  31 #include "../lookandfeel/juce_LookAndFeel.h"
  32
  33
  34 //==============================================================================
  35 StretchableLayoutResizerBar::StretchableLayoutResizerBar (StretchableLayoutManager* layout_,
  36                                                           const int itemIndex_,
  37                                                           const bool isVertical_)
  38     : layout (layout_),
  39       itemIndex (itemIndex_),
  40       isVertical (isVertical_)
  41 {
  42     setRepaintsOnMouseActivity (true);
  43     setMouseCursor (MouseCursor (isVertical_ ? MouseCursor::LeftRightResizeCursor
  44                                              : MouseCursor::UpDownResizeCursor));
  45 }
  46
  47 StretchableLayoutResizerBar::~StretchableLayoutResizerBar()
  48 {
  49 }
  50
  51 //==============================================================================
  52 void StretchableLayoutResizerBar::paint (Graphics& g)
  53 {
  54     getLookAndFeel().drawStretchableLayoutResizerBar (g,
  55                                                       getWidth(), getHeight(),
  56                                                       isVertical,
  57                                                       isMouseOver(),
  58                                                       isMouseButtonDown());
  59 }
  60
  61 void StretchableLayoutResizerBar::mouseDown (const MouseEvent&)
  62 {
  63     mouseDownPos = layout->getItemCurrentPosition (itemIndex);
  64 }
  65
  66 void StretchableLayoutResizerBar::mouseDrag (const MouseEvent& e)
  67 {
  68     const int desiredPos = mouseDownPos + (isVertical ? e.getDistanceFromDragStartX()
  69                                                       : e.getDistanceFromDragStartY());
  70
  71
  72     if (layout->getItemCurrentPosition (itemIndex) != desiredPos)
  73     {
  74         layout->setItemPosition (itemIndex, desiredPos);
  75         hasBeenMoved();
  76     }
  77 }
  78
  79 void StretchableLayoutResizerBar::hasBeenMoved()
  80 {
  81     if (getParentComponent() != nullptr)
  82         getParentComponent()->resized();
  83 }
  84
  85 END_JUCE_NAMESPACE