src/XGUI/XGUI_Workbench.cpp

   1 #include "XGUI_Workbench.h"
   2 #include "XGUI_MenuGroupPanel.h"
   3
   4 #include <QLayout>
   5 #include <QResizeEvent>
   6 #include <QPushButton>
   7
   8
   9 #define SCROLL_STEP 20
  10
  11 //**************************************************
  12 class CommandsArea : public QScrollArea
  13 {
  14 public:
  15     CommandsArea(QWidget* theParent) : QScrollArea(theParent) {}
  16
  17 protected:
  18     virtual void resizeEvent(QResizeEvent * theEvent);
  19 };
  20
  21 void CommandsArea::resizeEvent(QResizeEvent* theEvent)
  22 {
  23     QScrollArea::resizeEvent(theEvent);
  24     QRect aRect = widget()->childrenRect();
  25     QSize aNewSize = theEvent->size();
  26     if (aRect.width() > aNewSize.width())
  27         aNewSize.setWidth(aRect.width() * 2);
  28     widget()->resize(aNewSize);
  29 }
  30
  31
  32 //**************************************************
  33 XGUI_Workbench::XGUI_Workbench(QWidget *theParent) :
  34     QWidget(theParent)
  35 {
  36     setMinimumHeight(30);
  37     QHBoxLayout* aMainLayout = new QHBoxLayout(this);
  38     aMainLayout->setSpacing(0);
  39     aMainLayout->setMargin(0);
  40     aMainLayout->setContentsMargins(0,0,0,0);
  41
  42     myLeftButton = new QPushButton("<", this);
  43     myLeftButton->setMaximumWidth(14);
  44     //myLeftButton->setEnabled(false);
  45     myLeftButton->setVisible(false);
  46     connect(myLeftButton,SIGNAL(clicked()), this, SLOT(onLeftScroll()));
  47     aMainLayout->addWidget(myLeftButton);
  48
  49     myCommandsArea = new CommandsArea(this);
  50     aMainLayout->addWidget(myCommandsArea);
  51
  52     myChildWidget = new QWidget(myCommandsArea);
  53     myCommandsArea->setWidget(myChildWidget);
  54     myCommandsArea->setAlignment(Qt::AlignLeft | Qt::AlignTop);
  55     myCommandsArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  56     myCommandsArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  57
  58     myLayout = new QHBoxLayout(myChildWidget);
  59     myLayout->setSpacing(0);
  60     myLayout->setMargin(0);
  61     myLayout->setContentsMargins(0,0,0,0);
  62
  63     myRightButton = new QPushButton(">", this);
  64     myRightButton->setMaximumWidth(14);
  65     //myRightButton->setEnabled(false);
  66     myRightButton->setVisible(false);
  67     connect(myRightButton,SIGNAL(clicked()), this, SLOT(onRightScroll()));
  68     aMainLayout->addWidget(myRightButton);
  69
  70 }
  71
  72 int XGUI_Workbench::addGroup()
  73 {
  74     if (!myLayout->isEmpty()) {
  75         int aNb = myLayout->count();
  76         QLayoutItem* aItem = myLayout->itemAt(aNb - 1);
  77         myLayout->removeItem(aItem);
  78     }
  79     XGUI_MenuGroupPanel* aGroup = new XGUI_MenuGroupPanel(myChildWidget);
  80     myLayout->addWidget(aGroup);
  81     addSeparator();
  82     myLayout->addStretch();
  83     myGroups.append(aGroup);
  84     return myGroups.size() - 1;
  85 }
  86
  87 void XGUI_Workbench::addSeparator()
  88 {
  89     QFrame* aLine = new QFrame(myChildWidget);
  90     aLine->setFrameShape(QFrame::VLine);
  91     aLine->setFrameShadow(QFrame::Sunken);
  92     myLayout->addWidget(aLine);
  93 }
  94
  95 void XGUI_Workbench::addCommand(int theGroupId, XGUI_Command* theCommand)
  96 {
  97     XGUI_MenuGroupPanel* aGroup = myGroups.at(theGroupId);
  98     aGroup->addCommand(theCommand);
  99 }
 100
 101
 102 void XGUI_Workbench::resizeEvent(QResizeEvent* theEvent)
 103 {
 104     QWidget::resizeEvent(theEvent);
 105     QSize aSize = theEvent->size();
 106     myLeftButton->setMinimumHeight(aSize.height() - 2);
 107     myRightButton->setMinimumHeight(aSize.height() - 2);
 108
 109     QSize aS = myChildWidget->sizeHint();
 110         int aW = myChildWidget->width();
 111         if (aW < aS.width())
 112                 myChildWidget->resize(aS.width(), myChildWidget->height());
 113
 114     //myLeftButton->setEnabled(isExceedsLeft());
 115     //myRightButton->setEnabled(isExceedsRight());
 116     myLeftButton->setVisible(isExceedsLeft());
 117     myRightButton->setVisible(isExceedsRight());
 118 }
 119
 120
 121 void XGUI_Workbench::onLeftScroll()
 122 {
 123     if (!isExceedsLeft())
 124                 return;
 125     myChildWidget->move( myChildWidget->pos().x() + SCROLL_STEP, 0 );
 126     myLeftButton->setVisible(isExceedsLeft());
 127     myRightButton->setVisible(isExceedsRight());
 128     //myLeftButton->setEnabled(isExceedsLeft());
 129     //myRightButton->setEnabled(isExceedsRight());
 130 }
 131
 132
 133 void XGUI_Workbench::onRightScroll()
 134 {
 135     if (!isExceedsRight())
 136                 return;
 137     myChildWidget->move( myChildWidget->pos().x() - SCROLL_STEP, 0 );
 138     //myLeftButton->setEnabled(isExceedsLeft());
 139     //myRightButton->setEnabled(isExceedsRight());
 140     myLeftButton->setVisible(isExceedsLeft());
 141     myRightButton->setVisible(isExceedsRight());
 142 }
 143
 144
 145 bool XGUI_Workbench::isExceedsLeft()
 146 {
 147     QPoint aPos = myChildWidget->pos();
 148     return (aPos.x() < 0);
 149 }
 150
 151 bool XGUI_Workbench::isExceedsRight()
 152 {
 153     QPoint aPos = myChildWidget->pos();
 154     int aVPWidth = myCommandsArea->viewport()->rect().width();
 155     int aWgtWidth = myChildWidget->childrenRect().width();
 156     return ((aVPWidth - aPos.x()) < aWgtWidth);
 157 }