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     int x = widget()->x();
  24     QScrollArea::resizeEvent(theEvent);
  25     QRect aRect = widget()->childrenRect();
  26     QSize aNewSize = theEvent->size();
  27     if (aRect.width() > aNewSize.width())
  28         aNewSize.setWidth(aRect.width() * 2);
  29     widget()->resize(aNewSize);
  30     widget()->move(x, 0);
  31 }
  32
  33
  34 //**************************************************
  35 XGUI_Workbench::XGUI_Workbench(QWidget *theParent) :
  36     QWidget(theParent)
  37 {
  38     setMinimumHeight(30);
  39     QHBoxLayout* aMainLayout = new QHBoxLayout(this);
  40     aMainLayout->setSpacing(0);
  41     aMainLayout->setMargin(0);
  42     aMainLayout->setContentsMargins(0,0,0,0);
  43
  44     myLeftButton = new QPushButton("<", this);
  45     myLeftButton->setMaximumWidth(14);
  46     myLeftButton->setVisible(false);
  47     connect(myLeftButton,SIGNAL(clicked()), this, SLOT(onLeftScroll()));
  48     aMainLayout->addWidget(myLeftButton);
  49
  50     myCommandsArea = new CommandsArea(this);
  51     aMainLayout->addWidget(myCommandsArea);
  52
  53     myChildWidget = new QWidget(myCommandsArea);
  54     myCommandsArea->setWidget(myChildWidget);
  55     myCommandsArea->setAlignment(Qt::AlignLeft | Qt::AlignTop);
  56     myCommandsArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  57     myCommandsArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  58
  59     myLayout = new QHBoxLayout(myChildWidget);
  60     myLayout->setSpacing(0);
  61     myLayout->setMargin(0);
  62     myLayout->setContentsMargins(0,0,0,0);
  63
  64     myRightButton = new QPushButton(">", this);
  65     myRightButton->setMaximumWidth(14);
  66     myRightButton->setVisible(false);
  67     connect(myRightButton,SIGNAL(clicked()), this, SLOT(onRightScroll()));
  68     aMainLayout->addWidget(myRightButton);
  69
  70 }
  71
  72 /*
  73  * Creates a new group in the workbench with given name.
  74  * If no name provided it would be defined as {workbench_name}_Group_N.
  75  */
  76 XGUI_MenuGroupPanel* XGUI_Workbench::addGroup(const QString& theName)
  77 {
  78     QString aGroupName = theName;
  79     //Generate a group name.
  80     if(theName.isEmpty()){
  81       QString aGroupName = objectName();
  82       aGroupName = aGroupName.replace("_Workbench", "_Group_%1");
  83       aGroupName = aGroupName.arg(myGroups.count());
  84     }
  85     if (!myLayout->isEmpty()) {
  86         int aNb = myLayout->count();
  87         QLayoutItem* aItem = myLayout->itemAt(aNb - 1);
  88         myLayout->removeItem(aItem);
  89     }
  90     XGUI_MenuGroupPanel* aGroup = new XGUI_MenuGroupPanel(myChildWidget);
  91     aGroup->setObjectName(aGroupName);
  92     myLayout->addWidget(aGroup);
  93     addSeparator();
  94     myLayout->addStretch();
  95     myGroups.append(aGroup);
  96     return aGroup;
  97 }
  98
  99 /*
 100  * Searches for already created group with given name.
 101  */
 102 XGUI_MenuGroupPanel* XGUI_Workbench::findGroup(const QString& theName)
 103 {
 104   QString aGroupName = theName;
 105   XGUI_MenuGroupPanel* aPanel;
 106   foreach(aPanel, myGroups) {
 107     if(aPanel->objectName() == theName) {
 108       return aPanel;
 109     }
 110   }
 111   return NULL;
 112 }
 113
 114
 115 void XGUI_Workbench::addSeparator()
 116 {
 117     QFrame* aLine = new QFrame(myChildWidget);
 118     aLine->setFrameShape(QFrame::VLine);
 119     aLine->setFrameShadow(QFrame::Sunken);
 120     myLayout->addWidget(aLine);
 121 }
 122
 123
 124 void XGUI_Workbench::resizeEvent(QResizeEvent* theEvent)
 125 {
 126     QWidget::resizeEvent(theEvent);
 127     QSize aSize = theEvent->size();
 128     myLeftButton->setMinimumHeight(aSize.height() - 2);
 129     myRightButton->setMinimumHeight(aSize.height() - 2);
 130
 131     QSize aS = myChildWidget->sizeHint();
 132         int aW = myChildWidget->width();
 133         if (aW < aS.width())
 134                 myChildWidget->resize(aS.width(), myChildWidget->height());
 135
 136     myLeftButton->setVisible(isExceedsLeft());
 137     myRightButton->setVisible(isExceedsRight());
 138 }
 139
 140
 141 void XGUI_Workbench::onLeftScroll()
 142 {
 143     if (!isExceedsLeft())
 144                 return;
 145     myChildWidget->move( myChildWidget->pos().x() + SCROLL_STEP, 0 );
 146     myLeftButton->setVisible(isExceedsLeft());
 147     myRightButton->setVisible(isExceedsRight());
 148 }
 149
 150
 151 void XGUI_Workbench::onRightScroll()
 152 {
 153     if (!isExceedsRight())
 154                 return;
 155     myChildWidget->move( myChildWidget->pos().x() - SCROLL_STEP, 0 );
 156     myLeftButton->setVisible(isExceedsLeft());
 157     myRightButton->setVisible(isExceedsRight());
 158 }
 159
 160
 161 bool XGUI_Workbench::isExceedsLeft()
 162 {
 163     QPoint aPos = myChildWidget->pos();
 164     return (aPos.x() < 0);
 165 }
 166
 167 bool XGUI_Workbench::isExceedsRight()
 168 {
 169     QPoint aPos = myChildWidget->pos();
 170     int aVPWidth = myCommandsArea->viewport()->rect().width();
 171     int aWgtWidth = myChildWidget->childrenRect().width();
 172     return ((aVPWidth - aPos.x()) < aWgtWidth);
 173 }