partition_widget.h

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#ifndef SWRI_PROFILER_TOOLS_PARTITION_WIDGET_H_
#define SWRI_PROFILER_TOOLS_PARTITION_WIDGET_H_
 
#include <QWidget>
#include <QColor>
#include <QRectF>
#include <swri_profiler_tools/database_key.h>
 
QT_BEGIN_NAMESPACE
class QHelpEvent;
QT_END_NAMESPACE
 
namespace swri_profiler_tools
{
class Profile;
class ProfileDatabase;
class VariantAnimation;
class PartitionWidget : public QWidget
{
  Q_OBJECT;
 
 public:
  PartitionWidget(QWidget *parent=0);
  ~PartitionWidget();
  void setDatabase(ProfileDatabase *db);
 
 public Q_SLOTS:
  void setActiveNode(int profile_key, int node_key);
 
 Q_SIGNALS:
  void activeNodeChanged(int profile_key, int node_key);
 
  
 private:
  // This structure stores information about how profile nodes are
  // laid out.
  struct LayoutItem
  {
    int node_key;
    bool exclusive;
    QRectF rect;
  };
  typedef std::vector<LayoutItem> Layout;
  
  ProfileDatabase *db_;
  DatabaseKey active_key_;
 
  // Controls animation of the rect that defines the view area in the
  // data space.
  VariantAnimation *view_animator_;
  QTransform win_from_data_;
  
  Layout current_layout_;
  Layout layoutProfile(const Profile &profile);
 
  void renderLayout(QPainter &painter,
                    const QTransform &win_from_rect,
                    const Layout &layout,
                    const Profile &profile);
 
  QTransform getTransform(const QRectF &win_rect,
                          const QRectF &data_rect);
 
  QRectF dataRect(const Layout &layout) const;
                                             
  int itemAtPoint(const QPointF &point) const;                                             
                                             
 private Q_SLOTS:
  void updateData();
  
 protected:
  bool event(QEvent *event);
  void toolTipEvent(QHelpEvent *event);
  void paintEvent(QPaintEvent *event);
  void mousePressEvent(QMouseEvent *event);
  void mouseDoubleClickEvent(QMouseEvent *event);
};  // class PartitionWidget  
}  // namespace swri_profiler_tools
#endif  // SWRI_PROFILER_TOOLS_PARTITION_WIDGET_H_