Source: topiechart.h

# Source: topiechart.h |
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    /*****
     *
     * TOra - An Oracle Toolkit for DBA's and developers
     * Copyright (C) 2003-2005 Quest Software, Inc
     * Portions Copyright (C) 2005 Other Contributors
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License
     * as published by the Free Software Foundation;  only version 2 of
     * the License is valid for this program.
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
     *
     *      As a special exception, you have permission to link this program
     *      with the Oracle Client libraries and distribute executables, as long
     *      as you follow the requirements of the GNU GPL in regard to all of the
     *      software in the executable aside from Oracle client libraries.
     *
     *      Specifically you are not permitted to link this program with the
     *      Qt/UNIX, Qt/Windows or Qt Non Commercial products of TrollTech.
     *      And you are not permitted to distribute binaries compiled against
     *      these libraries without written consent from Quest Software, Inc.
     *      Observe that this does not disallow linking to the Qt Free Edition.
     *
     *      You may link this product with any GPL'd Qt library such as Qt/Free
     *
     * All trademarks belong to their respective owners.
     *
     *****/

    #ifndef TOPIECHART_H
    #define TOPIECHART_H

    #include
    #include

    class QPopupMenu;
    class toLineChart;
    class toPieTip;

    /** A widget that displays a piechart.
     */

    class toPieChart : public QWidget {
      Q_OBJECT

      std::list Values;
      std::list Labels;
      QString Postfix;
      bool Legend;
      bool DisplayPercent;
      QString Title;
      QPopupMenu *Menu;

      QRect ChartRect;
      std::list Angels;

      toPieTip* AllTip;

    protected:
      virtual void mouseDoubleClickEvent(QMouseEvent *e);
      virtual void mousePressEvent(QMouseEvent *e);
    public:
      /** Create a new piechart.
       * @param parent Parent widget.
       * @param name Name of widget.
       * @param f Widget flags.
       */
      toPieChart(QWidget *parent=NULL,const char *name=NULL,WFlags f=0);

      virtual ~toPieChart();

      /** Create a copy of a piechart.
       * @param pie Pie chart to copy.
       * @param parent Parent widget.
       * @param name Name of widget.
       * @param f Widget flags.
       */
      toPieChart(toPieChart *pie,QWidget *parent=NULL,const char *name=NULL,WFlags f=0);

      /** Set the postfix text to append the current values when they are displayed in the
       * pie.
       * @param post Postfix string, no space will be added after the value before the string
       *             so if you want the space you need to specify it first in this string.
       */
      void setPostfix(const QString &post)
      { Postfix=post; update(); }
      /** Get the postfix string.
       * @return Current postfix string.
       */
      const QString &postfix(void) const
      { return Postfix; }

      /** Set title of the chart. Set to empty string to not display title.
       * @param title Title of chart.
       */
      void setTitle(const QString &title=QString::null)
      { Title=title; update(); }
      /** Get title of chart.
       * @return Title of chart.
       */
      const QString &title(void)
      { return Title; }

      /** Display piecharts in percent instead of actual values
       * @param pct Wether or not to display percent only.
       */
      void setDisplayPercent(bool pct)
      { DisplayPercent=pct; update(); }
      /** Check if only percent is displayed
       * @return True if only percent is displayed.
       */
      bool displayPercent(void) const
      { return DisplayPercent; }

      /** Specify if legend should be displayed to the right of the graph, default is on.
       * @param on Whether to display graph or not.
       */
      void showLegend(bool on)
      { Legend=on; update(); }
      /** Check if legend is displayed or not.
       * @return If legend is displayed or not.
       */
      bool legend(void) const
      { return Legend; }

      /** Set value list of piechart.
       * @param values List of values to display.
       * @param labels List of labels, if label is empty it will not appear in legend.
       */
      void setValues(std::list &values,std::list &labels);
      /** Add a value to the piechart.
       * @param value New value to add.
       * @param label Label of this new value.
       */
      void addValue(double value,const QString &label)
      { Values.insert(Values.end(),value); Labels.insert(Labels.end(),label); update(); }
      /** Get list of values.
       * @return Values in piechart.
       */
      std::list &values(void)
      { return Values; }
      /** Get labels of piechart.
       * @return List of labels.
       */
      std::list &labels(void)
      { return Labels; }
      /** Find the label if any of a point in the chart.
       */
      QString findLabel(QPoint p);
      /** Get rectangle that the chart is contained in.
       */
      QRect chartRectangle()
      { return ChartRect; }
    signals:
      void newValues(std::list &values,std::list &labels);
    public slots:
      /** Print the chart
       */
      void editPrint(void);
      /** Open in new window
       */
      void openCopy(void);
    protected:
      /** Paint chart in a given rectangle.
       */
      virtual void paintChart(QPainter *p,QRect rect);
      /** Reimplemented for internal reasons.
       */
      virtual void paintEvent(QPaintEvent *e);
    };

    /** This class can be used to make a line chart (Or bar chart) follow the values in a piechart.
     * After it is constructed it will destroy itself if any of the two involved classes are deleted.
     * The only available option is wether to use flow (Differences since last time) or not when
     * updating the linechart. Requires that each valueset has a unique label to work.
     */

    class toPieConnector : public QObject {
      Q_OBJECT

      toPieChart *PieChart;
      toLineChart *LineChart;

      bool Flow;
      time_t LastStamp;
      std::list LastValues;
    public:
      toPieConnector(toPieChart *pieChart,toLineChart *lineChart);
      /** Set flow status.
       */
      void setFlow(bool flow)
      { Flow=flow; }
      /** Check flow status.
       */
      bool flow(void) const
      { return Flow; }
    private slots:
      void newValues(std::list &values,std::list &labels);
    };

    #endif

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