include/wx/generic/progdlgg.h

   1 ////////////////////////////////////////////////////
   2 // Name:        progdlgg.h
   3 // Purpose:     wxProgressDialog class
   4 // Author:      Karsten Ballueder
   5 // Modified by:
   6 // Created:     09.05.1999
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Karsten Ballueder
   9 // Licence:     wxWindows licence
  10 ////////////////////////////////////////////////////
  11
  12 #ifndef __PROGDLGH_G__
  13 #define __PROGDLGH_G__
  14
  15 #include "wx/defs.h"
  16 #include "wx/progdlg.h"
  17
  18 #if wxUSE_PROGRESSDLG
  19
  20 #include "wx/dialog.h"
  21
  22 class WXDLLIMPEXP_FWD_CORE wxButton;
  23 class WXDLLIMPEXP_FWD_CORE wxGauge;
  24 class WXDLLIMPEXP_FWD_CORE wxStaticText;
  25
  26 /* Progress dialog which shows a moving progress bar.
  27     Taken from the Mahogany project.*/
  28
  29 class WXDLLIMPEXP_CORE wxProgressDialog : public wxDialog
  30 {
  31 DECLARE_DYNAMIC_CLASS(wxProgressDialog)
  32 public:
  33     /* Creates and displays dialog, disables event handling for other
  34        frames or parent frame to avoid recursion problems.
  35        @param title title for window
  36        @param message message to display in window
  37        @param maximum value for status bar, if <= 0, no bar is shown
  38        @param parent window or NULL
  39        @param style is the bit mask of wxPD_XXX constants from wx/defs.h
  40     */
  41     wxProgressDialog(const wxString& title, const wxString& message,
  42                      int maximum = 100,
  43                      wxWindow *parent = NULL,
  44                      int style = wxPD_APP_MODAL | wxPD_AUTO_HIDE);
  45     /* Destructor.
  46         Re-enables event handling for other windows.
  47     */
  48     virtual ~wxProgressDialog();
  49
  50     /* Update the status bar to the new value.
  51        @param value new value
  52        @param newmsg if used, new message to display
  53        @return true if ABORT button has not been pressed
  54     */
  55     virtual bool Update(int value, const wxString& newmsg = wxEmptyString, bool *skip = NULL);
  56
  57     /* Switches the dialog to use a gauge in indeterminate mode and calls
  58        wxGauge::Pulse() to show to the user a bit of progress */
  59     virtual bool Pulse(const wxString& newmsg = wxEmptyString, bool *skip = NULL);
  60
  61     // Must provide overload to avoid hiding it (and warnings about it)
  62     virtual void Update() { wxDialog::Update(); }
  63
  64     virtual bool Show( bool show = true );
  65
  66     /* Can be called to continue after the cancel button has been pressed, but
  67        the program decided to continue the operation (e.g., user didn't
  68        confirm it)
  69     */
  70     void Resume();
  71
  72     int GetValue() const;
  73     int GetRange() const;
  74     wxString GetMessage() const;
  75
  76 protected:
  77     // callback for optional abort button
  78     void OnCancel(wxCommandEvent&);
  79
  80     // callback for optional skip button
  81     void OnSkip(wxCommandEvent&);
  82
  83     // callback to disable "hard" window closing
  84     void OnClose(wxCloseEvent&);
  85
  86     // must be called to reenable the other windows temporarily disabled while
  87     // the dialog was shown
  88     void ReenableOtherWindows();
  89
  90 private:
  91     // create the label with given text and another one to show the time nearby
  92     // as the next windows in the sizer, returns the created control
  93     wxStaticText *CreateLabel(const wxString& text, wxSizer *sizer);
  94
  95     // updates the label message
  96     void UpdateMessage(const wxString &newmsg);
  97
  98     // common part of Update() and Pulse(), returns true if not cancelled
  99     bool DoAfterUpdate(bool *skip);
 100
 101     // shortcuts for enabling buttons
 102     void EnableClose();
 103     void EnableSkip(bool enable = true);
 104     void EnableAbort(bool enable = true);
 105     void DisableSkip() { EnableSkip(false); }
 106     void DisableAbort() { EnableAbort(false); }
 107
 108     // the widget displaying current status (may be NULL)
 109     wxGauge *m_gauge;
 110     // the message displayed
 111     wxStaticText *m_msg;
 112     // displayed elapsed, estimated, remaining time
 113     wxStaticText *m_elapsed,
 114                  *m_estimated,
 115                  *m_remaining;
 116     // time when the dialog was created
 117     unsigned long m_timeStart;
 118     // time when the dialog was closed or cancelled
 119     unsigned long m_timeStop;
 120     // time between the moment the dialog was closed/cancelled and resume
 121     unsigned long m_break;
 122
 123     // parent top level window (may be NULL)
 124     wxWindow *m_parentTop;
 125
 126     // continue processing or not (return value for Update())
 127     enum
 128     {
 129         Uncancelable = -1,   // dialog can't be canceled
 130         Canceled,            // can be cancelled and, in fact, was
 131         Continue,            // can be cancelled but wasn't
 132         Finished             // finished, waiting to be removed from screen
 133     } m_state;
 134
 135     // skip some portion
 136     bool m_skip;
 137
 138 #if !defined(__SMARTPHONE__)
 139     // the abort and skip buttons (or NULL if none)
 140     wxButton *m_btnAbort;
 141     wxButton *m_btnSkip;
 142 #endif
 143
 144     // the maximum value
 145     int m_maximum;
 146
 147     // saves the time when elapsed time was updated so there is only one
 148     // update per second
 149     unsigned long m_last_timeupdate;
 150     // tells how often a change of the estimated time has to be confirmed
 151     // before it is actually displayed - this reduces the frequence of updates
 152     // of estimated and remaining time
 153     const int m_delay;
 154     // counts the confirmations
 155     int m_ctdelay;
 156     unsigned long m_display_estimated;
 157
 158     bool m_hasAbortButton,
 159          m_hasSkipButton;
 160
 161 #if defined(__WXMSW__ ) || defined(__WXPM__)
 162     // the factor we use to always keep the value in 16 bit range as the native
 163     // control only supports ranges from 0 to 65,535
 164     size_t m_factor;
 165 #endif // __WXMSW__
 166
 167     // for wxPD_APP_MODAL case
 168     class WXDLLIMPEXP_FWD_CORE wxWindowDisabler *m_winDisabler;
 169
 170     DECLARE_EVENT_TABLE()
 171     DECLARE_NO_COPY_CLASS(wxProgressDialog)
 172 };
 173
 174 #endif // wxUSE_PROGRESSDLG
 175
 176 #endif // __PROGDLGH_G__