samples/widgets/gauge.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        gauge.cpp
   4 // Purpose:     Part of the widgets sample showing wxGauge
   5 // Author:      Vadim Zeitlin
   6 // Created:     27.03.01
   7 // Id:          $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin
   9 // License:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // for compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 // for all others, include the necessary headers
  28 #ifndef WX_PRECOMP
  29     #include "wx/log.h"
  30     #include "wx/timer.h"
  31
  32     #include "wx/bitmap.h"
  33     #include "wx/button.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/combobox.h"
  36     #include "wx/gauge.h"
  37     #include "wx/radiobox.h"
  38     #include "wx/statbox.h"
  39     #include "wx/textctrl.h"
  40 #endif
  41
  42 #include "wx/sizer.h"
  43
  44 #include "widgets.h"
  45 #if wxUSE_GAUGE
  46 #include "icons/gauge.xpm"
  47
  48 // ----------------------------------------------------------------------------
  49 // constants
  50 // ----------------------------------------------------------------------------
  51
  52 // control ids
  53 enum
  54 {
  55     GaugePage_Reset = 100,
  56     GaugePage_Progress,
  57     GaugePage_Clear,
  58     GaugePage_SetValue,
  59     GaugePage_SetRange,
  60     GaugePage_CurValueText,
  61     GaugePage_ValueText,
  62     GaugePage_RangeText,
  63     GaugePage_Timer,
  64     GaugePage_Gauge
  65 };
  66
  67 // ----------------------------------------------------------------------------
  68 // GaugeWidgetsPage
  69 // ----------------------------------------------------------------------------
  70
  71 class GaugeWidgetsPage : public WidgetsPage
  72 {
  73 public:
  74     GaugeWidgetsPage(wxBookCtrl *book, wxImageList *imaglist);
  75     virtual ~GaugeWidgetsPage();
  76
  77     virtual wxControl *GetWidget() const { return m_gauge; }
  78
  79 protected:
  80     // event handlers
  81     void OnButtonReset(wxCommandEvent& event);
  82     void OnButtonProgress(wxCommandEvent& event);
  83     void OnButtonClear(wxCommandEvent& event);
  84     void OnButtonSetValue(wxCommandEvent& event);
  85     void OnButtonSetRange(wxCommandEvent& event);
  86
  87     void OnCheckOrRadioBox(wxCommandEvent& event);
  88
  89     void OnUpdateUIValueButton(wxUpdateUIEvent& event);
  90     void OnUpdateUIRangeButton(wxUpdateUIEvent& event);
  91     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
  92
  93     void OnUpdateUICurValueText(wxUpdateUIEvent& event);
  94
  95     void OnProgressTimer(wxTimerEvent& event);
  96
  97     // reset the gauge parameters
  98     void Reset();
  99
 100     // (re)create the gauge
 101     void CreateGauge();
 102
 103     // stop the progress timer
 104     void StopTimer();
 105
 106     // the gauge range
 107     unsigned long m_range;
 108
 109     // the controls
 110     // ------------
 111
 112     // the checkboxes for styles
 113     wxCheckBox *m_chkVert,
 114                *m_chkSmooth;
 115
 116     // the gauge itself and the sizer it is in
 117     wxGauge *m_gauge;
 118     wxSizer *m_sizerGauge;
 119
 120     // the text entries for set value/range
 121     wxTextCtrl *m_textValue,
 122                *m_textRange;
 123
 124     // the timer for simulating gauge progress
 125     wxTimer *m_timer;
 126
 127 private:
 128     DECLARE_EVENT_TABLE()
 129     DECLARE_WIDGETS_PAGE(GaugeWidgetsPage)
 130 };
 131
 132 // ----------------------------------------------------------------------------
 133 // event tables
 134 // ----------------------------------------------------------------------------
 135
 136 BEGIN_EVENT_TABLE(GaugeWidgetsPage, WidgetsPage)
 137     EVT_BUTTON(GaugePage_Reset, GaugeWidgetsPage::OnButtonReset)
 138     EVT_BUTTON(GaugePage_Progress, GaugeWidgetsPage::OnButtonProgress)
 139     EVT_BUTTON(GaugePage_Clear, GaugeWidgetsPage::OnButtonClear)
 140     EVT_BUTTON(GaugePage_SetValue, GaugeWidgetsPage::OnButtonSetValue)
 141     EVT_BUTTON(GaugePage_SetRange, GaugeWidgetsPage::OnButtonSetRange)
 142
 143     EVT_UPDATE_UI(GaugePage_SetValue, GaugeWidgetsPage::OnUpdateUIValueButton)
 144     EVT_UPDATE_UI(GaugePage_SetRange, GaugeWidgetsPage::OnUpdateUIRangeButton)
 145     EVT_UPDATE_UI(GaugePage_Reset, GaugeWidgetsPage::OnUpdateUIResetButton)
 146
 147     EVT_UPDATE_UI(GaugePage_CurValueText, GaugeWidgetsPage::OnUpdateUICurValueText)
 148
 149     EVT_CHECKBOX(wxID_ANY, GaugeWidgetsPage::OnCheckOrRadioBox)
 150     EVT_RADIOBOX(wxID_ANY, GaugeWidgetsPage::OnCheckOrRadioBox)
 151
 152     EVT_TIMER(GaugePage_Timer, GaugeWidgetsPage::OnProgressTimer)
 153 END_EVENT_TABLE()
 154
 155 // ============================================================================
 156 // implementation
 157 // ============================================================================
 158
 159 IMPLEMENT_WIDGETS_PAGE(GaugeWidgetsPage, _T("Gauge"));
 160
 161 GaugeWidgetsPage::GaugeWidgetsPage(wxBookCtrl *book,
 162                                    wxImageList *imaglist)
 163                  :WidgetsPage(book)
 164 {
 165     imaglist->Add(wxBitmap(gauge_xpm));
 166
 167     // init everything
 168     m_range = 100;
 169
 170     m_timer = (wxTimer *)NULL;
 171
 172     m_chkVert =
 173     m_chkSmooth = (wxCheckBox *)NULL;
 174
 175     m_gauge = (wxGauge *)NULL;
 176     m_sizerGauge = (wxSizer *)NULL;
 177
 178     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 179
 180     // left pane
 181     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 182
 183     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 184
 185     m_chkVert = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Vertical"));
 186     m_chkSmooth = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Smooth"));
 187
 188     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 189
 190     wxButton *btn = new wxButton(this, GaugePage_Reset, _T("&Reset"));
 191     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 192
 193     // middle pane
 194     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY,
 195         _T("&Change gauge value"));
 196     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 197
 198     wxTextCtrl *text;
 199     wxSizer *sizerRow = CreateSizerWithTextAndLabel(_T("Current value"),
 200                                                     GaugePage_CurValueText,
 201                                                     &text);
 202     text->SetEditable(false);
 203
 204     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 205
 206     sizerRow = CreateSizerWithTextAndButton(GaugePage_SetValue,
 207                                             _T("Set &value"),
 208                                             GaugePage_ValueText,
 209                                             &m_textValue);
 210     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 211
 212     sizerRow = CreateSizerWithTextAndButton(GaugePage_SetRange,
 213                                             _T("Set &range"),
 214                                             GaugePage_RangeText,
 215                                             &m_textRange);
 216     m_textRange->SetValue( wxString::Format(_T("%lu"), m_range) );
 217     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 218
 219     btn = new wxButton(this, GaugePage_Progress, _T("Simulate &progress"));
 220     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 221
 222     btn = new wxButton(this, GaugePage_Clear, _T("&Clear"));
 223     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 224
 225     // right pane
 226     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 227     m_gauge = new wxGauge(this, GaugePage_Gauge, m_range);
 228     sizerRight->Add(m_gauge, 1, wxCENTRE | wxALL, 5);
 229     sizerRight->SetMinSize(150, 0);
 230     m_sizerGauge = sizerRight; // save it to modify it later
 231
 232     // the 3 panes panes compose the window
 233     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 234     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 235     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 236
 237     // final initializations
 238     Reset();
 239
 240     SetSizer(sizerTop);
 241
 242     sizerTop->Fit(this);
 243 }
 244
 245 GaugeWidgetsPage::~GaugeWidgetsPage()
 246 {
 247     delete m_timer;
 248 }
 249
 250 // ----------------------------------------------------------------------------
 251 // operations
 252 // ----------------------------------------------------------------------------
 253
 254 void GaugeWidgetsPage::Reset()
 255 {
 256     m_chkVert->SetValue(false);
 257     m_chkSmooth->SetValue(false);
 258 }
 259
 260 void GaugeWidgetsPage::CreateGauge()
 261 {
 262     int flags = 0;
 263
 264     if ( m_chkVert->GetValue() )
 265         flags |= wxGA_VERTICAL;
 266     else
 267         flags |= wxGA_HORIZONTAL;
 268
 269     if ( m_chkSmooth->GetValue() )
 270         flags |= wxGA_SMOOTH;
 271
 272     int val = 0;
 273     if ( m_gauge )
 274     {
 275         val = m_gauge->GetValue();
 276
 277         m_sizerGauge->Detach( m_gauge );
 278         delete m_gauge;
 279     }
 280
 281     m_gauge = new wxGauge(this, GaugePage_Gauge, m_range,
 282                           wxDefaultPosition, wxDefaultSize,
 283                           flags);
 284     m_gauge->SetValue(val);
 285
 286     if ( flags & wxGA_VERTICAL )
 287         m_sizerGauge->Add(m_gauge, 0, wxGROW | wxALL, 5);
 288     else
 289         m_sizerGauge->Add(m_gauge, 1, wxCENTRE | wxALL, 5);
 290
 291     m_sizerGauge->Layout();
 292 }
 293
 294 // ----------------------------------------------------------------------------
 295 // event handlers
 296 // ----------------------------------------------------------------------------
 297
 298 void GaugeWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 299 {
 300     Reset();
 301
 302     CreateGauge();
 303 }
 304
 305 void GaugeWidgetsPage::OnButtonProgress(wxCommandEvent& event)
 306 {
 307     if ( !m_timer )
 308     {
 309         static const int INTERVAL = 300;
 310
 311         wxLogMessage(_T("Launched progress timer (interval = %d ms)"), INTERVAL);
 312
 313         m_timer = new wxTimer(this, GaugePage_Timer);
 314         m_timer->Start(INTERVAL);
 315
 316         wxButton *btn = (wxButton *)event.GetEventObject();
 317         btn->SetLabel(_T("&Stop timer"));
 318     }
 319     else // stop the running timer
 320     {
 321         StopTimer();
 322
 323         wxLogMessage(_T("Stopped the timer."));
 324     }
 325 }
 326
 327 void GaugeWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 328 {
 329     m_gauge->SetValue(0);
 330 }
 331
 332 void GaugeWidgetsPage::OnButtonSetRange(wxCommandEvent& WXUNUSED(event))
 333 {
 334     unsigned long val;
 335     if ( !m_textRange->GetValue().ToULong(&val) )
 336         return;
 337
 338     m_range = val;
 339     m_gauge->SetRange(val);
 340 }
 341
 342 void GaugeWidgetsPage::OnButtonSetValue(wxCommandEvent& WXUNUSED(event))
 343 {
 344     unsigned long val;
 345     if ( !m_textValue->GetValue().ToULong(&val) )
 346         return;
 347
 348     m_gauge->SetValue(val);
 349 }
 350
 351 void GaugeWidgetsPage::OnUpdateUIValueButton(wxUpdateUIEvent& event)
 352 {
 353     unsigned long val;
 354     event.Enable( m_textValue->GetValue().ToULong(&val) && (val <= m_range) );
 355 }
 356
 357 void GaugeWidgetsPage::OnUpdateUIRangeButton(wxUpdateUIEvent& event)
 358 {
 359     unsigned long val;
 360     event.Enable( m_textRange->GetValue().ToULong(&val) );
 361 }
 362
 363 void GaugeWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 364 {
 365     event.Enable( m_chkVert->GetValue() || m_chkSmooth->GetValue() );
 366 }
 367
 368 void GaugeWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 369 {
 370     CreateGauge();
 371 }
 372
 373 void GaugeWidgetsPage::OnProgressTimer(wxTimerEvent& WXUNUSED(event))
 374 {
 375     int val = m_gauge->GetValue();
 376     if ( (unsigned)val < m_range )
 377     {
 378         m_gauge->SetValue(val + 1);
 379     }
 380     else // reached the end
 381     {
 382         StopTimer();
 383     }
 384 }
 385
 386 void GaugeWidgetsPage::OnUpdateUICurValueText(wxUpdateUIEvent& event)
 387 {
 388     event.SetText( wxString::Format(_T("%d"), m_gauge->GetValue()));
 389 }
 390
 391 void GaugeWidgetsPage::StopTimer()
 392 {
 393     wxCHECK_RET( m_timer, _T("shouldn't be called") );
 394
 395     m_timer->Stop();
 396     delete m_timer;
 397     m_timer = NULL;
 398
 399     wxButton *btn = (wxButton *)FindWindow(GaugePage_Progress);
 400     wxCHECK_RET( btn, _T("no progress button?") );
 401
 402     btn->SetLabel(_T("Simulate &progress"));
 403
 404     wxLogMessage(_T("Progress finished."));
 405 }
 406
 407 #endif
 408     // wxUSE_GAUGE