samples/widgets/gauge.cpp

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