samples/shaped/shaped.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        shaped.cpp
   3 // Purpose:     Shaped Window sample
   4 // Author:      Robin Dunn
   5 // Modified by:
   6 // Created:     28-Mar-2003
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robin Dunn
   9 // Licence:     wxWindows licence
  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/app.h"
  30     #include "wx/log.h"
  31     #include "wx/frame.h"
  32     #include "wx/panel.h"
  33     #include "wx/stattext.h"
  34     #include "wx/menu.h"
  35     #include "wx/layout.h"
  36     #include "wx/msgdlg.h"
  37     #include "wx/image.h"
  38 #endif
  39
  40 #include "wx/dcclient.h"
  41 #include "wx/graphics.h"
  42 #include "wx/image.h"
  43
  44 #ifndef wxHAS_IMAGES_IN_RESOURCES
  45     #include "../sample.xpm"
  46 #endif
  47
  48 // ----------------------------------------------------------------------------
  49 // constants
  50 // ----------------------------------------------------------------------------
  51
  52 // menu ids
  53 enum
  54 {
  55     Show_Shaped = 100,
  56     Show_Transparent,
  57
  58     // must be consecutive and in the same order as wxShowEffect enum elements
  59     Show_Effect_First,
  60     Show_Effect_Roll = Show_Effect_First,
  61     Show_Effect_Slide,
  62     Show_Effect_Blend,
  63     Show_Effect_Expand,
  64     Show_Effect_Last = Show_Effect_Expand
  65 };
  66
  67 // ----------------------------------------------------------------------------
  68 // private classes
  69 // ----------------------------------------------------------------------------
  70
  71 // Define a new application type, each program should derive a class from wxApp
  72 class MyApp : public wxApp
  73 {
  74 public:
  75     // override base class virtuals
  76     // ----------------------------
  77
  78     // this one is called on application startup and is a good place for the app
  79     // initialization (doing it here and not in the ctor allows to have an error
  80     // return: if OnInit() returns false, the application terminates)
  81     virtual bool OnInit();
  82 };
  83
  84
  85 // Main frame just contains the menu items invoking the other tests
  86 class MainFrame : public wxFrame
  87 {
  88 public:
  89     MainFrame();
  90
  91 private:
  92     void OnShowShaped(wxCommandEvent& event);
  93     void OnShowTransparent(wxCommandEvent& event);
  94     void OnShowEffect(wxCommandEvent& event);
  95     void OnExit(wxCommandEvent& event);
  96
  97     DECLARE_EVENT_TABLE()
  98 };
  99
 100 // Define a new frame type: this is going to the frame showing the
 101 // effect of wxFRAME_SHAPED
 102 class ShapedFrame : public wxFrame
 103 {
 104 public:
 105     // ctor(s)
 106     ShapedFrame(wxFrame *parent);
 107     void SetWindowShape();
 108
 109     // event handlers (these functions should _not_ be virtual)
 110     void OnDoubleClick(wxMouseEvent& evt);
 111     void OnLeftDown(wxMouseEvent& evt);
 112     void OnLeftUp(wxMouseEvent& evt);
 113     void OnMouseMove(wxMouseEvent& evt);
 114     void OnExit(wxMouseEvent& evt);
 115     void OnPaint(wxPaintEvent& evt);
 116
 117 private:
 118     enum ShapeKind
 119     {
 120         Shape_None,
 121         Shape_Star,
 122 #if wxUSE_GRAPHICS_CONTEXT
 123         Shape_Circle,
 124 #endif // wxUSE_GRAPHICS_CONTEXT
 125         Shape_Max
 126     } m_shapeKind;
 127
 128     wxBitmap m_bmp;
 129     wxPoint  m_delta;
 130
 131     // any class wishing to process wxWidgets events must use this macro
 132     DECLARE_EVENT_TABLE()
 133 };
 134
 135 // Define a new frame type: this is going to the frame showing the
 136 // effect of wxWindow::SetTransparent and of
 137 // wxWindow::SetBackgroundStyle(wxBG_STYLE_TRANSPARENT)
 138 class SeeThroughFrame : public wxFrame
 139 {
 140 public:
 141     // ctor(s)
 142     SeeThroughFrame();
 143
 144     // event handlers (these functions should _not_ be virtual)
 145     void OnDoubleClick(wxMouseEvent& evt);
 146     void OnPaint(wxPaintEvent& evt);
 147
 148 private:
 149     enum State
 150     {
 151         STATE_SEETHROUGH,
 152         STATE_TRANSPARENT,
 153         STATE_OPAQUE,
 154         STATE_MAX
 155     };
 156
 157     State m_currentState;
 158
 159     // any class wishing to process wxWidgets events must use this macro
 160     DECLARE_EVENT_TABLE()
 161 };
 162
 163 class EffectFrame : public wxFrame
 164 {
 165 public:
 166     EffectFrame(wxWindow *parent,
 167                 wxShowEffect effect,
 168                 // TODO: add menu command to the main frame to allow changing
 169                 //       these parameters
 170                 unsigned timeout = 1000)
 171         : wxFrame(parent, wxID_ANY,
 172                   wxString::Format("Frame shown with %s effect",
 173                                    GetEffectName(effect)),
 174                   wxDefaultPosition, wxSize(450, 300)),
 175           m_effect(effect),
 176           m_timeout(timeout)
 177     {
 178         new wxStaticText(this, wxID_ANY,
 179                          wxString::Format("Effect: %s", GetEffectName(effect)),
 180                          wxPoint(20, 20));
 181         new wxStaticText(this, wxID_ANY,
 182                          wxString::Format("Timeout: %ums", m_timeout),
 183                          wxPoint(20, 60));
 184
 185         ShowWithEffect(m_effect, m_timeout);
 186
 187         Connect(wxEVT_CLOSE_WINDOW, wxCloseEventHandler(EffectFrame::OnClose));
 188     }
 189
 190 private:
 191     static const char *GetEffectName(wxShowEffect effect)
 192     {
 193         static const char *names[] =
 194         {
 195             "none",
 196             "roll to left",
 197             "roll to right",
 198             "roll to top",
 199             "roll to bottom",
 200             "slide to left",
 201             "slide to right",
 202             "slide to top",
 203             "slide to bottom",
 204             "fade",
 205             "expand",
 206         };
 207         wxCOMPILE_TIME_ASSERT( WXSIZEOF(names) == wxSHOW_EFFECT_MAX,
 208                                 EffectNamesMismatch );
 209
 210         return names[effect];
 211     }
 212
 213     void OnClose(wxCloseEvent& event)
 214     {
 215         HideWithEffect(m_effect, m_timeout);
 216
 217         event.Skip();
 218     }
 219
 220     wxShowEffect m_effect;
 221     unsigned m_timeout;
 222 };
 223
 224 // ============================================================================
 225 // implementation
 226 // ============================================================================
 227
 228 // ----------------------------------------------------------------------------
 229 // the application class
 230 // ----------------------------------------------------------------------------
 231
 232 IMPLEMENT_APP(MyApp)
 233
 234 // `Main program' equivalent: the program execution "starts" here
 235 bool MyApp::OnInit()
 236 {
 237     if ( !wxApp::OnInit() )
 238         return false;
 239
 240     wxInitAllImageHandlers();
 241
 242     new MainFrame;
 243
 244     // success: wxApp::OnRun() will be called which will enter the main message
 245     // loop and the application will run. If we returned false here, the
 246     // application would exit immediately.
 247     return true;
 248 }
 249
 250 // ----------------------------------------------------------------------------
 251 // main frame
 252 // ----------------------------------------------------------------------------
 253
 254 BEGIN_EVENT_TABLE(MainFrame, wxFrame)
 255     EVT_MENU(Show_Shaped, MainFrame::OnShowShaped)
 256     EVT_MENU(Show_Transparent, MainFrame::OnShowTransparent)
 257     EVT_MENU_RANGE(Show_Effect_First, Show_Effect_Last, MainFrame::OnShowEffect)
 258     EVT_MENU(wxID_EXIT, MainFrame::OnExit)
 259 END_EVENT_TABLE()
 260
 261 MainFrame::MainFrame()
 262          : wxFrame(NULL, wxID_ANY, "wxWidgets Shaped Sample",
 263                    wxDefaultPosition, wxSize(200, 100))
 264 {
 265     SetIcon(wxICON(sample));
 266
 267     wxMenuBar * const mbar = new wxMenuBar;
 268     wxMenu * const menuFrames = new wxMenu;
 269     menuFrames->Append(Show_Shaped, "Show &shaped window\tCtrl-S");
 270     menuFrames->Append(Show_Transparent, "Show &transparent window\tCtrl-T");
 271     menuFrames->AppendSeparator();
 272     menuFrames->Append(Show_Effect_Roll, "Show &rolled effect\tCtrl-R");
 273     menuFrames->Append(Show_Effect_Slide, "Show s&lide effect\tCtrl-L");
 274     menuFrames->Append(Show_Effect_Blend, "Show &fade effect\tCtrl-F");
 275     menuFrames->Append(Show_Effect_Expand, "Show &expand effect\tCtrl-E");
 276     menuFrames->AppendSeparator();
 277     menuFrames->Append(wxID_EXIT, "E&xit");
 278
 279     mbar->Append(menuFrames, "&Show");
 280     SetMenuBar(mbar);
 281
 282     Show();
 283 }
 284
 285 void MainFrame::OnShowShaped(wxCommandEvent& WXUNUSED(event))
 286 {
 287     ShapedFrame *shapedFrame = new ShapedFrame(this);
 288     shapedFrame->Show(true);
 289 }
 290
 291 void MainFrame::OnShowTransparent(wxCommandEvent& WXUNUSED(event))
 292 {
 293     SeeThroughFrame *seeThroughFrame = new SeeThroughFrame();
 294     seeThroughFrame->Show(true);
 295 }
 296
 297 void MainFrame::OnShowEffect(wxCommandEvent& event)
 298 {
 299     int effect = event.GetId();
 300     static wxDirection direction = wxLEFT;
 301     direction = (wxDirection)(((int)direction)<< 1);
 302     if ( direction > wxDOWN )
 303         direction = wxLEFT ;
 304
 305     wxShowEffect eff;
 306     switch ( effect )
 307     {
 308         case Show_Effect_Roll:
 309             switch ( direction )
 310             {
 311                 case wxLEFT:
 312                     eff = wxSHOW_EFFECT_ROLL_TO_LEFT;
 313                     break;
 314                 case wxRIGHT:
 315                     eff = wxSHOW_EFFECT_ROLL_TO_RIGHT;
 316                     break;
 317                 case wxTOP:
 318                     eff = wxSHOW_EFFECT_ROLL_TO_TOP;
 319                     break;
 320                 case wxBOTTOM:
 321                     eff = wxSHOW_EFFECT_ROLL_TO_BOTTOM;
 322                     break;
 323                 default:
 324                     wxFAIL_MSG( "invalid direction" );
 325                     return;
 326             }
 327             break;
 328         case Show_Effect_Slide:
 329             switch ( direction )
 330             {
 331                 case wxLEFT:
 332                     eff = wxSHOW_EFFECT_SLIDE_TO_LEFT;
 333                     break;
 334                 case wxRIGHT:
 335                     eff = wxSHOW_EFFECT_SLIDE_TO_RIGHT;
 336                     break;
 337                 case wxTOP:
 338                     eff = wxSHOW_EFFECT_SLIDE_TO_TOP;
 339                     break;
 340                 case wxBOTTOM:
 341                     eff = wxSHOW_EFFECT_SLIDE_TO_BOTTOM;
 342                     break;
 343                 default:
 344                     wxFAIL_MSG( "invalid direction" );
 345                     return;
 346             }
 347             break;
 348
 349         case Show_Effect_Blend:
 350             eff = wxSHOW_EFFECT_BLEND;
 351             break;
 352
 353         case Show_Effect_Expand:
 354             eff = wxSHOW_EFFECT_EXPAND;
 355             break;
 356
 357         default:
 358             wxFAIL_MSG( "invalid effect" );
 359             return;
 360     }
 361
 362     new EffectFrame(this,  eff, 1000);
 363 }
 364
 365 void MainFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 366 {
 367     Close();
 368 }
 369
 370 // ----------------------------------------------------------------------------
 371 // shaped frame
 372 // ----------------------------------------------------------------------------
 373
 374 BEGIN_EVENT_TABLE(ShapedFrame, wxFrame)
 375     EVT_LEFT_DCLICK(ShapedFrame::OnDoubleClick)
 376     EVT_LEFT_DOWN(ShapedFrame::OnLeftDown)
 377     EVT_LEFT_UP(ShapedFrame::OnLeftUp)
 378     EVT_MOTION(ShapedFrame::OnMouseMove)
 379     EVT_RIGHT_UP(ShapedFrame::OnExit)
 380     EVT_PAINT(ShapedFrame::OnPaint)
 381 END_EVENT_TABLE()
 382
 383
 384 // frame constructor
 385 ShapedFrame::ShapedFrame(wxFrame *parent)
 386        : wxFrame(parent, wxID_ANY, wxEmptyString,
 387                   wxDefaultPosition, wxSize(100, 100),
 388                   0
 389                   | wxFRAME_SHAPED
 390                   | wxSIMPLE_BORDER
 391                   | wxFRAME_NO_TASKBAR
 392                   | wxSTAY_ON_TOP
 393             )
 394 {
 395     m_shapeKind = Shape_None;
 396     m_bmp = wxBitmap(wxT("star.png"), wxBITMAP_TYPE_PNG);
 397     SetSize(wxSize(m_bmp.GetWidth(), m_bmp.GetHeight()));
 398     SetToolTip(wxT("Right-click to close, double click to cycle shape"));
 399     SetWindowShape();
 400 }
 401
 402 void ShapedFrame::SetWindowShape()
 403 {
 404     switch ( m_shapeKind )
 405     {
 406         case Shape_None:
 407             SetShape(wxRegion());
 408             break;
 409
 410         case Shape_Star:
 411             SetShape(wxRegion(m_bmp, *wxWHITE));
 412             break;
 413
 414 #if wxUSE_GRAPHICS_CONTEXT
 415         case Shape_Circle:
 416             {
 417                 wxGraphicsPath
 418                     path = wxGraphicsRenderer::GetDefaultRenderer()->CreatePath();
 419                 path.AddCircle(m_bmp.GetWidth()/2, m_bmp.GetHeight()/2, 30);
 420                 SetShape(path);
 421             }
 422             break;
 423 #endif // wxUSE_GRAPHICS_CONTEXT
 424
 425         case Shape_Max:
 426             wxFAIL_MSG( "invalid shape kind" );
 427             break;
 428     }
 429 }
 430
 431 void ShapedFrame::OnDoubleClick(wxMouseEvent& WXUNUSED(evt))
 432 {
 433     m_shapeKind = static_cast<ShapeKind>((m_shapeKind + 1) % Shape_Max);
 434     SetWindowShape();
 435 }
 436
 437 void ShapedFrame::OnLeftDown(wxMouseEvent& evt)
 438 {
 439     CaptureMouse();
 440     wxPoint pos = ClientToScreen(evt.GetPosition());
 441     wxPoint origin = GetPosition();
 442     int dx =  pos.x - origin.x;
 443     int dy = pos.y - origin.y;
 444     m_delta = wxPoint(dx, dy);
 445 }
 446
 447 void ShapedFrame::OnLeftUp(wxMouseEvent& WXUNUSED(evt))
 448 {
 449     if (HasCapture())
 450     {
 451         ReleaseMouse();
 452     }
 453 }
 454
 455 void ShapedFrame::OnMouseMove(wxMouseEvent& evt)
 456 {
 457     wxPoint pt = evt.GetPosition();
 458     if (evt.Dragging() && evt.LeftIsDown())
 459     {
 460         wxPoint pos = ClientToScreen(pt);
 461         Move(wxPoint(pos.x - m_delta.x, pos.y - m_delta.y));
 462     }
 463 }
 464
 465 void ShapedFrame::OnExit(wxMouseEvent& WXUNUSED(evt))
 466 {
 467     Close();
 468 }
 469
 470 void ShapedFrame::OnPaint(wxPaintEvent& WXUNUSED(evt))
 471 {
 472     wxPaintDC dc(this);
 473     dc.DrawBitmap(m_bmp, 0, 0, true);
 474 }
 475
 476 // ----------------------------------------------------------------------------
 477 // see-through frame
 478 // ----------------------------------------------------------------------------
 479
 480 BEGIN_EVENT_TABLE(SeeThroughFrame, wxFrame)
 481     EVT_LEFT_DCLICK(SeeThroughFrame::OnDoubleClick)
 482     EVT_PAINT(SeeThroughFrame::OnPaint)
 483 END_EVENT_TABLE()
 484
 485 SeeThroughFrame::SeeThroughFrame()
 486        : wxFrame(NULL, wxID_ANY, "Transparency test: double click here",
 487                   wxPoint(100, 30), wxSize(300, 300),
 488                   wxDEFAULT_FRAME_STYLE |
 489                   wxFULL_REPAINT_ON_RESIZE |
 490                   wxSTAY_ON_TOP),
 491          m_currentState(STATE_SEETHROUGH)
 492 {
 493     SetBackgroundColour(wxColour(255, 255, 255, 255));
 494     SetBackgroundStyle(wxBG_STYLE_TRANSPARENT);
 495 }
 496
 497 // Paints a grid of varying hue and alpha
 498 void SeeThroughFrame::OnPaint(wxPaintEvent& WXUNUSED(evt))
 499 {
 500     wxPaintDC dc(this);
 501     dc.SetPen(wxNullPen);
 502
 503     int xcount = 8;
 504     int ycount = 8;
 505
 506     float xstep = 1. / xcount;
 507     float ystep = 1. / ycount;
 508
 509     int width = GetClientSize().GetWidth();
 510     int height = GetClientSize().GetHeight();
 511
 512     for ( float x = 0.; x < 1.; x += xstep )
 513     {
 514         for ( float y = 0.; y < 1.; y += ystep )
 515         {
 516             wxImage::RGBValue v = wxImage::HSVtoRGB(wxImage::HSVValue(x, 1., 1.));
 517             dc.SetBrush(wxBrush(wxColour(v.red, v.green, v.blue,
 518                                 (int)(255*(1. - y)))));
 519             int x1 = (int)(x * width);
 520             int y1 = (int)(y * height);
 521             int x2 = (int)((x + xstep) * width);
 522             int y2 = (int)((y + ystep) * height);
 523             dc.DrawRectangle(x1, y1, x2 - x1, y2 - y1);
 524         }
 525     }
 526 }
 527
 528 // Switches between colour and transparent background on doubleclick
 529 void SeeThroughFrame::OnDoubleClick(wxMouseEvent& WXUNUSED(evt))
 530 {
 531     m_currentState = (State)((m_currentState + 1) % STATE_MAX);
 532
 533     switch ( m_currentState )
 534     {
 535         case STATE_OPAQUE:
 536             SetBackgroundStyle(wxBG_STYLE_COLOUR);
 537             SetTransparent(255);
 538             SetTitle("Opaque");
 539             break;
 540
 541         case STATE_SEETHROUGH:
 542             SetBackgroundStyle(wxBG_STYLE_TRANSPARENT);
 543             SetTransparent(255);
 544             SetTitle("See through");
 545             break;
 546
 547         case STATE_TRANSPARENT:
 548             SetBackgroundStyle(wxBG_STYLE_COLOUR);
 549             SetTransparent(128);
 550             SetTitle("Semi-transparent");
 551             break;
 552
 553         case STATE_MAX:
 554             wxFAIL_MSG( "unreachable" );
 555     }
 556
 557     Refresh();
 558 }
 559