| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: drawing.cpp |
| 3 | // Purpose: shows and tests wxDC features |
| 4 | // Author: Robert Roebling |
| 5 | // Modified by: |
| 6 | // Created: 04/01/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Robert Roebling |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #ifdef __GNUG__ |
| 21 | #pragma implementation "drawing.cpp" |
| 22 | #pragma interface "drawing.cpp" |
| 23 | #endif |
| 24 | |
| 25 | // For compilers that support precompilation, includes "wx/wx.h". |
| 26 | #include "wx/wxprec.h" |
| 27 | |
| 28 | #ifdef __BORLANDC__ |
| 29 | #pragma hdrstop |
| 30 | #endif |
| 31 | |
| 32 | // for all others, include the necessary headers (this file is usually all you |
| 33 | // need because it includes almost all "standard" wxWindows headers |
| 34 | #ifndef WX_PRECOMP |
| 35 | #include "wx/wx.h" |
| 36 | #endif |
| 37 | |
| 38 | #include "wx/colordlg.h" |
| 39 | #include "wx/image.h" |
| 40 | |
| 41 | // ---------------------------------------------------------------------------- |
| 42 | // ressources |
| 43 | // ---------------------------------------------------------------------------- |
| 44 | |
| 45 | // the application icon |
| 46 | #if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) |
| 47 | #include "mondrian.xpm" |
| 48 | #endif |
| 49 | |
| 50 | // ---------------------------------------------------------------------------- |
| 51 | // constants |
| 52 | // ---------------------------------------------------------------------------- |
| 53 | |
| 54 | // what do we show on screen (there are too many shapes to put them all on |
| 55 | // screen simultaneously) |
| 56 | enum ScreenToShow |
| 57 | { |
| 58 | Show_Default, |
| 59 | Show_Text, |
| 60 | Show_Lines, |
| 61 | Show_Polygons, |
| 62 | Show_Mask, |
| 63 | Show_Ops, |
| 64 | Show_Regions, |
| 65 | Show_Circles |
| 66 | }; |
| 67 | |
| 68 | // ---------------------------------------------------------------------------- |
| 69 | // global variables |
| 70 | // ---------------------------------------------------------------------------- |
| 71 | |
| 72 | static wxBitmap *gs_bmpNoMask = NULL, |
| 73 | *gs_bmpWithColMask = NULL, |
| 74 | *gs_bmpMask = NULL, |
| 75 | *gs_bmpWithMask = NULL, |
| 76 | *gs_bmp4 = NULL, |
| 77 | *gs_bmp4_mono = NULL, |
| 78 | *gs_bmp36 = NULL; |
| 79 | |
| 80 | // ---------------------------------------------------------------------------- |
| 81 | // private classes |
| 82 | // ---------------------------------------------------------------------------- |
| 83 | |
| 84 | // Define a new application type, each program should derive a class from wxApp |
| 85 | class MyApp : public wxApp |
| 86 | { |
| 87 | public: |
| 88 | // override base class virtuals |
| 89 | // ---------------------------- |
| 90 | |
| 91 | // this one is called on application startup and is a good place for the app |
| 92 | // initialization (doing it here and not in the ctor allows to have an error |
| 93 | // return: if OnInit() returns false, the application terminates) |
| 94 | virtual bool OnInit(); |
| 95 | |
| 96 | virtual int OnExit() { DeleteBitmaps(); return 0; } |
| 97 | |
| 98 | protected: |
| 99 | void DeleteBitmaps(); |
| 100 | |
| 101 | bool LoadImages(); |
| 102 | }; |
| 103 | |
| 104 | class MyCanvas; |
| 105 | |
| 106 | // Define a new frame type: this is going to be our main frame |
| 107 | class MyFrame : public wxFrame |
| 108 | { |
| 109 | public: |
| 110 | // ctor(s) |
| 111 | MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size); |
| 112 | |
| 113 | // event handlers (these functions should _not_ be virtual) |
| 114 | void OnQuit(wxCommandEvent& event); |
| 115 | void OnAbout(wxCommandEvent& event); |
| 116 | void OnShow(wxCommandEvent &event); |
| 117 | void OnOption(wxCommandEvent &event); |
| 118 | |
| 119 | wxColour SelectColour(); |
| 120 | void PrepareDC(wxDC& dc); |
| 121 | |
| 122 | int m_backgroundMode; |
| 123 | int m_textureBackground; |
| 124 | int m_mapMode; |
| 125 | double m_xUserScale; |
| 126 | double m_yUserScale; |
| 127 | int m_xLogicalOrigin; |
| 128 | int m_yLogicalOrigin; |
| 129 | bool m_xAxisReversed, |
| 130 | m_yAxisReversed; |
| 131 | wxColour m_colourForeground, // these are _text_ colours |
| 132 | m_colourBackground; |
| 133 | wxBrush m_backgroundBrush; |
| 134 | MyCanvas *m_canvas; |
| 135 | |
| 136 | private: |
| 137 | // any class wishing to process wxWindows events must use this macro |
| 138 | DECLARE_EVENT_TABLE() |
| 139 | }; |
| 140 | |
| 141 | // define a scrollable canvas for drawing onto |
| 142 | class MyCanvas: public wxScrolledWindow |
| 143 | { |
| 144 | public: |
| 145 | MyCanvas( MyFrame *parent ); |
| 146 | |
| 147 | void OnPaint(wxPaintEvent &event); |
| 148 | void OnMouseMove(wxMouseEvent &event); |
| 149 | |
| 150 | void Show(ScreenToShow show) { m_show = show; Refresh(); } |
| 151 | |
| 152 | protected: |
| 153 | void DrawTestPoly( int x, int y, wxDC &dc ,int transparent ); |
| 154 | void DrawTestLines( int x, int y, int width, wxDC &dc ); |
| 155 | void DrawText(wxDC& dc); |
| 156 | void DrawImages(wxDC& dc); |
| 157 | void DrawWithLogicalOps(wxDC& dc); |
| 158 | void DrawRegions(wxDC& dc); |
| 159 | void DrawCircles(wxDC& dc); |
| 160 | void DrawDefault(wxDC& dc); |
| 161 | |
| 162 | void DrawRegionsHelper(wxDC& dc, wxCoord x); |
| 163 | |
| 164 | private: |
| 165 | MyFrame *m_owner; |
| 166 | |
| 167 | ScreenToShow m_show; |
| 168 | wxBitmap m_smile_bmp; |
| 169 | wxIcon m_std_icon; |
| 170 | |
| 171 | DECLARE_EVENT_TABLE() |
| 172 | }; |
| 173 | |
| 174 | // ---------------------------------------------------------------------------- |
| 175 | // constants |
| 176 | // ---------------------------------------------------------------------------- |
| 177 | |
| 178 | // IDs for the controls and the menu commands |
| 179 | enum |
| 180 | { |
| 181 | // menu items |
| 182 | File_Quit = 1, |
| 183 | File_About, |
| 184 | |
| 185 | MenuShow_First, |
| 186 | File_ShowDefault = MenuShow_First, |
| 187 | File_ShowText, |
| 188 | File_ShowLines, |
| 189 | File_ShowPolygons, |
| 190 | File_ShowMask, |
| 191 | File_ShowOps, |
| 192 | File_ShowRegions, |
| 193 | File_ShowCircles, |
| 194 | MenuShow_Last = File_ShowCircles, |
| 195 | |
| 196 | MenuOption_First, |
| 197 | |
| 198 | MapMode_Text = MenuOption_First, |
| 199 | MapMode_Lometric, |
| 200 | MapMode_Twips, |
| 201 | MapMode_Points, |
| 202 | MapMode_Metric, |
| 203 | |
| 204 | UserScale_StretchHoriz, |
| 205 | UserScale_ShrinkHoriz, |
| 206 | UserScale_StretchVertic, |
| 207 | UserScale_ShrinkVertic, |
| 208 | UserScale_Restore, |
| 209 | |
| 210 | AxisMirror_Horiz, |
| 211 | AxisMirror_Vertic, |
| 212 | |
| 213 | LogicalOrigin_MoveDown, |
| 214 | LogicalOrigin_MoveUp, |
| 215 | LogicalOrigin_MoveLeft, |
| 216 | LogicalOrigin_MoveRight, |
| 217 | |
| 218 | Colour_TextForeground, |
| 219 | Colour_TextBackground, |
| 220 | Colour_Background, |
| 221 | Colour_BackgroundMode, |
| 222 | Colour_TextureBackgound, |
| 223 | |
| 224 | MenuOption_Last = Colour_TextureBackgound |
| 225 | }; |
| 226 | |
| 227 | // ---------------------------------------------------------------------------- |
| 228 | // event tables and other macros for wxWindows |
| 229 | // ---------------------------------------------------------------------------- |
| 230 | |
| 231 | |
| 232 | // Create a new application object: this macro will allow wxWindows to create |
| 233 | // the application object during program execution (it's better than using a |
| 234 | // static object for many reasons) and also declares the accessor function |
| 235 | // wxGetApp() which will return the reference of the right type (i.e. MyApp and |
| 236 | // not wxApp) |
| 237 | IMPLEMENT_APP(MyApp) |
| 238 | |
| 239 | // ============================================================================ |
| 240 | // implementation |
| 241 | // ============================================================================ |
| 242 | |
| 243 | // ---------------------------------------------------------------------------- |
| 244 | // the application class |
| 245 | // ---------------------------------------------------------------------------- |
| 246 | |
| 247 | bool MyApp::LoadImages() |
| 248 | { |
| 249 | gs_bmpNoMask = new wxBitmap; |
| 250 | gs_bmpWithColMask = new wxBitmap; |
| 251 | gs_bmpMask = new wxBitmap; |
| 252 | gs_bmpWithMask = new wxBitmap; |
| 253 | gs_bmp4 = new wxBitmap; |
| 254 | gs_bmp4_mono = new wxBitmap; |
| 255 | gs_bmp36 = new wxBitmap; |
| 256 | |
| 257 | wxPathList pathList; |
| 258 | pathList.Add("."); |
| 259 | pathList.Add(".."); |
| 260 | |
| 261 | wxString path = pathList.FindValidPath("pat4.bmp"); |
| 262 | if ( !path ) |
| 263 | return FALSE; |
| 264 | |
| 265 | /* 4 colour bitmap */ |
| 266 | gs_bmp4->LoadFile(path, wxBITMAP_TYPE_BMP); |
| 267 | /* turn into mono-bitmap */ |
| 268 | gs_bmp4_mono->LoadFile(path, wxBITMAP_TYPE_BMP); |
| 269 | wxMask* mask4 = new wxMask(*gs_bmp4_mono, *wxBLACK); |
| 270 | gs_bmp4_mono->SetMask(mask4); |
| 271 | |
| 272 | path = pathList.FindValidPath("pat36.bmp"); |
| 273 | if ( !path ) |
| 274 | return FALSE; |
| 275 | gs_bmp36->LoadFile(path, wxBITMAP_TYPE_BMP); |
| 276 | wxMask* mask36 = new wxMask(*gs_bmp36, *wxBLACK); |
| 277 | gs_bmp36->SetMask(mask36); |
| 278 | |
| 279 | path = pathList.FindValidPath("image.bmp"); |
| 280 | if ( !path ) |
| 281 | return FALSE; |
| 282 | gs_bmpNoMask->LoadFile(path, wxBITMAP_TYPE_BMP); |
| 283 | gs_bmpWithMask->LoadFile(path, wxBITMAP_TYPE_BMP); |
| 284 | gs_bmpWithColMask->LoadFile(path, wxBITMAP_TYPE_BMP); |
| 285 | |
| 286 | path = pathList.FindValidPath("mask.bmp"); |
| 287 | if ( !path ) |
| 288 | return FALSE; |
| 289 | gs_bmpMask->LoadFile(path, wxBITMAP_TYPE_BMP); |
| 290 | |
| 291 | wxMask *mask = new wxMask(*gs_bmpMask, *wxBLACK); |
| 292 | gs_bmpWithMask->SetMask(mask); |
| 293 | |
| 294 | mask = new wxMask(*gs_bmpWithColMask, *wxWHITE); |
| 295 | gs_bmpWithColMask->SetMask(mask); |
| 296 | |
| 297 | return TRUE; |
| 298 | } |
| 299 | |
| 300 | // `Main program' equivalent: the program execution "starts" here |
| 301 | bool MyApp::OnInit() |
| 302 | { |
| 303 | // Create the main application window |
| 304 | MyFrame *frame = new MyFrame("Drawing sample", |
| 305 | wxPoint(50, 50), wxSize(550, 340)); |
| 306 | |
| 307 | // Show it and tell the application that it's our main window |
| 308 | frame->Show(TRUE); |
| 309 | SetTopWindow(frame); |
| 310 | |
| 311 | if ( !LoadImages() ) |
| 312 | { |
| 313 | wxLogError("Can't load one of the bitmap files needed for this sample " |
| 314 | "from the current or parent directory, please copy them " |
| 315 | "there."); |
| 316 | |
| 317 | // stop here |
| 318 | DeleteBitmaps(); |
| 319 | |
| 320 | return FALSE; |
| 321 | } |
| 322 | |
| 323 | // ok, continue |
| 324 | return TRUE; |
| 325 | } |
| 326 | |
| 327 | void MyApp::DeleteBitmaps() |
| 328 | { |
| 329 | delete gs_bmpNoMask; |
| 330 | delete gs_bmpWithColMask; |
| 331 | delete gs_bmpMask; |
| 332 | delete gs_bmpWithMask; |
| 333 | delete gs_bmp4; |
| 334 | delete gs_bmp4_mono; |
| 335 | delete gs_bmp36; |
| 336 | } |
| 337 | |
| 338 | // ---------------------------------------------------------------------------- |
| 339 | // MyCanvas |
| 340 | // ---------------------------------------------------------------------------- |
| 341 | |
| 342 | // the event tables connect the wxWindows events with the functions (event |
| 343 | // handlers) which process them. |
| 344 | BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) |
| 345 | EVT_PAINT (MyCanvas::OnPaint) |
| 346 | EVT_MOTION (MyCanvas::OnMouseMove) |
| 347 | END_EVENT_TABLE() |
| 348 | |
| 349 | #include "smile.xpm" |
| 350 | |
| 351 | MyCanvas::MyCanvas(MyFrame *parent) |
| 352 | : wxScrolledWindow(parent, -1, wxDefaultPosition, wxDefaultSize, |
| 353 | wxHSCROLL | wxVSCROLL | wxNO_FULL_REPAINT_ON_RESIZE) |
| 354 | { |
| 355 | m_owner = parent; |
| 356 | m_show = Show_Default; |
| 357 | m_smile_bmp = wxBitmap(smile_xpm); |
| 358 | m_std_icon = wxTheApp->GetStdIcon(wxICON_INFORMATION); |
| 359 | } |
| 360 | |
| 361 | // Draw a polygon and an overlapping rectangle |
| 362 | // If transparent is 1, the fill pattern is made transparent. |
| 363 | // If transparent is 2, the fill pattern is made transparent but inversed |
| 364 | // If is transparent is 0 the text for and background color will be used to represent/map |
| 365 | // the colors of the monochrome bitmap pixels to the fillpattern |
| 366 | // |
| 367 | // I abused the the menu items for setting so called back and fore ground color |
| 368 | // just to show how the those colors do influence the fillpatterns just play |
| 369 | // with those, and with the code variations are endless using other logical |
| 370 | // functions. |
| 371 | |
| 372 | void MyCanvas::DrawTestPoly( int x, int y,wxDC &dc,int transparent ) |
| 373 | { |
| 374 | // wxBrush* brush4 = new wxBrush(*gs_bmp4); |
| 375 | wxBrush* brush4 = new wxBrush(*wxBLACK,wxFDIAGONAL_HATCH); |
| 376 | wxBrush* brush4_mono = new wxBrush(*gs_bmp4_mono); |
| 377 | wxBrush* brush36 = new wxBrush(*gs_bmp36); |
| 378 | |
| 379 | wxPoint todraw[5]; |
| 380 | todraw[0].x=(long)x+100; |
| 381 | todraw[0].y=(long)y+100; |
| 382 | todraw[1].x=(long)x+300; |
| 383 | todraw[1].y=(long)y+100; |
| 384 | todraw[2].x=(long)x+300; |
| 385 | todraw[2].y=(long)y+300; |
| 386 | todraw[3].x=(long)x+150; |
| 387 | todraw[3].y=(long)y+350; |
| 388 | todraw[4].x=(long)x+100; |
| 389 | todraw[4].y=(long)y+300; |
| 390 | |
| 391 | wxPoint todraw2[5]; |
| 392 | todraw2[0].x=100; |
| 393 | todraw2[0].y=100; |
| 394 | todraw2[1].x=300; |
| 395 | todraw2[1].y=100; |
| 396 | todraw2[2].x=300; |
| 397 | todraw2[2].y=300; |
| 398 | todraw2[3].x=150; |
| 399 | todraw2[3].y=350; |
| 400 | todraw2[4].x=100; |
| 401 | todraw2[4].y=300; |
| 402 | |
| 403 | switch (transparent) |
| 404 | { |
| 405 | case 0: |
| 406 | { |
| 407 | dc.SetLogicalFunction(wxCOPY); |
| 408 | |
| 409 | dc.SetPen( wxPen( "black", 4, wxSOLID) ); |
| 410 | dc.SetBrush( *brush4 ); |
| 411 | dc.DrawPolygon(5,todraw,0,0,wxWINDING_RULE); |
| 412 | |
| 413 | dc.SetPen( wxPen( "red", 4, wxSOLID) ); |
| 414 | dc.SetBrush( *brush36 ); |
| 415 | dc.SetTextForeground(*wxCYAN); |
| 416 | dc.SetTextBackground(m_owner->m_colourBackground); |
| 417 | dc.DrawRectangle( x+10, y+10, 200, 200 ); |
| 418 | |
| 419 | dc.SetPen( wxPen( "green", 4, wxSOLID) ); |
| 420 | dc.SetBrush( *brush4_mono ); |
| 421 | dc.SetTextForeground(*wxCYAN); |
| 422 | dc.SetTextBackground(m_owner->m_colourBackground); |
| 423 | dc.DrawRectangle( x+50, y+50, 200, 200 ); |
| 424 | |
| 425 | dc.DrawCircle( x+400, y+50, 130 ); |
| 426 | |
| 427 | dc.SetBrush(wxNullBrush); |
| 428 | dc.SetPen(wxNullPen); |
| 429 | break; |
| 430 | } |
| 431 | case 1: //now with transparent fillpatterns |
| 432 | { |
| 433 | |
| 434 | wxBitmap* bmpBlit = new wxBitmap(600,400); |
| 435 | wxMemoryDC* memDC= new wxMemoryDC(); |
| 436 | // wxBrush _clearbrush(*wxGREEN,wxSOLID); |
| 437 | wxBrush _clearbrush(*wxBLACK,wxSOLID); |
| 438 | memDC->SelectObject(*bmpBlit); |
| 439 | memDC->BeginDrawing(); |
| 440 | memDC->SetBackground(_clearbrush); |
| 441 | memDC->Clear(); |
| 442 | memDC->SetBackground(wxNullBrush); |
| 443 | |
| 444 | memDC->SetPen( wxPen( "black", 4, wxSOLID) ); |
| 445 | memDC->SetBrush( wxNullBrush); |
| 446 | memDC->SetBrush( *brush4 ); |
| 447 | memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black) |
| 448 | memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white) |
| 449 | memDC->SetLogicalFunction(wxAND_INVERT); |
| 450 | |
| 451 | // BLACK OUT the opaque pixels and leave the rest as is |
| 452 | memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE); |
| 453 | |
| 454 | // Set background and foreground colors for fill pattern |
| 455 | //the previous blacked out pixels are now merged with the layer color |
| 456 | //while the non blacked out pixels stay as they are. |
| 457 | memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black) |
| 458 | |
| 459 | //now define what will be the color of the fillpattern parts that are not transparent |
| 460 | // memDC->SetTextBackground(*wxBLUE); |
| 461 | memDC->SetTextBackground(m_owner->m_colourForeground); |
| 462 | memDC->SetLogicalFunction(wxOR); |
| 463 | |
| 464 | |
| 465 | //don't understand how but the outline is also depending on logicalfunction |
| 466 | memDC->SetPen( wxPen( "red", 4, wxSOLID) ); |
| 467 | memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE); |
| 468 | |
| 469 | memDC->SetLogicalFunction(wxCOPY); |
| 470 | |
| 471 | memDC->SetPen( wxPen( "black", 4, wxSOLID) ); |
| 472 | memDC->SetBrush( wxNullBrush); |
| 473 | memDC->SetBrush( *brush36 ); |
| 474 | memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black) |
| 475 | memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white) |
| 476 | memDC->SetLogicalFunction(wxAND_INVERT); |
| 477 | |
| 478 | memDC->DrawRectangle( 10, 10, 200, 200 ); |
| 479 | |
| 480 | // Set background and foreground colors for fill pattern |
| 481 | //the previous blacked out pixels are now merged with the layer color |
| 482 | //while the non blacked out pixels stay as they are. |
| 483 | memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black) |
| 484 | //now define what will be the color of the fillpattern parts that are not transparent |
| 485 | // memDC->SetTextBackground(*wxRED); |
| 486 | memDC->SetTextBackground(m_owner->m_colourBackground); |
| 487 | memDC->SetLogicalFunction(wxOR); |
| 488 | |
| 489 | //don't understand how but the outline is also depending on logicalfunction |
| 490 | memDC->SetPen( wxPen( "yellow", 4, wxSOLID) ); |
| 491 | memDC->DrawRectangle( 10, 10, 200, 200 ); |
| 492 | |
| 493 | memDC->SetBrush(wxNullBrush); |
| 494 | memDC->SetPen(wxNullPen); |
| 495 | |
| 496 | memDC->EndDrawing(); |
| 497 | dc.Blit(x,y,600,400,memDC,0,0,wxCOPY); |
| 498 | delete bmpBlit; |
| 499 | delete memDC; |
| 500 | break; |
| 501 | } |
| 502 | case 2: //now with transparent inversed fillpatterns |
| 503 | { |
| 504 | wxBitmap* bmpBlit = new wxBitmap(600,400); |
| 505 | wxMemoryDC* memDC= new wxMemoryDC(); |
| 506 | wxBrush _clearbrush(*wxWHITE,wxSOLID); |
| 507 | memDC->SelectObject(*bmpBlit); |
| 508 | memDC->BeginDrawing(); |
| 509 | memDC->SetBackground(_clearbrush); |
| 510 | memDC->Clear(); |
| 511 | memDC->SetBackground(wxNullBrush); |
| 512 | |
| 513 | memDC->SetPen( wxPen( "black", 4, wxSOLID) ); |
| 514 | memDC->SetBrush( *brush4 ); |
| 515 | memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black) |
| 516 | memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white) |
| 517 | memDC->SetLogicalFunction(wxAND_INVERT); |
| 518 | |
| 519 | // BLACK OUT the opaque pixels and leave the rest as is |
| 520 | memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE); |
| 521 | |
| 522 | // Set background and foreground colors for fill pattern |
| 523 | //the previous blacked out pixels are now merged with the layer color |
| 524 | //while the non blacked out pixels stay as they are. |
| 525 | memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black) |
| 526 | |
| 527 | //now define what will be the color of the fillpattern parts that are not transparent |
| 528 | memDC->SetTextForeground(m_owner->m_colourForeground); |
| 529 | memDC->SetLogicalFunction(wxOR); |
| 530 | |
| 531 | |
| 532 | //don't understand how but the outline is also depending on logicalfunction |
| 533 | memDC->SetPen( wxPen( "red", 4, wxSOLID) ); |
| 534 | memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE); |
| 535 | |
| 536 | memDC->SetLogicalFunction(wxCOPY); |
| 537 | |
| 538 | memDC->SetPen( wxPen( "black", 4, wxSOLID) ); |
| 539 | memDC->SetBrush( *brush36 ); |
| 540 | memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black) |
| 541 | memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white) |
| 542 | memDC->SetLogicalFunction(wxAND_INVERT); |
| 543 | |
| 544 | memDC->DrawRectangle( 10,10, 200, 200 ); |
| 545 | |
| 546 | // Set background and foreground colors for fill pattern |
| 547 | //the previous blacked out pixels are now merged with the layer color |
| 548 | //while the non blacked out pixels stay as they are. |
| 549 | memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black) |
| 550 | //now define what will be the color of the fillpattern parts that are not transparent |
| 551 | memDC->SetTextForeground(m_owner->m_colourBackground); |
| 552 | memDC->SetLogicalFunction(wxOR); |
| 553 | |
| 554 | //don't understand how but the outline is also depending on logicalfunction |
| 555 | memDC->SetPen( wxPen( "yellow", 4, wxSOLID) ); |
| 556 | memDC->DrawRectangle( 10, 10, 200, 200 ); |
| 557 | |
| 558 | memDC->SetBrush(wxNullBrush); |
| 559 | memDC->SetPen(wxNullPen); |
| 560 | dc.Blit(x,y,600,400,memDC,0,0,wxCOPY); |
| 561 | delete bmpBlit; |
| 562 | delete memDC; |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | delete brush4; |
| 567 | delete brush4_mono; |
| 568 | delete brush36; |
| 569 | } |
| 570 | |
| 571 | void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc ) |
| 572 | { |
| 573 | dc.SetPen( wxPen( "black", width, wxSOLID) ); |
| 574 | dc.SetBrush( *wxRED_BRUSH ); |
| 575 | dc.DrawText(wxString::Format("Testing lines of width %d", width), x + 10, y - 10); |
| 576 | dc.DrawRectangle( x+10, y+10, 100, 190 ); |
| 577 | |
| 578 | dc.DrawText("Solid/dot/short dash/long dash/dot dash", x + 150, y + 10); |
| 579 | dc.SetPen( wxPen( "black", width, wxSOLID) ); |
| 580 | dc.DrawLine( x+20, y+20, 100, y+20 ); |
| 581 | dc.SetPen( wxPen( "black", width, wxDOT) ); |
| 582 | dc.DrawLine( x+20, y+30, 100, y+30 ); |
| 583 | dc.SetPen( wxPen( "black", width, wxSHORT_DASH) ); |
| 584 | dc.DrawLine( x+20, y+40, 100, y+40 ); |
| 585 | dc.SetPen( wxPen( "black", width, wxLONG_DASH) ); |
| 586 | dc.DrawLine( x+20, y+50, 100, y+50 ); |
| 587 | dc.SetPen( wxPen( "black", width, wxDOT_DASH) ); |
| 588 | dc.DrawLine( x+20, y+60, 100, y+60 ); |
| 589 | |
| 590 | dc.DrawText("Misc hatches", x + 150, y + 70); |
| 591 | dc.SetPen( wxPen( "black", width, wxBDIAGONAL_HATCH) ); |
| 592 | dc.DrawLine( x+20, y+70, 100, y+70 ); |
| 593 | dc.SetPen( wxPen( "black", width, wxCROSSDIAG_HATCH) ); |
| 594 | dc.DrawLine( x+20, y+80, 100, y+80 ); |
| 595 | dc.SetPen( wxPen( "black", width, wxFDIAGONAL_HATCH) ); |
| 596 | dc.DrawLine( x+20, y+90, 100, y+90 ); |
| 597 | dc.SetPen( wxPen( "black", width, wxCROSS_HATCH) ); |
| 598 | dc.DrawLine( x+20, y+100, 100, y+100 ); |
| 599 | dc.SetPen( wxPen( "black", width, wxHORIZONTAL_HATCH) ); |
| 600 | dc.DrawLine( x+20, y+110, 100, y+110 ); |
| 601 | dc.SetPen( wxPen( "black", width, wxVERTICAL_HATCH) ); |
| 602 | dc.DrawLine( x+20, y+120, 100, y+120 ); |
| 603 | |
| 604 | dc.DrawText("User dash", x + 150, y + 140); |
| 605 | wxPen ud( "black", width, wxUSER_DASH ); |
| 606 | wxDash dash1[1]; |
| 607 | dash1[0] = 0; |
| 608 | ud.SetDashes( 1, dash1 ); |
| 609 | dc.DrawLine( x+20, y+140, 100, y+140 ); |
| 610 | dash1[0] = 1; |
| 611 | ud.SetDashes( 1, dash1 ); |
| 612 | dc.DrawLine( x+20, y+150, 100, y+150 ); |
| 613 | dash1[0] = 2; |
| 614 | ud.SetDashes( 1, dash1 ); |
| 615 | dc.DrawLine( x+20, y+160, 100, y+160 ); |
| 616 | dash1[0] = 0x7F; |
| 617 | ud.SetDashes( 1, dash1 ); |
| 618 | dc.DrawLine( x+20, y+170, 100, y+170 ); |
| 619 | } |
| 620 | |
| 621 | void MyCanvas::DrawDefault(wxDC& dc) |
| 622 | { |
| 623 | // mark the origin |
| 624 | dc.DrawCircle(0, 0, 10); |
| 625 | #if !(defined __WXGTK__) && !(defined __WXMOTIF__) |
| 626 | // not implemented in wxGTK or wxMOTIF :-( |
| 627 | dc.FloodFill(0, 0, wxColour(255, 0, 0)); |
| 628 | #endif // |
| 629 | |
| 630 | dc.DrawCheckMark(5, 80, 15, 15); |
| 631 | dc.DrawCheckMark(25, 80, 30, 30); |
| 632 | dc.DrawCheckMark(60, 80, 60, 60); |
| 633 | |
| 634 | // this is the test for "blitting bitmap into DC damages selected brush" bug |
| 635 | wxCoord rectSize = m_std_icon.GetWidth() + 10; |
| 636 | wxCoord x = 100; |
| 637 | dc.SetPen(*wxTRANSPARENT_PEN); |
| 638 | dc.SetBrush( *wxGREEN_BRUSH ); |
| 639 | dc.DrawRectangle(x, 10, rectSize, rectSize); |
| 640 | dc.DrawBitmap(m_std_icon, x + 5, 15, TRUE); |
| 641 | x += rectSize + 10; |
| 642 | dc.DrawRectangle(x, 10, rectSize, rectSize); |
| 643 | dc.DrawIcon(m_std_icon, x + 5, 15); |
| 644 | x += rectSize + 10; |
| 645 | dc.DrawRectangle(x, 10, rectSize, rectSize); |
| 646 | |
| 647 | // test for "transparent" bitmap drawing (it intersects with the last |
| 648 | // rectangle above) |
| 649 | //dc.SetBrush( *wxTRANSPARENT_BRUSH ); |
| 650 | |
| 651 | if (m_smile_bmp.Ok()) |
| 652 | dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, TRUE); |
| 653 | |
| 654 | dc.SetBrush( *wxBLACK_BRUSH ); |
| 655 | dc.DrawRectangle( 0, 160, 1000, 300 ); |
| 656 | |
| 657 | // draw lines |
| 658 | wxBitmap bitmap(20,70); |
| 659 | wxMemoryDC memdc; |
| 660 | memdc.SelectObject( bitmap ); |
| 661 | memdc.SetBrush( *wxBLACK_BRUSH ); |
| 662 | memdc.SetPen( *wxWHITE_PEN ); |
| 663 | memdc.DrawRectangle(0,0,20,70); |
| 664 | memdc.DrawLine( 10,0,10,70 ); |
| 665 | |
| 666 | // to the right |
| 667 | wxPen pen = *wxRED_PEN; |
| 668 | memdc.SetPen(pen); |
| 669 | memdc.DrawLine( 10, 5,10, 5 ); |
| 670 | memdc.DrawLine( 10,10,11,10 ); |
| 671 | memdc.DrawLine( 10,15,12,15 ); |
| 672 | memdc.DrawLine( 10,20,13,20 ); |
| 673 | |
| 674 | /* |
| 675 | memdc.SetPen(*wxRED_PEN); |
| 676 | memdc.DrawLine( 12, 5,12, 5 ); |
| 677 | memdc.DrawLine( 12,10,13,10 ); |
| 678 | memdc.DrawLine( 12,15,14,15 ); |
| 679 | memdc.DrawLine( 12,20,15,20 ); |
| 680 | */ |
| 681 | |
| 682 | // same to the left |
| 683 | memdc.DrawLine( 10,25,10,25 ); |
| 684 | memdc.DrawLine( 10,30, 9,30 ); |
| 685 | memdc.DrawLine( 10,35, 8,35 ); |
| 686 | memdc.DrawLine( 10,40, 7,40 ); |
| 687 | |
| 688 | // XOR draw lines |
| 689 | dc.SetPen(*wxWHITE_PEN); |
| 690 | memdc.SetLogicalFunction( wxINVERT ); |
| 691 | memdc.SetPen( *wxWHITE_PEN ); |
| 692 | memdc.DrawLine( 10,50,10,50 ); |
| 693 | memdc.DrawLine( 10,55,11,55 ); |
| 694 | memdc.DrawLine( 10,60,12,60 ); |
| 695 | memdc.DrawLine( 10,65,13,65 ); |
| 696 | |
| 697 | memdc.DrawLine( 12,50,12,50 ); |
| 698 | memdc.DrawLine( 12,55,13,55 ); |
| 699 | memdc.DrawLine( 12,60,14,60 ); |
| 700 | memdc.DrawLine( 12,65,15,65 ); |
| 701 | |
| 702 | memdc.SelectObject( wxNullBitmap ); |
| 703 | dc.DrawBitmap( bitmap, 10, 170 ); |
| 704 | wxImage image( bitmap ); |
| 705 | image.Rescale( 60,210 ); |
| 706 | bitmap = image.ConvertToBitmap(); |
| 707 | dc.DrawBitmap( bitmap, 50, 170 ); |
| 708 | |
| 709 | // test the rectangle outline drawing - there should be one pixel between |
| 710 | // the rect and the lines |
| 711 | dc.SetPen(*wxWHITE_PEN); |
| 712 | dc.SetBrush( *wxTRANSPARENT_BRUSH ); |
| 713 | dc.DrawRectangle(150, 170, 49, 29); |
| 714 | dc.DrawRectangle(200, 170, 49, 29); |
| 715 | dc.SetPen(*wxWHITE_PEN); |
| 716 | dc.DrawLine(250, 210, 250, 170); |
| 717 | dc.DrawLine(260, 200, 150, 200); |
| 718 | |
| 719 | // test the rectangle filled drawing - there should be one pixel between |
| 720 | // the rect and the lines |
| 721 | dc.SetPen(*wxTRANSPARENT_PEN); |
| 722 | dc.SetBrush( *wxWHITE_BRUSH ); |
| 723 | dc.DrawRectangle(300, 170, 49, 29); |
| 724 | dc.DrawRectangle(350, 170, 49, 29); |
| 725 | dc.SetPen(*wxWHITE_PEN); |
| 726 | dc.DrawLine(400, 170, 400, 210); |
| 727 | dc.DrawLine(300, 200, 410, 200); |
| 728 | |
| 729 | // a few more tests of this kind |
| 730 | dc.SetPen(*wxRED_PEN); |
| 731 | dc.SetBrush( *wxWHITE_BRUSH ); |
| 732 | dc.DrawRectangle(300, 220, 1, 1); |
| 733 | dc.DrawRectangle(310, 220, 2, 2); |
| 734 | dc.DrawRectangle(320, 220, 3, 3); |
| 735 | dc.DrawRectangle(330, 220, 4, 4); |
| 736 | |
| 737 | dc.SetPen(*wxTRANSPARENT_PEN); |
| 738 | dc.SetBrush( *wxWHITE_BRUSH ); |
| 739 | dc.DrawRectangle(300, 230, 1, 1); |
| 740 | dc.DrawRectangle(310, 230, 2, 2); |
| 741 | dc.DrawRectangle(320, 230, 3, 3); |
| 742 | dc.DrawRectangle(330, 230, 4, 4); |
| 743 | |
| 744 | // and now for filled rect with outline |
| 745 | dc.SetPen(*wxRED_PEN); |
| 746 | dc.SetBrush( *wxWHITE_BRUSH ); |
| 747 | dc.DrawRectangle(500, 170, 49, 29); |
| 748 | dc.DrawRectangle(550, 170, 49, 29); |
| 749 | dc.SetPen(*wxWHITE_PEN); |
| 750 | dc.DrawLine(600, 170, 600, 210); |
| 751 | dc.DrawLine(500, 200, 610, 200); |
| 752 | |
| 753 | // test the rectangle outline drawing - there should be one pixel between |
| 754 | // the rect and the lines |
| 755 | dc.SetPen(*wxWHITE_PEN); |
| 756 | dc.SetBrush( *wxTRANSPARENT_BRUSH ); |
| 757 | dc.DrawRoundedRectangle(150, 270, 49, 29, 6); |
| 758 | dc.DrawRoundedRectangle(200, 270, 49, 29, 6); |
| 759 | dc.SetPen(*wxWHITE_PEN); |
| 760 | dc.DrawLine(250, 270, 250, 310); |
| 761 | dc.DrawLine(150, 300, 260, 300); |
| 762 | |
| 763 | // test the rectangle filled drawing - there should be one pixel between |
| 764 | // the rect and the lines |
| 765 | dc.SetPen(*wxTRANSPARENT_PEN); |
| 766 | dc.SetBrush( *wxWHITE_BRUSH ); |
| 767 | dc.DrawRoundedRectangle(300, 270, 49, 29, 6); |
| 768 | dc.DrawRoundedRectangle(350, 270, 49, 29, 6); |
| 769 | dc.SetPen(*wxWHITE_PEN); |
| 770 | dc.DrawLine(400, 270, 400, 310); |
| 771 | dc.DrawLine(300, 300, 410, 300); |
| 772 | |
| 773 | // Added by JACS to demonstrate bizarre behaviour. |
| 774 | // With a size of 70, we get a missing red RHS, |
| 775 | // and the hight is too small, so we get yellow |
| 776 | // showing. With a size of 40, it draws as expected: |
| 777 | // it just shows a white rectangle with red outline. |
| 778 | int totalWidth = 70; |
| 779 | int totalHeight = 70; |
| 780 | wxBitmap bitmap2(totalWidth, totalHeight); |
| 781 | |
| 782 | wxMemoryDC memdc2; |
| 783 | memdc2.SelectObject(bitmap2); |
| 784 | |
| 785 | wxBrush yellowBrush(wxColour(255, 255, 0), wxSOLID); |
| 786 | memdc2.SetBackground(yellowBrush); |
| 787 | memdc2.Clear(); |
| 788 | |
| 789 | wxPen yellowPen(wxColour(255, 255, 0), 1, wxSOLID); |
| 790 | |
| 791 | // Now draw a white rectangle with red outline. It should |
| 792 | // entirely eclipse the yellow background. |
| 793 | memdc2.SetPen(*wxRED_PEN); |
| 794 | memdc2.SetBrush(*wxWHITE_BRUSH); |
| 795 | |
| 796 | memdc2.DrawRectangle(0, 0, totalWidth, totalHeight); |
| 797 | |
| 798 | memdc2.SetPen(wxNullPen); |
| 799 | memdc2.SetBrush(wxNullBrush); |
| 800 | memdc2.SelectObject(wxNullBitmap); |
| 801 | |
| 802 | dc.DrawBitmap(bitmap2, 500, 270); |
| 803 | |
| 804 | // Repeat, but draw directly on dc |
| 805 | // Draw a yellow rectangle filling the bitmap |
| 806 | |
| 807 | x = 600; int y = 270; |
| 808 | dc.SetPen(yellowPen); |
| 809 | dc.SetBrush(yellowBrush); |
| 810 | dc.DrawRectangle(x, y, totalWidth, totalHeight); |
| 811 | |
| 812 | // Now draw a white rectangle with red outline. It should |
| 813 | // entirely eclipse the yellow background. |
| 814 | dc.SetPen(*wxRED_PEN); |
| 815 | dc.SetBrush(*wxWHITE_BRUSH); |
| 816 | |
| 817 | dc.DrawRectangle(x, y, totalWidth, totalHeight); |
| 818 | } |
| 819 | |
| 820 | void MyCanvas::DrawText(wxDC& dc) |
| 821 | { |
| 822 | // set underlined font for testing |
| 823 | dc.SetFont( wxFont(12, wxMODERN, wxNORMAL, wxNORMAL, TRUE) ); |
| 824 | dc.DrawText( "This is text", 110, 10 ); |
| 825 | dc.DrawRotatedText( "That is text", 20, 10, -45 ); |
| 826 | |
| 827 | dc.SetFont( *wxNORMAL_FONT ); |
| 828 | |
| 829 | wxString text; |
| 830 | dc.SetBackgroundMode(wxTRANSPARENT); |
| 831 | |
| 832 | for ( int n = -180; n < 180; n += 30 ) |
| 833 | { |
| 834 | text.Printf(" %d rotated text", n); |
| 835 | dc.DrawRotatedText(text , 400, 400, n); |
| 836 | } |
| 837 | |
| 838 | dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) ); |
| 839 | |
| 840 | dc.DrawText( "This is Swiss 18pt text.", 110, 40 ); |
| 841 | |
| 842 | long length; |
| 843 | long height; |
| 844 | long descent; |
| 845 | dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent ); |
| 846 | text.Printf( "Dimensions are length %ld, height %ld, descent %ld", length, height, descent ); |
| 847 | dc.DrawText( text, 110, 80 ); |
| 848 | |
| 849 | text.Printf( "CharHeight() returns: %d", dc.GetCharHeight() ); |
| 850 | dc.DrawText( text, 110, 120 ); |
| 851 | |
| 852 | dc.DrawRectangle( 100, 40, 4, height ); |
| 853 | |
| 854 | // test the logical function effect |
| 855 | wxCoord y = 150; |
| 856 | dc.SetLogicalFunction(wxINVERT); |
| 857 | dc.DrawText( "There should be no text below", 110, 150 ); |
| 858 | dc.DrawRectangle( 110, y, 100, height ); |
| 859 | |
| 860 | // twice drawn inverted should result in invisible |
| 861 | y += height; |
| 862 | dc.DrawText( "Invisible text", 110, y ); |
| 863 | dc.DrawRectangle( 110, y, 100, height ); |
| 864 | dc.DrawText( "Invisible text", 110, y ); |
| 865 | dc.DrawRectangle( 110, y, 100, height ); |
| 866 | dc.SetLogicalFunction(wxCOPY); |
| 867 | |
| 868 | y += height; |
| 869 | dc.DrawRectangle( 110, y, 100, height ); |
| 870 | dc.DrawText( "Visible text", 110, y ); |
| 871 | } |
| 872 | |
| 873 | static const struct |
| 874 | { |
| 875 | const wxChar *name; |
| 876 | int rop; |
| 877 | } rasterOperations[] = |
| 878 | { |
| 879 | { "wxAND", wxAND }, |
| 880 | { "wxAND_INVERT", wxAND_INVERT }, |
| 881 | { "wxAND_REVERSE", wxAND_REVERSE }, |
| 882 | { "wxCLEAR", wxCLEAR }, |
| 883 | { "wxCOPY", wxCOPY }, |
| 884 | { "wxEQUIV", wxEQUIV }, |
| 885 | { "wxINVERT", wxINVERT }, |
| 886 | { "wxNAND", wxNAND }, |
| 887 | { "wxNO_OP", wxNO_OP }, |
| 888 | { "wxOR", wxOR }, |
| 889 | { "wxOR_INVERT", wxOR_INVERT }, |
| 890 | { "wxOR_REVERSE", wxOR_REVERSE }, |
| 891 | { "wxSET", wxSET }, |
| 892 | { "wxSRC_INVERT", wxSRC_INVERT }, |
| 893 | { "wxXOR", wxXOR }, |
| 894 | }; |
| 895 | |
| 896 | void MyCanvas::DrawImages(wxDC& dc) |
| 897 | { |
| 898 | dc.DrawText("original image", 0, 0); |
| 899 | dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0); |
| 900 | dc.DrawText("with colour mask", 0, 100); |
| 901 | dc.DrawBitmap(*gs_bmpWithColMask, 0, 120, TRUE); |
| 902 | dc.DrawText("the mask image", 0, 200); |
| 903 | dc.DrawBitmap(*gs_bmpMask, 0, 220, 0); |
| 904 | dc.DrawText("masked image", 0, 300); |
| 905 | dc.DrawBitmap(*gs_bmpWithMask, 0, 320, TRUE); |
| 906 | |
| 907 | int cx = gs_bmpWithColMask->GetWidth(), |
| 908 | cy = gs_bmpWithColMask->GetHeight(); |
| 909 | |
| 910 | wxMemoryDC memDC; |
| 911 | for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ ) |
| 912 | { |
| 913 | wxCoord x = 120 + 150*(n%4), |
| 914 | y = 20 + 100*(n/4); |
| 915 | |
| 916 | dc.DrawText(rasterOperations[n].name, x, y - 20); |
| 917 | memDC.SelectObject(*gs_bmpWithColMask); |
| 918 | dc.Blit(x, y, cx, cy, &memDC, 0, 0, rasterOperations[n].rop, TRUE); |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | void MyCanvas::DrawWithLogicalOps(wxDC& dc) |
| 923 | { |
| 924 | static const wxCoord w = 60; |
| 925 | static const wxCoord h = 60; |
| 926 | |
| 927 | // reuse the text colour here |
| 928 | dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID)); |
| 929 | dc.SetBrush(*wxTRANSPARENT_BRUSH); |
| 930 | |
| 931 | size_t n; |
| 932 | for ( n = 0; n < WXSIZEOF(rasterOperations); n++ ) |
| 933 | { |
| 934 | wxCoord x = 20 + 150*(n%4), |
| 935 | y = 20 + 100*(n/4); |
| 936 | |
| 937 | dc.DrawText(rasterOperations[n].name, x, y - 20); |
| 938 | dc.SetLogicalFunction(rasterOperations[n].rop); |
| 939 | dc.DrawRectangle(x, y, w, h); |
| 940 | dc.DrawLine(x, y, x + w, y + h); |
| 941 | dc.DrawLine(x + w, y, x, y + h); |
| 942 | } |
| 943 | |
| 944 | // now some filled rectangles |
| 945 | dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID)); |
| 946 | |
| 947 | for ( n = 0; n < WXSIZEOF(rasterOperations); n++ ) |
| 948 | { |
| 949 | wxCoord x = 20 + 150*(n%4), |
| 950 | y = 500 + 100*(n/4); |
| 951 | |
| 952 | dc.DrawText(rasterOperations[n].name, x, y - 20); |
| 953 | dc.SetLogicalFunction(rasterOperations[n].rop); |
| 954 | dc.DrawRectangle(x, y, w, h); |
| 955 | } |
| 956 | } |
| 957 | |
| 958 | void MyCanvas::DrawCircles(wxDC& dc) |
| 959 | { |
| 960 | int x = 100, |
| 961 | y = 100, |
| 962 | r = 20; |
| 963 | |
| 964 | dc.DrawText("Some circles", 0, y); |
| 965 | dc.DrawCircle(x, y, r); |
| 966 | dc.DrawCircle(x + 2*r, y, r); |
| 967 | dc.DrawCircle(x + 4*r, y, r); |
| 968 | |
| 969 | y += 2*r; |
| 970 | dc.DrawText("And ellipses", 0, y); |
| 971 | dc.DrawEllipse(x - r, y, 2*r, r); |
| 972 | dc.DrawEllipse(x + r, y, 2*r, r); |
| 973 | dc.DrawEllipse(x + 3*r, y, 2*r, r); |
| 974 | |
| 975 | y += 2*r; |
| 976 | dc.DrawText("And arcs", 0, y); |
| 977 | dc.DrawArc(x - r, y, x + r, y, x, y); |
| 978 | dc.DrawArc(x + 4*r, y, x + 2*r, y, x + 3*r, y); |
| 979 | dc.DrawArc(x + 5*r, y, x + 5*r, y, x + 6*r, y); |
| 980 | |
| 981 | y += 2*r; |
| 982 | dc.DrawEllipticArc(x - r, y, 2*r, r, 0, 90); |
| 983 | dc.DrawEllipticArc(x + r, y, 2*r, r, 90, 180); |
| 984 | dc.DrawEllipticArc(x + 3*r, y, 2*r, r, 180, 270); |
| 985 | dc.DrawEllipticArc(x + 5*r, y, 2*r, r, 270, 360); |
| 986 | } |
| 987 | |
| 988 | void MyCanvas::DrawRegions(wxDC& dc) |
| 989 | { |
| 990 | dc.DrawText("You should see a red rect partly covered by a cyan one " |
| 991 | "on the left", 10, 5); |
| 992 | dc.DrawText("and 5 smileys from which 4 are partially clipped on the " |
| 993 | "right (2 copies should be identical)", |
| 994 | 10, 5 + dc.GetCharHeight()); |
| 995 | |
| 996 | DrawRegionsHelper(dc, 10); |
| 997 | DrawRegionsHelper(dc, 350); |
| 998 | } |
| 999 | |
| 1000 | void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x) |
| 1001 | { |
| 1002 | dc.DestroyClippingRegion(); |
| 1003 | dc.SetBrush( *wxWHITE_BRUSH ); |
| 1004 | dc.SetPen( *wxTRANSPARENT_PEN ); |
| 1005 | dc.DrawRectangle( x,50,310,310 ); |
| 1006 | |
| 1007 | dc.SetClippingRegion( x+10,60,100,270 ); |
| 1008 | |
| 1009 | dc.SetBrush( *wxRED_BRUSH ); |
| 1010 | dc.DrawRectangle( x,50,310,310 ); |
| 1011 | |
| 1012 | dc.SetClippingRegion( x+10,60,100,100 ); |
| 1013 | |
| 1014 | dc.SetBrush( *wxCYAN_BRUSH ); |
| 1015 | dc.DrawRectangle( x,50,310,310 ); |
| 1016 | |
| 1017 | // when drawing the left half, destroy the clipping region, when drawing |
| 1018 | // the right one - leave it |
| 1019 | // |
| 1020 | // normally it shouldn't make any difference as SetClippingRegion() |
| 1021 | // replaces the old clipping region |
| 1022 | if ( x < 300 ) |
| 1023 | dc.DestroyClippingRegion(); |
| 1024 | dc.SetClippingRegion( x+110,70,100,270 ); |
| 1025 | |
| 1026 | dc.SetBrush( *wxGREY_BRUSH ); |
| 1027 | dc.DrawRectangle( x,50,310,310 ); |
| 1028 | |
| 1029 | if (m_smile_bmp.Ok()) |
| 1030 | { |
| 1031 | dc.DrawBitmap( m_smile_bmp, x+150, 200, TRUE ); |
| 1032 | dc.DrawBitmap( m_smile_bmp, x+130, 60, TRUE ); |
| 1033 | dc.DrawBitmap( m_smile_bmp, x+130, 330, TRUE ); |
| 1034 | dc.DrawBitmap( m_smile_bmp, x+100, 120, TRUE ); |
| 1035 | dc.DrawBitmap( m_smile_bmp, x+200, 120, TRUE ); |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) |
| 1040 | { |
| 1041 | wxPaintDC dc(this); |
| 1042 | PrepareDC(dc); |
| 1043 | |
| 1044 | m_owner->PrepareDC(dc); |
| 1045 | |
| 1046 | dc.SetBackgroundMode( m_owner->m_backgroundMode ); |
| 1047 | if ( m_owner->m_backgroundBrush.Ok() ) |
| 1048 | dc.SetBackground( m_owner->m_backgroundBrush ); |
| 1049 | if ( m_owner->m_colourForeground.Ok() ) |
| 1050 | dc.SetTextForeground( m_owner->m_colourForeground ); |
| 1051 | if ( m_owner->m_colourBackground.Ok() ) |
| 1052 | dc.SetTextBackground( m_owner->m_colourBackground ); |
| 1053 | |
| 1054 | if ( m_owner->m_textureBackground) { |
| 1055 | if ( ! m_owner->m_backgroundBrush.Ok() ) { |
| 1056 | wxBrush b(wxColour(0,128,0), wxSOLID); |
| 1057 | dc.SetBackground(b); |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | dc.Clear(); |
| 1062 | |
| 1063 | if ( m_owner->m_textureBackground) { |
| 1064 | dc.SetPen(*wxMEDIUM_GREY_PEN); |
| 1065 | for (int i=0; i<200; i++) |
| 1066 | dc.DrawLine(0, i*10, i*10, 0); |
| 1067 | } |
| 1068 | |
| 1069 | switch ( m_show ) |
| 1070 | { |
| 1071 | case Show_Default: |
| 1072 | DrawDefault(dc); |
| 1073 | break; |
| 1074 | |
| 1075 | case Show_Circles: |
| 1076 | DrawCircles(dc); |
| 1077 | break; |
| 1078 | |
| 1079 | case Show_Regions: |
| 1080 | DrawRegions(dc); |
| 1081 | break; |
| 1082 | |
| 1083 | case Show_Text: |
| 1084 | DrawText(dc); |
| 1085 | break; |
| 1086 | |
| 1087 | case Show_Lines: |
| 1088 | DrawTestLines( 0, 100, 0, dc ); |
| 1089 | DrawTestLines( 0, 320, 1, dc ); |
| 1090 | DrawTestLines( 0, 540, 2, dc ); |
| 1091 | DrawTestLines( 0, 760, 6, dc ); |
| 1092 | break; |
| 1093 | |
| 1094 | case Show_Polygons: |
| 1095 | DrawTestPoly( 0, 100, dc, 0 ); |
| 1096 | /* |
| 1097 | DrawTestPoly( 33, 500, dc, 1 ); |
| 1098 | DrawTestPoly( 43, 1000, dc, 2 ); |
| 1099 | */ |
| 1100 | break; |
| 1101 | |
| 1102 | case Show_Mask: |
| 1103 | DrawImages(dc); |
| 1104 | break; |
| 1105 | |
| 1106 | case Show_Ops: |
| 1107 | DrawWithLogicalOps(dc); |
| 1108 | break; |
| 1109 | |
| 1110 | default: |
| 1111 | { |
| 1112 | dc.SetPen( *wxBLACK_PEN ); |
| 1113 | dc.DrawLine( 0,0,100,100 ); |
| 1114 | } |
| 1115 | |
| 1116 | } |
| 1117 | } |
| 1118 | |
| 1119 | void MyCanvas::OnMouseMove(wxMouseEvent &event) |
| 1120 | { |
| 1121 | wxClientDC dc(this); |
| 1122 | PrepareDC(dc); |
| 1123 | m_owner->PrepareDC(dc); |
| 1124 | |
| 1125 | wxPoint pos = event.GetPosition(); |
| 1126 | long x = dc.DeviceToLogicalX( pos.x ); |
| 1127 | long y = dc.DeviceToLogicalY( pos.y ); |
| 1128 | wxString str; |
| 1129 | str.Printf( "Current mouse position: %d,%d", (int)x, (int)y ); |
| 1130 | m_owner->SetStatusText( str ); |
| 1131 | } |
| 1132 | |
| 1133 | // ---------------------------------------------------------------------------- |
| 1134 | // MyFrame |
| 1135 | // ---------------------------------------------------------------------------- |
| 1136 | |
| 1137 | // the event tables connect the wxWindows events with the functions (event |
| 1138 | // handlers) which process them. It can be also done at run-time, but for the |
| 1139 | // simple menu events like this the static method is much simpler. |
| 1140 | BEGIN_EVENT_TABLE(MyFrame, wxFrame) |
| 1141 | EVT_MENU (File_Quit, MyFrame::OnQuit) |
| 1142 | EVT_MENU (File_About, MyFrame::OnAbout) |
| 1143 | |
| 1144 | EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow) |
| 1145 | |
| 1146 | EVT_MENU_RANGE(MenuOption_First, MenuOption_Last, MyFrame::OnOption) |
| 1147 | END_EVENT_TABLE() |
| 1148 | |
| 1149 | // frame constructor |
| 1150 | MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) |
| 1151 | : wxFrame((wxFrame *)NULL, -1, title, pos, size, |
| 1152 | wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE) |
| 1153 | { |
| 1154 | // set the frame icon |
| 1155 | SetIcon(wxICON(mondrian)); |
| 1156 | |
| 1157 | wxMenu *menuFile = new wxMenu; |
| 1158 | menuFile->Append(File_ShowDefault, "&Default screen\tF1"); |
| 1159 | menuFile->Append(File_ShowText, "&Text screen\tF2"); |
| 1160 | menuFile->Append(File_ShowLines, "&Lines screen\tF3"); |
| 1161 | menuFile->Append(File_ShowPolygons, "&Polygons screen\tF4"); |
| 1162 | menuFile->Append(File_ShowMask, "wx&Mask screen\tF5"); |
| 1163 | menuFile->Append(File_ShowOps, "&ROP screen\tF6"); |
| 1164 | menuFile->Append(File_ShowRegions, "Re&gions screen\tF7"); |
| 1165 | menuFile->Append(File_ShowCircles, "&Circles screen\tF8"); |
| 1166 | menuFile->AppendSeparator(); |
| 1167 | menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog"); |
| 1168 | menuFile->AppendSeparator(); |
| 1169 | menuFile->Append(File_Quit, "E&xit\tAlt-X", "Quit this program"); |
| 1170 | |
| 1171 | wxMenu *menuMapMode = new wxMenu; |
| 1172 | menuMapMode->Append( MapMode_Text, "&TEXT map mode" ); |
| 1173 | menuMapMode->Append( MapMode_Lometric, "&LOMETRIC map mode" ); |
| 1174 | menuMapMode->Append( MapMode_Twips, "T&WIPS map mode" ); |
| 1175 | menuMapMode->Append( MapMode_Points, "&POINTS map mode" ); |
| 1176 | menuMapMode->Append( MapMode_Metric, "&METRIC map mode" ); |
| 1177 | |
| 1178 | wxMenu *menuUserScale = new wxMenu; |
| 1179 | menuUserScale->Append( UserScale_StretchHoriz, "Stretch horizontally\tCtrl-H" ); |
| 1180 | menuUserScale->Append( UserScale_ShrinkHoriz, "Shrink horizontally\tCtrl-G" ); |
| 1181 | menuUserScale->Append( UserScale_StretchVertic, "Stretch vertically\tCtrl-V" ); |
| 1182 | menuUserScale->Append( UserScale_ShrinkVertic, "Shrink vertically\tCtrl-W" ); |
| 1183 | menuUserScale->AppendSeparator(); |
| 1184 | menuUserScale->Append( UserScale_Restore, "Restore to normal\tCtrl-0" ); |
| 1185 | |
| 1186 | wxMenu *menuAxis = new wxMenu; |
| 1187 | menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M", "", TRUE ); |
| 1188 | menuAxis->Append( AxisMirror_Vertic, "Mirror vertically\tCtrl-N", "", TRUE ); |
| 1189 | |
| 1190 | wxMenu *menuLogical = new wxMenu; |
| 1191 | menuLogical->Append( LogicalOrigin_MoveDown, "Move &down\tCtrl-D" ); |
| 1192 | menuLogical->Append( LogicalOrigin_MoveUp, "Move &up\tCtrl-U" ); |
| 1193 | menuLogical->Append( LogicalOrigin_MoveLeft, "Move &right\tCtrl-L" ); |
| 1194 | menuLogical->Append( LogicalOrigin_MoveRight, "Move &left\tCtrl-R" ); |
| 1195 | |
| 1196 | wxMenu *menuColour = new wxMenu; |
| 1197 | menuColour->Append( Colour_TextForeground, "Text foreground..." ); |
| 1198 | menuColour->Append( Colour_TextBackground, "Text background..." ); |
| 1199 | menuColour->Append( Colour_Background, "Background colour..." ); |
| 1200 | menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE ); |
| 1201 | menuColour->Append( Colour_TextureBackgound, "Draw textured background\tCtrl-T", "", TRUE); |
| 1202 | |
| 1203 | // now append the freshly created menu to the menu bar... |
| 1204 | wxMenuBar *menuBar = new wxMenuBar; |
| 1205 | menuBar->Append(menuFile, "&File"); |
| 1206 | menuBar->Append(menuMapMode, "&MapMode"); |
| 1207 | menuBar->Append(menuUserScale, "&UserScale"); |
| 1208 | menuBar->Append(menuAxis, "&Axis"); |
| 1209 | menuBar->Append(menuLogical, "&LogicalOrigin"); |
| 1210 | menuBar->Append(menuColour, "&Colours"); |
| 1211 | |
| 1212 | // ... and attach this menu bar to the frame |
| 1213 | SetMenuBar(menuBar); |
| 1214 | |
| 1215 | // create a status bar just for fun (by default with 1 pane only) |
| 1216 | CreateStatusBar(2); |
| 1217 | SetStatusText("Welcome to wxWindows!"); |
| 1218 | |
| 1219 | m_mapMode = wxMM_TEXT; |
| 1220 | m_xUserScale = 1.0; |
| 1221 | m_yUserScale = 1.0; |
| 1222 | m_xLogicalOrigin = 0; |
| 1223 | m_yLogicalOrigin = 0; |
| 1224 | m_xAxisReversed = |
| 1225 | m_yAxisReversed = FALSE; |
| 1226 | m_backgroundMode = wxSOLID; |
| 1227 | m_colourForeground = *wxRED; |
| 1228 | m_colourBackground = *wxBLUE; |
| 1229 | m_textureBackground = FALSE; |
| 1230 | |
| 1231 | m_canvas = new MyCanvas( this ); |
| 1232 | m_canvas->SetScrollbars( 10, 10, 100, 240 ); |
| 1233 | } |
| 1234 | |
| 1235 | // event handlers |
| 1236 | |
| 1237 | void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) |
| 1238 | { |
| 1239 | // TRUE is to force the frame to close |
| 1240 | Close(TRUE); |
| 1241 | } |
| 1242 | |
| 1243 | void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) |
| 1244 | { |
| 1245 | wxString msg; |
| 1246 | msg.Printf( wxT("This is the about dialog of the drawing sample.\n") |
| 1247 | wxT("This sample tests various primitive drawing functions\n") |
| 1248 | wxT("without any tests to prevent flicker.\n") |
| 1249 | wxT("Copyright (c) Robert Roebling 1999") |
| 1250 | ); |
| 1251 | |
| 1252 | wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this); |
| 1253 | } |
| 1254 | |
| 1255 | void MyFrame::OnShow(wxCommandEvent& event) |
| 1256 | { |
| 1257 | m_canvas->Show((ScreenToShow)(event.GetId() - MenuShow_First)); |
| 1258 | } |
| 1259 | |
| 1260 | void MyFrame::OnOption(wxCommandEvent& event) |
| 1261 | { |
| 1262 | switch (event.GetId()) |
| 1263 | { |
| 1264 | case MapMode_Text: |
| 1265 | m_mapMode = wxMM_TEXT; |
| 1266 | break; |
| 1267 | case MapMode_Lometric: |
| 1268 | m_mapMode = wxMM_LOMETRIC; |
| 1269 | break; |
| 1270 | case MapMode_Twips: |
| 1271 | m_mapMode = wxMM_TWIPS; |
| 1272 | break; |
| 1273 | case MapMode_Points: |
| 1274 | m_mapMode = wxMM_POINTS; |
| 1275 | break; |
| 1276 | case MapMode_Metric: |
| 1277 | m_mapMode = wxMM_METRIC; |
| 1278 | break; |
| 1279 | |
| 1280 | case LogicalOrigin_MoveDown: |
| 1281 | m_yLogicalOrigin += 10; |
| 1282 | break; |
| 1283 | case LogicalOrigin_MoveUp: |
| 1284 | m_yLogicalOrigin -= 10; |
| 1285 | break; |
| 1286 | case LogicalOrigin_MoveLeft: |
| 1287 | m_xLogicalOrigin += 10; |
| 1288 | break; |
| 1289 | case LogicalOrigin_MoveRight: |
| 1290 | m_xLogicalOrigin -= 10; |
| 1291 | break; |
| 1292 | |
| 1293 | case UserScale_StretchHoriz: |
| 1294 | m_xUserScale *= 1.10; |
| 1295 | break; |
| 1296 | case UserScale_ShrinkHoriz: |
| 1297 | m_xUserScale /= 1.10; |
| 1298 | break; |
| 1299 | case UserScale_StretchVertic: |
| 1300 | m_yUserScale *= 1.10; |
| 1301 | break; |
| 1302 | case UserScale_ShrinkVertic: |
| 1303 | m_yUserScale /= 1.10; |
| 1304 | break; |
| 1305 | case UserScale_Restore: |
| 1306 | m_xUserScale = |
| 1307 | m_yUserScale = 1.0; |
| 1308 | break; |
| 1309 | |
| 1310 | case AxisMirror_Vertic: |
| 1311 | m_yAxisReversed = !m_yAxisReversed; |
| 1312 | break; |
| 1313 | case AxisMirror_Horiz: |
| 1314 | m_xAxisReversed = !m_xAxisReversed; |
| 1315 | break; |
| 1316 | |
| 1317 | case Colour_TextForeground: |
| 1318 | m_colourForeground = SelectColour(); |
| 1319 | break; |
| 1320 | case Colour_TextBackground: |
| 1321 | m_colourBackground = SelectColour(); |
| 1322 | break; |
| 1323 | case Colour_Background: |
| 1324 | { |
| 1325 | wxColour col = SelectColour(); |
| 1326 | if ( col.Ok() ) |
| 1327 | { |
| 1328 | m_backgroundBrush.SetColour(col); |
| 1329 | } |
| 1330 | } |
| 1331 | break; |
| 1332 | case Colour_BackgroundMode: |
| 1333 | m_backgroundMode = m_backgroundMode == wxSOLID ? wxTRANSPARENT |
| 1334 | : wxSOLID; |
| 1335 | break; |
| 1336 | |
| 1337 | case Colour_TextureBackgound: |
| 1338 | m_textureBackground = ! m_textureBackground; |
| 1339 | break; |
| 1340 | |
| 1341 | default: |
| 1342 | // skip Refresh() |
| 1343 | return; |
| 1344 | } |
| 1345 | |
| 1346 | m_canvas->Refresh(); |
| 1347 | } |
| 1348 | |
| 1349 | void MyFrame::PrepareDC(wxDC& dc) |
| 1350 | { |
| 1351 | dc.SetMapMode( m_mapMode ); |
| 1352 | dc.SetUserScale( m_xUserScale, m_yUserScale ); |
| 1353 | dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin ); |
| 1354 | dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed ); |
| 1355 | } |
| 1356 | |
| 1357 | wxColour MyFrame::SelectColour() |
| 1358 | { |
| 1359 | wxColour col; |
| 1360 | wxColourData data; |
| 1361 | wxColourDialog dialog(this, &data); |
| 1362 | |
| 1363 | if ( dialog.ShowModal() == wxID_OK ) |
| 1364 | { |
| 1365 | col = dialog.GetColourData().GetColour(); |
| 1366 | } |
| 1367 | |
| 1368 | return col; |
| 1369 | } |