src/x11/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      Julian Smart, Robert Roebling
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart, Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "bitmap.h"
  14 #endif
  15
  16 #include "wx/bitmap.h"
  17 #include "wx/icon.h"
  18 #include "wx/log.h"
  19 #include "wx/image.h"
  20 #include "wx/app.h"
  21
  22 #include "wx/x11/private.h"
  23
  24 #if wxHAVE_LIB_XPM
  25     #include <X11/xpm.h>
  26 #endif
  27 #include <math.h>
  28
  29 //-----------------------------------------------------------------------------
  30 // wxMask
  31 //-----------------------------------------------------------------------------
  32
  33 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  34
  35 wxMask::wxMask()
  36 {
  37     m_bitmap = NULL;
  38     m_display = NULL;
  39 }
  40
  41 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  42 {
  43     m_bitmap = NULL;
  44     Create( bitmap, colour );
  45 }
  46
  47 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  48 {
  49     m_bitmap = NULL;
  50     Create( bitmap, paletteIndex );
  51 }
  52
  53 wxMask::wxMask( const wxBitmap& bitmap )
  54 {
  55     m_bitmap = NULL;
  56     Create( bitmap );
  57 }
  58
  59 wxMask::~wxMask()
  60 {
  61     if (m_bitmap)
  62         XFreePixmap( (Display*) m_display, (Pixmap) m_bitmap );
  63 }
  64
  65 bool wxMask::Create( const wxBitmap& bitmap,
  66                      const wxColour& colour )
  67 {
  68     if (m_bitmap)
  69     {
  70         XFreePixmap( (Display*) m_display, (Pixmap) m_bitmap );
  71         m_bitmap = NULL;
  72     }
  73
  74     m_display = bitmap.GetDisplay();
  75
  76     wxImage image( bitmap );
  77     if (!image.Ok()) return FALSE;
  78
  79     m_display = bitmap.GetDisplay();
  80
  81     Display *xdisplay = (Display*) m_display;
  82
  83     int xscreen = DefaultScreen( xdisplay );
  84     Window xroot = RootWindow( xdisplay, xscreen );
  85     Visual* xvisual = DefaultVisual( xdisplay, xscreen );
  86     int bpp = DefaultDepth( xdisplay, xscreen );
  87
  88     m_bitmap = (WXPixmap) XCreatePixmap( xdisplay, xroot, image.GetWidth(), image.GetHeight(), 1 );
  89     GC gc = XCreateGC( xdisplay, (Pixmap) m_bitmap, 0, NULL );
  90
  91     XSetForeground( xdisplay, gc, WhitePixel(xdisplay,xscreen) );
  92     XSetFillStyle( xdisplay, gc, FillSolid );
  93     XFillRectangle( xdisplay, (Pixmap) m_bitmap, gc, 0, 0, image.GetWidth(), image.GetHeight() );
  94
  95     unsigned char *data = image.GetData();
  96     int index = 0;
  97
  98     unsigned char red = colour.Red();
  99     unsigned char green = colour.Green();
 100     unsigned char blue = colour.Blue();
 101
 102     XVisualInfo vinfo_template;
 103     XVisualInfo *vi;
 104
 105     vinfo_template.visual = xvisual;
 106     vinfo_template.visualid = XVisualIDFromVisual( xvisual );
 107     vinfo_template.depth = bpp;
 108     int nitem = 0;
 109
 110     vi = XGetVisualInfo( xdisplay, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
 111     wxASSERT_MSG( vi, wxT("No visual info") );
 112
 113     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
 114     if (bpp == 15)
 115     {
 116         red = red & 0xf8;
 117         green = green & 0xf8;
 118         blue = blue & 0xf8;
 119     } else
 120     if (bpp == 16)
 121     {
 122         red = red & 0xf8;
 123         green = green & 0xfc;
 124         blue = blue & 0xf8;
 125     } else
 126     if (bpp == 12)
 127     {
 128         red = red & 0xf0;
 129         green = green & 0xf0;
 130         blue = blue & 0xf0;
 131     }
 132
 133     XSetForeground( xdisplay, gc, BlackPixel(xdisplay,xscreen) );
 134
 135     for (int j = 0; j < image.GetHeight(); j++)
 136     {
 137         int start_x = -1;
 138         int i;
 139         for (i = 0; i < image.GetWidth(); i++)
 140         {
 141             if ((data[index] == red) &&
 142                 (data[index+1] == green) &&
 143                 (data[index+2] == blue))
 144             {
 145                 if (start_x == -1)
 146                 start_x = i;
 147             }
 148             else
 149             {
 150                 if (start_x != -1)
 151                 {
 152                     XDrawLine( xdisplay, (Pixmap) m_bitmap, gc, start_x, j, i-1, j );
 153                     start_x = -1;
 154                 }
 155             }
 156             index += 3;
 157         }
 158         if (start_x != -1)
 159             XDrawLine( xdisplay, (Pixmap) m_bitmap, gc, start_x, j, i, j );
 160     }
 161
 162     XFreeGC( xdisplay, gc );
 163
 164     return TRUE;
 165 }
 166
 167 bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
 168 {
 169     unsigned char r,g,b;
 170     wxPalette *pal = bitmap.GetPalette();
 171
 172     wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
 173
 174     pal->GetRGB(paletteIndex, &r, &g, &b);
 175
 176     return Create(bitmap, wxColour(r, g, b));
 177 }
 178
 179 bool wxMask::Create( const wxBitmap& bitmap )
 180 {
 181     if (m_bitmap)
 182     {
 183         XFreePixmap( (Display*) m_display, (Pixmap) m_bitmap );
 184         m_bitmap = NULL;
 185     }
 186
 187     if (!bitmap.Ok()) return FALSE;
 188
 189     wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
 190
 191     m_display = bitmap.GetDisplay();
 192
 193     int xscreen = DefaultScreen( (Display*) m_display );
 194     Window xroot = RootWindow( (Display*) m_display, xscreen );
 195
 196     m_bitmap = (WXPixmap) XCreatePixmap( (Display*) m_display, xroot, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 197
 198     if (!m_bitmap) return FALSE;
 199
 200     GC gc = XCreateGC( (Display*) m_display, (Pixmap) m_bitmap, 0, NULL );
 201
 202     XCopyPlane( (Display*) m_display, (Pixmap) bitmap.GetBitmap(), (Pixmap) m_bitmap,
 203        gc, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), 0, 0, 1 );
 204
 205     XFreeGC( (Display*) m_display, gc );
 206
 207     return TRUE;
 208 }
 209
 210 //-----------------------------------------------------------------------------
 211 // wxBitmap
 212 //-----------------------------------------------------------------------------
 213
 214 class wxBitmapRefData: public wxObjectRefData
 215 {
 216 public:
 217     wxBitmapRefData();
 218     ~wxBitmapRefData();
 219
 220     WXPixmap        m_pixmap;
 221     WXPixmap        m_bitmap;
 222     WXDisplay      *m_display;
 223     wxMask         *m_mask;
 224     int             m_width;
 225     int             m_height;
 226     int             m_bpp;
 227     wxPalette      *m_palette;
 228 };
 229
 230 wxBitmapRefData::wxBitmapRefData()
 231 {
 232     m_pixmap = NULL;
 233     m_bitmap = NULL;
 234     m_display = NULL;
 235     m_mask = (wxMask *) NULL;
 236     m_width = 0;
 237     m_height = 0;
 238     m_bpp = 0;
 239     m_palette = (wxPalette *) NULL;
 240 }
 241
 242 wxBitmapRefData::~wxBitmapRefData()
 243 {
 244     if (m_pixmap) XFreePixmap( (Display*) m_display, (Pixmap) m_pixmap );
 245     if (m_bitmap) XFreePixmap( (Display*) m_display, (Pixmap) m_bitmap );
 246     if (m_mask) delete m_mask;
 247     if (m_palette) delete m_palette;
 248 }
 249
 250 //-----------------------------------------------------------------------------
 251
 252 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 253
 254 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 255
 256 wxBitmap::wxBitmap()
 257 {
 258 }
 259
 260 wxBitmap::wxBitmap( int width, int height, int depth )
 261 {
 262     Create( width, height, depth );
 263 }
 264
 265 bool wxBitmap::Create( int width, int height, int depth )
 266 {
 267     UnRef();
 268
 269     wxCHECK_MSG( (width > 0) && (height > 0), FALSE, wxT("invalid bitmap size") )
 270
 271     m_refData = new wxBitmapRefData();
 272
 273     M_BMPDATA->m_display = wxGlobalDisplay();
 274
 275     wxASSERT_MSG( M_BMPDATA->m_display, wxT("No display") );
 276
 277     int xscreen = DefaultScreen( (Display*) M_BMPDATA->m_display );
 278     Window xroot = RootWindow( (Display*) M_BMPDATA->m_display, xscreen );
 279
 280     int bpp = DefaultDepth( (Display*) M_BMPDATA->m_display, xscreen );
 281     if (depth == -1) depth = bpp;
 282
 283     wxCHECK_MSG( (depth == bpp) ||
 284                  (depth == 1), FALSE, wxT("invalid bitmap depth") )
 285
 286     M_BMPDATA->m_mask = (wxMask *) NULL;
 287     M_BMPDATA->m_width = width;
 288     M_BMPDATA->m_height = height;
 289     if (depth == 1)
 290     {
 291         M_BMPDATA->m_bitmap = (WXPixmap) XCreatePixmap( (Display*) M_BMPDATA->m_display, xroot, width, height, 1 );
 292
 293         wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("Bitmap creation failed") );
 294
 295         M_BMPDATA->m_bpp = 1;
 296     }
 297     else
 298     {
 299         M_BMPDATA->m_pixmap = (WXPixmap) XCreatePixmap( (Display*) M_BMPDATA->m_display, xroot, width, height, depth );
 300
 301         wxASSERT_MSG( M_BMPDATA->m_pixmap, wxT("Pixmap creation failed") );
 302
 303         M_BMPDATA->m_bpp = depth;
 304     }
 305
 306     return Ok();
 307 }
 308
 309 bool wxBitmap::CreateFromXpm( const char **bits )
 310 {
 311     UnRef();
 312
 313     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 314
 315     m_refData = new wxBitmapRefData();
 316
 317     M_BMPDATA->m_display = wxGlobalDisplay();
 318
 319     Display *xdisplay = (Display*) M_BMPDATA->m_display;
 320
 321     int xscreen = DefaultScreen( xdisplay );
 322     Window xroot = RootWindow( xdisplay, xscreen );
 323
 324     int bpp = DefaultDepth( xdisplay, xscreen );
 325
 326     XpmAttributes xpmAttr;
 327     xpmAttr.valuemask = XpmReturnInfos;    // nothing yet, but get infos back
 328
 329     Pixmap pixmap;
 330     Pixmap mask = 0;
 331
 332     int ErrorStatus = XpmCreatePixmapFromData( xdisplay, xroot, (char**) bits, &pixmap, &mask, &xpmAttr );
 333
 334     if (ErrorStatus == XpmSuccess)
 335     {
 336         M_BMPDATA->m_width = xpmAttr.width;
 337         M_BMPDATA->m_height = xpmAttr.height;
 338
 339         M_BMPDATA->m_bpp = bpp;  // mono as well?
 340
 341 #if __WXDEBUG__
 342         unsigned int depthRet;
 343         int xRet, yRet;
 344         unsigned int widthRet, heightRet, borderWidthRet;
 345         XGetGeometry( xdisplay, pixmap, &xroot, &xRet, &yRet,
 346             &widthRet, &heightRet, &borderWidthRet, &depthRet);
 347
 348         wxASSERT_MSG( bpp == (int)depthRet, wxT("colour depth mismatch") )
 349 #endif
 350
 351         XpmFreeAttributes(&xpmAttr);
 352
 353         M_BMPDATA->m_pixmap = (WXPixmap) pixmap;
 354
 355         if (mask)
 356         {
 357             M_BMPDATA->m_mask = new wxMask;
 358             M_BMPDATA->m_mask->SetBitmap( (WXPixmap) mask );
 359             M_BMPDATA->m_mask->SetDisplay( xdisplay );
 360         }
 361     }
 362     else
 363     {
 364         UnRef();
 365
 366         return FALSE;
 367     }
 368
 369     return TRUE;
 370 }
 371
 372 bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
 373 {
 374     UnRef();
 375
 376     wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
 377     wxCHECK_MSG( depth == -1, FALSE, wxT("invalid bitmap depth") )
 378
 379     m_refData = new wxBitmapRefData();
 380
 381     M_BMPDATA->m_display = wxGlobalDisplay();
 382
 383     Display *xdisplay = (Display*) M_BMPDATA->m_display;
 384
 385     int xscreen = DefaultScreen( xdisplay );
 386     Window xroot = RootWindow( xdisplay, xscreen );
 387     Visual* xvisual = DefaultVisual( xdisplay, xscreen );
 388
 389     int bpp = DefaultDepth( xdisplay, xscreen );
 390
 391     int width = image.GetWidth();
 392     int height = image.GetHeight();
 393     M_BMPDATA->m_width = width;
 394     M_BMPDATA->m_height = height;
 395
 396     if (depth != 1) depth = bpp;
 397     M_BMPDATA->m_bpp = depth;
 398
 399     if (depth == 1)
 400     {
 401         wxFAIL_MSG( "mono images later" );
 402     }
 403     else
 404     {
 405         // Create image
 406
 407         XImage *data_image = XCreateImage( xdisplay, xvisual, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
 408         data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
 409
 410         if (data_image->data == NULL)
 411         {
 412             wxLogError( wxT("Out of memory.") );  // TODO clean
 413             return FALSE;
 414         }
 415
 416         M_BMPDATA->m_pixmap = (WXPixmap) XCreatePixmap( xdisplay, xroot, width, height, depth );
 417
 418         // Create mask
 419
 420         XImage *mask_image = (XImage*) NULL;
 421         if (image.HasMask())
 422         {
 423             mask_image = XCreateImage( xdisplay, xvisual, 1, ZPixmap, 0, 0, width, height, 32, 0 );
 424             mask_image->data = (char*) malloc( mask_image->bytes_per_line * mask_image->height );
 425
 426             if (mask_image->data == NULL)
 427             {
 428                 wxLogError( wxT("Out of memory.") ); // TODO clean
 429                 return FALSE;
 430             }
 431
 432             wxMask *mask = new wxMask();
 433             mask->SetDisplay( xdisplay );
 434             mask->SetBitmap( (WXPixmap) XCreatePixmap( xdisplay, xroot, width, height, 1 ) );
 435
 436             SetMask( mask );
 437         }
 438
 439         // Retrieve info
 440
 441         XVisualInfo vinfo_template;
 442         XVisualInfo *vi;
 443
 444         vinfo_template.visual = xvisual;
 445         vinfo_template.visualid = XVisualIDFromVisual( xvisual );
 446         vinfo_template.depth = bpp;
 447         int nitem = 0;
 448
 449         vi = XGetVisualInfo( xdisplay, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
 450         wxASSERT_MSG( vi, wxT("No visual info") );
 451
 452         if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
 453         if (bpp < 8) bpp = 8;
 454
 455         // Render
 456
 457         enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
 458         byte_order b_o = RGB;
 459
 460         if (bpp > 8)
 461         {
 462             if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
 463             else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RBG;
 464             else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
 465             else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
 466             else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
 467             else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
 468         }
 469
 470         XFree( vi );
 471
 472         int r_mask = image.GetMaskRed();
 473         int g_mask = image.GetMaskGreen();
 474         int b_mask = image.GetMaskBlue();
 475
 476         unsigned char* data = image.GetData();
 477         wxASSERT_MSG( data, "No image data" );
 478
 479         bool hasMask = image.HasMask();
 480
 481         int index = 0;
 482         for (int y = 0; y < height; y++)
 483         {
 484             for (int x = 0; x < width; x++)
 485             {
 486                 int r = data[index];
 487                 index++;
 488                 int g = data[index];
 489                 index++;
 490                 int b = data[index];
 491                 index++;
 492
 493                 if (hasMask)
 494                 {
 495                     if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 496                         XPutPixel( mask_image, x, y, 0 );
 497                     else
 498                         XPutPixel( mask_image, x, y, 1 );
 499                 }
 500
 501                 switch (bpp)
 502                 {
 503                     case 8:
 504                     {
 505                         int pixel = 0;
 506 #if 0
 507                         if (wxTheApp->m_colorCube)
 508                         {
 509                             pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
 510                         }
 511                         else
 512                         {
 513                             GdkColormap *cmap = gtk_widget_get_default_colormap();
 514                             GdkColor *colors = cmap->colors;
 515                             int max = 3 * (65536);
 516
 517                             for (int i = 0; i < cmap->size; i++)
 518                             {
 519                                 int rdiff = (r << 8) - colors[i].red;
 520                                 int gdiff = (g << 8) - colors[i].green;
 521                                 int bdiff = (b << 8) - colors[i].blue;
 522                                 int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 523                                 if (sum < max) { pixel = i; max = sum; }
 524                             }
 525                         }
 526 #endif
 527                         XPutPixel( data_image, x, y, pixel );
 528                         break;
 529                     }
 530                     case 12:  // SGI only
 531                     {
 532                         int pixel = 0;
 533                         switch (b_o)
 534                         {
 535                             case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
 536                             case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
 537                             case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
 538                             case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
 539                             case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
 540                             case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
 541                         }
 542                         XPutPixel( data_image, x, y, pixel );
 543                         break;
 544                     }
 545                     case 15:
 546                     {
 547                         int pixel = 0;
 548                         switch (b_o)
 549                         {
 550                             case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 551                             case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 552                             case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 553                             case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 554                             case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 555                             case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 556                         }
 557                         XPutPixel( data_image, x, y, pixel );
 558                         break;
 559                     }
 560                     case 16:
 561                     {
 562                         // I actually don't know if for 16-bit displays, it is alway the green
 563                         // component or the second component which has 6 bits.
 564                         int pixel = 0;
 565                         switch (b_o)
 566                         {
 567                             case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 568                             case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 569                             case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 570                             case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 571                             case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 572                             case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 573                         }
 574                         XPutPixel( data_image, x, y, pixel );
 575                         break;
 576                     }
 577                     case 32:
 578                     case 24:
 579                     {
 580                         int pixel = 0;
 581                         switch (b_o)
 582                         {
 583                             case RGB: pixel = (r << 16) | (g << 8) | b; break;
 584                             case RBG: pixel = (r << 16) | (b << 8) | g; break;
 585                             case BRG: pixel = (b << 16) | (r << 8) | g; break;
 586                             case BGR: pixel = (b << 16) | (g << 8) | r; break;
 587                             case GRB: pixel = (g << 16) | (r << 8) | b; break;
 588                             case GBR: pixel = (g << 16) | (b << 8) | r; break;
 589                         }
 590                         XPutPixel( data_image, x, y, pixel );
 591                     }
 592                     default: break;
 593                 }
 594             } // for
 595         }  // for
 596
 597         // Blit picture
 598
 599         GC gc = XCreateGC( xdisplay, (Pixmap) M_BMPDATA->m_pixmap, 0, NULL );
 600         XPutImage( xdisplay, (Pixmap) M_BMPDATA->m_pixmap, gc, data_image, 0, 0, 0, 0, width, height );
 601
 602         XDestroyImage( data_image );
 603         XFreeGC( xdisplay, gc );
 604
 605         // Blit mask
 606
 607         if (image.HasMask())
 608         {
 609             GC gc = XCreateGC( xdisplay, (Pixmap) GetMask()->GetBitmap(), 0, NULL );
 610             XPutImage( xdisplay, (Pixmap) GetMask()->GetBitmap(), gc, data_image, 0, 0, 0, 0, width, height );
 611
 612             XDestroyImage( mask_image );
 613             XFreeGC( xdisplay, gc );
 614         }
 615     }
 616
 617     return TRUE;
 618 }
 619
 620 static void wxCalcPrecAndShift( unsigned long mask, int *shift, int *prec )
 621 {
 622   *shift = 0;
 623   *prec = 0;
 624
 625   while (!(mask & 0x1))
 626     {
 627       (*shift)++;
 628       mask >>= 1;
 629     }
 630
 631   while (mask & 0x1)
 632     {
 633       (*prec)++;
 634       mask >>= 1;
 635     }
 636 }
 637
 638 wxImage wxBitmap::ConvertToImage() const
 639 {
 640     wxImage image;
 641
 642     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 643
 644     Display *xdisplay = (Display*) M_BMPDATA->m_display;
 645     wxASSERT_MSG( xdisplay, wxT("No display") );
 646
 647     int xscreen = DefaultScreen( xdisplay );
 648     Visual* xvisual = DefaultVisual( xdisplay, xscreen );
 649
 650     int bpp = DefaultDepth( xdisplay, xscreen );
 651
 652     XImage *x_image = NULL;
 653     if (GetPixmap())
 654     {
 655         x_image = XGetImage( xdisplay, (Pixmap) GetPixmap(),
 656             0, 0,
 657             GetWidth(), GetHeight(),
 658             AllPlanes, ZPixmap );
 659     } else
 660     if (GetBitmap())
 661     {
 662         x_image = XGetImage( xdisplay, (Pixmap) GetBitmap(),
 663             0, 0,
 664             GetWidth(), GetHeight(),
 665             AllPlanes, ZPixmap );
 666     } else
 667     {
 668         wxFAIL_MSG( wxT("Ill-formed bitmap") );
 669     }
 670
 671     wxCHECK_MSG( x_image, wxNullImage, wxT("couldn't create image") );
 672
 673     image.Create( GetWidth(), GetHeight() );
 674     char unsigned *data = image.GetData();
 675
 676     if (!data)
 677     {
 678         XDestroyImage( x_image );
 679         wxFAIL_MSG( wxT("couldn't create image") );
 680         return wxNullImage;
 681     }
 682
 683     XImage *x_image_mask = NULL;
 684     if (GetMask())
 685     {
 686         x_image_mask = XGetImage( xdisplay, (Pixmap) GetMask()->GetBitmap(),
 687             0, 0,
 688             GetWidth(), GetHeight(),
 689             AllPlanes, ZPixmap );
 690
 691         image.SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
 692     }
 693
 694     int red_shift_right = 0;
 695     int green_shift_right = 0;
 696     int blue_shift_right = 0;
 697     int red_shift_left = 0;
 698     int green_shift_left = 0;
 699     int blue_shift_left = 0;
 700     bool use_shift = FALSE;
 701
 702     if (GetPixmap())
 703     {
 704         // Retrieve info
 705
 706         XVisualInfo vinfo_template;
 707         XVisualInfo *vi;
 708
 709         vinfo_template.visual = xvisual;
 710         vinfo_template.visualid = XVisualIDFromVisual( xvisual );
 711         vinfo_template.depth = bpp;
 712         int nitem = 0;
 713
 714         vi = XGetVisualInfo( xdisplay, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
 715         wxASSERT_MSG( vi, wxT("No visual info") );
 716
 717         int red_prec,green_prec,blue_prec;
 718         int red_shift,green_shift,blue_shift;
 719         wxCalcPrecAndShift( vi->red_mask, &red_shift, &red_prec );
 720         wxCalcPrecAndShift( vi->green_mask, &green_shift, &green_prec );
 721         wxCalcPrecAndShift( vi->blue_mask, &blue_shift, &blue_prec );
 722         if (bpp == 16) bpp = red_prec + green_prec + blue_prec;
 723
 724         red_shift_right = red_shift;
 725         red_shift_left = 8-red_prec;
 726         green_shift_right = green_shift;
 727         green_shift_left = 8-green_prec;
 728         blue_shift_right = blue_shift;
 729         blue_shift_left = 8-blue_prec;
 730
 731 #if 0
 732         use_shift = (vi->visual->c_class == TrueColor) || (vi->visual->c_class == DirectColor);
 733 #else
 734         use_shift = TRUE;
 735 #endif
 736
 737         XFree( vi );
 738     }
 739     if (GetBitmap())
 740     {
 741         bpp = 1;
 742     }
 743
 744
 745 //    GdkColormap *cmap = gtk_widget_get_default_colormap();
 746
 747     long pos = 0;
 748     for (int j = 0; j < GetHeight(); j++)
 749     {
 750         for (int i = 0; i < GetWidth(); i++)
 751         {
 752             unsigned long pixel = XGetPixel( x_image, i, j );
 753             if (bpp == 1)
 754             {
 755                 if (pixel == 0)
 756                 {
 757                     data[pos]   = 0;
 758                     data[pos+1] = 0;
 759                     data[pos+2] = 0;
 760                 }
 761                 else
 762                 {
 763                     data[pos]   = 255;
 764                     data[pos+1] = 255;
 765                     data[pos+2] = 255;
 766                 }
 767             }
 768             else if (use_shift)
 769             {
 770                 data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
 771                 data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
 772                 data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
 773             }
 774 #if 0
 775             else if (cmap->colors)
 776             {
 777                 data[pos] =   cmap->colors[pixel].red   >> 8;
 778                 data[pos+1] = cmap->colors[pixel].green >> 8;
 779                 data[pos+2] = cmap->colors[pixel].blue  >> 8;
 780             }
 781 #endif
 782             else
 783             {
 784                 wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
 785             }
 786
 787             if (x_image_mask)
 788             {
 789                 int mask_pixel = XGetPixel( x_image_mask, i, j );
 790                 if (mask_pixel == 0)
 791                 {
 792                     data[pos] = 16;
 793                     data[pos+1] = 16;
 794                     data[pos+2] = 16;
 795                 }
 796             }
 797
 798             pos += 3;
 799         }
 800     }
 801
 802     XDestroyImage( x_image );
 803     if (x_image_mask) XDestroyImage( x_image_mask );
 804
 805     return image;
 806 }
 807
 808 wxBitmap::wxBitmap( const wxBitmap& bmp )
 809 {
 810     Ref( bmp );
 811 }
 812
 813 wxBitmap::wxBitmap( const wxString &filename, int type )
 814 {
 815     LoadFile( filename, type );
 816 }
 817
 818 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth) )
 819 {
 820     m_refData = new wxBitmapRefData();
 821
 822     M_BMPDATA->m_display = wxGlobalDisplay();
 823
 824     Display *xdisplay = (Display*) M_BMPDATA->m_display;
 825
 826     int xscreen = DefaultScreen( xdisplay );
 827     Window xroot = RootWindow( xdisplay, xscreen );
 828
 829     M_BMPDATA->m_mask = (wxMask *) NULL;
 830     M_BMPDATA->m_bitmap = (WXPixmap) XCreateBitmapFromData( xdisplay, xroot, (char *) bits, width, height );
 831     M_BMPDATA->m_width = width;
 832     M_BMPDATA->m_height = height;
 833     M_BMPDATA->m_bpp = 1;
 834
 835     wxCHECK_RET( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
 836 }
 837
 838 wxBitmap::~wxBitmap()
 839 {
 840 }
 841
 842 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
 843 {
 844     if ( m_refData != bmp.m_refData )
 845         Ref( bmp );
 846
 847     return *this;
 848 }
 849
 850 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
 851 {
 852     return m_refData == bmp.m_refData;
 853 }
 854
 855 bool wxBitmap::operator != ( const wxBitmap& bmp ) const
 856 {
 857     return m_refData != bmp.m_refData;
 858 }
 859
 860 bool wxBitmap::Ok() const
 861 {
 862     return (m_refData != NULL);
 863 }
 864
 865 int wxBitmap::GetHeight() const
 866 {
 867     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 868
 869     return M_BMPDATA->m_height;
 870 }
 871
 872 int wxBitmap::GetWidth() const
 873 {
 874     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 875
 876     return M_BMPDATA->m_width;
 877 }
 878
 879 int wxBitmap::GetDepth() const
 880 {
 881     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 882
 883     return M_BMPDATA->m_bpp;
 884 }
 885
 886 wxMask *wxBitmap::GetMask() const
 887 {
 888     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
 889
 890     return M_BMPDATA->m_mask;
 891 }
 892
 893 void wxBitmap::SetMask( wxMask *mask )
 894 {
 895     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 896
 897     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
 898
 899     M_BMPDATA->m_mask = mask;
 900 }
 901
 902 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 903 {
 904     *this = icon;
 905     return TRUE;
 906 }
 907
 908 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 909 {
 910     wxCHECK_MSG( Ok() &&
 911                  (rect.x >= 0) && (rect.y >= 0) &&
 912                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
 913                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 914
 915     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
 916     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 917
 918
 919     wxFAIL_MSG( "wxBitmap::GetSubBitmap not yet implemented" );
 920
 921 #if 0
 922     if (ret.GetPixmap())
 923     {
 924         GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
 925         gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
 926         gdk_gc_destroy( gc );
 927     }
 928     else
 929     {
 930         GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
 931         gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
 932         gdk_gc_destroy( gc );
 933     }
 934
 935     if (GetMask())
 936     {
 937         wxMask *mask = new wxMask;
 938         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
 939
 940         GdkGC *gc = gdk_gc_new( mask->m_bitmap );
 941         gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, 0, 0, rect.x, rect.y, rect.width, rect.height );
 942         gdk_gc_destroy( gc );
 943
 944         ret.SetMask( mask );
 945     }
 946 #endif
 947
 948     return ret;
 949 }
 950
 951 bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
 952 {
 953     wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
 954
 955     // Try to save the bitmap via wxImage handlers:
 956     {
 957         wxImage image( *this );
 958         if (image.Ok()) return image.SaveFile( name, type );
 959     }
 960
 961     return FALSE;
 962 }
 963
 964 bool wxBitmap::LoadFile( const wxString &name, int type )
 965 {
 966     UnRef();
 967
 968     if (!wxFileExists(name)) return FALSE;
 969
 970
 971     if (type == wxBITMAP_TYPE_XPM)
 972     {
 973         m_refData = new wxBitmapRefData();
 974
 975         M_BMPDATA->m_display = wxGlobalDisplay();
 976
 977         Display *xdisplay = (Display*) M_BMPDATA->m_display;
 978
 979         int xscreen = DefaultScreen( xdisplay );
 980         Window xroot = RootWindow( xdisplay, xscreen );
 981
 982         int bpp = DefaultDepth( xdisplay, xscreen );
 983
 984         XpmAttributes xpmAttr;
 985         xpmAttr.valuemask = XpmReturnInfos;    // nothing yet, but get infos back
 986
 987         Pixmap pixmap;
 988         Pixmap mask = 0;
 989
 990         int ErrorStatus = XpmReadFileToPixmap( xdisplay, xroot, (char*) name.c_str(), &pixmap, &mask, &xpmAttr);
 991
 992         if (ErrorStatus == XpmSuccess)
 993         {
 994             M_BMPDATA->m_width = xpmAttr.width;
 995             M_BMPDATA->m_height = xpmAttr.height;
 996
 997             M_BMPDATA->m_bpp = bpp;  // mono as well?
 998
 999             XpmFreeAttributes(&xpmAttr);
1000
1001             M_BMPDATA->m_bitmap = (WXPixmap) pixmap;
1002
1003             if (mask)
1004             {
1005                 M_BMPDATA->m_mask = new wxMask;
1006                 M_BMPDATA->m_mask->SetBitmap( (WXPixmap) mask );
1007                 M_BMPDATA->m_mask->SetDisplay( xdisplay );
1008             }
1009         }
1010         else
1011         {
1012             UnRef();
1013
1014             return FALSE;
1015         }
1016     }
1017     else // try if wxImage can load it
1018     {
1019         wxImage image;
1020         if (!image.LoadFile( name, type )) return FALSE;
1021         if (image.Ok()) *this = image.ConvertToBitmap();
1022         else return FALSE;
1023     }
1024
1025     return TRUE;
1026 }
1027
1028 wxPalette *wxBitmap::GetPalette() const
1029 {
1030     if (!Ok()) return (wxPalette *) NULL;
1031
1032     return M_BMPDATA->m_palette;
1033 }
1034
1035 void wxBitmap::SetHeight( int height )
1036 {
1037     if (!m_refData) m_refData = new wxBitmapRefData();
1038
1039     M_BMPDATA->m_height = height;
1040 }
1041
1042 void wxBitmap::SetWidth( int width )
1043 {
1044     if (!m_refData) m_refData = new wxBitmapRefData();
1045
1046     M_BMPDATA->m_width = width;
1047 }
1048
1049 void wxBitmap::SetDepth( int depth )
1050 {
1051     if (!m_refData) m_refData = new wxBitmapRefData();
1052
1053     M_BMPDATA->m_bpp = depth;
1054 }
1055
1056 void wxBitmap::SetPixmap( WXPixmap pixmap )
1057 {
1058     if (!m_refData) m_refData = new wxBitmapRefData();
1059
1060     M_BMPDATA->m_pixmap = pixmap;
1061 }
1062
1063 void wxBitmap::SetBitmap( WXPixmap bitmap )
1064 {
1065     if (!m_refData) m_refData = new wxBitmapRefData();
1066
1067     M_BMPDATA->m_bitmap = bitmap;
1068 }
1069
1070 WXPixmap wxBitmap::GetPixmap() const
1071 {
1072     wxCHECK_MSG( Ok(), (WXPixmap) NULL, wxT("invalid bitmap") );
1073
1074     return M_BMPDATA->m_pixmap;
1075 }
1076
1077 WXPixmap wxBitmap::GetBitmap() const
1078 {
1079     wxCHECK_MSG( Ok(), (WXPixmap) NULL, wxT("invalid bitmap") );
1080
1081     return M_BMPDATA->m_bitmap;
1082 }
1083
1084 WXDisplay *wxBitmap::GetDisplay() const
1085 {
1086     wxCHECK_MSG( Ok(), (WXDisplay*) NULL, wxT("invalid bitmap") );
1087
1088     return M_BMPDATA->m_display;
1089 }
1090