src/gtk/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "bitmap.h"
  12 #endif
  13
  14 #include "wx/bitmap.h"
  15 #include "wx/icon.h"
  16 #include "wx/filefn.h"
  17 #include "wx/image.h"
  18
  19 #include <gdk/gdk.h>
  20 #include <gdk/gdkprivate.h>
  21 #include <gdk/gdkx.h>
  22
  23 //-----------------------------------------------------------------------------
  24 // wxMask
  25 //-----------------------------------------------------------------------------
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  28
  29 wxMask::wxMask()
  30 {
  31     m_bitmap = (GdkBitmap *) NULL;
  32 }
  33
  34 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  35 {
  36     m_bitmap = (GdkBitmap *) NULL;
  37     Create( bitmap, colour );
  38 }
  39
  40 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  41 {
  42     m_bitmap = (GdkBitmap *) NULL;
  43     Create( bitmap, paletteIndex );
  44 }
  45
  46 wxMask::wxMask( const wxBitmap& bitmap )
  47 {
  48     m_bitmap = (GdkBitmap *) NULL;
  49     Create( bitmap );
  50 }
  51
  52 wxMask::~wxMask()
  53 {
  54     if (m_bitmap)
  55         gdk_bitmap_unref( m_bitmap );
  56 }
  57
  58 bool wxMask::Create( const wxBitmap& bitmap,
  59                      const wxColour& colour )
  60 {
  61     if (m_bitmap)
  62     {
  63         gdk_bitmap_unref( m_bitmap );
  64         m_bitmap = (GdkBitmap*) NULL;
  65     }
  66
  67     wxImage image( bitmap );
  68     if (!image.Ok()) return FALSE;
  69
  70     GdkVisual *visual = gdk_visual_get_system();
  71
  72     GdkImage *mask_image = gdk_image_new( GDK_IMAGE_FASTEST, visual, image.GetWidth(), image.GetHeight() );
  73     if (!mask_image) return FALSE;
  74
  75     GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
  76     m_bitmap = gdk_pixmap_new( parent, image.GetWidth(), image.GetHeight(), 1 );
  77
  78
  79     unsigned char *data = image.GetData();
  80     int index = 0;
  81
  82     unsigned char red = colour.Red();
  83     unsigned char green = colour.Green();
  84     unsigned char blue = colour.Blue();
  85
  86     int bpp = visual->depth;
  87     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
  88     if (bpp == 15)
  89     {
  90         red = red & 0xf8;
  91         blue = blue & 0xf8;
  92         green = green & 0xf8;
  93     }
  94     if (bpp == 16)
  95     {
  96         red = red & 0xf8;
  97         blue = blue & 0xfc;
  98         green = green & 0xf8;
  99     }
 100
 101     for (int j = 0; j < image.GetHeight(); j++)
 102       for (int i = 0; i < image.GetWidth(); i++)
 103         {
 104             if ((data[index] == red) &&
 105                 (data[index+1] == green) &&
 106                 (data[index+2] == blue))
 107             {
 108                 gdk_image_put_pixel( mask_image, i, j, 1 );
 109             }
 110             else
 111             {
 112                 gdk_image_put_pixel( mask_image, i, j, 1 );
 113             }
 114             index += 3;
 115         }
 116
 117     GdkGC *mask_gc = gdk_gc_new( m_bitmap );
 118
 119     gdk_draw_image( m_bitmap, mask_gc, mask_image, 0, 0, 0, 0, image.GetWidth(), image.GetHeight() );
 120
 121     gdk_gc_unref( mask_gc );
 122     gdk_image_destroy( mask_image );
 123
 124     return FALSE;
 125 }
 126
 127 bool wxMask::Create( const wxBitmap& WXUNUSED(bitmap),
 128                      int WXUNUSED(paletteIndex) )
 129 {
 130     if (m_bitmap)
 131     {
 132         gdk_bitmap_unref( m_bitmap );
 133         m_bitmap = (GdkBitmap*) NULL;
 134     }
 135
 136     wxFAIL_MSG( wxT("not implemented") );
 137
 138     return FALSE;
 139 }
 140
 141 bool wxMask::Create( const wxBitmap& bitmap )
 142 {
 143     if (m_bitmap)
 144     {
 145         gdk_bitmap_unref( m_bitmap );
 146         m_bitmap = (GdkBitmap*) NULL;
 147     }
 148
 149     if (!bitmap.Ok()) return FALSE;
 150
 151     wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
 152
 153     m_bitmap = gdk_pixmap_new( (GdkWindow*) &gdk_root_parent, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 154
 155     if (!m_bitmap) return FALSE;
 156
 157     GdkGC *gc = gdk_gc_new( m_bitmap );
 158
 159     gdk_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
 160
 161     gdk_gc_unref( gc );
 162
 163     return TRUE;
 164 }
 165
 166 GdkBitmap *wxMask::GetBitmap() const
 167 {
 168     return m_bitmap;
 169 }
 170
 171 //-----------------------------------------------------------------------------
 172 // wxBitmap
 173 //-----------------------------------------------------------------------------
 174
 175 class wxBitmapRefData: public wxObjectRefData
 176 {
 177 public:
 178   wxBitmapRefData();
 179   ~wxBitmapRefData();
 180
 181   GdkPixmap      *m_pixmap;
 182   GdkBitmap      *m_bitmap;
 183   wxMask         *m_mask;
 184   int             m_width;
 185   int             m_height;
 186   int             m_bpp;
 187   wxPalette      *m_palette;
 188 };
 189
 190 wxBitmapRefData::wxBitmapRefData()
 191 {
 192     m_pixmap = (GdkPixmap *) NULL;
 193     m_bitmap = (GdkBitmap *) NULL;
 194     m_mask = (wxMask *) NULL;
 195     m_width = 0;
 196     m_height = 0;
 197     m_bpp = 0;
 198     m_palette = (wxPalette *) NULL;
 199 }
 200
 201 wxBitmapRefData::~wxBitmapRefData()
 202 {
 203     if (m_pixmap) gdk_pixmap_unref( m_pixmap );
 204     if (m_bitmap) gdk_bitmap_unref( m_bitmap );
 205     if (m_mask) delete m_mask;
 206     if (m_palette) delete m_palette;
 207 }
 208
 209 //-----------------------------------------------------------------------------
 210
 211 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 212
 213 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 214
 215 wxBitmap::wxBitmap()
 216 {
 217     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 218 }
 219
 220 wxBitmap::wxBitmap( int width, int height, int depth )
 221 {
 222     wxCHECK_RET( (width > 0) && (height > 0), wxT("invalid bitmap size") )
 223
 224     GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
 225     if (depth == -1) depth = gdk_window_get_visual( parent )->depth;
 226
 227     wxCHECK_RET( (depth ==  gdk_window_get_visual( parent )->depth) ||
 228                  (depth == 1), wxT("invalid bitmap depth") )
 229
 230     m_refData = new wxBitmapRefData();
 231     M_BMPDATA->m_mask = (wxMask *) NULL;
 232     M_BMPDATA->m_width = width;
 233     M_BMPDATA->m_height = height;
 234     if (depth == 1)
 235     {
 236         M_BMPDATA->m_bitmap = gdk_pixmap_new( parent, width, height, 1 );
 237         M_BMPDATA->m_bpp = 1;
 238     }
 239     else
 240     {
 241         M_BMPDATA->m_pixmap = gdk_pixmap_new( parent, width, height, depth );
 242         M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;
 243     }
 244
 245     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 246 }
 247
 248 bool wxBitmap::CreateFromXpm( const char **bits )
 249 {
 250     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 251
 252     m_refData = new wxBitmapRefData();
 253
 254     GdkBitmap *mask = (GdkBitmap*) NULL;
 255     GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
 256
 257     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( parent, &mask, NULL, (gchar **) bits );
 258
 259     wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
 260
 261     if (mask)
 262     {
 263         M_BMPDATA->m_mask = new wxMask();
 264         M_BMPDATA->m_mask->m_bitmap = mask;
 265     }
 266
 267     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 268
 269     M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;  // ?
 270     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 271
 272     return TRUE;
 273 }
 274
 275 wxBitmap::wxBitmap( const wxBitmap& bmp )
 276 {
 277     Ref( bmp );
 278
 279     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 280 }
 281
 282 wxBitmap::wxBitmap( const wxString &filename, int type )
 283 {
 284     LoadFile( filename, type );
 285
 286     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 287 }
 288
 289 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
 290 {
 291     m_refData = new wxBitmapRefData();
 292
 293     M_BMPDATA->m_mask = (wxMask *) NULL;
 294     M_BMPDATA->m_bitmap =
 295       gdk_bitmap_create_from_data( (GdkWindow*) &gdk_root_parent, (gchar *) bits, width, height );
 296     M_BMPDATA->m_width = width;
 297     M_BMPDATA->m_height = height;
 298     M_BMPDATA->m_bpp = 1;
 299
 300     wxCHECK_RET( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
 301
 302     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 303 }
 304
 305 wxBitmap::~wxBitmap()
 306 {
 307     if (wxTheBitmapList) wxTheBitmapList->DeleteObject(this);
 308 }
 309
 310 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
 311 {
 312     if (*this == bmp) return (*this);
 313     Ref( bmp );
 314     return *this;
 315 }
 316
 317 bool wxBitmap::operator == ( const wxBitmap& bmp )
 318 {
 319     return m_refData == bmp.m_refData;
 320 }
 321
 322 bool wxBitmap::operator != ( const wxBitmap& bmp )
 323 {
 324     return m_refData != bmp.m_refData;
 325 }
 326
 327 bool wxBitmap::Ok() const
 328 {
 329     return (m_refData != NULL);
 330 }
 331
 332 int wxBitmap::GetHeight() const
 333 {
 334     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 335
 336     return M_BMPDATA->m_height;
 337 }
 338
 339 int wxBitmap::GetWidth() const
 340 {
 341     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 342
 343     return M_BMPDATA->m_width;
 344 }
 345
 346 int wxBitmap::GetDepth() const
 347 {
 348     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 349
 350     return M_BMPDATA->m_bpp;
 351 }
 352
 353 wxMask *wxBitmap::GetMask() const
 354 {
 355     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
 356
 357     return M_BMPDATA->m_mask;
 358 }
 359
 360 void wxBitmap::SetMask( wxMask *mask )
 361 {
 362     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 363
 364     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
 365
 366     M_BMPDATA->m_mask = mask;
 367 }
 368
 369 bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
 370 {
 371     wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
 372
 373     // Try to save the bitmap via wxImage handlers:
 374     {
 375         wxImage image( *this );
 376         if (image.Ok()) return image.SaveFile( name, type );
 377     }
 378
 379     return FALSE;
 380 }
 381
 382 bool wxBitmap::LoadFile( const wxString &name, int type )
 383 {
 384     UnRef();
 385
 386     if (!wxFileExists(name)) return FALSE;
 387
 388     if (type == wxBITMAP_TYPE_XPM)
 389     {
 390         m_refData = new wxBitmapRefData();
 391
 392         GdkBitmap *mask = (GdkBitmap*) NULL;
 393         GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
 394
 395         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm( parent, &mask, NULL, name.fn_str() );
 396
 397         if (mask)
 398         {
 399            M_BMPDATA->m_mask = new wxMask();
 400            M_BMPDATA->m_mask->m_bitmap = mask;
 401         }
 402
 403         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 404         M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;
 405     }
 406     else // try if wxImage can load it
 407     {
 408         wxImage image;
 409         if (!image.LoadFile( name, type )) return FALSE;
 410         if (image.Ok()) *this = image.ConvertToBitmap();
 411         else return FALSE;
 412     }
 413
 414     return TRUE;
 415 }
 416
 417 wxPalette *wxBitmap::GetPalette() const
 418 {
 419     if (!Ok()) return (wxPalette *) NULL;
 420
 421     return M_BMPDATA->m_palette;
 422 }
 423
 424 void wxBitmap::SetHeight( int height )
 425 {
 426     if (!m_refData) m_refData = new wxBitmapRefData();
 427
 428     M_BMPDATA->m_height = height;
 429 }
 430
 431 void wxBitmap::SetWidth( int width )
 432 {
 433     if (!m_refData) m_refData = new wxBitmapRefData();
 434
 435     M_BMPDATA->m_width = width;
 436 }
 437
 438 void wxBitmap::SetDepth( int depth )
 439 {
 440     if (!m_refData) m_refData = new wxBitmapRefData();
 441
 442     M_BMPDATA->m_bpp = depth;
 443 }
 444
 445 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
 446 {
 447     if (!m_refData) m_refData = new wxBitmapRefData();
 448
 449     M_BMPDATA->m_pixmap = pixmap;
 450 }
 451
 452 GdkPixmap *wxBitmap::GetPixmap() const
 453 {
 454     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
 455
 456     return M_BMPDATA->m_pixmap;
 457 }
 458
 459 GdkBitmap *wxBitmap::GetBitmap() const
 460 {
 461     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
 462
 463     return M_BMPDATA->m_bitmap;
 464 }