src/gtk/artgtk.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/artgtk.cpp
   3 // Purpose:     stock wxArtProvider instance with native GTK+ stock icons
   4 // Author:      Vaclav Slavik
   5 // Modified by:
   6 // Created:     2004-08-22
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vaclav Slavik, 2004
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ---------------------------------------------------------------------------
  13 // headers
  14 // ---------------------------------------------------------------------------
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #if defined(__BORLANDC__)
  20     #pragma hdrstop
  21 #endif
  22
  23 #include "wx/artprov.h"
  24 #include "wx/gtk/private.h"
  25
  26 // compatibility with older GTK+ versions:
  27 #ifndef GTK_STOCK_FILE
  28     #define GTK_STOCK_FILE "gtk-file"
  29 #endif
  30 #ifndef GTK_STOCK_DIRECTORY
  31     #define GTK_STOCK_DIRECTORY "gtk-directory"
  32 #endif
  33
  34
  35 // ----------------------------------------------------------------------------
  36 // wxGTK2ArtProvider
  37 // ----------------------------------------------------------------------------
  38
  39 class wxGTK2ArtProvider : public wxArtProvider
  40 {
  41 protected:
  42     virtual wxBitmap CreateBitmap(const wxArtID& id, const wxArtClient& client,
  43                                   const wxSize& size);
  44     virtual wxIconBundle CreateIconBundle(const wxArtID& id,
  45                                           const wxArtClient& client);
  46 };
  47
  48 /*static*/ void wxArtProvider::InitNativeProvider()
  49 {
  50     Push(new wxGTK2ArtProvider);
  51 }
  52
  53 // ----------------------------------------------------------------------------
  54 // CreateBitmap routine
  55 // ----------------------------------------------------------------------------
  56
  57 namespace
  58 {
  59
  60 wxString wxArtIDToStock(const wxArtID& id)
  61 {
  62     #define ART(wxid, gtkid) \
  63            if (id == wxid) return gtkid;
  64
  65     ART(wxART_ERROR,                               GTK_STOCK_DIALOG_ERROR)
  66     ART(wxART_INFORMATION,                         GTK_STOCK_DIALOG_INFO)
  67     ART(wxART_WARNING,                             GTK_STOCK_DIALOG_WARNING)
  68     ART(wxART_QUESTION,                            GTK_STOCK_DIALOG_QUESTION)
  69
  70     //ART(wxART_HELP_SIDE_PANEL,                     )
  71     ART(wxART_HELP_SETTINGS,                       GTK_STOCK_SELECT_FONT)
  72     //ART(wxART_HELP_BOOK,                           )
  73     ART(wxART_HELP_FOLDER,                         GTK_STOCK_DIRECTORY)
  74     ART(wxART_HELP_PAGE,                           GTK_STOCK_FILE)
  75     ART(wxART_MISSING_IMAGE,                       GTK_STOCK_MISSING_IMAGE)
  76     ART(wxART_ADD_BOOKMARK,                        GTK_STOCK_ADD)
  77     ART(wxART_DEL_BOOKMARK,                        GTK_STOCK_REMOVE)
  78     ART(wxART_GO_BACK,                             GTK_STOCK_GO_BACK)
  79     ART(wxART_GO_FORWARD,                          GTK_STOCK_GO_FORWARD)
  80     ART(wxART_GO_UP,                               GTK_STOCK_GO_UP)
  81     ART(wxART_GO_DOWN,                             GTK_STOCK_GO_DOWN)
  82     ART(wxART_GO_TO_PARENT,                        GTK_STOCK_GO_UP)
  83     ART(wxART_GO_HOME,                             GTK_STOCK_HOME)
  84     ART(wxART_GOTO_FIRST,                          GTK_STOCK_GOTO_FIRST)
  85     ART(wxART_GOTO_LAST,                           GTK_STOCK_GOTO_LAST)
  86     ART(wxART_FILE_OPEN,                           GTK_STOCK_OPEN)
  87     ART(wxART_PRINT,                               GTK_STOCK_PRINT)
  88     ART(wxART_HELP,                                GTK_STOCK_HELP)
  89     ART(wxART_TIP,                                 GTK_STOCK_DIALOG_INFO)
  90     //ART(wxART_REPORT_VIEW,                         )
  91     //ART(wxART_LIST_VIEW,                           )
  92     //ART(wxART_NEW_DIR,                             )
  93     ART(wxART_FOLDER,                              GTK_STOCK_DIRECTORY)
  94     ART(wxART_FOLDER_OPEN,                         GTK_STOCK_DIRECTORY)
  95     //ART(wxART_GO_DIR_UP,                           )
  96     ART(wxART_EXECUTABLE_FILE,                     GTK_STOCK_EXECUTE)
  97     ART(wxART_NORMAL_FILE,                         GTK_STOCK_FILE)
  98     ART(wxART_TICK_MARK,                           GTK_STOCK_APPLY)
  99     ART(wxART_CROSS_MARK,                          GTK_STOCK_CANCEL)
 100
 101     ART(wxART_FLOPPY,                              GTK_STOCK_FLOPPY)
 102     ART(wxART_CDROM,                               GTK_STOCK_CDROM)
 103     ART(wxART_HARDDISK,                            GTK_STOCK_HARDDISK)
 104     ART(wxART_REMOVABLE,                           GTK_STOCK_HARDDISK)
 105
 106     ART(wxART_FILE_SAVE,                           GTK_STOCK_SAVE)
 107     ART(wxART_FILE_SAVE_AS,                        GTK_STOCK_SAVE_AS)
 108
 109     ART(wxART_COPY,                                GTK_STOCK_COPY)
 110     ART(wxART_CUT,                                 GTK_STOCK_CUT)
 111     ART(wxART_PASTE,                               GTK_STOCK_PASTE)
 112     ART(wxART_DELETE,                              GTK_STOCK_DELETE)
 113     ART(wxART_NEW,                                 GTK_STOCK_NEW)
 114
 115     ART(wxART_UNDO,                                GTK_STOCK_UNDO)
 116     ART(wxART_REDO,                                GTK_STOCK_REDO)
 117
 118     ART(wxART_PLUS,                                GTK_STOCK_ADD)
 119     ART(wxART_MINUS,                               GTK_STOCK_REMOVE)
 120
 121     ART(wxART_CLOSE,                               GTK_STOCK_CLOSE)
 122     ART(wxART_QUIT,                                GTK_STOCK_QUIT)
 123
 124     ART(wxART_FIND,                                GTK_STOCK_FIND)
 125     ART(wxART_FIND_AND_REPLACE,                    GTK_STOCK_FIND_AND_REPLACE)
 126
 127     #undef ART
 128
 129     // allow passing GTK+ stock IDs to wxArtProvider -- if a recognized wx
 130     // ID wasn't found, pass it to GTK+ in the hope it is a GTK+ or theme
 131     // icon name:
 132     return id;
 133 }
 134
 135 GtkIconSize ArtClientToIconSize(const wxArtClient& client)
 136 {
 137     if (client == wxART_TOOLBAR)
 138         return GTK_ICON_SIZE_LARGE_TOOLBAR;
 139     else if (client == wxART_MENU || client == wxART_FRAME_ICON)
 140         return GTK_ICON_SIZE_MENU;
 141     else if (client == wxART_CMN_DIALOG || client == wxART_MESSAGE_BOX)
 142         return GTK_ICON_SIZE_DIALOG;
 143     else if (client == wxART_BUTTON)
 144         return GTK_ICON_SIZE_BUTTON;
 145     else
 146         return GTK_ICON_SIZE_INVALID; // this is arbitrary
 147 }
 148
 149 GtkIconSize FindClosestIconSize(const wxSize& size)
 150 {
 151     #define NUM_SIZES 6
 152     static struct
 153     {
 154         GtkIconSize icon;
 155         gint x, y;
 156     } s_sizes[NUM_SIZES];
 157     static bool s_sizesInitialized = false;
 158
 159     if (!s_sizesInitialized)
 160     {
 161         s_sizes[0].icon = GTK_ICON_SIZE_MENU;
 162         s_sizes[1].icon = GTK_ICON_SIZE_SMALL_TOOLBAR;
 163         s_sizes[2].icon = GTK_ICON_SIZE_LARGE_TOOLBAR;
 164         s_sizes[3].icon = GTK_ICON_SIZE_BUTTON;
 165         s_sizes[4].icon = GTK_ICON_SIZE_DND;
 166         s_sizes[5].icon = GTK_ICON_SIZE_DIALOG;
 167         for (size_t i = 0; i < NUM_SIZES; i++)
 168         {
 169             gtk_icon_size_lookup(s_sizes[i].icon,
 170                                  &s_sizes[i].x, &s_sizes[i].y);
 171         }
 172         s_sizesInitialized = true;
 173     }
 174
 175     GtkIconSize best = GTK_ICON_SIZE_DIALOG; // presumably largest
 176     unsigned distance = INT_MAX;
 177     for (size_t i = 0; i < NUM_SIZES; i++)
 178     {
 179         // only use larger bitmaps, scaling down looks better than scaling up:
 180         if (size.x > s_sizes[i].x || size.y > s_sizes[i].y)
 181             continue;
 182
 183         unsigned dist = (size.x - s_sizes[i].x) * (size.x - s_sizes[i].x) +
 184                         (size.y - s_sizes[i].y) * (size.y - s_sizes[i].y);
 185         if (dist == 0)
 186             return s_sizes[i].icon;
 187         else if (dist < distance)
 188         {
 189             distance = dist;
 190             best = s_sizes[i].icon;
 191         }
 192     }
 193     return best;
 194 }
 195
 196 GdkPixbuf *CreateStockIcon(const char *stockid, GtkIconSize size)
 197 {
 198     // FIXME: This code is not 100% correct, because stock pixmap are
 199     //        context-dependent and may be affected by theme engine, the
 200     //        correct value can only be obtained for given GtkWidget object.
 201     //
 202     //        Fool-proof implementation of stock bitmaps would extend wxBitmap
 203     //        with "stock-id" representation (in addition to pixmap and pixbuf
 204     //        ones) and would convert it to pixbuf when rendered.
 205
 206     GtkStyle* style = gtk_widget_get_style(wxGTKPrivate::GetButtonWidget());
 207     GtkIconSet* iconset = gtk_style_lookup_icon_set(style, stockid);
 208
 209     if (!iconset)
 210         return NULL;
 211
 212     return gtk_icon_set_render_icon(iconset, style,
 213                                     gtk_widget_get_default_direction(),
 214                                     GTK_STATE_NORMAL, size, NULL, NULL);
 215 }
 216
 217 GdkPixbuf *CreateThemeIcon(const char *iconname, int size)
 218 {
 219     return gtk_icon_theme_load_icon
 220            (
 221                gtk_icon_theme_get_default(),
 222                iconname,
 223                size,
 224                (GtkIconLookupFlags)0,
 225                NULL
 226            );
 227 }
 228
 229
 230 // creates either stock or theme icon
 231 GdkPixbuf *CreateGtkIcon(const char *icon_name,
 232                          GtkIconSize stock_size, const wxSize& pixel_size)
 233 {
 234     // try stock GTK+ icon first
 235     GdkPixbuf *pixbuf = CreateStockIcon(icon_name, stock_size);
 236     if ( pixbuf )
 237         return pixbuf;
 238
 239     // if that fails, try theme icon
 240     wxSize size(pixel_size);
 241     if ( pixel_size == wxDefaultSize )
 242         gtk_icon_size_lookup(stock_size, &size.x, &size.y);
 243     return CreateThemeIcon(icon_name, size.x);
 244 }
 245
 246 template<typename SizeType, typename LoaderFunc>
 247 wxIconBundle DoCreateIconBundle(const char *stockid,
 248                                 const SizeType *sizes_from,
 249                                 const SizeType *sizes_to,
 250                                 LoaderFunc get_icon)
 251
 252 {
 253     wxIconBundle bundle;
 254
 255     for ( const SizeType *i = sizes_from; i != sizes_to; ++i )
 256     {
 257         GdkPixbuf *pixbuf = get_icon(stockid, *i);
 258         if ( !pixbuf )
 259             continue;
 260
 261         wxIcon icon;
 262         icon.SetPixbuf(pixbuf);
 263         bundle.AddIcon(icon);
 264     }
 265
 266     return bundle;
 267 }
 268
 269 } // anonymous namespace
 270
 271 wxBitmap wxGTK2ArtProvider::CreateBitmap(const wxArtID& id,
 272                                          const wxArtClient& client,
 273                                          const wxSize& size)
 274 {
 275     const wxString stockid = wxArtIDToStock(id);
 276
 277     GtkIconSize stocksize = (size == wxDefaultSize) ?
 278                                 ArtClientToIconSize(client) :
 279                                 FindClosestIconSize(size);
 280     // we must have some size, this is arbitrary
 281     if (stocksize == GTK_ICON_SIZE_INVALID)
 282         stocksize = GTK_ICON_SIZE_BUTTON;
 283
 284     GdkPixbuf *pixbuf = CreateGtkIcon(stockid.utf8_str(), stocksize, size);
 285
 286     if (pixbuf && size != wxDefaultSize &&
 287         (size.x != gdk_pixbuf_get_width(pixbuf) ||
 288          size.y != gdk_pixbuf_get_height(pixbuf)))
 289     {
 290         GdkPixbuf *p2 = gdk_pixbuf_scale_simple(pixbuf, size.x, size.y,
 291                                                 GDK_INTERP_BILINEAR);
 292         if (p2)
 293         {
 294             g_object_unref (pixbuf);
 295             pixbuf = p2;
 296         }
 297     }
 298
 299     wxBitmap bmp;
 300     if (pixbuf != NULL)
 301         bmp.SetPixbuf(pixbuf);
 302
 303     return bmp;
 304 }
 305
 306 wxIconBundle
 307 wxGTK2ArtProvider::CreateIconBundle(const wxArtID& id,
 308                                     const wxArtClient& WXUNUSED(client))
 309 {
 310     const wxString stockid = wxArtIDToStock(id);
 311
 312     // try to load the bundle as stock icon first
 313     GtkStyle* style = gtk_widget_get_style(wxGTKPrivate::GetButtonWidget());
 314     GtkIconSet* iconset = gtk_style_lookup_icon_set(style, stockid.utf8_str());
 315     if ( iconset )
 316     {
 317         GtkIconSize *sizes;
 318         gint n_sizes;
 319         gtk_icon_set_get_sizes(iconset, &sizes, &n_sizes);
 320         wxIconBundle bundle = DoCreateIconBundle
 321                               (
 322                                   stockid.utf8_str(),
 323                                   sizes, sizes + n_sizes,
 324                                   &CreateStockIcon
 325                               );
 326         g_free(sizes);
 327         return bundle;
 328     }
 329
 330     // otherwise try icon themes
 331 #ifdef __WXGTK26__
 332     if ( !gtk_check_version(2,6,0) )
 333     {
 334         gint *sizes = gtk_icon_theme_get_icon_sizes
 335                       (
 336                           gtk_icon_theme_get_default(),
 337                           stockid.utf8_str()
 338                       );
 339         if ( !sizes )
 340             return wxNullIconBundle;
 341
 342         gint *last = sizes;
 343         while ( *last )
 344             last++;
 345
 346         wxIconBundle bundle = DoCreateIconBundle
 347                               (
 348                                   stockid.utf8_str(),
 349                                   sizes, last,
 350                                   &CreateThemeIcon
 351                               );
 352         g_free(sizes);
 353         return bundle;
 354     }
 355 #endif // __WXGTK26__
 356
 357     return wxNullIconBundle;
 358 }
 359
 360 // ----------------------------------------------------------------------------
 361 // wxArtProvider::GetNativeSizeHint()
 362 // ----------------------------------------------------------------------------
 363
 364 /*static*/
 365 wxSize wxArtProvider::GetNativeSizeHint(const wxArtClient& client)
 366 {
 367     // Gtk has specific sizes for each client, see artgtk.cpp
 368     GtkIconSize gtk_size = ArtClientToIconSize(client);
 369     // no size hints for this client
 370     if (gtk_size == GTK_ICON_SIZE_INVALID)
 371         return wxDefaultSize;
 372     gint width, height;
 373     gtk_icon_size_lookup( gtk_size, &width, &height);
 374     return wxSize(width, height);
 375 }