src/dialogs/swatches.cpp

   1 /*
   2  * A simple panel for color swatches
   3  *
   4  * Authors:
   5  *   Jon A. Cruz
   6  *
   7  * Copyright (C) 2005 Jon A. Cruz
   8  *
   9  * Released under GNU GPL, read the file 'COPYING' for more information
  10  */
  11 #ifdef HAVE_CONFIG_H
  12 # include <config.h>
  13 #endif
  14
  15 #include <errno.h>
  16
  17 #include <gtk/gtkdialog.h> //for GTK_RESPONSE* types
  18 #include <gtk/gtkdnd.h>
  19
  20 #include <glibmm/i18n.h>
  21 #include <gdkmm/pixbuf.h>
  22 #include "inkscape.h"
  23 #include "document.h"
  24 #include "desktop-handles.h"
  25 #include "extension/db.h"
  26 #include "inkscape.h"
  27 #include "svg/svg-color.h"
  28 #include "desktop-style.h"
  29 #include "io/sys.h"
  30 #include "path-prefix.h"
  31 #include "swatches.h"
  32
  33 #include "eek-preview.h"
  34
  35 namespace Inkscape {
  36 namespace UI {
  37 namespace Dialogs {
  38
  39 SwatchesPanel* SwatchesPanel::instance = 0;
  40
  41
  42 ColorItem::ColorItem( unsigned int r, unsigned int g, unsigned int b, Glib::ustring& name ) :
  43     def( r, g, b, name )
  44 {
  45 }
  46
  47 ColorItem::~ColorItem()
  48 {
  49 }
  50
  51 ColorItem::ColorItem(ColorItem const &other) :
  52     Inkscape::UI::Previewable()
  53 {
  54     if ( this != &other ) {
  55         *this = other;
  56     }
  57 }
  58
  59 ColorItem &ColorItem::operator=(ColorItem const &other)
  60 {
  61     if ( this != &other ) {
  62         def = other.def;
  63     }
  64     return *this;
  65 }
  66
  67 typedef enum {
  68     XCOLOR_DATA = 0,
  69     TEXT_DATA
  70 } colorFlavorType;
  71
  72 static const GtkTargetEntry color_entries[] = {
  73     {"application/x-color", 0, XCOLOR_DATA},
  74     {"text/plain", 0, TEXT_DATA},
  75 };
  76
  77 static void dragGetColorData( GtkWidget *widget,
  78                               GdkDragContext *drag_context,
  79                               GtkSelectionData *data,
  80                               guint info,
  81                               guint time,
  82                               gpointer user_data)
  83 {
  84     static GdkAtom typeXColor = gdk_atom_intern("application/x-color", FALSE);
  85     static GdkAtom typeText = gdk_atom_intern("text/plain", FALSE);
  86
  87     ColorItem* item = reinterpret_cast<ColorItem*>(user_data);
  88     if ( info == 1 ) {
  89         gchar* tmp = g_strdup_printf("#%02x%02x%02x", item->def.r, item->def.g, item->def.b);
  90
  91         gtk_selection_data_set( data,
  92                                 typeText,
  93                                 8, // format
  94                                 (guchar*)tmp,
  95                                 strlen((const char*)tmp) + 1);
  96         g_free(tmp);
  97         tmp = 0;
  98     } else {
  99         guint16 tmp[4];
 100         tmp[0] = (item->def.r << 8) | item->def.r;
 101         tmp[1] = (item->def.g << 8) | item->def.g;
 102         tmp[2] = (item->def.b << 8) | item->def.b;
 103         tmp[3] = 0xffff;
 104         gtk_selection_data_set( data,
 105                                 typeXColor,
 106                                 16, // format
 107                                 reinterpret_cast<const guchar*>(tmp),
 108                                 (3+1) * 2);
 109     }
 110 }
 111
 112 static void dragBegin( GtkWidget *widget, GdkDragContext* dc, gpointer data )
 113 {
 114     ColorItem* item = reinterpret_cast<ColorItem*>(data);
 115     if ( item )
 116     {
 117         Glib::RefPtr<Gdk::Pixbuf> thumb = Gdk::Pixbuf::create( Gdk::COLORSPACE_RGB, false, 8, 32, 24 );
 118         guint32 fillWith = (0xff000000 & (item->def.r << 24))
 119                          | (0x00ff0000 & (item->def.g << 16))
 120                          | (0x0000ff00 & (item->def.b <<  8));
 121         thumb->fill( fillWith );
 122         gtk_drag_set_icon_pixbuf( dc, thumb->gobj(), 0, 0 );
 123     }
 124
 125 }
 126
 127 //"drag-drop"
 128 gboolean dragDropColorData( GtkWidget *widget,
 129                             GdkDragContext *drag_context,
 130                             gint x,
 131                             gint y,
 132                             guint time,
 133                             gpointer user_data)
 134 {
 135 // TODO finish
 136     return TRUE;
 137 }
 138
 139 static void bouncy( GtkWidget* widget, gpointer callback_data ) {
 140     ColorItem* item = reinterpret_cast<ColorItem*>(callback_data);
 141     if ( item ) {
 142         item->buttonClicked(false);
 143     }
 144 }
 145
 146 static void bouncy2( GtkWidget* widget, gint arg1, gpointer callback_data ) {
 147     ColorItem* item = reinterpret_cast<ColorItem*>(callback_data);
 148     if ( item ) {
 149         item->buttonClicked(true);
 150     }
 151 }
 152
 153 Gtk::Widget* ColorItem::getPreview(PreviewStyle style, ViewType view, Gtk::BuiltinIconSize size)
 154 {
 155     Gtk::Widget* widget = 0;
 156     if ( style == PREVIEW_STYLE_BLURB ) {
 157         Gtk::Label *lbl = new Gtk::Label(def.descr);
 158         lbl->set_alignment(Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER);
 159         widget = lbl;
 160     } else {
 161         Glib::ustring blank("          ");
 162         if ( size == Gtk::ICON_SIZE_MENU ) {
 163             blank = " ";
 164         }
 165
 166         GtkWidget* eekWidget = eek_preview_new();
 167         EekPreview * preview = EEK_PREVIEW(eekWidget);
 168         Gtk::Widget* newBlot = Glib::wrap(eekWidget);
 169
 170         eek_preview_set_color( preview, (def.r << 8) | def.r, (def.g << 8) | def.g, (def.b << 8) | def.b);
 171
 172         eek_preview_set_details( preview, (::PreviewStyle)style, (::ViewType)view, (::GtkIconSize)size );
 173
 174         GValue val = {0, {{0}, {0}}};
 175         g_value_init( &val, G_TYPE_BOOLEAN );
 176         g_value_set_boolean( &val, FALSE );
 177         g_object_set_property( G_OBJECT(preview), "focus-on-click", &val );
 178
 179 /*
 180         Gtk::Button *btn = new Gtk::Button(blank);
 181         Gdk::Color color;
 182         color.set_rgb((_r << 8)|_r, (_g << 8)|_g, (_b << 8)|_b);
 183         btn->modify_bg(Gtk::STATE_NORMAL, color);
 184         btn->modify_bg(Gtk::STATE_ACTIVE, color);
 185         btn->modify_bg(Gtk::STATE_PRELIGHT, color);
 186         btn->modify_bg(Gtk::STATE_SELECTED, color);
 187
 188         Gtk::Widget* newBlot = btn;
 189 */
 190
 191         tips.set_tip((*newBlot), def.descr);
 192
 193 /*
 194         newBlot->signal_clicked().connect( sigc::mem_fun(*this, &ColorItem::buttonClicked) );
 195
 196         sigc::signal<void> type_signal_something;
 197 */
 198         g_signal_connect( G_OBJECT(newBlot->gobj()),
 199                           "clicked",
 200                           G_CALLBACK(bouncy),
 201                           this);
 202
 203         g_signal_connect( G_OBJECT(newBlot->gobj()),
 204                           "alt-clicked",
 205                           G_CALLBACK(bouncy2),
 206                           this);
 207
 208         gtk_drag_source_set( GTK_WIDGET(newBlot->gobj()),
 209                              GDK_BUTTON1_MASK,
 210                              color_entries,
 211                              G_N_ELEMENTS(color_entries),
 212                              GdkDragAction(GDK_ACTION_MOVE | GDK_ACTION_COPY) );
 213
 214         g_signal_connect( G_OBJECT(newBlot->gobj()),
 215                           "drag-data-get",
 216                           G_CALLBACK(dragGetColorData),
 217                           this);
 218
 219         g_signal_connect( G_OBJECT(newBlot->gobj()),
 220                           "drag-begin",
 221                           G_CALLBACK(dragBegin),
 222                           this );
 223
 224         g_signal_connect( G_OBJECT(newBlot->gobj()),
 225                           "drag-drop",
 226                           G_CALLBACK(dragDropColorData),
 227                           this);
 228
 229         widget = newBlot;
 230     }
 231
 232     return widget;
 233 }
 234
 235 void ColorItem::buttonClicked(bool secondary)
 236 {
 237     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 238     if (desktop) {
 239         char const * attrName = secondary ? "stroke" : "fill";
 240         guint32 rgba = (def.r << 24) | (def.g << 16) | (def.b << 8) | 0xff;
 241         gchar c[64];
 242         sp_svg_write_color(c, 64, rgba);
 243
 244         SPCSSAttr *css = sp_repr_css_attr_new();
 245         sp_repr_css_set_property( css, attrName, c );
 246         sp_desktop_set_style(desktop, css);
 247
 248         sp_repr_css_attr_unref(css);
 249         sp_document_done (SP_DT_DOCUMENT (desktop));
 250     }
 251 }
 252
 253
 254
 255
 256 static char* trim( char* str ) {
 257     char* ret = str;
 258     while ( *str && (*str == ' ' || *str == '\t') ) {
 259         str++;
 260     }
 261     ret = str;
 262     while ( *str ) {
 263         str++;
 264     }
 265     str--;
 266     while ( str > ret && ( *str == ' ' || *str == '\t' ) || *str == '\r' || *str == '\n' ) {
 267         *str-- = 0;
 268     }
 269     return ret;
 270 }
 271
 272 void skipWhitespace( char*& str ) {
 273     while ( *str == ' ' || *str == '\t' ) {
 274         str++;
 275     }
 276 }
 277
 278 bool parseNum( char*& str, int& val ) {
 279     val = 0;
 280     while ( '0' <= *str && *str <= '9' ) {
 281         val = val * 10 + (*str - '0');
 282         str++;
 283     }
 284     bool retval = !(*str == 0 || *str == ' ' || *str == '\t' || *str == '\r' || *str == '\n');
 285     return retval;
 286 }
 287
 288
 289 class JustForNow
 290 {
 291 public:
 292     JustForNow() : _prefWidth(0) {}
 293
 294     Glib::ustring _name;
 295     int _prefWidth;
 296     std::vector<ColorItem*> _colors;
 297 };
 298
 299 static std::vector<JustForNow*> possible;
 300
 301 static void loadPaletteFile( gchar const *filename )
 302 {
 303     char block[1024];
 304     FILE *f = Inkscape::IO::fopen_utf8name( filename, "r" );
 305     if ( f ) {
 306         char* result = fgets( block, sizeof(block), f );
 307         if ( result ) {
 308             if ( strncmp( "GIMP Palette", block, 12 ) == 0 ) {
 309                 bool inHeader = true;
 310                 bool hasErr = false;
 311
 312                 JustForNow *onceMore = new JustForNow();
 313
 314                 do {
 315                     result = fgets( block, sizeof(block), f );
 316                     block[sizeof(block) - 1] = 0;
 317                     if ( result ) {
 318                         if ( block[0] == '#' ) {
 319                             // ignore comment
 320                         } else {
 321                             char *ptr = block;
 322                             // very simple check for header versus entry
 323                             while ( *ptr == ' ' || *ptr == '\t' ) {
 324                                 ptr++;
 325                             }
 326                             if ( *ptr == 0 ) {
 327                                 // blank line. skip it.
 328                             } else if ( '0' <= *ptr && *ptr <= '9' ) {
 329                                 // should be an entry link
 330                                 inHeader = false;
 331                                 ptr = block;
 332                                 Glib::ustring name("");
 333                                 int r = 0;
 334                                 int g = 0;
 335                                 int b = 0;
 336                                 skipWhitespace(ptr);
 337                                 if ( *ptr ) {
 338                                     hasErr = parseNum(ptr, r);
 339                                     if ( !hasErr ) {
 340                                         skipWhitespace(ptr);
 341                                         hasErr = parseNum(ptr, g);
 342                                     }
 343                                     if ( !hasErr ) {
 344                                         skipWhitespace(ptr);
 345                                         hasErr = parseNum(ptr, b);
 346                                     }
 347                                     if ( !hasErr && *ptr ) {
 348                                         char* n = trim(ptr);
 349                                         if (n != NULL) {
 350                                             name = n;
 351                                         }
 352                                     }
 353                                     if ( !hasErr ) {
 354                                         // Add the entry now
 355                                         Glib::ustring nameStr(name);
 356                                         ColorItem* item = new ColorItem( r, g, b, nameStr );
 357                                         onceMore->_colors.push_back(item);
 358                                     }
 359                                 } else {
 360                                     hasErr = true;
 361                                 }
 362                             } else {
 363                                 if ( !inHeader ) {
 364                                     // Hmmm... probably bad. Not quite the format we want?
 365                                     hasErr = true;
 366                                 } else {
 367                                     char* sep = strchr(result, ':');
 368                                     if ( sep ) {
 369                                         *sep = 0;
 370                                         char* val = trim(sep + 1);
 371                                         char* name = trim(result);
 372                                         if ( *name ) {
 373                                             if ( strcmp( "Name", name ) == 0 )
 374                                             {
 375                                                 onceMore->_name = val;
 376                                             }
 377                                             else if ( strcmp( "Columns", name ) == 0 )
 378                                             {
 379                                                 gchar* endPtr = 0;
 380                                                 guint64 numVal = g_ascii_strtoull( val, &endPtr, 10 );
 381                                                 if ( (numVal == G_MAXUINT64) && (ERANGE == errno) ) {
 382                                                     // overflow
 383                                                 } else if ( (numVal == 0) && (endPtr == val) ) {
 384                                                     // failed conversion
 385                                                 } else {
 386                                                     onceMore->_prefWidth = numVal;
 387                                                 }
 388                                             }
 389                                         } else {
 390                                             // error
 391                                             hasErr = true;
 392                                         }
 393                                     } else {
 394                                         // error
 395                                         hasErr = true;
 396                                     }
 397                                 }
 398                             }
 399                         }
 400                     }
 401                 } while ( result && !hasErr );
 402                 if ( !hasErr ) {
 403                     possible.push_back(onceMore);
 404                 } else {
 405                     delete onceMore;
 406                 }
 407             }
 408         }
 409
 410         fclose(f);
 411     }
 412 }
 413
 414 static void loadEmUp()
 415 {
 416     static bool beenHere = false;
 417     if ( !beenHere ) {
 418         beenHere = true;
 419
 420         std::list<gchar *> sources;
 421         sources.push_back( profile_path("palettes") );
 422         sources.push_back( g_strdup(INKSCAPE_PALETTESDIR) );
 423
 424         // Use this loop to iterate through a list of possible document locations.
 425         while (!sources.empty()) {
 426             gchar *dirname = sources.front();
 427
 428             if ( Inkscape::IO::file_test( dirname, (GFileTest)(G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR) ) ) {
 429                 GError *err = 0;
 430                 GDir *directory = g_dir_open(dirname, 0, &err);
 431                 if (!directory) {
 432                     gchar *safeDir = Inkscape::IO::sanitizeString(dirname);
 433                     g_warning(_("Palettes directory (%s) is unavailable."), safeDir);
 434                     g_free(safeDir);
 435                 } else {
 436                     gchar *filename = 0;
 437                     while ((filename = (gchar *)g_dir_read_name(directory)) != NULL) {
 438                         gchar* full = g_build_filename(dirname, filename, NULL);
 439                         if ( !Inkscape::IO::file_test( full, (GFileTest)(G_FILE_TEST_IS_DIR ) ) ) {
 440                             loadPaletteFile(full);
 441                         }
 442                         g_free(full);
 443                     }
 444                     g_dir_close(directory);
 445                 }
 446             }
 447
 448             // toss the dirname
 449             g_free(dirname);
 450             sources.pop_front();
 451         }
 452     }
 453 }
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463 SwatchesPanel& SwatchesPanel::getInstance()
 464 {
 465     if ( !instance ) {
 466         instance = new SwatchesPanel();
 467     }
 468
 469     return *instance;
 470 }
 471
 472
 473
 474 /**
 475  * Constructor
 476  */
 477 SwatchesPanel::SwatchesPanel() :
 478     Inkscape::UI::Widget::Panel ("dialogs.swatches"),
 479     _holder(0)
 480 {
 481     _holder = new PreviewHolder();
 482     loadEmUp();
 483
 484     if ( !possible.empty() ) {
 485         JustForNow* first = possible.front();
 486         if ( first->_prefWidth > 0 ) {
 487             _holder->setColumnPref( first->_prefWidth );
 488         }
 489         _holder->freezeUpdates();
 490         for ( std::vector<ColorItem*>::iterator it = first->_colors.begin(); it != first->_colors.end(); it++ ) {
 491             _holder->addPreview(*it);
 492         }
 493         _holder->thawUpdates();
 494
 495         Gtk::RadioMenuItem::Group groupOne;
 496         int i = 0;
 497         for ( std::vector<JustForNow*>::iterator it = possible.begin(); it != possible.end(); it++ ) {
 498             JustForNow* curr = *it;
 499             Gtk::RadioMenuItem* single = manage(new Gtk::RadioMenuItem(groupOne, curr->_name));
 500             _regItem( single, 3, i );
 501             i++;
 502         }
 503
 504     }
 505
 506
 507     _getContents()->pack_start(*_holder, Gtk::PACK_EXPAND_WIDGET);
 508     _setTargetFillable(_holder);
 509
 510     show_all_children();
 511
 512     restorePanelPrefs();
 513 }
 514
 515 SwatchesPanel::~SwatchesPanel()
 516 {
 517 }
 518
 519 void SwatchesPanel::setOrientation( Gtk::AnchorType how )
 520 {
 521     // Must call the parent class or bad things might happen
 522     Inkscape::UI::Widget::Panel::setOrientation( how );
 523
 524     if ( _holder )
 525     {
 526         _holder->setOrientation( Gtk::ANCHOR_SOUTH );
 527     }
 528 }
 529
 530 void SwatchesPanel::_handleAction( int setId, int itemId )
 531 {
 532     switch( setId ) {
 533         case 3:
 534         {
 535             if ( itemId >= 0 && itemId < static_cast<int>(possible.size()) ) {
 536                 _holder->clear();
 537                 JustForNow* curr = possible[itemId];
 538                 if ( curr->_prefWidth > 0 ) {
 539                     _holder->setColumnPref( curr->_prefWidth );
 540                 }
 541                 _holder->freezeUpdates();
 542                 for ( std::vector<ColorItem*>::iterator it = curr->_colors.begin(); it != curr->_colors.end(); it++ ) {
 543                     _holder->addPreview(*it);
 544                 }
 545                 _holder->thawUpdates();
 546             }
 547         }
 548         break;
 549     }
 550 }
 551
 552 } //namespace Dialogs
 553 } //namespace UI
 554 } //namespace Inkscape
 555
 556
 557 /*
 558   Local Variables:
 559   mode:c++
 560   c-file-style:"stroustrup"
 561   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 562   indent-tabs-mode:nil
 563   fill-column:99
 564   End:
 565 */
 566 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :