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