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 <gtk/gtkdialog.h> //for GTK_RESPONSE* types
  16 #include <gtk/gtkdnd.h>
  17
  18 #include <glibmm/i18n.h>
  19 #include "inkscape.h"
  20 #include "document.h"
  21 #include "desktop-handles.h"
  22 #include "extension/db.h"
  23 #include "inkscape.h"
  24 #include "svg/svg.h"
  25 #include "desktop-style.h"
  26 #include "io/sys.h"
  27 #include "path-prefix.h"
  28 #include "swatches.h"
  29
  30 #include "eek-preview.h"
  31
  32 namespace Inkscape {
  33 namespace UI {
  34 namespace Dialogs {
  35
  36 SwatchesPanel* SwatchesPanel::instance = 0;
  37
  38
  39 ColorItem::ColorItem( unsigned int r, unsigned int g, unsigned int b, Glib::ustring& name ) :
  40     _r(r),
  41     _g(g),
  42     _b(b),
  43     _name(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         _r = other._r;
  63         _g = other._g;
  64         _b = other._b;
  65         _name = other._name;
  66     }
  67     return *this;
  68 }
  69
  70 typedef enum {
  71     XCOLOR_DATA = 0,
  72     TEXT_DATA
  73 } colorFlavorType;
  74
  75 static const GtkTargetEntry color_entries[] = {
  76     {"application/x-color", 0, XCOLOR_DATA},
  77     {"text/plain", 0, TEXT_DATA},
  78 };
  79
  80 static void dragGetColorData( GtkWidget *widget,
  81                               GdkDragContext *drag_context,
  82                               GtkSelectionData *data,
  83                               guint info,
  84                               guint time,
  85                               gpointer user_data)
  86 {
  87     static GdkAtom typeXColor = gdk_atom_intern("application/x-color", FALSE);
  88     static GdkAtom typeText = gdk_atom_intern("text/plain", FALSE);
  89
  90     ColorItem* item = reinterpret_cast<ColorItem*>(user_data);
  91     if ( info == 1 ) {
  92         gchar* tmp = g_strdup_printf("#%02x%02x%02x", item->_r, item->_g, item->_b);
  93
  94         gtk_selection_data_set( data,
  95                                 typeText,
  96                                 8, // format
  97                                 (guchar*)tmp,
  98                                 strlen((const char*)tmp) + 1);
  99         g_free(tmp);
 100         tmp = 0;
 101     } else {
 102         guchar tmp[8];
 103         tmp[0] = item->_r;
 104         tmp[1] = item->_r;
 105         tmp[2] = item->_g;
 106         tmp[3] = item->_g;
 107         tmp[4] = item->_b;
 108         tmp[5] = item->_b;
 109         tmp[6] = 0x0ff;
 110         tmp[7] = 0x0ff;
 111         gtk_selection_data_set( data,
 112                                 typeXColor,
 113                                 8, // format
 114                                 tmp,
 115                                 (3+1) * 2);
 116     }
 117 }
 118
 119 //"drag-drop"
 120 gboolean dragDropColorData( GtkWidget *widget,
 121                             GdkDragContext *drag_context,
 122                             gint x,
 123                             gint y,
 124                             guint time,
 125                             gpointer user_data)
 126 {
 127 // TODO finish
 128     return TRUE;
 129 }
 130
 131 static void bouncy( GtkWidget* widget, gpointer callback_data ) {
 132     ColorItem* item = reinterpret_cast<ColorItem*>(callback_data);
 133     if ( item ) {
 134         item->buttonClicked(false);
 135     }
 136 }
 137
 138 static void bouncy2( GtkWidget* widget, gint arg1, gpointer callback_data ) {
 139     ColorItem* item = reinterpret_cast<ColorItem*>(callback_data);
 140     if ( item ) {
 141         item->buttonClicked(true);
 142     }
 143 }
 144
 145 Gtk::Widget* ColorItem::getPreview(PreviewStyle style, ViewType view, Gtk::BuiltinIconSize size)
 146 {
 147     Gtk::Widget* widget = 0;
 148     if ( style == PREVIEW_STYLE_BLURB ) {
 149         Gtk::Label *lbl = new Gtk::Label(_name);
 150         lbl->set_alignment(Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER);
 151         widget = lbl;
 152     } else {
 153         Glib::ustring blank("          ");
 154         if ( size == Gtk::ICON_SIZE_MENU ) {
 155             blank = " ";
 156         }
 157
 158         GtkWidget* eekWidget = eek_preview_new();
 159         EekPreview * preview = EEK_PREVIEW(eekWidget);
 160         Gtk::Widget* newBlot = Glib::wrap(eekWidget);
 161
 162         eek_preview_set_color( preview, (_r << 8)|_r, (_g << 8)|_g, (_b << 8)|_b);
 163
 164         eek_preview_set_details( preview, (::PreviewStyle)style, (::ViewType)view, (::GtkIconSize)size );
 165
 166         GValue val = {0, {{0}, {0}}};
 167         g_value_init( &val, G_TYPE_BOOLEAN );
 168         g_value_set_boolean( &val, FALSE );
 169         g_object_set_property( G_OBJECT(preview), "focus-on-click", &val );
 170
 171 /*
 172         Gtk::Button *btn = new Gtk::Button(blank);
 173         Gdk::Color color;
 174         color.set_rgb((_r << 8)|_r, (_g << 8)|_g, (_b << 8)|_b);
 175         btn->modify_bg(Gtk::STATE_NORMAL, color);
 176         btn->modify_bg(Gtk::STATE_ACTIVE, color);
 177         btn->modify_bg(Gtk::STATE_PRELIGHT, color);
 178         btn->modify_bg(Gtk::STATE_SELECTED, color);
 179
 180         Gtk::Widget* newBlot = btn;
 181 */
 182
 183         tips.set_tip((*newBlot), _name);
 184
 185 /*
 186         newBlot->signal_clicked().connect( sigc::mem_fun(*this, &ColorItem::buttonClicked) );
 187
 188         sigc::signal<void> type_signal_something;
 189 */
 190         g_signal_connect( G_OBJECT(newBlot->gobj()),
 191                           "clicked",
 192                           G_CALLBACK(bouncy),
 193                           this);
 194
 195         g_signal_connect( G_OBJECT(newBlot->gobj()),
 196                           "alt-clicked",
 197                           G_CALLBACK(bouncy2),
 198                           this);
 199
 200         gtk_drag_source_set( GTK_WIDGET(newBlot->gobj()),
 201                              GDK_BUTTON1_MASK,
 202                              color_entries,
 203                              G_N_ELEMENTS(color_entries),
 204                              GdkDragAction(GDK_ACTION_MOVE | GDK_ACTION_COPY) );
 205
 206         g_signal_connect( G_OBJECT(newBlot->gobj()),
 207                           "drag-data-get",
 208                           G_CALLBACK(dragGetColorData),
 209                           this);
 210
 211         g_signal_connect( G_OBJECT(newBlot->gobj()),
 212                           "drag-drop",
 213                           G_CALLBACK(dragDropColorData),
 214                           this);
 215
 216         widget = newBlot;
 217     }
 218
 219     return widget;
 220 }
 221
 222 void ColorItem::buttonClicked(bool secondary)
 223 {
 224     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 225     if (desktop) {
 226         char const * attrName = secondary ? "stroke" : "fill";
 227         guint32 rgba = (_r << 24) | (_g << 16) | (_b << 8) | 0xff;
 228         gchar c[64];
 229         sp_svg_write_color(c, 64, rgba);
 230
 231         SPCSSAttr *css = sp_repr_css_attr_new();
 232         sp_repr_css_set_property( css, attrName, c );
 233         sp_desktop_set_style(desktop, css);
 234
 235         sp_repr_css_attr_unref(css);
 236         sp_document_done (SP_DT_DOCUMENT (desktop));
 237     }
 238 }
 239
 240
 241
 242
 243 static char* trim( char* str ) {
 244     char* ret = str;
 245     while ( *str && (*str == ' ' || *str == '\t') ) {
 246         str++;
 247     }
 248     ret = str;
 249     while ( *str ) {
 250         str++;
 251     }
 252     str--;
 253     while ( str > ret && ( *str == ' ' || *str == '\t' ) || *str == '\r' || *str == '\n' ) {
 254         *str-- = 0;
 255     }
 256     return ret;
 257 }
 258
 259 void skipWhitespace( char*& str ) {
 260     while ( *str == ' ' || *str == '\t' ) {
 261         str++;
 262     }
 263 }
 264
 265 bool parseNum( char*& str, int& val ) {
 266     val = 0;
 267     while ( '0' <= *str && *str <= '9' ) {
 268         val = val * 10 + (*str - '0');
 269         str++;
 270     }
 271     bool retval = !(*str == 0 || *str == ' ' || *str == '\t' || *str == '\r' || *str == '\n');
 272     return retval;
 273 }
 274
 275
 276 class JustForNow
 277 {
 278 public:
 279     JustForNow() : _prefWidth(0) {}
 280
 281     Glib::ustring _name;
 282     int _prefWidth;
 283     std::vector<ColorItem*> _colors;
 284 };
 285
 286 static std::vector<JustForNow*> possible;
 287
 288 static void loadPaletteFile( gchar const *filename )
 289 {
 290     char block[1024];
 291     FILE *f = Inkscape::IO::fopen_utf8name( filename, "r" );
 292     if ( f ) {
 293         char* result = fgets( block, sizeof(block), f );
 294         if ( result ) {
 295             if ( strncmp( "GIMP Palette", block, 12 ) == 0 ) {
 296                 bool inHeader = true;
 297                 bool hasErr = false;
 298
 299                 JustForNow *onceMore = new JustForNow();
 300
 301                 do {
 302                     result = fgets( block, sizeof(block), f );
 303                     block[sizeof(block) - 1] = 0;
 304                     if ( result ) {
 305                         if ( block[0] == '#' ) {
 306                             // ignore comment
 307                         } else {
 308                             char *ptr = block;
 309                             // very simple check for header versus entry
 310                             while ( *ptr == ' ' || *ptr == '\t' ) {
 311                                 ptr++;
 312                             }
 313                             if ( *ptr == 0 ) {
 314                                 // blank line. skip it.
 315                             } else if ( '0' <= *ptr && *ptr <= '9' ) {
 316                                 // should be an entry link
 317                                 inHeader = false;
 318                                 ptr = block;
 319                                 Glib::ustring name("");
 320                                 int r = 0;
 321                                 int g = 0;
 322                                 int b = 0;
 323                                 skipWhitespace(ptr);
 324                                 if ( *ptr ) {
 325                                     hasErr = parseNum(ptr, r);
 326                                     if ( !hasErr ) {
 327                                         skipWhitespace(ptr);
 328                                         hasErr = parseNum(ptr, g);
 329                                     }
 330                                     if ( !hasErr ) {
 331                                         skipWhitespace(ptr);
 332                                         hasErr = parseNum(ptr, b);
 333                                     }
 334                                     if ( !hasErr && *ptr ) {
 335                                         char* n = trim(ptr);
 336                                         if (n != NULL) {
 337                                             name = n;
 338                                         }
 339                                     }
 340                                     if ( !hasErr ) {
 341                                         // Add the entry now
 342                                         Glib::ustring nameStr(name);
 343                                         ColorItem* item = new ColorItem( r, g, b, nameStr );
 344                                         onceMore->_colors.push_back(item);
 345                                     }
 346                                 } else {
 347                                     hasErr = true;
 348                                 }
 349                             } else {
 350                                 if ( !inHeader ) {
 351                                     // Hmmm... probably bad. Not quite the format we want?
 352                                     hasErr = true;
 353                                 } else {
 354                                     char* sep = strchr(result, ':');
 355                                     if ( sep ) {
 356                                         *sep = 0;
 357                                         char* val = trim(sep + 1);
 358                                         char* name = trim(result);
 359                                         if ( *name ) {
 360                                             if ( strcmp( "Name", name ) == 0 )
 361                                             {
 362                                                 onceMore->_name = val;
 363                                             }
 364                                             else if ( strcmp( "Columns", name ) == 0 )
 365                                             {
 366                                                 gchar* endPtr = 0;
 367                                                 guint64 numVal = g_ascii_strtoull( val, &endPtr, 10 );
 368                                                 if ( (numVal == G_MAXUINT64) && (ERANGE == errno) ) {
 369                                                     // overflow
 370                                                 } else if ( (numVal == 0) && (endPtr == val) ) {
 371                                                     // failed conversion
 372                                                 } else {
 373                                                     onceMore->_prefWidth = numVal;
 374                                                 }
 375                                             }
 376                                         } else {
 377                                             // error
 378                                             hasErr = true;
 379                                         }
 380                                     } else {
 381                                         // error
 382                                         hasErr = true;
 383                                     }
 384                                 }
 385                             }
 386                         }
 387                     }
 388                 } while ( result && !hasErr );
 389                 if ( !hasErr ) {
 390                     possible.push_back(onceMore);
 391                 } else {
 392                     delete onceMore;
 393                 }
 394             }
 395         }
 396
 397         fclose(f);
 398     }
 399 }
 400
 401 static void loadEmUp()
 402 {
 403     static bool beenHere = false;
 404     if ( !beenHere ) {
 405         beenHere = true;
 406
 407         std::list<gchar *> sources;
 408         sources.push_back( profile_path("palettes") );
 409         sources.push_back( g_strdup(INKSCAPE_PALETTESDIR) );
 410
 411         // Use this loop to iterate through a list of possible document locations.
 412         while (!sources.empty()) {
 413             gchar *dirname = sources.front();
 414
 415             if ( Inkscape::IO::file_test( dirname, (GFileTest)(G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR) ) ) {
 416                 GError *err = 0;
 417                 GDir *directory = g_dir_open(dirname, 0, &err);
 418                 if (!directory) {
 419                     gchar *safeDir = Inkscape::IO::sanitizeString(dirname);
 420                     g_warning(_("Palettes directory (%s) is unavailable."), safeDir);
 421                     g_free(safeDir);
 422                 } else {
 423                     gchar *filename = 0;
 424                     while ((filename = (gchar *)g_dir_read_name(directory)) != NULL) {
 425                         gchar* full = g_build_filename(dirname, filename, NULL);
 426                         if ( !Inkscape::IO::file_test( full, (GFileTest)(G_FILE_TEST_IS_DIR ) ) ) {
 427                             loadPaletteFile(full);
 428                         }
 429                         g_free(full);
 430                     }
 431                     g_dir_close(directory);
 432                 }
 433             }
 434
 435             // toss the dirname
 436             g_free(dirname);
 437             sources.pop_front();
 438         }
 439     }
 440 }
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450 SwatchesPanel& SwatchesPanel::getInstance()
 451 {
 452     if ( !instance ) {
 453         instance = new SwatchesPanel();
 454     }
 455
 456     return *instance;
 457 }
 458
 459
 460
 461 /**
 462  * Constructor
 463  */
 464 SwatchesPanel::SwatchesPanel() :
 465     Inkscape::UI::Widget::Panel ("dialogs.swatches"),
 466     _holder(0)
 467 {
 468     _holder = new PreviewHolder();
 469     loadEmUp();
 470
 471     if ( !possible.empty() ) {
 472         JustForNow* first = possible.front();
 473         if ( first->_prefWidth > 0 ) {
 474             _holder->setColumnPref( first->_prefWidth );
 475         }
 476         for ( std::vector<ColorItem*>::iterator it = first->_colors.begin(); it != first->_colors.end(); it++ ) {
 477             _holder->addPreview(*it);
 478         }
 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                 for ( std::vector<ColorItem*>::iterator it = curr->_colors.begin(); it != curr->_colors.end(); it++ ) {
 527                     _holder->addPreview(*it);
 528                 }
 529             }
 530         }
 531         break;
 532     }
 533 }
 534
 535 } //namespace Dialogs
 536 } //namespace UI
 537 } //namespace Inkscape
 538
 539
 540 /*
 541   Local Variables:
 542   mode:c++
 543   c-file-style:"stroustrup"
 544   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 545   indent-tabs-mode:nil
 546   fill-column:99
 547   End:
 548 */
 549 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :