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         guchar tmp[8];
 105         tmp[0] = item->_r;
 106         tmp[1] = item->_r;
 107         tmp[2] = item->_g;
 108         tmp[3] = item->_g;
 109         tmp[4] = item->_b;
 110         tmp[5] = item->_b;
 111         tmp[6] = 0x0ff;
 112         tmp[7] = 0x0ff;
 113         gtk_selection_data_set( data,
 114                                 typeXColor,
 115                                 8, // format
 116                                 tmp,
 117                                 (3+1) * 2);
 118     }
 119 }
 120
 121 //"drag-drop"
 122 gboolean dragDropColorData( GtkWidget *widget,
 123                             GdkDragContext *drag_context,
 124                             gint x,
 125                             gint y,
 126                             guint time,
 127                             gpointer user_data)
 128 {
 129 // TODO finish
 130     return TRUE;
 131 }
 132
 133 static void bouncy( GtkWidget* widget, gpointer callback_data ) {
 134     ColorItem* item = reinterpret_cast<ColorItem*>(callback_data);
 135     if ( item ) {
 136         item->buttonClicked(false);
 137     }
 138 }
 139
 140 static void bouncy2( GtkWidget* widget, gint arg1, gpointer callback_data ) {
 141     ColorItem* item = reinterpret_cast<ColorItem*>(callback_data);
 142     if ( item ) {
 143         item->buttonClicked(true);
 144     }
 145 }
 146
 147 Gtk::Widget* ColorItem::getPreview(PreviewStyle style, ViewType view, Gtk::BuiltinIconSize size)
 148 {
 149     Gtk::Widget* widget = 0;
 150     if ( style == PREVIEW_STYLE_BLURB ) {
 151         Gtk::Label *lbl = new Gtk::Label(_name);
 152         lbl->set_alignment(Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER);
 153         widget = lbl;
 154     } else {
 155         Glib::ustring blank("          ");
 156         if ( size == Gtk::ICON_SIZE_MENU ) {
 157             blank = " ";
 158         }
 159
 160         GtkWidget* eekWidget = eek_preview_new();
 161         EekPreview * preview = EEK_PREVIEW(eekWidget);
 162         Gtk::Widget* newBlot = Glib::wrap(eekWidget);
 163
 164         eek_preview_set_color( preview, (_r << 8)|_r, (_g << 8)|_g, (_b << 8)|_b);
 165
 166         eek_preview_set_details( preview, (::PreviewStyle)style, (::ViewType)view, (::GtkIconSize)size );
 167
 168         GValue val = {0, {{0}, {0}}};
 169         g_value_init( &val, G_TYPE_BOOLEAN );
 170         g_value_set_boolean( &val, FALSE );
 171         g_object_set_property( G_OBJECT(preview), "focus-on-click", &val );
 172
 173 /*
 174         Gtk::Button *btn = new Gtk::Button(blank);
 175         Gdk::Color color;
 176         color.set_rgb((_r << 8)|_r, (_g << 8)|_g, (_b << 8)|_b);
 177         btn->modify_bg(Gtk::STATE_NORMAL, color);
 178         btn->modify_bg(Gtk::STATE_ACTIVE, color);
 179         btn->modify_bg(Gtk::STATE_PRELIGHT, color);
 180         btn->modify_bg(Gtk::STATE_SELECTED, color);
 181
 182         Gtk::Widget* newBlot = btn;
 183 */
 184
 185         tips.set_tip((*newBlot), _name);
 186
 187 /*
 188         newBlot->signal_clicked().connect( sigc::mem_fun(*this, &ColorItem::buttonClicked) );
 189
 190         sigc::signal<void> type_signal_something;
 191 */
 192         g_signal_connect( G_OBJECT(newBlot->gobj()),
 193                           "clicked",
 194                           G_CALLBACK(bouncy),
 195                           this);
 196
 197         g_signal_connect( G_OBJECT(newBlot->gobj()),
 198                           "alt-clicked",
 199                           G_CALLBACK(bouncy2),
 200                           this);
 201
 202         gtk_drag_source_set( GTK_WIDGET(newBlot->gobj()),
 203                              GDK_BUTTON1_MASK,
 204                              color_entries,
 205                              G_N_ELEMENTS(color_entries),
 206                              GdkDragAction(GDK_ACTION_MOVE | GDK_ACTION_COPY) );
 207
 208         g_signal_connect( G_OBJECT(newBlot->gobj()),
 209                           "drag-data-get",
 210                           G_CALLBACK(dragGetColorData),
 211                           this);
 212
 213         g_signal_connect( G_OBJECT(newBlot->gobj()),
 214                           "drag-drop",
 215                           G_CALLBACK(dragDropColorData),
 216                           this);
 217
 218         widget = newBlot;
 219     }
 220
 221     return widget;
 222 }
 223
 224 void ColorItem::buttonClicked(bool secondary)
 225 {
 226     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 227     if (desktop) {
 228         char const * attrName = secondary ? "stroke" : "fill";
 229         guint32 rgba = (_r << 24) | (_g << 16) | (_b << 8) | 0xff;
 230         gchar c[64];
 231         sp_svg_write_color(c, 64, rgba);
 232
 233         SPCSSAttr *css = sp_repr_css_attr_new();
 234         sp_repr_css_set_property( css, attrName, c );
 235         sp_desktop_set_style(desktop, css);
 236
 237         sp_repr_css_attr_unref(css);
 238         sp_document_done (SP_DT_DOCUMENT (desktop));
 239     }
 240 }
 241
 242
 243
 244
 245 static char* trim( char* str ) {
 246     char* ret = str;
 247     while ( *str && (*str == ' ' || *str == '\t') ) {
 248         str++;
 249     }
 250     ret = str;
 251     while ( *str ) {
 252         str++;
 253     }
 254     str--;
 255     while ( str > ret && ( *str == ' ' || *str == '\t' ) || *str == '\r' || *str == '\n' ) {
 256         *str-- = 0;
 257     }
 258     return ret;
 259 }
 260
 261 void skipWhitespace( char*& str ) {
 262     while ( *str == ' ' || *str == '\t' ) {
 263         str++;
 264     }
 265 }
 266
 267 bool parseNum( char*& str, int& val ) {
 268     val = 0;
 269     while ( '0' <= *str && *str <= '9' ) {
 270         val = val * 10 + (*str - '0');
 271         str++;
 272     }
 273     bool retval = !(*str == 0 || *str == ' ' || *str == '\t' || *str == '\r' || *str == '\n');
 274     return retval;
 275 }
 276
 277
 278 class JustForNow
 279 {
 280 public:
 281     JustForNow() : _prefWidth(0) {}
 282
 283     Glib::ustring _name;
 284     int _prefWidth;
 285     std::vector<ColorItem*> _colors;
 286 };
 287
 288 static std::vector<JustForNow*> possible;
 289
 290 static void loadPaletteFile( gchar const *filename )
 291 {
 292     char block[1024];
 293     FILE *f = Inkscape::IO::fopen_utf8name( filename, "r" );
 294     if ( f ) {
 295         char* result = fgets( block, sizeof(block), f );
 296         if ( result ) {
 297             if ( strncmp( "GIMP Palette", block, 12 ) == 0 ) {
 298                 bool inHeader = true;
 299                 bool hasErr = false;
 300
 301                 JustForNow *onceMore = new JustForNow();
 302
 303                 do {
 304                     result = fgets( block, sizeof(block), f );
 305                     block[sizeof(block) - 1] = 0;
 306                     if ( result ) {
 307                         if ( block[0] == '#' ) {
 308                             // ignore comment
 309                         } else {
 310                             char *ptr = block;
 311                             // very simple check for header versus entry
 312                             while ( *ptr == ' ' || *ptr == '\t' ) {
 313                                 ptr++;
 314                             }
 315                             if ( *ptr == 0 ) {
 316                                 // blank line. skip it.
 317                             } else if ( '0' <= *ptr && *ptr <= '9' ) {
 318                                 // should be an entry link
 319                                 inHeader = false;
 320                                 ptr = block;
 321                                 Glib::ustring name("");
 322                                 int r = 0;
 323                                 int g = 0;
 324                                 int b = 0;
 325                                 skipWhitespace(ptr);
 326                                 if ( *ptr ) {
 327                                     hasErr = parseNum(ptr, r);
 328                                     if ( !hasErr ) {
 329                                         skipWhitespace(ptr);
 330                                         hasErr = parseNum(ptr, g);
 331                                     }
 332                                     if ( !hasErr ) {
 333                                         skipWhitespace(ptr);
 334                                         hasErr = parseNum(ptr, b);
 335                                     }
 336                                     if ( !hasErr && *ptr ) {
 337                                         char* n = trim(ptr);
 338                                         if (n != NULL) {
 339                                             name = n;
 340                                         }
 341                                     }
 342                                     if ( !hasErr ) {
 343                                         // Add the entry now
 344                                         Glib::ustring nameStr(name);
 345                                         ColorItem* item = new ColorItem( r, g, b, nameStr );
 346                                         onceMore->_colors.push_back(item);
 347                                     }
 348                                 } else {
 349                                     hasErr = true;
 350                                 }
 351                             } else {
 352                                 if ( !inHeader ) {
 353                                     // Hmmm... probably bad. Not quite the format we want?
 354                                     hasErr = true;
 355                                 } else {
 356                                     char* sep = strchr(result, ':');
 357                                     if ( sep ) {
 358                                         *sep = 0;
 359                                         char* val = trim(sep + 1);
 360                                         char* name = trim(result);
 361                                         if ( *name ) {
 362                                             if ( strcmp( "Name", name ) == 0 )
 363                                             {
 364                                                 onceMore->_name = val;
 365                                             }
 366                                             else if ( strcmp( "Columns", name ) == 0 )
 367                                             {
 368                                                 gchar* endPtr = 0;
 369                                                 guint64 numVal = g_ascii_strtoull( val, &endPtr, 10 );
 370                                                 if ( (numVal == G_MAXUINT64) && (ERANGE == errno) ) {
 371                                                     // overflow
 372                                                 } else if ( (numVal == 0) && (endPtr == val) ) {
 373                                                     // failed conversion
 374                                                 } else {
 375                                                     onceMore->_prefWidth = numVal;
 376                                                 }
 377                                             }
 378                                         } else {
 379                                             // error
 380                                             hasErr = true;
 381                                         }
 382                                     } else {
 383                                         // error
 384                                         hasErr = true;
 385                                     }
 386                                 }
 387                             }
 388                         }
 389                     }
 390                 } while ( result && !hasErr );
 391                 if ( !hasErr ) {
 392                     possible.push_back(onceMore);
 393                 } else {
 394                     delete onceMore;
 395                 }
 396             }
 397         }
 398
 399         fclose(f);
 400     }
 401 }
 402
 403 static void loadEmUp()
 404 {
 405     static bool beenHere = false;
 406     if ( !beenHere ) {
 407         beenHere = true;
 408
 409         std::list<gchar *> sources;
 410         sources.push_back( profile_path("palettes") );
 411         sources.push_back( g_strdup(INKSCAPE_PALETTESDIR) );
 412
 413         // Use this loop to iterate through a list of possible document locations.
 414         while (!sources.empty()) {
 415             gchar *dirname = sources.front();
 416
 417             if ( Inkscape::IO::file_test( dirname, (GFileTest)(G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR) ) ) {
 418                 GError *err = 0;
 419                 GDir *directory = g_dir_open(dirname, 0, &err);
 420                 if (!directory) {
 421                     gchar *safeDir = Inkscape::IO::sanitizeString(dirname);
 422                     g_warning(_("Palettes directory (%s) is unavailable."), safeDir);
 423                     g_free(safeDir);
 424                 } else {
 425                     gchar *filename = 0;
 426                     while ((filename = (gchar *)g_dir_read_name(directory)) != NULL) {
 427                         gchar* full = g_build_filename(dirname, filename, NULL);
 428                         if ( !Inkscape::IO::file_test( full, (GFileTest)(G_FILE_TEST_IS_DIR ) ) ) {
 429                             loadPaletteFile(full);
 430                         }
 431                         g_free(full);
 432                     }
 433                     g_dir_close(directory);
 434                 }
 435             }
 436
 437             // toss the dirname
 438             g_free(dirname);
 439             sources.pop_front();
 440         }
 441     }
 442 }
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452 SwatchesPanel& SwatchesPanel::getInstance()
 453 {
 454     if ( !instance ) {
 455         instance = new SwatchesPanel();
 456     }
 457
 458     return *instance;
 459 }
 460
 461
 462
 463 /**
 464  * Constructor
 465  */
 466 SwatchesPanel::SwatchesPanel() :
 467     Inkscape::UI::Widget::Panel ("dialogs.swatches"),
 468     _holder(0)
 469 {
 470     _holder = new PreviewHolder();
 471     loadEmUp();
 472
 473     if ( !possible.empty() ) {
 474         JustForNow* first = possible.front();
 475         if ( first->_prefWidth > 0 ) {
 476             _holder->setColumnPref( first->_prefWidth );
 477         }
 478         _holder->freezeUpdates();
 479         for ( std::vector<ColorItem*>::iterator it = first->_colors.begin(); it != first->_colors.end(); it++ ) {
 480             _holder->addPreview(*it);
 481         }
 482         _holder->thawUpdates();
 483
 484         Gtk::RadioMenuItem::Group groupOne;
 485         int i = 0;
 486         for ( std::vector<JustForNow*>::iterator it = possible.begin(); it != possible.end(); it++ ) {
 487             JustForNow* curr = *it;
 488             Gtk::RadioMenuItem* single = manage(new Gtk::RadioMenuItem(groupOne, curr->_name));
 489             _regItem( single, 3, i );
 490             i++;
 491         }
 492
 493     }
 494
 495
 496     _getContents()->pack_start(*_holder, Gtk::PACK_EXPAND_WIDGET);
 497     _setTargetFillable(_holder);
 498
 499     show_all_children();
 500
 501     restorePanelPrefs();
 502 }
 503
 504 SwatchesPanel::~SwatchesPanel()
 505 {
 506 }
 507
 508 void SwatchesPanel::setOrientation( Gtk::AnchorType how )
 509 {
 510     // Must call the parent class or bad things might happen
 511     Inkscape::UI::Widget::Panel::setOrientation( how );
 512
 513     if ( _holder )
 514     {
 515         _holder->setOrientation( Gtk::ANCHOR_SOUTH );
 516     }
 517 }
 518
 519 void SwatchesPanel::_handleAction( int setId, int itemId )
 520 {
 521     switch( setId ) {
 522         case 3:
 523         {
 524             if ( itemId >= 0 && itemId < static_cast<int>(possible.size()) ) {
 525                 _holder->clear();
 526                 JustForNow* curr = possible[itemId];
 527                 if ( curr->_prefWidth > 0 ) {
 528                     _holder->setColumnPref( curr->_prefWidth );
 529                 }
 530                 _holder->freezeUpdates();
 531                 for ( std::vector<ColorItem*>::iterator it = curr->_colors.begin(); it != curr->_colors.end(); it++ ) {
 532                     _holder->addPreview(*it);
 533                 }
 534                 _holder->thawUpdates();
 535             }
 536         }
 537         break;
 538     }
 539 }
 540
 541 } //namespace Dialogs
 542 } //namespace UI
 543 } //namespace Inkscape
 544
 545
 546 /*
 547   Local Variables:
 548   mode:c++
 549   c-file-style:"stroustrup"
 550   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 551   indent-tabs-mode:nil
 552   fill-column:99
 553   End:
 554 */
 555 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :