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.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     _r(r),
  44     _g(g),
  45     _b(b),
  46     _name(name)
  47 {
  48 }
  49
  50 ColorItem::~ColorItem()
  51 {
  52 }
  53
  54 ColorItem::ColorItem(ColorItem const &other) :
  55     Inkscape::UI::Previewable()
  56 {
  57     if ( this != &other ) {
  58         *this = other;
  59     }
  60 }
  61
  62 ColorItem &ColorItem::operator=(ColorItem const &other)
  63 {
  64     if ( this != &other ) {
  65         _r = other._r;
  66         _g = other._g;
  67         _b = other._b;
  68         _name = other._name;
  69     }
  70     return *this;
  71 }
  72
  73 typedef enum {
  74     XCOLOR_DATA = 0,
  75     TEXT_DATA
  76 } colorFlavorType;
  77
  78 static const GtkTargetEntry color_entries[] = {
  79     {"application/x-color", 0, XCOLOR_DATA},
  80     {"text/plain", 0, TEXT_DATA},
  81 };
  82
  83 static void dragGetColorData( GtkWidget *widget,
  84                               GdkDragContext *drag_context,
  85                               GtkSelectionData *data,
  86                               guint info,
  87                               guint time,
  88                               gpointer user_data)
  89 {
  90     static GdkAtom typeXColor = gdk_atom_intern("application/x-color", FALSE);
  91     static GdkAtom typeText = gdk_atom_intern("text/plain", FALSE);
  92
  93     ColorItem* item = reinterpret_cast<ColorItem*>(user_data);
  94     if ( info == 1 ) {
  95         gchar* tmp = g_strdup_printf("#%02x%02x%02x", item->_r, item->_g, item->_b);
  96
  97         gtk_selection_data_set( data,
  98                                 typeText,
  99                                 8, // format
 100                                 (guchar*)tmp,
 101                                 strlen((const char*)tmp) + 1);
 102         g_free(tmp);
 103         tmp = 0;
 104     } else {
 105         guint16 tmp[4];
 106         tmp[0] = (item->_r << 8) | item->_r;
 107         tmp[1] = (item->_g << 8) | item->_g;
 108         tmp[2] = (item->_b << 8) | item->_b;
 109         tmp[3] = 0xffff;
 110         gtk_selection_data_set( data,
 111                                 typeXColor,
 112                                 16, // format
 113                                 reinterpret_cast<const guchar*>(tmp),
 114                                 (3+1) * 2);
 115     }
 116 }
 117
 118 static void dragBegin( GtkWidget *widget, GdkDragContext* dc, gpointer data )
 119 {
 120     ColorItem* item = reinterpret_cast<ColorItem*>(data);
 121     if ( item )
 122     {
 123         Glib::RefPtr<Gdk::Pixbuf> thumb = Gdk::Pixbuf::create( Gdk::COLORSPACE_RGB, false, 8, 32, 24 );
 124         guint32 fillWith = (0xff000000 & (item->_r << 24))
 125                          | (0x00ff0000 & (item->_g << 16))
 126                          | (0x0000ff00 & (item->_b <<  8));
 127         thumb->fill( fillWith );
 128         gtk_drag_set_icon_pixbuf( dc, thumb->gobj(), 0, 0 );
 129     }
 130
 131 }
 132
 133 //"drag-drop"
 134 gboolean dragDropColorData( GtkWidget *widget,
 135                             GdkDragContext *drag_context,
 136                             gint x,
 137                             gint y,
 138                             guint time,
 139                             gpointer user_data)
 140 {
 141 // TODO finish
 142     return TRUE;
 143 }
 144
 145 static void bouncy( GtkWidget* widget, gpointer callback_data ) {
 146     ColorItem* item = reinterpret_cast<ColorItem*>(callback_data);
 147     if ( item ) {
 148         item->buttonClicked(false);
 149     }
 150 }
 151
 152 static void bouncy2( GtkWidget* widget, gint arg1, gpointer callback_data ) {
 153     ColorItem* item = reinterpret_cast<ColorItem*>(callback_data);
 154     if ( item ) {
 155         item->buttonClicked(true);
 156     }
 157 }
 158
 159 Gtk::Widget* ColorItem::getPreview(PreviewStyle style, ViewType view, Gtk::BuiltinIconSize size)
 160 {
 161     Gtk::Widget* widget = 0;
 162     if ( style == PREVIEW_STYLE_BLURB ) {
 163         Gtk::Label *lbl = new Gtk::Label(_name);
 164         lbl->set_alignment(Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER);
 165         widget = lbl;
 166     } else {
 167         Glib::ustring blank("          ");
 168         if ( size == Gtk::ICON_SIZE_MENU ) {
 169             blank = " ";
 170         }
 171
 172         GtkWidget* eekWidget = eek_preview_new();
 173         EekPreview * preview = EEK_PREVIEW(eekWidget);
 174         Gtk::Widget* newBlot = Glib::wrap(eekWidget);
 175
 176         eek_preview_set_color( preview, (_r << 8)|_r, (_g << 8)|_g, (_b << 8)|_b);
 177
 178         eek_preview_set_details( preview, (::PreviewStyle)style, (::ViewType)view, (::GtkIconSize)size );
 179
 180         GValue val = {0, {{0}, {0}}};
 181         g_value_init( &val, G_TYPE_BOOLEAN );
 182         g_value_set_boolean( &val, FALSE );
 183         g_object_set_property( G_OBJECT(preview), "focus-on-click", &val );
 184
 185 /*
 186         Gtk::Button *btn = new Gtk::Button(blank);
 187         Gdk::Color color;
 188         color.set_rgb((_r << 8)|_r, (_g << 8)|_g, (_b << 8)|_b);
 189         btn->modify_bg(Gtk::STATE_NORMAL, color);
 190         btn->modify_bg(Gtk::STATE_ACTIVE, color);
 191         btn->modify_bg(Gtk::STATE_PRELIGHT, color);
 192         btn->modify_bg(Gtk::STATE_SELECTED, color);
 193
 194         Gtk::Widget* newBlot = btn;
 195 */
 196
 197         tips.set_tip((*newBlot), _name);
 198
 199 /*
 200         newBlot->signal_clicked().connect( sigc::mem_fun(*this, &ColorItem::buttonClicked) );
 201
 202         sigc::signal<void> type_signal_something;
 203 */
 204         g_signal_connect( G_OBJECT(newBlot->gobj()),
 205                           "clicked",
 206                           G_CALLBACK(bouncy),
 207                           this);
 208
 209         g_signal_connect( G_OBJECT(newBlot->gobj()),
 210                           "alt-clicked",
 211                           G_CALLBACK(bouncy2),
 212                           this);
 213
 214         gtk_drag_source_set( GTK_WIDGET(newBlot->gobj()),
 215                              GDK_BUTTON1_MASK,
 216                              color_entries,
 217                              G_N_ELEMENTS(color_entries),
 218                              GdkDragAction(GDK_ACTION_MOVE | GDK_ACTION_COPY) );
 219
 220         g_signal_connect( G_OBJECT(newBlot->gobj()),
 221                           "drag-data-get",
 222                           G_CALLBACK(dragGetColorData),
 223                           this);
 224
 225         g_signal_connect( G_OBJECT(newBlot->gobj()),
 226                           "drag-begin",
 227                           G_CALLBACK(dragBegin),
 228                           this );
 229
 230         g_signal_connect( G_OBJECT(newBlot->gobj()),
 231                           "drag-drop",
 232                           G_CALLBACK(dragDropColorData),
 233                           this);
 234
 235         widget = newBlot;
 236     }
 237
 238     return widget;
 239 }
 240
 241 void ColorItem::buttonClicked(bool secondary)
 242 {
 243     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 244     if (desktop) {
 245         char const * attrName = secondary ? "stroke" : "fill";
 246         guint32 rgba = (_r << 24) | (_g << 16) | (_b << 8) | 0xff;
 247         gchar c[64];
 248         sp_svg_write_color(c, 64, rgba);
 249
 250         SPCSSAttr *css = sp_repr_css_attr_new();
 251         sp_repr_css_set_property( css, attrName, c );
 252         sp_desktop_set_style(desktop, css);
 253
 254         sp_repr_css_attr_unref(css);
 255         sp_document_done (SP_DT_DOCUMENT (desktop));
 256     }
 257 }
 258
 259
 260
 261
 262 static char* trim( char* str ) {
 263     char* ret = str;
 264     while ( *str && (*str == ' ' || *str == '\t') ) {
 265         str++;
 266     }
 267     ret = str;
 268     while ( *str ) {
 269         str++;
 270     }
 271     str--;
 272     while ( str > ret && ( *str == ' ' || *str == '\t' ) || *str == '\r' || *str == '\n' ) {
 273         *str-- = 0;
 274     }
 275     return ret;
 276 }
 277
 278 void skipWhitespace( char*& str ) {
 279     while ( *str == ' ' || *str == '\t' ) {
 280         str++;
 281     }
 282 }
 283
 284 bool parseNum( char*& str, int& val ) {
 285     val = 0;
 286     while ( '0' <= *str && *str <= '9' ) {
 287         val = val * 10 + (*str - '0');
 288         str++;
 289     }
 290     bool retval = !(*str == 0 || *str == ' ' || *str == '\t' || *str == '\r' || *str == '\n');
 291     return retval;
 292 }
 293
 294
 295 class JustForNow
 296 {
 297 public:
 298     JustForNow() : _prefWidth(0) {}
 299
 300     Glib::ustring _name;
 301     int _prefWidth;
 302     std::vector<ColorItem*> _colors;
 303 };
 304
 305 static std::vector<JustForNow*> possible;
 306
 307 static void loadPaletteFile( gchar const *filename )
 308 {
 309     char block[1024];
 310     FILE *f = Inkscape::IO::fopen_utf8name( filename, "r" );
 311     if ( f ) {
 312         char* result = fgets( block, sizeof(block), f );
 313         if ( result ) {
 314             if ( strncmp( "GIMP Palette", block, 12 ) == 0 ) {
 315                 bool inHeader = true;
 316                 bool hasErr = false;
 317
 318                 JustForNow *onceMore = new JustForNow();
 319
 320                 do {
 321                     result = fgets( block, sizeof(block), f );
 322                     block[sizeof(block) - 1] = 0;
 323                     if ( result ) {
 324                         if ( block[0] == '#' ) {
 325                             // ignore comment
 326                         } else {
 327                             char *ptr = block;
 328                             // very simple check for header versus entry
 329                             while ( *ptr == ' ' || *ptr == '\t' ) {
 330                                 ptr++;
 331                             }
 332                             if ( *ptr == 0 ) {
 333                                 // blank line. skip it.
 334                             } else if ( '0' <= *ptr && *ptr <= '9' ) {
 335                                 // should be an entry link
 336                                 inHeader = false;
 337                                 ptr = block;
 338                                 Glib::ustring name("");
 339                                 int r = 0;
 340                                 int g = 0;
 341                                 int b = 0;
 342                                 skipWhitespace(ptr);
 343                                 if ( *ptr ) {
 344                                     hasErr = parseNum(ptr, r);
 345                                     if ( !hasErr ) {
 346                                         skipWhitespace(ptr);
 347                                         hasErr = parseNum(ptr, g);
 348                                     }
 349                                     if ( !hasErr ) {
 350                                         skipWhitespace(ptr);
 351                                         hasErr = parseNum(ptr, b);
 352                                     }
 353                                     if ( !hasErr && *ptr ) {
 354                                         char* n = trim(ptr);
 355                                         if (n != NULL) {
 356                                             name = n;
 357                                         }
 358                                     }
 359                                     if ( !hasErr ) {
 360                                         // Add the entry now
 361                                         Glib::ustring nameStr(name);
 362                                         ColorItem* item = new ColorItem( r, g, b, nameStr );
 363                                         onceMore->_colors.push_back(item);
 364                                     }
 365                                 } else {
 366                                     hasErr = true;
 367                                 }
 368                             } else {
 369                                 if ( !inHeader ) {
 370                                     // Hmmm... probably bad. Not quite the format we want?
 371                                     hasErr = true;
 372                                 } else {
 373                                     char* sep = strchr(result, ':');
 374                                     if ( sep ) {
 375                                         *sep = 0;
 376                                         char* val = trim(sep + 1);
 377                                         char* name = trim(result);
 378                                         if ( *name ) {
 379                                             if ( strcmp( "Name", name ) == 0 )
 380                                             {
 381                                                 onceMore->_name = val;
 382                                             }
 383                                             else if ( strcmp( "Columns", name ) == 0 )
 384                                             {
 385                                                 gchar* endPtr = 0;
 386                                                 guint64 numVal = g_ascii_strtoull( val, &endPtr, 10 );
 387                                                 if ( (numVal == G_MAXUINT64) && (ERANGE == errno) ) {
 388                                                     // overflow
 389                                                 } else if ( (numVal == 0) && (endPtr == val) ) {
 390                                                     // failed conversion
 391                                                 } else {
 392                                                     onceMore->_prefWidth = numVal;
 393                                                 }
 394                                             }
 395                                         } else {
 396                                             // error
 397                                             hasErr = true;
 398                                         }
 399                                     } else {
 400                                         // error
 401                                         hasErr = true;
 402                                     }
 403                                 }
 404                             }
 405                         }
 406                     }
 407                 } while ( result && !hasErr );
 408                 if ( !hasErr ) {
 409                     possible.push_back(onceMore);
 410                 } else {
 411                     delete onceMore;
 412                 }
 413             }
 414         }
 415
 416         fclose(f);
 417     }
 418 }
 419
 420 static void loadEmUp()
 421 {
 422     static bool beenHere = false;
 423     if ( !beenHere ) {
 424         beenHere = true;
 425
 426         std::list<gchar *> sources;
 427         sources.push_back( profile_path("palettes") );
 428         sources.push_back( g_strdup(INKSCAPE_PALETTESDIR) );
 429
 430         // Use this loop to iterate through a list of possible document locations.
 431         while (!sources.empty()) {
 432             gchar *dirname = sources.front();
 433
 434             if ( Inkscape::IO::file_test( dirname, (GFileTest)(G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR) ) ) {
 435                 GError *err = 0;
 436                 GDir *directory = g_dir_open(dirname, 0, &err);
 437                 if (!directory) {
 438                     gchar *safeDir = Inkscape::IO::sanitizeString(dirname);
 439                     g_warning(_("Palettes directory (%s) is unavailable."), safeDir);
 440                     g_free(safeDir);
 441                 } else {
 442                     gchar *filename = 0;
 443                     while ((filename = (gchar *)g_dir_read_name(directory)) != NULL) {
 444                         gchar* full = g_build_filename(dirname, filename, NULL);
 445                         if ( !Inkscape::IO::file_test( full, (GFileTest)(G_FILE_TEST_IS_DIR ) ) ) {
 446                             loadPaletteFile(full);
 447                         }
 448                         g_free(full);
 449                     }
 450                     g_dir_close(directory);
 451                 }
 452             }
 453
 454             // toss the dirname
 455             g_free(dirname);
 456             sources.pop_front();
 457         }
 458     }
 459 }
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469 SwatchesPanel& SwatchesPanel::getInstance()
 470 {
 471     if ( !instance ) {
 472         instance = new SwatchesPanel();
 473     }
 474
 475     return *instance;
 476 }
 477
 478
 479
 480 /**
 481  * Constructor
 482  */
 483 SwatchesPanel::SwatchesPanel() :
 484     Inkscape::UI::Widget::Panel ("dialogs.swatches"),
 485     _holder(0)
 486 {
 487     _holder = new PreviewHolder();
 488     loadEmUp();
 489
 490     if ( !possible.empty() ) {
 491         JustForNow* first = possible.front();
 492         if ( first->_prefWidth > 0 ) {
 493             _holder->setColumnPref( first->_prefWidth );
 494         }
 495         _holder->freezeUpdates();
 496         for ( std::vector<ColorItem*>::iterator it = first->_colors.begin(); it != first->_colors.end(); it++ ) {
 497             _holder->addPreview(*it);
 498         }
 499         _holder->thawUpdates();
 500
 501         Gtk::RadioMenuItem::Group groupOne;
 502         int i = 0;
 503         for ( std::vector<JustForNow*>::iterator it = possible.begin(); it != possible.end(); it++ ) {
 504             JustForNow* curr = *it;
 505             Gtk::RadioMenuItem* single = manage(new Gtk::RadioMenuItem(groupOne, curr->_name));
 506             _regItem( single, 3, i );
 507             i++;
 508         }
 509
 510     }
 511
 512
 513     _getContents()->pack_start(*_holder, Gtk::PACK_EXPAND_WIDGET);
 514     _setTargetFillable(_holder);
 515
 516     show_all_children();
 517
 518     restorePanelPrefs();
 519 }
 520
 521 SwatchesPanel::~SwatchesPanel()
 522 {
 523 }
 524
 525 void SwatchesPanel::setOrientation( Gtk::AnchorType how )
 526 {
 527     // Must call the parent class or bad things might happen
 528     Inkscape::UI::Widget::Panel::setOrientation( how );
 529
 530     if ( _holder )
 531     {
 532         _holder->setOrientation( Gtk::ANCHOR_SOUTH );
 533     }
 534 }
 535
 536 void SwatchesPanel::_handleAction( int setId, int itemId )
 537 {
 538     switch( setId ) {
 539         case 3:
 540         {
 541             if ( itemId >= 0 && itemId < static_cast<int>(possible.size()) ) {
 542                 _holder->clear();
 543                 JustForNow* curr = possible[itemId];
 544                 if ( curr->_prefWidth > 0 ) {
 545                     _holder->setColumnPref( curr->_prefWidth );
 546                 }
 547                 _holder->freezeUpdates();
 548                 for ( std::vector<ColorItem*>::iterator it = curr->_colors.begin(); it != curr->_colors.end(); it++ ) {
 549                     _holder->addPreview(*it);
 550                 }
 551                 _holder->thawUpdates();
 552             }
 553         }
 554         break;
 555     }
 556 }
 557
 558 } //namespace Dialogs
 559 } //namespace UI
 560 } //namespace Inkscape
 561
 562
 563 /*
 564   Local Variables:
 565   mode:c++
 566   c-file-style:"stroustrup"
 567   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 568   indent-tabs-mode:nil
 569   fill-column:99
 570   End:
 571 */
 572 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :