src/lpe-tool-context.cpp

   1 /*
   2  * LPEToolContext: a context for a generic tool composed of subtools that are given by LPEs
   3  *
   4  * Authors:
   5  *   Maximilian Albert <maximilian.albert@gmail.com>
   6  *   Lauris Kaplinski <lauris@kaplinski.com>
   7  *
   8  * Copyright (C) 1998 The Free Software Foundation
   9  * Copyright (C) 1999-2005 authors
  10  * Copyright (C) 2001-2002 Ximian, Inc.
  11  * Copyright (C) 2008 Maximilian Albert
  12  *
  13  * Released under GNU GPL, read the file 'COPYING' for more information
  14  */
  15
  16 #include "config.h"
  17
  18 #include "forward.h"
  19 #include "pixmaps/cursor-pencil.xpm"
  20 #include <gtk/gtk.h>
  21 #include "desktop.h"
  22 #include "message-context.h"
  23 #include "prefs-utils.h"
  24
  25 /**
  26
  27 #include <gdk/gdkkeysyms.h>
  28 #include <glibmm/i18n.h>
  29 #include <string>
  30 #include <cstring>
  31 #include <numeric>
  32
  33 #include "svg/svg.h"
  34 #include "display/canvas-bpath.h"
  35 #include "display/bezier-utils.h"
  36
  37 #include <glib/gmem.h>
  38 #include "macros.h"
  39 #include "document.h"
  40 #include "selection.h"
  41 #include "desktop-events.h"
  42 #include "desktop-handles.h"
  43 #include "desktop-affine.h"
  44 #include "desktop-style.h"
  45 #include "xml/repr.h"
  46 #include "context-fns.h"
  47 #include "sp-item.h"
  48 #include "inkscape.h"
  49 #include "color.h"
  50 #include "rubberband.h"
  51 #include "splivarot.h"
  52 #include "sp-item-group.h"
  53 #include "sp-shape.h"
  54 #include "sp-path.h"
  55 #include "sp-text.h"
  56 #include "display/canvas-bpath.h"
  57 #include "display/canvas-arena.h"
  58 #include "livarot/Shape.h"
  59 #include <2geom/isnan.h>
  60 #include <2geom/pathvector.h>
  61 **/
  62
  63 #include "lpe-tool-context.h"
  64
  65 static void sp_lpetool_context_class_init(SPLPEToolContextClass *klass);
  66 static void sp_lpetool_context_init(SPLPEToolContext *erc);
  67 static void sp_lpetool_context_dispose(GObject *object);
  68
  69 static void sp_lpetool_context_setup(SPEventContext *ec);
  70 static void sp_lpetool_context_set(SPEventContext *ec, gchar const *key, gchar const *val);
  71 static gint sp_lpetool_context_root_handler(SPEventContext *ec, GdkEvent *event);
  72
  73
  74 static SPEventContextClass *lpetool_parent_class = 0;
  75
  76 GType sp_lpetool_context_get_type(void)
  77 {
  78     static GType type = 0;
  79     if (!type) {
  80         GTypeInfo info = {
  81             sizeof(SPLPEToolContextClass),
  82             0, // base_init
  83             0, // base_finalize
  84             (GClassInitFunc)sp_lpetool_context_class_init,
  85             0, // class_finalize
  86             0, // class_data
  87             sizeof(SPLPEToolContext),
  88             0, // n_preallocs
  89             (GInstanceInitFunc)sp_lpetool_context_init,
  90             0 // value_table
  91         };
  92         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPLPEToolContext", &info, static_cast<GTypeFlags>(0));
  93     }
  94     return type;
  95 }
  96
  97 static void
  98 sp_lpetool_context_class_init(SPLPEToolContextClass *klass)
  99 {
 100     GObjectClass *object_class = (GObjectClass *) klass;
 101     SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
 102
 103     lpetool_parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
 104
 105     object_class->dispose = sp_lpetool_context_dispose;
 106
 107     event_context_class->setup = sp_lpetool_context_setup;
 108     event_context_class->set = sp_lpetool_context_set;
 109     event_context_class->root_handler = sp_lpetool_context_root_handler;
 110 }
 111
 112 static void
 113 sp_lpetool_context_init(SPLPEToolContext *erc)
 114 {
 115     erc->cursor_shape = cursor_pencil_xpm;
 116     erc->hot_x = 4;
 117     erc->hot_y = 4;
 118 }
 119
 120 static void
 121 sp_lpetool_context_dispose(GObject *object)
 122 {
 123     //SPLPEToolContext *erc = SP_LPETOOL_CONTEXT(object);
 124
 125     G_OBJECT_CLASS(lpetool_parent_class)->dispose(object);
 126 }
 127
 128 static void
 129 sp_lpetool_context_setup(SPEventContext *ec)
 130 {
 131     SPLPEToolContext *erc = SP_LPETOOL_CONTEXT(ec);
 132
 133     if (((SPEventContextClass *) lpetool_parent_class)->setup)
 134         ((SPEventContextClass *) lpetool_parent_class)->setup(ec);
 135
 136     erc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
 137
 138     if (prefs_get_int_attribute("tools.lpetool", "selcue", 0) != 0) {
 139         ec->enableSelectionCue();
 140     }
 141 // TODO temp force:
 142     ec->enableSelectionCue();
 143 }
 144
 145 static void
 146 sp_lpetool_context_set(SPEventContext *ec, gchar const *key, gchar const *val)
 147 {
 148     //pass on up to parent class to handle common attributes.
 149     if ( lpetool_parent_class->set ) {
 150         lpetool_parent_class->set(ec, key, val);
 151     }
 152 }
 153
 154 /**
 155 void
 156 sp_erc_update_toolbox (SPDesktop *desktop, const gchar *id, double value)
 157 {
 158     desktop->setToolboxAdjustmentValue (id, value);
 159 }
 160 **/
 161
 162 gint
 163 sp_lpetool_context_root_handler(SPEventContext *event_context,
 164                                   GdkEvent *event)
 165 {
 166     //SPLPEToolContext *dc = SP_LPETOOL_CONTEXT(event_context);
 167     //SPDesktop *desktop = event_context->desktop;
 168
 169     gint ret = FALSE;
 170
 171     /**
 172     switch (event->type) {
 173         case GDK_BUTTON_PRESS:
 174             if (event->button.button == 1 && !event_context->space_panning) {
 175
 176                 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(dc);
 177
 178                 if (Inkscape::have_viable_layer(desktop, dc->_message_context) == false) {
 179                     return TRUE;
 180                 }
 181
 182                 NR::Point const button_w(event->button.x,
 183                                          event->button.y);
 184                 NR::Point const button_dt(desktop->w2d(button_w));
 185                 sp_lpetool_reset(dc, button_dt);
 186                 sp_lpetool_extinput(dc, event);
 187                 sp_lpetool_apply(dc, button_dt);
 188                 dc->accumulated->reset();
 189                 if (dc->repr) {
 190                     dc->repr = NULL;
 191                 }
 192
 193                 Inkscape::Rubberband::get()->start(desktop, button_dt);
 194                 Inkscape::Rubberband::get()->setMode(RUBBERBAND_MODE_TOUCHPATH);
 195
 196                 // initialize first point
 197                 dc->npoints = 0;
 198
 199                 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
 200                                     ( GDK_KEY_PRESS_MASK |
 201                                       GDK_BUTTON_RELEASE_MASK |
 202                                       GDK_POINTER_MOTION_MASK |
 203                                       GDK_BUTTON_PRESS_MASK ),
 204                                     NULL,
 205                                     event->button.time);
 206
 207                 ret = TRUE;
 208
 209                 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 3);
 210                 dc->is_drawing = true;
 211             }
 212             break;
 213         case GDK_MOTION_NOTIFY:
 214         {
 215             NR::Point const motion_w(event->motion.x,
 216                                      event->motion.y);
 217             NR::Point motion_dt(desktop->w2d(motion_w));
 218             sp_lpetool_extinput(dc, event);
 219
 220             dc->_message_context->clear();
 221
 222             if ( dc->is_drawing && (event->motion.state & GDK_BUTTON1_MASK) && !event_context->space_panning) {
 223                 dc->dragging = TRUE;
 224
 225                 dc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Drawing</b> an lpetool stroke"));
 226
 227                 if (!sp_lpetool_apply(dc, motion_dt)) {
 228                     ret = TRUE;
 229                     break;
 230                 }
 231
 232                 if ( dc->cur != dc->last ) {
 233                     sp_lpetool_brush(dc);
 234                     g_assert( dc->npoints > 0 );
 235                     fit_and_split(dc, FALSE);
 236                 }
 237                 ret = TRUE;
 238             }
 239             Inkscape::Rubberband::get()->move(motion_dt);
 240         }
 241         break;
 242
 243
 244     case GDK_BUTTON_RELEASE:
 245     {
 246         NR::Point const motion_w(event->button.x, event->button.y);
 247         NR::Point const motion_dt(desktop->w2d(motion_w));
 248
 249         sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), event->button.time);
 250         sp_canvas_end_forced_full_redraws(desktop->canvas);
 251         dc->is_drawing = false;
 252
 253         if (dc->dragging && event->button.button == 1 && !event_context->space_panning) {
 254             dc->dragging = FALSE;
 255
 256             NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();
 257
 258             sp_lpetool_apply(dc, motion_dt);
 259
 260             // Remove all temporary line segments
 261             while (dc->segments) {
 262                 gtk_object_destroy(GTK_OBJECT(dc->segments->data));
 263                 dc->segments = g_slist_remove(dc->segments, dc->segments->data);
 264             }
 265
 266             // Create object
 267             fit_and_split(dc, TRUE);
 268             accumulate_lpetool(dc);
 269             set_to_accumulated(dc); // performs document_done
 270
 271             // reset accumulated curve
 272             dc->accumulated->reset();
 273
 274             clear_current(dc);
 275             if (dc->repr) {
 276                 dc->repr = NULL;
 277             }
 278
 279             Inkscape::Rubberband::get()->stop();
 280             dc->_message_context->clear();
 281             ret = TRUE;
 282         }
 283         break;
 284     }
 285
 286     case GDK_KEY_PRESS:
 287         switch (get_group0_keyval (&event->key)) {
 288         case GDK_Up:
 289         case GDK_KP_Up:
 290             if (!MOD__CTRL_ONLY) {
 291                 dc->angle += 5.0;
 292                 if (dc->angle > 90.0)
 293                     dc->angle = 90.0;
 294                 sp_erc_update_toolbox (desktop, "lpetool-angle", dc->angle);
 295                 ret = TRUE;
 296             }
 297             break;
 298         case GDK_Down:
 299         case GDK_KP_Down:
 300             if (!MOD__CTRL_ONLY) {
 301                 dc->angle -= 5.0;
 302                 if (dc->angle < -90.0)
 303                     dc->angle = -90.0;
 304                 sp_erc_update_toolbox (desktop, "lpetool-angle", dc->angle);
 305                 ret = TRUE;
 306             }
 307             break;
 308         case GDK_Right:
 309         case GDK_KP_Right:
 310             if (!MOD__CTRL_ONLY) {
 311                 dc->width += 0.01;
 312                 if (dc->width > 1.0)
 313                     dc->width = 1.0;
 314                 sp_erc_update_toolbox (desktop, "altx-lpetool", dc->width * 100); // the same spinbutton is for alt+x
 315                 ret = TRUE;
 316             }
 317             break;
 318         case GDK_Left:
 319         case GDK_KP_Left:
 320             if (!MOD__CTRL_ONLY) {
 321                 dc->width -= 0.01;
 322                 if (dc->width < 0.01)
 323                     dc->width = 0.01;
 324                 sp_erc_update_toolbox (desktop, "altx-lpetool", dc->width * 100);
 325                 ret = TRUE;
 326             }
 327             break;
 328         case GDK_Home:
 329         case GDK_KP_Home:
 330             dc->width = 0.01;
 331             sp_erc_update_toolbox (desktop, "altx-lpetool", dc->width * 100);
 332             ret = TRUE;
 333             break;
 334         case GDK_End:
 335         case GDK_KP_End:
 336             dc->width = 1.0;
 337             sp_erc_update_toolbox (desktop, "altx-lpetool", dc->width * 100);
 338             ret = TRUE;
 339             break;
 340         case GDK_x:
 341         case GDK_X:
 342             if (MOD__ALT_ONLY) {
 343                 desktop->setToolboxFocusTo ("altx-lpetool");
 344                 ret = TRUE;
 345             }
 346             break;
 347         case GDK_Escape:
 348             Inkscape::Rubberband::get()->stop();
 349             if (dc->is_drawing) {
 350                 // if drawing, cancel, otherwise pass it up for deselecting
 351                 lpetool_cancel (dc);
 352                 ret = TRUE;
 353             }
 354             break;
 355         case GDK_z:
 356         case GDK_Z:
 357             if (MOD__CTRL_ONLY && dc->is_drawing) {
 358                 // if drawing, cancel, otherwise pass it up for undo
 359                 lpetool_cancel (dc);
 360                 ret = TRUE;
 361             }
 362             break;
 363         default:
 364             break;
 365         }
 366         break;
 367
 368     case GDK_KEY_RELEASE:
 369         switch (get_group0_keyval(&event->key)) {
 370             case GDK_Control_L:
 371             case GDK_Control_R:
 372                 dc->_message_context->clear();
 373                 break;
 374             default:
 375                 break;
 376         }
 377
 378     default:
 379         break;
 380     }
 381     **/
 382
 383     if (!ret) {
 384         if (((SPEventContextClass *) lpetool_parent_class)->root_handler) {
 385             ret = ((SPEventContextClass *) lpetool_parent_class)->root_handler(event_context, event);
 386         }
 387     }
 388
 389     return ret;
 390 }
 391
 392 /*
 393   Local Variables:
 394   mode:c++
 395   c-file-style:"stroustrup"
 396   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 397   indent-tabs-mode:nil
 398   fill-column:99
 399   End:
 400 */
 401 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :