src/selcue.cpp

   1 #define __SELCUE_C__
   2
   3 /*
   4  * Helper object for showing selected items
   5  *
   6  * Authors:
   7  *   bulia byak <bulia@users.sf.net>
   8  *   Carl Hetherington <inkscape@carlh.net>
   9  *
  10  * Copyright (C) 2004 Authors
  11  *
  12  * Released under GNU GPL, read the file 'COPYING' for more information
  13  */
  14
  15 #include <string.h>
  16
  17 #include "desktop-handles.h"
  18 #include "selection.h"
  19 #include "display/sp-canvas-util.h"
  20 #include "display/sodipodi-ctrl.h"
  21 #include "display/sodipodi-ctrlrect.h"
  22 #include "libnrtype/Layout-TNG.h"
  23 #include "text-editing.h"
  24 #include "sp-text.h"
  25 #include "sp-flowtext.h"
  26 #include "prefs-utils.h"
  27 #include "selcue.h"
  28
  29 Inkscape::SelCue::SelCue(SPDesktop *desktop)
  30     : _desktop(desktop)
  31 {
  32     _selection = sp_desktop_selection(_desktop);
  33
  34     _sel_changed_connection = _selection->connectChanged(
  35         sigc::hide(sigc::mem_fun(*this, &Inkscape::SelCue::_updateItemBboxes))
  36         );
  37
  38     _sel_modified_connection = _selection->connectModified(
  39         sigc::hide(sigc::hide(sigc::mem_fun(*this, &Inkscape::SelCue::_updateItemBboxes)))
  40         );
  41
  42     _updateItemBboxes();
  43 }
  44
  45 Inkscape::SelCue::~SelCue()
  46 {
  47     _sel_changed_connection.disconnect();
  48     _sel_modified_connection.disconnect();
  49
  50     for (std::list<SPCanvasItem*>::iterator i = _item_bboxes.begin(); i != _item_bboxes.end(); i++) {
  51         gtk_object_destroy(*i);
  52     }
  53     _item_bboxes.clear();
  54
  55     for (std::list<SPCanvasItem*>::iterator i = _text_baselines.begin(); i != _text_baselines.end(); i++) {
  56         gtk_object_destroy(*i);
  57     }
  58     _text_baselines.clear();
  59 }
  60
  61 void Inkscape::SelCue::_updateItemBboxes()
  62 {
  63     for (std::list<SPCanvasItem*>::iterator i = _item_bboxes.begin(); i != _item_bboxes.end(); i++) {
  64         gtk_object_destroy(*i);
  65     }
  66     _item_bboxes.clear();
  67
  68     for (std::list<SPCanvasItem*>::iterator i = _text_baselines.begin(); i != _text_baselines.end(); i++) {
  69         gtk_object_destroy(*i);
  70     }
  71     _text_baselines.clear();
  72
  73     gint mode = prefs_get_int_attribute ("options.selcue", "value", MARK);
  74     if (mode == NONE) {
  75         return;
  76     }
  77
  78     g_return_if_fail(_selection != NULL);
  79
  80     int prefs_bbox = prefs_get_int_attribute("tools", "bounding_box", 0);
  81     SPItem::BBoxType bbox_type = (prefs_bbox ==0)?
  82         SPItem::APPROXIMATE_BBOX : SPItem::GEOMETRIC_BBOX;
  83
  84     for (GSList const *l = _selection->itemList(); l != NULL; l = l->next) {
  85         SPItem *item = (SPItem *) l->data;
  86
  87         boost::optional<NR::Rect> const b = sp_item_bbox_desktop(item, bbox_type);
  88
  89         SPCanvasItem* box = NULL;
  90
  91         if (b) {
  92             if (mode == MARK) {
  93                 box = sp_canvas_item_new(sp_desktop_controls(_desktop),
  94                                          SP_TYPE_CTRL,
  95                                          "mode", SP_CTRL_MODE_XOR,
  96                                          "shape", SP_CTRL_SHAPE_DIAMOND,
  97                                          "size", 5.0,
  98                                          "filled", TRUE,
  99                                          "fill_color", 0x000000ff,
 100                                          "stroked", FALSE,
 101                                          "stroke_color", 0x000000ff,
 102                                          NULL);
 103                 sp_canvas_item_show(box);
 104                 SP_CTRL(box)->moveto(NR::Point(b->min()[NR::X], b->max()[NR::Y]));
 105
 106                 sp_canvas_item_move_to_z(box, 0); // just low enough to not get in the way of other draggable knots
 107
 108             } else if (mode == BBOX) {
 109                 box = sp_canvas_item_new(sp_desktop_controls(_desktop),
 110                                          SP_TYPE_CTRLRECT,
 111                                          NULL);
 112
 113                 SP_CTRLRECT(box)->setRectangle(*b);
 114                 SP_CTRLRECT(box)->setColor(0x000000a0, 0, 0);
 115                 SP_CTRLRECT(box)->setDashed(true);
 116
 117                 sp_canvas_item_move_to_z(box, 0);
 118             }
 119         }
 120
 121         if (box) {
 122             _item_bboxes.push_back(box);
 123         }
 124
 125         SPCanvasItem* baseline_point = NULL;
 126         if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) { // visualize baseline
 127             Inkscape::Text::Layout const *layout = te_get_layout(item);
 128             if (layout != NULL) {
 129                 NR::Point a = layout->characterAnchorPoint(layout->begin()) * from_2geom(sp_item_i2d_affine(item));
 130                 baseline_point = sp_canvas_item_new(sp_desktop_controls(_desktop), SP_TYPE_CTRL,
 131                                                     "mode", SP_CTRL_MODE_XOR,
 132                                                     "size", 4.0,
 133                                                     "filled", 0,
 134                                                     "stroked", 1,
 135                                                     "stroke_color", 0x000000ff,
 136                                                     NULL);
 137
 138                 sp_canvas_item_show(baseline_point);
 139                 SP_CTRL(baseline_point)->moveto(a);
 140                 sp_canvas_item_move_to_z(baseline_point, 0);
 141             }
 142         }
 143
 144         if (baseline_point) {
 145                _text_baselines.push_back(baseline_point);
 146         }
 147     }
 148 }
 149
 150 /*
 151   Local Variables:
 152   mode:c++
 153   c-file-style:"stroustrup"
 154   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 155   indent-tabs-mode:nil
 156   fill-column:99
 157   End:
 158 */
 159 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :