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         gchar const *prefs_bbox = prefs_get_string_attribute("tools", "bounding_box");
  81     SPItem::BBoxType bbox_type = (prefs_bbox != NULL && strcmp(prefs_bbox, "geometric")==0)? SPItem::GEOMETRIC_BBOX : SPItem::APPROXIMATE_BBOX;
  82
  83     for (GSList const *l = _selection->itemList(); l != NULL; l = l->next) {
  84         SPItem *item = (SPItem *) l->data;
  85
  86         NR::Maybe<NR::Rect> const b = sp_item_bbox_desktop(item, bbox_type);
  87
  88         SPCanvasItem* box = NULL;
  89
  90         if (b) {
  91             if (mode == MARK) {
  92                 box = sp_canvas_item_new(sp_desktop_controls(_desktop),
  93                                          SP_TYPE_CTRL,
  94                                          "mode", SP_CTRL_MODE_XOR,
  95                                          "shape", SP_CTRL_SHAPE_DIAMOND,
  96                                          "size", 5.0,
  97                                          "filled", TRUE,
  98                                          "fill_color", 0x000000ff,
  99                                          "stroked", FALSE,
 100                                          "stroke_color", 0x000000ff,
 101                                          NULL);
 102                 sp_canvas_item_show(box);
 103                 SP_CTRL(box)->moveto(NR::Point(b->min()[NR::X], b->max()[NR::Y]));
 104
 105                 sp_canvas_item_move_to_z(box, 0); // just low enough to not get in the way of other draggable knots
 106
 107             } else if (mode == BBOX) {
 108                 box = sp_canvas_item_new(sp_desktop_controls(_desktop),
 109                                          SP_TYPE_CTRLRECT,
 110                                          NULL);
 111
 112                 SP_CTRLRECT(box)->setRectangle(*b);
 113                 SP_CTRLRECT(box)->setColor(0x000000a0, 0, 0);
 114                 SP_CTRLRECT(box)->setDashed(true);
 115
 116                 sp_canvas_item_move_to_z(box, 0);
 117             }
 118         }
 119
 120         if (box) {
 121             _item_bboxes.push_back(box);
 122         }
 123
 124         SPCanvasItem* baseline_point = NULL;
 125         if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) { // visualize baseline
 126             Inkscape::Text::Layout const *layout = te_get_layout(item);
 127             if (layout != NULL) {
 128                 NR::Point a = layout->characterAnchorPoint(layout->begin()) * sp_item_i2d_affine(item);
 129                 baseline_point = sp_canvas_item_new(sp_desktop_controls(_desktop), SP_TYPE_CTRL,
 130                                                     "mode", SP_CTRL_MODE_XOR,
 131                                                     "size", 4.0,
 132                                                     "filled", 0,
 133                                                     "stroked", 1,
 134                                                     "stroke_color", 0x000000ff,
 135                                                     NULL);
 136
 137                 sp_canvas_item_show(baseline_point);
 138                 SP_CTRL(baseline_point)->moveto(a);
 139                 sp_canvas_item_move_to_z(baseline_point, 0);
 140             }
 141         }
 142
 143         if (baseline_point) {
 144                _text_baselines.push_back(baseline_point);
 145         }
 146     }
 147 }
 148
 149 /*
 150   Local Variables:
 151   mode:c++
 152   c-file-style:"stroustrup"
 153   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 154   indent-tabs-mode:nil
 155   fill-column:99
 156   End:
 157 */
 158 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :