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