Shamusworld >> Repos - architektonas/blob - src/base/rs_preview.cpp

   1 // preview.cpp
   2 //
   3 // Originally part of QCad Community Edition by Andrew Mustun
   4 // Extensively rewritten and refactored by James L. Hammons
   5 // (C) 2010 Underground Software
   6 //
   7 // JLH = James L. Hammons <jlhamm@acm.org>
   8 //
   9 // Who  When        What
  10 // ---  ----------  -----------------------------------------------------------
  11 // JLH  05/21/2010  Added this text. :-)
  12 //
  13
  14 #include "rs_preview.h"
  15
  16 #include "rs_entitycontainer.h"
  17 #include "rs_graphicview.h"
  18 #include "rs_information.h"
  19 #include "settings.h"
  20
  21 /**
  22  * Constructor.
  23  */
  24 RS_Preview::RS_Preview(RS_EntityContainer * parent): RS_EntityContainer(parent)
  25 {
  26         settings.beginGroup("Appearance");
  27         maxEntities = settings.value("MaxPreview", 100).toInt();
  28         settings.endGroup();
  29 }
  30
  31 /**
  32  * Destructor.
  33  */
  34 RS_Preview::~RS_Preview()
  35 {
  36 }
  37
  38 /**
  39  * Adds an entity to this preview and removes any attributes / layer
  40  * connectsions before that.
  41  */
  42 void RS_Preview::addEntity(RS_Entity * entity)
  43 {
  44         if (entity == NULL || entity->isUndone())
  45                 return;
  46
  47         // only border preview for complex entities:
  48         //if ((entity->count() > maxEntities-count()) &&
  49
  50         bool addBorder = false;
  51
  52         if (entity->rtti() == RS2::EntityImage || entity->rtti() == RS2::EntityHatch
  53                 || entity->rtti() == RS2::EntityInsert)
  54         {
  55                 addBorder = true;
  56         }
  57         else
  58         {
  59                 if (entity->isContainer() && entity->rtti() != RS2::EntitySpline)
  60                 {
  61                         if (entity->countDeep() > maxEntities-countDeep())
  62                                 addBorder = true;
  63                 }
  64         }
  65
  66         if (addBorder)
  67         {
  68                 Vector min = entity->getMin();
  69                 Vector max = entity->getMax();
  70
  71                 RS_Line * l1 = new RS_Line(this, RS_LineData(Vector(min.x, min.y), Vector(max.x, min.y)));
  72                 RS_Line * l2 = new RS_Line(this, RS_LineData(Vector(max.x, min.y), Vector(max.x, max.y)));
  73                 RS_Line * l3 = new RS_Line(this, RS_LineData(Vector(max.x, max.y), Vector(min.x, max.y)));
  74                 RS_Line * l4 = new RS_Line(this, RS_LineData(Vector(min.x, max.y), Vector(min.x, min.y)));
  75
  76                 RS_EntityContainer::addEntity(l1);
  77                 RS_EntityContainer::addEntity(l2);
  78                 RS_EntityContainer::addEntity(l3);
  79                 RS_EntityContainer::addEntity(l4);
  80
  81                 delete entity;
  82                 entity = NULL;
  83         }
  84         else
  85         {
  86                 entity->setLayer(NULL);
  87                 entity->setSelected(false);
  88                 entity->reparent(this);
  89                 entity->setPen(RS_Pen(RS_Color(255, 255, 255), RS2::Width00, RS2::SolidLine));
  90                 RS_EntityContainer::addEntity(entity);
  91         }
  92 }
  93
  94 /**
  95 * Clones the given entity and adds the clone to the preview.
  96 */
  97 void RS_Preview::addCloneOf(RS_Entity* entity)
  98 {
  99         if (entity == NULL)
 100                 return;
 101
 102         RS_Entity * clone = entity->clone();
 103         addEntity(clone);
 104 }
 105
 106 /**
 107 * Adds all entities from 'container' to the preview (unselected).
 108 */
 109 void RS_Preview::addAllFrom(RS_EntityContainer & container)
 110 {
 111         int c = 0;
 112
 113         for(RS_Entity * e=container.firstEntity(); e!=NULL; e=container.nextEntity())
 114         {
 115                 if (c < maxEntities)
 116                 {
 117                         RS_Entity * clone = e->clone();
 118                         clone->setSelected(false);
 119                         clone->reparent(this);
 120
 121                         c += clone->countDeep();
 122                         addEntity(clone);
 123                         // clone might be NULL after this point
 124                 }
 125         }
 126 }
 127
 128 /**
 129 * Adds all selected entities from 'container' to the preview (unselected).
 130 */
 131 void RS_Preview::addSelectionFrom(RS_EntityContainer & container)
 132 {
 133         int c = 0;
 134
 135         for(RS_Entity * e=container.firstEntity(); e!=NULL; e=container.nextEntity())
 136         {
 137                 if (e->isSelected() && c < maxEntities)
 138                 {
 139                         RS_Entity * clone = e->clone();
 140                         clone->setSelected(false);
 141                         clone->reparent(this);
 142
 143                         c += clone->countDeep();
 144                         addEntity(clone);
 145                         // clone might be NULL after this point
 146                 }
 147         }
 148 }
 149
 150 /**
 151 * Adds all entities in the given range and those which have endpoints
 152 * in the given range to the preview.
 153 */
 154 void RS_Preview::addStretchablesFrom(RS_EntityContainer & container, const Vector & v1,
 155         const Vector & v2)
 156 {
 157         int c = 0;
 158
 159         for(RS_Entity * e=container.firstEntity(); e!=NULL; e=container.nextEntity())
 160         {
 161                 if (e->isVisible() && e->rtti() != RS2::EntityHatch && (e->isInWindow(v1, v2)
 162                         || e->hasEndpointsWithinWindow(v1, v2)) && c < maxEntities)
 163                 {
 164                         RS_Entity * clone = e->clone();
 165                         //clone->setSelected(false);
 166                         clone->reparent(this);
 167
 168                         c += clone->countDeep();
 169                         addEntity(clone);
 170                         // clone might be NULL after this point
 171                 }
 172         }
 173 }