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

   1 // rs_previewactioninterface.cpp
   2 //
   3 // Part of the Architektonas Project
   4 // Originally part of QCad Community Edition by Andrew Mustun
   5 // Extensively rewritten and refactored by James L. Hammons
   6 // (C) 2010 Underground Software
   7 //
   8 // JLH = James L. Hammons <jlhamm@acm.org>
   9 //
  10 // Who  When        What
  11 // ---  ----------  -----------------------------------------------------------
  12 // JLH  06/02/2010  Added this text. :-)
  13 //
  14
  15 #include "rs_previewactioninterface.h"
  16
  17 /**
  18  * Constructor.
  19  *
  20  * Sets the entity container on which the action class inherited
  21  * from this interface operates.
  22  */
  23 RS_PreviewActionInterface::RS_PreviewActionInterface(const char * name,
  24         RS_EntityContainer & container, RS_GraphicView & graphicView):
  25         RS_ActionInterface(name, container, graphicView)
  26 {
  27         RS_DEBUG->print("RS_PreviewActionInterface::RS_PreviewActionInterface: Setting up action with preview: \"%s\"", name);
  28
  29         // preview is linked to the container for getting access to
  30         //   document settings / dictionary variables
  31         preview = new RS_Preview(&container);
  32         visible = false;
  33
  34         RS_DEBUG->print("RS_PreviewActionInterface::RS_PreviewActionInterface: Setting up action with preview: \"%s\": OK", name);
  35 }
  36
  37 /** Destructor */
  38 RS_PreviewActionInterface::~RS_PreviewActionInterface()
  39 {
  40         delete preview;
  41 }
  42
  43 void RS_PreviewActionInterface::init(int status)
  44 {
  45         RS_ActionInterface::init(status);
  46         //deletePreview();
  47         clearPreview();
  48 }
  49
  50 void RS_PreviewActionInterface::finish()
  51 {
  52         RS_ActionInterface::finish();
  53         deletePreview();
  54         clearPreview();
  55 }
  56
  57 void RS_PreviewActionInterface::suspend()
  58 {
  59         RS_ActionInterface::suspend();
  60         deletePreview();
  61         //clearPreview();
  62 }
  63
  64 void RS_PreviewActionInterface::resume()
  65 {
  66         RS_ActionInterface::resume();
  67         drawPreview();
  68 }
  69
  70 void RS_PreviewActionInterface::trigger()
  71 {
  72         RS_ActionInterface::trigger();
  73         deletePreview();
  74         clearPreview();
  75 }
  76
  77 /**
  78  * Clears the preview by removing all entities in it.
  79  */
  80 void RS_PreviewActionInterface::clearPreview()
  81 {
  82         preview->clear();
  83 }
  84
  85 /**
  86  * Draws the preview on the screen.
  87  */
  88 void RS_PreviewActionInterface::drawPreview()
  89 {
  90         if (!visible)
  91                 xorPreview();
  92 }
  93
  94 /**
  95  * Deletes the preview from the screen.
  96  */
  97 void RS_PreviewActionInterface::deletePreview()
  98 {
  99         if (visible)
 100                 xorPreview();
 101 }
 102
 103 //#include "qg_graphicview.h"
 104 /**
 105  * Draws / deletes the current preview.
 106  */
 107 void RS_PreviewActionInterface::xorPreview()
 108 {
 109 #warning "!!! xorPreview() not working AT ALL !!!"
 110 #if 0
 111         if (!preview->isEmpty())
 112         {
 113                 RS_Painter * painter = graphicView->createDirectPainter();
 114                 painter->setPreviewMode();
 115                 painter->setOffset(offset);
 116                 graphicView->drawEntity(preview, false);
 117                 graphicView->destroyPainter();
 118         }
 119
 120         visible = !visible;
 121 #else
 122         // OK, we need a new approach here--direct painting is NOT acceptable anymore!
 123         // So, something like this:
 124         /*
 125         In graphicView->drawEntity(preview, false); we set the pointer to an entity
 126         in the GV. We set a flag telling paintEvent that this is a preview, and then
 127         call update() in the view. *That* should do it...
 128         */
 129 //This doesn't work, causes the thing to crash...
 130 //Now it works, just need to upgrade the rendering paths so that they aren't all
 131 //fucked up like QCad was...
 132 #if 1
 133         if (!preview->isEmpty())
 134         {
 135                 graphicView->SetPreviewMode();
 136                 graphicView->SetPreviewEntity(preview);
 137                 graphicView->SetPreviewOffset(offset);
 138                 graphicView->redraw();
 139         }
 140
 141         visible = !visible;
 142 #endif
 143 #endif
 144 }