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 #include "rs_debug.h"
  18 #include "graphicview.h"
  19 #include "rs_preview.h"
  20
  21 /**
  22  * Constructor.
  23  *
  24  * Sets the entity container on which the action class inherited
  25  * from this interface operates.
  26  */
  27 RS_PreviewActionInterface::RS_PreviewActionInterface(const char * name,
  28         RS_EntityContainer & container, GraphicView & graphicView):
  29         RS_ActionInterface(name, container, graphicView)
  30 {
  31         RS_DEBUG->print("RS_PreviewActionInterface::RS_PreviewActionInterface: Setting up action with preview: \"%s\"", name);
  32
  33         // Preview is linked to the container for getting access to document
  34         // settings / dictionary variables
  35         preview = new RS_Preview(&container);
  36         visible = false;
  37
  38         RS_DEBUG->print("RS_PreviewActionInterface::RS_PreviewActionInterface: Setting up action with preview: \"%s\": OK", name);
  39 }
  40
  41 /** Destructor */
  42 RS_PreviewActionInterface::~RS_PreviewActionInterface()
  43 {
  44         delete preview;
  45 }
  46
  47 void RS_PreviewActionInterface::init(int status)
  48 {
  49         RS_ActionInterface::init(status);
  50         clearPreview();
  51 }
  52
  53 void RS_PreviewActionInterface::finish()
  54 {
  55         RS_ActionInterface::finish();
  56         deletePreview();
  57         clearPreview();
  58 }
  59
  60 void RS_PreviewActionInterface::suspend()
  61 {
  62         RS_ActionInterface::suspend();
  63         deletePreview();
  64 }
  65
  66 void RS_PreviewActionInterface::resume()
  67 {
  68         RS_ActionInterface::resume();
  69         drawPreview();
  70 }
  71
  72 void RS_PreviewActionInterface::trigger()
  73 {
  74         RS_ActionInterface::trigger();
  75         deletePreview();
  76         clearPreview();
  77 }
  78
  79 /**
  80  * Clears the preview by removing all entities in it.
  81  */
  82 void RS_PreviewActionInterface::clearPreview()
  83 {
  84         preview->clear();
  85 }
  86
  87 /**
  88  * Draws the preview on the screen.
  89  */
  90 void RS_PreviewActionInterface::drawPreview()
  91 {
  92         if (!visible)
  93                 xorPreview();
  94 }
  95
  96 /**
  97  * Deletes the preview from the screen.
  98  */
  99 void RS_PreviewActionInterface::deletePreview()
 100 {
 101         if (visible)
 102                 xorPreview();
 103 }
 104
 105 /**
 106  * Draws / deletes the current preview.
 107  */
 108 void RS_PreviewActionInterface::xorPreview()
 109 {
 110 #warning "!!! RS_PreviewActionInterface::xorPreview() is DEPRECATED !!!"
 111 //not true anymore..
 112 //#warning "!!! xorPreview() not working AT ALL !!!"
 113 #if 0
 114         if (!preview->isEmpty())
 115         {
 116                 RS_Painter * painter = graphicView->createDirectPainter();
 117                 painter->setPreviewMode();
 118                 painter->setOffset(offset);
 119                 graphicView->drawEntity(preview, false);
 120                 graphicView->destroyPainter();
 121         }
 122
 123         visible = !visible;
 124 #else
 125         // OK, we need a new approach here--direct painting is NOT acceptable anymore!
 126         // So, something like this:
 127         /*
 128         In graphicView->drawEntity(preview, false); we set the pointer to an entity
 129         in the GV. We set a flag telling paintEvent that this is a preview, and then
 130         call update() in the view. *That* should do it...
 131         */
 132 //This doesn't work, causes the thing to crash...
 133 //Now it works, just need to upgrade the rendering paths so that they aren't all
 134 //fucked up like QCad was...
 135         if (!preview->isEmpty())
 136         {
 137                 graphicView->SetPreviewMode();
 138                 graphicView->SetPreviewEntity(preview);
 139                 graphicView->SetPreviewOffset(offset);
 140                 graphicView->redraw();
 141         }
 142
 143         visible = !visible;
 144 #endif
 145 }