src/apps/icon-o-matic/shape/commands/AddPointCommand.cpp

   1 /*
   2  * Copyright 2006, Haiku.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Stephan Aßmus <superstippi@gmx.de>
   7  */
   8
   9 #include "AddPointCommand.h"
  10
  11 #include <stdio.h>
  12
  13 #include <Catalog.h>
  14 #include <Locale.h>
  15
  16 #include "VectorPath.h"
  17
  18
  19 #undef B_TRANSLATION_CONTEXT
  20 #define B_TRANSLATION_CONTEXT "Icon-O-Matic-AddPointCmd"
  21
  22
  23 // constructor
  24 AddPointCommand::AddPointCommand(VectorPath* path,
  25                                                                  int32 index,
  26                                                                  const int32* selected,
  27                                                                  int32 count)
  28         : PathCommand(path),
  29           fIndex(index),
  30           fOldSelection(NULL),
  31           fOldSelectionCount(count)
  32 {
  33         if (fOldSelectionCount > 0 && selected) {
  34                 fOldSelection = new int32[fOldSelectionCount];
  35                 memcpy(fOldSelection, selected, fOldSelectionCount * sizeof(int32));
  36         }
  37 }
  38
  39 // destructor
  40 AddPointCommand::~AddPointCommand()
  41 {
  42         delete[] fOldSelection;
  43 }
  44
  45 // Perform
  46 status_t
  47 AddPointCommand::Perform()
  48 {
  49         status_t status = InitCheck();
  50         if (status < B_OK)
  51                 return status;
  52
  53         // path point is already added,
  54         // but we don't know the parameters yet
  55         if (!fPath->GetPointsAt(fIndex, fPoint, fPointIn, fPointOut))
  56                 status = B_NO_INIT;
  57
  58         return status;
  59 }
  60
  61 // Undo
  62 status_t
  63 AddPointCommand::Undo()
  64 {
  65         status_t status = InitCheck();
  66         if (status < B_OK)
  67                 return status;
  68
  69         // remove point
  70         if (fPath->RemovePoint(fIndex)) {
  71                 // restore selection before adding point
  72                 _Select(fOldSelection, fOldSelectionCount);
  73         } else {
  74                 status = B_ERROR;
  75         }
  76
  77         return status;
  78 }
  79
  80 // Redo
  81 status_t
  82 AddPointCommand::Redo()
  83 {
  84         status_t status = InitCheck();
  85         if (status < B_OK)
  86                 return status;
  87
  88         AutoNotificationSuspender _(fPath);
  89
  90         // add point again
  91         if (fPath->AddPoint(fPoint, fIndex)) {
  92                 fPath->SetPoint(fIndex, fPoint, fPointIn, fPointOut, true);
  93                 // select added point
  94                 _Select(&fIndex, 1);
  95         } else {
  96                 status = B_ERROR;
  97         }
  98
  99         return status;
 100 }
 101
 102 // GetName
 103 void
 104 AddPointCommand::GetName(BString& name)
 105 {
 106 //      name << _GetString(ADD_CONTROL_POINT, "Add Control Point");
 107         name << B_TRANSLATE("Add Control Point");
 108 }