src/apps/haikudepot/ui_generic/LinkedBitmapView.cpp

   1 /*
   2  * Copyright 2014, Stephan Aßmus <superstippi@gmx.de>.
   3  * All rights reserved. Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include "LinkedBitmapView.h"
   8
   9 #include <Cursor.h>
  10
  11
  12 LinkedBitmapView::LinkedBitmapView(const char* name, BMessage* message)
  13         :
  14         BitmapView(name),
  15         BInvoker(message, NULL),
  16         fEnabled(true),
  17         fMouseInside(false)
  18 {
  19 }
  20
  21
  22 void
  23 LinkedBitmapView::AllAttached()
  24 {
  25         //  We don't want to use BitmapView's default behavior here.
  26 }
  27
  28
  29 void
  30 LinkedBitmapView::MouseMoved(BPoint where, uint32 transit,
  31         const BMessage* dragMessage)
  32 {
  33         // TODO: Check that no buttons are pressed, don't indicate clickable
  34         // link if a button is held.
  35         if (transit == B_ENTERED_VIEW) {
  36                 fMouseInside = true;
  37                 _UpdateViewCursor();
  38         } else if (transit == B_EXITED_VIEW) {
  39                 fMouseInside = false;
  40                 _UpdateViewCursor();
  41         }
  42 }
  43
  44
  45 void
  46 LinkedBitmapView::MouseDown(BPoint where)
  47 {
  48         if (fEnabled)
  49                 Invoke(Message());
  50 }
  51
  52
  53 void
  54 LinkedBitmapView::SetEnabled(bool enabled)
  55 {
  56         if (fEnabled != enabled) {
  57                 fEnabled = enabled;
  58                 _UpdateViewCursor();
  59         }
  60 }
  61
  62
  63 void
  64 LinkedBitmapView::_UpdateViewCursor()
  65 {
  66         if (fEnabled && fMouseInside) {
  67                 BCursor cursor(B_CURSOR_ID_FOLLOW_LINK);
  68                 SetViewCursor(&cursor, true);
  69         } else {
  70                 BCursor cursor(B_CURSOR_SYSTEM_DEFAULT);
  71                 SetViewCursor(&cursor, true);
  72         }
  73 }