src/apps/haikudepot/textview/TextDocumentView.h

   1 /*
   2  * Copyright 2013-2015, Stephan Aßmus <superstippi@gmx.de>.
   3  * All rights reserved. Distributed under the terms of the MIT License.
   4  */
   5 #ifndef TEXT_DOCUMENT_VIEW_H
   6 #define TEXT_DOCUMENT_VIEW_H
   7
   8 #include <String.h>
   9 #include <View.h>
  10
  11 #include "TextDocument.h"
  12 #include "TextDocumentLayout.h"
  13 #include "TextEditor.h"
  14
  15
  16 class BClipboard;
  17 class BMessageRunner;
  18
  19
  20 class TextDocumentView : public BView {
  21 public:
  22                                                                 TextDocumentView(const char* name = NULL);
  23         virtual                                         ~TextDocumentView();
  24
  25         // BView implementation
  26         virtual void                            MessageReceived(BMessage* message);
  27
  28         virtual void                            Draw(BRect updateRect);
  29
  30         virtual void                            AttachedToWindow();
  31         virtual void                            FrameResized(float width, float height);
  32         virtual void                            WindowActivated(bool active);
  33         virtual void                            MakeFocus(bool focus = true);
  34
  35         virtual void                            MouseDown(BPoint where);
  36         virtual void                            MouseUp(BPoint where);
  37         virtual void                            MouseMoved(BPoint where, uint32 transit,
  38                                                                         const BMessage* dragMessage);
  39
  40         virtual void                            KeyDown(const char* bytes, int32 numBytes);
  41         virtual void                            KeyUp(const char* bytes, int32 numBytes);
  42
  43         virtual BSize                           MinSize();
  44         virtual BSize                           MaxSize();
  45         virtual BSize                           PreferredSize();
  46
  47         virtual bool                            HasHeightForWidth();
  48         virtual void                            GetHeightForWidth(float width, float* min,
  49                                                                         float* max, float* preferred);
  50
  51         // TextDocumentView interface
  52                         void                            SetTextDocument(
  53                                                                         const TextDocumentRef& document);
  54
  55                         void                            SetEditingEnabled(bool enabled);
  56                         void                            SetTextEditor(
  57                                                                         const TextEditorRef& editor);
  58
  59                         void                            SetInsets(float inset);
  60                         void                            SetInsets(float horizontal, float vertical);
  61                         void                            SetInsets(float left, float top, float right,
  62                                                                         float bottom);
  63
  64                         void                            SetSelectionEnabled(bool enabled);
  65                         void                            SetCaret(BPoint where, bool extendSelection);
  66
  67                         void                            SelectAll();
  68                         bool                            HasSelection() const;
  69                         void                            GetSelection(int32& start, int32& end) const;
  70
  71                         void                            Copy(BClipboard* clipboard);
  72
  73 private:
  74                         float                           _TextLayoutWidth(float viewWidth) const;
  75
  76                         void                            _UpdateScrollBars();
  77
  78                         void                            _ShowCaret(bool show);
  79                         void                            _BlinkCaret();
  80                         void                            _DrawCaret(int32 textOffset);
  81                         void                            _DrawSelection();
  82                         void                            _GetSelectionShape(BShape& shape,
  83                                                                         int32 start, int32 end);
  84
  85 private:
  86                         TextDocumentRef         fTextDocument;
  87                         TextDocumentLayout      fTextDocumentLayout;
  88                         TextEditorRef           fTextEditor;
  89
  90                         float                           fInsetLeft;
  91                         float                           fInsetTop;
  92                         float                           fInsetRight;
  93                         float                           fInsetBottom;
  94
  95                         BRect                           fCaretBounds;
  96                         BMessageRunner*         fCaretBlinker;
  97                         int32                           fCaretBlinkToken;
  98                         bool                            fSelectionEnabled;
  99                         bool                            fShowCaret;
 100                         bool                            fMouseDown;
 101 };
 102
 103 #endif // TEXT_DOCUMENT_VIEW_H