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Diffstat (limited to 'gtk/ScintillaGTKAccessible.h')
| -rw-r--r-- | gtk/ScintillaGTKAccessible.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/gtk/ScintillaGTKAccessible.h b/gtk/ScintillaGTKAccessible.h new file mode 100644 index 000000000..de1584ded --- /dev/null +++ b/gtk/ScintillaGTKAccessible.h @@ -0,0 +1,163 @@ +/* Scintilla source code edit control */ +/* ScintillaGTKAccessible.h - GTK+ accessibility for ScintillaGTK */ +/* Copyright 2016 by Colomban Wendling <colomban@geany.org> + * The License.txt file describes the conditions under which this software may be distributed. */ + +#ifndef SCINTILLAGTKACCESSIBLE_H +#define SCINTILLAGTKACCESSIBLE_H + +#ifdef SCI_NAMESPACE +namespace Scintilla { +#endif + +class ScintillaGTKAccessible { +private: + GtkAccessible *accessible; + ScintillaGTK *sci; + + // local state for comparing + Position old_pos; + std::vector<SelectionRange> old_sels; + + void UpdateCursor(); + void Notify(GtkWidget *widget, gint code, SCNotification *nt); + static void SciNotify(GtkWidget *widget, gint code, SCNotification *nt, gpointer data) { + try { + reinterpret_cast<ScintillaGTKAccessible*>(data)->Notify(widget, code, nt); + } catch (...) {} + } + + Position ByteOffsetFromCharacterOffset(Position startByte, int characterOffset) { + Position pos = sci->pdoc->GetRelativePosition(startByte, characterOffset); + if (pos == INVALID_POSITION) { + // clamp invalid positions inside the document + if (characterOffset > 0) { + return sci->pdoc->Length(); + } else { + return 0; + } + } + return pos; + } + + Position ByteOffsetFromCharacterOffset(int characterOffset) { + return ByteOffsetFromCharacterOffset(0, characterOffset); + } + + int CharacterOffsetFromByteOffset(Position byteOffset) { + return sci->pdoc->CountCharacters(0, byteOffset); + } + + void CharacterRangeFromByteRange(Position startByte, Position endByte, int *startChar, int *endChar) { + *startChar = CharacterOffsetFromByteOffset(startByte); + *endChar = *startChar + sci->pdoc->CountCharacters(startByte, endByte); + } + + void ByteRangeFromCharacterRange(int startChar, int endChar, Position& startByte, Position& endByte) { + startByte = ByteOffsetFromCharacterOffset(startChar); + endByte = ByteOffsetFromCharacterOffset(startByte, endChar - startChar); + } + + Position PositionBefore(Position pos) { + return sci->pdoc->MovePositionOutsideChar(pos - 1, -1, true); + } + + Position PositionAfter(Position pos) { + return sci->pdoc->MovePositionOutsideChar(pos + 1, 1, true); + } + + // For AtkText + gchar *GetTextRangeUTF8(Position startByte, Position endByte); + gchar *GetText(int startChar, int endChar); + gchar *GetTextAfterOffset(int charOffset, AtkTextBoundary boundaryType, int *startChar, int *endChar); + gchar *GetTextBeforeOffset(int charOffset, AtkTextBoundary boundaryType, int *startChar, int *endChar); + gchar *GetTextAtOffset(int charOffset, AtkTextBoundary boundaryType, int *startChar, int *endChar); + gchar *GetStringAtOffset(int charOffset, AtkTextGranularity granularity, int *startChar, int *endChar); + gunichar GetCharacterAtOffset(int charOffset); + gint GetCharacterCount(); + gint GetCaretOffset(); + gboolean SetCaretOffset(int charOffset); + gint GetOffsetAtPoint(gint x, gint y, AtkCoordType coords); + void GetCharacterExtents(int charOffset, gint *x, gint *y, gint *width, gint *height, AtkCoordType coords); + AtkAttributeSet *GetAttributesForStyle(unsigned int style); + AtkAttributeSet *GetRunAttributes(int charOffset, int *startChar, int *endChar); + AtkAttributeSet *GetDefaultAttributes(); + gint GetNSelections(); + gchar *GetSelection(gint selection_num, int *startChar, int *endChar); + gboolean AddSelection(int startChar, int endChar); + gboolean RemoveSelection(int selection_num); + gboolean SetSelection(gint selection_num, int startChar, int endChar); + // for AtkEditableText + bool InsertStringUTF8(Position bytePos, const gchar *utf8, int lengthBytes); + void SetTextContents(const gchar *contents); + void InsertText(const gchar *contents, int lengthBytes, int *charPosition); + void CopyText(int startChar, int endChar); + void CutText(int startChar, int endChar); + void DeleteText(int startChar, int endChar); + void PasteText(int charPosition); + +public: + ScintillaGTKAccessible(GtkAccessible *accessible, GtkWidget *widget); + ~ScintillaGTKAccessible(); + + static ScintillaGTKAccessible *FromAccessible(GtkAccessible *accessible); + static ScintillaGTKAccessible *FromAccessible(AtkObject *accessible) { + return FromAccessible(GTK_ACCESSIBLE(accessible)); + } + // So ScintillaGTK can notify us + void ChangeDocument(Document *oldDoc, Document *newDoc); + void NotifyReadOnly(); + + // Helper GtkWidget methods + static AtkObject *WidgetGetAccessibleImpl(GtkWidget *widget, AtkObject **cache, gpointer widget_parent_class); + + // ATK methods + + class AtkTextIface { + public: + static void init(::AtkTextIface *iface); + + private: + AtkTextIface(); + + static gchar *GetText(AtkText *text, int start_offset, int end_offset); + static gchar *GetTextAfterOffset(AtkText *text, int offset, AtkTextBoundary boundary_type, int *start_offset, int *end_offset); + static gchar *GetTextBeforeOffset(AtkText *text, int offset, AtkTextBoundary boundary_type, int *start_offset, int *end_offset); + static gchar *GetTextAtOffset(AtkText *text, gint offset, AtkTextBoundary boundary_type, gint *start_offset, gint *end_offset); + static gchar *GetStringAtOffset(AtkText *text, gint offset, AtkTextGranularity granularity, gint *start_offset, gint *end_offset); + static gunichar GetCharacterAtOffset(AtkText *text, gint offset); + static gint GetCharacterCount(AtkText *text); + static gint GetCaretOffset(AtkText *text); + static gboolean SetCaretOffset(AtkText *text, gint offset); + static gint GetOffsetAtPoint(AtkText *text, gint x, gint y, AtkCoordType coords); + static void GetCharacterExtents(AtkText *text, gint offset, gint *x, gint *y, gint *width, gint *height, AtkCoordType coords); + static AtkAttributeSet *GetRunAttributes(AtkText *text, gint offset, gint *start_offset, gint *end_offset); + static AtkAttributeSet *GetDefaultAttributes(AtkText *text); + static gint GetNSelections(AtkText *text); + static gchar *GetSelection(AtkText *text, gint selection_num, gint *start_pos, gint *end_pos); + static gboolean AddSelection(AtkText *text, gint start, gint end); + static gboolean RemoveSelection(AtkText *text, gint selection_num); + static gboolean SetSelection(AtkText *text, gint selection_num, gint start, gint end); + }; + class AtkEditableTextIface { + public: + static void init(::AtkEditableTextIface *iface); + + private: + AtkEditableTextIface(); + + static void SetTextContents(AtkEditableText *text, const gchar *contents); + static void InsertText(AtkEditableText *text, const gchar *contents, gint length, gint *position); + static void CopyText(AtkEditableText *text, gint start, gint end); + static void CutText(AtkEditableText *text, gint start, gint end); + static void DeleteText(AtkEditableText *text, gint start, gint end); + static void PasteText(AtkEditableText *text, gint position); + }; +}; + +#ifdef SCI_NAMESPACE +} +#endif + + +#endif /* SCINTILLAGTKACCESSIBLE_H */ |