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Patch from Henry Vermaak. Implements TMemo.CaretPos under gtk2

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git-svn-id: trunk@14980 -
This commit is contained in:
sekelsenmat 2008-04-26 00:42:45 +00:00
parent 44e2489797
commit d2156b2d40
3 changed files with 49 additions and 0 deletions
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1
docs/Contributors.txt
View File

@ -46,6 +46,7 @@ Graeme Geldenhuys
Grzegorz Zakrzewski
Hakan Kizilhan
Hans-Joachim Ott
Henry Vermaak
Hwang Weng Sun
Ido Kanner
James Chandler Jr.

45
lcl/interfaces/gtk2/gtk2wscustommemo.inc
View File

@ -328,5 +328,50 @@ begin
Result := Abs(gtk_text_iter_get_offset(@EndIter) - gtk_text_iter_get_offset(@StartIter));
end;
class function TGtk2WSCustomMemo.GetCaretPos(const ACustomEdit: TCustomEdit
): TPoint;
var
TextView: PGtkTextView;
TextBuffer: PGtkTextBuffer;
TextMark: PGtkTextMark;
TextIter: TGtkTextIter;
begin
Result := Point(0, 0);
if not WSCheckHandleAllocated(ACustomEdit, 'GetCaretPos') then
Exit;
TextView := PGtkTextView(GetWidgetInfo(Pointer(ACustomEdit.Handle), False)^.CoreWidget);
TextBuffer := gtk_text_view_get_buffer(TextView);
TextMark := gtk_text_buffer_get_insert(TextBuffer);
gtk_text_buffer_get_iter_at_mark(TextBuffer, @TextIter, TextMark);
Result.X := gtk_text_iter_get_line_offset(@TextIter);
Result.Y := gtk_text_iter_get_line(@TextIter);
end;
class procedure TGtk2WSCustomMemo.SetCaretPos(const ACustomEdit: TCustomEdit;
const NewPos: TPoint);
var
TextView: PGtkTextView;
TextBuffer: PGtkTextBuffer;
TextIter: TGtkTextIter;
begin
if not WSCheckHandleAllocated(ACustomEdit, 'SetCaretPos') then
Exit;
TextView := PGtkTextView(GetWidgetInfo(Pointer(ACustomEdit.Handle), False)^.CoreWidget);
TextBuffer := gtk_text_view_get_buffer(TextView);
if (NewPos.X < 0) or (NewPos.Y < 0)
then Exit;
{ this is quicker, but crashes if given invalid coords:
gtk_text_buffer_get_iter_at_line_offset(TextBuffer, @TextIter, NewPos.Y, NewPos.X); }
if (NewPos.Y >= gtk_text_buffer_get_line_count(TextBuffer))
then Exit;
gtk_text_buffer_get_iter_at_line(TextBuffer, @TextIter, NewPos.Y);
if (NewPos.X >= gtk_text_iter_get_chars_in_line(@TextIter))
then Exit;
gtk_text_iter_set_line_offset(@TextIter, NewPos.X);
gtk_text_buffer_place_cursor(TextBuffer, @TextIter);
end;

3
lcl/interfaces/gtk2/gtk2wsstdctrls.pp
View File

@ -221,6 +221,9 @@ type
class procedure GetPreferredSize(const AWinControl: TWinControl;
var PreferredWidth, PreferredHeight: integer;
WithThemeSpace: Boolean); override;
class function GetCaretPos(const ACustomEdit: TCustomEdit): TPoint; override;
class procedure SetCaretPos(const ACustomEdit: TCustomEdit; const NewPos: TPoint); override;
end;
{ TGtk2WSEdit }