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richmemo: fixed SetTextAttributes, implemented GetTextAttributes for Gtk2

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git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@989 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
skalogryz 2009-10-27 12:53:39 +00:00
parent 526c860186
commit 9c6bbd1077
1 changed files with 92 additions and 12 deletions
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104
components/richmemo/gtk2/gtk2richmemo.pas
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@ -45,10 +45,56 @@ type
published
class function CreateHandle(const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle; override;
class procedure SetTextAttributes(const AWinControl: TWinControl; TextStart, TextLen: Integer; const Params: TIntFontParams); override;
class function GetTextAttributes(const AWinControl: TWinControl; TextStart: Integer; var Params: TIntFontParams): Boolean; override;
end;
implementation
function gtktextattr_underline(const a : TGtkTextAppearance) : Boolean;
begin
Result:=((a.flag0 and bm_TGtkTextAppearance_underline) shr bp_TGtkTextAppearance_underline) > 0;
end;
function gtktextattr_strikethrough(const a : TGtkTextAppearance) : Boolean;
begin
Result:=((a.flag0 and bm_TGtkTextAppearance_strikethrough) shr bp_TGtkTextAppearance_strikethrough) > 0;
end;
function GtkTextAttrToFontParams(const textAttr: TGtkTextAttributes; var FontParams: TIntFontParams): Boolean;
var
w : integer;
st : TPangoStyle;
pf : PPangoFontDescription;
begin
FontParams.Style := [];
FontParams.Name := '';
FontParams.Size := 0;
FontParams.Color := 0;
pf := textAttr.font;
Result := Assigned(pf);
if not Result then Exit;
if Assigned(pf) then begin
FontParams.Name := pango_font_description_get_family(pf);
FontParams.Size := pango_font_description_get_size(pf);
if not pango_font_description_get_size_is_absolute(pf) then
FontParams.Size := Round(FontParams.Size / PANGO_SCALE);
w := pango_font_description_get_weight(pf);
if w > PANGO_WEIGHT_NORMAL then Include(FontParams.Style, fsBold);
st := pango_font_description_get_style(pf);
if st and PANGO_STYLE_ITALIC > 0 then Include(FontParams.Style, fsItalic);
end;
FontParams.Color := TGDKColorToTColor(textAttr.appearance.fg_color);
if gtktextattr_underline(textAttr.appearance) then Include(FontParams.Style, fsUnderline);
if gtktextattr_strikethrough(textAttr.appearance) then Include(FontParams.Style, fsStrikeOut);
end;
class procedure TGtk2WSCustomRichMemo.SetCallbacks(
const AGtkWidget: PGtkWidget; const AWidgetInfo: PWidgetInfo);
begin
@ -135,19 +181,19 @@ begin
if nm = '' then nm := #0;
tag := gtk_text_buffer_create_tag (buffer, nil,
'foreground-gdk', [@gcolor,
'size-set', gboolean(true),
'size-points', Double(Params.Size),
'underline-set', gboolean(True),
'underline', PangoUnderline[fsUnderline in Params.Style],
'weight-set', gboolean(True),
'weight', PangoBold[fsBold in Params.Style],
'style-set', gboolean(True),
'style', PangoItalic[fsItalic in Params.Style],
'strikethrough-set', gboolean(True),
'strikethrough ', gboolean(fsStrikeOut in Params.Style),
'familty-set', gboolean(true),
'family-set', [gboolean(gTRUE),
'family', @nm[1],
'foreground-gdk', @gcolor,
'size-set', gboolean(gTRUE),
'size-points', Double(Params.Size),
'underline-set', gboolean(gTRUE),
'underline', PangoUnderline[fsUnderline in Params.Style],
'weight-set', gboolean(gTRUE),
'weight', PangoBold[fsBold in Params.Style],
'style-set', gboolean(gTRUE),
'style', PangoItalic[fsItalic in Params.Style],
'strikethrough-set', gboolean(gTRUE),
'strikethrough', gboolean(fsStrikeOut in Params.Style),
nil]);
gtk_text_buffer_get_iter_at_offset (buffer, @istart, TextStart);
@ -155,5 +201,39 @@ begin
gtk_text_buffer_apply_tag(buffer, tag, @istart, @iend);
end;
class function TGtk2WSCustomRichMemo.GetTextAttributes(const AWinControl: TWinControl; TextStart: Integer; var Params: TIntFontParams): Boolean;
var
Widget : PGtkWidget;
TextWidget : PGtkWidget;
list : PGList;
buffer : PGtkTextBuffer;
iter : TGtkTextIter;
attr : PGtkTextAttributes;
begin
Widget := PGtkWidget(PtrUInt(AWinControl.Handle));
list := gtk_container_get_children(PGtkContainer(Widget));
if not Assigned(list) then Exit;
TextWidget := PGtkWidget(list^.data);
if not Assigned(TextWidget) then Exit;
buffer := gtk_text_view_get_buffer (PGtkTextView(TextWidget));
if not Assigned(buffer) then Exit;
attr := gtk_text_view_get_default_attributes(PGtkTextView(TextWidget));
Result := Assigned(attr);
if not Assigned(attr) then Exit;
gtk_text_buffer_get_iter_at_offset(buffer, @iter, TextStart);
Result := gtk_text_iter_get_attributes(@iter, attr);
//if Result then
{Result := }
Result := true;
GtkTextAttrToFontParams(attr^, Params);
gtk_text_attributes_unref(attr);
end;
end.