9c6bbd1077
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@989 8e941d3f-bd1b-0410-a28a-d453659cc2b4
240 lines
8.7 KiB
ObjectPascal
240 lines
8.7 KiB
ObjectPascal
{
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gtk2richmemo.pas
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Author: Dmitry 'skalogryz' Boyarintsev
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*****************************************************************************
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* *
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* This file is part of the Lazarus Component Library (LCL) *
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* *
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* See the file COPYING.modifiedLGPL.txt, included in this distribution, *
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* for details about the copyright. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
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* *
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*****************************************************************************
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}
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unit Gtk2RichMemo;
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{$mode objfpc}{$H+}
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interface
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uses
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// Bindings
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gtk2, glib2, gdk2, pango,
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// FCL
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Classes, SysUtils,
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// LCL
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LCLType, Controls, Graphics,
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// Gtk2 widget
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GtkDef,
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GTKWinApiWindow, GtkGlobals, GtkProc, InterfaceBase,
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GtkWSControls,
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// RichMemo
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WSRichMemo;
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{ TGtk2WSCustomRichMemo }
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type
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TGtk2WSCustomRichMemo = class(TWSCustomRichMemo)
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protected
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class procedure SetCallbacks(const AGtkWidget: PGtkWidget; const AWidgetInfo: PWidgetInfo);
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published
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class function CreateHandle(const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle; override;
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class procedure SetTextAttributes(const AWinControl: TWinControl; TextStart, TextLen: Integer; const Params: TIntFontParams); override;
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class function GetTextAttributes(const AWinControl: TWinControl; TextStart: Integer; var Params: TIntFontParams): Boolean; override;
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end;
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implementation
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function gtktextattr_underline(const a : TGtkTextAppearance) : Boolean;
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begin
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Result:=((a.flag0 and bm_TGtkTextAppearance_underline) shr bp_TGtkTextAppearance_underline) > 0;
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end;
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function gtktextattr_strikethrough(const a : TGtkTextAppearance) : Boolean;
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begin
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Result:=((a.flag0 and bm_TGtkTextAppearance_strikethrough) shr bp_TGtkTextAppearance_strikethrough) > 0;
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end;
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function GtkTextAttrToFontParams(const textAttr: TGtkTextAttributes; var FontParams: TIntFontParams): Boolean;
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var
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w : integer;
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st : TPangoStyle;
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pf : PPangoFontDescription;
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begin
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FontParams.Style := [];
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FontParams.Name := '';
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FontParams.Size := 0;
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FontParams.Color := 0;
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pf := textAttr.font;
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Result := Assigned(pf);
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if not Result then Exit;
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if Assigned(pf) then begin
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FontParams.Name := pango_font_description_get_family(pf);
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FontParams.Size := pango_font_description_get_size(pf);
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if not pango_font_description_get_size_is_absolute(pf) then
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FontParams.Size := Round(FontParams.Size / PANGO_SCALE);
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w := pango_font_description_get_weight(pf);
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if w > PANGO_WEIGHT_NORMAL then Include(FontParams.Style, fsBold);
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st := pango_font_description_get_style(pf);
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if st and PANGO_STYLE_ITALIC > 0 then Include(FontParams.Style, fsItalic);
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end;
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FontParams.Color := TGDKColorToTColor(textAttr.appearance.fg_color);
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if gtktextattr_underline(textAttr.appearance) then Include(FontParams.Style, fsUnderline);
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if gtktextattr_strikethrough(textAttr.appearance) then Include(FontParams.Style, fsStrikeOut);
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end;
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class procedure TGtk2WSCustomRichMemo.SetCallbacks(
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const AGtkWidget: PGtkWidget; const AWidgetInfo: PWidgetInfo);
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begin
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TGtkWSWinControl.SetCallbacks(PGtkObject(AGtkWidget), TComponent(AWidgetInfo^.LCLObject));
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end;
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class function TGtk2WSCustomRichMemo.CreateHandle(const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle;
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var
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Widget,
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TempWidget: PGtkWidget;
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WidgetInfo: PWidgetInfo;
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begin
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Widget := gtk_scrolled_window_new(nil, nil);
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Result := TLCLIntfHandle(PtrUInt(Widget));
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if Result = 0 then Exit;
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{$IFDEF DebugLCLComponents}
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DebugGtkWidgets.MarkCreated(Widget,dbgsName(AWinControl));
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{$ENDIF}
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WidgetInfo := CreateWidgetInfo(Pointer(Result), AWinControl, AParams);
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TempWidget := gtk_text_view_new();
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gtk_container_add(PGtkContainer(Widget), TempWidget);
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GTK_WIDGET_UNSET_FLAGS(PGtkScrolledWindow(Widget)^.hscrollbar, GTK_CAN_FOCUS);
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GTK_WIDGET_UNSET_FLAGS(PGtkScrolledWindow(Widget)^.vscrollbar, GTK_CAN_FOCUS);
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gtk_scrolled_window_set_policy(PGtkScrolledWindow(Widget),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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// add border for memo
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gtk_scrolled_window_set_shadow_type(PGtkScrolledWindow(Widget),
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BorderStyleShadowMap[TCustomControl(AWinControl).BorderStyle]);
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SetMainWidget(Widget, TempWidget);
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GetWidgetInfo(Widget, True)^.CoreWidget := TempWidget;
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// gtk_text_buffer_set_text(gtk_text_view_get_buffer(PGtkTextView(TempWidget)), PChar(TCustomMemo(AWinControl).Text), -1);
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gtk_text_view_set_editable(PGtkTextView(TempWidget), True);
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{ //gtk_text_view_set_editable(PGtkTextView(TempWidget), not TCustomMemo(AWinControl).ReadOnly);
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//gtk_text_view_set_justification(PGtkTextView(TempWidget), aGtkJustification[TCustomMemo(AWinControl).Alignment]);
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if TCustomMemo(AWinControl).WordWrap then
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gtk_text_view_set_wrap_mode(PGtkTextView(TempWidget), GTK_WRAP_WORD)
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else
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gtk_text_view_set_wrap_mode(PGtkTextView(TempWidget), GTK_WRAP_NONE);}
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gtk_text_view_set_wrap_mode(PGtkTextView(TempWidget), GTK_WRAP_WORD);
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//gtk_text_view_set_accepts_tab(PGtkTextView(TempWidget), TCustomMemo(AWinControl).WantTabs);
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gtk_text_view_set_accepts_tab(PGtkTextView(TempWidget), True);
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gtk_widget_show_all(Widget);
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Set_RC_Name(AWinControl, Widget);
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SetCallbacks(Widget, WidgetInfo);
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end;
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class procedure TGtk2WSCustomRichMemo.SetTextAttributes(const AWinControl: TWinControl; TextStart, TextLen: Integer; const Params: TIntFontParams);
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var
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Widget, TextWidget: PGtkWidget;
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list : PGList;
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buffer : PGtkTextBuffer;
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tag : Pointer;
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istart : TGtkTextIter;
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iend : TGtkTextIter;
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gcolor : TGdkColor;
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nm : string;
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const
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PangoUnderline : array [Boolean] of Integer = (PANGO_UNDERLINE_NONE, PANGO_UNDERLINE_SINGLE);
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PangoBold : array [Boolean] of Integer = (PANGO_WEIGHT_NORMAL, PANGO_WEIGHT_BOLD);
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PangoItalic : array [Boolean] of Integer = (PANGO_STYLE_NORMAL, PANGO_STYLE_ITALIC);
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begin
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Widget := PGtkWidget(PtrUInt(AWinControl.Handle));
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list := gtk_container_get_children(PGtkContainer(Widget));
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if not Assigned(list) then Exit;
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TextWidget := PGtkWidget(list^.data);
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if not Assigned(TextWidget) then Exit;
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buffer := gtk_text_view_get_buffer (PGtkTextView(TextWidget));
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if not Assigned(buffer) then Exit;
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gcolor := TColortoTGDKColor(Params.Color);
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nm := Params.Name;
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if nm = '' then nm := #0;
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tag := gtk_text_buffer_create_tag (buffer, nil,
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'family-set', [gboolean(gTRUE),
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'family', @nm[1],
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'foreground-gdk', @gcolor,
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'size-set', gboolean(gTRUE),
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'size-points', Double(Params.Size),
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'underline-set', gboolean(gTRUE),
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'underline', PangoUnderline[fsUnderline in Params.Style],
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'weight-set', gboolean(gTRUE),
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'weight', PangoBold[fsBold in Params.Style],
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'style-set', gboolean(gTRUE),
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'style', PangoItalic[fsItalic in Params.Style],
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'strikethrough-set', gboolean(gTRUE),
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'strikethrough', gboolean(fsStrikeOut in Params.Style),
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nil]);
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gtk_text_buffer_get_iter_at_offset (buffer, @istart, TextStart);
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gtk_text_buffer_get_iter_at_offset (buffer, @iend, TextStart+TextLen);
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gtk_text_buffer_apply_tag(buffer, tag, @istart, @iend);
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end;
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class function TGtk2WSCustomRichMemo.GetTextAttributes(const AWinControl: TWinControl; TextStart: Integer; var Params: TIntFontParams): Boolean;
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var
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Widget : PGtkWidget;
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TextWidget : PGtkWidget;
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list : PGList;
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buffer : PGtkTextBuffer;
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iter : TGtkTextIter;
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attr : PGtkTextAttributes;
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begin
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Widget := PGtkWidget(PtrUInt(AWinControl.Handle));
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list := gtk_container_get_children(PGtkContainer(Widget));
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if not Assigned(list) then Exit;
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TextWidget := PGtkWidget(list^.data);
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if not Assigned(TextWidget) then Exit;
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buffer := gtk_text_view_get_buffer (PGtkTextView(TextWidget));
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if not Assigned(buffer) then Exit;
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attr := gtk_text_view_get_default_attributes(PGtkTextView(TextWidget));
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Result := Assigned(attr);
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if not Assigned(attr) then Exit;
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gtk_text_buffer_get_iter_at_offset(buffer, @iter, TextStart);
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Result := gtk_text_iter_get_attributes(@iter, attr);
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//if Result then
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{Result := }
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Result := true;
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GtkTextAttrToFontParams(attr^, Params);
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gtk_text_attributes_unref(attr);
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end;
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end.
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