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(*
GTK-Kylix Library: GTKUtils - Various utilities
Version 0.6.17 (last updated 2003-10-07)
Copyright (C) 2003 Tomas Bzatek <tbzatek@users.sourceforge.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307 USA.
*)
unit GTKUtils;
interface
uses gtk2, gdk2, glib2, SysUtils, GTKControls, GTKClasses;
(********************************************************************************************************************************)
function PgcharToString(const S: Pgchar): string;
function StringToPgchar(const S: string): Pgchar;
function AllocateColor(Widget: PGtkWidget; R, G, B: Word): PGdkColor; overload;
function AllocateColor(R, G, B: Word): TGDKColor; overload;
function KeyValToUnicode(const Key: word): guint32;
function UnicodeToKeyVal(const UnicodeVal: guint32): word;
function GetDefaultForegroundColor(State: integer): PGdkColor; overload;
function GetDefaultForegroundColor(Widget: TGTKControl; State: integer): PGdkColor; overload;
function GetDefaultBackgroundColor(State: integer): PGdkColor; overload;
function GetDefaultBackgroundColor(Widget: TGTKControl; State: integer): PGdkColor; overload;
function GetDefaultBaseColor(State: integer): PGdkColor; overload;
function GetDefaultBaseColor(Widget: TGTKControl; State: integer): PGdkColor; overload;
function GetDefaultTextColor(State: integer): PGdkColor; overload;
function GetDefaultTextColor(Widget: TGTKControl; State: integer): PGdkColor; overload;
function GDKColorToPGdkColor(Color: TGDKColor): PGdkColor;
function PGdkColorToGDKColor(Color: PGdkColor): TGDKColor;
function GDKColorToString(Color: TGDKColor): string;
function StringToGDKColor(Str: string; var Color: TGDKColor): boolean;
(********************************************************************************************************************************)
implementation
(********************************************************************************************************************************)
function PgcharToString(const S: Pgchar): string;
begin
Result := string(S);
end;
(********************************************************************************************************************************)
function StringToPgchar(const S: string): Pgchar;
begin
Result := PChar(S);
end;
(********************************************************************************************************************************)
function AllocateColor(Widget: PGtkWidget; R, G, B: Word): PGdkColor;
begin
New(Result);
with Result^ do begin
Pixel := 0;
Red := R;
Green := G;
Blue := B;
end;
if Assigned(Widget) then gdk_colormap_alloc_color(gtk_widget_get_colormap(Widget), Result, True, False);
end;
function AllocateColor(R, G, B: Word): TGDKColor;
begin
Result.red := R;
Result.green := G;
Result.blue := B;
end;
(********************************************************************************************************************************)
function KeyValToUnicode(const Key: word): guint32;
begin
Result := gdk_keyval_to_unicode(Key);
end;
(********************************************************************************************************************************)
function UnicodeToKeyVal(const UnicodeVal: guint32): word;
begin
Result := gdk_unicode_to_keyval(UnicodeVal);
end;
(********************************************************************************************************************************)
function GetDefaultForegroundColor(State: integer): PGdkColor;
var Widget: PGtkWidget;
Style: PGtkStyle;
begin
Widget := gtk_window_new(GTK_WINDOW_TOPLEVEL);
Style := gtk_rc_get_style(Widget);
Result := @Style^.fg[State];
gtk_widget_destroy(Widget);
end;
function GetDefaultForegroundColor(Widget: TGTKControl; State: integer): PGdkColor;
var Style: PGtkStyle;
begin
Style := gtk_rc_get_style(Widget.FWidget);
Result := @Style^.fg[State];
end;
(********************************************************************************************************************************)
function GetDefaultBackgroundColor(State: integer): PGdkColor;
var Widget: PGtkWidget;
Style: PGtkStyle;
begin
Widget := gtk_window_new(GTK_WINDOW_TOPLEVEL);
Style := gtk_rc_get_style(Widget);
Result := @Style^.bg[State];
gtk_widget_destroy(Widget);
end;
function GetDefaultBackgroundColor(Widget: TGTKControl; State: integer): PGdkColor;
var Style: PGtkStyle;
begin
Style := gtk_rc_get_style(Widget.FWidget);
Result := @Style^.bg[State];
end;
(********************************************************************************************************************************)
function GetDefaultBaseColor(State: integer): PGdkColor;
var Widget: PGtkWidget;
Style: PGtkStyle;
begin
Widget := gtk_window_new(GTK_WINDOW_TOPLEVEL);
Style := gtk_rc_get_style(Widget);
Result := @Style^.base[State];
gtk_widget_destroy(Widget);
end;
function GetDefaultBaseColor(Widget: TGTKControl; State: integer): PGdkColor;
var Style: PGtkStyle;
begin
Style := gtk_rc_get_style(Widget.FWidget);
Result := @Style^.base[State];
end;
(********************************************************************************************************************************)
function GetDefaultTextColor(State: integer): PGdkColor;
var Widget: PGtkWidget;
Style: PGtkStyle;
begin
Widget := gtk_window_new(GTK_WINDOW_TOPLEVEL);
Style := gtk_rc_get_style(Widget);
Result := @Style^.text[State];
gtk_widget_destroy(Widget);
end;
function GetDefaultTextColor(Widget: TGTKControl; State: integer): PGdkColor;
var Style: PGtkStyle;
begin
Style := gtk_rc_get_style(Widget.FWidget);
Result := @Style^.text[State];
end;
(********************************************************************************************************************************)
function GDKColorToPGdkColor(Color: TGDKColor): PGdkColor;
begin
New(Result);
Result^.pixel := Color.pixel;
Result^.red := Color.red;
Result^.green := Color.green;
Result^.blue := Color.blue;
end;
(********************************************************************************************************************************)
function PGdkColorToGDKColor(Color: PGdkColor): TGDKColor;
begin
Result.pixel := Color.pixel;
Result.red := Color.red;
Result.green := Color.green;
Result.blue := Color.blue;
end;
(********************************************************************************************************************************)
function GDKColorToString(Color: TGDKColor): string;
begin
Result := Format('#%.2x%.2x%.2xFF', [Color.red div 256, Color.green div 256, Color.blue div 256]);
end;
(********************************************************************************************************************************)
function StringToGDKColor(Str: string; var Color: TGDKColor): boolean;
var AColor: PGdkColor;
begin
Result := False;
Str := ANSIUpperCase(Trim(Str));
if (Length(Str) < 7) or (Str[1] <> '#') then Exit;
try
New(AColor);
if Length(Str) = 9 then Delete(Str, 8, 2);
Result := boolean(gdk_color_parse(PChar(Str), AColor));
Color := PGdkColorToGDKColor(AColor);
Dispose(AColor);
except end;
end;
(********************************************************************************************************************************)
end.
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