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{
fpGUI - Free Pascal GUI Toolkit
Copyright (C) 2006 - 2010 See the file AUTHORS.txt, included in this
distribution, for details of the copyright.
See the file COPYING.modifiedLGPL, included in this distribution,
for details about redistributing fpGUI.
This program 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.
Description:
This unit contains various "composite" components. Components that
work together as a single component.
}
unit fpg_editbtn;
{$mode objfpc}{$H+}
interface
uses
Classes
,fpg_base
,fpg_main
,fpg_widget
,fpg_edit
,fpg_button
,fpg_panel
;
type
TfpgBaseEditButton = class(TfpgAbstractPanel)
private
FOnButtonClick: TNotifyEvent;
FReadOnly: Boolean;
procedure SetReadOnly(const AValue: Boolean);
function GetExtraHint: TfpgString;
procedure SetExtraHint(const AValue: TfpgString);
protected
FEdit: TfpgEdit;
FButton: TfpgButton;
function GetOnShowHint: THintEvent; override;
procedure SetOnShowHint(const AValue: THintEvent); override;
procedure SetHint(const AValue: TfpgString); override;
function GetHint: TfpgString; override;
procedure InternalButtonClick(Sender: TObject); virtual;
procedure HandleResize(AWidth, AHeight: TfpgCoord); override;
property ExtraHint: TfpgString read GetExtraHint write SetExtraHint;
property ReadOnly: Boolean read FReadOnly write SetReadOnly default False;
property OnButtonClick: TNotifyEvent read FOnButtonClick write FOnButtonClick;
public
constructor Create(AOwner: TComponent); override;
end;
TFilenameSetEvent = procedure(Sender: TObject; const AOldValue, ANewValue: TfpgString) of object;
TfpgFileNameEdit = class(TfpgBaseEditButton)
private
FOnFilenameSet: TFilenameSetEvent;
FFilter: TfpgString;
FInitialDir: TfpgString;
procedure SetFilter(const AValue: TfpgString);
procedure SetFileName(const AValue: TfpgString);
function GetFileName: TfpgString;
procedure DoFilenameSet(const AOld, ANew: TfpgString);
protected
procedure HandlePaint; override;
procedure InternalButtonClick(Sender: TObject); override;
public
constructor Create(AOwner: TComponent); override;
published
property Align;
property Enabled;
property ExtraHint;
property FileName: TfpgString read GetFileName write SetFileName;
property InitialDir: TfpgString read FInitialDir write FInitialDir;
property Filter: TfpgString read FFilter write SetFilter;
property ReadOnly;
property TabOrder;
property OnButtonClick;
property OnShowHint;
property OnFilenameSet: TFilenameSetEvent read FOnFilenameSet write FOnFilenameSet;
end;
TfpgDirectoryEdit = class(TfpgBaseEditButton)
private
FRootDirectory: TfpgString;
function GetDirectory: TfpgString;
procedure SetDirectory(const AValue: TfpgString);
protected
procedure HandlePaint; override;
procedure InternalButtonClick(Sender: TObject); override;
public
constructor Create(AOwner: TComponent); override;
published
property Align;
property Directory: TfpgString read GetDirectory write SetDirectory;
property Enabled;
property ExtraHint;
property RootDirectory: TfpgString read FRootDirectory write FRootDirectory;
property ReadOnly;
property TabOrder;
property OnButtonClick;
property OnShowHint;
end;
TfpgFontEdit = class(TfpgBaseEditButton)
protected
function GetFontDesc: TfpgString; virtual;
procedure SetFontDesc(const AValue: TfpgString); virtual;
procedure HandlePaint; override;
procedure InternalButtonClick(Sender: TObject); override;
public
constructor Create(AOwner: TComponent); override;
published
property Align;
property Enabled;
property ExtraHint;
property FontDesc: TfpgString read GetFontDesc write SetFontDesc;
property ReadOnly;
property TabOrder;
property OnButtonClick;
property OnShowHint;
end;
TfpgEditButton = class(TfpgBaseEditButton)
protected
function GetText: TfpgString;
procedure SetText(const AValue: TfpgString);
procedure HandlePaint; override;
public
constructor Create(AOwner: TComponent); override;
published
property Align;
property Enabled;
property ExtraHint;
property ReadOnly;
property TabOrder;
property Text: TfpgString read GetText write SetText;
property OnButtonClick;
property OnShowHint;
end;
implementation
uses
fpg_constants
,fpg_dialogs
,fpg_utils
;
{ TfpgEditButton }
function TfpgEditButton.GetText: TfpgString;
begin
Result := FEdit.Text;
end;
procedure TfpgEditButton.SetText(const AValue: TfpgString);
begin
FEdit.Text := AValue;
end;
procedure TfpgEditButton.HandlePaint;
var
img: TfpgImage;
begin
inherited HandlePaint;
// only so that it looks pretty in the UI Designer
if csDesigning in ComponentState then
begin
FEdit.Visible := False;
FButton.Visible := False;
Canvas.Clear(clBoxColor);
fpgStyle.DrawControlFrame(Canvas, 0, 0, Width - Height, Height);
fpgStyle.DrawButtonFace(Canvas, Width - Height, 0, Height, Height, [btfIsEmbedded]);
Canvas.SetFont(fpgStyle.DefaultFont);
if Text <> '' then
begin
Canvas.TextColor := clText3;
Canvas.DrawText(4, 0, Width - Height, Height, Text, [txtLeft, txtVCenter]);
end
else
begin
Canvas.TextColor := clShadow1;
Canvas.DrawText(0, 0, Width - Height, Height, ClassName, [txtHCenter, txtVCenter]);
end;
img := fpgImages.GetImage('stdimg.ellipse'); // don't free the img instance - we only got a reference
if img <> nil then
Canvas.DrawImage(Width-Height+((Height-img.Width) div 2), (Height-img.Height) div 2, img);
end;
end;
constructor TfpgEditButton.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FButton.ImageName := 'stdimg.ellipse';
end;
{ TfpgBaseEditButton }
procedure TfpgBaseEditButton.SetReadOnly(const AValue: Boolean);
begin
if FReadOnly = AValue then
Exit;
FReadOnly := AValue;
FEdit.ReadOnly := FReadOnly;
FButton.Enabled := not FReadOnly; // Buttons don't have ReadOnly property.
end;
function TfpgBaseEditButton.GetExtraHint: TfpgString;
begin
Result := FEdit.ExtraHint;
end;
procedure TfpgBaseEditButton.SetExtraHint(const AValue: TfpgString);
begin
FEdit.ExtraHint := AValue;
end;
function TfpgBaseEditButton.GetOnShowHint: THintEvent;
begin
// rewire the FEdit event to the parent (composite) component
Result := FEdit.OnShowHint;
end;
procedure TfpgBaseEditButton.SetOnShowHint(const AValue: THintEvent);
begin
// rewire the FEdit event to the parent (composite) component
FEdit.OnShowHint := AValue;
end;
procedure TfpgBaseEditButton.SetHint(const AValue: TfpgString);
begin
FEdit.Hint := AValue;
end;
function TfpgBaseEditButton.GetHint: TfpgString;
begin
Result := FEdit.Hint;
end;
procedure TfpgBaseEditButton.InternalButtonClick(Sender: TObject);
begin
// do nothing
if Assigned(OnButtonClick) then
OnButtonClick(self);
end;
procedure TfpgBaseEditButton.HandleResize(AWidth, AHeight: TfpgCoord);
begin
inherited HandleResize(AWidth, AHeight);
{ resizing can now occur before the component is shown, so we need extra
checks here, like are we still busy creating everything. }
if not (csLoading in ComponentState) then
begin
if csDesigning in ComponentState then
begin
FEdit.Visible := False;
FButton.Visible := False;
end
else
begin
FEdit.SetPosition(0, 0, AWidth - AHeight, AHeight);
FButton.SetPosition(AWidth - AHeight, 0, AHeight, AHeight);
end;
end;
end;
constructor TfpgBaseEditButton.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
Width := 140;
Height := 24;
FReadOnly := False;
FEdit := TfpgEdit.Create(self);
with FEdit do
begin
Name := 'FEdit';
SetPosition(0, 0, self.Width - self.Height, self.Height);
Text := '';
FontDesc := '#Edit1';
TabOrder := 0;
end;
FButton := TfpgButton.Create(self);
with FButton do
begin
Name := 'FButton';
SetPosition(self.Width - self.Height, 0, self.Height, self.Height);
Text := '';
FontDesc := '#Label1';
ImageMargin := -1;
ImageName := 'stdimg.elipses';
ImageSpacing := 0;
TabOrder := 1;
OnClick := @InternalButtonClick;
end;
end;
{ TfpgFileNameEdit }
constructor TfpgFileNameEdit.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FFilter := '';
FButton.ImageName := 'stdimg.folderfile';
end;
procedure TfpgFileNameEdit.SetFilter(const AValue: TfpgString);
begin
FFilter := AValue;
end;
procedure TfpgFileNameEdit.SetFileName(const AValue: TfpgString);
begin
FEdit.Text := AValue;
end;
function TfpgFileNameEdit.GetFileName: TfpgString;
begin
Result := FEdit.Text;
end;
procedure TfpgFileNameEdit.DoFilenameSet(const AOld, ANew: TfpgString);
begin
if Assigned(FOnFilenameSet) then
FOnFilenameSet(self, AOld, ANew);
end;
procedure TfpgFileNameEdit.HandlePaint;
var
img: TfpgImage;
begin
inherited HandlePaint;
// only so that it looks pretty in the UI Designer
if csDesigning in ComponentState then
begin
FEdit.Visible := False;
FButton.Visible := False;
Canvas.Clear(clBoxColor);
fpgStyle.DrawControlFrame(Canvas, 0, 0, Width - Height, Height);
fpgStyle.DrawButtonFace(Canvas, Width - Height, 0, Height, Height, [btfIsEmbedded]);
Canvas.SetFont(fpgStyle.DefaultFont);
if Filename <> '' then
begin
Canvas.TextColor := clText3;
Canvas.DrawText(4, 0, Width - Height, Height, Filename, [txtLeft, txtVCenter]);
end
else
begin
Canvas.TextColor := clShadow1;
Canvas.DrawText(0, 0, Width - Height, Height, ClassName, [txtHCenter, txtVCenter]);
end;
img := fpgImages.GetImage('stdimg.folderfile'); // don't free the img instance - we only got a reference
if img <> nil then
Canvas.DrawImage(Width-Height+((Height-img.Width) div 2), (Height-img.Height) div 2, img);
end;
end;
procedure TfpgFileNameEdit.InternalButtonClick(Sender: TObject);
var
dlg: TfpgFileDialog;
old: TfpgString;
begin
old := FEdit.Text;
dlg := TfpgFileDialog.Create(nil);
try
if FileName = '' then
begin
if FInitialDir <> '' then
dlg.InitialDir := FInitialDir;
end
else
begin
// Use path of existing filename
dlg.InitialDir := fpgExtractFilePath(FileName);
if dlg.InitialDir = '' then // FileName had no path
dlg.InitialDir := FInitialDir;
end;
if FFilter = '' then
dlg.Filter := rsAllFiles + ' (' + AllFilesMask + ')' + '|' + AllFilesMask
else
dlg.Filter := FFilter + '|' + rsAllFiles + ' (' + AllFilesMask + ')' + '|' + AllFilesMask;
if dlg.RunOpenFile then
begin
FEdit.Text := dlg.FileName;
end;
finally
dlg.Free;
end;
inherited InternalButtonClick(Sender);
if old <> FEdit.Text then
DoFilenameSet(old, FEdit.Text);
end;
{ TfpgDirectoryEdit}
constructor TfpgDirectoryEdit.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FButton.ImageName := 'stdimg.folder';
end;
function TfpgDirectoryEdit.GetDirectory: TfpgString;
begin
Result := FEdit.Text;
end;
procedure TfpgDirectoryEdit.SetDirectory(const AValue: TfpgString);
begin
FEdit.Text := AValue;
end;
procedure TfpgDirectoryEdit.HandlePaint;
var
img: TfpgImage;
begin
inherited HandlePaint;
// only so that it looks pretty in the UI Designer
if csDesigning in ComponentState then
begin
FEdit.Visible := False;
FButton.Visible := False;
Canvas.Clear(clBoxColor);
fpgStyle.DrawControlFrame(Canvas, 0, 0, Width - Height, Height);
fpgStyle.DrawButtonFace(Canvas, Width - Height, 0, Height, Height, [btfIsEmbedded]);
Canvas.SetFont(fpgStyle.DefaultFont);
if Directory <> '' then
begin
Canvas.TextColor := clText3;
Canvas.DrawText(4, 0, Width - Height, Height, Directory, [txtLeft, txtVCenter]);
end
else
begin
Canvas.TextColor := clShadow1;
Canvas.DrawText(0, 0, Width - Height, Height, ClassName, [txtHCenter, txtVCenter]);
end;
img := fpgImages.GetImage('stdimg.folder'); // don't free the img instance - we only got a reference
if img <> nil then
Canvas.DrawImage(Width-Height+((Height-img.Width) div 2), (Height-img.Height) div 2, img);
end;
end;
procedure TfpgDirectoryEdit.InternalButtonClick(Sender: TObject);
var
dlg: TfpgSelectDirDialog;
begin
dlg := TfpgSelectDirDialog.Create(nil);
try
if FRootDirectory <> '' then
dlg.RootDirectory := FRootDirectory;
dlg.SelectedDir := Directory;
if dlg.ShowModal = mrOK then
begin
FEdit.Text:= dlg.SelectedDir;
end;
finally
dlg.Free;
end;
inherited InternalButtonClick(Sender);
end;
{ TfpgFontEdit }
function TfpgFontEdit.GetFontDesc: TfpgString;
begin
Result := FEdit.Text;
end;
procedure TfpgFontEdit.SetFontDesc(const AValue: TfpgString);
begin
FEdit.Text := AValue;
end;
procedure TfpgFontEdit.HandlePaint;
var
img: TfpgImage;
begin
inherited HandlePaint;
// only so that it looks pretty in the UI Designer
if csDesigning in ComponentState then
begin
FEdit.Visible := False;
FButton.Visible := False;
Canvas.Clear(clBoxColor);
fpgStyle.DrawControlFrame(Canvas, 0, 0, Width - Height, Height);
fpgStyle.DrawButtonFace(Canvas, Width - Height, 0, Height, Height, [btfIsEmbedded]);
Canvas.TextColor := clShadow1;
Canvas.SetFont(fpgStyle.DefaultFont);
Canvas.DrawText(0, 0, Width - Height, Height, ClassName, [txtHCenter, txtVCenter]);
img := fpgImages.GetImage('stdimg.font'); // don't free the img instance - we only got a reference
if img <> nil then
Canvas.DrawImage(Width-Height+((Height-img.Width) div 2), (Height-img.Height) div 2, img);
end;
end;
procedure TfpgFontEdit.InternalButtonClick(Sender: TObject);
var
f: TfpgString;
begin
f := FontDesc;
if SelectFontDialog(f) then
FontDesc := f;
inherited InternalButtonClick(Sender);
end;
constructor TfpgFontEdit.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FButton.ImageName := 'stdimg.font';
end;
end.
|