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program listviewtest;
{$mode objfpc}{$H+}
uses
Classes, sysutils,
fpg_base, fpg_main, fpg_listview, fpg_form, fpg_button, fpg_edit,
fpg_checkbox, fpg_splitter, fpg_panel, fpg_imagelist, fpg_stringutils;
type
{ TMainForm }
TMainForm = class(TfpgForm)
procedure ShowFocusItemChange(Sender: TObject);
private
FEdit: TfpgEdit;
FAddButton: TfpgButton;
FListView: TfpgListView;
FSplitter: TfpgSplitter;
FTmpListView: TfpgListView;
FQuitButton: TfpgButton;
FCheck: TfpgCheckBox;
FShowFocus: TfpgCheckBox;
procedure LVColumnClicked(Listview: TfpgListView; Column: TfpgLVColumn; Button: Integer);
procedure CloseBttn(Sender: TObject);
procedure AddBttn(Sender: TObject);
procedure SortButton(Sender: TObject);
procedure ShowHeadersChange(Sender: TObject);
procedure PaintItem(ListView: TfpgListView; ACanvas: TfpgCanvas; Item: TfpgLVItem;
ItemIndex: Integer; Area:TfpgRect; var PaintPart: TfpgLVItemPaintPart);
procedure ItemSelectionChanged(ListView: TfpgListView; Item: TfpgLVItem;
ItemIndex: Integer; Selected: Boolean);
public
constructor Create(AOwner: TComponent); override;
end;
{ TMainForm }
procedure TMainForm.ShowFocusItemChange(Sender: TObject);
begin
FListView.ShowFocusRect:=TfpgCheckBox(Sender).Checked;
end;
procedure TMainForm.LVColumnClicked(Listview: TfpgListView; Column: TfpgLVColumn;
Button: Integer);
begin
if Column.ColumnIndex = 0 then
begin
SortButton(nil);
end;
end;
procedure TMainForm.CloseBttn(Sender: TObject);
begin
Close;
end;
procedure TMainForm.AddBttn(Sender: TObject);
var
Item: TfpgLVItem;
I: Integer;
begin
FListView.BeginUpdate;
FTmpListView.BeginUpdate;
//FListView.Items.Capacity := FListView.Items.Capacity + 2000000;
//for I := 0 to 1999999 do begin
Item := FListView.ItemAdd;
Item.Caption := FEdit.Text + IntToStr(Random(1000));
Item.SubItems.Add('c0');
Item.SubItems.Add('c1');
Item.SubItems.Add('c2');
Item.SubItems.Add('c3');
Item.SubItems.Add('c4');
//end;
FListView.EndUpdate;
FTmpListView.EndUpdate;
end;
function CompareProc(Item1, Item2: Pointer): Integer;
var
a, b: TfpgLVItem;
begin
a := TfpgLVItem(Item1);
b := TfpgLVItem(Item2);
if UTF8Length(a.Caption) < UTF8Length(b.Caption) then
Result := -1
else if UTF8Length(a.Caption) > UTF8Length(b.Caption) then
Result := 1
else
Result := CompareText(a.Caption, b.Caption);
end;
procedure TMainForm.SortButton(Sender: TObject);
begin
FListView.Items.Sort(@CompareProc);
end;
procedure TMainForm.ShowHeadersChange(Sender: TObject);
begin
FListView.ShowHeaders := TfpgCheckBox(Sender).Checked;
end;
procedure TMainForm.PaintItem(ListView: TfpgListView; ACanvas: TfpgCanvas;
Item: TfpgLVItem; ItemIndex: Integer; Area: TfpgRect; var PaintPart: TfpgLVItemPaintPart);
begin
if ItemIndex mod 2 = 0 then ACanvas.TextColor := clRed;
if ItemIndex mod 3 = 0 then ACanvas.TextColor := clBlue;
if ItemIndex mod 4 = 0 then ACanvas.TextColor := clGray;
if ItemIndex mod 5 = 0 then ACanvas.TextColor := clPink;
end;
procedure TMainForm.ItemSelectionChanged(ListView: TfpgListView;
Item: TfpgLVItem; ItemIndex: Integer; Selected: Boolean);
begin
//WriteLn('Item changed: ', ItemIndex, ' ', Item.Caption, ' ',Selected);
end;
constructor TMainForm.Create(AOwner: TComponent);
var
LVColumn: TfpgLVColumn;
TopPanel,
BottomPanel: TfpgPanel;
IL: TStringList;
i: Integer;
FImageList: TfpgImageList;
FSelectedImageList: TfpgImageList;
TmpImage: TfpgImage;
begin
inherited Create(AOwner);
Randomize;
WindowTitle := 'ListView Test';
SetPosition(200, 200, 640, 480);
IL := TStringList.Create;
fpgImages.ListImages(IL);
FImageList := TfpgImageList.Create;
FSelectedImageList := TfpgImageList.Create;
for i := 0 to IL.Count-1 do
FImageList.AddImage(fpgImages.GetImage(IL.Strings[i]));
IL.Free;
// invert the items for the 'selected' images
for i := 0 to FImageList.Count-1 do
begin
TmpImage := FImageList.Items[i].Image.ImageFromSource;
TmpImage.Invert;
FSelectedImageList.AddImage(TmpImage);
end;
BottomPanel := TfpgPanel.Create(Self);
BottomPanel.Align := alBottom;
BottomPanel.Height := 40;
BottomPanel.Parent := Self;
BottomPanel.Text := '';
TopPanel := TfpgPanel.Create(Self);
TopPanel.Align := alClient;
TopPanel.Parent := Self;
TopPanel.Text := '';
FListView := TfpgListView.Create(TopPanel);
with FListView do begin
Parent := TopPanel;
Align := alLeft;
Width := 320;
OnPaintItem := @PaintItem;
OnSelectionChanged := @ItemSelectionChanged;
MultiSelect := True;
Images := FImageList;
SubItemImages := FImageList;
ImagesSelected := FSelectedImageList;
OnColumnClick := @LVColumnClicked;
end;
FSplitter := TfpgSplitter.Create(TopPanel);
with FSplitter do begin
Parent := TopPanel;
Align:=alLeft;
end;
FTmpListView := TfpgListView.Create(TopPanel);
with FTmpListView do begin
Parent := TopPanel;
Align := alClient;
//OnPaintItem := @PaintItem;
Items := FListView.Items;
end;
LVColumn := TfpgLVColumn.Create(FListView.Columns);
LVColumn.Caption := 'Column 1';
LVColumn.Width := 150;
LVColumn.Height := 50;
LVColumn.Resizable := True;
LVColumn.Alignment := taLeftJustify;
LVColumn.ColumnIndex := 0;
FListView.Columns.Add(LVColumn);
FTmpListView.Columns.Add(LVColumn);
LVColumn := TfpgLVColumn.Create(FListView.Columns);
LVColumn.Caption := 'Column 2';
LVColumn.Width := 100;
LVColumn.Height := 50;
LVColumn.Alignment := taCenter;
LVColumn.ColumnIndex := 1;
//LVColumn.Visible := False;
FListView.Columns.Add(LVColumn);
//FTmpListView.Columns.Add(LVColumn);
LVColumn := TfpgLVColumn.Create(FListView.Columns);
LVColumn.Caption := 'Column 3';
LVColumn.Width := 200;
LVColumn.Height := 50;
//LVColumn.Visible := False;
LVColumn.Resizable := True;
LVColumn.Alignment := taRightJustify;
LVColumn.ColumnIndex := 2;
FListView.Columns.Add(LVColumn);
FTmpListView.Columns.Add(LVColumn);
FEdit := TfpgEdit.Create(BottomPanel);
with FEdit do begin
Parent := BottomPanel;
Top := 10;
Left := 10;
Width := 100;
end;
FAddButton := TfpgButton.Create(BottomPanel);
with FAddButton do begin
Parent := BottomPanel;
Top := 10;
Left := 120;
Width := 80;
Text := 'Add';
OnClick := @AddBttn;
end;
FQuitButton := TfpgButton.Create(BottomPanel);
with FQuitButton do begin
Parent := BottomPanel;
ImageName := 'stdimg.Quit';
ShowImage := True;
Top := 10;
Left := -10;
Width := 80;
Text := 'Quit';
Anchors := [anRight, anBottom];
OnClick := @CloseBttn;
end;
FCheck := TfpgCheckBox.Create(BottomPanel);
with FCheck do begin
Parent := BottomPanel;
Top := 10;
Left := 205;
Width := 110;
Checked := True;
Text := 'Show Headers';
OnChange := @ShowHeadersChange;
end;
FShowFocus := TfpgCheckBox.Create(BottomPanel);
with FShowFocus do begin
Parent := BottomPanel;
Top := 10;
Left := 320;
Width := 130;
Checked := True;
Text := 'Show Item Focus';
OnChange:=@ShowFocusItemChange;
end;
end;
begin
fpgApplication.Initialize;
with TMainForm.Create(nil) do
begin
Show;
fpgApplication.Run;
Free;
end;
end.
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