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SynCompletion: Customize hint handling for long lines in drop-down window

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git-svn-id: trunk@25826 -
This commit is contained in:
martin 2010-06-01 22:50:28 +00:00
parent c334353214
commit cc05c07cf1
1 changed files with 114 additions and 23 deletions
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137
components/synedit/syncompletion.pas
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@ -42,7 +42,7 @@ interface
uses
LCLProc, LCLIntf, LCLType, SynEditMiscProcs,
Classes, Graphics, Forms, Controls, StdCtrls, Menus,
Classes, Graphics, Forms, Controls, StdCtrls, ExtCtrls, Menus,
SysUtils, SynEditKeyCmds, SynEditHighlighter,
SynEdit;
@ -71,6 +71,7 @@ type
TSynBaseCompletionHint = class(THintWindow)
private
FCompletionForm: TSynBaseCompletionForm;
FDisplayRect: TRect;
FIndex: Integer;
public
constructor Create(AOwner: TComponent); override;
@ -78,8 +79,16 @@ type
AData: Pointer): TRect; override;
procedure Paint; override;
property Index: Integer read FIndex write FIndex;
property DisplayRect: TRect read FDisplayRect write FDisplayRect;
end;
TSynComletionLongHintType = (sclpNone,
sclpExtendRightOnly,
sclpExtendHalfLeft,
sclpExtendUnlimitedLeft
);
{ TSynBaseCompletionForm }
TSynBaseCompletionForm = class(TForm)
@ -106,6 +115,9 @@ type
FTextColor: TColor;
FTextSelectedColor: TColor;
FHint: TSynBaseCompletionHint;
FHintTimer: TTimer;
FLongLineHintTime: Integer;
FLongLineHintType: TSynComletionLongHintType;
procedure UTF8KeyPress(var UTF8Key: TUTF8Char); override;
procedure SetCurrentString(const Value: string);
procedure KeyDown(var Key: Word; Shift: TShiftState); override;
@ -133,10 +145,12 @@ type
fCurrentEditor: TComponent;
FOnMeasureItem: TSynBaseCompletionMeasureItem;
FOnPositionChanged: TNotifyEvent;
procedure SetLongLineHintTime(const AValue: Integer);
public
constructor Create(AOwner: Tcomponent); override;
destructor Destroy; override;
procedure ShowItemHint(AIndex: Integer);
procedure OnHintTimer(Sender: TObject);
published
property CurrentString: string read FCurrentString write SetCurrentString;
property OnKeyPress: TKeyPressEvent read FOnKeyPress write FOnKeyPress;
@ -165,6 +179,10 @@ type
property TextColor: TColor read FTextColor write FTextColor;
property TextSelectedColor: TColor
read FTextSelectedColor write FTextSelectedColor;
property LongLineHintTime: Integer read FLongLineHintTime
write SetLongLineHintTime default 0;
property LongLineHintType: TSynComletionLongHintType read FLongLineHintType
write FLongLineHintType default sclpExtendRightOnly;
end;
{ TSynBaseCompletion }
@ -177,6 +195,8 @@ type
FWidth: Integer;
function GetCaseSensitive: boolean;
function GetClSelect: TColor;
function GetLongLineHintTime: Integer;
function GetLongLineHintType: TSynComletionLongHintType;
function GetOnMeasureItem: TSynBaseCompletionMeasureItem;
function GetOnPositionChanged: TNotifyEvent;
procedure SetCaseSensitive(const AValue: boolean);
@ -191,6 +211,8 @@ type
function GetPosition: Integer;
procedure SetCurrentString(const Value: string);
procedure SetItemList(const Value: TStrings);
procedure SetLongLineHintTime(const AValue: Integer);
procedure SetLongLineHintType(const AValue: TSynComletionLongHintType);
procedure SetNbLinesInWindow(const Value: Integer);
procedure SetOnCancel(const Value: TNotifyEvent);
procedure SetOnKeyPress(const Value: TKeyPressEvent);
@ -251,6 +273,10 @@ type
property ClSelect: TColor read GetClSelect write SetClSelect;
property CaseSensitive: boolean read GetCaseSensitive write SetCaseSensitive;
property Width: Integer read FWidth write SetWidth;
property LongLineHintTime: Integer read GetLongLineHintTime
write SetLongLineHintTime default 0;
property LongLineHintType: TSynComletionLongHintType read GetLongLineHintType
write SetLongLineHintType default sclpExtendRightOnly;
end;
{ TSynCompletion }
@ -367,6 +393,11 @@ begin
Color:=clNone;
FBackgroundColor:=clWhite;
FHint := TSynBaseCompletionHint.Create(Self);
FHintTimer := TTimer.Create(nil);
FHintTimer.OnTimer := {$IFDEF FPC}@{$ENDIF}OnHintTimer;
FHintTimer.Interval := 0;
FLongLineHintTime := 0;
FLongLineHintType := sclpExtendRightOnly;
Visible := false;
ClSelect := clHighlight;
TStringList(FItemList).OnChange := {$IFDEF FPC}@{$ENDIF}StringListChange;
@ -383,6 +414,7 @@ begin
// completion box lost focus
// this can happen when a hint window is clicked => ToDo
Visible := False;
FHintTimer.Enabled := False;
FHint.Visible := False;
if Assigned(OnCancel) then OnCancel(Self);
if (FCurrentEditor<>nil) and (TCustomSynEdit(fCurrentEditor).HandleAllocated)
@ -395,40 +427,72 @@ begin
bitmap.free;
Scroll.Free;
FItemList.Free;
FHintTimer.Free;
FHint.Free;
inherited destroy;
end;
procedure TSynBaseCompletionForm.ShowItemHint(AIndex: Integer);
var
P: TPoint;
R: TRect;
P: TPoint;
M: TMonitor;
MinLeft: Integer;
begin
if Visible and (AIndex >= 0) and (AIndex < ItemList.Count) then
begin
// CalcHintRect uses the current index
FHint.Index := AIndex;
// calculate the size
R := FHint.CalcHintRect(Monitor.Width, ItemList[AIndex], nil);
FHintTimer.Enabled := False;
if Visible and (AIndex >= 0) and (AIndex < ItemList.Count) and
(FLongLineHintType <> sclpNone)
then begin
if not(FHint.IsVisible and (FHint.Index = AIndex)) then begin
if (FHint.Index <> AIndex) and (FLongLineHintTime > 0) then
FHint.Hide;
if R.Right <= ClientWidth then begin
FHint.Hide;
Exit;
// CalcHintRect uses the current index
FHint.Index := AIndex;
// calculate the size
R := FHint.CalcHintRect(Monitor.Width, ItemList[AIndex], nil);
if R.Right <= ClientWidth then begin
FHint.Hide;
Exit;
end;
// calculate the position
M := Monitor;
P := ClientToScreen(Point(0, (AIndex - Scroll.Position) * FFontHeight));
case FLongLineHintType of
sclpExtendHalfLeft: MinLeft := Max(M.Left, P.X - ClientWidth div 2);
sclpExtendUnlimitedLeft: MinLeft := M.Left;
else MinLeft := P.X;
end;
P.X := Max(MinLeft,
Min(P.X, // Start at drop-down Left boundary
M.Left + M.Width - R.Right - 1 // Or push left, if hitting right Monitor border
)
);
P.Y := Max(M.Top, Min(P.Y, M.Top + M.Height - R.Bottom - 1));
// actually Width and Height
R.Right := Min(r.Right, M.Left + M.Width - 1 - P.X);
R.Bottom := Min(r.Bottom, M.Top + M.Height - 1 - P.Y);
FHint.DisplayRect := Bounds(P.X, P.Y, R.Right, R.Bottom);
if FLongLineHintTime > 0 then
FHintTimer.Enabled := True
else
OnHintTimer(nil);
end;
// calculate the position
M := Monitor;
P := ClientToScreen(Point(0, (AIndex - Scroll.Position) * FFontHeight));
P.X := Max(M.Left, Min(P.X, M.Left + M.Width - R.Right - 1));
P.Y := Max(M.Top, Min(P.Y, M.Top + M.Height - R.Bottom - 1));
R.Right := Min(r.Right, M.Left + M.Width - 1);
R.Bottom := Min(r.Bottom, M.Top + M.Height - 1);
FHint.ActivateHint(Bounds(P.X, P.Y, R.Right, R.Bottom), ItemList[AIndex]);
FHint.Invalidate;
end
else FHint.Hide;
else begin
FHint.Hide;
end;
end;
procedure TSynBaseCompletionForm.OnHintTimer(Sender: TObject);
begin
FHintTimer.Enabled := False;
FHint.ActivateHint(FHint.DisplayRect, ItemList[FHint.Index]);
FHint.Invalidate;
end;
procedure TSynBaseCompletionForm.KeyDown(var Key: Word;
@ -759,6 +823,13 @@ begin
end;
end;
procedure TSynBaseCompletionForm.SetLongLineHintTime(const AValue: Integer);
begin
if FLongLineHintTime = AValue then exit;
FLongLineHintTime := AValue;
FHintTimer.Interval := AValue;
end;
procedure TSynBaseCompletionForm.SetItemList(const Value: TStrings);
begin
FItemList.Assign(Value);
@ -957,6 +1028,16 @@ begin
form.ItemList := Value;
end;
procedure TSynBaseCompletion.SetLongLineHintTime(const AValue: Integer);
begin
Form.LongLineHintTime := AValue;
end;
procedure TSynBaseCompletion.SetLongLineHintType(const AValue: TSynComletionLongHintType);
begin
Form.LongLineHintType := AValue;
end;
procedure TSynBaseCompletion.SetNbLinesInWindow(const Value: Integer);
begin
form.NbLinesInWindow := Value;
@ -1004,6 +1085,16 @@ begin
Result := Form.ClSelect;
end;
function TSynBaseCompletion.GetLongLineHintTime: Integer;
begin
Result := Form.LongLineHintTime;
end;
function TSynBaseCompletion.GetLongLineHintType: TSynComletionLongHintType;
begin
Result := Form.LongLineHintType;
end;
function TSynBaseCompletion.GetCaseSensitive: boolean;
begin
Result := Form.CaseSensitive;