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{-------------------------------------------------------------------------------
The contents of this file are subject to the Mozilla Public License
Version 1.1 (the "License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
the specific language governing rights and limitations under the License.
Alternatively, the contents of this file may be used under the terms of the
GNU General Public License Version 2 or later (the "GPL"), in which case
the provisions of the GPL are applicable instead of those above.
If you wish to allow use of your version of this file only under the terms
of the GPL and not to allow others to use your version of this file
under the MPL, indicate your decision by deleting the provisions above and
replace them with the notice and other provisions required by the GPL.
If you do not delete the provisions above, a recipient may use your version
of this file under either the MPL or the GPL.
-------------------------------------------------------------------------------}
unit SynEditMarkupSelection;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Graphics, Controls, LCLProc,
SynEditMarkup, SynEditMiscClasses, SynEditPointClasses;
type
{ TSynEditMarkupSelection }
TSynEditMarkupSelection = class(TSynEditMarkup)
private
FSelection: TSynEditSelection;
FColorTillEol: boolean; // colorize selection only till EOL
FMarkupInfoIncr: TSynSelectedColor; // Markup during incremental search
FMarkupInfoSelection: TSynSelectedColor; // Markup for normal Selection
FUseIncrementalColor : Boolean;
nSelStart, nSelEnd: integer; // start, end of selected area in current line (physical)
procedure SetColorTillEol(AValue: boolean);
procedure SetUseIncrementalColor(const AValue : Boolean);
procedure MarkupChangedIntern(AMarkup: TObject);
protected
procedure DoMarkupChanged(AMarkup: TSynSelectedColor); override;
procedure DoEnabledChanged(Sender: TObject); override;
public
constructor Create(ASynEdit : TSynEditBase; ASelection: TSynEditSelection);
destructor Destroy; override;
procedure PrepareMarkupForRow(aRow : Integer); override;
function GetMarkupAttributeAtRowCol(const aRow: Integer;
const aStartCol: TLazSynDisplayTokenBound;
const AnRtlInfo: TLazSynDisplayRtlInfo): TSynSelectedColor; override;
procedure GetNextMarkupColAfterRowCol(const aRow: Integer;
const aStartCol: TLazSynDisplayTokenBound;
const AnRtlInfo: TLazSynDisplayRtlInfo;
out ANextPhys, ANextLog: Integer); override;
property ColorTillEol: boolean read FColorTillEol write SetColorTillEol;
property UseIncrementalColor : Boolean read FUseIncrementalColor write SetUseIncrementalColor;
property MarkupInfoSeletion : TSynSelectedColor read FMarkupInfoSelection;
property MarkupInfoIncr : TSynSelectedColor read FMarkupInfoIncr;
end;
implementation
uses SynEdit, SynEditTypes;
{ TSynEditMarkupSelection }
procedure TSynEditMarkupSelection.SetUseIncrementalColor(const AValue : Boolean);
begin
if FUseIncrementalColor=AValue then exit;
FUseIncrementalColor:=AValue;
if FUseIncrementalColor
then MarkupInfo.Assign(FMarkupInfoIncr)
else MarkupInfo.Assign(FMarkupInfoSelection);
end;
procedure TSynEditMarkupSelection.SetColorTillEol(AValue: boolean);
begin
if FColorTillEol = AValue then Exit;
FColorTillEol := AValue;
DoMarkupChanged(nil);
end;
procedure TSynEditMarkupSelection.MarkupChangedIntern(AMarkup : TObject);
begin
if FUseIncrementalColor
then MarkupInfo.Assign(FMarkupInfoIncr)
else MarkupInfo.Assign(FMarkupInfoSelection);
end;
procedure TSynEditMarkupSelection.DoMarkupChanged(AMarkup: TSynSelectedColor);
var
p1, p2 : TPoint;
begin
inherited DoMarkupChanged(AMarkup);
if (not FSelection.SelAvail) or (TCustomSynEdit(SynEdit).HideSelection and not TCustomSynEdit(SynEdit).Focused) then
exit;
p1 := FSelection.FirstLineBytePos; // always ordered
p2 := FSelection.LastLineBytePos;
InvalidateSynLines(p1.y, p2.y);
end;
procedure TSynEditMarkupSelection.DoEnabledChanged(Sender: TObject);
begin
DoMarkupChanged(nil);
end;
constructor TSynEditMarkupSelection.Create(ASynEdit : TSynEditBase; ASelection: TSynEditSelection);
begin
inherited Create(ASynEdit);
FSelection := ASelection;
FMarkupInfoSelection := TSynSelectedColor.Create;
FMarkupInfoSelection.OnChange := @MarkupChangedIntern;
FMarkupInfoIncr := TSynSelectedColor.Create;
FMarkupInfoIncr.OnChange := @MarkupChangedIntern;
FColorTillEol := false;
MarkupInfo.Style := [];
MarkupInfo.StyleMask := [];
end;
destructor TSynEditMarkupSelection.Destroy;
begin
inherited Destroy;
FreeAndNil(FMarkupInfoIncr);
FreeAndNil(FMarkupInfoSelection);
end;
procedure TSynEditMarkupSelection.PrepareMarkupForRow(aRow : Integer);
var
p1, p2 : TPoint;
begin
nSelStart := 0;
nSelEnd := 0;
if (not TCustomSynEdit(SynEdit).HideSelection or TCustomSynEdit(SynEdit).Focused) then begin
p1 := FSelection.FirstLineBytePos; // always ordered
p2 := FSelection.LastLineBytePos;
if (p1.y > aRow) or (p2.y < aRow) or not (FSelection.SelAvail) then
exit;
nSelStart := 1;
nSelEnd := -1; // line end
if (FSelection.ActiveSelectionMode = smColumn) then begin
p1 := LogicalToPhysicalPos(p1);
p2 := LogicalToPhysicalPos(p2);
if (p1.X < p2.X) then begin
nSelStart := p1.X;
nSelEnd := p2.X;
end else begin
nSelStart := p2.X;
nSelEnd := p1.X;
end;
end else if (FSelection.ActiveSelectionMode = smNormal) then begin
if p1.y = aRow then begin
p1 := LogicalToPhysicalPos(p1);
nSelStart := p1.x;
end;
if p2.y = aRow then begin
p2 := LogicalToPhysicalPos(p2);
nSelEnd := p2.x;
end;
//colorize selected block only till EOL, not till edge of control
if FColorTillEol then begin
p2.x := Length(Lines[aRow-1]) + 1;
p2.y := aRow;
p2 := LogicalToPhysicalPos(p2);
if (nSelEnd = -1) then
Inc(p2.x, 1);
if (nSelEnd = -1) or (nSelEnd > p2.x) then
nSelEnd := p2.x;
end;
end;
end;
MarkupInfo.SetFrameBoundsPhys(nSelStart, nSelEnd);
end;
function TSynEditMarkupSelection.GetMarkupAttributeAtRowCol(const aRow: Integer;
const aStartCol: TLazSynDisplayTokenBound; const AnRtlInfo: TLazSynDisplayRtlInfo): TSynSelectedColor;
begin
result := nil;
if AnRtlInfo.IsRtl then begin
if ( ((nSelStart >= aStartCol.Physical) and (nSelStart < AnRtlInfo.PhysRight) ) or
(nSelStart <= AnRtlInfo.PhysLeft)
) and
( ((nSelEnd < aStartCol.Physical) and (nSelEnd > AnRtlInfo.PhysLeft)) or
(nSelEnd >= AnRtlInfo.PhysRight) or (nSelEnd < 0))
then
Result := MarkupInfo;
end else begin
if (nSelStart <= aStartCol.Physical) and
((nSelEnd > aStartCol.Physical) or (nSelEnd < 0))
then
Result := MarkupInfo;
end;
end;
procedure TSynEditMarkupSelection.GetNextMarkupColAfterRowCol(const aRow: Integer;
const aStartCol: TLazSynDisplayTokenBound; const AnRtlInfo: TLazSynDisplayRtlInfo; out ANextPhys,
ANextLog: Integer);
begin
ANextLog := -1;
ANextPhys := -1;
if AnRtlInfo.IsRtl then begin
if (nSelStart < aStartCol.Physical) then
ANextPhys := nSelStart;
if (nSelEnd < aStartCol.Physical) and (nSelEnd > 0) and
( (nSelStart >= aStartCol.Physical) or
((nSelStart <= AnRtlInfo.PhysLeft) and (nSelStart > 0)) )
then
ANextPhys := nSelEnd;
end else begin
if (nSelStart > aStartCol.Physical) then
ANextPhys := nSelStart;
if (nSelEnd > aStartCol.Physical) and (nSelStart <= aStartCol.Physical) then
ANextPhys := nSelEnd;
end;
end;
end.
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