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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit UserInterface.Control.Panel.Split;
interface
uses
Boolean,
Collection.List,
CumulativeSizes,
CumulativeSizes.Sizable,
Drawing.Canvas,
Event,
Geometry._2d.Integer32.Point,
Geometry._2d.Integer32.Rectangle,
Integer._32,
UserInterface.Control,
UserInterface.Control.Button.Glyph,
UserInterface.Control.Panel,
UserInterface.Control.Panel.Stack,
UserInterface.Control.Text.SingleLine,
UserInterface.Mouse.Event,
Windows.Gdi.Cursor;
type
TMouseSplitInformation = record
public
Splitter: TInteger32;
Panel: TInteger32;
InGrip: TBoolean;
procedure Clear();
end;
TSplitButtonPanel = class(THorizontalStackPanel)
private
function GetCaptionButtonVisible(): TBoolean;
protected
const
GlyphSize = 12;
procedure HasBeenBoundToLayout(); override;
function AddButton(Glyph: TGlyph): TGlyphButton;
procedure SetCaptionButtonVisible(Visible: TBoolean);
procedure UpdateSize();
public
CaptionButton: TGlyphButton;
TabButton: TGlyphButton;
VerticalSplitButton: TGlyphButton;
HorizontalSplitButton: TGlyphButton;
CloseButton: TGlyphButton;
constructor Create(); override;
destructor Destroy(); override;
property CaptionButtonVisible: TBoolean read GetCaptionButtonVisible write SetCaptionButtonVisible;
end;
TPanelInformation = class(TObject)
private
FBounds: TInteger32Rectangle;
FControl: TControl;
FCaptionControl: TSingleLineTextControl;
FButtons: TSplitButtonPanel;
FGrip: TInteger32Rectangle;
procedure SetControl(const Value: TControl);
procedure SetBounds(const Value: TInteger32Rectangle);
procedure AddCaptionControl(Target: TList<TControl>);
procedure UpdateCaptionButton();
procedure LayoutControls();
procedure PaintGrip(Canvas: TCanvas);
procedure PaintEmpty(Canvas: TCanvas);
public
constructor Create(); virtual;
destructor Destroy(); override;
procedure Paint(Canvas: TCanvas);
procedure AddControls(Target: TList<TControl>);
procedure RemoveControls(Target: TList<TControl>);
procedure UpdateControls(Target: TList<TControl>);
property Control: TControl read FControl write SetControl;
property CaptionControl: TSingleLineTextControl read FCaptionControl;
property Buttons: TSplitButtonPanel read FButtons;
property Bounds: TInteger32Rectangle read FBounds write SetBounds;
property Grip: TInteger32Rectangle read FGrip;
end;
TSplitPanelClass = class of TSplitPanel;
TSplitPanel = class(TOpaquePanel)
private
FSplitterRadius: TInteger32;
FMouseOverSplitter: TInteger32;
procedure SetMouseOverSplitter(const Value: TInteger32);
procedure SetSplitterRadius(const Value: TInteger32);
function GetSplitterLocation(Index: TInteger32): TInteger32;
function GetPanelSize(Index: TInteger32): TInteger32;
procedure SetPanelSize(Index: TInteger32; const Value: TInteger32);
function GetControlSize(Index: TInteger32): TInteger32;
procedure SetControlSize(Index: TInteger32; const Value: TInteger32);
function GetResizeWeight(Index: TInteger32): TInteger32;
procedure SetResizeWeight(Index: TInteger32; const Value: TInteger32);
procedure SetPanelCount(const Value: TInteger32);
function GetPanelCount(): TInteger32;
procedure SetPanels(Index: TInteger32; const Value: TControl);
function GetPanels(Index: TInteger32): TControl;
function GetGlueLast(): TBoolean;
procedure SetGlueLast(const Value: TBoolean);
protected
Resizing: TBoolean;
ResizeInformation: TMouseSplitInformation;
PreviousActiveControl: TControl;
PanelSizes: TCumulativeSizes;
PanelInformations: TList<TPanelInformation>;
function MouseSplitInformation(const Position: TInteger32Point): TMouseSplitInformation;
procedure SplitPanelInfo(Index: TInteger32);
function CreatePanelSizes(): TSizableCumulativeSizes;
protected
procedure HasBeenBoundToLayout(); override;
procedure EvenlyDistributeSize(Size: TInteger32);
procedure ConfigurePanelResizeWeight(Index: TInteger32; Control: TControl); virtual;
procedure ConfigurePanelSize(Index: TInteger32; Control: TControl); virtual;
procedure ConfigurePanelSizes();
procedure StartResize(Splitter: TInteger32; const Position: TInteger32Point); virtual;
procedure StopResize(); virtual;
procedure MoveSplitter(Splitter: TInteger32; const Position: TInteger32Point; Inplace: TBoolean); virtual;
procedure ResizeToPreferred(Splitter: TInteger32); virtual;
function MinimalSplitterLocation(Index: TInteger32): TInteger32; virtual;
function MaximalSplitterLocation(Index: TInteger32): TInteger32; virtual;
function SplitterWithLocation(const Position: TInteger32Point): TInteger32; virtual;
function TrailingSize(): TInteger32;
function ExtraPanelSize(Index: TInteger32): TInteger32; virtual;
function PanelWithLocation(const Position: TInteger32Point): TInteger32; virtual;
function CalculatePanelBounds(Index: TInteger32): TInteger32Rectangle; virtual;
function GetSplitCursorForXY(const Position: TInteger32Point): TCursor; virtual;
function GetSplitterRectangle(Splitter: TInteger32): TInteger32Rectangle; virtual;
procedure PaintHighlightedSplitter(Canvas: TCanvas; Splitter: TInteger32);
function GetPanelIndexWithButtonPanel(ButtonPanel: TSplitButtonPanel): TInteger32;
procedure DescendantFiresEvent(Descendant: TControl; Event: TEvent); override;
procedure LayoutPanel(Index: TInteger32);
function GetControlInFirstNonEmptyPanel(): TControl;
property MouseOverSplitter: TInteger32 read FMouseOverSplitter write SetMouseOverSplitter;
public
constructor Create(); override;
destructor Destroy(); override;
procedure Paint(Canvas: TCanvas); override;
function Embellish(): TControl; override;
function Split(Index: TInteger32; SplitPanelClass: TSplitPanelClass): TControl;
function ToggleCaption(Index: TInteger32): TControl;
function ToggleTabPanel(Index: TInteger32): TControl;
procedure ClosePanel(Index: TInteger32);
procedure CloseEmptyPanels();
procedure DeletePanel(Index: TInteger32);
function PanelIndexOf(Control: TControl): TInteger32;
procedure CloseControl(Control: TControl); override;
function DefaultControlToFocus(): TControl; override;
function DefaultControlToNavigate(): TControl; override;
function MouseLeftDown(Event: TMouseButtonEvent): TBoolean; override;
function MouseLeftUp(Event: TMouseButtonEvent): TBoolean; override;
function MouseMove(Event: TMouseMoveEvent): TBoolean; override;
function MouseLeave(Event: TMouseLeaveEvent): TBoolean; override;
function GetCursorForPosition(const Position: TInteger32Point): TCursor; override;
function GetDragControl(const Position: TInteger32Point): TControl; override;
function CreateDragSource(Control: TControl): TDragSite; override;
function CreateDragTarget(Source: TDragSite; const Position: TInteger32Point): TDragSite; override;
function IsDynamicContainer(): TBoolean; override;
property SplitterRadius: TInteger32 read FSplitterRadius write SetSplitterRadius;
property PanelCount: TInteger32 read GetPanelCount write SetPanelCount;
property Panels[Index: TInteger32]: TControl read GetPanels write SetPanels;
property SplitterLocation[Index: TInteger32]: TInteger32 read GetSplitterLocation;
property PanelSize[Index: TInteger32]: TInteger32 read GetPanelSize write SetPanelSize;
property ControlSize[Index: TInteger32]: TInteger32 read GetControlSize write SetControlSize;
property ResizeWeight[Index: TInteger32]: TInteger32 read GetResizeWeight write SetResizeWeight;
property GlueLast: TBoolean read GetGlueLast write SetGlueLast;
end;
TSplitPanelDragSite = class(TDragSite)
protected
SplitPanel: TSplitPanel;
PanelIndex: TInteger32;
public
constructor Create(SplitPanel: TSplitPanel; Control: TControl; PanelIndex: TInteger32); reintroduce; virtual;
procedure Attach(Control: TControl); override;
procedure Detach(); override;
end;
const
ButtonSize: TInteger32 = 9;
MinimalPanelSize: TInteger32 = 25;
implementation
uses
Color.Constants,
Drawing.Fill,
Drawing.Stroke,
Exception,
Exception.NotImplemented,
FloatingPoint._64,
Font.Purpose,
Geometry._2d.FloatingPoint64.Point,
Geometry._2d.FloatingPoint64.Rectangle,
Geometry._2d.Integer32.Size,
Mathematics,
Object_.List,
UserInterface.Control.Event,
UserInterface.Control.Mode,
UserInterface.Control.Panel.FixedSide,
UserInterface.Control.Panel.Paged,
UserInterface.Control.Panel.Split.SingleDimension.Horizontal,
UserInterface.Control.Panel.Split.SingleDimension.Vertical,
UserInterface.Control.Scroll.Panel,
UserInterface.DragAndDrop.Action,
UserInterface.Keyboard.Modifiers;
{ TSplitPanel }
constructor TSplitPanel.Create();
begin
inherited Create();
FMouseOverSplitter := -1;
PanelInformations := TObjectList<TPanelInformation>.Create();
PanelSizes := CreatePanelSizes();
SplitterRadius := 1;
CaptionVisible := False;
GlueLast := True;
end;
function TSplitPanel.CreateDragSource(Control: TControl): TDragSite;
var
PanelIndex: TInteger32;
begin
PanelIndex := PanelIndexOf(Control);
if PanelIndex <> -1 then
begin
Result := TSplitPanelDragSite.Create(Self, Control, PanelIndex);
Result.Actions := [TDragDropAction.Swap, TDragDropAction.Move];
end
else
Result := nil;
end;
function TSplitPanel.CreateDragTarget(Source: TDragSite; const Position: TInteger32Point): TDragSite;
var
SplitInformation: TMouseSplitInformation;
Control: TControl;
begin
Result := nil;
if not Source.Control.HierarchyContainsControl(Self) then
begin
SplitInformation := MouseSplitInformation(Position);
if (SplitInformation.Splitter = -1) and (SplitInformation.Panel <> -1) then
begin
Control := Panels[SplitInformation.Panel];
if Control = nil then
begin
Result := TSplitPanelDragSite.Create(Self, Control, SplitInformation.Panel);
Result.Actions := [TDragDropAction.Move];
end
else if SplitInformation.InGrip and not Panels[SplitInformation.Panel].HierarchyContainsControl(Source.Control) then
begin
if (Source.Container <> Self) or (SplitInformation.Panel <> PanelIndexOf(Source.Control)) then
begin
Result := TSplitPanelDragSite.Create(Self, Control, SplitInformation.Panel);
Result.Actions := [TDragDropAction.Swap];
end;
end;
end;
end;
end;
function TSplitPanel.CreatePanelSizes(): TSizableCumulativeSizes;
begin
Result := TSizableCumulativeSizes.Create();
Result.MinimumSize := 20;
end;
function TSplitPanel.MouseLeftDown(Event: TMouseButtonEvent): TBoolean;
var
SplitInformation: TMouseSplitInformation;
begin
Result := True;
SplitInformation := MouseSplitInformation(Event.Position);
ResizeInformation.Clear();
if IsInlineEditing then
StopInlineEditing(True)
else if SplitInformation.Splitter <> -1 then
begin
if Event.Count = 2 then
ResizeToPreferred(SplitInformation.Splitter)
else
begin
ResizeInformation := SplitInformation;
Resizing := True;
StartResize(SplitInformation.Splitter, Event.Position);
GetMouseManager().ControlWithCapture := Self;
end;
end;
end;
function TSplitPanel.MouseMove(Event: TMouseMoveEvent): TBoolean;
begin
Result := False;
if Resizing then
begin
Result := True;
MoveSplitter(ResizeInformation.Splitter, Event.Position, Event.KeyModifiers * [TKeyModifier.Control] = []);
LayoutControls();
Invalidate();
end
else
MouseOverSplitter := MouseSplitInformation(Event.Position).Splitter;
end;
function TSplitPanel.MouseLeftUp(Event: TMouseButtonEvent): TBoolean;
var
SplitInformation: TMouseSplitInformation;
begin
Result := True;
if not IsInlineEditing then
begin
if Resizing then
begin
Resizing := False;
StopResize();
end;
SplitInformation := MouseSplitInformation(Event.Position);
end;
Invalidate();
end;
procedure TSplitPanel.Paint(Canvas: TCanvas);
var
Panel: TPanelInformation;
begin
inherited Paint(Canvas);
for Panel in PanelInformations do
Panel.Paint(Canvas);
if Resizing then
PaintHighlightedSplitter(Canvas, ResizeInformation.Splitter)
else if MouseOverSplitter <> -1 then
PaintHighlightedSplitter(Canvas, MouseOverSplitter);
end;
procedure TSplitPanel.SetSplitterRadius(const Value: TInteger32);
begin
if Value <> SplitterRadius then
begin
FSplitterRadius := Value;
LayoutControls();
Invalidate();
end;
end;
procedure TSplitPanel.StartResize(Splitter: TInteger32; const Position: TInteger32Point);
begin
end;
function TSplitPanel.GetControlInFirstNonEmptyPanel: TControl;
var
i: TInteger32;
Control: TControl;
begin
Result := nil;
i := 0;
while (Result = nil) and (i < PanelCount) do
begin
Control := PanelInformations[i].Control;
if Control <> nil then
Result := Control;
Inc(i);
end;
end;
function TSplitPanel.GetGlueLast(): TBoolean;
begin
Result := PanelSizes.FixedTotal;
end;
procedure TSplitPanel.SetControlSize(Index: TInteger32; const Value: TInteger32);
begin
if Value <> ControlSize[Index] then
begin
PanelSizes.SetItemSizeAndRedistribute(Index, Value + ExtraPanelSize(Index));
LayoutControls();
Invalidate();
end;
end;
procedure TSplitPanel.SetGlueLast(const Value: TBoolean);
begin
PanelSizes.FixedTotal := Value;
end;
procedure TSplitPanel.SetMouseOverSplitter(const Value: TInteger32);
begin
if Value <> MouseOverSplitter then
begin
if MouseOverSplitter <> -1 then
InvalidateRectangle(GetSplitterRectangle(MouseOverSplitter));
FMouseOverSplitter := Value;
if MouseOverSplitter <> -1 then
InvalidateRectangle(GetSplitterRectangle(MouseOverSplitter));
end;
end;
function TSplitPanel.GetSplitterLocation(Index: TInteger32): TInteger32;
begin
Result := PanelSizes.RunningSize(Index);
end;
procedure TSplitPanel.SetResizeWeight(Index: TInteger32; const Value: TInteger32);
begin
PanelSizes.Weight[Index] := Value;
end;
function TSplitPanel.ToggleCaption(Index: TInteger32): TControl;
var
PanelInformation: TPanelInformation;
begin
PanelInformation := PanelInformations[Index];
Result := PanelInformation.Control;
Result.CaptionVisible := not Result.CaptionVisible;
PanelInformation.UpdateControls(ChildControls);
if IsBoundToLayout() then
LayoutPanel(Index);
Invalidate();
end;
function TSplitPanel.ToggleTabPanel(Index: TInteger32): TControl;
var
Control: TControl;
PagedPanel: TPagedPanel;
FixedTopPanel: TFixedTopPanel;
begin
Control := Panels[Index];
if (Control is TFixedTopPanel) and ((Control as TFixedTopPanel).PanelControl is TPagedPanel) then
begin
FixedTopPanel := Control as TFixedTopPanel;
PagedPanel := FixedTopPanel.PanelControl as TPagedPanel;
if PagedPanel.PageCount <= 1 then
begin
ChildControls.Remove(Control);
if PagedPanel.PageCount = 0 then
Panels[Index] := nil
else
begin
Control := PagedPanel.Pages[0];
PagedPanel.RemovePage(Control);
Panels[Index] := Control;
end;
FixedTopPanel.Free();
end;
end
else
begin
PagedPanel := TPagedPanel.Create();
PagedPanel.CaptionVisible := False;
PagedPanel.IsExplorerTarget := True;
if Control <> nil then
ChildControls.Remove(Control);
Panels[Index] := PagedPanel.Embellish();
if Control <> nil then
PagedPanel.AddPage(Control);
end;
Result := Panels[Index];
end;
function TSplitPanel.TrailingSize(): TInteger32;
begin
Result := SplitterRadius + 1;
end;
function TSplitPanel.MouseSplitInformation(const Position: TInteger32Point): TMouseSplitInformation;
var
Index: TInteger32;
begin
Result.Clear();
Result.Splitter := SplitterWithLocation(Position);
if Result.Splitter = -1 then
begin
Index := PanelWithLocation(Position);
if Index <> -1 then
begin
Result.Panel := Index;
Result.InGrip := PanelInformations[Index].Grip.Contains(Position);
end;
end;
end;
function TSplitPanel.Split(Index: TInteger32; SplitPanelClass: TSplitPanelClass): TControl;
var
SplitPanel: TSplitPanel;
begin
Result := Panels[Index];
if SplitPanelClass = ClassType then
begin
SplitPanelInfo(Index);
LayoutControls();
Invalidate();
end
else
begin
ChildControls.Remove(Result);
SplitPanel := SplitPanelClass.Create();
SplitPanel.PanelCount := 2;
SplitPanel.Panels[0] := Result;
SplitPanel.ResizeWeight[0] := 1;
SplitPanel.ResizeWeight[1] := 1;
Panels[Index] := SplitPanel;
end;
end;
procedure TSplitPanel.ClosePanel(Index: TInteger32);
var
Control: TControl;
ParentSplitPanel: TSplitPanel;
begin
if PanelCount > 0 then
begin
DeletePanel(Index);
if (PanelCount = 1) and (ParentControl is TSplitPanel) then
begin
ParentSplitPanel := ParentControl as TSplitPanel;
Control := Panels[0];
Panels[0] := nil;
ParentSplitPanel.Panels[ParentSplitPanel.PanelIndexOf(Self)] := Control;
Free();
end
else
begin
LayoutControls();
Invalidate();
end;
end;
end;
procedure TSplitPanel.ConfigurePanelResizeWeight(Index: TInteger32; Control: TControl);
begin
end;
procedure TSplitPanel.ConfigurePanelSize(Index: TInteger32; Control: TControl);
begin
end;
procedure TSplitPanel.ConfigurePanelSizes();
var
PanelInformation: TPanelInformation;
Index: TInteger32;
begin
if IsBoundToLayout() then
begin
for Index := 0 to PanelCount - 1 do
begin
PanelInformation := PanelInformations[Index];
LayoutPanel(Index);
if PanelInformation.Control <> nil then
ConfigurePanelSize(Index, PanelInformation.Control);
end;
end;
end;
function TSplitPanel.IsDynamicContainer(): TBoolean;
begin
Result := True;
end;
procedure TSplitPanel.LayoutPanel(Index: TInteger32);
begin
PanelInformations[Index].Bounds := CalculatePanelBounds(Index);
end;
procedure TSplitPanel.HasBeenBoundToLayout();
begin
inherited HasBeenBoundToLayout();
ConfigurePanelSizes();
end;
function TSplitPanel.DefaultControlToFocus(): TControl;
begin
Result := GetControlInFirstNonEmptyPanel();
if Result <> nil then
Result := Result.DefaultControlToFocus();
if Result = nil then
Result := Self;
end;
function TSplitPanel.DefaultControlToNavigate(): TControl;
begin
Result := GetControlInFirstNonEmptyPanel();
if Result <> nil then
Result := Result.DefaultControlToNavigate();
if Result = nil then
Result := Self;
end;
procedure TSplitPanel.DeletePanel(Index: TInteger32);
var
PanelSize: TInteger32;
PanelInformation: TPanelInformation;
begin
PanelSize := PanelSizes.Size(Index);
PanelInformation := PanelInformations[Index];
PanelInformation.RemoveControls(ChildControls);
PanelInformation.Control.Free();
PanelInformations.RemoveAt(Index);
PanelSizes.Remove(Index);
if Index > 0 then
PanelSizes.SetItemSizeAndRedistribute(Index - 1, PanelSizes.Size(Index - 1) + PanelSize, False);
Invalidate();
end;
procedure TSplitPanel.DescendantFiresEvent(Descendant: TControl; Event: TEvent);
var
ButtonPanel: TSplitButtonPanel;
PanelIndex: TInteger32;
begin
if (Descendant is TGlyphButton) and (Descendant.ParentControl is TSplitButtonPanel) and (Event is TControlDefaultActionExecutedEvent) then
begin
ButtonPanel := Descendant.ParentControl as TSplitButtonPanel;
PanelIndex := GetPanelIndexWithButtonPanel(ButtonPanel);
if Descendant = ButtonPanel.TabButton then
ToggleTabPanel(PanelIndex)
else if Descendant = ButtonPanel.CaptionButton then
ToggleCaption(PanelIndex)
else if Descendant = ButtonPanel.VerticalSplitButton then
Split(PanelIndex, TVerticalSplitPanel)
else if Descendant = ButtonPanel.HorizontalSplitButton then
Split(PanelIndex, THorizontalSplitPanel)
else if Descendant = ButtonPanel.CloseButton then
ClosePanel(PanelIndex);
end
else
inherited DescendantFiresEvent(Descendant, Event);
end;
destructor TSplitPanel.Destroy();
begin
PanelInformations.Free();
PanelSizes.Free();
inherited Destroy();
end;
function TSplitPanel.PanelIndexOf(Control: TControl): TInteger32;
var
i: TInteger32;
begin
Result := -1;
i := 0;
while (Result = -1) and (i < PanelInformations.Count) do
if PanelInformations[i].Control = Control then
Result := i
else
Inc(i);
end;
function TSplitPanel.GetPanelCount(): TInteger32;
begin
Result := PanelInformations.Count;
end;
function TSplitPanel.GetPanelIndexWithButtonPanel(ButtonPanel: TSplitButtonPanel): TInteger32;
var
i: TInteger32;
begin
Result := -1;
i := 0;
while (Result = -1) and (i < PanelInformations.Count) do
if PanelInformations[i].Buttons = ButtonPanel then
Result := i
else
Inc(i);
end;
function TSplitPanel.GetDragControl(const Position: TInteger32Point): TControl;
var
SplitInformation: TMouseSplitInformation;
begin
Result := nil;
if not IsInlineEditing then
begin
SplitInformation := MouseSplitInformation(Position);
if SplitInformation.InGrip then
Result := Panels[SplitInformation.Panel];
end;
end;
function TSplitPanel.GetControlSize(Index: TInteger32): TInteger32;
begin
Result := PanelSizes.Size(Index) - ExtraPanelSize(Index);
end;
function TSplitPanel.GetCursorForPosition(const Position: TInteger32Point): TCursor;
var
SplitInformation: TMouseSplitInformation;
begin
SplitInformation := MouseSplitInformation(Position);
Result := CursorManager.Arrow;
if SplitInformation.Splitter <> -1 then
begin
Result := GetSplitCursorForXY(Position);
MouseOverSplitter := SplitInformation.Splitter;
end
else
MouseOverSplitter := -1;
end;
function TSplitPanel.GetPanels(Index: TInteger32): TControl;
begin
Result := PanelInformations[Index].Control;
end;
procedure TSplitPanel.SetPanels(Index: TInteger32; const Value: TControl);
var
BoundToLayout: TBoolean;
PanelInformation: TPanelInformation;
begin
BoundToLayout := IsBoundToLayout();
PanelInformation := PanelInformations[Index];
PanelInformation.RemoveControls(ChildControls);
if Value <> nil then
begin
PanelInformation.Control := Value.Embellish();
if not BoundToLayout then
ConfigurePanelResizeWeight(Index, PanelInformation.Control);
end
else
PanelInformation.Control := nil;
PanelInformation.AddControls(ChildControls);
if BoundToLayout then
LayoutPanel(Index);
Invalidate();
end;
procedure TSplitPanel.SetPanelSize(Index: TInteger32; const Value: TInteger32);
begin
if Value <> PanelSize[Index] then
begin
PanelSizes.SetItemSizeAndRedistribute(Index, Value);
LayoutControls();
Invalidate();
end;
end;
procedure TSplitPanel.SetPanelCount(const Value: TInteger32);
var
Index: TInteger32;
PanelInformation: TPanelInformation;
begin
for Index := Value to PanelCount - 1 do
if PanelInformations[Index].Control <> nil then
ChildControls.Remove(PanelInformations[Index].Control);
for Index := 1 to Value - PanelCount do
begin
PanelInformation := TPanelInformation.Create();
PanelInformation.AddControls(ChildControls);
PanelInformations.Add(PanelInformation);
end;
PanelSizes.Count := Value;
end;
procedure TSplitPanel.SplitPanelInfo(Index: TInteger32);
var
Size: TInteger32;
HalfSize: TInteger32;
PanelInformation: TPanelInformation;
begin
Size := PanelSize[Index];
HalfSize := Size div 2;
PanelInformation := TPanelInformation.Create();
PanelInformation.AddControls(ChildControls);
PanelInformations.AddAt(Index + 1, PanelInformation);
PanelSizes.Insert(Index + 1, 0);
PanelSizes.SetItemSizeAndRedistribute(Index + 1, HalfSize, False);
PanelSizes.SetItemSizeAndRedistribute(Index, Size - HalfSize, False);
end;
procedure TSplitPanel.EvenlyDistributeSize(Size: TInteger32);
var
LocationDistance: TFloatingPoint64;
CurrentLocation: TFloatingPoint64;
Index: TInteger32;
begin
if Size > 0 then
begin
LocationDistance := (Size - TrailingSize()) / PanelCount;
CurrentLocation := 0;
PanelSizes.SetItemSize(0, RoundToNearest(LocationDistance), False);
for Index := 1 to PanelCount - 1 do
begin
CurrentLocation := CurrentLocation + LocationDistance;
PanelSizes.SetItemSize(Index, RoundToNearest(CurrentLocation - PanelSizes.RunningSize(Index - 1)), False);
end;
PanelSizes.SetTotalSize(Size - TrailingSize(), TDeltaSizeMethod.LastColumn);
LayoutControls();
end;
end;
function TSplitPanel.ExtraPanelSize(Index: TInteger32): TInteger32;
begin
Result := 0;
end;
function TSplitPanel.MaximalSplitterLocation(Index: TInteger32): TInteger32;
begin
raise ENotImplemented.Create(ClassType, 'MaximalSplitterLocation');
end;
function TSplitPanel.MinimalSplitterLocation(Index: TInteger32): TInteger32;
begin
raise ENotImplemented.Create(ClassType, 'MinimalSplitterLocation');
end;
procedure TSplitPanel.MoveSplitter(Splitter: TInteger32; const Position: TInteger32Point; Inplace: TBoolean);
begin
end;
function TSplitPanel.CalculatePanelBounds(Index: TInteger32): TInteger32Rectangle;
begin
raise ENotImplemented.Create(ClassType, 'CalculatePanelBounds');
end;
function TSplitPanel.GetPanelSize(Index: TInteger32): TInteger32;
begin
Result := PanelSizes.Size(Index);
end;
function TSplitPanel.GetResizeWeight(Index: TInteger32): TInteger32;
begin
Result := PanelSizes.Weight[Index];
end;
function TSplitPanel.PanelWithLocation(const Position: TInteger32Point): TInteger32;
begin
raise ENotImplemented.Create(ClassType, 'PanelWithLocation');
end;
procedure TSplitPanel.ResizeToPreferred(Splitter: TInteger32);
begin
end;
function TSplitPanel.SplitterWithLocation(const Position: TInteger32Point): TInteger32;
begin
raise EException.Create('SplitterWithLocation should be implemented for class ''' + ClassName + '''!');
end;
function TSplitPanel.GetSplitCursorForXY(const Position: TInteger32Point): TCursor;
begin
raise EException.Create('GetSplitCursorForXY should be implemented for class ''' + ClassName + '''!');
end;
procedure TSplitPanel.CloseControl(Control: TControl);
begin
ClosePanel(PanelIndexOf(Control));
end;
procedure TSplitPanel.CloseEmptyPanels();
var
i: TInteger32;
begin
for i := PanelCount - 1 downto 0 do
if Panels[i] = nil then
ClosePanel(i);
end;
procedure TSplitPanel.StopResize();
begin
end;
function TSplitPanel.Embellish(): TControl;
var
ScrollPanel: TScrollPanel;
begin
ScrollPanel := TScrollPanel.Create();
ScrollPanel.Panel[TInteger32Point.New(0, 0)] := Self;
Result := ScrollPanel;
end;
procedure TSplitPanel.PaintHighlightedSplitter(Canvas: TCanvas; Splitter: TInteger32);
var
Rectangle: T2dFloatingPoint64Rectangle;
begin
Rectangle := T2dFloatingPoint64Rectangle.New(GetSplitterRectangle(Splitter)).Offset(T2dFloatingPoint64Point.New(0.5, 0.5));
Canvas.Fill := TFill.Create(TPurposeColor.FocusedSelection);
Canvas.FillRectangle(Rectangle);
if (Splitter = PanelCount - 1) and GlueLast then
Canvas.Stroke := TStroke.Create(TNamedColor.MediumGreen, 1)
else
Canvas.Stroke := TStroke.Create(TNamedColor.Blue, 1);
Canvas.DrawRectangle(Rectangle);
end;
function TSplitPanel.MouseLeave(Event: TMouseLeaveEvent): TBoolean;
begin
Result := True;
MouseOverSplitter := -1;
end;
function TSplitPanel.GetSplitterRectangle(Splitter: TInteger32): TInteger32Rectangle;
begin
Result := TInteger32Rectangle.New(0, 0, 0, 0);
end;
{ TPanelInformation }
procedure TPanelInformation.AddCaptionControl(Target: TList<TControl>);
begin
CaptionControl.Text := Control.Caption;
Target.Add(CaptionControl);
end;
procedure TPanelInformation.AddControls(Target: TList<TControl>);
begin
if Control <> nil then
begin
Target.Add(Control);
if Control.CaptionVisible then
AddCaptionControl(Target);
end
else
Target.Add(Buttons);
UpdateCaptionButton();
end;
constructor TPanelInformation.Create();
begin
inherited Create();
FButtons := TSplitButtonPanel.Create();
FCaptionControl := TSingleLineTextControl.Create();
FCaptionControl.AllowedModes := [TControlMode.Display];
FCaptionControl.IsEditor := True;
FCaptionControl.Focusability := TFocusability.None;
FCaptionControl.Font := TPurposeFont.SmallCaption;
end;
destructor TPanelInformation.Destroy();
begin
Buttons.Free();
CaptionControl.Free();
inherited Destroy();
end;
procedure TPanelInformation.LayoutControls();
var
CurrentTop: TInteger32;
begin
if Control <> nil then
begin
if Control.CaptionVisible then
begin
FGrip := TInteger32Rectangle.New(
Bounds.TopLeft,
TInteger32Size.New(Bounds.Width, CaptionControl.GetPreferredSize(TInteger32Size.Maximum).Height + 8)
);
CaptionControl.Bounds := Grip.Inset(TInteger32Rectangle.New(5, 2, 5, 2));
CurrentTop := Grip.Bottom + 1;
end
else
begin
FGrip := TInteger32Rectangle.Null;
CurrentTop := Bounds.Top;
end;
Control.Bounds := TInteger32Rectangle.New(Bounds.Left, CurrentTop, Bounds.Right, Bounds.Bottom);
Buttons.Bounds := TInteger32Rectangle.New(
TInteger32Point.New(Bounds.Right - Buttons.Width, Bounds.Top + (Grip.Height - Buttons.Height) div 2),
Buttons.Size
);
end
else
begin
FGrip := TInteger32Rectangle.Null;
Buttons.Bounds := TInteger32Rectangle.New(
TInteger32Point.New(Bounds.Right - Buttons.Width - 4, Bounds.Top + 4),
Buttons.Size
);
end;
end;
procedure TPanelInformation.Paint(Canvas: TCanvas);
begin
if Control <> nil then
PaintGrip(Canvas)
else
PaintEmpty(Canvas);
end;
procedure TPanelInformation.PaintEmpty(Canvas: TCanvas);
begin
Canvas.Stroke := TStroke.Create(TNamedColor.Black, 1);
Canvas.DrawRectangle(T2dFloatingPoint64Rectangle.New(Bounds).Offset(T2dFloatingPoint64Point.New(0.5, 0.5)));
end;
procedure TPanelInformation.PaintGrip(Canvas: TCanvas);
var
CaptionRectangle: T2dFloatingPoint64Rectangle;
begin
if Control.CaptionVisible then
begin
CaptionRectangle := T2dFloatingPoint64Rectangle.New(Control.Left, Bounds.Top, Control.Bounds.Right, Control.Top - 2).Offset(T2dFloatingPoint64Point.New(0.5, 0.5));
Canvas.Stroke := TStroke.Create(TPurposeColor.GripBorder, 1);
Canvas.DrawRectangle(CaptionRectangle);
end;
end;
procedure TPanelInformation.RemoveControls(Target: TList<TControl>);
begin
if Control <> nil then
begin
if Control.CaptionVisible then
Target.Remove(CaptionControl);
Target.Remove(Control);
end
else
Target.Remove(Buttons);
end;
procedure TPanelInformation.SetBounds(const Value: TInteger32Rectangle);
begin
FBounds := Value;
LayoutControls();
end;
procedure TPanelInformation.SetControl(const Value: TControl);
begin
FControl := Value;
end;
procedure TPanelInformation.UpdateCaptionButton();
var
Glyph: TGlyph;
begin
if Control <> nil then
begin
if Control.CaptionVisible then
Glyph := TGlyph.UpwardTriangle
else
Glyph := TGlyph.DownwardTriangle;
Buttons.CaptionButton.Glyph := Glyph;
end;
Buttons.SetCaptionButtonVisible(Control <> nil);
end;
procedure TPanelInformation.UpdateControls(Target: TList<TControl>);
begin
if (Control <> nil) and Control.CaptionVisible then
AddCaptionControl(Target)
else
Target.Remove(CaptionControl);
UpdateCaptionButton();
end;
{ TSplitButtonPanel }
function TSplitButtonPanel.AddButton(Glyph: TGlyph): TGlyphButton;
begin
Result := TGlyphButton.Create();
Result.Glyph := Glyph;
Result.GlyphSize := GlyphSize;
Result.FocusAbility := TFocusability.None;
AddControl(Result);
end;
constructor TSplitButtonPanel.Create();
begin
inherited Create();
CaptionButton := AddButton(TGlyph.DownwardTriangle);
TabButton := AddButton(TGlyph.Square);
VerticalSplitButton := AddButton(TGlyph.HorizontalBar);
HorizontalSplitButton := AddButton(TGlyph.VerticalBar);
CloseButton := AddButton(TGlyph.Cross);
SetCaptionButtonVisible(False);
end;
destructor TSplitButtonPanel.Destroy();
begin
if not CaptionButtonVisible then
CaptionButton.Free();
inherited Destroy();
end;
function TSplitButtonPanel.GetCaptionButtonVisible(): TBoolean;
begin
Result := ChildControls[0] = CaptionButton;
end;
procedure TSplitButtonPanel.HasBeenBoundToLayout();
begin
inherited HasBeenBoundToLayout();
UpdateSize();
end;
procedure TSplitButtonPanel.SetCaptionButtonVisible(Visible: TBoolean);
begin
if Visible and not CaptionButtonVisible then
ChildControls.AddAt(0, CaptionButton)
else if not Visible and CaptionButtonVisible then
ChildControls.Remove(CaptionButton);
UpdateSize();
end;
procedure TSplitButtonPanel.UpdateSize();
begin
if IsBoundToLayout() then
Size := GetPreferredSize(TInteger32Size.Maximum);
end;
{ TMouseSplitInformation }
procedure TMouseSplitInformation.Clear();
begin
Splitter := -1;
Panel := -1;
InGrip := False;
end;
{ TSplitPanelDragSite }
procedure TSplitPanelDragSite.Attach(Control: TControl);
begin
SplitPanel.Panels[PanelIndex] := Control;
end;
constructor TSplitPanelDragSite.Create(SplitPanel: TSplitPanel; Control: TControl; PanelIndex: TInteger32);
begin
inherited Create(SplitPanel, Control);
Self.SplitPanel := SplitPanel;
Self.PanelIndex := PanelIndex;
end;
procedure TSplitPanelDragSite.Detach();
begin
SplitPanel.Panels[PanelIndex] := nil;
end;
end.
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