jvcllaz: Add JvSpecialProgress

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@6294 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
wp_xxyyzz
2018-04-08 11:27:52 +00:00
parent bd7f427964
commit 7eadb2c7d2
12 changed files with 1291 additions and 0 deletions

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tjvspecialprogress.bmp

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lazres ../../../resource/jvmmreg.res @images.txt

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unit JvMMReg;
{$mode objfpc}{$H+}
interface
uses
SysUtils;
procedure Register;
implementation
{$R ../../resource/jvmmreg.res}
uses
Classes, JvDsgnConsts,
PropEdits, Controls,
JvSpecialProgress;
procedure Register;
begin
RegisterComponents(RsPaletteJvcl, [
TJvSpecialProgress
]);
end;
end.

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object MainForm: TMainForm
Left = 258
Height = 340
Top = 127
Width = 459
Caption = 'JvSpecialProgress Demo'
ClientHeight = 340
ClientWidth = 459
OnCreate = FormCreate
LCLVersion = '1.9.0.0'
object Bevel1: TBevel
Left = 20
Height = 44
Top = 12
Width = 176
end
object JvSpecialProgress1: TJvSpecialProgress
Left = 32
Height = 15
Top = 24
Width = 150
Caption = 'JvSpecialProgress1'
Position = 50
end
object ScrollBar1: TScrollBar
Left = 31
Height = 17
Top = 88
Width = 150
PageSize = 0
TabOrder = 0
OnChange = ScrollBar1Change
end
object CbStartColor: TColorBox
Left = 328
Height = 22
Top = 22
Width = 100
Style = [cbStandardColors, cbExtendedColors, cbSystemColors, cbPrettyNames]
ItemHeight = 16
OnChange = CbStartColorChange
TabOrder = 1
end
object Label1: TLabel
Left = 245
Height = 15
Top = 26
Width = 57
Caption = 'Start color:'
ParentColor = False
end
object Label2: TLabel
Left = 245
Height = 15
Top = 60
Width = 57
Caption = 'Start color:'
ParentColor = False
end
object CbEndColor: TColorBox
Left = 328
Height = 22
Top = 56
Width = 100
Style = [cbStandardColors, cbExtendedColors, cbSystemColors, cbPrettyNames]
ItemHeight = 16
OnChange = CbEndColorChange
TabOrder = 2
end
object CbGradientBlocks: TCheckBox
Left = 245
Height = 19
Top = 96
Width = 102
Caption = 'Gradient blocks'
OnChange = CbGradientBlocksChange
TabOrder = 3
end
object CbSolid: TCheckBox
Left = 245
Height = 19
Top = 128
Width = 46
Caption = 'Solid'
OnChange = CbSolidChange
TabOrder = 4
end
object CbBorder: TCheckBox
Left = 245
Height = 19
Top = 159
Width = 55
Caption = 'Border'
OnChange = CbBorderChange
TabOrder = 5
end
object Label3: TLabel
Left = 31
Height = 15
Top = 64
Width = 128
Caption = 'Please drag the scrollbar'
ParentColor = False
end
object CbBorderColor: TColorBox
Left = 328
Height = 22
Top = 166
Width = 100
Style = [cbStandardColors, cbExtendedColors, cbSystemColors, cbPrettyNames]
ItemHeight = 16
OnChange = CbBorderColorChange
TabOrder = 6
end
object CbFlat: TCheckBox
Left = 245
Height = 19
Top = 176
Width = 39
Caption = 'Flat'
OnChange = CbFlatChange
TabOrder = 7
end
object CbTextOption: TComboBox
Left = 328
Height = 23
Top = 208
Width = 100
ItemHeight = 15
Items.Strings = (
'toCaption'
'toFormat'
'toNoText'
'toPercent'
)
OnChange = CbTextOptionChange
TabOrder = 8
Text = 'CbTextOption'
end
object Label4: TLabel
Left = 245
Height = 15
Top = 212
Width = 62
Caption = 'Text option:'
ParentColor = False
end
object CbTextCentered: TCheckBox
Left = 245
Height = 19
Top = 296
Width = 91
Caption = 'Text centered'
OnChange = CbTextCenteredChange
TabOrder = 9
end
object EdFormat: TEdit
Left = 328
Height = 23
Top = 236
Width = 100
TabOrder = 10
Text = '%d%% done.'
end
object LblFormat: TLabel
Left = 247
Height = 15
Top = 240
Width = 38
Caption = 'Format'
FocusControl = EdFormat
ParentColor = False
end
object CbTextColor: TColorBox
Left = 328
Height = 22
Top = 264
Width = 100
Style = [cbStandardColors, cbExtendedColors, cbSystemColors, cbPrettyNames]
ItemHeight = 16
OnChange = CbTextColorChange
TabOrder = 11
end
object Label5: TLabel
Left = 245
Height = 15
Top = 268
Width = 54
Caption = 'Text color:'
ParentColor = False
end
end

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unit main;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, StdCtrls, ColorBox,
ExtCtrls, JvSpecialProgress;
type
{ TMainForm }
TMainForm = class(TForm)
Bevel1: TBevel;
CbBorderColor: TColorBox;
CbTextColor: TColorBox;
CbTextCentered: TCheckBox;
CbStartColor: TColorBox;
CbEndColor: TColorBox;
CbGradientBlocks: TCheckBox;
CbSolid: TCheckBox;
CbBorder: TCheckBox;
CbFlat: TCheckBox;
CbTextOption: TComboBox;
EdFormat: TEdit;
JvSpecialProgress1: TJvSpecialProgress;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Label5: TLabel;
LblFormat: TLabel;
ScrollBar1: TScrollBar;
procedure CbBorderChange(Sender: TObject);
procedure CbBorderColorChange(Sender: TObject);
procedure CbTextColorChange(Sender: TObject);
procedure CbEndColorChange(Sender: TObject);
procedure CbFlatChange(Sender: TObject);
procedure CbGradientBlocksChange(Sender: TObject);
procedure CbSolidChange(Sender: TObject);
procedure CbStartColorChange(Sender: TObject);
procedure CbTextCenteredChange(Sender: TObject);
procedure CbTextOptionChange(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure ScrollBar1Change(Sender: TObject);
private
FSavedCaption: String;
public
end;
var
MainForm: TMainForm;
implementation
{$R *.lfm}
{ TMainForm }
procedure TMainForm.ScrollBar1Change(Sender: TObject);
begin
JvSpecialProgress1.Position := Scrollbar1.Position;
end;
procedure TMainForm.FormCreate(Sender: TObject);
begin
FSavedCaption := JvSpecialProgress1.Caption;
Scrollbar1.Position := JvSpecialProgress1.Position;
CbStartColor.Selected := JvSpecialProgress1.StartColor;
CbEndcolor.Selected := JvSpecialProgress1.EndColor;
CbGradientBlocks.Checked := JvSpecialProgress1.GradientBlocks;
CbSolid.Checked := JvSpecialProgress1.Solid;
CbBorder.Checked := JvSpecialProgress1.BorderStyle <> bsNone;
CbBorderColor.Selected := JvSpecialProgress1.BorderColor;
CbFlat.Checked := JvSpecialProgress1.Flat;
CbFlat.Enabled := CbBorder.Checked;
CbBorderColor.Visible := CbBorder.Checked and CbFlat.Checked;
CbTextOption.ItemIndex := Ord(JvSpecialProgress1.TextOption);
CbTextCentered.Checked := JvSpecialProgress1.TextCentered;
if JvSpecialProgress1.Font.Color = clDefault then
CbTextColor.Selected := GetDefaultColor(dctFont)
else
CbTextColor.Selected := JvSpecialProgress1.Font.Color;
end;
procedure TMainForm.CbStartColorChange(Sender: TObject);
begin
JvSpecialProgress1.StartColor := CbStartColor.Selected;
end;
procedure TMainForm.CbTextCenteredChange(Sender: TObject);
begin
JvSpecialProgress1.TextCentered := CbTextCentered.Checked;
end;
procedure TMainForm.CbTextOptionChange(Sender: TObject);
begin
JvSpecialProgress1.TextOption := TJvTextOption(CbTextOption.ItemIndex);
if JvSpecialProgress1.TextOption = toFormat then
JvSpecialProgress1.Caption := EdFormat.Text
else
JvSpecialProgress1.Caption := FSavedCaption;
end;
procedure TMainForm.CbEndColorChange(Sender: TObject);
begin
JvSpecialProgress1.EndColor := CbEndColor.Selected;
end;
procedure TMainForm.CbFlatChange(Sender: TObject);
begin
JvSpecialProgress1.Flat := CbFlat.Checked;
CbBorderColor.Visible := CbBorder.Checked and CbFlat.Checked;
end;
procedure TMainForm.CbBorderChange(Sender: TObject);
begin
if CbBorder.Checked then
JvSpecialProgress1.BorderStyle := bsSingle
else
JvSpecialProgress1.Borderstyle := bsNone;
CbFlat.Enabled := CbBorder.Checked;
CbBorderColor.Visible := CbBorder.Checked and CbFlat.Checked;
end;
procedure TMainForm.CbBorderColorChange(Sender: TObject);
begin
JvSpecialProgress1.BorderColor := CbBorderColor.Selected;
end;
procedure TMainForm.CbTextColorChange(Sender: TObject);
begin
JvSpecialProgress1.Font.Color := CbTextColor.Selected;
end;
procedure TMainForm.CbGradientBlocksChange(Sender: TObject);
begin
JvSpecialProgress1.GradientBlocks := CbGradientBlocks.Checked;
end;
procedure TMainForm.CbSolidChange(Sender: TObject);
begin
JvSpecialProgress1.Solid := CbSolid.Checked;
end;
end.

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<?xml version="1.0" encoding="UTF-8"?>
<CONFIG>
<ProjectOptions>
<Version Value="11"/>
<PathDelim Value="\"/>
<General>
<SessionStorage Value="InProjectDir"/>
<MainUnit Value="0"/>
<Title Value="specialprogress_demo"/>
<Scaled Value="True"/>
<ResourceType Value="res"/>
<UseXPManifest Value="True"/>
<XPManifest>
<DpiAware Value="True"/>
</XPManifest>
<Icon Value="0"/>
</General>
<BuildModes Count="1">
<Item1 Name="Default" Default="True"/>
</BuildModes>
<PublishOptions>
<Version Value="2"/>
</PublishOptions>
<RunParams>
<FormatVersion Value="2"/>
<Modes Count="0"/>
</RunParams>
<RequiredPackages Count="2">
<Item1>
<PackageName Value="JvMMLazR"/>
</Item1>
<Item2>
<PackageName Value="LCL"/>
</Item2>
</RequiredPackages>
<Units Count="2">
<Unit0>
<Filename Value="specialprogress_demo.lpr"/>
<IsPartOfProject Value="True"/>
</Unit0>
<Unit1>
<Filename Value="main.pas"/>
<IsPartOfProject Value="True"/>
<ComponentName Value="MainForm"/>
<HasResources Value="True"/>
<ResourceBaseClass Value="Form"/>
</Unit1>
</Units>
</ProjectOptions>
<CompilerOptions>
<Version Value="11"/>
<PathDelim Value="\"/>
<Target>
<Filename Value="specialprogress_demo"/>
</Target>
<SearchPaths>
<IncludeFiles Value="$(ProjOutDir)"/>
<UnitOutputDirectory Value="lib\$(TargetCPU)-$(TargetOS)"/>
</SearchPaths>
<Linking>
<Options>
<Win32>
<GraphicApplication Value="True"/>
</Win32>
</Options>
</Linking>
</CompilerOptions>
<Debugging>
<Exceptions Count="3">
<Item1>
<Name Value="EAbort"/>
</Item1>
<Item2>
<Name Value="ECodetoolError"/>
</Item2>
<Item3>
<Name Value="EFOpenError"/>
</Item3>
</Exceptions>
</Debugging>
</CONFIG>

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program specialprogress_demo;
{$mode objfpc}{$H+}
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
Interfaces, // this includes the LCL widgetset
Forms, main
{ you can add units after this };
{$R *.res}
begin
RequireDerivedFormResource:=True;
Application.Scaled:=True;
Application.Initialize;
Application.CreateForm(TMainForm, MainForm);
Application.Run;
end.

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<?xml version="1.0" encoding="UTF-8"?>
<CONFIG>
<Package Version="4">
<PathDelim Value="\"/>
<Name Value="JvMMLazD"/>
<Type Value="DesignTime"/>
<Author Value="Various authors - see header of each unit for original author."/>
<CompilerOptions>
<Version Value="11"/>
<PathDelim Value="\"/>
<SearchPaths>
<OtherUnitFiles Value="..\design\JvMM"/>
<UnitOutputDirectory Value="lib\$(TargetCPU)-$(TargetOS)\"/>
</SearchPaths>
</CompilerOptions>
<Files Count="1">
<Item1>
<Filename Value="..\design\JvMM\jvmmreg.pas"/>
<HasRegisterProc Value="True"/>
<UnitName Value="JvMMReg"/>
</Item1>
</Files>
<RequiredPkgs Count="4">
<Item1>
<PackageName Value="JvCoreLazD"/>
</Item1>
<Item2>
<PackageName Value="IDEIntf"/>
</Item2>
<Item3>
<PackageName Value="JvMMLazR"/>
</Item3>
<Item4>
<PackageName Value="FCL"/>
</Item4>
</RequiredPkgs>
<UsageOptions>
<UnitPath Value="$(PkgOutDir)"/>
</UsageOptions>
<PublishOptions>
<Version Value="2"/>
</PublishOptions>
</Package>
</CONFIG>

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<?xml version="1.0" encoding="UTF-8"?>
<CONFIG>
<Package Version="4">
<PathDelim Value="\"/>
<Name Value="JvMMLazR"/>
<Author Value="Various authors - see header of each unit for original author."/>
<CompilerOptions>
<Version Value="11"/>
<PathDelim Value="\"/>
<SearchPaths>
<OtherUnitFiles Value="..\run\JvMM"/>
<UnitOutputDirectory Value="lib\$(TargetCPU)-$(TargetOS)\"/>
</SearchPaths>
</CompilerOptions>
<Description Value="JVCL Multimedia Components (Runtime)."/>
<License Value="The JVCL is released in accordance with the MPL 1.1 license. To get your own copy or read it, go to http://www.mozilla.org/MPL/MPL-1.1.html. "/>
<Version Major="1" Release="4"/>
<Files Count="1">
<Item1>
<Filename Value="..\run\JvMM\JvSpecialProgress.pas"/>
<UnitName Value="JvSpecialProgress"/>
</Item1>
</Files>
<RequiredPkgs Count="2">
<Item1>
<PackageName Value="JvCoreLazR"/>
</Item1>
<Item2>
<PackageName Value="FCL"/>
</Item2>
</RequiredPkgs>
<UsageOptions>
<UnitPath Value="$(PkgOutDir)"/>
</UsageOptions>
<PublishOptions>
<Version Value="2"/>
</PublishOptions>
</Package>
</CONFIG>

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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/MPL-1.1.html
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
the specific language governing rights and limitations under the License.
The Original Code is: JvSpecialProgress.PAS, released on 2001-02-28.
The Initial Developer of the Original Code is S�bastien Buysse [sbuysse att buypin dott com]
Portions created by S�bastien Buysse are Copyright (C) 2001 S�bastien Buysse.
All Rights Reserved.
Contributor(s):
Michael Beck [mbeck att bigfoot dott com].
[eldorado]
You may retrieve the latest version of this file at the Project JEDI home page,
located at http://www.delphi-jedi.org
Known Issues:
-----------------------------------------------------------------------------}
// $Id$
unit JvSpecialProgress;
{$mode objfpc}{$H+}
interface
uses
LCLIntf, LCLType, SysUtils, Classes, Graphics, Controls, Forms, ExtCtrls, // for Frame3D
JvComponent;
type
TJvTextOption = (toCaption, toFormat, toNoText, toPercent);
TJvSpecialProgress = class(TJvGraphicControl)
private
FBorderColor: TColor;
FBorderStyle: TBorderStyle;
FEndColor: TColor;
FFlat: Boolean;
FGradientBlocks: Boolean;
FMaximum: Integer;
FMinimum: Integer;
FPosition: Integer;
FSolid: Boolean;
FStartColor: TColor;
FStep: Integer;
FTextCentered: Boolean;
FTextOption: TJvTextOption;
FBuffer: TBitmap;
FBlock: Integer;
{ FIsChanged indicates if the buffer needs to be redrawn }
FIsChanged: Boolean;
FStart: TColor;
FEnd: TColor;
{ If Solid = False then the values of the following vars are valid: }
{ FBlockCount is # of blocks }
FBlockCount: Integer;
{ FBlockWidth is length of block in pixels + 1 (seperator) }
FBlockWidth: Integer;
{ FLastBlockPartial indicates whether the last block is of length
FBlockWidth; if FLastBlockPartial is True the progressbar is totally
filled and the last block is *not* of length FBlockWidth, but of
length FLastBlockWidth; if FLastBlockPartial is False the progressbar
is not totally filled or the last block is of length FBlockWidth }
FLastBlockPartial: Boolean;
{ FLastBlockWidth specifies the length of the last block if the
progressbar is totally filled, note: *not* +1 for seperator }
FLastBlockWidth: Integer;
function GetPercentDone: Longint;
procedure SetBorderColor(const Value: TColor);
procedure SetBorderStyle(const Value: TBorderStyle);
procedure SetEndColor(const Value: TColor);
procedure SetFlat(const Value: Boolean);
procedure SetGradientBlocks(const Value: Boolean);
procedure SetMaximum(const Value: Integer);
procedure SetMinimum(const Value: Integer);
procedure SetPosition(const Value: Integer);
procedure SetSolid(const Value: Boolean);
procedure SetStartColor(const Value: TColor);
procedure SetTextCentered(const Value: Boolean);
procedure SetTextOption(const Value: TJvTextOption);
procedure PaintRectangle;
procedure PaintNonSolid;
procedure PaintSolid;
procedure DoEraseBackground;
procedure PaintText;
protected
function ColorOrDefaultColor: TColor;
procedure Paint; override;
procedure Loaded; override;
procedure ColorChanged; override;
procedure FontChanged; override;
procedure TextChanged; override;
procedure UpdateBuffer;
procedure UpdateBlock;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure StepIt;
property PercentDone: Longint read GetPercentDone;
published
property Align;
property Anchors;
property BorderColor: TColor read FBorderColor write SetBorderColor default clWindowFrame;
property BorderSpacing;
property BorderStyle: TBorderStyle read FBorderStyle write SetBorderStyle default bsNone;
property Caption;
property Color;
property EndColor: TColor read FEndColor write SetEndColor default clBlack;
property Flat: Boolean read FFlat write SetFlat default true;
property Font;
property GradientBlocks: Boolean read FGradientBlocks write SetGradientBlocks default False;
property HintColor;
property Maximum: Integer read FMaximum write SetMaximum default 100;
property Minimum: Integer read FMinimum write SetMinimum default 0;
property ParentColor;
property ParentFont;
property Position: Integer read FPosition write SetPosition default 0;
property ShowHint;
property Solid: Boolean read FSolid write SetSolid default False;
property StartColor: TColor read FStartColor write SetStartColor default clWhite;
property Step: Integer read FStep write FStep default 10;
property TextCentered: Boolean read FTextCentered write SetTextCentered default False;
property TextOption: TJvTextOption read FTextOption write SetTextOption default toNoText;
property Visible;
property OnClick;
property OnDblClick;
property OnDragOver;
property OnDragDrop;
property OnEndDock;
property OnStartDock;
property OnEndDrag;
property OnMouseDown;
property OnMouseMove;
property OnMouseUp;
property OnResize;
property OnStartDrag;
property OnMouseEnter;
property OnMouseLeave;
property OnParentColorChange;
end;
implementation
constructor TJvSpecialProgress.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FBuffer := TBitmap.Create;
ControlStyle := ControlStyle + [csOpaque]; // SMM 20020604
FBorderColor := clWindowFrame;
FBorderStyle := bsNone;
FMaximum := 100;
FMinimum := 0;
FStartColor := clWhite;
FStart := clWhite;
FEndColor := clBlack;
FEnd := clBlack;
FFlat := true;
FPosition := 0;
FSolid := False;
FTextOption := toNoText;
FTextCentered := False;
FGradientBlocks := False;
FStep := 10;
Width := 150;
Height := 15;
FIsChanged := True;
end;
destructor TJvSpecialProgress.Destroy;
begin
FBuffer.Free;
inherited Destroy;
end;
procedure TJvSpecialProgress.ColorChanged;
begin
//inherited ColorChanged; calls CM_COLORCHANGED in VCL
{ No need to call inherited; Repaint is called in UpdateBuffer }
FIsChanged := True;
UpdateBuffer;
end;
procedure TJvSpecialProgress.FontChanged;
begin
//inherited FontChanged; calls CM_COLORCHANGED in VCL
{ No need to call inherited; Repaint is called in UpdateBuffer }
FBuffer.Canvas.Font := Font;
{ Only update if text is visible }
if TextOption = toNoText then
Exit;
FIsChanged := True;
UpdateBuffer;
end;
function TJvSpecialProgress.ColorOrDefaultColor: TColor;
begin
if Color = clDefault then
Result := GetDefaultColor(dctBrush)
else
Result := Color;
end;
procedure TJvSpecialProgress.TextChanged;
begin
if TextOption in [toCaption, toFormat] then
begin
FIsChanged := True;
UpdateBuffer;
end;
inherited TextChanged;
end;
function TJvSpecialProgress.GetPercentDone: Longint;
begin
if FMaximum - FMinimum = 0 then
Result := 0
else
Result := MulDiv(FPosition - FMinimum, 100, FMaximum - FMinimum);
end;
procedure TJvSpecialProgress.Loaded;
begin
inherited Loaded;
UpdateBlock;
UpdateBuffer;
end;
procedure TJvSpecialProgress.Paint;
begin
if (FBuffer.Width <> ClientWidth) or (FBuffer.Height <> ClientHeight) then
begin
FIsChanged := True;
UpdateBlock;
UpdateBuffer;
end;
if (ClientWidth > 2) and (ClientHeight > 2) then
begin
BitBlt(Canvas.Handle, 0, 0, ClientWidth, ClientHeight,
FBuffer.Canvas.Handle, 0, 0, SRCCOPY);
end;
end;
procedure TJvSpecialProgress.DoEraseBackground;
begin
if FBlock >= ClientWidth - 2 then
Exit;
FBuffer.Canvas.Brush.Color := ColorOrDefaultColor;
FBuffer.Canvas.Brush.Style := bsSolid;
FBuffer.Canvas.FillRect(Rect(FBlock + 1, 1, ClientWidth - 1, ClientHeight - 1));
end;
procedure TJvSpecialProgress.PaintNonSolid;
var
RedInc, GreenInc, BlueInc: Real;
Red, Green, Blue: Real;
X: Integer;
I, J: Integer;
LBlockCount: Integer;
begin
if (FBlock = 0) or (FBlockWidth = 0) then
Exit;
X := 1;
{ LBlockCount equals # blocks of size FBlockWidth }
if FLastBlockPartial then
LBlockCount := FBlockCount - 1
else
LBlockCount := FBlockCount;
{ Are the start and end colors equal? }
if FStart = FEnd then
begin
{ No gradient fill because the start color equals the end color }
FBuffer.Canvas.Brush.Color := FStart;
FBuffer.Canvas.Brush.Style := bsSolid;
for I := 0 to LBlockCount - 1 do
begin
{ Width of block is FBlockWidth -1 [-1 for seperator] }
FBuffer.Canvas.FillRect(Bounds(X, 1, FBlockWidth - 1, ClientHeight - 2));
Inc(X, FBlockWidth);
end;
if FLastBlockPartial then
{ Width of last block is FLastBlockWidth [no seperator] }
FBuffer.Canvas.FillRect(Bounds(X, 1, FLastBlockWidth, ClientHeight - 2));
end
else
begin
RedInc := (GetRValue(FEnd) - GetRValue(FStart)) / FBlock;
GreenInc := (GetGValue(FEnd) - GetGValue(FStart)) / FBlock;
BlueInc := (GetBValue(FEnd) - GetBValue(FStart)) / FBlock;
Red := GetRValue(FStart);
Green := GetGValue(FStart);
Blue := GetBValue(FStart);
FBuffer.Canvas.Brush.Style := bsSolid;
for I := 0 to LBlockCount - 1 do
begin
if not FGradientBlocks then
begin
FBuffer.Canvas.Brush.Color := RGB(Round(Red), Round(Green), Round(Blue));
Red := Red + RedInc * FBlockWidth;
Blue := Blue + BlueInc * FBlockWidth;
Green := Green + GreenInc * FBlockWidth;
{ Width of block is FBlockWidth -1 [-1 for separator] }
FBuffer.Canvas.FillRect(Bounds(X, 1, FBlockWidth - 1, ClientHeight - 2));
end
else
begin
{ Fill the progressbar with slices of 1 width }
for J := 0 to FBlockWidth - 2 do
begin
FBuffer.Canvas.Brush.Color := RGB(Round(Red), Round(Green), Round(Blue));
Red := Red + RedInc;
Blue := Blue + BlueInc;
Green := Green + GreenInc;
FBuffer.Canvas.FillRect(Bounds(X + J, 1, 1, ClientHeight - 2));
end;
{ Seperator is not filled, but increase the colors }
Red := Red + RedInc;
Blue := Blue + BlueInc;
Green := Green + GreenInc;
end;
Inc(X, FBlockWidth);
end;
if FLastBlockPartial then
begin
if not FGradientBlocks then
begin
FBuffer.Canvas.Brush.Color := RGB(Round(Red), Round(Green), Round(Blue));
{ Width of last block is FLastBlockWidth [no seperator] }
FBuffer.Canvas.FillRect(Bounds(X, 1, FLastBlockWidth, ClientHeight - 2));
end
else
{ Width of last block is FLastBlockWidth [no seperator] }
for J := 0 to FLastBlockWidth - 1 do
begin
FBuffer.Canvas.Brush.Color := RGB(Round(Red), Round(Green), Round(Blue));
Red := Red + RedInc;
Blue := Blue + BlueInc;
Green := Green + GreenInc;
FBuffer.Canvas.FillRect(Bounds(X + J, 1, 1, ClientHeight - 2));
end;
end;
end;
{ Draw the block seperators }
X := FBlockWidth;
FBuffer.Canvas.Brush.Color := ColorOrDefaultColor;
for I := 0 to LBlockCount - 1 do
begin
FBuffer.Canvas.FillRect(Bounds(X, 1, 1, ClientHeight - 2));
Inc(X, FBlockWidth);
end;
end;
procedure TJvSpecialProgress.PaintRectangle;
var
Rect: TRect;
begin
Rect := ClientRect;
if BorderStyle = bsNone then
begin
FBuffer.Canvas.Brush.Color := ColorOrDefaultColor;
FBuffer.Canvas.FrameRect(Rect);
end
else
if FFlat then
begin
FBuffer.Canvas.Brush.Style := bsClear;
FBuffer.Canvas.Pen.Color := FBorderColor;
FBuffer.Canvas.Rectangle(Rect);
end else
begin
Frame3D(FBuffer.Canvas, Rect, clBtnFace, clBtnFace, 1);
Frame3D(FBuffer.Canvas, Rect, clBtnShadow, clBtnHighlight, 1);
Frame3D(FBuffer.Canvas, Rect, cl3DDkShadow, clBtnFace, 1);
end;
end;
procedure TJvSpecialProgress.PaintSolid;
var
RedInc, BlueInc, GreenInc: Real;
I: Integer;
begin
if FBlock = 0 then
Exit;
if FStart = FEnd then
begin
{ No gradient fill because the start color equals the end color }
FBuffer.Canvas.Brush.Color := FStart;
FBuffer.Canvas.Brush.Style := bsSolid;
FBuffer.Canvas.FillRect(Rect(1, 1, 1 + FBlock, ClientHeight - 1));
end
else
begin
RedInc := (GetRValue(FEnd) - GetRValue(FStart)) / FBlock;
GreenInc := (GetGValue(FEnd) - GetGValue(FStart)) / FBlock;
BlueInc := (GetBValue(FEnd) - GetBValue(FStart)) / FBlock;
FBuffer.Canvas.Brush.Style := bsSolid;
{ Fill the progressbar with slices of 1 width }
for I := 1 to FBlock do
begin
FBuffer.Canvas.Brush.Color := RGB(
Round(GetRValue(FStart) + ((I - 1) * RedInc)),
Round(GetGValue(FStart) + ((I - 1) * GreenInc)),
Round(GetBValue(FStart) + ((I - 1) * BlueInc)));
FBuffer.Canvas.FillRect(Rect(I, 1, I + 1, ClientHeight - 1));
end;
end;
end;
procedure TJvSpecialProgress.PaintText;
var
S: string;
X, Y: Integer;
LBlock: Integer;
begin
case TextOption of
toPercent:
S := Format('%d%%', [PercentDone]);
toFormat:
S := Format(Caption, [PercentDone]);
toCaption:
S := Caption;
else {toNoText}
Exit;
end;
if TextCentered then
LBlock := ClientWidth
else
LBlock := FBlock;
X := (LBlock - FBuffer.Canvas.TextWidth(S)) div 2;
if X < 0 then
X := 0;
Y := (ClientHeight - FBuffer.Canvas.TextHeight(S)) div 2;
if Y < 0 then
Y := 0;
SetBkMode(FBuffer.Canvas.Handle, LCLType.TRANSPARENT);
// FBuffer.Canvas.Brush.Color := clNone;
// FBuffer.Canvas.Brush.Style := bsClear;
FBuffer.Canvas.TextOut(X, Y, S);
end;
procedure TJvSpecialProgress.SetBorderColor(const Value: TColor);
begin
if FBorderColor <> Value then
begin
FBorderColor := Value;
FIsChanged := True;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetBorderStyle(const Value: TBorderStyle);
begin
if FBorderStyle <> Value then
begin
FBorderStyle := Value;
FIsChanged := True;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetEndColor(const Value: TColor);
begin
if FEndColor <> Value then
begin
FEndColor := Value;
FEnd := ColorToRGB(FEndColor);
FIsChanged := True;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetFlat(const Value: Boolean);
begin
if FFlat <> Value then
begin
FFlat := Value;
FIsChanged := True;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetGradientBlocks(const Value: Boolean);
begin
if Value <> FGradientBlocks then
begin
FGradientBlocks := Value;
if not Solid then
begin
FIsChanged := True;
UpdateBuffer;
end;
end;
end;
procedure TJvSpecialProgress.SetMaximum(const Value: Integer);
var
OldPercentageDone: Integer;
begin
if FMaximum <> Value then
begin
OldPercentageDone := GetPercentDone;
FMaximum := Value;
if FMaximum < FMinimum then
FMaximum := FMinimum;
if FPosition > Value then
FPosition := Value;
{ If the percentage has changed we must update, otherwise check in
UpdateBlock if we must update }
FIsChanged := (TextOption in [toPercent, toFormat]) and (OldPercentageDone <> GetPercentDone);
UpdateBlock;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetMinimum(const Value: Integer);
var
OldPercentageDone: Integer;
begin
if FMinimum <> Value then
begin
OldPercentageDone := GetPercentDone;
FMinimum := Value;
if FMinimum > FMaximum then
FMinimum := FMaximum;
if FPosition < Value then
FPosition := Value;
{ If the percentage has changed we must update, otherwise check in
UpdateBlock if we must update }
FIsChanged := (TextOption in [toPercent, toFormat]) and (OldPercentageDone <> GetPercentDone);
UpdateBlock;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetPosition(const Value: Integer);
var
OldPercentageDone: Integer;
begin
if FPosition <> Value then
begin
OldPercentageDone := GetPercentDone;
FPosition := Value;
if FPosition > FMaximum then
FPosition := FMaximum
else
if FPosition < FMinimum then
FPosition := FMinimum;
{ If the percentage has changed we must update, otherwise check in
UpdateBlock if we must update }
FIsChanged := (TextOption in [toPercent, toFormat]) and (OldPercentageDone <> GetPercentDone);
UpdateBlock;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetSolid(const Value: Boolean);
begin
if FSolid <> Value then
begin
FSolid := Value;
FIsChanged := True;
UpdateBlock;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetStartColor(const Value: TColor);
begin
if FStartColor <> Value then
begin
FStartColor := Value;
FStart := ColorToRGB(FStartColor);
FIsChanged := True;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.SetTextCentered(const Value: Boolean);
begin
if FTextCentered <> Value then
begin
FTextCentered := Value;
if TextOption <> toNoText then
begin
FIsChanged := True;
UpdateBuffer;
end;
end;
end;
procedure TJvSpecialProgress.SetTextOption(const Value: TJvTextOption);
begin
if FTextOption <> Value then
begin
FTextOption := Value;
FIsChanged := True;
UpdateBuffer;
end;
end;
procedure TJvSpecialProgress.StepIt;
begin
if FPosition + FStep > FMaximum then
Position := FMaximum
else
if FPosition + FStep < FMinimum then
Position := FMinimum
else
Position := FPosition + FStep;
end;
procedure TJvSpecialProgress.UpdateBuffer;
begin
if not FIsChanged or (csLoading in ComponentState) then
Exit;
FIsChanged := False;
if (ClientWidth <= 0) or (ClientHeight <= 0) then
Exit;
FBuffer.Width := ClientWidth;
FBuffer.Height := ClientHeight;
if FSolid then
PaintSolid
else
PaintNonSolid;
DoEraseBackground;
PaintText;
PaintRectangle;
Repaint;
end;
procedure TJvSpecialProgress.UpdateBlock;
var
NewBlock: Integer;
NextBlockWidth: Integer;
begin
if csLoading in ComponentState then
Exit;
if (FMaximum = FMinimum) or (ClientWidth < 2) then
Exit;
{ Max width of the progressbar is ClientWidth -2 [-2 for the border],
NewBlock specifies the new length of the progressbar }
NewBlock := MulDiv(FPosition - FMinimum, ClientWidth - 2, FMaximum - FMinimum);
if not FSolid then
begin
{ The Block of a solid bar can have a different size than the Block
of a non-solid bar }
FBlockWidth := Round(ClientHeight * 2 div 3);
if FBlockWidth = 0 then
NewBlock := 0
else
begin
{ The block count equals 'Block div blockwidth'. We add 1 to
that number if the Block is further than 1/2 of the next block.
Note that the next block doesn't have to be of size FBlockWidth,
because it can be the last block, which can be smaller than
FBlockWidth }
FBlockCount := NewBlock div FBlockWidth;
NextBlockWidth := ClientWidth - 2 - (FBlockCount * FBlockWidth);
if NextBlockWidth > FBlockWidth then
NextBlockWidth := FBlockWidth;
if 2 * (NewBlock mod FBlockWidth) > NextBlockWidth then
begin
Inc(FBlockCount);
FLastBlockPartial := NextBlockWidth < FBlockWidth;
FLastBlockWidth := NextBlockWidth;
NewBlock := FBlockWidth * FBlockCount;
{ If FLastBlockPartial equals True then the progressbar is totally
filled: }
if FLastBlockPartial then
NewBlock := ClientWidth - 2;
end
else
begin
FLastBlockPartial := False;
NewBlock := FBlockWidth * FBlockCount;
end;
end;
end;
if NewBlock = FBlock then
Exit;
FBlock := NewBlock;
FIsChanged := True;
UpdateBuffer;
end;
end.