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bcbutton.pas
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bcbutton.pas
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// SPDX-License-Identifier: LGPL-3.0-linking-exception
{ Customizable component which using BGRABitmap for drawing. Control mostly rendered
using framework.
Functionality:
- Gradients
- Double gradients
- Rounding
- Drop down list
- Glyph
- States (normal, hover, clicked)
- Caption with shadow
- Full alpha and antialias support
originally written in 2012 by Krzysztof Dibowski dibowski at interia.pl
}
{******************************* CONTRIBUTOR(S) ******************************
- Edivando S. Santos Brasil | [email protected]
(Compatibility with delphi VCL 11/2018)
***************************** END CONTRIBUTOR(S) *****************************}
unit BCButton;
{$I bgracontrols.inc}
interface
uses
Classes, types, {$IFDEF FPC}LCLType, LResources, {$ENDIF} Controls, Dialogs,
ActnList, ImgList, Menus, // MORA
Buttons, Graphics,
{$IFNDEF FPC}BGRAGraphics, GraphType, FPImage, {$ENDIF}
BGRABitmap, BGRABitmapTypes, BCThemeManager, BCTypes, Forms, BCBasectrls,
fpjsonrtti, Typinfo, fpjson;
{off $DEFINE DEBUG}
type
TBCButtonMemoryUsage = (bmuLow, bmuMedium, bmuHigh);
TBCButtonState = class;
TBCButtonStyle = (bbtButton, bbtDropDown);
TOnAfterRenderBCButton = procedure(Sender: TObject; const ABGRA: TBGRABitmap;
AState: TBCButtonState; ARect: TRect) of object;
TBCButtonPropertyData = (pdNone, pdUpdateSize);
// MORA: DropDown styles
TBCButtonDropDownStyle = (
bdsSeparate, // DropDown is a separate button (default)
bdsCommon // DropDown is same as main button
);
TBCButtonDropDownPosition = (
bdpLeft, // default
bdpBottom);
{ TBCButtonState }
TBCButtonState = class(TBCProperty)
private
FBackground: TBCBackground;
FBorder: TBCBorder;
FFontEx: TBCFont;
procedure OnChangeFont({%H-}Sender: TObject; {%H-}AData: PtrInt);
procedure OnChangeChildProperty({%H-}Sender: TObject; AData: PtrInt);
procedure SetBackground(AValue: TBCBackground);
procedure SetBorder(AValue: TBCBorder);
procedure SetFontEx(const AValue: TBCFont);
public
constructor Create(AControl: TControl); override;
destructor Destroy; override;
procedure Assign(Source: TPersistent); override;
procedure Scale(AScale: single; APreserveDefaultFontHeight: boolean = true);
published
property Background: TBCBackground read FBackground write SetBackground;
property Border: TBCBorder read FBorder write SetBorder;
property FontEx: TBCFont read FFontEx write SetFontEx;
end;
{ TCustomBCButton }
TCustomBCButton = class(TBCStyleGraphicControl)
private
{ Private declarations }
{$IFDEF INDEBUG}
FRenderCount: integer;
{$ENDIF}
FDropDownArrowSize: integer;
FDropDownWidth: integer;
FFlipArrow: boolean;
FActiveButt: TBCButtonStyle;
FBGRANormal, FBGRAHover, FBGRAClick: TBGRABitmapEx;
FCanvasScale: Single;
FCanvasScaleMode: TBCCanvasScaleMode;
FGlyphAlignment: TBCAlignment;
FGlyphOldPlacement: boolean;
FGlyphScale: single;
FInnerMargin: single;
FMemoryUsage: TBCButtonMemoryUsage;
FPreserveGlyphOnAssign: boolean;
FRounding: TBCRounding;
FRoundingDropDown: TBCRounding;
FStateClicked: TBCButtonState;
FStateHover: TBCButtonState;
FStateNormal: TBCButtonState;
FDown: boolean;
FGlyph: TBitmap;
FGlyphMargin: integer;
FButtonState: TBCMouseState;
FDownButtonState: TBCMouseState;
FOnAfterRenderBCButton: TOnAfterRenderBCButton;
FOnButtonClick: TNotifyEvent;
FStaticButton: boolean;
FStyle: TBCButtonStyle;
FGlobalOpacity: byte;
FTextApplyGlobalOpacity: boolean;
AutoSizeExtraY: integer;
AutoSizeExtraX: integer;
FLastBorderWidth: integer;
// MORA
FClickOffset: boolean;
FDropDownArrow: boolean;
FDropDownMenu: TPopupMenu;
FDropDownMenuVisible: boolean;
FDropDownClosingTime: TDateTime;
FDropDownPosition: TBCButtonDropDownPosition;
FDropDownStyle: TBCButtonDropDownStyle;
FImageChangeLink: TChangeLink;
FImageIndex: integer;
FImages: TCustomImageList;
FSaveDropDownClosed: TNotifyEvent;
FShowCaption: boolean;
procedure AssignDefaultStyle;
procedure CalculateGlyphSize(out NeededWidth, NeededHeight: integer);
procedure DropDownClosed(Sender: TObject);
function GetBGRAClick: TBGRABitmapEx;
function GetBGRAHover: TBGRABitmapEx;
function GetBGRANormal: TBGRABitmapEx;
procedure OnRestoreProperty(Sender: TObject; AObject: TObject;
Info: PPropInfo; AValue: TJSONData; var Handled: Boolean);
procedure OnStreamProperty(Sender: TObject; AObject: TObject;
Info: PPropInfo; var Res: TJSONData);
procedure RenderAll(ANow: boolean = False);
function GetButtonRect: TRect;
function GetDropDownWidth(AFull: boolean = True): integer;
function GetDropDownRect(AFull: boolean = True): TRect;
procedure SetBCButtonStateClicked(const AValue: TBCButtonState);
procedure SetBCButtonStateHover(const AValue: TBCButtonState);
procedure SetBCButtonStateNormal(const AValue: TBCButtonState);
procedure SetCanvasScaleMode(AValue: TBCCanvasScaleMode);
procedure SetClickOffset(AValue: boolean);
procedure SetDown(AValue: boolean);
procedure SetDropDownArrow(AValue: boolean);
procedure SetDropDownArrowSize(AValue: integer);
procedure SetDropDownPosition(AValue: TBCButtonDropDownPosition);
procedure SetDropDownWidth(AValue: integer);
procedure SetFlipArrow(AValue: boolean);
procedure SetGlyph(const AValue: TBitmap);
procedure SetGlyphAlignment(AValue: TBCAlignment);
procedure SetGlyphMargin(const AValue: integer);
procedure SetGlyphOldPlacement(AValue: boolean);
procedure SetGlyphScale(AValue: single);
procedure SetImageIndex(AValue: integer);
procedure SetImages(AValue: TCustomImageList);
procedure SetInnerMargin(AValue: single);
procedure SetMemoryUsage(AValue: TBCButtonMemoryUsage);
procedure SetRounding(AValue: TBCRounding);
procedure SetRoundingDropDown(AValue: TBCRounding);
procedure SetShowCaption(AValue: boolean);
procedure SetStaticButton(const AValue: boolean);
procedure SetStyle(const AValue: TBCButtonStyle);
procedure SetGlobalOpacity(const AValue: byte);
procedure SetTextApplyGlobalOpacity(const AValue: boolean);
procedure UpdateSize;
procedure OnChangeGlyph({%H-}Sender: TObject);
procedure OnChangeState({%H-}Sender: TObject; AData: PtrInt);
procedure ImageListChange(ASender: TObject);
function GetGlyph: TBitmap;
protected
{ Protected declarations }
procedure LimitMemoryUsage;
procedure CalculatePreferredSize(var PreferredWidth, PreferredHeight: integer;
{%H-}WithThemeSpace: boolean); override;
class function GetControlClassDefaultSize: TSize; override;
procedure Click; override;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState;
X, Y: integer); override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: integer); override;
procedure MouseEnter; override;
procedure MouseLeave; override;
procedure MouseMove(Shift: TShiftState; X, Y: integer); override;
procedure SetEnabled(Value: boolean); override;
procedure TextChanged; override;
protected
// MORA
procedure ActionChange(Sender: TObject; CheckDefaults: boolean); override;
function GetActionLinkClass: TControlActionLinkClass; override;
procedure Notification(AComponent: TComponent; Operation: TOperation);
override;
procedure Render(ABGRA: TBGRABitmapEx; AState: TBCButtonState); virtual;
procedure RenderState(ABGRA: TBGRABitmapEx; AState: TBCButtonState;
const ARect: TRect; ARounding: TBCRounding); virtual;
property ClickOffset: boolean read FClickOffset write SetClickOffset default False;
property DropDownArrow: boolean
read FDropDownArrow write SetDropDownArrow default False;
property DropDownMenu: TPopupMenu read FDropDownMenu write FDropDownMenu;
property DropDownStyle: TBCButtonDropDownStyle
read FDropDownStyle write FDropDownStyle default bdsSeparate;
property DropDownPosition: TBCButtonDropDownPosition
read FDropDownPosition write SetDropDownPosition default bdpLeft;
property Images: TCustomImageList read FImages write SetImages;
property ImageIndex: integer read FImageIndex write SetImageIndex default -1;
property ShowCaption: boolean read FShowCaption write SetShowCaption default True;
protected
{$IFDEF INDEBUG}
function GetDebugText: string; override;
{$ENDIF}
function GetStyleExtension: string; override;
procedure DrawControl; override;
procedure RenderControl; override;
property BGRANormal: TBGRABitmapEx read GetBGRANormal;
property BGRAHover: TBGRABitmapEx read GetBGRAHover;
property BGRAClick: TBGRABitmapEx read GetBGRAClick;
protected
property AutoSizeExtraVertical: integer read AutoSizeExtraY;
property AutoSizeExtraHorizontal: integer read AutoSizeExtraX;
property CanvasScaleMode: TBCCanvasScaleMode read FCanvasScaleMode write SetCanvasScaleMode default csmAuto;
property StateNormal: TBCButtonState read FStateNormal write SetBCButtonStateNormal;
property StateHover: TBCButtonState read FStateHover write SetBCButtonStateHover;
property StateClicked: TBCButtonState read FStateClicked
write SetBCButtonStateClicked;
property Down: boolean read FDown write SetDown default False;
property DropDownWidth: integer read FDropDownWidth write SetDropDownWidth;
property DropDownArrowSize: integer read FDropDownArrowSize
write SetDropDownArrowSize;
property FlipArrow: boolean read FFlipArrow write SetFlipArrow default False;
property Glyph: TBitmap read GetGlyph write SetGlyph;
property GlyphScale: single read FGlyphScale write SetGlyphScale default 1;
property GlyphMargin: integer read FGlyphMargin write SetGlyphMargin default 5;
property GlyphAlignment: TBCAlignment read FGlyphAlignment write SetGlyphAlignment default bcaCenter;
property GlyphOldPlacement: boolean read FGlyphOldPlacement write SetGlyphOldPlacement default true;
property Style: TBCButtonStyle read FStyle write SetStyle default bbtButton;
property StaticButton: boolean
read FStaticButton write SetStaticButton default False;
property GlobalOpacity: byte read FGlobalOpacity write SetGlobalOpacity;
property Rounding: TBCRounding read FRounding write SetRounding;
property RoundingDropDown: TBCRounding read FRoundingDropDown
write SetRoundingDropDown;
property TextApplyGlobalOpacity: boolean
read FTextApplyGlobalOpacity write SetTextApplyGlobalOpacity;
property OnAfterRenderBCButton: TOnAfterRenderBCButton
read FOnAfterRenderBCButton write FOnAfterRenderBCButton;
property OnButtonClick: TNotifyEvent read FOnButtonClick write FOnButtonClick;
property MemoryUsage: TBCButtonMemoryUsage read FMemoryUsage write SetMemoryUsage;
property InnerMargin: single read FInnerMargin write SetInnerMargin;
property PreserveGlyphOnAssign: boolean read FPreserveGlyphOnAssign write FPreserveGlyphOnAssign default True;
public
{ Constructor }
constructor Create(AOwner: TComponent); override;
{ Destructor }
destructor Destroy; override;
{ Assign the properties from Source to this instance }
procedure Assign(Source: TPersistent); override;
{ Set dropdown size and autosize extra padding }
procedure SetSizeVariables(newDropDownWidth, newDropDownArrowSize,
newAutoSizeExtraVertical, newAutoSizeExtraHorizontal: integer);
{ Called by EndUpdate }
procedure UpdateControl; override;
property CanvasScale: single read FCanvasScale;
public
procedure ScaleStyle(AScale: single; APreserveDefaultFontHeight: boolean = true);
{$IFDEF FPC}
{ Save all published settings to file }
procedure SaveToFile(AFileName: string); override;
procedure SaveToJSONFile(AFileName: string);
function SaveToJSON: string;
{ Load and assign all published settings from file }
procedure LoadFromFile(AFileName: string); override;
procedure LoadFromJSONFile(AFileName: string);
procedure LoadFromJSON(AJSON: string);
{ Assign the properties from AFileName to this instance }
procedure AssignFromFile(AFileName: string); override;
procedure AssignFromResource(AResourceName: string);
{$ENDIF}
{ Used by SaveToFile/LoadFromFile }
procedure OnFindClass({%H-}Reader: TReader; const AClassName: string;
var ComponentClass: TComponentClass);
end;
TBCButton = class(TCustomBCButton)
private
FBCThemeManager: TBCThemeManager;
procedure SetFBCThemeManager(AValue: TBCThemeManager);
published
property Action;
property Align;
property Anchors;
{ Click to edit the style. Available when editing only. If you want to stream the style from a file at runtime please use LoadFromFile and SaveToFile methods. }
property AssignStyle;
property AutoSize;
{ The style of the button when pressed. }
property StateClicked;
{ The style of the button when hovered. }
property StateHover;
{ The default style of the button. }
property StateNormal;
property BorderSpacing;
property CanvasScaleMode;
property Caption;
property Color;
property Constraints;
{ Set to True to change the button to always show a StateClicked style that will not change when button is clicked or hovered. }
property Down;
{ The width of the dropdown arrow area. }
property DropDownWidth;
{ The size of the dropdown arrow. }
property DropDownArrowSize;
property Enabled;
{ Changes the direction of the arrow. Default: False. }
property FlipArrow;
{ Set the opacity that will be applied to the whole button. Default: 255. }
property GlobalOpacity;
{ The glyph icon. }
property Glyph;
property GlyphScale;
property GlyphAlignment;
property GlyphOldPlacement;
property PreserveGlyphOnAssign;
{ The margin of the glyph icon. }
property GlyphMargin;
property Hint;
property InnerMargin;
{ Called when the button finish the render. Use it to add your own drawings to the button. }
property OnAfterRenderBCButton;
{ Called when the button part is clicked, not the dropdown. }
property OnButtonClick;
property OnClick;
property OnDblClick;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnMouseWheel;
property OnMouseWheelDown;
property OnMouseWheelUp;
property ParentColor;
property PopupMenu;
{ Change the style of the rounded corners of the button. }
property Rounding;
{ Change the style of the rounded corners of the dropdown part of the button. }
property RoundingDropDown;
{ Set to True to change the button to always show a StateNormal style that will not change when button is clicked or hovered. }
property StaticButton;
property ShowHint;
{ The style of button that will be used. bbtButton or bbtDropDown. }
property Style;
{ Apply the global opacity to rendered text. Default: False. }
property TextApplyGlobalOpacity;
property Visible;
{ -ToDo: Unused property? }
property ClickOffset;
{ Show the dropdown arrow. }
property DropDownArrow;
{ The dropdown menu that will be displayed when the button is pressed. }
property DropDownMenu;
{ The kind of dropdown that will be used. bdsSeparate will show the dropdown down the dropdown arrow side. bdsCommon will show the dropdown down the whole button. }
property DropDownStyle;
{ The position of the dropdown arrow. }
property DropDownPosition;
{ The image list that holds an image to be used with the button ImageIndex property. }
property Images;
{ The index of the image that will be used for the button as glyph icon if glyph property is not set. }
property ImageIndex;
{ Show caption or hides it. Default: True. }
property ShowCaption;
{ Limit memory usage by selecting one of the options. Default: bmuHigh. }
property MemoryUsage;
{ The unique name of the control in the form. }
property Name;
property ThemeManager: TBCThemeManager read FBCThemeManager write SetFBCThemeManager;
end;
{ TBCButtonActionLink }
TBCButtonActionLink = class(TControlActionLink)
protected
procedure AssignClient(AClient: TObject); override;
procedure SetChecked(Value: boolean); override;
procedure SetImageIndex(Value: integer); override;
public
function IsCheckedLinked: boolean; override;
function IsImageIndexLinked: boolean; override;
end;
{$IFDEF FPC}procedure Register;{$ENDIF}
implementation
uses {$IFDEF FPC}LCLIntf, PropEdits, GraphPropEdits, LCLProc, {$ENDIF}Math, BCTools, SysUtils;
const
DropDownReopenDelay = 0.2/(24*60*60);
{$IFDEF FPC}//#
type
TBCButtonImageIndexPropertyEditor = class(TImageIndexPropertyEditor)
protected
function GetImageList: TCustomImageList; override;
end;
{$ENDIF}
{ TBCButton }
procedure TBCButton.SetFBCThemeManager(AValue: TBCThemeManager);
begin
if FBCThemeManager=AValue then Exit;
FBCThemeManager:=AValue;
end;
{$IFDEF FPC}//#
function TBCButtonImageIndexPropertyEditor.GetImageList: TCustomImageList;
var
Component: TPersistent;
begin
Component := GetComponent(0);
if Component is TCustomBCButton then
Result := TCustomBCButton(Component).Images
else
Result := nil;
end;
{$ENDIF}
{$IFDEF FPC}
procedure Register;
begin
{$I images\bgracontrols_images.lrs}
//{$I icons\bcbutton_icon.lrs}
RegisterComponents('BGRA Button Controls', [TBCButton]);
RegisterPropertyEditor(TypeInfo(integer), TBCButton,
'ImageIndex', TBCButtonImageIndexPropertyEditor);
end;
{$ENDIF}
{ TBCButtonActionLink }
procedure TBCButtonActionLink.AssignClient(AClient: TObject);
begin
inherited AssignClient(AClient);
FClient := AClient as TCustomBCButton;
end;
procedure TBCButtonActionLink.SetChecked(Value: boolean);
begin
if IsCheckedLinked then
TCustomBCButton(FClient).Down := Value;
end;
procedure TBCButtonActionLink.SetImageIndex(Value: integer);
begin
if IsImageIndexLinked then
TCustomBCButton(FClient).ImageIndex := Value;
end;
function TBCButtonActionLink.IsCheckedLinked: boolean;
begin
Result := inherited IsCheckedLinked and (TCustomBCButton(FClient).Down =
(Action as TCustomAction).Checked);
end;
function TBCButtonActionLink.IsImageIndexLinked: boolean;
begin
Result := inherited IsImageIndexLinked and
(TCustomBCButton(FClient).ImageIndex = (Action as TCustomAction).ImageIndex);
end;
{ TBCButtonState }
procedure TBCButtonState.SetFontEx(const AValue: TBCFont);
begin
if FFontEx = AValue then
exit;
FFontEx.Assign(AValue);
Change;
end;
procedure TBCButtonState.OnChangeFont(Sender: TObject; AData: PtrInt);
begin
Change(PtrInt(pdUpdateSize));
end;
procedure TBCButtonState.OnChangeChildProperty(Sender: TObject; AData: PtrInt);
begin
Change(AData);
end;
procedure TBCButtonState.SetBackground(AValue: TBCBackground);
begin
if FBackground = AValue then
Exit;
FBackground.Assign(AValue);
Change;
end;
procedure TBCButtonState.SetBorder(AValue: TBCBorder);
begin
if FBorder = AValue then
Exit;
FBorder.Assign(AValue);
Change;
end;
constructor TBCButtonState.Create(AControl: TControl);
begin
FBackground := TBCBackground.Create(AControl);
FBorder := TBCBorder.Create(AControl);
FFontEx := TBCFont.Create(AControl);
FBackground.OnChange := OnChangeChildProperty;
FBorder.OnChange := OnChangeChildProperty;
FFontEx.OnChange := OnChangeFont;
inherited Create(AControl);
end;
destructor TBCButtonState.Destroy;
begin
FBackground.Free;
FBorder.Free;
FFontEx.Free;
inherited Destroy;
end;
procedure TBCButtonState.Assign(Source: TPersistent);
begin
if Source is TBCButtonState then
begin
FBackground.Assign(TBCButtonState(Source).FBackground);
FBorder.Assign(TBCButtonState(Source).FBorder);
FFontEx.Assign(TBCButtonState(Source).FFontEx);
Change(PtrInt(pdUpdateSize));
end
else
inherited Assign(Source);
end;
procedure TBCButtonState.Scale(AScale: single; APreserveDefaultFontHeight: boolean);
begin
FBackground.Scale(AScale);
FBorder.Scale(AScale);
FFontEx.Scale(AScale, APreserveDefaultFontHeight);
end;
{ TCustomBCButton }
procedure TCustomBCButton.AssignDefaultStyle;
begin
FRounding.RoundX := 12;
FRounding.RoundY := 12;
// Normal
with StateNormal do
begin
Border.Style := bboNone;
FontEx.Color := RGBToColor(230, 230, 255);
FontEx.Style := [fsBold];
FontEx.Shadow := True;
FontEx.ShadowOffsetX := 1;
FontEx.ShadowOffsetY := 1;
FontEx.ShadowRadius := 2;
Background.Gradient1EndPercent := 60;
Background.Style := bbsGradient;
// Gradient1
with Background.Gradient1 do
begin
EndColor := RGBToColor(64, 64, 128);
StartColor := RGBToColor(0, 0, 64);
end;
// Gradient2
with Background.Gradient2 do
begin
EndColor := RGBToColor(0, 0, 64);
GradientType := gtRadial;
Point1XPercent := 50;
Point1YPercent := 100;
Point2YPercent := 0;
StartColor := RGBToColor(64, 64, 128);
end;
end;
// Hover
with StateHover do
begin
Border.Style := bboNone;
FontEx.Color := RGBToColor(255, 255, 255);
FontEx.Style := [fsBold];
FontEx.Shadow := True;
FontEx.ShadowOffsetX := 1;
FontEx.ShadowOffsetY := 1;
FontEx.ShadowRadius := 2;
Background.Gradient1EndPercent := 100;
Background.Style := bbsGradient;
// Gradient1
with Background.Gradient1 do
begin
EndColor := RGBToColor(0, 64, 128);
GradientType := gtRadial;
Point1XPercent := 50;
Point1YPercent := 100;
Point2YPercent := 0;
StartColor := RGBToColor(0, 128, 255);
end;
end;
// Clicked
with StateClicked do
begin
Border.Style := bboNone;
FontEx.Color := RGBToColor(230, 230, 255);
FontEx.Style := [fsBold];
FontEx.Shadow := True;
FontEx.ShadowOffsetX := 1;
FontEx.ShadowOffsetY := 1;
FontEx.ShadowRadius := 2;
Background.Gradient1EndPercent := 100;
Background.Style := bbsGradient;
// Gradient1
with Background.Gradient1 do
begin
EndColor := RGBToColor(0, 0, 64);
GradientType := gtRadial;
Point1XPercent := 50;
Point1YPercent := 100;
Point2YPercent := 0;
StartColor := RGBToColor(0, 64, 128);
end;
end;
end;
procedure TCustomBCButton.CalculateGlyphSize(out NeededWidth, NeededHeight: integer);
begin
if Assigned(FGlyph) and not FGlyph.Empty then
begin
NeededWidth := ceil(FGlyph.Width * FGlyphScale);
NeededHeight := ceil(FGlyph.Height * FGlyphScale);
end
else
if Assigned(FImages) then
begin
NeededWidth := FImages.ResolutionForPPI[FImages.Width, Screen.PixelsPerInch, 1].Width;
NeededHeight := FImages.ResolutionForPPI[FImages.Width, Screen.PixelsPerInch, 1].Height;
end
else
begin
NeededHeight := 0;
NeededWidth := 0;
end;
end;
procedure TCustomBCButton.RenderAll(ANow: boolean);
begin
if (csCreating in ControlState) or IsUpdating then
Exit;
if ANow then
begin
Render(FBGRANormal, FStateNormal);
Render(FBGRAHover, FStateHover);
Render(FBGRAClick, FStateClicked);
end
else
begin
if Assigned(FBGRANormal) then FBGRANormal.NeedRender := True;
if Assigned(FBGRAHover) then FBGRAHover.NeedRender := True;
if Assigned(FBGRAClick) then FBGRAClick.NeedRender := True;
end;
end;
function TCustomBCButton.GetButtonRect: TRect;
begin
Result := GetClientRect;
if FStyle = bbtDropDown then
case FDropDownPosition of
bdpBottom:
Dec(Result.Bottom, GetDropDownWidth(False));
else
// bdpLeft:
Dec(Result.Right, GetDropDownWidth(False));
end;
end;
function TCustomBCButton.GetDropDownWidth(AFull: boolean): integer;
begin
Result := FDropDownWidth + (ifthen(AFull, 2, 1) * FStateNormal.FBorder.Width);
end;
function TCustomBCButton.GetGlyph: TBitmap;
begin
Result := FGlyph as TBitmap;
end;
function TCustomBCButton.GetDropDownRect(AFull: boolean): TRect;
begin
Result := GetClientRect;
case FDropDownPosition of
bdpBottom:
Result.Top := Result.Bottom - GetDropDownWidth(AFull);
else
// bdpLeft:
Result.Left := Result.Right - GetDropDownWidth(AFull);
end;
end;
procedure TCustomBCButton.Render(ABGRA: TBGRABitmapEx; AState: TBCButtonState);
procedure GetActualGlyph(out ABitmap: TBitmap; out AScale: single);
begin
if Assigned(FGlyph) and not FGlyph.Empty then
begin
ABitmap := FGlyph;
AScale := FCanvasScale * FGlyphScale;
end else
if Assigned(FImages) and (FImageIndex > -1) and (FImageIndex < FImages.Count) then
begin
ABitmap := TBitmap.Create;
{$IFDEF FPC}
FImages.ResolutionForPPI[FImages.Width, Screen.PixelsPerInch, FCanvasScale].GetBitmap(FImageIndex, ABitmap);
AScale := 1;
{$ELSE}
FImages.GetBitmapRaw(FImageIndex, result);
ABitmap := AScale;
{$ENDIF}
end else
begin
ABitmap := nil;
AScale := 1;
end;
end;
procedure RenderGlyph(ARect: TRect; AGlyph: TBitmap);
begin
if ARect.IsEmpty or (AGlyph = nil) then exit;
ABGRA.StretchPutImage(ARect, AGlyph, dmLinearBlend);
end;
var
r, r_a, r_g: TRect;
g: TBitmap;
actualCaption: TCaption;
freeScaled: boolean;
scaledState: TBCButtonState;
scaledArrowSize, scaledGlyphMargin, scaledInnerMargin: integer;
scaledRounding, scaledRoundingDropDown: TBCRounding;
gScale: single;
begin
if (csCreating in ControlState) or IsUpdating or (ABGRA = nil) then
Exit;
if FCanvasScale <> 1 then
begin
scaledState := TBCButtonState.Create(nil);
scaledState.Assign(AState);
scaledState.Scale(FCanvasScale, false);
scaledRounding := TBCRounding.Create(nil);
scaledRounding.Assign(Rounding);
scaledRounding.Scale(FCanvasScale);
scaledRoundingDropDown := TBCRounding.Create(nil);
scaledRoundingDropDown.Assign(RoundingDropDown);
scaledRoundingDropDown.Scale(FCanvasScale);
freeScaled := true;
end
else
begin
scaledState := AState;
scaledRounding := Rounding;
scaledRoundingDropDown := RoundingDropDown;
freeScaled := false;
end;
scaledArrowSize := round(DropDownArrowSize * FCanvasScale);
scaledGlyphMargin := round(GlyphMargin * FCanvasScale);
scaledInnerMargin := round(InnerMargin * FCanvasScale);
ABGRA.NeedRender := False;
{ Refreshing size }
ABGRA.SetSize(round(Width * FCanvasScale), round(Height * FCanvasScale));
{ Clearing previous paint }
ABGRA.Fill(BGRAPixelTransparent);
{ Basic body }
r := ScaleRect(GetButtonRect, FCanvasScale);
RenderState(ABGRA, scaledState, r, scaledRounding);
if not GlyphOldPlacement then
r.Inflate(-scaledInnerMargin,-scaledInnerMargin);
{ Calculating rect }
CalculateBorderRect(scaledState.Border, r);
if FStyle = bbtDropDown then
begin
r_a := ScaleRect(GetDropDownRect, FCanvasScale);
RenderState(ABGRA, scaledState, r_a, scaledRoundingDropDown);
CalculateBorderRect(scaledState.Border, r_a);
// Click offset for arrow
if FClickOffset and (AState = FStateClicked) then
r_a.Offset(1,1);
if FFlipArrow then
RenderArrow(TBGRABitmap(ABGRA), r_a, scaledArrowSize, badUp,
scaledState.FontEx.Color)
else
RenderArrow(TBGRABitmap(ABGRA), r_a, scaledArrowSize, badDown,
scaledState.FontEx.Color);
end;
// Click offset for text and glyph
if FClickOffset and (AState = FStateClicked) then
r.Offset(round(1 * FCanvasScale), round(1 * FCanvasScale));
// DropDown arrow
if FDropDownArrow and (FStyle <> bbtDropDown) then
begin
r_a := r;
r_a.Left := r_a.Right - round(FDropDownWidth * FCanvasScale);
if FFlipArrow then
RenderArrow(TBGRABitmap(ABGRA), r_a, scaledArrowSize, badUp,
scaledState.FontEx.Color)
else
RenderArrow(TBGRABitmap(ABGRA), r_a, scaledArrowSize, badDown,
scaledState.FontEx.Color);
Dec(R.Right, round(FDropDownWidth * FCanvasScale));
end;
GetActualGlyph(g, gScale);
if FShowCaption then actualCaption := self.Caption else actualCaption := '';
r_g := ComputeGlyphPosition(r, g, GlyphAlignment, scaledGlyphMargin, actualCaption,
scaledState.FontEx, GlyphOldPlacement, gScale);
if FTextApplyGlobalOpacity then
begin
{ Drawing text }
RenderText(r, scaledState.FontEx, actualCaption, ABGRA, Enabled);
RenderGlyph(r_g, g);
{ Set global opacity }
ABGRA.ApplyGlobalOpacity(FGlobalOpacity);
end
else
begin
{ Set global opacity }
ABGRA.ApplyGlobalOpacity(FGlobalOpacity);
{ Drawing text }
RenderText(r, scaledState.FontEx, actualCaption, ABGRA, Enabled);
RenderGlyph(r_g, g);
end;
if g <> FGlyph then g.Free;
{ Convert to gray if not enabled }
if not Enabled then ABGRA.InplaceGrayscale;
if Assigned(FOnAfterRenderBCButton) then
FOnAfterRenderBCButton(Self, ABGRA, scaledState, r);
if freeScaled then
begin
FreeAndNil(scaledState);
FreeAndNil(scaledRounding);
FreeAndNil(scaledRoundingDropDown);
end;
{$IFDEF INDEBUG}
FRenderCount := FRenderCount +1;
{$ENDIF}
end;
procedure TCustomBCButton.RenderState(ABGRA: TBGRABitmapEx;
AState: TBCButtonState; const ARect: TRect; ARounding: TBCRounding);
begin
RenderBackgroundAndBorder(ARect, AState.FBackground, TBGRABitmap(ABGRA),
ARounding, AState.FBorder, round(FInnerMargin * FCanvasScale));
end;
procedure TCustomBCButton.OnChangeGlyph(Sender: TObject);
begin
RenderControl;
UpdateSize;
Invalidate;
end;
procedure TCustomBCButton.OnChangeState(Sender: TObject; AData: PtrInt);
begin
RenderControl;
if (TBCButtonPropertyData(AData) = pdUpdateSize) or
(FStateNormal.Border.Width <> FLastBorderWidth) then
UpdateSize;
Invalidate;
end;
procedure TCustomBCButton.ImageListChange(ASender: TObject);
begin
if ASender = Images then
begin
RenderControl;
Invalidate;
end;
end;
procedure TCustomBCButton.LimitMemoryUsage;
begin
{$IFNDEF FPC}//# //@ IN DELPHI NEEDRENDER NEED TO BE TRUE. IF FALSE COMPONENT IN BGRANORMAL BE BLACK AFTER INVALIDATE.
if Assigned(FBGRANormal) then FBGRANormal.NeedRender := True;
if Assigned(FBGRAHover) then FBGRAHover.NeedRender := True;
if Assigned(FBGRAClick) then FBGRAClick.NeedRender := True;
{$ENDIF}
if (FMemoryUsage = bmuLow) and Assigned(FBGRANormal) then FBGRANormal.Discard;
if (FMemoryUsage <> bmuHigh) then
begin
if Assigned(FBGRAHover) then FBGRAHover.Discard;
if Assigned(FBGRAClick) then FBGRAClick.Discard;
end;
end;
procedure TCustomBCButton.SetBCButtonStateClicked(const AValue: TBCButtonState);
begin
if FStateClicked = AValue then
exit;
FStateClicked.Assign(AValue);
RenderControl;
Invalidate;
end;
procedure TCustomBCButton.SetBCButtonStateHover(const AValue: TBCButtonState);
begin
if FStateHover = AValue then
exit;
FStateHover.Assign(AValue);
RenderControl;
Invalidate;
end;
procedure TCustomBCButton.SetBCButtonStateNormal(const AValue: TBCButtonState);
begin
if FStateNormal = AValue then
exit;
FStateNormal.Assign(AValue);
RenderControl;
Invalidate;
end;
procedure TCustomBCButton.SetCanvasScaleMode(AValue: TBCCanvasScaleMode);
begin
if FCanvasScaleMode=AValue then Exit;
FCanvasScaleMode:=AValue;
RenderControl;
Invalidate;
end;
procedure TCustomBCButton.SetClickOffset(AValue: boolean);
begin
if FClickOffset = AValue then
Exit;
FClickOffset := AValue;
RenderControl;
end;
procedure TCustomBCButton.SetDown(AValue: boolean);
begin
if FDown = AValue then
exit;
FDown := AValue;
if FDown then
FButtonState := msClicked
else
FButtonState := msNone;
RenderControl;
Invalidate;
end;
procedure TCustomBCButton.SetDropDownArrow(AValue: boolean);
begin
if FDropDownArrow = AValue then
Exit;
FDropDownArrow := AValue;
RenderControl;
Invalidate;
end;
procedure TCustomBCButton.SetDropDownArrowSize(AValue: integer);
begin
if FDropDownArrowSize = AValue then
Exit;
FDropDownArrowSize := AValue;