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CEF4Delphi/source/uCEFLabelButtonComponent.pas
Salvador Díaz Fau 318318c85c Added Views Framework support #244
Added ToolBoxBrowser2 demo
Added TCEFBrowserViewComponent.
Added TCEFLabelButtonComponent.
Added TCEFMenuButtonComponent.
Added TCEFPanelComponent.
Added TCEFTextfieldComponent.
Added TCEFScrollViewComponent.
Added TCEFWindowComponent.
2020-05-05 18:10:33 +02:00

268 lines
8.4 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
// browser in Delphi applications.
//
// The original license of DCEF3 still applies to CEF4Delphi.
//
// For more information about CEF4Delphi visit :
// https://www.briskbard.com/index.php?lang=en&pageid=cef
//
// Copyright © 2020 Salvador Diaz Fau. All rights reserved.
//
// ************************************************************************
// ************ vvvv Original license and comments below vvvv *************
// ************************************************************************
(*
* Delphi Chromium Embedded 3
*
* Usage allowed under the restrictions of the Lesser GNU General Public License
* or alternatively the restrictions of the Mozilla Public License 1.1
*
* 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.
*
* Unit owner : Henri Gourvest <hgourvest@gmail.com>
* Web site : http://www.progdigy.com
* Repository : http://code.google.com/p/delphichromiumembedded/
* Group : http://groups.google.com/group/delphichromiumembedded
*
* Embarcadero Technologies, Inc is not permitted to use or redistribute
* this source code without explicit permission.
*
*)
unit uCEFLabelButtonComponent;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
{$IFDEF MSWINDOWS}WinApi.Windows,{$ENDIF} System.Classes,
{$ELSE}
{$IFDEF MSWINDOWS}Windows,{$ENDIF} Classes,
{$IFDEF FPC}
LCLProc, LCLType, LCLIntf, LResources, InterfaceBase,
{$ENDIF}
{$ENDIF}
uCEFTypes, uCEFInterfaces, uCEFViewsFrameworkEvents, uCEFButtonComponent;
type
{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
TCEFLabelButtonComponent = class(TCEFButtonComponent)
protected
FLabelButton : ICefLabelButton;
FText : ustring;
procedure DestroyView; override;
procedure Initialize; override;
function GetInitialized : boolean; override;
function GetAsView : ICefView; override;
function GetAsButton : ICefButton; override;
function GetAsLabelButton : ICefLabelButton; override;
function GetAsMenuButton : ICefMenuButton; virtual;
function GetText : ustring;
function GetImage(button_state: TCefButtonState): ICefImage;
procedure SetText(const text_: ustring);
procedure SetImage(button_state: TCefButtonState; const image: ICefImage);
// ICefViewDelegateEvents
procedure doCreateCustomView; override;
public
procedure CreateLabelButton(const aText : ustring);
procedure SetTextColor(for_state: TCefButtonState; color: TCefColor);
procedure SetEnabledTextColors(color: TCefColor);
procedure SetFontList(const font_list: ustring);
procedure SetHorizontalAlignment(alignment: TCefHorizontalAlignment);
procedure SetMinimumSize(const size_: TCefSize);
procedure SetMaximumSize(const size_: TCefSize);
property Text : ustring read GetText write SetText;
property Image[button_state : TCefButtonState] : ICefImage read GetImage write SetImage;
property AsMenuButton : ICefMenuButton read GetAsMenuButton;
end;
{$IFDEF FPC}
procedure Register;
{$ENDIF}
// *********************************************************
// ********************** ATTENTION ! **********************
// *********************************************************
// ** **
// ** MANY OF THE EVENTS IN CEF4DELPHI COMPONENTS LIKE **
// ** TCHROMIUM, TFMXCHROMIUM OR TCEFAPPLICATION ARE **
// ** EXECUTED IN A CEF THREAD BY DEFAULT. **
// ** **
// ** WINDOWS CONTROLS MUST BE CREATED AND DESTROYED IN **
// ** THE SAME THREAD TO AVOID ERRORS. **
// ** SOME OF THEM RECREATE THE HANDLERS IF THEY ARE **
// ** MODIFIED AND CAN CAUSE THE SAME ERRORS. **
// ** **
// ** DON'T CREATE, MODIFY OR DESTROY WINDOWS CONTROLS **
// ** INSIDE THE CEF4DELPHI EVENTS AND USE **
// ** SYNCHRONIZATION OBJECTS TO PROTECT VARIABLES AND **
// ** FIELDS IF THEY ARE ALSO USED IN THE MAIN THREAD. **
// ** **
// ** READ THIS FOR MORE INFORMATION : **
// ** https://www.briskbard.com/index.php?pageid=cef **
// ** **
// ** USE OUR FORUMS FOR MORE QUESTIONS : **
// ** https://www.briskbard.com/forum/ **
// ** **
// *********************************************************
// *********************************************************
implementation
uses
uCEFLabelButton, uCEFMiscFunctions, uCEFButtonDelegate;
procedure TCEFLabelButtonComponent.CreateLabelButton(const aText : ustring);
begin
FText := aText;
CreateView;
end;
procedure TCEFLabelButtonComponent.doCreateCustomView;
var
TempDelegate : ICefButtonDelegate;
begin
if (FLabelButton = nil) then
try
TempDelegate := TCustomButtonDelegate.Create(self);
FLabelButton := TCefLabelButtonRef.CreateLabelButton(TempDelegate, FText);
finally
TempDelegate := nil;
end;
end;
procedure TCEFLabelButtonComponent.DestroyView;
begin
inherited DestroyView;
FLabelButton := nil;
end;
procedure TCEFLabelButtonComponent.Initialize;
begin
inherited Initialize;
FLabelButton := nil;
end;
function TCEFLabelButtonComponent.GetInitialized : boolean;
begin
Result := (FLabelButton <> nil);
end;
function TCEFLabelButtonComponent.GetAsView : ICefView;
begin
if Initialized then
Result := FLabelButton as ICefView
else
Result := nil;
end;
function TCEFLabelButtonComponent.GetAsButton : ICefButton;
begin
if Initialized then
Result := FLabelButton as ICefButton
else
Result := nil;
end;
function TCEFLabelButtonComponent.GetAsLabelButton : ICefLabelButton;
begin
Result := FLabelButton;
end;
function TCEFLabelButtonComponent.GetAsMenuButton : ICefMenuButton;
begin
Result := nil;
end;
procedure TCEFLabelButtonComponent.SetText(const text_: ustring);
begin
FText := text_;
if Initialized then
AsLabelButton.SetText(FText);
end;
function TCEFLabelButtonComponent.GetText : ustring;
begin
if Initialized then
FText := AsLabelButton.GetText;
Result := FText;
end;
procedure TCEFLabelButtonComponent.SetImage(button_state: TCefButtonState; const image: ICefImage);
begin
if Initialized then AsLabelButton.SetImage(button_state, image);
end;
function TCEFLabelButtonComponent.GetImage(button_state: TCefButtonState): ICefImage;
begin
if Initialized then
Result := AsLabelButton.GetImage(button_state)
else
Result := nil;
end;
procedure TCEFLabelButtonComponent.SetTextColor(for_state: TCefButtonState; color: TCefColor);
begin
if Initialized then AsLabelButton.SetTextColor(for_state, color);
end;
procedure TCEFLabelButtonComponent.SetEnabledTextColors(color: TCefColor);
begin
if Initialized then AsLabelButton.SetEnabledTextColors(color);
end;
procedure TCEFLabelButtonComponent.SetFontList(const font_list: ustring);
begin
if Initialized then AsLabelButton.SetFontList(font_list);
end;
procedure TCEFLabelButtonComponent.SetHorizontalAlignment(alignment: TCefHorizontalAlignment);
begin
if Initialized then AsLabelButton.SetHorizontalAlignment(alignment);
end;
procedure TCEFLabelButtonComponent.SetMinimumSize(const size_: TCefSize);
begin
if Initialized then AsLabelButton.SetMinimumSize(size_);
end;
procedure TCEFLabelButtonComponent.SetMaximumSize(const size_: TCefSize);
begin
if Initialized then AsLabelButton.SetMaximumSize(size_);
end;
{$IFDEF FPC}
procedure Register;
begin
{$I res/tceflabelbuttoncomponent.lrs}
RegisterComponents('Chromium Views Framework', [TCEFLabelButtonComponent]);
end;
{$ENDIF}
end.