| 1 | unit BaseWin;
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| 2 |
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| 3 | interface
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| 4 |
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| 5 | uses
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| 6 | ScreenTools, LCLIntf, LCLType, SysUtils, Classes, Graphics, Controls, Forms,
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| 7 | DrawDlg;
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| 8 |
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| 9 | type
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| 10 | TShowNewContent = procedure (NewMode: Integer; HelpContext: string) of object;
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| 11 |
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| 12 | { TBufferedDrawDlg }
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| 13 |
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| 14 | TBufferedDrawDlg = class(TDrawDlg)
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| 15 | public
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| 16 | UserLeft, UserTop: integer;
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| 17 | constructor Create(AOwner: TComponent); override;
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| 18 | destructor Destroy; override;
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| 19 | procedure FormClose(Sender: TObject; var Action: TCloseAction);
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| 20 | procedure FormPaint(Sender: TObject);
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| 21 | procedure FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
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| 22 | procedure FormDeactivate(Sender: TObject);
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| 23 | procedure SmartUpdateContent(ImmUpdate: boolean = false);
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| 24 | procedure StayOnTop_Workaround;
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| 25 | protected
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| 26 | FWindowMode, ModalFrameIndent: integer;
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| 27 | HelpContext: string;
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| 28 | procedure ShowNewContent(NewMode: integer; forceclose: boolean = false);
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| 29 | procedure MarkUsedOffscreen(xMax, yMax: integer);
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| 30 | procedure OffscreenPaint; virtual;
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| 31 | procedure VPaint; virtual;
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| 32 | public
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| 33 | UsedOffscreenWidth, UsedOffscreenHeight: integer;
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| 34 | Offscreen: TBitmap;
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| 35 | OffscreenUser: TForm;
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| 36 | property WindowMode: integer read FWindowMode;
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| 37 | end;
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| 38 |
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| 39 | TFramedDlg = class(TBufferedDrawDlg)
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| 40 | public
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| 41 | constructor Create(AOwner: TComponent); override;
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| 42 | procedure FormCreate(Sender: TObject);
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| 43 | procedure SmartInvalidate; override;
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| 44 | protected
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| 45 | CaptionLeft: Integer;
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| 46 | CaptionRight: Integer;
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| 47 | InnerWidth: Integer;
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| 48 | InnerHeight: integer;
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| 49 | WideBottom: Boolean;
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| 50 | FullCaption: Boolean;
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| 51 | TexOverride: Boolean;
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| 52 | ModalIndication: Boolean;
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| 53 | procedure InitWindowRegion;
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| 54 | procedure VPaint; override;
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| 55 | procedure FillOffscreen(Left, Top, Width, Height: integer);
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| 56 | end;
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| 57 |
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| 58 | var
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| 59 | ShowNewContentProc: TShowNewContent;
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| 60 | MainFormKeyDown: TKeyEvent;
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| 61 |
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| 62 | const
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| 63 | // window modes
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| 64 | wmNone = 0;
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| 65 | wmModal = $1;
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| 66 | wmPersistent = $2;
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| 67 | wmSubmodal = $3;
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| 68 |
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| 69 | yUnused = 161;
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| 70 | NarrowFrame = 11;
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| 71 | WideFrame = 36;
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| 72 | SideFrame = 9;
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| 73 |
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| 74 | procedure CreateOffscreen(var Offscreen: TBitmap);
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| 75 | procedure Register;
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| 76 |
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| 77 |
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| 78 | implementation
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| 79 |
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| 80 | uses
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| 81 | ButtonBase, Area;
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| 82 |
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| 83 | procedure Register;
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| 84 | begin
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| 85 | RegisterNoIcon([TBufferedDrawDlg]);
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| 86 | RegisterNoIcon([TFramedDlg]);
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| 87 | end;
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| 88 |
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| 89 |
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| 90 | constructor TBufferedDrawDlg.Create(AOwner: TComponent);
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| 91 | begin
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| 92 | BaseWin.CreateOffscreen(Offscreen);
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| 93 | OnClose := FormClose;
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| 94 | OnPaint := FormPaint;
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| 95 | OnKeyDown := FormKeyDown;
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| 96 | OnDeactivate := FormDeactivate;
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| 97 | inherited;
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| 98 | FWindowMode := wmNone;
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| 99 | HelpContext := 'CONCEPTS';
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| 100 | TitleHeight := WideFrame;
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| 101 | ModalFrameIndent := 45;
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| 102 | UserLeft := (Screen.Width - Width) div 2;
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| 103 | UserTop := (Screen.Height - Height) div 2;
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| 104 | end;
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| 105 |
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| 106 | destructor TBufferedDrawDlg.Destroy;
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| 107 | begin
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| 108 | Offscreen.Free;
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| 109 | inherited Destroy;
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| 110 | end;
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| 111 |
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| 112 | procedure TBufferedDrawDlg.FormClose(Sender: TObject; var Action: TCloseAction);
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| 113 | begin
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| 114 | if FWindowMode = wmPersistent then
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| 115 | begin
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| 116 | UserLeft := Left;
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| 117 | UserTop := Top
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| 118 | end;
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| 119 | if OffscreenUser = self then
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| 120 | OffscreenUser := nil;
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| 121 | end;
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| 122 |
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| 123 | procedure TBufferedDrawDlg.FormPaint(Sender: TObject);
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| 124 | begin
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| 125 | if OffscreenUser <> self then
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| 126 | OffscreenPaint;
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| 127 | VPaint;
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| 128 | end;
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| 129 |
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| 130 | procedure TBufferedDrawDlg.FormKeyDown(Sender: TObject; var Key: Word;
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| 131 | Shift: TShiftState);
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| 132 | begin
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| 133 | if Key = VK_ESCAPE then
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| 134 | begin
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| 135 | if fsModal in FormState then
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| 136 | ModalResult := mrCancel
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| 137 | end
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| 138 | else if Key = VK_RETURN then
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| 139 | begin
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| 140 | if fsModal in FormState then
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| 141 | ModalResult := mrOK
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| 142 | end
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| 143 | else if Key = VK_F1 then begin
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| 144 | if Assigned(ShowNewContentProc) then
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| 145 | ShowNewContentProc(FWindowMode or wmPersistent, HelpContext);
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| 146 | end else if FWindowMode = wmPersistent then begin
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| 147 | if Assigned(MainFormKeyDown) then
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| 148 | MainFormKeyDown(Sender, Key, Shift);
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| 149 | end;
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| 150 | end;
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| 151 |
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| 152 | procedure TBufferedDrawDlg.FormDeactivate(Sender: TObject);
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| 153 | begin
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| 154 | if FWindowMode = wmSubmodal then
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| 155 | Close
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| 156 | end;
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| 157 |
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| 158 | procedure TBufferedDrawDlg.OffscreenPaint;
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| 159 | begin
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| 160 | if (OffscreenUser <> nil) and (OffscreenUser <> self) then
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| 161 | OffscreenUser.Update; // complete working with old owner to prevent rebound
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| 162 | OffscreenUser := self;
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| 163 | end;
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| 164 |
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| 165 | procedure TBufferedDrawDlg.VPaint;
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| 166 | begin
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| 167 | BitBltCanvas(Canvas, 0, 0, ClientWidth, ClientHeight, Offscreen.Canvas, 0, 0);
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| 168 | end;
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| 169 |
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| 170 | procedure TBufferedDrawDlg.ShowNewContent(NewMode: integer;
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| 171 | forceclose: boolean);
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| 172 | begin
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| 173 | if Visible then
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| 174 | begin
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| 175 | assert((NewMode = wmModal) or (FWindowMode <> wmModal));
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| 176 | // don't make modal window non-modal
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| 177 | if (NewMode = wmModal) and (forceclose or (FWindowMode <> wmModal)) then
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| 178 | begin // make modal
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| 179 | UserLeft := Left;
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| 180 | UserTop := Top;
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| 181 | Visible := false;
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| 182 | FWindowMode := NewMode;
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| 183 | ShowModal;
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| 184 | end
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| 185 | else if forceclose then
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| 186 | begin // make modal
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| 187 | Visible := false;
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| 188 | FWindowMode := NewMode;
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| 189 | Left := UserLeft;
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| 190 | Top := UserTop;
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| 191 | Show;
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| 192 | end
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| 193 | else
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| 194 | begin
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| 195 | FWindowMode := NewMode;
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| 196 | if @OnShow <> nil then
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| 197 | OnShow(nil);
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| 198 | Invalidate;
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| 199 | BringToFront
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| 200 | end
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| 201 | end
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| 202 | else
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| 203 | begin
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| 204 | FWindowMode := NewMode;
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| 205 | Left := UserLeft;
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| 206 | Top := UserTop;
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| 207 | if FWindowMode = wmModal then
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| 208 | ShowModal
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| 209 | else
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| 210 | Show
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| 211 | end
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| 212 | end;
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| 213 |
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| 214 | procedure TBufferedDrawDlg.SmartUpdateContent(ImmUpdate: boolean);
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| 215 | begin
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| 216 | if Visible then
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| 217 | begin
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| 218 | OffscreenPaint;
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| 219 | SmartInvalidate;
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| 220 | if ImmUpdate then
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| 221 | Update;
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| 222 | end;
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| 223 | end;
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| 224 |
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| 225 | procedure TBufferedDrawDlg.MarkUsedOffscreen(xMax, yMax: integer);
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| 226 | begin
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| 227 | if xMax > UsedOffscreenWidth then
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| 228 | UsedOffscreenWidth := xMax;
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| 229 | if yMax > UsedOffscreenHeight then
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| 230 | UsedOffscreenHeight := yMax;
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| 231 | end;
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| 232 |
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| 233 | procedure TBufferedDrawDlg.StayOnTop_Workaround;
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| 234 | // stayontop doesn't work when window is shown for the first time
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| 235 | // after application lost focus, so show all stayontop-windows in first turn
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| 236 | var
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| 237 | SaveOnShow, SaveOnPaint: TNotifyEvent;
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| 238 | begin
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| 239 | Top := Screen.Height;
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| 240 | SaveOnShow := OnShow;
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| 241 | OnShow := nil;
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| 242 | SaveOnPaint := OnPaint;
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| 243 | OnPaint := nil;
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| 244 | FWindowMode := wmNone;
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| 245 | Show;
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| 246 | Hide;
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| 247 | OnShow := SaveOnShow;
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| 248 | OnPaint := SaveOnPaint;
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| 249 | end;
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| 250 |
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| 251 | constructor TFramedDlg.Create;
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| 252 | begin
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| 253 | OnCreate := FormCreate;
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| 254 | inherited;
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| 255 | end;
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| 256 |
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| 257 | procedure TFramedDlg.FormCreate(Sender: TObject);
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| 258 | begin
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| 259 | CaptionLeft := 0;
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| 260 | CaptionRight := $FFFF;
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| 261 | WideBottom := false;
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| 262 | FullCaption := true;
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| 263 | TexOverride := false;
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| 264 | ModalIndication := true;
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| 265 | Canvas.Brush.Style := bsClear;
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| 266 | InnerWidth := Width - 2 * SideFrame;
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| 267 | InnerHeight := Height - TitleHeight - NarrowFrame;
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| 268 | end;
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| 269 |
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| 270 | procedure TFramedDlg.SmartInvalidate;
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| 271 | var
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| 272 | i, BottomFrame: integer;
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| 273 | r0, r1: HRgn;
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| 274 | begin
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| 275 | if WideBottom then
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| 276 | BottomFrame := WideFrame
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| 277 | else
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| 278 | BottomFrame := NarrowFrame;
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| 279 | r0 := CreateRectRgn(SideFrame, TitleHeight, ClientWidth - SideFrame,
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| 280 | ClientHeight - BottomFrame);
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| 281 | for i := 0 to ControlCount - 1 do
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| 282 | if not(Controls[i] is TArea) and Controls[i].Visible then
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| 283 | begin
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| 284 | with Controls[i].BoundsRect do
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| 285 | r1 := CreateRectRgn(Left, Top, Right, Bottom);
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| 286 | CombineRgn(r0, r0, r1, RGN_DIFF);
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| 287 | DeleteObject(r1);
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| 288 | end;
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| 289 | InvalidateRgn(Handle, r0, false);
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| 290 | DeleteObject(r0);
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| 291 | end;
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| 292 |
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| 293 | procedure TFramedDlg.VPaint;
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| 294 |
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| 295 | procedure CornerFrame(x0, y0, x1, y1: integer);
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| 296 | begin
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| 297 | Frame(Canvas, x0 + 1, y0 + 1, x1 - 2, y1 - 2, MainTexture.clBevelLight,
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| 298 | MainTexture.clBevelShade);
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| 299 | Frame(Canvas, x0 + 2, y0 + 2, x1 - 3, y1 - 3, MainTexture.clBevelLight,
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| 300 | MainTexture.clBevelShade);
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| 301 | Corner(Canvas, x0 + 1, y0 + 1, 0, MainTexture);
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| 302 | Corner(Canvas, x1 - 9, y0 + 1, 1, MainTexture);
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| 303 | Corner(Canvas, x0 + 1, y1 - 9, 2, MainTexture);
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| 304 | Corner(Canvas, x1 - 9, y1 - 9, 3, MainTexture);
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| 305 | end;
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| 306 |
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| 307 | var
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| 308 | i, l, FrameTop, FrameBottom, InnerBottom, Cut, xTexOffset,
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| 309 | yTexOffset: integer;
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| 310 | R: TRect;
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| 311 | begin
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| 312 | if not TexOverride then
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| 313 | begin
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| 314 | if (FWindowMode = wmModal) and ModalIndication then
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| 315 | MainTexture := MainTexture
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| 316 | else
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| 317 | MainTexture := MainTexture;
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| 318 | MainTexture := MainTexture
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| 319 | end;
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| 320 | Canvas.Font.Assign(UniFont[ftCaption]);
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| 321 | l := BiColorTextWidth(Canvas, Caption);
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| 322 | Cut := (ClientWidth - l) div 2;
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| 323 | xTexOffset := (wMaintexture - ClientWidth) div 2;
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| 324 | yTexOffset := (hMaintexture - ClientHeight) div 2;
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| 325 | if WideBottom then
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| 326 | InnerBottom := ClientHeight - WideFrame
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| 327 | else
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| 328 | InnerBottom := ClientHeight - NarrowFrame;
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| 329 | if FullCaption then
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| 330 | begin
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| 331 | FrameTop := 0;
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| 332 | FrameBottom := ClientHeight
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| 333 | end
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| 334 | else
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| 335 | begin
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| 336 | FrameTop := TitleHeight - NarrowFrame;
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| 337 | if WideBottom then
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| 338 | FrameBottom := ClientHeight - (WideFrame - NarrowFrame)
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| 339 | else
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| 340 | FrameBottom := ClientHeight
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| 341 | end;
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| 342 | Fill(Canvas, 3, InnerBottom + 1, ClientWidth - 6, ClientHeight - InnerBottom -
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| 343 | 4, xTexOffset, yTexOffset);
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| 344 | Fill(Canvas, 3, TitleHeight - 2, SideFrame - 3, InnerBottom - TitleHeight + 4,
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| 345 | xTexOffset, yTexOffset);
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| 346 | Fill(Canvas, ClientWidth - SideFrame, TitleHeight - 2, SideFrame - 3,
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| 347 | InnerBottom - TitleHeight + 4, xTexOffset, yTexOffset);
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| 348 | Frame(Canvas, 0, FrameTop, ClientWidth - 1, FrameBottom - 1, 0, 0);
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| 349 | Frame(Canvas, SideFrame - 1, TitleHeight - 1, ClientWidth - SideFrame,
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| 350 | InnerBottom, MainTexture.clBevelShade, MainTexture.clBevelLight);
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| 351 | // RFrame(Canvas,SideFrame-2,TitleHeight-2,ClientWidth-SideFrame+1,
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| 352 | // InnerBottom+1,MainTexture.clBevelShade,MainTexture.clBevelLight);
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| 353 | if FullCaption then
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| 354 | begin
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| 355 | if (FWindowMode <> wmModal) or not ModalIndication then
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| 356 | begin
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| 357 | Fill(Canvas, 3, 3 + FrameTop, ClientWidth - 6, TitleHeight - FrameTop - 4,
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| 358 | xTexOffset, yTexOffset);
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| 359 | CornerFrame(0, FrameTop, ClientWidth, FrameBottom);
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| 360 | end
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| 361 | else
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| 362 | with Canvas do
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| 363 | begin
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| 364 | Fill(Canvas, 3 + ModalFrameIndent, 3 + FrameTop,
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| 365 | ClientWidth - 6 - 2 * ModalFrameIndent, TitleHeight - FrameTop - 4,
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| 366 | xTexOffset, yTexOffset);
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| 367 | Fill(Canvas, ClientWidth - 3 - ModalFrameIndent, 3 + FrameTop,
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| 368 | ModalFrameIndent, TitleHeight - FrameTop - 4, xTexOffset, yTexOffset);
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| 369 | Fill(Canvas, 3, 3 + FrameTop, ModalFrameIndent, TitleHeight - FrameTop -
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| 370 | 4, xTexOffset, yTexOffset);
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| 371 | CornerFrame(0, FrameTop, ClientWidth, FrameBottom);
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| 372 | Pen.Color := MainTexture.clBevelShade;
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| 373 | MoveTo(3 + ModalFrameIndent, 2);
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| 374 | LineTo(3 + ModalFrameIndent, TitleHeight);
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| 375 | Pen.Color := MainTexture.clBevelShade;
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| 376 | MoveTo(4 + ModalFrameIndent, TitleHeight - 1);
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| 377 | LineTo(ClientWidth - 4 - ModalFrameIndent, TitleHeight - 1);
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| 378 | LineTo(ClientWidth - 4 - ModalFrameIndent, 1);
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| 379 | Pen.Color := MainTexture.clBevelLight;
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| 380 | MoveTo(ClientWidth - 5 - ModalFrameIndent, 2);
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| 381 | LineTo(4 + ModalFrameIndent, 2);
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| 382 | LineTo(4 + ModalFrameIndent, TitleHeight);
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| 383 | MoveTo(ClientWidth - 4 - ModalFrameIndent, 1);
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| 384 | LineTo(3 + ModalFrameIndent, 1);
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| 385 | Pen.Color := MainTexture.clBevelLight;
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| 386 | MoveTo(ClientWidth - 3 - ModalFrameIndent, 3);
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| 387 | LineTo(ClientWidth - 3 - ModalFrameIndent, TitleHeight);
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| 388 | end
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| 389 | end
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| 390 | else
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| 391 | begin
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| 392 | Fill(Canvas, 3, 3 + FrameTop, ClientWidth - 6, TitleHeight - FrameTop - 4,
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| 393 | xTexOffset, yTexOffset);
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| 394 | CornerFrame(0, FrameTop, ClientWidth, FrameBottom);
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| 395 |
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| 396 | Frame(Canvas, CaptionLeft, 0, ClientWidth - CaptionLeft - 1,
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| 397 | FrameTop, 0, 0);
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| 398 | Fill(Canvas, CaptionLeft + 3, 3, ClientWidth - 2 * (CaptionLeft) - 6,
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| 399 | TitleHeight - 4, xTexOffset, yTexOffset);
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| 400 |
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| 401 | Frame(Canvas, CaptionLeft + 1, 0 + 1, ClientWidth - CaptionLeft - 2,
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| 402 | TitleHeight - 1, MainTexture.clBevelLight, MainTexture.clBevelShade);
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| 403 | Frame(Canvas, CaptionLeft + 2, 0 + 2, ClientWidth - CaptionLeft - 3,
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| 404 | TitleHeight - 1, MainTexture.clBevelLight, MainTexture.clBevelShade);
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| 405 | Corner(Canvas, CaptionLeft + 1, 0 + 1, 0, MainTexture);
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| 406 | Corner(Canvas, ClientWidth - CaptionLeft - 9, 0 + 1, 1, MainTexture);
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| 407 |
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| 408 | with Canvas do
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| 409 | begin
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| 410 | Pen.Color := MainTexture.clBevelShade;
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| 411 | MoveTo(CaptionLeft + 1, FrameTop + 2);
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| 412 | LineTo(CaptionLeft + 1, TitleHeight);
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| 413 | Pen.Color := MainTexture.clBevelLight;
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| 414 | MoveTo(ClientWidth - CaptionLeft - 2, FrameTop + 2);
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| 415 | LineTo(ClientWidth - CaptionLeft - 2, TitleHeight);
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| 416 | end;
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| 417 | if WideBottom then
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| 418 | begin
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| 419 | Frame(Canvas, CaptionLeft, FrameBottom, ClientWidth - CaptionLeft - 1,
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| 420 | ClientHeight - 1, 0, 0);
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| 421 | Fill(Canvas, CaptionLeft + 3, ClientHeight - 3 - (WideFrame - 5),
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| 422 | ClientWidth - 2 * (CaptionLeft) - 6, WideFrame - 5, xTexOffset,
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| 423 | yTexOffset);
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| 424 | Frame(Canvas, CaptionLeft + 1, ClientHeight - WideFrame - 1 + 1,
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| 425 | ClientWidth - CaptionLeft - 2, ClientHeight - 2,
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| 426 | MainTexture.clBevelLight, MainTexture.clBevelShade);
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| 427 | Frame(Canvas, CaptionLeft + 2, ClientHeight - WideFrame - 1 + 1,
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| 428 | ClientWidth - CaptionLeft - 3, ClientHeight - 3,
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| 429 | MainTexture.clBevelLight, MainTexture.clBevelShade);
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| 430 | Corner(Canvas, CaptionLeft + 1, ClientHeight - 9, 2, MainTexture);
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|---|
| 431 | Corner(Canvas, ClientWidth - CaptionLeft - 9, ClientHeight - 9, 3,
|
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| 432 | MainTexture);
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|---|
| 433 |
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|---|
| 434 | with Canvas do
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|---|
| 435 | begin
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|---|
| 436 | Pen.Color := MainTexture.clBevelShade;
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|---|
| 437 | MoveTo(CaptionLeft + 1, ClientHeight - WideFrame);
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|---|
| 438 | LineTo(CaptionLeft + 1, FrameBottom - 2);
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|---|
| 439 | Pen.Color := MainTexture.clBevelLight;
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|---|
| 440 | MoveTo(ClientWidth - CaptionLeft - 2, ClientHeight - WideFrame);
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|---|
| 441 | LineTo(ClientWidth - CaptionLeft - 2, FrameBottom - 2);
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|---|
| 442 | end;
|
|---|
| 443 | end
|
|---|
| 444 | end;
|
|---|
| 445 | RisedTextOut(Canvas, Cut - 1, 7, Caption);
|
|---|
| 446 |
|
|---|
| 447 | for i := 0 to ControlCount - 1 do
|
|---|
| 448 | if Controls[i].Visible and (Controls[i] is TButtonBase) then
|
|---|
| 449 | begin
|
|---|
| 450 | R := Controls[i].BoundsRect;
|
|---|
| 451 | if (R.Bottom <= TitleHeight) or (R.Top >= InnerBottom) then
|
|---|
| 452 | BtnFrame(Canvas, R, MainTexture);
|
|---|
| 453 | end;
|
|---|
| 454 |
|
|---|
| 455 | BitBltCanvas(Canvas, SideFrame, TitleHeight, ClientWidth - 2 * SideFrame,
|
|---|
| 456 | InnerBottom - TitleHeight, Offscreen.Canvas, 0, 0);
|
|---|
| 457 | end;
|
|---|
| 458 |
|
|---|
| 459 | procedure TFramedDlg.InitWindowRegion;
|
|---|
| 460 | var
|
|---|
| 461 | r0, r1: HRgn;
|
|---|
| 462 | begin
|
|---|
| 463 | if FullCaption then
|
|---|
| 464 | exit;
|
|---|
| 465 | r0 := CreateRectRgn(0, 0, ClientWidth, ClientHeight);
|
|---|
| 466 | r1 := CreateRectRgn(0, 0, CaptionLeft, TitleHeight - NarrowFrame);
|
|---|
| 467 | CombineRgn(r0, r0, r1, RGN_DIFF);
|
|---|
| 468 | // DeleteObject(r1);
|
|---|
| 469 | r1 := CreateRectRgn(ClientWidth - CaptionLeft, 0, ClientWidth,
|
|---|
| 470 | TitleHeight - NarrowFrame);
|
|---|
| 471 | CombineRgn(r0, r0, r1, RGN_DIFF);
|
|---|
| 472 | // DeleteObject(r1);
|
|---|
| 473 | if WideBottom then
|
|---|
| 474 | begin
|
|---|
| 475 | r1 := CreateRectRgn(0, ClientHeight - (WideFrame - NarrowFrame),
|
|---|
| 476 | CaptionLeft, ClientHeight);
|
|---|
| 477 | CombineRgn(r0, r0, r1, RGN_DIFF);
|
|---|
| 478 | // DeleteObject(r1);
|
|---|
| 479 | r1 := CreateRectRgn(ClientWidth - CaptionLeft,
|
|---|
| 480 | ClientHeight - (WideFrame - NarrowFrame), ClientWidth, ClientHeight);
|
|---|
| 481 | CombineRgn(r0, r0, r1, RGN_DIFF);
|
|---|
| 482 | // DeleteObject(r1);
|
|---|
| 483 | end;
|
|---|
| 484 | SetWindowRgn(Handle, r0, false);
|
|---|
| 485 | // DeleteObject(r0); // causes crash with Windows 95
|
|---|
| 486 | end;
|
|---|
| 487 |
|
|---|
| 488 | procedure TFramedDlg.FillOffscreen(Left, Top, Width, Height: integer);
|
|---|
| 489 | begin
|
|---|
| 490 | Fill(Offscreen.Canvas, Left, Top, Width, Height,
|
|---|
| 491 | SideFrame + (wMaintexture - ClientWidth) div 2,
|
|---|
| 492 | TitleHeight + (hMaintexture - ClientHeight) div 2);
|
|---|
| 493 | end;
|
|---|
| 494 |
|
|---|
| 495 | procedure CreateOffscreen(var Offscreen: TBitmap);
|
|---|
| 496 | begin
|
|---|
| 497 | if Offscreen <> nil then
|
|---|
| 498 | exit;
|
|---|
| 499 | Offscreen := TBitmap.Create;
|
|---|
| 500 | Offscreen.PixelFormat := pf24bit;
|
|---|
| 501 | if Screen.Height - yUnused < 480 then
|
|---|
| 502 | Offscreen.SetSize(Screen.Width, 480)
|
|---|
| 503 | else
|
|---|
| 504 | Offscreen.SetSize(Screen.Width, Screen.Height - yUnused);
|
|---|
| 505 | Offscreen.Canvas.FillRect(0, 0, Offscreen.Width, OffScreen.Height);
|
|---|
| 506 | Offscreen.Canvas.Brush.Style := bsClear;
|
|---|
| 507 | end;
|
|---|
| 508 |
|
|---|
| 509 | initialization
|
|---|
| 510 |
|
|---|
| 511 | ShowNewContentProc := nil;
|
|---|
| 512 | MainFormKeyDown := nil;
|
|---|
| 513 |
|
|---|
| 514 | finalization
|
|---|
| 515 |
|
|---|
| 516 | end.
|
|---|
