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asl.pas
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Pascal/Delphi Source File
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2000-01-01
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{
This file is part of the Free Pascal run time library.
A file in Amiga system run time library.
Copyright (c) 1998-2000 by Nils Sjoholm
member of the Amiga RTL development team.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
{
History:
Found a bug in tFileRequester, rt_ArgList had pWBArg as arg
should be pWBArgList. Fixed
27 Oct 1998.
Added autoopening of asl.library.
28 Oct 1998.
Added MessageBox for error report.
31 Jul 2000.
nils.sjoholm@mailbox.swipnet.se
}
UNIT asl;
INTERFACE
uses exec, utility, workbench, graphics;
{************************************************************************}
CONST
ASLNAME : PChar = 'asl.library';
ASL_TB = TAG_USER+$80000;
{************************************************************************}
{ Types of requesters known to ASL, used as arguments to AllocAslRequest() }
ASL_FileRequest = 0;
ASL_FontRequest = 1;
ASL_ScreenModeRequest = 2;
{****************************************************************************
*
* ASL File Requester data structures and constants
*
* This structure must only be allocated by asl.library amd is READ-ONLY!
* Control of the various fields is provided via tags when the requester
* is created with AllocAslRequest() and when it is displayed via
* AslRequest()
}
Type
pFileRequester = ^tFileRequester;
tFileRequester = record
rf_Reserved0 : Array[0..3] Of Byte;
rf_File : STRPTR; { Filename pointer }
rf_Dir : STRPTR; { Directory name pointer }
rf_Reserved1 : Array[0..9] Of Byte;
rf_LeftEdge : Integer;
rf_TopEdge : Integer; { Preferred window pos }
rf_Width : Integer;
rf_Height : Integer; { Preferred window size }
rf_Reserved2 : Array[0..1] Of Byte;
rf_NumArgs : LongInt; { A-la WB Args, FOR multiselects }
rf_ArgList : pWBArgList;
rf_UserData : Pointer; { Applihandle (you may write!!) }
rf_Reserved3 : Array[0..7] Of Byte;
rf_Pat : STRPTR; { Pattern match pointer }
END; { note - more reserved fields follow }
{ File requester tag values, used by AllocAslRequest() and AslRequest() }
const
{ Window control }
ASLFR_Window = ASL_TB+2 ; { Parent window }
ASLFR_Screen = ASL_TB+40; { Screen to open on if no window }
ASLFR_PubScreenName = ASL_TB+41; { Name of public screen }
ASLFR_PrivateIDCMP = ASL_TB+42; { Allocate private IDCMP? }
ASLFR_IntuiMsgFunc = ASL_TB+70; { Function to handle IntuiMessages }
ASLFR_SleepWindow = ASL_TB+43; { Block input in ASLFR_Window? }
ASLFR_UserData = ASL_TB+52; { What to put in fr_UserData }
{ Text display }
ASLFR_TextAttr = ASL_TB+51; { Text font to use for gadget text }
ASLFR_Locale = ASL_TB+50; { Locale ASL should use for text }
ASLFR_TitleText = ASL_TB+1 ; { Title of requester }
ASLFR_PositiveText = ASL_TB+18; { Positive gadget text }
ASLFR_NegativeText = ASL_TB+19; { Negative gadget text }
{ Initial settings }
ASLFR_InitialLeftEdge= ASL_TB+3 ; { Initial requester coordinates }
ASLFR_InitialTopEdge = ASL_TB+4 ;
ASLFR_InitialWidth = ASL_TB+5 ; { Initial requester dimensions }
ASLFR_InitialHeight = ASL_TB+6 ;
ASLFR_InitialFile = ASL_TB+8 ; { Initial contents of File gadget }
ASLFR_InitialDrawer = ASL_TB+9 ; { Initial contents of Drawer gadg. }
ASLFR_InitialPattern = ASL_TB+10; { Initial contents of Pattern gadg.}
{ Options }
ASLFR_Flags1 = ASL_TB+20; { Option flags }
ASLFR_Flags2 = ASL_TB+22; { Additional option flags }
ASLFR_DoSaveMode = ASL_TB+44; { Being used for saving? }
ASLFR_DoMultiSelect = ASL_TB+45; { Do multi-select? }
ASLFR_DoPatterns = ASL_TB+46; { Display a Pattern gadget? }
{ Filtering }
ASLFR_DrawersOnly = ASL_TB+47; { Don't display files? }
ASLFR_FilterFunc = ASL_TB+49; { Function to filter files }
ASLFR_RejectIcons = ASL_TB+60; { Display .info files? }
ASLFR_RejectPattern = ASL_TB+61; { Don't display files matching pat }
ASLFR_AcceptPattern = ASL_TB+62; { Accept only files matching pat }
ASLFR_FilterDrawers = ASL_TB+63; { Also filter drawers with patterns}
ASLFR_HookFunc = ASL_TB+7 ; { Combined callback function }
{ Flag bits for the ASLFR_Flags1 tag }
FRB_FILTERFUNC = 7;
FRB_INTUIFUNC = 6;
FRB_DOSAVEMODE = 5;
FRB_PRIVATEIDCMP = 4;
FRB_DOMULTISELECT = 3;
FRB_DOPATTERNS = 0;
FRF_FILTERFUNC = 128;
FRF_INTUIFUNC = 64;
FRF_DOSAVEMODE = 32;
FRF_PRIVATEIDCMP = 16;
FRF_DOMULTISELECT = 8;
FRF_DOPATTERNS = 1;
{ Flag bits for the ASLFR_Flags2 tag }
FRB_DRAWERSONLY = 0;
FRB_FILTERDRAWERS = 1;
FRB_REJECTICONS = 2;
FRF_DRAWERSONLY = 1;
FRF_FILTERDRAWERS = 2;
FRF_REJECTICONS = 4;
{****************************************************************************
*
* ASL Font Requester data structures and constants
*
* This structure must only be allocated by asl.library amd is READ-ONLY!
* Control of the various fields is provided via tags when the requester
* is created with AllocAslRequest() and when it is displayed via
* AslRequest()
}
Type
pFontRequester = ^tFontRequester;
tFontRequester = record
fo_Reserved0 : Array[0..7] Of Byte;
fo_Attr : tTextAttr; { Returned TextAttr }
fo_FrontPen : Byte; { Returned front pen }
fo_BackPen : Byte; { Returned back pen }
fo_DrawMode : Byte; { Returned drawing mode }
fo_Reserved1 : Byte;
fo_UserData : Pointer; { You can store your own data here }
fo_LeftEdge : Integer; { Coordinates Of requester on Exit }
fo_TopEdge : Integer;
fo_Width : Integer;
fo_Height : Integer;
fo_TAttr : tTTextAttr; { Returned TTextAttr }
end;
{ Font requester tag values, used by AllocAslRequest() AND AslRequest() }
const
{ Window control }
ASLFO_Window = ASL_TB+2 ; { Parent window }
ASLFO_Screen = ASL_TB+40; { Screen to open on if no window }
ASLFO_PubScreenName = ASL_TB+41; { Name of public screen }
ASLFO_PrivateIDCMP = ASL_TB+42; { Allocate private IDCMP? }
ASLFO_IntuiMsgFunc = ASL_TB+70; { Function to handle IntuiMessages }
ASLFO_SleepWindow = ASL_TB+43; { Block input in ASLFO_Window? }
ASLFO_UserData = ASL_TB+52; { What to put in fo_UserData }
{ Text display }
ASLFO_TextAttr = ASL_TB+51; { Text font to use for gadget text }
ASLFO_Locale = ASL_TB+50; { Locale ASL should use for text }
ASLFO_TitleText = ASL_TB+1 ; { Title of requester }
ASLFO_PositiveText = ASL_TB+18; { Positive gadget text }
ASLFO_NegativeText = ASL_TB+19; { Negative gadget text }
{ Initial settings }
ASLFO_InitialLeftEdge= ASL_TB+3 ; { Initial requester coordinates }
ASLFO_InitialTopEdge = ASL_TB+4 ;
ASLFO_InitialWidth = ASL_TB+5 ; { Initial requester dimensions }
ASLFO_InitialHeight = ASL_TB+6 ;
ASLFO_InitialName = ASL_TB+10; { Initial contents of Name gadget }
ASLFO_InitialSize = ASL_TB+11; { Initial contents of Size gadget }
ASLFO_InitialStyle = ASL_TB+12; { Initial font style }
ASLFO_InitialFlags = ASL_TB+13; { Initial font flags for TextAttr }
ASLFO_InitialFrontPen= ASL_TB+14; { Initial front pen }
ASLFO_InitialBackPen = ASL_TB+15; { Initial back pen }
ASLFO_InitialDrawMode= ASL_TB+59; { Initial draw mode }
{ Options }
ASLFO_Flags = ASL_TB+20; { Option flags }
ASLFO_DoFrontPen = ASL_TB+44; { Display Front color selector? }
ASLFO_DoBackPen = ASL_TB+45; { Display Back color selector? }
ASLFO_DoStyle = ASL_TB+46; { Display Style checkboxes? }
ASLFO_DoDrawMode = ASL_TB+47; { Display DrawMode cycle gadget? }
{ Filtering }
ASLFO_FixedWidthOnly = ASL_TB+48; { Only allow fixed-width fonts? }
ASLFO_MinHeight = ASL_TB+16; { Minimum font height to display }
ASLFO_MaxHeight = ASL_TB+17; { Maximum font height to display }
ASLFO_FilterFunc = ASL_TB+49; { Function to filter fonts }
ASLFO_HookFunc = ASL_TB+7 ; { Combined callback function }
ASLFO_MaxFrontPen = ASL_TB+66; { Max # of colors in front palette }
ASLFO_MaxBackPen = ASL_TB+67; { Max # of colors in back palette }
{ Custom additions }
ASLFO_ModeList = ASL_TB+21; { Substitute list for drawmodes }
ASLFO_FrontPens = ASL_TB+64; { Color table for front pen palette}
ASLFO_BackPens = ASL_TB+65; { Color table for back pen palette }
{ Flag bits for ASLFO_Flags tag }
FOB_DOFRONTPEN = 0;
FOB_DOBACKPEN = 1;
FOB_DOSTYLE = 2;
FOB_DODRAWMODE = 3;
FOB_FIXEDWIDTHONLY= 4;
FOB_PRIVATEIDCMP = 5;
FOB_INTUIFUNC = 6;
FOB_FILTERFUNC = 7;
FOF_DOFRONTPEN = 1;
FOF_DOBACKPEN = 2;
FOF_DOSTYLE = 4;
FOF_DODRAWMODE = 8;
FOF_FIXEDWIDTHONLY = 16;
FOF_PRIVATEIDCMP = 32;
FOF_INTUIFUNC = 64;
FOF_FILTERFUNC = 128;
{****************************************************************************
*
* ASL Screen Mode Requester data structures and constants
*
* This structure must only be allocated by asl.library and is READ-ONLY!
* Control of the various fields is provided via tags when the requester
* is created with AllocAslRequest() and when it is displayed via
* AslRequest()
}
Type
pScreenModeRequester = ^tScreenModeRequester;
tScreenModeRequester = record
sm_DisplayID : ULONG; { Display mode ID }
sm_DisplayWidth : ULONG; { Width Of display IN pixels }
sm_DisplayHeight : ULONG; { Height Of display IN pixels }
sm_DisplayDepth : word; { Number OF bit-planes OF display }
sm_OverscanType : word; { TYPE OF overscan OF display }
sm_AutoScroll : Boolean; { Display should auto-scroll? }
sm_BitMapWidth : ULONG; { Used TO create your own BitMap }
sm_BitMapHeight : ULONG;
sm_LeftEdge : Integer; { Coordinates OF requester on Exit }
sm_TopEdge : Integer;
sm_Width : Integer;
sm_Height : Integer;
sm_InfoOpened : Boolean; { Info window opened on exit? }
sm_InfoLeftEdge : Integer; { Last coordinates OF Info window }
sm_InfoTopEdge : Integer;
sm_InfoWidth : Integer;
sm_InfoHeight : Integer;
sm_UserData : Pointer; { You can store your own data here }
END;
{ An Exec list of custom modes can be added to the list of available modes.
* The DimensionInfo structure must be completely initialized, including the
* Header. See <graphics/displayinfo.h>. Custom mode ID's must be in the range
* $FFFF0000..$FFFFFFFF. Regular properties which apply to your custom modes
* can be added in the dn_PropertyFlags field. Custom properties are not
* allowed.
}
pDisplayMode = ^tDisplayMode;
tDisplayMode = record
dm_Node : tNode; { see ln_Name }
dm_DimensionInfo : tDimensionInfo; { mode description }
dm_PropertyFlags : ULONG; { applicable properties }
end;
{ ScreenMode requester tag values, used by AllocAslRequest() and AslRequest() }
const
{ Window control }
ASLSM_Window = ASL_TB+2 ; { Parent window }
ASLSM_Screen = ASL_TB+40; { Screen to open on if no window }
ASLSM_PubScreenName = ASL_TB+41; { Name of public screen }
ASLSM_PrivateIDCMP = ASL_TB+42; { Allocate private IDCMP? }
ASLSM_IntuiMsgFunc = ASL_TB+70; { Function to handle IntuiMessages }
ASLSM_SleepWindow = ASL_TB+43; { Block input in ASLSM_Window? }
ASLSM_UserData = ASL_TB+52; { What to put in sm_UserData }
{ Text display }
ASLSM_TextAttr = ASL_TB+51; { Text font to use for gadget text }
ASLSM_Locale = ASL_TB+50; { Locale ASL should use for text }
ASLSM_TitleText = ASL_TB+1 ; { Title of requester }
ASLSM_PositiveText = ASL_TB+18; { Positive gadget text }
ASLSM_NegativeText = ASL_TB+19; { Negative gadget text }
{ Initial settings }
ASLSM_InitialLeftEdge = ASL_TB+3 ; { Initial requester coordinates }
ASLSM_InitialTopEdge = ASL_TB+4 ;
ASLSM_InitialWidth = ASL_TB+5 ; { Initial requester dimensions }
ASLSM_InitialHeight = ASL_TB+6 ;
ASLSM_InitialDisplayID = ASL_TB+100; { Initial display mode id }
ASLSM_InitialDisplayWidth = ASL_TB+101; { Initial display width }
ASLSM_InitialDisplayHeight = ASL_TB+102; { Initial display height }
ASLSM_InitialDisplayDepth = ASL_TB+103; { Initial display depth }
ASLSM_InitialOverscanType = ASL_TB+104; { Initial type of overscan }
ASLSM_InitialAutoScroll = ASL_TB+105; { Initial autoscroll setting }
ASLSM_InitialInfoOpened = ASL_TB+106; { Info wndw initially opened? }
ASLSM_InitialInfoLeftEdge = ASL_TB+107; { Initial Info window coords. }
ASLSM_InitialInfoTopEdge = ASL_TB+108;
{ Options }
ASLSM_DoWidth = ASL_TB+109; { Display Width gadget? }
ASLSM_DoHeight = ASL_TB+110; { Display Height gadget? }
ASLSM_DoDepth = ASL_TB+111; { Display Depth gadget? }
ASLSM_DoOverscanType = ASL_TB+112; { Display Overscan Type gadget? }
ASLSM_DoAutoScroll = ASL_TB+113; { Display AutoScroll gadget? }
{ Filtering }
ASLSM_PropertyFlags = ASL_TB+114; { Must have these Property flags }
ASLSM_PropertyMask = ASL_TB+115; { Only these should be looked at }
ASLSM_MinWidth = ASL_TB+116; { Minimum display width to allow }
ASLSM_MaxWidth = ASL_TB+117; { Maximum display width to allow }
ASLSM_MinHeight = ASL_TB+118; { Minimum display height to allow }
ASLSM_MaxHeight = ASL_TB+119; { Maximum display height to allow }
ASLSM_MinDepth = ASL_TB+120; { Minimum display depth }
ASLSM_MaxDepth = ASL_TB+121; { Maximum display depth }
ASLSM_FilterFunc = ASL_TB+122; { Function to filter mode id's }
{ Custom additions }
ASLSM_CustomSMList = ASL_TB+123; { Exec list of struct DisplayMode }
{****************************************************************************
*
* Obsolete ASL definitions, here for source code compatibility only.
* Please do NOT use in new code.
*
* ASL_V38_NAMES_ONLY to remove these older names
}
Const
ASL_Dummy = (TAG_USER + $80000);
ASL_Hail = ASL_Dummy+1 ;
ASL_Window = ASL_Dummy+2 ;
ASL_LeftEdge = ASL_Dummy+3 ;
ASL_TopEdge = ASL_Dummy+4 ;
ASL_Width = ASL_Dummy+5 ;
ASL_Height = ASL_Dummy+6 ;
ASL_HookFunc = ASL_Dummy+7 ;
ASL_File = ASL_Dummy+8 ;
ASL_Dir = ASL_Dummy+9 ;
ASL_FontName = ASL_Dummy+10;
ASL_FontHeight = ASL_Dummy+11;
ASL_FontStyles = ASL_Dummy+12;
ASL_FontFlags = ASL_Dummy+13;
ASL_FrontPen = ASL_Dummy+14;
ASL_BackPen = ASL_Dummy+15;
ASL_MinHeight = ASL_Dummy+16;
ASL_MaxHeight = ASL_Dummy+17;
ASL_OKText = ASL_Dummy+18;
ASL_CancelText = ASL_Dummy+19;
ASL_FuncFlags = ASL_Dummy+20;
ASL_ModeList = ASL_Dummy+21;
ASL_ExtFlags1 = ASL_Dummy+22;
ASL_Pattern = ASL_FontName;
{ remember what I said up there? Do not use these anymore! }
FILB_DOWILDFUNC = 7;
FILB_DOMSGFUNC = 6;
FILB_SAVE = 5;
FILB_NEWIDCMP = 4;
FILB_MULTISELECT = 3;
FILB_PATGAD = 0;
FILF_DOWILDFUNC = 128;
FILF_DOMSGFUNC = 64;
FILF_SAVE = 32;
FILF_NEWIDCMP = 16;
FILF_MULTISELECT = 8;
FILF_PATGAD = 1;
FIL1B_NOFILES = 0;
FIL1B_MATCHDIRS = 1;
FIL1F_NOFILES = 1;
FIL1F_MATCHDIRS = 2;
FONB_FRONTCOLOR = 0;
FONB_BACKCOLOR = 1;
FONB_STYLES = 2;
FONB_DRAWMODE = 3;
FONB_FIXEDWIDTH = 4;
FONB_NEWIDCMP = 5;
FONB_DOMSGFUNC = 6;
FONB_DOWILDFUNC = 7;
FONF_FRONTCOLOR = 1;
FONF_BACKCOLOR = 2;
FONF_STYLES = 4;
FONF_DRAWMODE = 8;
FONF_FIXEDWIDTH = 16;
FONF_NEWIDCMP = 32;
FONF_DOMSGFUNC = 64;
FONF_DOWILDFUNC = 128;
VAR AslBase : pLibrary;
asl_exit : Pointer;
FUNCTION AllocAslRequest(reqType : ULONG; tagList : pTagItem) : POINTER;
FUNCTION AllocFileRequest : pFileRequester;
FUNCTION AslRequest(requester : POINTER; tagList : pTagItem) : BOOLEAN;
PROCEDURE FreeAslRequest(requester : POINTER);
PROCEDURE FreeFileRequest(fileReq : pFileRequester);
FUNCTION RequestFile(fileReq : pFileRequester) : BOOLEAN;
IMPLEMENTATION
uses msgbox;
FUNCTION AllocAslRequest(reqType : ULONG; tagList : pTagItem) : POINTER;
BEGIN
ASM
MOVE.L A6,-(A7)
MOVE.L reqType,D0
MOVEA.L tagList,A0
MOVEA.L AslBase,A6
JSR -048(A6)
MOVEA.L (A7)+,A6
MOVE.L D0,@RESULT
END;
END;
FUNCTION AllocFileRequest : pFileRequester;
BEGIN
ASM
MOVE.L A6,-(A7)
MOVEA.L AslBase,A6
JSR -030(A6)
MOVEA.L (A7)+,A6
MOVE.L D0,@RESULT
END;
END;
FUNCTION AslRequest(requester : POINTER; tagList : pTagItem) : BOOLEAN;
BEGIN
ASM
MOVE.L A6,-(A7)
MOVEA.L requester,A0
MOVEA.L tagList,A1
MOVEA.L AslBase,A6
JSR -060(A6)
MOVEA.L (A7)+,A6
TST.W D0
BEQ.B @end
MOVEQ #1,D0
@end: MOVE.B D0,@RESULT
END;
END;
PROCEDURE FreeAslRequest(requester : POINTER);
BEGIN
ASM
MOVE.L A6,-(A7)
MOVEA.L requester,A0
MOVEA.L AslBase,A6
JSR -054(A6)
MOVEA.L (A7)+,A6
END;
END;
PROCEDURE FreeFileRequest(fileReq : pFileRequester);
BEGIN
ASM
MOVE.L A6,-(A7)
MOVEA.L fileReq,A0
MOVEA.L AslBase,A6
JSR -036(A6)
MOVEA.L (A7)+,A6
END;
END;
FUNCTION RequestFile(fileReq : pFileRequester) : BOOLEAN;
BEGIN
ASM
MOVE.L A6,-(A7)
MOVEA.L fileReq,A0
MOVEA.L AslBase,A6
JSR -042(A6)
MOVEA.L (A7)+,A6
TST.W D0
BEQ.B @end
MOVEQ #1,D0
@end: MOVE.B D0,@RESULT
END;
END;
procedure CloseAslLibrary;
begin
ExitProc := asl_exit;
if AslBase <> nil then begin
CloseLibrary(AslBase);
AslBase := nil;
end;
end;
const
VERSION : string[2] = '37';
begin
AslBase := nil;
AslBase := OpenLibrary(ASLNAME,37);
if AslBase <> nil then begin
asl_exit := ExitProc;
ExitProc := @CloseAslLibrary;
end else begin
MessageBox('FPC Pascal Error',
'Can''t open asl.library version ' +
VERSION +
chr(10) +
'Deallocating resources and closing down',
'Oops');
halt(20);
end;
END. (* UNIT ASL *)