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The C Users' Group Library 1994 August
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v_03_02
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3n02028a
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1991-11-17
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{Font Preview - 1.5 Program Copyright (C) Doug Overmyer 7/26/91}
program FontPreview;
{$S-} {$R PREVIEW.RES}{$R-}
uses WinTypes, WinProcs, WinDos, Strings, WObjects,StdDlgs,Fonts,Buttons;
const
id_But1 = 201; {Ownerdraw Button 1 }
id_But2 = 202; { " 2 }
id_But3 = 203; { " 3 }
id_But4 = 204; { " 4 }
id_But5 = 205; { " 5 }
id_D1Lb1 = 301; {List box in Dlg1 }
id_St1 = 401; {Static text 1 }
id_St2 = 402; {Static text 2 }
id_St3 = 403; {Static text 3 }
id_St4 = 404; {Static text 4 }
id_D3Setup = 501; {Setup button in Dlg3}
id_D3EC1 = 506; {Edit control in Dlg3}
id_D3OK = 521; {OK button in Dlg3 }
id_lb2 = 601; {FBox list box control}
idm_About = 801; {menu id for PV_About menu}
idm_RunCP = 802; {menu id for run control panel}
idm_RunATM = 803; {menu id for run ATM }
type
TPVApplication = object(TApplication)
procedure InitMainWindow;virtual;
end;
PPVDlg1 = ^TPVDlg1; {Font Sizes Dialog}
TPVDlg1 = object(TDialog)
FontSize: Integer;
procedure WMInitDialog(var Msg:TMessage);virtual wm_First+wm_InitDialog;
procedure IDD1LB1(var Msg:TMessage);virtual id_First+id_D1Lb1;
end;
PPVDlg2 = ^TPVDlg2; {String Dialog}
TPVDlg2 = object(TDialog)
DCType:Char;
procedure WMInitDialog(var Msg:TMessage);virtual wm_First+wm_InitDialog;
end;
type {Child win to display sample text}
PFontWindow = ^TFontWindow;
TFontWindow = object(TWindow)
FontHeight: LongInt;
constructor Init(AParent: PWindowsObject; ATitle: PChar);
procedure Paint(PaintDC: HDC; var PaintInfo: TPaintStruct); virtual;
end;
type {MainWindow of Application}
PPVWindow = ^TPVWindow;
TPVWindow = object(TWindow)
FWin:PFontWindow; {child window displaying typeface sample}
FBox:PListBox; {List box of available type faces}
Fonts:PFonts;
LogPixY:Integer;
Bn1,Bn2,Bn3,Bn4,Bn5:PODButton;
Dlg1 : PPVDlg1; {Select font size dialog}
St1,St2,St3,St4:PStatic;
TextString:Array[0..80] of Char; {to display in FWin}
FontSelection:Integer; {Index into Fonts }
FontSize:Integer; {Current font size }
constructor Init(AParent:PWindowsObject;ATitle:PChar);
destructor Done;virtual;
procedure SetupWindow;virtual;
procedure Paint(PaintDC:HDC;var PaintInfo:TPaintStruct);virtual;
procedure LoadFBox;
procedure WMDrawItem(var Msg:TMessage);virtual wm_First + wm_DrawItem;
procedure WMSize(var Msg:TMessage);virtual wm_First+wm_Size;
procedure WMSetFocus(var Msg:TMessage);virtual wm_First+wm_SetFocus;
procedure IDBut1(var Msg:TMessage);virtual id_First+id_But1; {Information}
procedure IDBut2(var Msg:TMessage);virtual id_First+id_But2; {Size}
procedure IDBut3(var Msg:TMessage);virtual id_First+id_But3; {String}
procedure IDBut4(var Msg:TMessage);virtual id_First+id_But4; {Text Metrics}
procedure IDBut5(var Msg:TMessage);virtual id_First+id_But5; {Exit}
procedure IDLB2(var Msg:TMessage);virtual id_First+id_lb2;
procedure EnumerateFonts;virtual;
procedure WMSysCommand(var Msg:TMessage);virtual wm_First+wm_SysCommand;
function GetIC:HDC;virtual;
end;
{*************************** G l o b a l s **************************}
var
MainWin:PPVWindow;
{*************************** M e t h o d s *************************}
procedure TPVApplication.InitMainWindow;
begin
MainWindow := New(PPVWindow,Init(nil,'Font Preview'));
MainWin := PPVWindow(MainWindow);
end;
{************************** TPVWindow ******************************}
constructor TPVWindow.Init(AParent:PWindowsObject;ATitle:PChar);
begin
TWindow.Init(AParent,ATitle);
Attr.X := 20; Attr.Y := 25; Attr.W := 595; Attr.H := 260;
Bn1 := New(PODButton,Init(@Self,id_But1,'About',0,0,50,50,False,'PV_Bn1'));
Bn2 := New(PODButton,Init(@Self,id_But2,'Font Size',50,0,50,50,False,'PV_Bn2'));
Bn3 := New(PODButton,Init(@Self,id_But3,'String',100,0,100,50,False,'PV_Bn3'));
Bn4 := New(PODButton,Init(@Self,id_But4,'TM',200,0,50,50,False,'PV_Bn4'));
Bn5 := New(PODButton,Init(@Self,id_But5,'Exit',250,0,50,50,False,'PV_Bn5'));
St1 := New(PStatic,Init(@Self,id_St1,'',315,5,240,18,75));
St2 := New(PStatic,Init(@Self,id_St2,'',315,26,240,18,75));
St3 := New(PStatic,Init(@Self,id_ST3,'',310,3,250,44,75));
St4 := New(PStatic,Init(@Self,id_St4,'',5,55,100,18,75));
St2^.Attr.Style := St2^.Attr.Style or ss_LeftNoWordWrap;
St3^.Attr.Style := St3^.Attr.Style or ss_BlackFrame;
St4^.Attr.Style := St4^.Attr.Style or ss_Left;
FontSelection := 0;
FontSize := 48;
StrCopy(TextString,'');
Fonts := New(PFonts,Init);
EnumerateFonts;
FWin := New(PFontWindow,Init(@Self,ATitle));
With FWin^.Attr do Style := Style or ws_Child or ws_HScroll or ws_VScroll or ws_Border ;
FBox := New(PListBox,Init(@Self,id_lb2,0,0,0,0));
With FBox^.Attr do Style := Style and not lbs_Sort;
end;
procedure TPVWindow.SetupWindow;
begin
TWindow.SetupWindow;
SetClassWord(HWindow,GCW_HIcon,LoadIcon(HInstance,'PV_Icon'));
AppendMenu(GetSystemMenu(hWindow,false),MF_Separator,0,nil);
AppendMenu(GetSystemMenu(hWindow,false),0,idm_RunCP,'Run Control Panel');
AppendMenu(GetSystemMenu(hWindow,false),0,idm_RunATM,'Run ATM');
AppendMenu(GetSystemMenu(hWindow,false),MF_Separator,0,nil);
AppendMenu(GetSystemMenu(hWindow,false),0,idm_About,'About...');
LoadFBox;
end;
procedure TPVWindow.Paint(PaintDC:HDC;var PaintInfo:TPaintStruct);
var
ThePen,OldPen:HPen;
TheBrush,OldBrush:HBrush;
begin
TheBrush := GetStockObject(LtGray_Brush);
ThePen := CreatePen(ps_Solid,1,$00000000);
OldPen := SelectObject(PaintDC,ThePen);
OldBrush := SelectObject(PaintDC,TheBrush);
Rectangle(PaintDC,0,0,1024,50);
SelectObject(PaintDC,OldBrush);
SelectObject(PaintDC,OldPen);
DeleteObject(ThePen);
end;
procedure TPVWindow.WMDrawItem(var Msg:TMessage);
var
PDIS : ^TDrawItemStruct;
begin
PDIS := Pointer(Msg.lParam);
case PDIS^.CtlType of
odt_Button:
case PDIS^.CtlID of
id_But1 :Bn1^.DrawItem(Msg);
id_But2 :Bn2^.DrawItem(Msg);
id_But3 :Bn3^.DrawItem(Msg);
id_But4 :Bn4^.DrawItem(Msg);
id_But5 :Bn5^.DrawItem(Msg);
end;
end;
end;
destructor TPVWindow.Done;
begin
Dispose(BN1,Done);Dispose(Bn2,Done);Dispose(Bn3,Done);
Dispose(Bn4,Done);Dispose(Bn5,Done);Dispose(St1,done);
Dispose(St2,Done);Dispose(St3,Done);Dispose(St4,Done);
TWindow.Done;
end;
procedure TPVWindow.WMSize(var Msg:TMessage);
begin
SetWindowPos(FBox^.HWindow,0,-1,75,(Msg.LParamLo div 3)+1,
((Msg.LParamHi-70) ),swp_NoZOrder);
SetWindowPos(FWin^.HWindow,0,(Msg.LParamLo div 3)-1,49,
(Msg.LParamLo * 2 div 3)+1,(Msg.LParamHi-48),swp_NoZOrder);
end;
procedure TPVWindow.WMSetFocus(var Msg:TMessage);
begin
SetFocus(FBox^.HWindow);
end;
procedure TPVWindow.IDBut1(var Msg:TMessage);
begin
Application^.ExecDialog(New(PDialog,Init(@Self,'PV_About')));
end;
procedure TPVWindow.IDBut2(var Msg:TMessage);
begin
Dlg1 := new(PPVDlg1,Init(@Self,'PV_Dlg1'));
Application^.ExecDialog(Dlg1);
if (Dlg1^.FontSize) <> 0 then InvalidateRect(Fwin^.HWindow,nil,True);
end;
procedure TPVWindow.IDBut3(var Msg:TMessage);
begin
If Application^.ExecDialog(New(PInputdialog,Init(@Self,'Font String',
'Enter text:',TextString,SizeOf(TextString)))) <> 1 then StrCopy(TextString,'');
InvalidateRect(FWin^.HWindow,nil,True);
end;
procedure TPVWindow.IDBut4(var Msg:TMessage);
var
Dlg : PPVDlg2;
begin
Dlg :=New(PPVDlg2,Init(@Self,'PV_Dlg2'));
Dlg^.DCType := 'S';
Application^.ExecDialog(Dlg);
Dlg :=New(PPVDlg2,Init(@Self,'PV_Dlg2'));
Dlg^.DCType := 'P';
Application^.ExecDialog(Dlg);
end;
procedure TPVWindow.IDBut5(var Msg:TMessage);
begin
CloseWindow;
end;
procedure TPVWindow.LoadFBox;
var
Indx : Integer;
Font : PFontItem;
Buf1 :Array[0..20] of Char;
Buf2 :Array[0..5] of Char;
begin
Str(Fonts^.Count,Buf2);
StrECopy(StrECopy(StrECopy(Buf1,'*'),Buf2),' Type Faces*');
St4^.SetText(Buf1);
for indx := 0 to (Fonts^.Count -1) do
FBox^.InsertString(PFontItem(Fonts^.At(Indx))^.LogFont.lfFaceName,-1);
end;
procedure TPVWindow.IDLB2(var Msg:TMessage);
var
Indx:Integer;
begin
case Msg.lParamHi of
lbn_DblClk, lbn_SelChange:
begin
Indx := FBox^.GetSelIndex;
FontSelection := Indx;
InvalidateRect(FWin^.HWindow,nil,True);
end;
end;
end;
procedure TPVWindow.EnumerateFonts;
var
IC :HDC;
begin
IC := GetIC;
Fonts^.Enumerate(IC);
DeleteDC(IC);
end;
procedure TPVWindow.WMSysCommand(var Msg:TMessage);
begin
case Msg.Wparam of
idm_About:Application^.ExecDialog(New(PDialog,Init(@Self,'PV_About')));
idm_RunCP:
begin
WinExec('Control',1);
Fonts^.ReInit;
EnumerateFonts;
end;
idm_RunATM:
WinExec('ATMCNTRL',1);
else
DefWndProc(Msg);
end;
end;
function TPVWindow.GetIC:HDC;
function StrTok(P:PChar;C:Char):PChar;
const
Next:Pchar = nil;
begin
if P = NIL then P := Next;
Next := StrScan(P,C);
If Next <> NIL then
begin
Next^ := #0;
Next := Next+1;
end;
StrTok := P;
end;
var
Buf1 :Array[0..80] of Char;
DeviceName:Array[0..79] of Char; {win.ini device= }
DriverName:Array[0..79] of Char;
OutPort:Array[0..79] of Char;
begin
GetProfileString('Windows','device',',,',Buf1,SizeOf(Buf1));
StrCopy(DeviceName,StrTok(Buf1,','));
StrCopy(DriverName,StrTok(nil,','));
Strcopy(OutPort,StrTok(nil,','));
GetIC := CreateIC(DriverName,DeviceName,OutPort,nil);
end;
{************************** TFontWindow ************************}
constructor TFontWindow.Init(AParent: PWindowsObject; ATitle: PChar);
begin
TWindow.Init(AParent, ATitle);
Attr.Style := Attr.Style or ws_VScroll or ws_HScroll or ws_Border;
FontHeight := 0;
Scroller := New(PScroller, Init(@Self, 12, 12,0,0));
end;
procedure TFontWindow.Paint(PaintDC: HDC; var PaintInfo: TPaintStruct);
var
VPosition: Integer;
FontItem :PFontItem;
AFont,OldFont:HFont;
Extent:LongRec;
Text:Array[0..80] of Char;
Buf:Array[0..80] of Char;
FH:Real;
szFH:Array[0..5] of Char;
LPY:Integer;
FontMetrics:TTextMetric;
begin {build text display}
LPY := GetDeviceCaps(PaintDC,LogPixelsY);
FontItem := MainWin^.Fonts^.At(MainWin^.FontSelection);
FontHeight := MainWin^.FontSize * LPY div 72;
FontItem^.LogFont.lfHeight := FontHeight;
FontItem^.LogFont.lfWidth := 0;
FontItem^.LogFont.lfWeight := 0;
FontItem^.LogFont.lfQuality := Proof_Quality;
VPosition := 5;
if StrComp(MainWin^.TextString,'') = 0 then
StrCopy(Text,FontItem^.LogFont.lfFaceName)
else
StrCopy(Text,MainWin^.TextString);
AFont := CreateFontIndirect(FontItem^.LogFont);
OldFont := SelectObject(PaintDC, AFont);
GetTextMetrics(PaintDC,FontMetrics);
LongInt(Extent) := GetTextExtent(PaintDC,Text,StrLen(Text));
Scroller^.SetRange(Extent.lo div 12, Extent.Hi div 12);
TextOut(PaintDC, 10,VPosition, Text,StrLen(Text));
StrCopy(Buf,'Face: ');
MainWin^.St1^.SetText(StrCat(Buf,FontItem^.LogFont.lfFaceName));
FH :=(FontMetrics.tmHeight)*72 / LPY;
Str(FH:5:1,szFH);
StrECopy(StrECopy(Buf,'Actual :'),szFH);
if FontItem^.FontType and Raster_FontType = 0 then
StrCat(Buf,' Type:Vector,') else StrCat(Buf,' Type:Raster,');
if FontItem^.FontType and Device_FontType = 0 then
StrCat(Buf,'GDI') else StrCat(Buf,'Device');
MainWin^.St2^.SetText(Buf);
SelectObject(PaintDC,OldFont);
DeleteObject(AFont);
end;
procedure TPVDlg1.IDD1LB1(var Msg:TMessage);
var
Buf:Array[0..5] of Char;
Ptr : PChar;
Idx,ErrCode:Integer;
begin
case Msg.lParamHi of
lbn_SelChange,lbn_DblClk:
begin
Ptr := Buf;
Idx := SendDlgItemMsg(id_D1Lb1,lb_GetCurSel,0,0);
SendDlgItemMsg(id_D1Lb1,lb_GetText,word(Idx),LongInt(Ptr));
val(Ptr,FontSize,ErrCode);
MainWin^.FontSize := FontSize;
end;
end;
end;
procedure TPVDlg1.WMInitDialog(var Msg:TMessage);
var
pTextItem:PChar;
Buf:Array[0..5] of Char;
Indx,Indx2:Integer;
DSN,ErrCode :Integer;
FontItem:PFontItem;
LPY : Integer;
Height:Integer;
begin
TDialog.WMInitDialog(Msg);
FontItem := MainWin^.Fonts^.At(MainWin^.FontSelection);
Indx := 12; Indx2 := 0;
pTextItem := Buf;
If (FontItem^.FontType and Raster_FontType) = 0 then {0 = vector font}
begin
Str(Indx:3,Buf);
while Indx < 200 do
begin
SendDlgItemMsg(id_D1Lb1,lb_AddString,word(0),LongInt(pTextItem));
Inc(Indx,12);
Str(Indx:3,Buf);
end;
end
else
for Indx2 := 0 to FontItem^.Sizes^.Count-1 do
begin
Height := PIntObj(FontItem^.Sizes^.At(Indx2))^.Int;
Str(Height * 72 div MainWin^.Fonts^.LogPixY:3,Buf);
SendDlgItemMsg(id_D1Lb1,lb_AddString,word(0),LongInt(pTextItem));
end;
end;
{*************************** TPVDlg2 ***************************}
procedure TPVDlg2.WMInitDialog(var Msg:TMessage);
const
FontFamily : Array[0..5,0..11] of Char = ('Don''t Care', ' Roman',
' Swiss',' Modern', ' Script', 'Decorative');
var
FontItem:PFontItem;
TextItem:PChar;
Buf:Array[0..3] of Char;
Buf60:Array[0..60] of Char;
FontMetrics:TTextMetric;
IC:HDC;
OldFont,NewFont:hFont;
LogFont:TLogFont;
DeviceName:Array[0..30] of Char;
ScreenDC:hDC;
begin
FontItem := MainWin^.Fonts^.At(MainWin^.FontSelection);
if DCType = 'P' then
begin
IC := MainWin^.GetIC;
StrCopy(DeviceName,'Printer');
FontItem^.LogFont.lfHeight := MainWin^.FontSize *
GetDeviceCaps(IC,LogPixelsY) div 72;
FontItem^.LogFont.lfQuality := Proof_Quality;
FontItem^.LogFont.lfWeight := fw_Normal;
NewFont := CreateFontIndirect(FontItem^.LogFont);
OldFont := SelectObject(IC,NewFont);
GetTextMetrics(IC,FontMetrics);
SelectObject(IC,OldFont);
DeleteObject(NewFont);
DeleteDC(IC);
end
else
begin
StrCopy(DeviceName,'Screen Display');
ScreenDC :=GetDC(MainWin^.HWindow);
FontItem^.LogFont.lfHeight := MainWin^.FontSize *
GetDeviceCaps(ScreenDC,LogPixelsY) div 72;
FontItem^.LogFont.lfQuality := Proof_Quality;
FontItem^.LogFont.lfWeight := fw_Normal;
NewFont := CreateFontIndirect(FontItem^.LogFont);
OldFont := SelectObject(ScreenDC,Newfont);
GetTextMetrics(ScreenDC,FontMetrics);
SelectObject(ScreenDC,OldFont);
DeleteObject(NewFont);
ReleaseDC(MainWin^.HWindow,ScreenDC);
end;
TDialog.WMInitDialog(Msg);
StrECopy(StrECopy(StrECopy(Buf60,FontItem^.LogFont.lfFaceName),' - '),DeviceName);
SetDlgItemText(HWindow,601,Buf60);
Str(FontMetrics.tmHeight:3,Buf); SetDlgItemText(HWindow,612,Buf);
Str(FontMetrics.tmAscent:3,Buf); SetDlgItemText(HWindow,613,Buf);
Str(FontMetrics.tmDescent:3,Buf); SetDlgItemText(HWindow,614,Buf);
Str(FontMetrics.tmInternalLeading:3,Buf); SetDlgItemText(HWindow,615,Buf);
Str(FontMetrics.tmExternalLeading:3,Buf); SetDlgItemText(HWindow,616,Buf);
Str(FontMetrics.tmAveCharWidth:3,Buf); SetDlgItemText(HWindow,617,Buf);
Str(FontMetrics.tmMaxCharWidth:3,Buf); SetDlgItemText(HWindow,618,Buf);
Str(FontMetrics.tmWeight:3,Buf); SetDlgItemText(HWindow,619,Buf);
Str(FontMetrics.tmItalic:3,Buf); SetDlgItemText(HWindow,620,Buf);
Str(FontMetrics.tmUnderlined:3,Buf); SetDlgItemText(HWindow,621,Buf);
Str(FontMetrics.tmStruckOut:3,Buf); SetDlgItemText(HWindow,632,Buf);
Str(FontMetrics.tmFirstChar:3,Buf); SetDlgItemText(HWindow,633,Buf);
Str(FontMetrics.tmLastChar:3,Buf); SetDlgItemText(HWindow,634,Buf);
Str(FontMetrics.tmDefaultChar:3,Buf); SetDlgItemText(HWindow,635,Buf);
if FontMetrics.tmPitchandFamily and 1 > 0 then SetDlgItemText(HWindow,636,'Variable')
else SetDlgItemText(HWindow,636,'Fixed');
SetDlgItemText(HWindow,637,FontFamily[FontMetrics.tmPitchAndFamily shr 4] );
if FontMetrics.tmCharSet = ANSI_CharSet then SetDlgItemText(HWindow,638,'Ansi')
else if FontMetrics.tmCharSet = OEM_CharSet then SetDlgItemText(HWindow,638,'OEM')
else if FontMetrics.tmCharSet = Symbol_CharSet then SetDlgItemText(HWindow,638,'Symbol')
else if FontMetrics.tmCharSet = ShiftJis_CharSet then SetDlgItemText(HWindow,638,'ShiftJis')
else SetDlgItemText(HWindow,638,' ');
Str(FontMetrics.tmOverHang:3,Buf); SetDlgItemText(HWindow,639,Buf);
Str(FontMetrics.tmDigitizedAspectX:3,Buf); SetDlgItemText(HWindow,640,Buf);
Str(FontMetrics.tmDigitizedAspectY:3,Buf); SetDlgItemText(HWindow,641,Buf);
end;
{*********************** TPVApplication **************************}
var
PVApp : TPVApplication;
begin
PVApp.Init('Font Preview');
PVApp.Run;
PVApp.Done;
end.