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DialogComboBoxes.Mod
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Syntax10.Scn.Fnt
Syntax10i.Scn.Fnt
StampElems
Alloc
30 Jan 95
Syntax10b.Scn.Fnt
MODULE DialogComboBoxes;
(** Markus Knasm
ller 30 Sep 94 -
(* based on PopupElems MF 27.1.92 /MH/CM/MAH/HM *)
IMPORT
Bitmaps, DialogCheckBoxes, DialogFrames, DialogListBoxes, Dialogs, DialogSliders, DialogStaticTexts, DialogTexts,
Display, Files, Fonts, GraphicUtils, In, Input, MenuViewers, Oberon, Printer, TextFrames, Texts, Viewers;
CONST
mhm = 5; mvm = 2; (*menu: horizontal margin, vertical margin*)
CR = 0DX; lbH = 100;
MR = 0; MM = 1; ML = 2; cancel = {ML, MM, MR};
W* = 60; H* = 22; minH = 20; downW = 9;
white = 0; grey1 = 12; grey2 = 13; grey3 = 14; black = 15;
TYPE
Item* = POINTER TO ItemDesc;
ItemDesc* = RECORD(Dialogs.ObjectDesc)
menu*: Texts.Text; (** text of the list box *)
readonly*: BOOLEAN; (** allows changes of the entry field without using the listbox *)
selline*: INTEGER; (** last selected cmd *)
lbHeight*: INTEGER; (** height of the listbox *)
n: INTEGER; (** number of lines in the text *)
f: TextFrames.Frame;
END;
ChangeMsg = RECORD (Display.FrameMsg);
x, y: LONGINT;
END;
VAR w0: Texts.Writer;
PROCEDURE Max (x, y: INTEGER): INTEGER;
BEGIN
IF x > y THEN RETURN x ELSE RETURN y END
END Max;
PROCEDURE (b: Item) Copy* (VAR dup: Dialogs.Object);
(** allocates dup and makes a deep copy of o. Before calling this methode dup should be equal NIL *)
VAR x: Item;
BEGIN
IF dup = NIL THEN NEW (x); dup := x ELSE x := dup(Item) END;
b.Copy^ (dup); x.menu := TextFrames.Text (""); x.selline := b.selline; x.readonly := b.readonly;
x.lbHeight := b.lbHeight; x.f := TextFrames.NewText (TextFrames.Text (""), 0);
END Copy;
PROCEDURE (b: Item) Load* (VAR r: Files.Rider);
(** reads the object from rider r *)
BEGIN b.Load^ (r); Files.ReadBool (r, b.readonly); Files.ReadInt (r, b.lbHeight);
END Load;
PROCEDURE (b: Item) Store* (VAR r: Files.Rider);
(** writes the object to rider r *)
BEGIN b.Store^ (r); Files.WriteBool (r, b.readonly); Files.WriteInt (r, b.lbHeight);
END Store;
(* graphics *)
PROCEDURE (b: Item) Print* (x, y: INTEGER);
(** prints the object at printer coordinates (x, y) *)
VAR h, w, ox, oy, i, p: INTEGER;
BEGIN
b.GetPDim (ox, oy, w, h);
IF w > h THEN p := h; DEC (w, h) ELSE p := 0 END;
GraphicUtils.PrintBox (x, y, w, h);
IF p > SHORT (downW DIV Dialogs.dUnit * Dialogs.pUnit) THEN
i := (p - SHORT (downW DIV Dialogs.dUnit * Dialogs.pUnit)) DIV 2;
GraphicUtils.PrintPatternBox (DialogSliders.downArrow, x + w + 1, y, p, p, i, i);
END
END Print;
PROCEDURE DrawFrame (f1, f: Display.Frame; m: BOOLEAN);
VAR mode: INTEGER;
BEGIN
IF m THEN mode := Display.invert ELSE mode := Display.replace END;
Display.ReplConstC (f1, black, f.X - 1, f.Y, 1, f.H + 1, mode); Display.ReplConstC (f1, white, f.X + f.W, f.Y, 1, f.H + 1, mode);
Display.ReplConstC (f1, white, f.X, f.Y, f.W - 1, 1, mode); Display.ReplConstC (f1, black, f.X, f.Y + f.H, f.W - 1, 1, mode)
END DrawFrame;
PROCEDURE Adjust (f: TextFrames.Frame; id, dY, y, h: INTEGER);
VAR m: MenuViewers.ModifyMsg;
BEGIN
m.id := id; m.dY := dY; m.Y := y; m.H := 0; f.handle (f, m);
m.id := id; m.dY := dY; m.Y := y; m.H := h; f.handle (f, m);
END Adjust;
PROCEDURE (b: Item) Draw* (x, y: INTEGER; f: Display.Frame);
(** displays the object at (x, y) in frame f *)
VAR ox, oy, w, h, w1, h1, p, i: INTEGER; pat: Display.Pattern;
BEGIN
INC (x); b.GetDim (ox, oy, w, h); DEC (w, 2); DEC (h);
(* checks wether textframe is visible *)
IF (y + h <= f.Y) OR (y >= f.Y + f.H) OR (x + w <= f.X) OR (x >= f.X + f.W) THEN RETURN END;
(* corrects x and y such that the lower left coordinats of the textframes are visible *)
IF (x < f.X) & (x + w > f.X) THEN w := w - (f.X - x); x := f.X END;
IF (y < f.Y) & (y + h > f.Y) THEN h := h- (f.Y - y); y := f.Y END;
(* corrects wide and height such that the full textframe can be displayed *)
w1 := f.W - (x - f.X); h1 := f.H - (y - f.Y);
IF w1 < b.f.left THEN RETURN END;
IF w > w1 THEN w := w1 END; IF h > h1 THEN h := h1 END;
IF w < 0 THEN w := 0 END; IF h < 0 THEN h := 0 END;
IF w > h THEN p := h; DEC (w, h) ELSE p := 0 END;
b.f.X := x; b.f.Y := y; b.f.W := w; b.f.H := h;
Oberon.RemoveMarks (f.X, f.Y, f.W, f.H); DrawFrame (f, b.f, b.selected);
b.f.barW := 0; b.f.left := 3; b.f.right := 3; b.f.bot := 1; b.f.top := 2;
Adjust (b.f, MenuViewers.extend, 0, b.f.Y + 1, b.f.H - 1);
IF p > downW THEN
i := (p - downW) DIV 2;
GraphicUtils.DrawPatternBox (f, FALSE, DialogSliders.downArrow, x + w + 1, y, p, p, i, i, Display.paint);
END
END Draw;
PROCEDURE NilNotifier (T: Texts.Text; op: INTEGER; beg, end: LONGINT);
END NilNotifier;
PROCEDURE (b: Item) Popup (x, y, w, h: INTEGER; f: Display.Frame);
VAR
menuX, menuY, menuW, menuH, p, i, lsp, dsc, sc, pos1, pos2: INTEGER; t1: Texts.Text;
r: Texts.Reader; keys: SET; ch: CHAR; bit: Bitmaps.Bitmap;
BEGIN
IF w > h THEN p := h ELSE p := 0 END;
IF p > downW THEN
i := (p - downW) DIV 2;
GraphicUtils.DrawPatternBox (f, TRUE, DialogSliders.downArrow, x + w - p + 1, y, p, p, i, i, Display.paint);
END;
menuW := w + 2 * mhm; menuH := Max (b.lbHeight, 40);
IF y - menuH >= 0 THEN menuY := y - menuH
ELSIF y + h + menuH <= Display.Height THEN menuY := y + h
ELSE menuY := 0
END;
IF x + menuW <= Display.Width THEN
menuX := x
ELSE
menuX := Max (x + w - menuW, 0)
END;
Oberon.RemoveMarks (menuX, menuY, menuW, menuH);
Oberon.FadeCursor (Oberon.Mouse);
bit := Bitmaps.New (menuW, menuH);
Bitmaps.CopyBlock (Bitmaps.Disp, bit, menuX, menuY, menuW, menuH, 0, 0, 0); sc := b.selline;
GraphicUtils.DrawMenu (NIL, b.menu, sc, b.selline, menuX, menuY, menuW, menuH, Display.replace, b.n, lsp, dsc);
GraphicUtils.TrackMenu (NIL, b.menu, menuX, menuY, menuW, menuH, b.n, lsp, dsc, sc, b.selline);
Oberon.FadeCursor (Oberon.Mouse);
Bitmaps.CopyBlock (bit, Bitmaps.Disp, 0, 0, menuW, menuH, menuX, menuY, 0);
IF p > downW THEN
i := (p - downW) DIV 2;
GraphicUtils.DrawPatternBox (f, FALSE, DialogSliders.downArrow, x + w - p + 1, y, p, p, i, i, Display.paint);
END;
IF (b.selline > -1) THEN
DialogTexts.GetParText (b.par, b.panel, t1);
GraphicUtils.Set( r, b.menu, b.selline); pos1 := SHORT (Texts.Pos (r));
WHILE (~ r.eot) & (ch # CR) DO Texts.Read (r, ch) END;
pos2 := SHORT (Texts.Pos (r));
Texts.Save (b.menu, pos1, pos2, w0.buf);
b.f.text.notify := NilNotifier;
Texts.Delete (b.f.text, 0, b.f.text.len);
b.f.text.notify := TextFrames.NotifyDisplay; Texts.Append (b.f.text, w0.buf);
END;
END Popup;
PROCEDURE (b: Item) SetTitle* (t: Texts.Text);
(** sets the title of the item to t *)
BEGIN b.f.text := t; b.Restore;
END SetTitle;
PROCEDURE (b: Item) GetTitle* (): Texts.Text;
(** returns the title of the item *)
BEGIN RETURN b.f.text
END GetTitle;
PROCEDURE (b: Item) Handle* (f: Display.Frame; VAR msg: Display.FrameMsg);
(** handles messages which were sent to frame f *)
VAR x, y, w, h, p, xh, yh, h1: INTEGER; v: Viewers.Viewer; msg1: Oberon.CopyMsg;
f1: Display.Frame; cond: BOOLEAN; msg2: ChangeMsg; t1: Texts.Text;
BEGIN
b.Handle^ (f, msg); b.GetDim (x, y, w, h);
IF w > h THEN p := h ELSE p := 0 END;
(* checks textframe is visible *)
WITH f: DialogFrames.Frame DO
yh := f.Y + f.H + y; xh := f.X + x;
WITH msg: Oberon.InputMsg DO
IF (msg.id = Oberon.track) & (p > 0) &
(msg.X >= xh + w - p) & (msg.X <= xh + w) & (msg.Y >= yh) & (msg.Y <= yh + h) & (msg.keys # {}) THEN
b.Popup (xh, yh, w, h, f);
RETURN
END
ELSE
END;
IF yh < f.Y THEN h1 := h - f.Y + yh ELSE h1 := h END;
IF (yh + h <= f.Y) OR (yh >= f.Y + f.H) OR (xh + w <= f.X) OR (xh >= f.X + f.W) OR (h1 < minH) THEN RETURN END;
IF (b.readonly) & (msg IS Oberon.InputMsg) THEN RETURN END;
IF (f.X <= b.f.X) & (f.X + f.W >= b.f.X) & (f.Y <= b.f.Y) & (f.Y + f.H >= b.f.Y) THEN
IF msg IS TextFrames.UpdateMsg THEN
IF msg(TextFrames.UpdateMsg).text = b.f.text THEN
b.f.handle (b.f, msg); msg2.x := f.X; msg2.y := f.Y; Viewers.Broadcast (msg2);
IF (f.X > b.f.X) OR (f.X + f.W < b.f.X) OR (f.Y > b.f.Y) OR (f.Y + f.H < b.f.Y) THEN
b.Draw (f.X + x, f.Y + f.H + y, f);
END;
IF b.cmd[0] # 0X THEN
DialogTexts.GetParText (b.par, b.panel, t1);
b.CallCmd (f, Viewers.This (xh, yh), t1)
END
END
ELSIF msg IS MenuViewers.ModifyMsg THEN
IF msg(MenuViewers.ModifyMsg).id = MenuViewers.reduce THEN b.Restore END
ELSE
b.f.handle (b.f, msg);
END;
ELSE
cond := FALSE;
WITH msg: Oberon.InputMsg DO
IF (msg.id = Oberon.track) &
(msg.X >= xh) & (msg.X <= xh + w) & (msg.Y >= yh) & (msg.Y <= yh + h) & (msg. keys # {}) THEN cond := TRUE;
END;
IF msg.id = Oberon.defocus THEN cond := TRUE END
| msg: ChangeMsg DO
b.Draw (f.X + x, f.Y + f.H + y, f);
ELSE
END;
IF cond THEN
TextFrames.RemoveCaret (b.f); b.Draw (f.X + x, f.Y + f.H + y, f); b.f.handle (b.f, msg);
END;
END
ELSE
END;
END Handle;
PROCEDURE (b: Item) Init*;
(** initialies the object, should be called after allocating the object with NEW *)
BEGIN
b.Init^; b.menu := TextFrames.Text (""); b.f := TextFrames.NewText (TextFrames.Text (""), 0);
b.lbHeight := lbH;
END Init;
PROCEDURE WriteToObjectInt (o: DialogTexts.Item; n: INTEGER);
VAR t: Texts.Text;
BEGIN
t := o.GetText (); Texts.WriteInt (w0, n, 0); Texts.Append (t, w0.buf);
END WriteToObjectInt;
PROCEDURE (b: Item) Edit*;
(** opens a dialog for editing the properties of the object *)
VAR on: Dialogs.Object; os, t: DialogTexts.Item; s: DialogStaticTexts.Item; c: DialogCheckBoxes.Item; t1: Texts.Text; fnt: Fonts.Font;
BEGIN
b.Edit^;
NEW (s); s.Init; s.SetDim (2, - 176, 35, 20, FALSE);
s.SetString ("lbHeight"); fnt := Fonts.This ("Syntax10.Scn.Fnt"); s.SetFont (fnt);
Dialogs.editPanel.Insert (s, FALSE);
(* ---- *) ASSERT (Dialogs.res = Dialogs.ok);
NEW (t); t.Init; t.SetDim (38, - 176, 40, 19, FALSE); t.SetName ("LBh");
Dialogs.editPanel.Insert (t, FALSE);
(* ---- *) ASSERT (Dialogs.res = Dialogs.ok);
WriteToObjectInt (t, b.lbHeight);
NEW (c); c.Init; c.SetDim (195, - 30, 20, 19, FALSE); c.SetName ("RO");
Dialogs.editPanel.Insert (c, FALSE);
(* ---- *) ASSERT (Dialogs.res = Dialogs.ok);
c.ChangeValue (b.readonly);
NEW (s); s.Init; s.SetDim (215, - 30, 60, 22, FALSE);
s.SetString ("readonly"); fnt := Fonts.This ("Syntax10.Scn.Fnt"); s.SetFont (fnt);
Dialogs.editPanel.Insert (s, FALSE);
(* ---- *) ASSERT (Dialogs.res = Dialogs.ok);
END Edit;
PROCEDURE (b: Item) Update* (p: Dialogs.Panel);
(** sets the properties of the object to the values defined in the dialog p opened with Edit *)
VAR o: Dialogs.Object; t1: Texts.Text; s: Texts.Scanner; ch: CHAR; str: ARRAY 64 OF CHAR; i: INTEGER; cond: BOOLEAN;
BEGIN
b.Update^ (p);
o := p.NamedObject ("LBh"); t1 := o(DialogTexts.Item).GetText ();
Texts.OpenScanner (s, t1, 0); Texts.Scan (s);
i := b.lbHeight;
IF (s.class = Texts.Int) & (s.i # i) THEN b.lbHeight := SHORT (s.i); b.panel.MarkMenu END;
o := p.NamedObject ("RO"); cond := o(DialogCheckBoxes.Item).on;
IF cond # b.readonly THEN b.readonly := cond; b.panel.MarkMenu END
END Update;
PROCEDURE ParText (n: ARRAY OF CHAR; p: Dialogs.Panel; VAR t: Texts.Text);
(* returns the generated parameter t, defined by the text items of panel p, which names are contained in n *)
VAR t0, t1: Texts.Text; s: Texts.Scanner; o: Dialogs.Object;
BEGIN
t := TextFrames.Text (""); t0 := TextFrames.Text ("");
Texts.WriteString (w0, n); Texts.Append (t0, w0.buf);
Texts.OpenScanner (s, t0, 0); Texts.Scan (s);
WHILE (s.class # Texts.Char) OR (s.c # 0X) DO
IF s.class = Texts.Name THEN
o := p.NamedObject (s.s);
IF (o # NIL) & (o IS DialogTexts.Item) THEN
t1 := o(DialogTexts.Item).GetText ();
Texts.Save (t1, 0, t1.len, w0.buf); Texts.WriteString (w0, " ");
Texts.Append (t, w0.buf)
ELSIF (o # NIL) & (o IS Item) THEN
t1 := o(Item).GetTitle ();
Texts.Save (t1, 0, t1.len, w0.buf); Texts.WriteString (w0, " ");
Texts.Append (t, w0.buf)
END
ELSIF s.class = Texts.String THEN
Texts.WriteString (w0, s.s); Texts.Append (t, w0.buf)
END;
Texts.Scan (s)
END
END ParText;
PROCEDURE Insert*;
(** Insert ([name] [x y w h] | ^ ) inserts a combobox - item in the panel containing the caret position *)
VAR x, y, x1, y1, w, h: INTEGER; b: Item; p: Dialogs.Panel; name: ARRAY 64 OF CHAR;
BEGIN
NEW (b);
DialogFrames.GetCaretPosition (p, x, y);
IF (p # NIL) THEN
b.Init; In.Open; In.Name (name);
IF ~In.Done THEN COPY ("", name); In.Open END;
b.SetName (name);
In.Int (x1); In.Int (y1); In.Int (w); In.Int (h);
IF ~In.Done THEN x1 := x; y1 := y; w := W; h := H
ELSE
IF w < 0 THEN w := W END;
IF h < 0 THEN h := H END
END;
b.SetDim (x1, y1, w, h, FALSE); p.Insert (b, FALSE)
ELSE
Dialogs.res := Dialogs.noPanelSelected
END;
IF Dialogs.res # 0 THEN Dialogs.Error ("DialogComboBoxes") END;
END Insert;
BEGIN Texts.OpenWriter (w0); DialogTexts.GetParText := ParText
END DialogComboBoxes.