(*
Copyright 2021 Anton Krotov
This file is part of CEdit.
CEdit is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
CEdit 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. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with CEdit. If not, see <http://www.gnu.org/licenses/>.
*)
MODULE Menu;
IMPORT
SYSTEM, G := Graph, List, K := KolibriOS;
CONST
fontHeight = 20;
fontWidth = 8;
RIGHT = 16;
LEFT = 16;
TOP = 1;
backColor = 0F0F0F0H;
foreColor = 0;
selBackColor = 091C9F7H;
selForeColor = 0;
disBackColor = backColor;
disForeColor = 808080H;
disSelBackColor = 0E4E4E4H;
disSelForeColor = disForeColor;
TYPE
tItem* = POINTER TO RECORD (List.tItem)
id*, check: INTEGER;
text: ARRAY 32 OF WCHAR;
enabled, delim: BOOLEAN
END;
tMenu* = POINTER TO RECORD
tid*: INTEGER;
winX, winY, width*, height*: INTEGER;
selItem, cliItem: INTEGER;
font: G.tFont;
canvas: G.tCanvas;
items: List.tList;
click: PROCEDURE (menu: tMenu; id: INTEGER);
key: PROCEDURE (menu: tMenu; key: INTEGER): BOOLEAN
END;
tClick = PROCEDURE (menu: tMenu; id: INTEGER);
tKey = PROCEDURE (menu: tMenu; key: INTEGER): BOOLEAN;
VAR
lastTID*: INTEGER;
stack: ARRAY 250000 OF INTEGER;
PROCEDURE exit (m: tMenu);
BEGIN
m.tid := 0;
K.Exit
END exit;
PROCEDURE repaint (m: tMenu);
VAR
y, i: INTEGER;
item: tItem;
BkColor, TextColor: INTEGER;
canvas: G.tCanvas;
BEGIN
canvas := m.canvas;
G.SetColor(canvas, backColor);
G.clear(canvas);
G.SetColor(canvas, ORD((-BITS(backColor))*{0..23}) );
G.Rect(canvas, 0, 0, m.width, m.height);
y := TOP;
i := 0;
item := m.items.first(tItem);
WHILE item # NIL DO
IF item.enabled THEN
IF i # m.selItem THEN
BkColor := backColor;
TextColor := foreColor
ELSE
BkColor := selBackColor;
TextColor := selForeColor
END
ELSE
IF i # m.selItem THEN
BkColor := disBackColor;
TextColor := disForeColor
ELSE
BkColor := disSelBackColor;
TextColor := disSelForeColor
END
END;
G.SetColor(canvas, BkColor);
G.FillRect(canvas, 1, y, m.width - 1, y + fontHeight - 4);
G.SetTextColor(canvas, TextColor);
G.SetBkColor(canvas, BkColor);
G.TextOut2(canvas, LEFT, y + (fontHeight - 16) DIV 2 - 2, item.text, LENGTH(item.text));
IF item.check = 1 THEN
G.SetColor(canvas, TextColor);
G.DLine(canvas, 4, 7, y + (fontHeight - 16) DIV 2 + 5, -1);
G.DLine(canvas, 4, 7, y + (fontHeight - 16) DIV 2 + 6, -1);
G.DLine(canvas, 7, 12, y + (fontHeight - 16) DIV 2 + 8, 1);
G.DLine(canvas, 7, 12, y + (fontHeight - 16) DIV 2 + 9, 1);
ELSIF item.check = 2 THEN
G.SetColor(canvas, TextColor);
G.FillRect(canvas, 6, y + fontHeight DIV 2 - 4, 10, y + fontHeight DIV 2)
END;
INC(y, fontHeight);
IF item.delim THEN
G.SetColor(canvas, ORD((-BITS(backColor))*{0..23}));
G.HLine(canvas, y - 2, 1, m.width - 1)
END;
INC(i);
item := item.next(tItem)
END;
G.DrawCanvas(canvas, 0, 0)
END repaint;
PROCEDURE draw_window (m: tMenu);
BEGIN
K.BeginDraw;
K.CreateWindow(m.winX, m.winY, m.width, m.height, 0, 61H, 0, 1, "");
repaint(m);
K.EndDraw
END draw_window;
PROCEDURE mouse (m: tMenu; VAR x, y: INTEGER);
VAR
mouseX, mouseY: INTEGER;
BEGIN
K.MousePos(mouseX, mouseY);
x := mouseX - m.winX;
y := mouseY - m.winY;
END mouse;
PROCEDURE click (m: tMenu; i: INTEGER);
VAR
item: List.tItem;
BEGIN
item := List.getItem(m.items, i);
IF (item # NIL) & item(tItem).enabled THEN
m.click(m, item(tItem).id);
exit(m)
END
END click;
PROCEDURE [stdcall] window (m: tMenu);
VAR
x, y: INTEGER;
key: INTEGER;
msState: SET;
BEGIN
m.selItem := -1;
m.cliItem := -1;
K.SetEventsMask({0, 1, 5});
WHILE TRUE DO
CASE K.WaitForEvent() OF
|1:
draw_window(m)
|2:
key := K.GetKey();
IF key DIV 65536 = 72 THEN
DEC(m.selItem);
IF m.selItem < 0 THEN
m.selItem := 0
END
ELSIF key DIV 65536 = 80 THEN
INC(m.selItem);
IF m.selItem >= m.items.count THEN
m.selItem := m.items.count - 1
END
ELSIF key DIV 65536 = 28 THEN
IF m.selItem >= 0 THEN
click(m, m.selItem)
END;
m.cliItem := -1
ELSE
IF m.key(m, key) THEN
exit(m)
END
END;
repaint(m)
|6:
msState := K.MouseState();
mouse(m, x, y);
IF (0 <= x) & (x < m.width) & (0 <= y) & (y < m.height) THEN
m.selItem := (y - TOP) DIV fontHeight;
IF 8 IN msState THEN
m.cliItem := (y - TOP) DIV fontHeight
END;
IF 16 IN msState THEN
IF m.cliItem = m.selItem THEN
click(m, m.cliItem)
END;
m.cliItem := -1
END
ELSE
m.cliItem := -1;
IF {8, 9, 10} * msState # {} THEN
exit(m)
END
END;
repaint(m)
END
END
END window;
PROCEDURE AddMenuItem* (items: List.tList; id: INTEGER; s: ARRAY OF WCHAR);
VAR
item: tItem;
BEGIN
NEW(item);
item.id := id;
item.text := s;
item.enabled := TRUE;
item.delim := FALSE;
List.append(items, item);
END AddMenuItem;
PROCEDURE delimiter* (items: List.tList);
BEGIN
items.last(tItem).delim := TRUE
END delimiter;
PROCEDURE getItem (m: tMenu; id: INTEGER): tItem;
VAR
item: tItem;
BEGIN
item := m.items.first(tItem);
WHILE (item # NIL) & (item.id # id) DO
item := item.next(tItem)
END
RETURN item
END getItem;
PROCEDURE setEnabled* (m: tMenu; id: INTEGER; value: BOOLEAN);
VAR
item: tItem;
BEGIN
item := getItem(m, id);
IF item # NIL THEN
item.enabled := value
END
END setEnabled;
PROCEDURE setCheck* (m: tMenu; id: INTEGER; value: INTEGER);
VAR
item: tItem;
BEGIN
item := getItem(m, id);
IF item # NIL THEN
item.check := value
END
END setCheck;
PROCEDURE isEnabled* (m: tMenu; id: INTEGER): BOOLEAN;
VAR
item: tItem;
BEGIN
item := getItem(m, id)
RETURN (item # NIL) & item.enabled
END isEnabled;
PROCEDURE opened* (m: tMenu): BOOLEAN;
RETURN m.tid # 0
END opened;
PROCEDURE open* (m: tMenu; x, y: INTEGER);
BEGIN
IF m.tid = 0 THEN
m.winX := x;
m.winY := y;
SYSTEM.PUT(SYSTEM.ADR(stack[LEN(stack) - 1]), m);
lastTID := K.CreateThread(SYSTEM.ADR(window), stack);
m.tid := lastTID
END
END open;
PROCEDURE close* (m: tMenu);
BEGIN
IF m.tid # 0 THEN
K.ExitID(m.tid);
m.tid := 0
END
END close;
PROCEDURE create* (items: List.tList; click: tClick; key: tKey): tMenu;
VAR
m: tMenu;
maxLength: INTEGER;
item: tItem;
BEGIN
NEW(m);
m.tid := 0;
m.items := items;
m.click := click;
m.key := key;
maxLength := 0;
item := items.first(tItem);
WHILE item # NIL DO
maxLength := MAX(maxLength, LENGTH(item.text));
item := item.next(tItem)
END;
m.width := maxLength*fontWidth + LEFT + RIGHT;
m.height := items.count*fontHeight - 2;
m.font := G.CreateFont(1, "", {});
m.canvas := G.CreateCanvas(m.width + 1, m.height + 1);
G.SetFont(m.canvas, m.font);
RETURN m
END create;
BEGIN
lastTID := 0
END Menu.