Subversion Repositories Kolibri OS

(*

    Copyright 2021, 2022 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 .

*)

MODULE Menu;

IMPORT

    SYSTEM, G := Graph, List, K := KolibriOS;

CONST

    fontHeight = 22;

    fontWidth = 8;

    MainMenuHeight* = K.fontHeight + 7;

	MainMenuX* = 3;

    RIGHT = 16;

    LEFT = 16;

    TOP = 1;

    maxLEVEL = 1;

    backColor = 0F0F0F0H;

    foreColor = 0;

    selBackColor = 091C9F7H;

    selForeColor = 0;

    disBackColor = backColor;

    disForeColor = 808080H;

    disSelBackColor = 0E4E4E4H;

    disSelForeColor = disForeColor;

	SHIFT* = 256;

	CTRL*  = 512;

TYPE

	tMainItem* = POINTER TO descMainItem;

    tMain* = POINTER TO RECORD (List.tList)

    	id: INTEGER

    END;

    tMenu* = POINTER TO RECORD

        tid*: INTEGER;

        active*, keyboard: BOOLEAN;

        parent*, child: tMenu;

        mainID: INTEGER;

        winX, winY, width*, height*: INTEGER;

        selItem, cliItem: INTEGER;

        font: G.tFont;

        canvas: G.tCanvas;

        items: List.tList

    END;

    tItem* = POINTER TO RECORD (List.tItem)

        id*, check: INTEGER;

        text: ARRAY 32 OF WCHAR;

        enabled, delim: BOOLEAN;

        child: tMenu

    END;

    descMainItem = RECORD (List.tItem)

        id*, x: INTEGER;

        text: ARRAY 32 OF WCHAR;

        menu*: tMenu;

        main: tMain

    END;

    tShortcut = POINTER TO RECORD (List.tItem)

    	key, MenuItem: INTEGER

    END;

    tProc = PROCEDURE;

VAR

	MenuItem*: INTEGER;

    stack: ARRAY maxLEVEL + 1, 2500 OF INTEGER;

    TIDs: ARRAY maxLEVEL + 1 OF INTEGER;

    resetTimer: tProc;

    _open: PROCEDURE (m: tMenu; x, y: INTEGER);

    shortcuts: List.tList;

(*

    backColor, foreColor, selBackColor, selForeColor,

    disBackColor, disForeColor, disSelBackColor, disSelForeColor: INTEGER;

*)

PROCEDURE AddMainItem* (main: tMain; text: ARRAY OF WCHAR; menu: tMenu);

VAR

	item, prev: tMainItem;

BEGIN

	NEW(item);

	item.id := main.id + main.count;

	COPY(text, item.text);

	item.menu := menu;

	item.main := main;

	menu.mainID := item.id;

	List.append(main, item);

	prev := item.prev(tMainItem);

	IF prev # NIL THEN

		item.x := prev.x + LENGTH(prev.text)*fontWidth + 9

	ELSE

		item.x := MainMenuX

	END

END AddMainItem;

PROCEDURE CreateMain* (id: INTEGER): tMain;

VAR

	res: tMain;

	list: List.tList;

BEGIN

	NEW(res);

	res.id := id;

	list := List.create(res)

	RETURN res

END CreateMain;

PROCEDURE drawMainItem (item: tMainItem);

VAR

    menuColor, textColor, n: INTEGER;

BEGIN

    IF item.menu.tid # 0 THEN

        menuColor := K.colors.work_text;

        textColor := K.colors.work

    ELSE

        menuColor := K.colors.work;

        textColor := K.colors.work_text

    END;

    n := LENGTH(item.text);

    K.DrawRect(item.x, 0, n*fontWidth + 2, MainMenuHeight, menuColor);

    K.CreateButton(item.id + ORD({30}), item.x, 0, n*fontWidth + 2, MainMenuHeight, K.colors.button, "");

    K.DrawText(item.x + 1, (MainMenuHeight - K.fontHeight) DIV 2 + 1, textColor, item.text)

END drawMainItem;

PROCEDURE DrawMain* (main: tMain);

VAR

	item: List.tItem;

BEGIN

	item := main.first;

	WHILE item # NIL DO

		drawMainItem(item(tMainItem));

		item := item.next

	END

END DrawMain;

PROCEDURE getMainID (m: tMenu): INTEGER;

BEGIN

	WHILE m.parent # NIL DO

		m := m.parent

	END

	RETURN m.mainID

END getMainID;

PROCEDURE ClickMain* (main: tMain; btn: INTEGER): tMenu;

VAR

	item: List.tItem;

	res: tMenu;

BEGIN

	item := List.getItem(main, btn - main.id);

	IF item # NIL THEN

		res := item(tMainItem).menu

	ELSE

		res := NIL

	END

	RETURN res

END ClickMain;

PROCEDURE isSender* (tid: INTEGER): BOOLEAN;

VAR

	i: INTEGER;

BEGIN

	i := 0;

	WHILE (i <= maxLEVEL) & (TIDs[i] # tid) DO

		INC(i)

	END

	RETURN i <= maxLEVEL

END isSender;

PROCEDURE exit (m: tMenu);

BEGIN

    m.active := FALSE;

   	resetTimer;

    m.tid := 0;

    K.Exit

END exit;

PROCEDURE escape (m: tMenu);

BEGIN

    m.active := FALSE;

    IF m.parent = NIL THEN

    	resetTimer

    END;

    m.tid := 0;

    K.Exit

END escape;

PROCEDURE repaint (m: tMenu);

VAR

    y, i, X, Y, Y1: INTEGER;

    item: tItem;

    BkColor, TextColor: INTEGER;

    canvas: G.tCanvas;

BEGIN

(*

    backColor := K.winColor;

    foreColor := K.textColor;

    selBackColor := K.btnColor;

    selForeColor := K.btnTextColor;

    disBackColor := backColor;

    disForeColor := K.darkColor;

    disSelBackColor := K.lightColor;

    disSelForeColor := disForeColor;

*)

    canvas := m.canvas;

    G.SetColor(canvas, backColor);

    G.clear(canvas);

    G.SetColor(canvas, foreColor);

    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;

        Y := y + (fontHeight - 16) DIV 2;

        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 - 2, item.text, LENGTH(item.text));

        G.SetColor(canvas, TextColor);

        IF item.check = 1 THEN

            G.DLine(canvas, 4,  7, Y + 5, -1);

            G.DLine(canvas, 4,  7, Y + 6, -1);

            G.DLine(canvas, 7, 12, Y + 8,  1);

            G.DLine(canvas, 7, 12, Y + 9,  1)

        ELSIF item.check = 2 THEN

            Y1 := y + fontHeight DIV 2 - 2;

            G.FillRect(canvas, 7, Y1 - 2,  9, Y1 + 2);

            G.FillRect(canvas, 6, Y1 - 1, 10, Y1 + 1)

        END;

        IF item.child # NIL THEN

            X := m.width - 9;

        	G.Triangle(canvas, X, Y + 2, X, Y + 10, G.triRight)

        END;

        INC(y, fontHeight);

        IF item.delim THEN

            G.SetColor(canvas, foreColor);

            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 close* (m: tMenu);

VAR

	temp: INTEGER;

BEGIN

    IF (m # NIL) & (m.tid # 0) THEN

    	IF m.child # NIL THEN

    		close(m.child);

    		m.child := NIL

    	END;

    	temp := m.tid;

    	m.tid := 0;

        K.ExitID(temp);

        m.active := FALSE

    END

END close;

PROCEDURE SetItem* (id: INTEGER);

BEGIN

	MenuItem := id

END SetItem;

PROCEDURE click (m: tMenu; i: INTEGER);

VAR

    item: List.tItem;

    p: tMenu;

    id: INTEGER;

BEGIN

	id := -1;

	IF i < 0 THEN

		id := i

	ELSE

	    item := List.getItem(m.items, i);

	    IF (item # NIL) & item(tItem).enabled & (item(tItem).child = NIL) THEN

	    	id := item(tItem).id

	    END

    END;

    IF id # -1 THEN

    	SetItem(id);

	    p := m.parent;

	   	WHILE p # NIL DO

	   		p.child := NIL;

	   		close(p);

	   		p := p.parent

	   	END;

	   	exit(m)

   	END

END click;

PROCEDURE opened* (m: tMenu): BOOLEAN;

    RETURN m.tid # 0

END opened;

PROCEDURE isActive (m: tMenu): BOOLEAN;

	RETURN (m # NIL) & ((m.tid # 0) & m.active OR isActive(m.child))

END isActive;

PROCEDURE closeChild (m: tMenu);

BEGIN

	IF m.child # NIL THEN

		close(m.child);

		m.child := NIL

	END

END closeChild;

PROCEDURE submenu (m: tMenu; keyboard: BOOLEAN): BOOLEAN;

VAR

	item: List.tItem;

	res: BOOLEAN;

BEGIN

	res := FALSE;

    item := List.getItem(m.items, m.selItem);

    IF (item # NIL) & item(tItem).enabled & (item(tItem).child # NIL) THEN

    	res := TRUE;

    	IF ~opened(item(tItem).child) THEN

    		closeChild(m);

    		item(tItem).child.keyboard := keyboard;

    		_open(item(tItem).child, m.winX + m.width - 2, m.winY + m.selItem*fontHeight);

    		m.child := item(tItem).child;

    	END

    ELSE

    	closeChild(m)

    END

    RETURN res

END submenu;

PROCEDURE getShortcut (key: INTEGER): BOOLEAN;

VAR

	item: tShortcut;

	res: INTEGER;

BEGIN

	item := shortcuts.first(tShortcut);

	WHILE (item # NIL) & (item.key # key) DO

		item := item.next(tShortcut)

	END;

	IF item # NIL THEN

		res := item.MenuItem

	ELSE

		res := 0

	END;

	SetItem(res)

	RETURN res # 0

END getShortcut;

PROCEDURE [stdcall] window (m: tMenu);

VAR

    x, y: INTEGER;

    msState: SET;

    key, temp: INTEGER;

    shift, ctrl: BOOLEAN;

BEGIN

    m.selItem := ORD(m.keyboard) - 1;

    m.cliItem := -1;

    m.keyboard := FALSE;

    K.SetEventsMask({0, 1, 5});

    WHILE TRUE DO

        CASE K.EventTimeout(100) OF

        |0:

        |1:

            draw_window(m)

        |2:

        	K.getKBState(shift, ctrl);

            key := K.GetKey() DIV 65536;

		    IF shift THEN

		    	INC(key, SHIFT)

		    END;

		    IF ctrl THEN

		    	INC(key, CTRL)

		    END;

        	CASE key OF

            |72:

                m.selItem := (m.selItem - 1) MOD m.items.count

            |80:

                m.selItem := (m.selItem + 1) MOD m.items.count

            |28:

                IF m.selItem >= 0 THEN

                    click(m, m.selItem)

                END;

                m.cliItem := -1

            |77:

                IF ~submenu(m, TRUE) THEN

                	click(m, -(getMainID(m) + 1))

                END;

                m.cliItem := -1

            |75:

            	IF m.parent # NIL THEN

                	escape(m)

            	ELSE

            		click(m, -(getMainID(m) - 1))

                END;

                m.cliItem := -1

            |1:

            	escape(m)

            ELSE

	            IF getShortcut(key) THEN

	            	IF m.parent # NIL THEN

	            		temp := m.parent.tid;

	            		m.parent.tid := 0;

	            		K.ExitID(temp)

	            	END;

	                exit(m)

	            END

            END;

            repaint(m)

        |6:

        	K.mouse(msState, x, y);

            IF (0 <= x) & (x < m.width) & (0 <= y) & (y < m.height) THEN

            	m.active := TRUE;

                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.active := FALSE;

                m.cliItem := -1;

                IF ({8, 9, 10, 16} * msState # {}) & ~isActive(m.child) THEN

                    exit(m)

                END

            END;

            repaint(m);

            IF submenu(m, FALSE) THEN END

        END

    END

END window;

PROCEDURE level (m: tMenu): INTEGER;

VAR

	res: INTEGER;

BEGIN

	res := 0;

	WHILE m.parent # NIL DO

		INC(res);

		m := m.parent

	END

	RETURN res

END level;

PROCEDURE open* (m: tMenu; x, y: INTEGER);

VAR

	L: INTEGER;

BEGIN

    IF m.tid = 0 THEN

        L := level(m);

        IF K.GetThreadSlot(TIDs[L]) = 0 THEN

        	m.winX := x;

        	m.winY := y;

	        SYSTEM.PUT(SYSTEM.ADR(stack[L][LEN(stack[0]) - 1]), m);

    	    m.tid := K.CreateThread(SYSTEM.ADR(window), stack[L]);

        	TIDs[L] := m.tid

        END

    END

END open;

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;

    item.child := NIL;

    List.append(items, item);

END AddMenuItem;

PROCEDURE delimiter* (items: List.tList);

BEGIN

    items.last(tItem).delim := TRUE

END delimiter;

PROCEDURE child* (items: List.tList; menu: tMenu);

BEGIN

    items.last(tItem).child := menu

END child;

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 check* (m: tMenu; id: INTEGER; value: BOOLEAN);

VAR

    item: tItem;

BEGIN

    item := getItem(m, id);

    IF item # NIL THEN

        item.check := ORD(value)

    END

END check;

PROCEDURE option* (m: tMenu; id: INTEGER; value: BOOLEAN);

VAR

    item: tItem;

BEGIN

    item := getItem(m, id);

    IF item # NIL THEN

        item.check := ORD(value)*2

    END

END option;

PROCEDURE isEnabled* (m: tMenu; id: INTEGER): BOOLEAN;

VAR

    item: tItem;

BEGIN

    item := getItem(m, id)

    RETURN (item # NIL) & item.enabled

END isEnabled;

PROCEDURE create* (items: List.tList): tMenu;

VAR

    m: tMenu;

    maxLength: INTEGER;

    item: tItem;

BEGIN

    NEW(m);

    m.tid := 0;

    m.active := FALSE;

    m.parent := NIL;

    m.child := NIL;

    m.mainID := 0;

    m.items  := items;

    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;

PROCEDURE AddShortcut* (key, MenuItem: INTEGER);

VAR

	item: tShortcut;

BEGIN

	NEW(item);

	item.key := key;

	item.MenuItem := MenuItem;

	List.append(shortcuts, item)

END AddShortcut;

PROCEDURE init* (_resetTimer: tProc);

VAR

	i: INTEGER;

BEGIN

	SetItem(0);

	shortcuts := List.create(NIL);

	resetTimer := _resetTimer;

	_open := open;

	FOR i := 0 TO maxLEVEL DO

		TIDs[i] := 0

	END

END init;

END Menu.