forked from KolibriOS/kolibrios
119 lines
2.9 KiB
Plaintext
119 lines
2.9 KiB
Plaintext
(*
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Copyright 2021 Anton Krotov
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This file is part of CEdit.
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CEdit is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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CEdit is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with CEdit. If not, see <http://www.gnu.org/licenses/>.
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*)
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MODULE CheckBox;
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IMPORT G := Graph, K := KolibriOS;
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CONST
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padding = 4;
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TYPE
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tCheckBox* = POINTER TO RECORD
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left*, top*: INTEGER;
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width, height: INTEGER;
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value*, mouse*: BOOLEAN;
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text: ARRAY 32 OF WCHAR;
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canvas: G.tCanvas
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END;
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PROCEDURE mark (canvas: G.tCanvas);
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BEGIN
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G.DLine(canvas, 2, 6, 6, -1);
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G.DLine(canvas, 2, 6, 7, -1);
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G.DLine(canvas, 7, 13, 9, 1);
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G.DLine(canvas, 7, 13, 10, 1);
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END mark;
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PROCEDURE paint* (chkbox: tCheckBox);
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VAR
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canvas: G.tCanvas;
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fontHeight: INTEGER;
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BEGIN
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canvas := chkbox.canvas;
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fontHeight := canvas.font.height - 1;
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G.SetColor(canvas, K.winColor);
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G.clear(canvas);
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G.SetColor(canvas, 0FFFFFFH);
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G.FillRect(canvas, 0, 0, fontHeight, fontHeight);
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G.SetColor(canvas, K.borderColor);
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G.Rect(canvas, 0, 0, fontHeight, fontHeight);
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IF chkbox.value THEN
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G.SetColor(canvas, 0008000H);
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mark(canvas)
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END;
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G.SetTextColor(canvas, K.textColor);
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G.SetBkColor(canvas, K.winColor);
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G.TextOut2(canvas, canvas.font.height + padding, 0, chkbox.text, LENGTH(chkbox.text));
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G.DrawCanvas(canvas, chkbox.left, chkbox.top)
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END paint;
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PROCEDURE create* (text: ARRAY OF WCHAR): tCheckBox;
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VAR
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res: tCheckBox;
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font: G.tFont;
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BEGIN
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font := G.CreateFont(1, "", {});
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NEW(res);
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res.left := 0;
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res.top := 0;
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res.value := FALSE;
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res.mouse := FALSE;
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COPY(text, res.text);
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res.canvas := G.CreateCanvas(font.height + padding + LENGTH(res.text)*font.width, font.height + 1);
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G.SetFont(res.canvas, font);
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res.width := res.canvas.width;
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res.height := res.canvas.height;
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RETURN res
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END create;
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PROCEDURE between (a, b, c: INTEGER): BOOLEAN;
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RETURN (a <= b) & (b <= c)
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END between;
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PROCEDURE MouseDown* (chkbox: tCheckBox; x, y: INTEGER);
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BEGIN
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IF (chkbox # NIL) & ~chkbox.mouse THEN
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DEC(x, chkbox.left);
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DEC(y, chkbox.top);
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chkbox.mouse := TRUE;
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IF between(0, x, chkbox.width) & between(0, y, chkbox.height) THEN
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chkbox.value := ~chkbox.value;
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END;
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paint(chkbox)
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END
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END MouseDown;
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PROCEDURE MouseUp* (chkbox: tCheckBox);
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BEGIN
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IF chkbox # NIL THEN
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chkbox.mouse := FALSE
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END
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END MouseUp;
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END CheckBox. |