a443da65df
cedit: new version by akron1 eolite: fix scroll git-svn-id: svn://kolibrios.org@8762 a494cfbc-eb01-0410-851d-a64ba20cac60
144 lines
4.0 KiB
Plaintext
144 lines
4.0 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 Scroll;
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IMPORT G := Graph, K := KolibriOS;
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TYPE
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tScroll* = POINTER TO RECORD
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vertical, mouse: BOOLEAN;
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canvas: G.tCanvas;
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xSize*, ySize*, pos, mousePos: INTEGER;
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value*, maxVal*: INTEGER
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END;
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PROCEDURE draw* (scroll: tScroll; x, y: INTEGER);
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VAR
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pos, a, b: INTEGER;
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canvas: G.tCanvas;
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BEGIN
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IF scroll.vertical THEN
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a := scroll.ySize;
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b := scroll.xSize
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ELSE
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a := scroll.xSize;
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b := scroll.ySize
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END;
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IF scroll.maxVal > 0 THEN
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pos := (a - b)*scroll.value DIV scroll.maxVal
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ELSE
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pos := 0
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END;
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canvas := scroll.canvas;
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G.SetColor(canvas, K.scrollBkColor);
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G.clear(canvas);
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G.SetColor(canvas, K.borderColor);
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G.Rect(canvas, 0, 0, scroll.xSize - 1, scroll.ySize - 1);
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G.SetColor(canvas, K.scrollColor);
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DEC(b, 2);
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IF scroll.vertical THEN
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G.FillRect(canvas, 1, pos + 1, b, pos + b);
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G.SetColor(canvas, K.borderColor);
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G.Rect(canvas, 0, pos, b + 2, pos + b + 1);
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G.SetColor(canvas, K.btnTextColor);
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G.HLine(canvas, pos + 1 + b DIV 2, 4, b - 4);
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G.HLine(canvas, pos + 1 + b DIV 2 - 3, 6, b - 6);
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G.HLine(canvas, pos + 1 + b DIV 2 + 3, 6, b - 6);
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ELSE
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G.FillRect(canvas, pos + 1, 1, pos + b, b);
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G.SetColor(canvas, K.borderColor);
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G.Rect(canvas, pos, 0, pos + b + 1, b + 2);
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G.SetColor(canvas, K.btnTextColor);
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G.VLine(canvas, pos + b DIV 2, 4, b - 4);
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G.VLine(canvas, pos + b DIV 2 - 3, 6, b - 6);
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G.VLine(canvas, pos + b DIV 2 + 3, 6, b - 6);
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END;
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scroll.pos := pos;
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G.DrawCanvas(canvas, x, y);
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END draw;
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PROCEDURE create* (xSize, ySize: INTEGER): tScroll;
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VAR
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scroll: tScroll;
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BEGIN
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NEW(scroll);
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scroll.xSize := xSize;
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scroll.ySize := ySize;
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scroll.vertical := xSize < ySize;
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scroll.maxVal := 30;
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scroll.value := 0;
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scroll.mouse := FALSE;
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scroll.canvas := G.CreateCanvas(xSize, ySize)
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RETURN scroll
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END create;
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PROCEDURE resize* (scroll: tScroll; xSize, ySize: INTEGER);
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BEGIN
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scroll.xSize := xSize;
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scroll.ySize := ySize;
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scroll.vertical := xSize < ySize;
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G.destroy(scroll.canvas);
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scroll.canvas := G.CreateCanvas(xSize, ySize);
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END resize;
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PROCEDURE mouse* (scroll: tScroll; x, y: INTEGER);
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VAR
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pos, b: INTEGER;
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BEGIN
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IF scroll.vertical THEN
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pos := y - 1;
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b := scroll.xSize - 2
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ELSE
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pos := x - 1;
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b := scroll.ySize - 2
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END;
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IF ~scroll.mouse THEN
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scroll.mouse := TRUE;
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IF (scroll.pos <= pos) & (pos <= scroll.pos + b - 1) THEN
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scroll.mousePos := pos - scroll.pos
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ELSE
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scroll.mousePos := b DIV 2;
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scroll.value := (pos - scroll.mousePos)*scroll.maxVal DIV ABS(scroll.xSize - scroll.ySize)
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END
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ELSE
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scroll.value := (pos - scroll.mousePos)*scroll.maxVal DIV ABS(scroll.xSize - scroll.ySize)
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END;
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IF scroll.value < 0 THEN
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scroll.value := 0
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ELSIF scroll.value > scroll.maxVal THEN
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scroll.value := scroll.maxVal
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END
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END mouse;
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PROCEDURE MouseUp* (scroll: tScroll);
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BEGIN
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IF scroll # NIL THEN
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scroll.mouse := FALSE
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END
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END MouseUp;
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END Scroll. |