forked from KolibriOS/kolibrios
360 lines
8.7 KiB
Plaintext
360 lines
8.7 KiB
Plaintext
(*
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Copyright 2021, 2022 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 Graph;
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IMPORT SYSTEM, KOSAPI, Lines, Languages, E := Encodings;
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CONST
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modeCOPY = 0;
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modeNOT = 1;
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modeXOR = 2;
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triUp* = FALSE;
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triDown* = TRUE;
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triLeft* = FALSE;
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triRight* = TRUE;
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TYPE
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tFont* = POINTER TO RECORD
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handle*: INTEGER;
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height*: INTEGER;
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width*: INTEGER;
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size: INTEGER;
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flags: INTEGER;
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name*: ARRAY 256 OF WCHAR
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END;
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tCanvas* = POINTER TO RECORD
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bitmap: INTEGER;
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width*, height*: INTEGER;
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color, backColor, textColor: INTEGER;
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font*: tFont;
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mode: INTEGER
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END;
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VAR
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fonts*: ARRAY 3 OF tFont;
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PROCEDURE getRGB* (color: INTEGER; VAR r, g, b: BYTE);
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BEGIN
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b := color MOD 256;
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g := color DIV 256 MOD 256;
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r := color DIV 65536 MOD 256
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END getRGB;
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PROCEDURE DrawCanvas* (canvas: tCanvas; x, y: INTEGER);
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BEGIN
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KOSAPI.sysfunc7(65, canvas.bitmap, canvas.width*65536 + canvas.height, x*65536 + y, 32, 0, 0)
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END DrawCanvas;
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PROCEDURE SetColor* (canvas: tCanvas; color: INTEGER);
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BEGIN
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canvas.color := color
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END SetColor;
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PROCEDURE SetTextColor* (canvas: tCanvas; color: INTEGER);
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BEGIN
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canvas.textColor := color
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END SetTextColor;
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PROCEDURE SetBkColor* (canvas: tCanvas; color: INTEGER);
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BEGIN
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canvas.backColor := color
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END SetBkColor;
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PROCEDURE CreateFont (size: INTEGER; name: ARRAY OF WCHAR; attr: SET): tFont;
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VAR
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font: tFont;
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BEGIN
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ASSERT(size IN {0, 1, 2});
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NEW(font);
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font.size := size;
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IF size = 0 THEN
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font.width := 6;
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font.height := 9;
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font.flags := 08000000H
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ELSE
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font.width := size*8;
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font.height := size*16;
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IF size = 1 THEN
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font.flags := 28000000H
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ELSIF size = 2 THEN
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font.flags := 29000000H
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END
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END;
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font.name := name
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RETURN font
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END CreateFont;
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PROCEDURE SetFont* (canvas: tCanvas; font: tFont);
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BEGIN
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canvas.font := font
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END SetFont;
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PROCEDURE HLine* (canvas: tCanvas; y, x1, x2: INTEGER);
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VAR
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X1, X2, i: INTEGER;
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ptr: INTEGER;
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color: INTEGER;
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BEGIN
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X1 := MAX(MIN(x1, x2), 0);
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X2 := MIN(MAX(x1, x2), canvas.width - 1);
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IF (0 <= y) & (y < canvas.height) THEN
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color := canvas.color;
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ptr := canvas.bitmap + 4*(y*canvas.width + X1);
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FOR i := X1 TO X2 DO
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SYSTEM.PUT32(ptr, color);
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INC(ptr, 4)
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END
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END
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END HLine;
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PROCEDURE VLine* (canvas: tCanvas; x, y1, y2: INTEGER);
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VAR
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Y1, Y2, i: INTEGER;
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ptr: INTEGER;
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color: INTEGER;
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BEGIN
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Y1 := MAX(MIN(y1, y2), 0);
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Y2 := MIN(MAX(y1, y2), canvas.height - 1);
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IF (0 <= x) & (x < canvas.width) THEN
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color := canvas.color;
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ptr := canvas.bitmap + 4*(Y1*canvas.width + x);
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FOR i := Y1 TO Y2 DO
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IF canvas.mode = modeNOT THEN
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SYSTEM.GET32(ptr, color);
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color := ORD(-BITS(color)*{0..23})
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ELSIF canvas.mode = modeXOR THEN
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SYSTEM.GET32(ptr, color);
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color := ORD((BITS(color)/BITS(canvas.color))*{0..23})
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END;
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SYSTEM.PUT32(ptr, color);
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INC(ptr, canvas.width*4)
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END
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END
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END VLine;
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PROCEDURE notVLine* (canvas: tCanvas; x, y1, y2: INTEGER);
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BEGIN
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IF (0 <= y1) & (y1 < canvas.height) & (0 <= y2) & (y2 < canvas.height) THEN
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canvas.mode := modeNOT;
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VLine(canvas, x, y1, y2);
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canvas.mode := modeCOPY
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END
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END notVLine;
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PROCEDURE xorVLine* (canvas: tCanvas; x, y1, y2: INTEGER);
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BEGIN
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IF (0 <= y1) & (y1 < canvas.height) & (0 <= y2) & (y2 < canvas.height) THEN
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canvas.mode := modeXOR;
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SetColor(canvas, 0FF0000H);
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VLine(canvas, x, y1, y2);
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canvas.mode := modeCOPY
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END
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END xorVLine;
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PROCEDURE DLine* (canvas: tCanvas; x1, x2, y: INTEGER; k: INTEGER);
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VAR
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ptr: INTEGER;
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color: INTEGER;
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d: INTEGER;
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BEGIN
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ASSERT(ABS(k) = 1);
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color := canvas.color;
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ptr := canvas.bitmap + 4*(y*canvas.width + x1);
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d := 4*(1 - canvas.width*k);
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WHILE x1 <= x2 DO
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SYSTEM.PUT32(ptr, color);
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INC(ptr, d);
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INC(x1)
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END
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END DLine;
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PROCEDURE Triangle* (canvas: tCanvas; x1, y1, x2, y2: INTEGER; orientation: BOOLEAN);
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VAR
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i, a, b, d: INTEGER;
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line: PROCEDURE (canvas: tCanvas; c, c1, c2: INTEGER);
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BEGIN
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line := NIL;
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d := ORD(orientation)*2 - 1;
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IF y1 = y2 THEN
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i := y1;
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a := MIN(x1, x2);
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b := MAX(x1, x2);
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line := HLine
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ELSIF x1 = x2 THEN
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i := x1;
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a := MIN(y1, y2);
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b := MAX(y1, y2);
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line := VLine
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END;
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IF line # NIL THEN
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WHILE a <= b DO
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line(canvas, i, a, b);
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INC(i, d);
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INC(a);
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DEC(b)
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END
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END
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END Triangle;
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PROCEDURE FillRect* (canvas: tCanvas; left, top, right, bottom: INTEGER);
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VAR
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y: INTEGER;
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BEGIN
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FOR y := top TO bottom DO
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HLine(canvas, y, left, right)
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END
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END FillRect;
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PROCEDURE Rect* (canvas: tCanvas; left, top, right, bottom: INTEGER);
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BEGIN
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HLine(canvas, top, left, right);
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HLine(canvas, bottom, left, right);
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VLine(canvas, left, top, bottom);
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VLine(canvas, right, top, bottom)
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END Rect;
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PROCEDURE clear* (canvas: tCanvas);
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VAR
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ptr, ptr2, w, i: INTEGER;
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BEGIN
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HLine(canvas, 0, 0, canvas.width - 1);
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w := canvas.width*4;
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ptr := canvas.bitmap;
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ptr2 := ptr;
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i := canvas.height - 1;
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WHILE i > 0 DO
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INC(ptr2, w);
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SYSTEM.MOVE(ptr, ptr2, w);
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DEC(i)
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END
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END clear;
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PROCEDURE TextOut* (canvas: tCanvas; x, y: INTEGER; text: INTEGER; n: INTEGER; delimColor: INTEGER);
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CONST
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WCHAR_SIZE = 2;
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VAR
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color, i, ch: INTEGER;
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font: tFont;
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c: WCHAR;
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BEGIN
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font := canvas.font;
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IF (0 <= y) & (y <= canvas.height - font.height - 1) THEN
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IF x < 0 THEN
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i := -(x DIV font.width);
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INC(x, i*font.width);
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DEC(n, i)
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ELSE
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i := 0
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END;
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IF n > 0 THEN
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n := MAX(MIN(n, (canvas.width - x) DIV font.width), 0);
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color := canvas.color;
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canvas.color := canvas.backColor;
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FillRect(canvas, x, y, x + n*font.width, y + font.height);
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canvas.color := color;
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WHILE n > 0 DO
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SYSTEM.GET(text + i*WCHAR_SIZE, c);
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IF ~Lines.isSpace(c) THEN
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IF Languages.isDelim(c) THEN
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color := delimColor
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ELSE
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color := canvas.textColor
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END;
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IF c = Lines.NUL THEN
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c := 0X
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END;
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IF font = fonts[0] THEN
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ch := E.UNI[ORD(c), E.CP866];
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IF ch = E.UNDEF THEN
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c := "?"
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ELSE
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c := WCHR(ch)
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END
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END;
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KOSAPI.sysfunc6(4, x*65536 + y, font.flags + color, SYSTEM.ADR(c), 1, canvas.bitmap - 8)
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END;
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INC(x, font.width);
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INC(i);
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DEC(n)
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END
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END
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END
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END TextOut;
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PROCEDURE TextOut2* (canvas: tCanvas; x, y: INTEGER; text: ARRAY OF WCHAR; n: INTEGER);
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BEGIN
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TextOut(canvas, x, y, SYSTEM.ADR(text[0]), n, canvas.textColor)
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END TextOut2;
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PROCEDURE CreateCanvas* (width, height: INTEGER): tCanvas;
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VAR
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canvas: tCanvas;
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BEGIN
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NEW(canvas);
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canvas.bitmap := KOSAPI.malloc(width*height*4 + 8);
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ASSERT(canvas.bitmap # 0);
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SYSTEM.PUT32(canvas.bitmap, width);
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SYSTEM.PUT32(canvas.bitmap + 4, height);
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INC(canvas.bitmap, 8);
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canvas.width := width;
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canvas.height := height;
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canvas.mode := modeCOPY
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RETURN canvas
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END CreateCanvas;
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PROCEDURE destroy* (VAR canvas: tCanvas);
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BEGIN
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IF canvas # NIL THEN
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canvas.bitmap := KOSAPI.free(canvas.bitmap - 8);
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DISPOSE(canvas)
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END
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END destroy;
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BEGIN
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fonts[0] := CreateFont(0, "", {});
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fonts[1] := CreateFont(1, "", {});
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fonts[2] := CreateFont(2, "", {});
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END Graph. |