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64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/*
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* This file is part of Espruino, a JavaScript interpreter for Microcontrollers
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*
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* Copyright (C) 2013 Gordon Williams <gw@pur3.co.uk>
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* ----------------------------------------------------------------------------
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* Graphics Backend for drawing via JavaScript callback
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* ----------------------------------------------------------------------------
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*/
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#include "lcd_arraybuffer.h"
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#include "jsvar.h"
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#include "jsparse.h"
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#include "jsinteractive.h"
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void lcdSetPixel_JS(JsGraphics *gfx, int x, int y, unsigned int col) {
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// look up setPixel and execute it!
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// JsVar *lcdProto = jsvObjectGetChildIfExists(gfx->graphicsVar, JSPARSE_PROTOTYPE_VAR);
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// if (lcdProto) {
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JsVar *setPixel = jsvObjectGetChildIfExists(gfx->graphicsVar/*lcdProto*/, "iSetPixel");
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if (setPixel) {
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JsVar *args[3];
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args[0] = jsvNewFromInteger(x);
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args[1] = jsvNewFromInteger(y);
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args[2] = jsvNewFromInteger((JsVarInt)col);
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jsvUnLock(jspExecuteFunction(setPixel, gfx->graphicsVar, 3, args));
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jsvUnLockMany(3, args);
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jsvUnLock(setPixel);
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}
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// jsvUnLock(lcdProto);
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// }
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}
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void lcdFillRect_JS(struct JsGraphics *gfx, int x1, int y1, int x2, int y2, unsigned int col) {
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JsVar *fillRect = jsvObjectGetChildIfExists(gfx->graphicsVar/*lcdProto*/, "iFillRect");
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if (fillRect) {
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JsVar *args[5];
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args[0] = jsvNewFromInteger(x1);
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args[1] = jsvNewFromInteger(y1);
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args[2] = jsvNewFromInteger(x2);
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args[3] = jsvNewFromInteger(y2);
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args[4] = jsvNewFromInteger((JsVarInt)col);
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jsvUnLock(jspExecuteFunction(fillRect, gfx->graphicsVar, 5, args));
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jsvUnLockMany(5, args);
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jsvUnLock(fillRect);
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} else
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graphicsFallbackFillRect(gfx, x1,y1,x2,y2,col);
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}
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void lcdInit_JS(JsGraphics *gfx, JsVar *setPixelCallback, JsVar *fillRectCallback) {
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jsvObjectSetChild(gfx->graphicsVar, "iSetPixel", setPixelCallback);
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jsvObjectSetChild(gfx->graphicsVar, "iFillRect", fillRectCallback);
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}
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void lcdSetCallbacks_JS(JsGraphics *gfx) {
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gfx->setPixel = lcdSetPixel_JS;
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gfx->fillRect = lcdFillRect_JS;
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}
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