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176 lines
5.0 KiB
C
176 lines
5.0 KiB
C
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* JS reflection of the Screen info top-level object.
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*
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* Tom Pixley, 3/1/97
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*/
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#include "lm.h"
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typedef struct JSScreen {
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MochaDecoder *decoder;
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} JSScreen;
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enum screen_tinyid {
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SCREEN_WIDTH = -1,
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SCREEN_HEIGHT = -2,
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SCREEN_PIXEL_DEPTH = -3,
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SCREEN_COLOR_DEPTH = -4,
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SCREEN_AVAIL_WIDTH = -5,
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SCREEN_AVAIL_HEIGHT = -6,
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SCREEN_AVAIL_LEFT = -7,
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SCREEN_AVAIL_TOP = -8
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};
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static JSPropertySpec screen_props[] = {
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{"width", SCREEN_WIDTH, JSPROP_ENUMERATE | JSPROP_READONLY},
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{"height", SCREEN_HEIGHT, JSPROP_ENUMERATE | JSPROP_READONLY},
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{"pixelDepth", SCREEN_PIXEL_DEPTH, JSPROP_ENUMERATE | JSPROP_READONLY},
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{"colorDepth", SCREEN_COLOR_DEPTH, JSPROP_ENUMERATE | JSPROP_READONLY},
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{"availWidth", SCREEN_AVAIL_WIDTH, JSPROP_ENUMERATE | JSPROP_READONLY},
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{"availHeight", SCREEN_AVAIL_HEIGHT, JSPROP_ENUMERATE | JSPROP_READONLY},
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{"availLeft", SCREEN_AVAIL_LEFT, JSPROP_ENUMERATE | JSPROP_READONLY},
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{"availTop", SCREEN_AVAIL_TOP, JSPROP_ENUMERATE | JSPROP_READONLY},
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{0}
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};
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extern JSClass lm_screen_class;
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PR_STATIC_CALLBACK(JSBool)
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screen_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
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{
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MWContext *context;
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JSScreen *screen;
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jsint slot;
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int32 width, height, left, top, pixel, pallette;
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if (!JSVAL_IS_INT(id))
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return JS_TRUE;
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slot = JSVAL_TO_INT(id);
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screen = JS_GetInstancePrivate(cx, obj, &lm_screen_class, NULL);
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if (!screen)
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return JS_TRUE;
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context = screen->decoder->window_context;
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if (!context)
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return JS_TRUE;
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switch (slot) {
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case SCREEN_WIDTH:
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ET_PostGetScreenSize(context, &width, &height);
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*vp = INT_TO_JSVAL(width);
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break;
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case SCREEN_HEIGHT:
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ET_PostGetScreenSize(context, &width, &height);
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*vp = INT_TO_JSVAL(height);
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break;
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case SCREEN_PIXEL_DEPTH:
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ET_PostGetColorDepth(context, &pixel, &pallette);
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*vp = INT_TO_JSVAL(pixel);
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break;
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case SCREEN_COLOR_DEPTH:
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ET_PostGetColorDepth(context, &pixel, &pallette);
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*vp = INT_TO_JSVAL(pallette);
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break;
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case SCREEN_AVAIL_WIDTH:
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ET_PostGetAvailScreenRect(context, &width, &height, &left, &top);
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*vp = INT_TO_JSVAL(width);
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break;
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case SCREEN_AVAIL_HEIGHT:
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ET_PostGetAvailScreenRect(context, &width, &height, &left, &top);
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*vp = INT_TO_JSVAL(height);
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break;
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case SCREEN_AVAIL_LEFT:
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ET_PostGetAvailScreenRect(context, &width, &height, &left, &top);
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*vp = INT_TO_JSVAL(left);
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break;
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case SCREEN_AVAIL_TOP:
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ET_PostGetAvailScreenRect(context, &width, &height, &left, &top);
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*vp = INT_TO_JSVAL(top);
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break;
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default:
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return JS_TRUE;
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}
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return JS_TRUE;
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}
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PR_STATIC_CALLBACK(void)
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screen_finalize(JSContext *cx, JSObject *obj)
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{
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JSScreen *screen;
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screen = JS_GetPrivate(cx, obj);
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if (!screen)
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return;
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DROP_BACK_COUNT(screen->decoder);
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JS_free(cx, screen);
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}
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JSClass lm_screen_class = {
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"Screen", JSCLASS_HAS_PRIVATE,
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JS_PropertyStub, JS_PropertyStub, screen_getProperty, screen_getProperty,
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JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, screen_finalize
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};
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PR_STATIC_CALLBACK(JSBool)
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Screen(JSContext *cx, JSObject *obj,
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uint argc, jsval *argv, jsval *rval)
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{
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return JS_TRUE;
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}
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JSObject *
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lm_DefineScreen(MochaDecoder *decoder, JSObject *parent)
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{
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JSObject *obj;
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JSContext *cx;
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JSScreen *screen;
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if (parent == decoder->window_object) {
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obj = decoder->screen;
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if (obj)
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return obj;
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}
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cx = decoder->js_context;
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if (!(screen = JS_malloc(cx, sizeof(JSScreen))))
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return NULL;
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screen->decoder = NULL; /* in case of error below */
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obj = JS_InitClass(cx, decoder->window_object, NULL, &lm_screen_class,
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Screen, 0, screen_props, NULL, NULL, NULL);
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if (!obj || !JS_SetPrivate(cx, obj, screen)) {
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JS_free(cx, screen);
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return NULL;
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}
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if (!JS_DefineProperty(cx, parent, "screen",
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OBJECT_TO_JSVAL(obj), NULL, NULL,
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JSPROP_ENUMERATE | JSPROP_READONLY)) {
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return NULL;
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}
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screen->decoder = HOLD_BACK_COUNT(decoder);
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if (parent == decoder->window_object)
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decoder->screen = obj;
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return obj;
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}
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