JSInterface_GUITypes.cpp

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/* Copyright (C) 2013 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * 0 A.D. is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "precompiled.h"

#include "JSInterface_GUITypes.h"
#include "ps/CStr.h"

/**** GUISize ****/
JSClass JSI_GUISize::JSI_class = {
    "GUISize", 0,
        JS_PropertyStub, JS_PropertyStub,
        JS_PropertyStub, JS_StrictPropertyStub,
        JS_EnumerateStub, JS_ResolveStub,
        JS_ConvertStub, JS_FinalizeStub,
        NULL, NULL, NULL, JSI_GUISize::construct
};

JSPropertySpec JSI_GUISize::JSI_props[] = 
{
    { "left",       0,  JSPROP_ENUMERATE},
    { "top",        1,  JSPROP_ENUMERATE},
    { "right",      2,  JSPROP_ENUMERATE},
    { "bottom",     3,  JSPROP_ENUMERATE},
    { "rleft",      4,  JSPROP_ENUMERATE},
    { "rtop",       5,  JSPROP_ENUMERATE},
    { "rright",     6,  JSPROP_ENUMERATE},
    { "rbottom",    7,  JSPROP_ENUMERATE},
    { 0 }
};

JSFunctionSpec JSI_GUISize::JSI_methods[] = 
{
    { "toString", JSI_GUISize::toString, 0, 0 },
    { 0 }
};

JSBool JSI_GUISize::construct(JSContext* cx, uintN argc, jsval* vp)
{
    JSObject* obj = JS_NewObject(cx, &JSI_GUISize::JSI_class, NULL, NULL);

    if (argc == 8)
    {
        JS_SetProperty(cx, obj, "left",     &JS_ARGV(cx, vp)[0]);
        JS_SetProperty(cx, obj, "top",      &JS_ARGV(cx, vp)[1]);
        JS_SetProperty(cx, obj, "right",    &JS_ARGV(cx, vp)[2]);
        JS_SetProperty(cx, obj, "bottom",   &JS_ARGV(cx, vp)[3]);
        JS_SetProperty(cx, obj, "rleft",    &JS_ARGV(cx, vp)[4]);
        JS_SetProperty(cx, obj, "rtop",     &JS_ARGV(cx, vp)[5]);
        JS_SetProperty(cx, obj, "rright",   &JS_ARGV(cx, vp)[6]);
        JS_SetProperty(cx, obj, "rbottom",  &JS_ARGV(cx, vp)[7]);
    }
    else if (argc == 4)
    {
        jsval zero = JSVAL_ZERO;
        JS_SetProperty(cx, obj, "left",     &JS_ARGV(cx, vp)[0]);
        JS_SetProperty(cx, obj, "top",      &JS_ARGV(cx, vp)[1]);
        JS_SetProperty(cx, obj, "right",    &JS_ARGV(cx, vp)[2]);
        JS_SetProperty(cx, obj, "bottom",   &JS_ARGV(cx, vp)[3]);
        JS_SetProperty(cx, obj, "rleft",    &zero);
        JS_SetProperty(cx, obj, "rtop",     &zero);
        JS_SetProperty(cx, obj, "rright",   &zero);
        JS_SetProperty(cx, obj, "rbottom",  &zero);
    }
    else
    {
        jsval zero = JSVAL_ZERO;
        JS_SetProperty(cx, obj, "left",     &zero);
        JS_SetProperty(cx, obj, "top",      &zero);
        JS_SetProperty(cx, obj, "right",    &zero);
        JS_SetProperty(cx, obj, "bottom",   &zero);
        JS_SetProperty(cx, obj, "rleft",    &zero);
        JS_SetProperty(cx, obj, "rtop",     &zero);
        JS_SetProperty(cx, obj, "rright",   &zero);
        JS_SetProperty(cx, obj, "rbottom",  &zero);
    }

    JS_SET_RVAL(cx, vp, OBJECT_TO_JSVAL(obj));
    return JS_TRUE;
}

// Produces "10", "-10", "50%", "50%-10", "50%+10", etc
CStr ToPercentString(double pix, double per)
{
    if (per == 0)
        return CStr::FromDouble(pix);
    else
        return CStr::FromDouble(per)+"%"+( pix == 0.0 ? CStr() : pix > 0.0 ? CStr("+")+CStr::FromDouble(pix) : CStr::FromDouble(pix) );
}

JSBool JSI_GUISize::toString(JSContext* cx, uintN argc, jsval* vp)
{
    UNUSED2(argc);

    CStr buffer;

    try
    {
#define SIDE(side) buffer += ToPercentString(g_ScriptingHost.GetObjectProperty_Double(JS_THIS_OBJECT(cx, vp), #side), g_ScriptingHost.GetObjectProperty_Double(JS_THIS_OBJECT(cx, vp), "r"#side));
        SIDE(left);
        buffer += " ";
        SIDE(top);
        buffer += " ";
        SIDE(right);
        buffer += " ";
        SIDE(bottom);
#undef SIDE
    }
    catch (PSERROR_Scripting_ConversionFailed&)
    {
        JS_SET_RVAL(cx, vp, STRING_TO_JSVAL(JS_NewStringCopyZ(cx, "<Error converting value to numbers>")));
        return JS_TRUE;
    }

    JS_SET_RVAL(cx, vp, STRING_TO_JSVAL(JS_NewStringCopyZ(cx, buffer.c_str())));
    return JS_TRUE;
}


/**** GUIColor ****/


JSClass JSI_GUIColor::JSI_class = {
    "GUIColor", 0,
        JS_PropertyStub, JS_PropertyStub,
        JS_PropertyStub, JS_StrictPropertyStub,
        JS_EnumerateStub, JS_ResolveStub,
        JS_ConvertStub, JS_FinalizeStub,
        NULL, NULL, NULL, JSI_GUIColor::construct
};

JSPropertySpec JSI_GUIColor::JSI_props[] = 
{
    { "r",  0,  JSPROP_ENUMERATE},
    { "g",  1,  JSPROP_ENUMERATE},
    { "b",  2,  JSPROP_ENUMERATE},
    { "a",  3,  JSPROP_ENUMERATE},
    { 0 }
};

JSFunctionSpec JSI_GUIColor::JSI_methods[] = 
{
    { "toString", JSI_GUIColor::toString, 0, 0 },
    { 0 }
};

JSBool JSI_GUIColor::construct(JSContext* cx, uintN argc, jsval* vp)
{
    JSObject* obj = JS_NewObject(cx, &JSI_GUIColor::JSI_class, NULL, NULL);

    if (argc == 4)
    {
        JS_SetProperty(cx, obj, "r", &JS_ARGV(cx, vp)[0]);
        JS_SetProperty(cx, obj, "g", &JS_ARGV(cx, vp)[1]);
        JS_SetProperty(cx, obj, "b", &JS_ARGV(cx, vp)[2]);
        JS_SetProperty(cx, obj, "a", &JS_ARGV(cx, vp)[3]);
    }
    else
    {
        // Nice magenta:
        jsval c;
        if (!JS_NewNumberValue(cx, 1.0, &c))
            return JS_FALSE;
        JS_SetProperty(cx, obj, "r", &c);
        JS_SetProperty(cx, obj, "b", &c);
        JS_SetProperty(cx, obj, "a", &c);
        if (!JS_NewNumberValue(cx, 0.0, &c))
            return JS_FALSE;
        JS_SetProperty(cx, obj, "g", &c);
    }

    JS_SET_RVAL(cx, vp, OBJECT_TO_JSVAL(obj));
    return JS_TRUE;
}

JSBool JSI_GUIColor::toString(JSContext* cx, uintN argc, jsval* vp)
{
    UNUSED2(argc);

    jsdouble r, g, b, a;
    if (!JS_ValueToNumber(cx, g_ScriptingHost.GetObjectProperty(JS_THIS_OBJECT(cx, vp), "r"), &r)) return JS_FALSE;
    if (!JS_ValueToNumber(cx, g_ScriptingHost.GetObjectProperty(JS_THIS_OBJECT(cx, vp), "g"), &g)) return JS_FALSE;
    if (!JS_ValueToNumber(cx, g_ScriptingHost.GetObjectProperty(JS_THIS_OBJECT(cx, vp), "b"), &b)) return JS_FALSE;
    if (!JS_ValueToNumber(cx, g_ScriptingHost.GetObjectProperty(JS_THIS_OBJECT(cx, vp), "a"), &a)) return JS_FALSE;

    char buffer[256];
    // Convert to integers, to be compatible with the GUI's string SetSetting
    snprintf(buffer, 256, "%d %d %d %d",
        (int)(255.0 * r),
        (int)(255.0 * g),
        (int)(255.0 * b),
        (int)(255.0 * a));
    JS_SET_RVAL(cx, vp, STRING_TO_JSVAL(JS_NewStringCopyZ(cx, buffer)));
    return JS_TRUE;
}

/**** GUIMouse ****/


JSClass JSI_GUIMouse::JSI_class = {
    "GUIMouse", 0,
        JS_PropertyStub, JS_PropertyStub,
        JS_PropertyStub, JS_StrictPropertyStub,
        JS_EnumerateStub, JS_ResolveStub,
        JS_ConvertStub, JS_FinalizeStub,
        NULL, NULL, NULL, JSI_GUIMouse::construct
};

JSPropertySpec JSI_GUIMouse::JSI_props[] = 
{
    { "x",          0,  JSPROP_ENUMERATE},
    { "y",          1,  JSPROP_ENUMERATE},
    { "buttons",    2,  JSPROP_ENUMERATE},
    { 0 }
};

JSFunctionSpec JSI_GUIMouse::JSI_methods[] = 
{
    { "toString", JSI_GUIMouse::toString, 0, 0 },
    { 0 }
};

JSBool JSI_GUIMouse::construct(JSContext* cx, uintN argc, jsval* vp)
{
    JSObject* obj = JS_NewObject(cx, &JSI_GUIMouse::JSI_class, NULL, NULL);

    if (argc == 3)
    {
        JS_SetProperty(cx, obj, "x", &JS_ARGV(cx, vp)[0]);
        JS_SetProperty(cx, obj, "y", &JS_ARGV(cx, vp)[1]);
        JS_SetProperty(cx, obj, "buttons", &JS_ARGV(cx, vp)[2]);
    }
    else
    {
        jsval zero = JSVAL_ZERO;
        JS_SetProperty(cx, obj, "x", &zero);
        JS_SetProperty(cx, obj, "y", &zero);
        JS_SetProperty(cx, obj, "buttons", &zero);
    }

    JS_SET_RVAL(cx, vp, OBJECT_TO_JSVAL(obj));
    return JS_TRUE;
}

JSBool JSI_GUIMouse::toString(JSContext* cx, uintN argc, jsval* vp)
{
    UNUSED2(argc);

    int32 x, y, buttons;
    if (!JS_ValueToECMAInt32(cx, g_ScriptingHost.GetObjectProperty(JS_THIS_OBJECT(cx, vp), "x"), &x)) return JS_FALSE;
    if (!JS_ValueToECMAInt32(cx, g_ScriptingHost.GetObjectProperty(JS_THIS_OBJECT(cx, vp), "y"), &y)) return JS_FALSE;
    if (!JS_ValueToECMAInt32(cx, g_ScriptingHost.GetObjectProperty(JS_THIS_OBJECT(cx, vp), "buttons"), &buttons)) return JS_FALSE;

    char buffer[256];
    snprintf(buffer, 256, "%d %d %d", x, y, buttons);
    JS_SET_RVAL(cx, vp, STRING_TO_JSVAL(JS_NewStringCopyZ(cx, buffer)));
    return JS_TRUE;
}


// Initialise all the types at once:
void JSI_GUITypes::init()
{
    g_ScriptingHost.DefineCustomObjectType(&JSI_GUISize::JSI_class,  JSI_GUISize::construct,  1, JSI_GUISize::JSI_props,  JSI_GUISize::JSI_methods,  NULL, NULL);
    g_ScriptingHost.DefineCustomObjectType(&JSI_GUIColor::JSI_class, JSI_GUIColor::construct, 1, JSI_GUIColor::JSI_props, JSI_GUIColor::JSI_methods, NULL, NULL);
    g_ScriptingHost.DefineCustomObjectType(&JSI_GUIMouse::JSI_class, JSI_GUIMouse::construct, 1, JSI_GUIMouse::JSI_props, JSI_GUIMouse::JSI_methods, NULL, NULL);
}