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Facilitate exposing platform-exclusive interfaces to all platforms

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This makes the interfaces available, without implementation, in other
platforms and the editor, which facilitates documenting platform-exclusive
classes.

Platform-exclusive APIs must be set up in platform/<platform>/api/api.cpp.
Provide noop method-implementations where necessary.

Also setup and document the HTML5 platform's JavaScript singleton.
This commit is contained in:
Leon Krause 2017-11-16 01:33:48 +01:00
parent 6b34f10ab1
commit 63b1a096eb
12 changed files with 211 additions and 35 deletions
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5
SConstruct
View File

@ -22,6 +22,7 @@ platform_flags = {} # flags for each platform
active_platforms = []
active_platform_ids = []
platform_exporters = []
platform_apis = []
global_defaults = []
for x in glob.glob("platform/*"):
@ -34,6 +35,8 @@ for x in glob.glob("platform/*"):
if (os.path.exists(x + "/export/export.cpp")):
platform_exporters.append(x[9:])
if (os.path.exists(x + "/api/api.cpp")):
platform_apis.append(x[9:])
if (os.path.exists(x + "/globals/global_defaults.cpp")):
global_defaults.append(x[9:])
if (detect.is_active()):
@ -215,6 +218,7 @@ env_base.Append(CPPPATH=['#core', '#core/math', '#editor', '#drivers', '#'])
# configure ENV for platform
env_base.platform_exporters = platform_exporters
env_base.platform_apis = platform_apis
"""
sys.path.append("./platform/"+env_base["platform"])
@ -435,6 +439,7 @@ if selected_platform in platform_list:
SConscript("editor/SCsub")
SConscript("drivers/SCsub")
SConscript("platform/SCsub")
SConscript("modules/SCsub")
SConscript("main/SCsub")

2
doc/classes/@GlobalScope.xml
View File

@ -44,6 +44,8 @@
<member name="JSON" type="JSON" setter="" getter="">
[JSON] singleton
</member>
<member name="JavaScript" type="JavaScript" setter="" getter="">
</member>
<member name="Marshalls" type="Reference" setter="" getter="">
[Marshalls] singleton
</member>

30
doc/classes/JavaScript.xml Normal file
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@ -0,0 +1,30 @@
<?xml version="1.0" encoding="UTF-8" ?>
<class name="JavaScript" inherits="Object" category="Core" version="3.0-alpha">
<brief_description>
Singleton that connects the engine with the browser's JavaScript context in HTML5 export.
</brief_description>
<description>
The JavaScript singleton is implemented only in HTML5 export. It's used to access the browser's JavaScript context. This allows interaction with embedding pages or calling third-party JavaScript APIs.
</description>
<tutorials>
http://docs.godotengine.org/en/stable/learning/workflow/export/exporting_for_web.html#calling-javascript-from-script
</tutorials>
<demos>
</demos>
<methods>
<method name="eval">
<return type="Variant">
</return>
<argument index="0" name="code" type="String">
</argument>
<argument index="1" name="use_global_execution_context" type="bool" default="false">
</argument>
<description>
Execute the string [code]code[/code] as JavaScript code within the browser window. This is a call to the actual global JavaScript function [code]eval()[/code].
If [code]use_global_execution_context[/code] is [code]true[/code], the code will be evaluated in the global execution context. Otherwise, it is evaluated in the execution context of a function within the engine's runtime environment.
</description>
</method>
</methods>
<constants>
</constants>
</class>

3
main/main.cpp
View File

@ -35,6 +35,7 @@
#include "message_queue.h"
#include "modules/register_module_types.h"
#include "os/os.h"
#include "platform/register_platform_apis.h"
#include "project_settings.h"
#include "scene/register_scene_types.h"
#include "script_debugger_local.h"
@ -1108,6 +1109,7 @@ Error Main::setup2(Thread::ID p_main_tid_override) {
MAIN_PRINT("Main: Load Modules, Physics, Drivers, Scripts");
register_platform_apis();
register_module_types();
initialize_physics();
@ -1825,6 +1827,7 @@ void Main::cleanup() {
unregister_driver_types();
unregister_module_types();
unregister_platform_apis();
unregister_scene_types();
unregister_server_types();

30
platform/SCsub Normal file
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@ -0,0 +1,30 @@
#!/usr/bin/env python
from compat import open_utf8
Import('env')
platform_sources = []
# Register platform-exclusive APIs
reg_apis_inc = '#include "register_platform_apis.h"\n'
reg_apis = 'void register_platform_apis() {\n'
unreg_apis = 'void unregister_platform_apis() {\n'
for platform in env.platform_apis:
platform_dir = env.Dir(platform)
platform_sources.append(platform_dir.File('api/api.cpp'))
reg_apis += '\tregister_' + platform + '_api();\n'
unreg_apis += '\tunregister_' + platform + '_api();\n'
reg_apis_inc += '#include "' + platform + '/api/api.h"\n'
reg_apis_inc += '\n'
reg_apis += '}\n\n'
unreg_apis += '}\n'
f = open_utf8('register_platform_apis.gen.cpp', 'w')
f.write(reg_apis_inc)
f.write(reg_apis)
f.write(unreg_apis)
f.close()
platform_sources.append('register_platform_apis.gen.cpp')
env.Prepend(LIBS=env.Library('platform', platform_sources))
Export('env')

73
platform/javascript/api/api.cpp Normal file
View File

@ -0,0 +1,73 @@
/*************************************************************************/
/* api.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "api.h"
#include "engine.h"
#include "javascript_eval.h"
static JavaScript *javascript_eval;
void register_javascript_api() {
ClassDB::register_virtual_class<JavaScript>();
javascript_eval = memnew(JavaScript);
Engine::get_singleton()->add_singleton(Engine::Singleton("JavaScript", javascript_eval));
}
void unregister_javascript_api() {
memdelete(javascript_eval);
}
JavaScript *JavaScript::singleton = NULL;
JavaScript *JavaScript::get_singleton() {
return singleton;
}
JavaScript::JavaScript() {
ERR_FAIL_COND(singleton != NULL);
singleton = this;
}
JavaScript::~JavaScript() {}
void JavaScript::_bind_methods() {
ClassDB::bind_method(D_METHOD("eval", "code", "use_global_execution_context"), &JavaScript::eval, DEFVAL(false));
}
#if !defined(JAVASCRIPT_ENABLED) || !defined(JAVASCRIPT_EVAL_ENABLED)
Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
return Variant();
}
#endif

31
platform/javascript/api/api.h Normal file
View File

@ -0,0 +1,31 @@
/*************************************************************************/
/* api.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
void register_javascript_api();
void unregister_javascript_api();

3
platform/javascript/javascript_eval.h → platform/javascript/api/javascript_eval.h
View File

@ -27,8 +27,6 @@
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifdef JAVASCRIPT_EVAL_ENABLED
#ifndef JAVASCRIPT_EVAL_H
#define JAVASCRIPT_EVAL_H
@ -52,4 +50,3 @@ public:
};
#endif // JAVASCRIPT_EVAL_H
#endif // JAVASCRIPT_EVAL_ENABLED

23
platform/javascript/javascript_eval.cpp
View File

@ -29,16 +29,9 @@
/*************************************************************************/
#ifdef JAVASCRIPT_EVAL_ENABLED
#include "javascript_eval.h"
#include "api/javascript_eval.h"
#include "emscripten.h"
JavaScript *JavaScript::singleton = NULL;
JavaScript *JavaScript::get_singleton() {
return singleton;
}
extern "C" EMSCRIPTEN_KEEPALIVE uint8_t *resize_poolbytearray_and_open_write(PoolByteArray *p_arr, PoolByteArray::Write *r_write, int p_len) {
p_arr->resize(p_len);
@ -182,18 +175,4 @@ Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
return Variant();
}
void JavaScript::_bind_methods() {
ClassDB::bind_method(D_METHOD("eval", "code", "use_global_execution_context"), &JavaScript::eval, false);
}
JavaScript::JavaScript() {
ERR_FAIL_COND(singleton != NULL);
singleton = this;
}
JavaScript::~JavaScript() {
}
#endif // JAVASCRIPT_EVAL_ENABLED

5
platform/javascript/os_javascript.cpp
View File

@ -512,11 +512,6 @@ void OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver, i
#undef SET_EM_CALLBACK
#undef EM_CHECK
#ifdef JAVASCRIPT_EVAL_ENABLED
javascript_eval = memnew(JavaScript);
Engine::get_singleton()->add_singleton(Engine::Singleton("JavaScript", javascript_eval));
#endif
visual_server->init();
}

5
platform/javascript/os_javascript.h
View File

@ -32,7 +32,6 @@
#include "audio_driver_javascript.h"
#include "drivers/unix/os_unix.h"
#include "javascript_eval.h"
#include "main/input_default.h"
#include "os/input.h"
#include "os/main_loop.h"
@ -67,10 +66,6 @@ class OS_JavaScript : public OS_Unix {
PowerJavascript *power_manager;
#ifdef JAVASCRIPT_EVAL_ENABLED
JavaScript *javascript_eval;
#endif
static void _close_notification_funcs(const String &p_file, int p_flags);
void process_joypads();

36
platform/register_platform_apis.h Normal file
View File

@ -0,0 +1,36 @@
/*************************************************************************/
/* register_platform_apis.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef REGISTER_APIS_H
#define REGISTER_APIS_H
void register_platform_apis();
void unregister_platform_apis();
#endif