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Initial merge of Emscripten port!

Browse Source 
With this commit, you can compile SDL2 with Emscripten
( http://emscripten.org/ ), and make your SDL-based C/C++ program
into a web app.

This port was due to the efforts of several people, including: Charlie Birks,
Sathyanarayanan Gunasekaran, Jukka Jyl?nki, Alon Zakai, Edward Rudd,
Bruce Mitchener, and Martin Gerhardy. (Thanks, everyone!)
This commit is contained in:
Ryan C. Gordon
2014-12-18 00:19:52 -05:00
parent a228b67d88
commit fe40a17224
61 changed files with 4047 additions and 600 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/audio/SDL_audio.c
View File

@@ -71,6 +71,7 @@ extern AudioBootStrap FUSIONSOUND_bootstrap;
extern AudioBootStrap ANDROIDAUD_bootstrap;
extern AudioBootStrap PSPAUD_bootstrap;
extern AudioBootStrap SNDIO_bootstrap;
extern AudioBootStrap EmscriptenAudio_bootstrap;
/* Available audio drivers */
@@ -140,6 +141,9 @@ static const AudioBootStrap *const bootstrap[] = {
#endif
#if SDL_AUDIO_DRIVER_PSP
&PSPAUD_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_EMSCRIPTEN
&EmscriptenAudio_bootstrap,
#endif
NULL
};

271
src/audio/emscripten/SDL_emscriptenaudio.c Normal file
View File

@@ -0,0 +1,271 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_AUDIO_DRIVER_EMSCRIPTEN
#include "SDL_audio.h"
#include "SDL_log.h"
#include "../SDL_audio_c.h"
#include "SDL_emscriptenaudio.h"
#include <emscripten/emscripten.h>
static int
copyData(_THIS)
{
int byte_len;
if (this->hidden->write_off + this->convert.len_cvt > this->hidden->mixlen) {
if (this->hidden->write_off > this->hidden->read_off) {
SDL_memmove(this->hidden->mixbuf,
this->hidden->mixbuf + this->hidden->read_off,
this->hidden->mixlen - this->hidden->read_off);
this->hidden->write_off = this->hidden->write_off - this->hidden->read_off;
} else {
this->hidden->write_off = 0;
}
this->hidden->read_off = 0;
}
SDL_memcpy(this->hidden->mixbuf + this->hidden->write_off,
this->convert.buf,
this->convert.len_cvt);
this->hidden->write_off += this->convert.len_cvt;
byte_len = this->hidden->write_off - this->hidden->read_off;
return byte_len;
}
static void
HandleAudioProcess(_THIS)
{
Uint8 *buf = NULL;
int byte_len = 0;
int bytes = SDL_AUDIO_BITSIZE(this->spec.format) / 8;
int bytes_in = SDL_AUDIO_BITSIZE(this->convert.src_format) / 8;
int i;
/* Only do soemthing if audio is enabled */
if (!this->enabled)
return;
if (this->paused)
return;
if (this->convert.needed) {
if (this->hidden->conv_in_len != 0) {
this->convert.len = this->hidden->conv_in_len * bytes_in * this->spec.channels;
}
(*this->spec.callback) (this->spec.userdata,
this->convert.buf,
this->convert.len);
SDL_ConvertAudio(&this->convert);
buf = this->convert.buf;
byte_len = this->convert.len_cvt;
/* size mismatch*/
if (byte_len != this->spec.size) {
if (!this->hidden->mixbuf) {
this->hidden->mixlen = this->spec.size > byte_len ? this->spec.size * 2 : byte_len * 2;
this->hidden->mixbuf = SDL_malloc(this->hidden->mixlen);
}
/* copy existing data */
byte_len = copyData(this);
/* read more data*/
while (byte_len < this->spec.size) {
(*this->spec.callback) (this->spec.userdata,
this->convert.buf,
this->convert.len);
SDL_ConvertAudio(&this->convert);
byte_len = copyData(this);
}
byte_len = this->spec.size;
buf = this->hidden->mixbuf + this->hidden->read_off;
this->hidden->read_off += byte_len;
}
} else {
if (!this->hidden->mixbuf) {
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = SDL_malloc(this->hidden->mixlen);
}
(*this->spec.callback) (this->spec.userdata,
this->hidden->mixbuf,
this->hidden->mixlen);
buf = this->hidden->mixbuf;
byte_len = this->hidden->mixlen;
}
if (buf) {
EM_ASM_ARGS({
var numChannels = SDL2.audio.currentOutputBuffer['numberOfChannels'];
for (var c = 0; c < numChannels; ++c) {
var channelData = SDL2.audio.currentOutputBuffer['getChannelData'](c);
if (channelData.length != $1) {
throw 'Web Audio output buffer length mismatch! Destination size: ' + channelData.length + ' samples vs expected ' + $1 + ' samples!';
}
for (var j = 0; j < $1; ++j) {
channelData[j] = getValue($0 + (j*numChannels + c)*4, 'float');
}
}
}, buf, byte_len / bytes / this->spec.channels);
}
}
static void
Emscripten_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
/* Clean up the audio buffer */
SDL_free(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
Emscripten_OpenDevice(_THIS, const char *devname, int iscapture)
{
SDL_bool valid_format = SDL_FALSE;
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
int i;
float f;
while ((!valid_format) && (test_format)) {
switch (test_format) {
case AUDIO_F32: /* web audio only supports floats */
this->spec.format = test_format;
valid_format = SDL_TRUE;
break;
}
test_format = SDL_NextAudioFormat();
}
if (!valid_format) {
/* Didn't find a compatible format :( */
return SDL_SetError("No compatible audio format!");
}
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* based on parts of library_sdl.js */
/* create context (TODO: this puts stuff in the global namespace...)*/
EM_ASM({
if(typeof(SDL2) === 'undefined')
SDL2 = {};
if(typeof(SDL2.audio) === 'undefined')
SDL2.audio = {};
if (!SDL2.audioContext) {
if (typeof(AudioContext) !== 'undefined') {
SDL2.audioContext = new AudioContext();
} else if (typeof(webkitAudioContext) !== 'undefined') {
SDL2.audioContext = new webkitAudioContext();
} else {
throw 'Web Audio API is not available!';
}
}
});
/* limit to native freq */
int sampleRate = EM_ASM_INT_V({
return SDL2.audioContext['sampleRate'];
});
if(this->spec.freq != sampleRate) {
for (i = this->spec.samples; i > 0; i--) {
f = (float)i / (float)sampleRate * (float)this->spec.freq;
if (SDL_floor(f) == f) {
this->hidden->conv_in_len = SDL_floor(f);
break;
}
}
this->spec.freq = sampleRate;
}
SDL_CalculateAudioSpec(&this->spec);
/* setup a ScriptProcessorNode */
EM_ASM_ARGS({
SDL2.audio.scriptProcessorNode = SDL2.audioContext['createScriptProcessor']($1, 0, $0);
SDL2.audio.scriptProcessorNode['onaudioprocess'] = function (e) {
SDL2.audio.currentOutputBuffer = e['outputBuffer'];
Runtime.dynCall('vi', $2, [$3]);
};
SDL2.audio.scriptProcessorNode['connect'](SDL2.audioContext['destination']);
}, this->spec.channels, this->spec.samples, HandleAudioProcess, this);
return 0;
}
static int
Emscripten_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->OpenDevice = Emscripten_OpenDevice;
impl->CloseDevice = Emscripten_CloseDevice;
/* only one output */
impl->OnlyHasDefaultOutputDevice = 1;
/* no threads here */
impl->SkipMixerLock = 1;
impl->ProvidesOwnCallbackThread = 1;
/* check availability */
int available = EM_ASM_INT_V({
if (typeof(AudioContext) !== 'undefined') {
return 1;
} else if (typeof(webkitAudioContext) !== 'undefined') {
return 1;
}
return 0;
});
return available;
}
AudioBootStrap EmscriptenAudio_bootstrap = {
"emscripten", "SDL emscripten audio driver", Emscripten_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_EMSCRIPTEN */
/* vi: set ts=4 sw=4 expandtab: */

42
src/audio/emscripten/SDL_emscriptenaudio.h Normal file
View File

@@ -0,0 +1,42 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifndef _SDL_emscriptenaudio_h
#define _SDL_emscriptenaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
Uint8 *mixbuf;
Uint32 mixlen;
Uint32 conv_in_len;
Uint32 write_off, read_off;
};
#endif /* _SDL_emscriptenaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

8
src/cpuinfo/SDL_cpuinfo.c
View File

@@ -79,6 +79,7 @@ CPU_haveCPUID(void)
{
int has_CPUID = 0;
/* *INDENT-OFF* */
#ifndef SDL_CPUINFO_DISABLED
#if defined(__GNUC__) && defined(i386)
__asm__ (
" pushfl # Get original EFLAGS \n"
@@ -165,6 +166,7 @@ done:
"1: \n"
);
#endif
#endif
/* *INDENT-ON* */
return has_CPUID;
}
@@ -272,6 +274,7 @@ static int
CPU_haveAltiVec(void)
{
volatile int altivec = 0;
#ifndef SDL_CPUINFO_DISABLED
#if (defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))
#ifdef __OpenBSD__
int selectors[2] = { CTL_MACHDEP, CPU_ALTIVEC };
@@ -291,6 +294,7 @@ CPU_haveAltiVec(void)
altivec = 1;
}
signal(SIGILL, handler);
#endif
#endif
return altivec;
}
@@ -418,6 +422,7 @@ int
SDL_GetCPUCount(void)
{
if (!SDL_CPUCount) {
#ifndef SDL_CPUINFO_DISABLED
#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
if (SDL_CPUCount <= 0) {
SDL_CPUCount = (int)sysconf(_SC_NPROCESSORS_ONLN);
@@ -435,6 +440,7 @@ SDL_GetCPUCount(void)
GetSystemInfo(&info);
SDL_CPUCount = info.dwNumberOfProcessors;
}
#endif
#endif
/* There has to be at least 1, right? :) */
if (SDL_CPUCount <= 0) {
@@ -723,6 +729,7 @@ int
SDL_GetSystemRAM(void)
{
if (!SDL_SystemRAM) {
#ifndef SDL_CPUINFO_DISABLED
#if defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
if (SDL_SystemRAM <= 0) {
SDL_SystemRAM = (int)((Sint64)sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE) / (1024*1024));
@@ -756,6 +763,7 @@ SDL_GetSystemRAM(void)
SDL_SystemRAM = (int)(stat.ullTotalPhys / (1024 * 1024));
}
}
#endif
#endif
}
return SDL_SystemRAM;

2
src/dynapi/SDL_dynapi.h
View File

@@ -43,7 +43,7 @@
#include "TargetConditionals.h"
#endif
#if TARGET_OS_IPHONE || __native_client__ /* probably not useful on iOS or NACL. */
#if TARGET_OS_IPHONE || __native_client__ || __EMSCRIPTEN__ /* probably not useful on iOS, NACL or Emscripten. */
#define SDL_DYNAMIC_API 0
#elif SDL_BUILDING_WINRT /* probaly not useful on WinRT, given current .dll loading restrictions */
#define SDL_DYNAMIC_API 0

68
src/filesystem/emscripten/SDL_sysfilesystem.c Normal file
View File

@@ -0,0 +1,68 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifdef SDL_FILESYSTEM_EMSCRIPTEN
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* System dependent filesystem routines */
#include <errno.h>
#include <sys/stat.h>
#include "SDL_error.h"
#include "SDL_filesystem.h"
#include <emscripten/emscripten.h>
char *
SDL_GetBasePath(void)
{
char *retval = "/";
return SDL_strdup(retval);
}
char *
SDL_GetPrefPath(const char *org, const char *app)
{
const char *append = "/libsdl/";
char *retval;
size_t len = 0;
len = SDL_strlen(append) + SDL_strlen(org) + SDL_strlen(app) + 3;
retval = (char *) SDL_malloc(len);
if (!retval) {
SDL_OutOfMemory();
return NULL;
}
SDL_snprintf(retval, len, "%s%s/%s/", append, org, app);
if (mkdir(retval, 0700) != 0 && errno != EEXIST) {
SDL_SetError("Couldn't create directory '%s': '%s'", retval, strerror(errno));
return NULL;
}
return retval;
}
#endif /* SDL_FILESYSTEM_EMSCRIPTEN */
/* vi: set ts=4 sw=4 expandtab: */

16
src/joystick/SDL_gamecontroller.c
View File

@@ -89,6 +89,7 @@ typedef struct _ControllerMapping_t
static ControllerMapping_t *s_pSupportedControllers = NULL;
static ControllerMapping_t *s_pXInputMapping = NULL;
static ControllerMapping_t *s_pEmscriptenMapping = NULL;
/* The SDL game controller structure */
struct _SDL_GameController
@@ -263,7 +264,13 @@ ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
return s_pXInputMapping;
}
else
#endif /* SDL_JOYSTICK_XINPUT */
#endif
#if defined(SDL_JOYSTICK_EMSCRIPTEN)
if (s_pEmscriptenMapping) {
return s_pEmscriptenMapping;
}
else
#endif
{
SDL_JoystickGUID jGUID = SDL_JoystickGetDeviceGUID(device_index);
return SDL_PrivateGetControllerMappingForGUID(&jGUID);
@@ -668,6 +675,7 @@ SDL_GameControllerAddMapping(const char *mappingString)
SDL_JoystickGUID jGUID;
ControllerMapping_t *pControllerMapping;
SDL_bool is_xinput_mapping = SDL_FALSE;
SDL_bool is_emscripten_mapping = SDL_FALSE;
if (!mappingString) {
return SDL_InvalidParamError("mappingString");
@@ -680,6 +688,9 @@ SDL_GameControllerAddMapping(const char *mappingString)
if (!SDL_strcasecmp(pchGUID, "xinput")) {
is_xinput_mapping = SDL_TRUE;
}
if (!SDL_strcasecmp(pchGUID, "emscripten")) {
is_emscripten_mapping = SDL_TRUE;
}
jGUID = SDL_JoystickGetGUIDFromString(pchGUID);
SDL_free(pchGUID);
@@ -715,6 +726,9 @@ SDL_GameControllerAddMapping(const char *mappingString)
if (is_xinput_mapping) {
s_pXInputMapping = pControllerMapping;
}
if (is_emscripten_mapping) {
s_pEmscriptenMapping = pControllerMapping;
}
pControllerMapping->guid = jGUID;
pControllerMapping->name = pchName;
pControllerMapping->mapping = pchMapping;

2
src/joystick/SDL_gamecontrollerdb.h
View File

@@ -76,6 +76,8 @@ static const char *s_ControllerMappings [] =
#endif
#if defined(__ANDROID__)
"4e564944494120436f72706f72617469,NVIDIA Controller,a:b0,b:b1,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b9,leftstick:b7,lefttrigger:a4,leftx:a0,lefty:a1,rightshoulder:b10,rightstick:b8,righttrigger:a5,rightx:a2,righty:a3,start:b6,x:b2,y:b3,",
#elif defined(SDL_JOYSTICK_EMSCRIPTEN)
"emscripten,Standard Gamepad,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,lefttrigger:b6,righttrigger:b7,back:b8,start:b9,leftstick:b10,rightstick:b11,dpup:b12,dpdown:b13,dpleft:b14,dpright:b15,guide:b16,leftx:a0,lefty:a1,rightx:a2,righty:a3,",
#endif
NULL
};

426
src/joystick/emscripten/SDL_sysjoystick.c Normal file
View File

@@ -0,0 +1,426 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifdef SDL_JOYSTICK_EMSCRIPTEN
#include <stdio.h> /* For the definition of NULL */
#include "SDL_error.h"
#include "SDL_events.h"
#if !SDL_EVENTS_DISABLED
#include "../../events/SDL_events_c.h"
#endif
#include "SDL_joystick.h"
#include "SDL_hints.h"
#include "SDL_assert.h"
#include "SDL_timer.h"
#include "SDL_log.h"
#include "SDL_sysjoystick_c.h"
#include "../SDL_joystick_c.h"
static SDL_joylist_item * JoystickByIndex(int index);
static SDL_joylist_item *SDL_joylist = NULL;
static SDL_joylist_item *SDL_joylist_tail = NULL;
static int numjoysticks = 0;
static int instance_counter = 0;
int
Emscripten_JoyStickConnected(int eventType, const EmscriptenGamepadEvent *gamepadEvent, void *userData)
{
int i;
SDL_joylist_item *item;
if (JoystickByIndex(gamepadEvent->index) != NULL) {
return 1;
}
#if !SDL_EVENTS_DISABLED
SDL_Event event;
#endif
item = (SDL_joylist_item *) SDL_malloc(sizeof (SDL_joylist_item));
if (item == NULL) {
return 1;
}
SDL_zerop(item);
item->index = gamepadEvent->index;
item->name = SDL_strdup(gamepadEvent->id);
if ( item->name == NULL ) {
SDL_free(item);
return 1;
}
item->mapping = SDL_strdup(gamepadEvent->mapping);
if ( item->mapping == NULL ) {
SDL_free(item->name);
SDL_free(item);
return 1;
}
item->naxes = gamepadEvent->numAxes;
item->nbuttons = gamepadEvent->numButtons;
item->device_instance = instance_counter++;
item->timestamp = gamepadEvent->timestamp;
for( i = 0; i < item->naxes; i++) {
item->axis[i] = gamepadEvent->axis[i];
}
for( i = 0; i < item->nbuttons; i++) {
item->analogButton[i] = gamepadEvent->analogButton[i];
item->digitalButton[i] = gamepadEvent->digitalButton[i];
}
if (SDL_joylist_tail == NULL) {
SDL_joylist = SDL_joylist_tail = item;
} else {
SDL_joylist_tail->next = item;
SDL_joylist_tail = item;
}
++numjoysticks;
SDL_Log("%d",numjoysticks);
#if !SDL_EVENTS_DISABLED
event.type = SDL_JOYDEVICEADDED;
if (SDL_GetEventState(event.type) == SDL_ENABLE) {
event.jdevice.which = item->device_instance - 1;
if ( (SDL_EventOK == NULL) ||
(*SDL_EventOK) (SDL_EventOKParam, &event) ) {
SDL_PushEvent(&event);
}
}
#endif /* !SDL_EVENTS_DISABLED */
SDL_Log("Added joystick with index %d", item->index);
return 1;
}
int
Emscripten_JoyStickDisconnected(int eventType, const EmscriptenGamepadEvent *gamepadEvent, void *userData)
{
SDL_joylist_item *item = SDL_joylist;
SDL_joylist_item *prev = NULL;
#if !SDL_EVENTS_DISABLED
SDL_Event event;
#endif
while (item != NULL) {
if (item->index == gamepadEvent->index) {
break;
}
prev = item;
item = item->next;
}
if (item == NULL) {
return 1;
}
const int retval = item->device_instance;
if (item->joystick) {
item->joystick->hwdata = NULL;
}
if (prev != NULL) {
prev->next = item->next;
} else {
SDL_assert(SDL_joylist == item);
SDL_joylist = item->next;
}
if (item == SDL_joylist_tail) {
SDL_joylist_tail = prev;
}
/* Need to decrement the joystick count before we post the event */
--numjoysticks;
#if !SDL_EVENTS_DISABLED
event.type = SDL_JOYDEVICEREMOVED;
if (SDL_GetEventState(event.type) == SDL_ENABLE) {
event.jdevice.which = item->device_instance;
if ( (SDL_EventOK == NULL) ||
(*SDL_EventOK) (SDL_EventOKParam, &event) ) {
SDL_PushEvent(&event);
}
}
#endif /* !SDL_EVENTS_DISABLED */
SDL_Log("Removed joystick with index %d", retval);
SDL_free(item->name);
SDL_free(item->mapping);
SDL_free(item);
return 1;
}
/* Function to scan the system for joysticks.
* It should return 0, or -1 on an unrecoverable fatal error.
*/
int
SDL_SYS_JoystickInit(void)
{
int retval, i, numjs;
EmscriptenGamepadEvent gamepadState;
numjoysticks = 0;
numjs = emscripten_get_num_gamepads();
/* Check if gamepad is supported by browser */
if (numjs == EMSCRIPTEN_RESULT_NOT_SUPPORTED) {
return -1;
}
/* handle already connected gamepads */
if (numjs > 0) {
for(i = 0; i < numjs; i++) {
retval = emscripten_get_gamepad_status(i, &gamepadState);
if (retval == EMSCRIPTEN_RESULT_SUCCESS) {
Emscripten_JoyStickConnected(EMSCRIPTEN_EVENT_GAMEPADCONNECTED,
&gamepadState,
NULL);
}
}
}
retval = emscripten_set_gamepadconnected_callback(NULL,
0,
Emscripten_JoyStickConnected);
if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
return -1;
}
retval = emscripten_set_gamepaddisconnected_callback(NULL,
0,
Emscripten_JoyStickDisconnected);
if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
return -1;
}
return 0;
}
static SDL_joylist_item *
JoystickByIndex(int index)
{
SDL_joylist_item *item = SDL_joylist;
if (index < 0) {
return NULL;
}
while (item != NULL) {
if (item->index == index) {
break;
}
item = item->next;
}
return item;
}
int SDL_SYS_NumJoysticks()
{
return numjoysticks;
}
void SDL_SYS_JoystickDetect()
{
}
// we need to poll to see if the gamepad state has changed
SDL_bool SDL_SYS_JoystickNeedsPolling()
{
return SDL_TRUE;
}
/* Function to get the device-dependent name of a joystick */
const char *
SDL_SYS_JoystickNameForDeviceIndex(int index)
{
SDL_joylist_item *item = JoystickByIndex(index);
if (item == NULL) {
SDL_SetError("Joystick with index %d not found", index);
return NULL;
}
return item->name;
}
/* Function to perform the mapping from device index to the instance id for this index */
SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int index)
{
SDL_joylist_item *item = JoystickByIndex(index);
if (item == NULL) {
SDL_SetError("Joystick with index %d not found", index);
return NULL;
}
return item->device_instance;
}
/* Function to open a joystick for use.
The joystick to open is specified by the index field of the joystick.
This should fill the nbuttons and naxes fields of the joystick structure.
It returns 0, or -1 if there is an error.
*/
int
SDL_SYS_JoystickOpen(SDL_Joystick * joystick, int index)
{
SDL_joylist_item *item = JoystickByIndex(index);
if (item == NULL ) {
return SDL_SetError("No such device");
}
if (item->joystick != NULL) {
return SDL_SetError("Joystick already opened");
}
joystick->instance_id = item->device_instance;
joystick->hwdata = (struct joystick_hwdata *) item;
item->joystick = joystick;
/* HTML5 Gamepad API doesn't say anything about these */
joystick->nhats = 0;
joystick->nballs = 0;
joystick->nbuttons = item->nbuttons;
joystick->naxes = item->naxes;
return (0);
}
/* Function to determine is this joystick is attached to the system right now */
SDL_bool SDL_SYS_JoystickAttached(SDL_Joystick *joystick)
{
return !joystick->closed && (joystick->hwdata != NULL);
}
/* Function to update the state of a joystick - called as a device poll.
* This function shouldn't update the joystick structure directly,
* but instead should call SDL_PrivateJoystick*() to deliver events
* and update joystick device state.
*/
void
SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
{
EmscriptenGamepadEvent gamepadState;
SDL_joylist_item *item = SDL_joylist;
int i, result, button, buttonState;
while (item != NULL) {
result = emscripten_get_gamepad_status(item->index, &gamepadState);
if( result == EMSCRIPTEN_RESULT_SUCCESS) {
if(gamepadState.timestamp == 0 || gamepadState.timestamp != item->timestamp) {
for(i = 0; i < item->nbuttons; i++) {
if(item->digitalButton[i] != gamepadState.digitalButton[i]) {
buttonState = gamepadState.digitalButton[i]? SDL_PRESSED: SDL_RELEASED;
SDL_PrivateJoystickButton(item->joystick, i, buttonState);
}
}
for(i = 0; i < item->naxes; i++) {
if(item->axis[i] != gamepadState.axis[i]) {
// do we need to do conversion?
SDL_PrivateJoystickAxis(item->joystick, i,
(Sint16) (32767.*gamepadState.axis[i]));
}
}
item->timestamp = gamepadState.timestamp;
for( i = 0; i < item->naxes; i++) {
item->axis[i] = gamepadState.axis[i];
}
for( i = 0; i < item->nbuttons; i++) {
item->analogButton[i] = gamepadState.analogButton[i];
item->digitalButton[i] = gamepadState.digitalButton[i];
}
}
}
item = item->next;
}
}
/* Function to close a joystick after use */
void
SDL_SYS_JoystickClose(SDL_Joystick * joystick)
{
if (joystick->hwdata) {
((SDL_joylist_item*)joystick->hwdata)->joystick = NULL;
joystick->hwdata = NULL;
}
joystick->closed = 1;
}
/* Function to perform any system-specific joystick related cleanup */
void
SDL_SYS_JoystickQuit(void)
{
SDL_joylist_item *item = NULL;
SDL_joylist_item *next = NULL;
for (item = SDL_joylist; item; item = next) {
next = item->next;
SDL_free(item->mapping);
SDL_free(item->name);
SDL_free(item);
}
SDL_joylist = SDL_joylist_tail = NULL;
numjoysticks = 0;
instance_counter = 0;
}
SDL_JoystickGUID SDL_SYS_JoystickGetDeviceGUID(int index)
{
SDL_JoystickGUID guid;
/* the GUID is just the first 16 chars of the name for now */
const char *name = SDL_SYS_JoystickNameForDeviceIndex(index);
SDL_zero(guid);
SDL_memcpy(&guid, name, SDL_min(sizeof(guid), SDL_strlen(name)));
return guid;
}
SDL_JoystickGUID SDL_SYS_JoystickGetGUID(SDL_Joystick * joystick)
{
SDL_JoystickGUID guid;
/* the GUID is just the first 16 chars of the name for now */
const char *name = joystick->name;
SDL_zero(guid);
SDL_memcpy(&guid, name, SDL_min(sizeof(guid), SDL_strlen(name)));
return guid;
}
#endif /* SDL_JOYSTICK_EMSCRIPTEN */

76
src/joystick/emscripten/SDL_sysjoystick_c.h Normal file
View File

@@ -0,0 +1,76 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifdef SDL_JOYSTICK_EMSCRIPTEN
#include "../SDL_sysjoystick.h"
#include <emscripten/html5.h>
typedef enum
{
EMSCRIPTEN_CONTROLLER_BUTTON_INVALID = -1,
EMSCRIPTEN_CONTROLLER_BUTTON_A,
EMSCRIPTEN_CONTROLLER_BUTTON_B,
EMSCRIPTEN_CONTROLLER_BUTTON_X,
EMSCRIPTEN_CONTROLLER_BUTTON_Y,
EMSCRIPTEN_CONTROLLER_BUTTON_L1,
EMSCRIPTEN_CONTROLLER_BUTTON_R1,
EMSCRIPTEN_CONTROLLER_BUTTON_L2,
EMSCRIPTEN_CONTROLLER_BUTTON_R2,
EMSCRIPTEN_CONTROLLER_BUTTON_BACK,
EMSCRIPTEN_CONTROLLER_BUTTON_START,
EMSCRIPTEN_CONTROLLER_BUTTON_LEFTSTICK,
EMSCRIPTEN_CONTROLLER_BUTTON_RIGHTSTICK,
EMSCRIPTEN_CONTROLLER_DPAD_UP,
EMSCRIPTEN_CONTROLLER_DPAD_DOWN,
EMSCRIPTEN_CONTROLLER_DPAD_LEFT,
EMSCRIPTEN_CONTROLLER_DPAD_RIGHT,
EMSCRIPTEN_CONTROLLER_BUTTON_GUIDE,
} Emscripten_GameControllerButton;
static int EMSCRIPTEN_MAX_NBUTTONS = 18;
/* A linked list of available joysticks */
typedef struct SDL_joylist_item
{
int index;
char *name;
char *mapping;
SDL_JoystickID device_instance;
SDL_Joystick *joystick;
int nbuttons;
int naxes;
double timestamp;
double axis[64];
double analogButton[64];
EM_BOOL digitalButton[64];
struct SDL_joylist_item *next;
} SDL_joylist_item;
typedef SDL_joylist_item joystick_hwdata;
#endif /* SDL_JOYSTICK_EMSCRIPTEN */
/* vi: set ts=4 sw=4 expandtab: */

4
src/power/SDL_power.c
View File

@@ -38,6 +38,7 @@ SDL_bool SDL_GetPowerInfo_UIKit(SDL_PowerState *, int *, int *);
SDL_bool SDL_GetPowerInfo_Android(SDL_PowerState *, int *, int *);
SDL_bool SDL_GetPowerInfo_PSP(SDL_PowerState *, int *, int *);
SDL_bool SDL_GetPowerInfo_WinRT(SDL_PowerState *, int *, int *);
SDL_bool SDL_GetPowerInfo_Emscripten(SDL_PowerState *, int *, int *);
#ifndef SDL_POWER_DISABLED
#ifdef SDL_POWER_HARDWIRED
@@ -81,6 +82,9 @@ static SDL_GetPowerInfo_Impl implementations[] = {
#ifdef SDL_POWER_WINRT /* handles WinRT */
SDL_GetPowerInfo_WinRT,
#endif
#ifdef SDL_POWER_EMSCRIPTEN /* handles Emscripten */
SDL_GetPowerInfo_Emscripten,
#endif
#ifdef SDL_POWER_HARDWIRED
SDL_GetPowerInfo_Hardwired,

62
src/power/emscripten/SDL_syspower.c Normal file
View File

@@ -0,0 +1,62 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifndef SDL_POWER_DISABLED
#if SDL_POWER_EMSCRIPTEN
#include <emscripten/html5.h>
#include "SDL_power.h"
SDL_bool
SDL_GetPowerInfo_Emscripten(SDL_PowerState *state, int *seconds, int *percent)
{
EmscriptenBatteryEvent batteryState;
int haveBattery = 0;
if (emscripten_get_battery_status(&batteryState) == EMSCRIPTEN_RESULT_NOT_SUPPORTED)
return SDL_FALSE;
haveBattery = batteryState.level != 1.0 || !batteryState.charging || batteryState.chargingTime != 0.0;
if (!haveBattery) {
*state = SDL_POWERSTATE_NO_BATTERY;
*seconds = -1;
*percent = -1;
return SDL_TRUE;
}
if (batteryState.charging)
*state = batteryState.chargingTime == 0.0 ? SDL_POWERSTATE_CHARGED : SDL_POWERSTATE_CHARGING;
else
*state = SDL_POWERSTATE_ON_BATTERY;
*seconds = batteryState.dischargingTime;
*percent = batteryState.level * 100;
return SDL_TRUE;
}
#endif /* SDL_POWER_EMSCRIPTEN */
#endif /* SDL_POWER_DISABLED */
/* vi: set ts=4 sw=4 expandtab: */

4
src/render/opengles2/SDL_gles2funcs.h
View File

@@ -69,3 +69,7 @@ SDL_PROC(GLenum, glCheckFramebufferStatus, (GLenum))
SDL_PROC(void, glDeleteFramebuffers, (GLsizei, const GLuint *))
SDL_PROC(GLint, glGetAttribLocation, (GLuint, const GLchar *))
SDL_PROC(void, glGetProgramInfoLog, (GLuint, GLsizei, GLsizei*, GLchar*))
SDL_PROC(void, glGenBuffers, (GLsizei, GLuint *))
SDL_PROC(void, glBindBuffer, (GLenum, GLuint))
SDL_PROC(void, glBufferData, (GLenum, GLsizeiptr, const GLvoid *, GLenum))
SDL_PROC(void, glBufferSubData, (GLenum, GLintptr, GLsizeiptr, const GLvoid *))

55
src/render/opengles2/SDL_render_gles2.c
View File

@@ -180,6 +180,9 @@ typedef struct GLES2_DriverContext
GLES2_ProgramCache program_cache;
GLES2_ProgramCacheEntry *current_program;
Uint8 clear_r, clear_g, clear_b, clear_a;
GLuint vertex_buffers[4];
GLsizeiptr vertex_buffer_size[4];
} GLES2_DriverContext;
#define GLES2_MAX_CACHED_PROGRAMS 8
@@ -1385,6 +1388,32 @@ GLES2_SetDrawingState(SDL_Renderer * renderer)
return 0;
}
static int
GLES2_UpdateVertexBuffer(SDL_Renderer *renderer, GLES2_Attribute attr,
const void *vertexData, size_t dataSizeInBytes)
{
GLES2_DriverContext *data = (GLES2_DriverContext *)renderer->driverdata;
#if 0
data->glVertexAttribPointer(attr, attr == GLES2_ATTRIBUTE_ANGLE ? 1 : 2, GL_FLOAT, GL_FALSE, 0, vertexData);
#else
if (!data->vertex_buffers[attr])
data->glGenBuffers(1, &data->vertex_buffers[attr]);
data->glBindBuffer(GL_ARRAY_BUFFER, data->vertex_buffers[attr]);
if (data->vertex_buffer_size[attr] < dataSizeInBytes) {
data->glBufferData(GL_ARRAY_BUFFER, dataSizeInBytes, vertexData, GL_STREAM_DRAW);
data->vertex_buffer_size[attr] = dataSizeInBytes;
} else {
data->glBufferSubData(GL_ARRAY_BUFFER, 0, dataSizeInBytes, vertexData);
}
data->glVertexAttribPointer(attr, attr == GLES2_ATTRIBUTE_ANGLE ? 1 : 2, GL_FLOAT, GL_FALSE, 0, 0);
#endif
return 0;
}
static int
GLES2_RenderDrawPoints(SDL_Renderer *renderer, const SDL_FPoint *points, int count)
{
@@ -1405,7 +1434,8 @@ GLES2_RenderDrawPoints(SDL_Renderer *renderer, const SDL_FPoint *points, int cou
vertices[idx * 2] = x;
vertices[(idx * 2) + 1] = y;
}
data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
/*data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);*/
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_POSITION, vertices, count * 2 * sizeof(GLfloat));
data->glDrawArrays(GL_POINTS, 0, count);
SDL_stack_free(vertices);
return 0;
@@ -1431,7 +1461,8 @@ GLES2_RenderDrawLines(SDL_Renderer *renderer, const SDL_FPoint *points, int coun
vertices[idx * 2] = x;
vertices[(idx * 2) + 1] = y;
}
data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
/*data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);*/
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_POSITION, vertices, count * 2 * sizeof(GLfloat));
data->glDrawArrays(GL_LINE_STRIP, 0, count);
/* We need to close the endpoint of the line */
@@ -1472,7 +1503,8 @@ GLES2_RenderFillRects(SDL_Renderer *renderer, const SDL_FRect *rects, int count)
vertices[5] = yMax;
vertices[6] = xMax;
vertices[7] = yMax;
data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
/*data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);*/
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_POSITION, vertices, 8 * sizeof(GLfloat));
data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
return GL_CheckError("", renderer);
@@ -1668,7 +1700,8 @@ GLES2_RenderCopy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *s
vertices[5] = (dstrect->y + dstrect->h);
vertices[6] = (dstrect->x + dstrect->w);
vertices[7] = (dstrect->y + dstrect->h);
data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
/*data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);*/
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_POSITION, vertices, 8 * sizeof(GLfloat));
texCoords[0] = srcrect->x / (GLfloat)texture->w;
texCoords[1] = srcrect->y / (GLfloat)texture->h;
texCoords[2] = (srcrect->x + srcrect->w) / (GLfloat)texture->w;
@@ -1677,7 +1710,8 @@ GLES2_RenderCopy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *s
texCoords[5] = (srcrect->y + srcrect->h) / (GLfloat)texture->h;
texCoords[6] = (srcrect->x + srcrect->w) / (GLfloat)texture->w;
texCoords[7] = (srcrect->y + srcrect->h) / (GLfloat)texture->h;
data->glVertexAttribPointer(GLES2_ATTRIBUTE_TEXCOORD, 2, GL_FLOAT, GL_FALSE, 0, texCoords);
/*data->glVertexAttribPointer(GLES2_ATTRIBUTE_TEXCOORD, 2, GL_FLOAT, GL_FALSE, 0, texCoords);*/
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_TEXCOORD, texCoords, 8 * sizeof(GLfloat));
data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
return GL_CheckError("", renderer);
@@ -1727,9 +1761,13 @@ GLES2_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect
vertices[5] = vertices[7] = tmp;
}
data->glVertexAttribPointer(GLES2_ATTRIBUTE_ANGLE, 1, GL_FLOAT, GL_FALSE, 0, &fAngle);
/*data->glVertexAttribPointer(GLES2_ATTRIBUTE_ANGLE, 1, GL_FLOAT, GL_FALSE, 0, &fAngle);
data->glVertexAttribPointer(GLES2_ATTRIBUTE_CENTER, 2, GL_FLOAT, GL_FALSE, 0, translate);
data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
data->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);*/
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_ANGLE, fAngle, 4 * sizeof(GLfloat));
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_CENTER, translate, 8 * sizeof(GLfloat));
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_POSITION, vertices, 8 * sizeof(GLfloat));
texCoords[0] = srcrect->x / (GLfloat)texture->w;
texCoords[1] = srcrect->y / (GLfloat)texture->h;
@@ -1739,7 +1777,8 @@ GLES2_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect
texCoords[5] = (srcrect->y + srcrect->h) / (GLfloat)texture->h;
texCoords[6] = (srcrect->x + srcrect->w) / (GLfloat)texture->w;
texCoords[7] = (srcrect->y + srcrect->h) / (GLfloat)texture->h;
data->glVertexAttribPointer(GLES2_ATTRIBUTE_TEXCOORD, 2, GL_FLOAT, GL_FALSE, 0, texCoords);
/*data->glVertexAttribPointer(GLES2_ATTRIBUTE_TEXCOORD, 2, GL_FLOAT, GL_FALSE, 0, texCoords);*/
GLES2_UpdateVertexBuffer(renderer, GLES2_ATTRIBUTE_TEXCOORD, texCoords, 8 * sizeof(GLfloat));
data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
data->glDisableVertexAttribArray(GLES2_ATTRIBUTE_CENTER);
data->glDisableVertexAttribArray(GLES2_ATTRIBUTE_ANGLE);

3
src/video/SDL_sysvideo.h
View File

@@ -394,6 +394,9 @@ extern VideoBootStrap NACL_bootstrap;
#if SDL_VIDEO_DRIVER_VIVANTE
extern VideoBootStrap VIVANTE_bootstrap;
#endif
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
extern VideoBootStrap Emscripten_bootstrap;
#endif
extern SDL_VideoDevice *SDL_GetVideoDevice(void);
extern int SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode);

3
src/video/SDL_video.c
View File

@@ -98,6 +98,9 @@ static VideoBootStrap *bootstrap[] = {
#if SDL_VIDEO_DRIVER_NACL
&NACL_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
&Emscripten_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_DUMMY
&DUMMY_bootstrap,
#endif

638
src/video/emscripten/SDL_emscriptenevents.c Normal file
View File

@@ -0,0 +1,638 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
#include <emscripten/html5.h>
#include "../../events/SDL_events_c.h"
#include "../../events/SDL_keyboard_c.h"
#include "../../events/SDL_touch_c.h"
#include "SDL_emscriptenevents.h"
#include "SDL_emscriptenvideo.h"
#include "SDL_hints.h"
#define FULLSCREEN_MASK ( SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN )
/*
.which to scancode
https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Constants
*/
static const SDL_Scancode emscripten_scancode_table[] = {
/* 0 */ SDL_SCANCODE_UNKNOWN,
/* 1 */ SDL_SCANCODE_UNKNOWN,
/* 2 */ SDL_SCANCODE_UNKNOWN,
/* 3 */ SDL_SCANCODE_CANCEL,
/* 4 */ SDL_SCANCODE_UNKNOWN,
/* 5 */ SDL_SCANCODE_UNKNOWN,
/* 6 */ SDL_SCANCODE_HELP,
/* 7 */ SDL_SCANCODE_UNKNOWN,
/* 8 */ SDL_SCANCODE_BACKSPACE,
/* 9 */ SDL_SCANCODE_TAB,
/* 10 */ SDL_SCANCODE_UNKNOWN,
/* 11 */ SDL_SCANCODE_UNKNOWN,
/* 12 */ SDL_SCANCODE_UNKNOWN,
/* 13 */ SDL_SCANCODE_RETURN,
/* 14 */ SDL_SCANCODE_UNKNOWN,
/* 15 */ SDL_SCANCODE_UNKNOWN,
/* 16 */ SDL_SCANCODE_LSHIFT,
/* 17 */ SDL_SCANCODE_LCTRL,
/* 18 */ SDL_SCANCODE_LALT,
/* 19 */ SDL_SCANCODE_PAUSE,
/* 20 */ SDL_SCANCODE_CAPSLOCK,
/* 21 */ SDL_SCANCODE_UNKNOWN,
/* 22 */ SDL_SCANCODE_UNKNOWN,
/* 23 */ SDL_SCANCODE_UNKNOWN,
/* 24 */ SDL_SCANCODE_UNKNOWN,
/* 25 */ SDL_SCANCODE_UNKNOWN,
/* 26 */ SDL_SCANCODE_UNKNOWN,
/* 27 */ SDL_SCANCODE_ESCAPE,
/* 28 */ SDL_SCANCODE_UNKNOWN,
/* 29 */ SDL_SCANCODE_UNKNOWN,
/* 30 */ SDL_SCANCODE_UNKNOWN,
/* 31 */ SDL_SCANCODE_UNKNOWN,
/* 32 */ SDL_SCANCODE_SPACE,
/* 33 */ SDL_SCANCODE_PAGEUP,
/* 34 */ SDL_SCANCODE_PAGEDOWN,
/* 35 */ SDL_SCANCODE_END,
/* 36 */ SDL_SCANCODE_HOME,
/* 37 */ SDL_SCANCODE_LEFT,
/* 38 */ SDL_SCANCODE_UP,
/* 39 */ SDL_SCANCODE_RIGHT,
/* 40 */ SDL_SCANCODE_DOWN,
/* 41 */ SDL_SCANCODE_UNKNOWN,
/* 42 */ SDL_SCANCODE_UNKNOWN,
/* 43 */ SDL_SCANCODE_UNKNOWN,
/* 44 */ SDL_SCANCODE_UNKNOWN,
/* 45 */ SDL_SCANCODE_INSERT,
/* 46 */ SDL_SCANCODE_DELETE,
/* 47 */ SDL_SCANCODE_UNKNOWN,
/* 48 */ SDL_SCANCODE_0,
/* 49 */ SDL_SCANCODE_1,
/* 50 */ SDL_SCANCODE_2,
/* 51 */ SDL_SCANCODE_3,
/* 52 */ SDL_SCANCODE_4,
/* 53 */ SDL_SCANCODE_5,
/* 54 */ SDL_SCANCODE_6,
/* 55 */ SDL_SCANCODE_7,
/* 56 */ SDL_SCANCODE_8,
/* 57 */ SDL_SCANCODE_9,
/* 58 */ SDL_SCANCODE_UNKNOWN,
/* 59 */ SDL_SCANCODE_SEMICOLON,
/* 60 */ SDL_SCANCODE_UNKNOWN,
/* 61 */ SDL_SCANCODE_EQUALS,
/* 62 */ SDL_SCANCODE_UNKNOWN,
/* 63 */ SDL_SCANCODE_UNKNOWN,
/* 64 */ SDL_SCANCODE_UNKNOWN,
/* 65 */ SDL_SCANCODE_A,
/* 66 */ SDL_SCANCODE_B,
/* 67 */ SDL_SCANCODE_C,
/* 68 */ SDL_SCANCODE_D,
/* 69 */ SDL_SCANCODE_E,
/* 70 */ SDL_SCANCODE_F,
/* 71 */ SDL_SCANCODE_G,
/* 72 */ SDL_SCANCODE_H,
/* 73 */ SDL_SCANCODE_I,
/* 74 */ SDL_SCANCODE_J,
/* 75 */ SDL_SCANCODE_K,
/* 76 */ SDL_SCANCODE_L,
/* 77 */ SDL_SCANCODE_M,
/* 78 */ SDL_SCANCODE_N,
/* 79 */ SDL_SCANCODE_O,
/* 80 */ SDL_SCANCODE_P,
/* 81 */ SDL_SCANCODE_Q,
/* 82 */ SDL_SCANCODE_R,
/* 83 */ SDL_SCANCODE_S,
/* 84 */ SDL_SCANCODE_T,
/* 85 */ SDL_SCANCODE_U,
/* 86 */ SDL_SCANCODE_V,
/* 87 */ SDL_SCANCODE_W,
/* 88 */ SDL_SCANCODE_X,
/* 89 */ SDL_SCANCODE_Y,
/* 90 */ SDL_SCANCODE_Z,
/* 91 */ SDL_SCANCODE_LGUI,
/* 92 */ SDL_SCANCODE_UNKNOWN,
/* 93 */ SDL_SCANCODE_APPLICATION,
/* 94 */ SDL_SCANCODE_UNKNOWN,
/* 95 */ SDL_SCANCODE_UNKNOWN,
/* 96 */ SDL_SCANCODE_KP_0,
/* 97 */ SDL_SCANCODE_KP_1,
/* 98 */ SDL_SCANCODE_KP_2,
/* 99 */ SDL_SCANCODE_KP_3,
/* 100 */ SDL_SCANCODE_KP_4,
/* 101 */ SDL_SCANCODE_KP_5,
/* 102 */ SDL_SCANCODE_KP_6,
/* 103 */ SDL_SCANCODE_KP_7,
/* 104 */ SDL_SCANCODE_KP_8,
/* 105 */ SDL_SCANCODE_KP_9,
/* 106 */ SDL_SCANCODE_KP_MULTIPLY,
/* 107 */ SDL_SCANCODE_KP_PLUS,
/* 108 */ SDL_SCANCODE_UNKNOWN,
/* 109 */ SDL_SCANCODE_KP_MINUS,
/* 110 */ SDL_SCANCODE_KP_PERIOD,
/* 111 */ SDL_SCANCODE_KP_DIVIDE,
/* 112 */ SDL_SCANCODE_F1,
/* 113 */ SDL_SCANCODE_F2,
/* 114 */ SDL_SCANCODE_F3,
/* 115 */ SDL_SCANCODE_F4,
/* 116 */ SDL_SCANCODE_F5,
/* 117 */ SDL_SCANCODE_F6,
/* 118 */ SDL_SCANCODE_F7,
/* 119 */ SDL_SCANCODE_F8,
/* 120 */ SDL_SCANCODE_F9,
/* 121 */ SDL_SCANCODE_F10,
/* 122 */ SDL_SCANCODE_F11,
/* 123 */ SDL_SCANCODE_F12,
/* 124 */ SDL_SCANCODE_F13,
/* 125 */ SDL_SCANCODE_F14,
/* 126 */ SDL_SCANCODE_F15,
/* 127 */ SDL_SCANCODE_F16,
/* 128 */ SDL_SCANCODE_F17,
/* 129 */ SDL_SCANCODE_F18,
/* 130 */ SDL_SCANCODE_F19,
/* 131 */ SDL_SCANCODE_F20,
/* 132 */ SDL_SCANCODE_F21,
/* 133 */ SDL_SCANCODE_F22,
/* 134 */ SDL_SCANCODE_F23,
/* 135 */ SDL_SCANCODE_F24,
/* 136 */ SDL_SCANCODE_UNKNOWN,
/* 137 */ SDL_SCANCODE_UNKNOWN,
/* 138 */ SDL_SCANCODE_UNKNOWN,
/* 139 */ SDL_SCANCODE_UNKNOWN,
/* 140 */ SDL_SCANCODE_UNKNOWN,
/* 141 */ SDL_SCANCODE_UNKNOWN,
/* 142 */ SDL_SCANCODE_UNKNOWN,
/* 143 */ SDL_SCANCODE_UNKNOWN,
/* 144 */ SDL_SCANCODE_NUMLOCKCLEAR,
/* 145 */ SDL_SCANCODE_SCROLLLOCK,
/* 146 */ SDL_SCANCODE_UNKNOWN,
/* 147 */ SDL_SCANCODE_UNKNOWN,
/* 148 */ SDL_SCANCODE_UNKNOWN,
/* 149 */ SDL_SCANCODE_UNKNOWN,
/* 150 */ SDL_SCANCODE_UNKNOWN,
/* 151 */ SDL_SCANCODE_UNKNOWN,
/* 152 */ SDL_SCANCODE_UNKNOWN,
/* 153 */ SDL_SCANCODE_UNKNOWN,
/* 154 */ SDL_SCANCODE_UNKNOWN,
/* 155 */ SDL_SCANCODE_UNKNOWN,
/* 156 */ SDL_SCANCODE_UNKNOWN,
/* 157 */ SDL_SCANCODE_UNKNOWN,
/* 158 */ SDL_SCANCODE_UNKNOWN,
/* 159 */ SDL_SCANCODE_UNKNOWN,
/* 160 */ SDL_SCANCODE_UNKNOWN,
/* 161 */ SDL_SCANCODE_UNKNOWN,
/* 162 */ SDL_SCANCODE_UNKNOWN,
/* 163 */ SDL_SCANCODE_UNKNOWN,
/* 164 */ SDL_SCANCODE_UNKNOWN,
/* 165 */ SDL_SCANCODE_UNKNOWN,
/* 166 */ SDL_SCANCODE_UNKNOWN,
/* 167 */ SDL_SCANCODE_UNKNOWN,
/* 168 */ SDL_SCANCODE_UNKNOWN,
/* 169 */ SDL_SCANCODE_UNKNOWN,
/* 170 */ SDL_SCANCODE_UNKNOWN,
/* 171 */ SDL_SCANCODE_UNKNOWN,
/* 172 */ SDL_SCANCODE_UNKNOWN,
/* 173 */ SDL_SCANCODE_MINUS, /*FX*/
/* 174 */ SDL_SCANCODE_UNKNOWN,
/* 175 */ SDL_SCANCODE_UNKNOWN,
/* 176 */ SDL_SCANCODE_UNKNOWN,
/* 177 */ SDL_SCANCODE_UNKNOWN,
/* 178 */ SDL_SCANCODE_UNKNOWN,
/* 179 */ SDL_SCANCODE_UNKNOWN,
/* 180 */ SDL_SCANCODE_UNKNOWN,
/* 181 */ SDL_SCANCODE_UNKNOWN,
/* 182 */ SDL_SCANCODE_UNKNOWN,
/* 183 */ SDL_SCANCODE_UNKNOWN,
/* 184 */ SDL_SCANCODE_UNKNOWN,
/* 185 */ SDL_SCANCODE_UNKNOWN,
/* 186 */ SDL_SCANCODE_SEMICOLON, /*IE, Chrome, D3E legacy*/
/* 187 */ SDL_SCANCODE_EQUALS, /*IE, Chrome, D3E legacy*/
/* 188 */ SDL_SCANCODE_COMMA,
/* 189 */ SDL_SCANCODE_MINUS, /*IE, Chrome, D3E legacy*/
/* 190 */ SDL_SCANCODE_PERIOD,
/* 191 */ SDL_SCANCODE_SLASH,
/* 192 */ SDL_SCANCODE_GRAVE, /*FX, D3E legacy (SDL_SCANCODE_APOSTROPHE in IE/Chrome)*/
/* 193 */ SDL_SCANCODE_UNKNOWN,
/* 194 */ SDL_SCANCODE_UNKNOWN,
/* 195 */ SDL_SCANCODE_UNKNOWN,
/* 196 */ SDL_SCANCODE_UNKNOWN,
/* 197 */ SDL_SCANCODE_UNKNOWN,
/* 198 */ SDL_SCANCODE_UNKNOWN,
/* 199 */ SDL_SCANCODE_UNKNOWN,
/* 200 */ SDL_SCANCODE_UNKNOWN,
/* 201 */ SDL_SCANCODE_UNKNOWN,
/* 202 */ SDL_SCANCODE_UNKNOWN,
/* 203 */ SDL_SCANCODE_UNKNOWN,
/* 204 */ SDL_SCANCODE_UNKNOWN,
/* 205 */ SDL_SCANCODE_UNKNOWN,
/* 206 */ SDL_SCANCODE_UNKNOWN,
/* 207 */ SDL_SCANCODE_UNKNOWN,
/* 208 */ SDL_SCANCODE_UNKNOWN,
/* 209 */ SDL_SCANCODE_UNKNOWN,
/* 210 */ SDL_SCANCODE_UNKNOWN,
/* 211 */ SDL_SCANCODE_UNKNOWN,
/* 212 */ SDL_SCANCODE_UNKNOWN,
/* 213 */ SDL_SCANCODE_UNKNOWN,
/* 214 */ SDL_SCANCODE_UNKNOWN,
/* 215 */ SDL_SCANCODE_UNKNOWN,
/* 216 */ SDL_SCANCODE_UNKNOWN,
/* 217 */ SDL_SCANCODE_UNKNOWN,
/* 218 */ SDL_SCANCODE_UNKNOWN,
/* 219 */ SDL_SCANCODE_LEFTBRACKET,
/* 220 */ SDL_SCANCODE_BACKSLASH,
/* 221 */ SDL_SCANCODE_RIGHTBRACKET,
/* 222 */ SDL_SCANCODE_APOSTROPHE, /*FX, D3E legacy*/
};
/* "borrowed" from SDL_windowsevents.c */
int
Emscripten_ConvertUTF32toUTF8(Uint32 codepoint, char * text)
{
if (codepoint <= 0x7F) {
text[0] = (char) codepoint;
text[1] = '\0';
} else if (codepoint <= 0x7FF) {
text[0] = 0xC0 | (char) ((codepoint >> 6) & 0x1F);
text[1] = 0x80 | (char) (codepoint & 0x3F);
text[2] = '\0';
} else if (codepoint <= 0xFFFF) {
text[0] = 0xE0 | (char) ((codepoint >> 12) & 0x0F);
text[1] = 0x80 | (char) ((codepoint >> 6) & 0x3F);
text[2] = 0x80 | (char) (codepoint & 0x3F);
text[3] = '\0';
} else if (codepoint <= 0x10FFFF) {
text[0] = 0xF0 | (char) ((codepoint >> 18) & 0x0F);
text[1] = 0x80 | (char) ((codepoint >> 12) & 0x3F);
text[2] = 0x80 | (char) ((codepoint >> 6) & 0x3F);
text[3] = 0x80 | (char) (codepoint & 0x3F);
text[4] = '\0';
} else {
return SDL_FALSE;
}
return SDL_TRUE;
}
int
Emscripten_HandleMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
{
SDL_WindowData *window_data = userData;
int mx = mouseEvent->canvasX, my = mouseEvent->canvasY;
EmscriptenPointerlockChangeEvent pointerlock_status;
/* check for pointer lock */
emscripten_get_pointerlock_status(&pointerlock_status);
if (pointerlock_status.isActive) {
mx = mouseEvent->movementX;
my = mouseEvent->movementY;
}
/* rescale (in case canvas is being scaled)*/
double client_w, client_h;
emscripten_get_element_css_size(NULL, &client_w, &client_h);
mx = mx * (window_data->window->w / (client_w * window_data->pixel_ratio));
my = my * (window_data->window->h / (client_h * window_data->pixel_ratio));
SDL_SendMouseMotion(window_data->window, 0, pointerlock_status.isActive, mx, my);
return 0;
}
int
Emscripten_HandleMouseButton(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
{
SDL_WindowData *window_data = userData;
uint32_t sdl_button;
switch (mouseEvent->button) {
case 0:
sdl_button = SDL_BUTTON_LEFT;
break;
case 1:
sdl_button = SDL_BUTTON_MIDDLE;
break;
case 2:
sdl_button = SDL_BUTTON_RIGHT;
break;
default:
return 0;
}
SDL_SendMouseButton(window_data->window, 0, eventType == EMSCRIPTEN_EVENT_MOUSEDOWN ? SDL_PRESSED : SDL_RELEASED, sdl_button);
return 1;
}
int
Emscripten_HandleMouseFocus(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
{
SDL_WindowData *window_data = userData;
SDL_SendWindowEvent(window_data->window, eventType == EMSCRIPTEN_EVENT_MOUSEENTER ? SDL_WINDOWEVENT_ENTER : SDL_WINDOWEVENT_LEAVE, 0, 0);
return 1;
}
int
Emscripten_HandleWheel(int eventType, const EmscriptenWheelEvent *wheelEvent, void *userData)
{
SDL_WindowData *window_data = userData;
SDL_SendMouseWheel(window_data->window, 0, wheelEvent->deltaX, -wheelEvent->deltaY, SDL_MOUSEWHEEL_NORMAL);
return 1;
}
int
Emscripten_HandleFocus(int eventType, const EmscriptenFocusEvent *wheelEvent, void *userData)
{
SDL_WindowData *window_data = userData;
SDL_SendWindowEvent(window_data->window, eventType == EMSCRIPTEN_EVENT_FOCUS ? SDL_WINDOWEVENT_FOCUS_GAINED : SDL_WINDOWEVENT_FOCUS_LOST, 0, 0);
return 1;
}
int
Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData)
{
/*SDL_WindowData *window_data = userData;*/
int i;
SDL_TouchID deviceId = 0;
if (!SDL_GetTouch(deviceId)) {
if (SDL_AddTouch(deviceId, "") < 0) {
return 0;
}
}
for (i = 0; i < touchEvent->numTouches; i++) {
long x, y, id;
if (!touchEvent->touches[i].isChanged)
continue;
id = touchEvent->touches[i].identifier;
x = touchEvent->touches[i].canvasX;
y = touchEvent->touches[i].canvasY;
if (eventType == EMSCRIPTEN_EVENT_TOUCHMOVE) {
SDL_SendTouchMotion(deviceId, id, x, y, 1.0f);
} else if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) {
SDL_SendTouch(deviceId, id, SDL_TRUE, x, y, 1.0f);
} else {
SDL_SendTouch(deviceId, id, SDL_FALSE, x, y, 1.0f);
}
}
return 1;
}
int
Emscripten_HandleKey(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
{
Uint32 scancode;
/* .keyCode is deprecated, but still the most reliable way to get keys */
if (keyEvent->keyCode < SDL_arraysize(emscripten_scancode_table)) {
scancode = emscripten_scancode_table[keyEvent->keyCode];
if (scancode != SDL_SCANCODE_UNKNOWN) {
if (keyEvent->location == DOM_KEY_LOCATION_RIGHT) {
switch (scancode) {
case SDL_SCANCODE_LSHIFT:
scancode = SDL_SCANCODE_RSHIFT;
break;
case SDL_SCANCODE_LCTRL:
scancode = SDL_SCANCODE_RCTRL;
break;
case SDL_SCANCODE_LALT:
scancode = SDL_SCANCODE_RALT;
break;
case SDL_SCANCODE_LGUI:
scancode = SDL_SCANCODE_RGUI;
break;
}
}
SDL_SendKeyboardKey(eventType == EMSCRIPTEN_EVENT_KEYDOWN ?
SDL_PRESSED : SDL_RELEASED, scancode);
}
}
/* if we prevent keydown, we won't get keypress
* also we need to ALWAYS prevent backspace and tab otherwise chrome takes action and does bad navigation UX
*/
return SDL_GetEventState(SDL_TEXTINPUT) != SDL_ENABLE || eventType != EMSCRIPTEN_EVENT_KEYDOWN
|| keyEvent->keyCode == 8 /* backspace */ || keyEvent->keyCode == 9 /* tab */;
}
int
Emscripten_HandleKeyPress(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
{
char text[5];
Emscripten_ConvertUTF32toUTF8(keyEvent->charCode, text);
SDL_SendKeyboardText(text);
return 1;
}
int
Emscripten_HandleFullscreenChange(int eventType, const EmscriptenFullscreenChangeEvent *fullscreenChangeEvent, void *userData)
{
/*make sure this is actually our element going fullscreen*/
if(SDL_strcmp(fullscreenChangeEvent->id, "SDLFullscreenElement") != 0)
return 0;
SDL_WindowData *window_data = userData;
if(fullscreenChangeEvent->isFullscreen)
{
SDL_bool is_desktop_fullscreen;
window_data->window->flags |= window_data->requested_fullscreen_mode;
if(!window_data->requested_fullscreen_mode)
window_data->window->flags |= SDL_WINDOW_FULLSCREEN_DESKTOP; /*we didn't reqest fullscreen*/
window_data->requested_fullscreen_mode = 0;
is_desktop_fullscreen = (window_data->window->flags & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN_DESKTOP;
/*update size*/
if(window_data->window->flags & SDL_WINDOW_RESIZABLE || is_desktop_fullscreen)
{
emscripten_set_canvas_size(fullscreenChangeEvent->screenWidth, fullscreenChangeEvent->screenHeight);
SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, fullscreenChangeEvent->screenWidth, fullscreenChangeEvent->screenHeight);
}
else
{
/*preserve ratio*/
double w = window_data->window->w;
double h = window_data->window->h;
double factor = SDL_min(fullscreenChangeEvent->screenWidth / w, fullscreenChangeEvent->screenHeight / h);
emscripten_set_element_css_size(NULL, w * factor, h * factor);
}
}
else
{
EM_ASM({
//un-reparent canvas (similar to Module.requestFullscreen)
var canvas = Module['canvas'];
if(canvas.parentNode.id == "SDLFullscreenElement") {
var canvasContainer = canvas.parentNode;
canvasContainer.parentNode.insertBefore(canvas, canvasContainer);
canvasContainer.parentNode.removeChild(canvasContainer);
}
});
double unscaled_w = window_data->windowed_width / window_data->pixel_ratio;
double unscaled_h = window_data->windowed_height / window_data->pixel_ratio;
emscripten_set_canvas_size(window_data->windowed_width, window_data->windowed_height);
if (!window_data->external_size && window_data->pixel_ratio != 1.0f) {
emscripten_set_element_css_size(NULL, unscaled_w, unscaled_h);
}
SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, unscaled_w, unscaled_h);
window_data->window->flags &= ~FULLSCREEN_MASK;
}
return 0;
}
int
Emscripten_HandleResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
{
SDL_WindowData *window_data = userData;
if(window_data->window->flags & FULLSCREEN_MASK)
{
SDL_bool is_desktop_fullscreen = (window_data->window->flags & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN_DESKTOP;
if(window_data->window->flags & SDL_WINDOW_RESIZABLE || is_desktop_fullscreen)
{
emscripten_set_canvas_size(uiEvent->windowInnerWidth * window_data->pixel_ratio, uiEvent->windowInnerHeight * window_data->pixel_ratio);
SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, uiEvent->windowInnerWidth, uiEvent->windowInnerHeight);
}
}
else
{
/* this will only work if the canvas size is set through css */
if(window_data->window->flags & SDL_WINDOW_RESIZABLE)
{
double w = window_data->window->w;
double h = window_data->window->h;
if(window_data->external_size) {
emscripten_get_element_css_size(NULL, &w, &h);
}
emscripten_set_canvas_size(w * window_data->pixel_ratio, h * window_data->pixel_ratio);
/* set_canvas_size unsets this */
if (!window_data->external_size && window_data->pixel_ratio != 1.0f) {
emscripten_set_element_css_size(NULL, w, h);
}
SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, w, h);
}
}
return 0;
}
int
Emscripten_HandleVisibilityChange(int eventType, const EmscriptenVisibilityChangeEvent *visEvent, void *userData)
{
SDL_WindowData *window_data = userData;
SDL_SendWindowEvent(window_data->window, visEvent->hidden ? SDL_WINDOWEVENT_HIDDEN : SDL_WINDOWEVENT_SHOWN, 0, 0);
return 0;
}
void
Emscripten_RegisterEventHandlers(SDL_WindowData *data)
{
/* There is only one window and that window is the canvas */
emscripten_set_mousemove_callback("#canvas", data, 0, Emscripten_HandleMouseMove);
emscripten_set_mousedown_callback("#canvas", data, 0, Emscripten_HandleMouseButton);
emscripten_set_mouseup_callback("#canvas", data, 0, Emscripten_HandleMouseButton);
emscripten_set_mouseenter_callback("#canvas", data, 0, Emscripten_HandleMouseFocus);
emscripten_set_mouseleave_callback("#canvas", data, 0, Emscripten_HandleMouseFocus);
emscripten_set_wheel_callback("#canvas", data, 0, Emscripten_HandleWheel);
emscripten_set_focus_callback("#canvas", data, 0, Emscripten_HandleFocus);
emscripten_set_blur_callback("#canvas", data, 0, Emscripten_HandleFocus);
emscripten_set_touchstart_callback("#canvas", data, 0, Emscripten_HandleTouch);
emscripten_set_touchend_callback("#canvas", data, 0, Emscripten_HandleTouch);
emscripten_set_touchmove_callback("#canvas", data, 0, Emscripten_HandleTouch);
emscripten_set_touchcancel_callback("#canvas", data, 0, Emscripten_HandleTouch);
/* Keyboard events are awkward */
const char *keyElement = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT);
if (!keyElement) keyElement = "#window";
emscripten_set_keydown_callback(keyElement, data, 0, Emscripten_HandleKey);
emscripten_set_keyup_callback(keyElement, data, 0, Emscripten_HandleKey);
emscripten_set_keypress_callback(keyElement, data, 0, Emscripten_HandleKeyPress);
emscripten_set_fullscreenchange_callback("#document", data, 0, Emscripten_HandleFullscreenChange);
emscripten_set_resize_callback("#window", data, 0, Emscripten_HandleResize);
emscripten_set_visibilitychange_callback(data, 0, Emscripten_HandleVisibilityChange);
}
void
Emscripten_UnregisterEventHandlers(SDL_WindowData *data)
{
/* only works due to having one window */
emscripten_set_mousemove_callback("#canvas", NULL, 0, NULL);
emscripten_set_mousedown_callback("#canvas", NULL, 0, NULL);
emscripten_set_mouseup_callback("#canvas", NULL, 0, NULL);
emscripten_set_mouseenter_callback("#canvas", NULL, 0, NULL);
emscripten_set_mouseleave_callback("#canvas", NULL, 0, NULL);
emscripten_set_wheel_callback("#canvas", NULL, 0, NULL);
emscripten_set_focus_callback("#canvas", NULL, 0, NULL);
emscripten_set_blur_callback("#canvas", NULL, 0, NULL);
emscripten_set_touchstart_callback("#canvas", NULL, 0, NULL);
emscripten_set_touchend_callback("#canvas", NULL, 0, NULL);
emscripten_set_touchmove_callback("#canvas", NULL, 0, NULL);
emscripten_set_touchcancel_callback("#canvas", NULL, 0, NULL);
emscripten_set_keydown_callback("#window", NULL, 0, NULL);
emscripten_set_keyup_callback("#window", NULL, 0, NULL);
emscripten_set_keypress_callback("#window", NULL, 0, NULL);
emscripten_set_fullscreenchange_callback("#document", NULL, 0, NULL);
emscripten_set_resize_callback("#window", NULL, 0, NULL);
emscripten_set_visibilitychange_callback(NULL, 0, NULL);
}
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
/* vi: set ts=4 sw=4 expandtab: */

36
src/video/emscripten/SDL_emscriptenevents.h Normal file
View File

@@ -0,0 +1,36 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef _SDL_emscriptenevents_h
#define _SDL_emscriptenevents_h
#include "SDL_emscriptenvideo.h"
extern void
Emscripten_RegisterEventHandlers(SDL_WindowData *data);
extern void
Emscripten_UnregisterEventHandlers(SDL_WindowData *data);
#endif /* _SDL_emscriptenevents_h */
/* vi: set ts=4 sw=4 expandtab: */

136
src/video/emscripten/SDL_emscriptenframebuffer.c Normal file
View File

@@ -0,0 +1,136 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
#include "SDL_emscriptenvideo.h"
#include "SDL_emscriptenframebuffer.h"
int Emscripten_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
{
SDL_Surface *surface;
const Uint32 surface_format = SDL_PIXELFORMAT_BGR888;
int w, h;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
/* Free the old framebuffer surface */
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
surface = data->surface;
SDL_FreeSurface(surface);
/* Create a new one */
SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
SDL_GetWindowSize(window, &w, &h);
surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
if (!surface) {
return -1;
}
/* Save the info and return! */
data->surface = surface;
*format = surface_format;
*pixels = surface->pixels;
*pitch = surface->pitch;
return 0;
}
int Emscripten_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects)
{
static int frame_number;
SDL_Surface *surface;
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
surface = data->surface;
if (!surface) {
return SDL_SetError("Couldn't find dummy surface for window");
}
/* Send the data to the display */
EM_ASM_INT({
//TODO: don't create context every update
var ctx = Module['canvas'].getContext('2d');
//library_sdl.js SDL_UnlockSurface
var image = ctx.createImageData($0, $1);
var data = image.data;
var src = $2 >> 2;
var dst = 0;
var isScreen = true;
var num;
if (typeof CanvasPixelArray !== 'undefined' && data instanceof CanvasPixelArray) {
// IE10/IE11: ImageData objects are backed by the deprecated CanvasPixelArray,
// not UInt8ClampedArray. These don't have buffers, so we need to revert
// to copying a byte at a time. We do the undefined check because modern
// browsers do not define CanvasPixelArray anymore.
num = data.length;
while (dst < num) {
var val = HEAP32[src]; // This is optimized. Instead, we could do {{{ makeGetValue('buffer', 'dst', 'i32') }}};
data[dst ] = val & 0xff;
data[dst+1] = (val >> 8) & 0xff;
data[dst+2] = (val >> 16) & 0xff;
data[dst+3] = isScreen ? 0xff : ((val >> 24) & 0xff);
src++;
dst += 4;
}
} else {
var data32 = new Uint32Array(data.buffer);
num = data32.length;
if (isScreen) {
while (dst < num) {
// HEAP32[src++] is an optimization. Instead, we could do {{{ makeGetValue('buffer', 'dst', 'i32') }}};
data32[dst++] = HEAP32[src++] | 0xff000000;
}
} else {
while (dst < num) {
data32[dst++] = HEAP32[src++];
}
}
}
ctx.putImageData(image, 0, 0);
return 0;
}, surface->w, surface->h, surface->pixels);
/*if (SDL_getenv("SDL_VIDEO_Emscripten_SAVE_FRAMES")) {
char file[128];
SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
SDL_GetWindowID(window), ++frame_number);
SDL_SaveBMP(surface, file);
}*/
return 0;
}
void Emscripten_DestroyWindowFramebuffer(_THIS, SDL_Window * window)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
SDL_FreeSurface(data->surface);
data->surface = NULL;
}
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifndef _SDL_emscriptenframebuffer_h
#define _SDL_emscriptenframebuffer_h
extern int Emscripten_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch);
extern int Emscripten_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects);
extern void Emscripten_DestroyWindowFramebuffer(_THIS, SDL_Window * window);
#endif /* _SDL_emsctiptenframebuffer_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
#include <emscripten/emscripten.h>
#include <emscripten/html5.h>
#include "SDL_emscriptenmouse.h"
#include "../../events/SDL_mouse_c.h"
#include "SDL_assert.h"
static SDL_Cursor*
Emscripten_CreateDefaultCursor()
{
SDL_Cursor* cursor;
Emscripten_CursorData *curdata;
cursor = SDL_calloc(1, sizeof(SDL_Cursor));
if (cursor) {
curdata = (Emscripten_CursorData *) SDL_calloc(1, sizeof(*curdata));
curdata->system_cursor = "default";
cursor->driverdata = curdata;
}
else {
SDL_OutOfMemory();
}
return cursor;
}
static SDL_Cursor*
Emscripten_CreateCursor(SDL_Surface* sruface, int hot_x, int hot_y)
{
return Emscripten_CreateDefaultCursor();
}
static SDL_Cursor*
Emscripten_CreateSystemCursor(SDL_SystemCursor id)
{
SDL_Cursor *cursor;
Emscripten_CursorData *curdata;
const char *cursor_name = NULL;
switch(id) {
case SDL_SYSTEM_CURSOR_ARROW:
cursor_name = "default";
break;
case SDL_SYSTEM_CURSOR_IBEAM:
cursor_name = "text";
break;
case SDL_SYSTEM_CURSOR_WAIT:
cursor_name = "wait";
break;
case SDL_SYSTEM_CURSOR_CROSSHAIR:
cursor_name = "crosshair";
break;
case SDL_SYSTEM_CURSOR_WAITARROW:
cursor_name = "progress";
break;
case SDL_SYSTEM_CURSOR_SIZENWSE:
cursor_name = "nwse-resize";
break;
case SDL_SYSTEM_CURSOR_SIZENESW:
cursor_name = "nesw-resize";
break;
case SDL_SYSTEM_CURSOR_SIZEWE:
cursor_name = "ew-resize";
break;
case SDL_SYSTEM_CURSOR_SIZENS:
cursor_name = "ns-resize";
break;
case SDL_SYSTEM_CURSOR_SIZEALL:
break;
case SDL_SYSTEM_CURSOR_NO:
cursor_name = "not-allowed";
break;
case SDL_SYSTEM_CURSOR_HAND:
cursor_name = "pointer";
break;
default:
SDL_assert(0);
return NULL;
}
cursor = (SDL_Cursor *) SDL_calloc(1, sizeof(*cursor));
curdata = (Emscripten_CursorData *) SDL_calloc(1, sizeof(*curdata));
curdata->system_cursor = cursor_name;
cursor->driverdata = curdata;
return cursor;
}
static void
Emscripten_FreeCursor(SDL_Cursor* cursor)
{
Emscripten_CursorData *curdata;
if (cursor) {
curdata = (Emscripten_CursorData *) cursor->driverdata;
if (curdata != NULL) {
SDL_free(cursor->driverdata);
}
SDL_free(cursor);
}
}
static int
Emscripten_ShowCursor(SDL_Cursor* cursor)
{
Emscripten_CursorData *curdata;
if (SDL_GetMouseFocus() != NULL) {
if(cursor && cursor->driverdata) {
curdata = (Emscripten_CursorData *) cursor->driverdata;
if(curdata->system_cursor) {
EM_ASM_INT({
if (Module['canvas']) {
Module['canvas'].style['cursor'] = Module['Pointer_stringify']($0);
}
return 0;
}, curdata->system_cursor);
}
}
else {
EM_ASM(
if (Module['canvas']) {
Module['canvas'].style['cursor'] = 'none';
}
);
}
}
return 0;
}
static void
Emscripten_WarpMouse(SDL_Window* window, int x, int y)
{
SDL_Unsupported();
}
static int
Emscripten_SetRelativeMouseMode(SDL_bool enabled)
{
/* TODO: pointer lock isn't actually enabled yet */
if(enabled) {
if(emscripten_request_pointerlock(NULL, 1) >= EMSCRIPTEN_RESULT_SUCCESS) {
return 0;
}
} else {
if(emscripten_exit_pointerlock() >= EMSCRIPTEN_RESULT_SUCCESS) {
return 0;
}
}
return -1;
}
void
Emscripten_InitMouse()
{
SDL_Mouse* mouse = SDL_GetMouse();
mouse->CreateCursor = Emscripten_CreateCursor;
mouse->ShowCursor = Emscripten_ShowCursor;
mouse->FreeCursor = Emscripten_FreeCursor;
mouse->WarpMouse = Emscripten_WarpMouse;
mouse->CreateSystemCursor = Emscripten_CreateSystemCursor;
mouse->SetRelativeMouseMode = Emscripten_SetRelativeMouseMode;
SDL_SetDefaultCursor(Emscripten_CreateDefaultCursor());
}
void
Emscripten_FiniMouse()
{
SDL_Mouse* mouse = SDL_GetMouse();
Emscripten_FreeCursor(mouse->def_cursor);
mouse->def_cursor = NULL;
mouse->CreateCursor = NULL;
mouse->ShowCursor = NULL;
mouse->FreeCursor = NULL;
mouse->WarpMouse = NULL;
mouse->CreateSystemCursor = NULL;
mouse->SetRelativeMouseMode = NULL;
}
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef _SDL_emscriptenmouse_h
#define _SDL_emscriptenmouse_h
typedef struct _Emscripten_CursorData
{
const char *system_cursor;
} Emscripten_CursorData;
extern void
Emscripten_InitMouse();
extern void
Emscripten_FiniMouse();
#endif /* _SDL_emscriptenmouse_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL
#include <emscripten/emscripten.h>
#include <GLES2/gl2.h>
#include "SDL_emscriptenvideo.h"
#include "SDL_emscriptenopengles.h"
#define LOAD_FUNC(NAME) _this->egl_data->NAME = NAME;
/* EGL implementation of SDL OpenGL support */
int
Emscripten_GLES_LoadLibrary(_THIS, const char *path) {
/*we can't load EGL dynamically*/
_this->egl_data = (struct SDL_EGL_VideoData *) SDL_calloc(1, sizeof(SDL_EGL_VideoData));
if (!_this->egl_data) {
return SDL_OutOfMemory();
}
LOAD_FUNC(eglGetDisplay);
LOAD_FUNC(eglInitialize);
LOAD_FUNC(eglTerminate);
LOAD_FUNC(eglGetProcAddress);
LOAD_FUNC(eglChooseConfig);
LOAD_FUNC(eglGetConfigAttrib);
LOAD_FUNC(eglCreateContext);
LOAD_FUNC(eglDestroyContext);
LOAD_FUNC(eglCreateWindowSurface);
LOAD_FUNC(eglDestroySurface);
LOAD_FUNC(eglMakeCurrent);
LOAD_FUNC(eglSwapBuffers);
LOAD_FUNC(eglSwapInterval);
LOAD_FUNC(eglWaitNative);
LOAD_FUNC(eglWaitGL);
LOAD_FUNC(eglBindAPI);
_this->egl_data->egl_display = _this->egl_data->eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (!_this->egl_data->egl_display) {
return SDL_SetError("Could not get EGL display");
}
if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
return SDL_SetError("Could not initialize EGL");
}
_this->gl_config.driver_loaded = 1;
if (path) {
SDL_strlcpy(_this->gl_config.driver_path, path, sizeof(_this->gl_config.driver_path) - 1);
} else {
*_this->gl_config.driver_path = '\0';
}
return 0;
}
void
Emscripten_GLES_DeleteContext(_THIS, SDL_GLContext context)
{
/*
WebGL contexts can't actually be deleted, so we need to reset it.
ES2 renderer resets state on init anyway, clearing the canvas should be enough
*/
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
SDL_EGL_DeleteContext(_this, context);
}
SDL_EGL_CreateContext_impl(Emscripten)
SDL_EGL_SwapWindow_impl(Emscripten)
SDL_EGL_MakeCurrent_impl(Emscripten)
void
Emscripten_GLES_GetDrawableSize(_THIS, SDL_Window * window, int * w, int * h)
{
SDL_WindowData *data;
if (window->driverdata) {
data = (SDL_WindowData *) window->driverdata;
if (w) {
*w = window->w * data->pixel_ratio;
}
if (h) {
*h = window->h * data->pixel_ratio;
}
}
}
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifndef _SDL_emscriptenopengles_h
#define _SDL_emscriptenopengles_h
#if SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL
#include "../SDL_sysvideo.h"
#include "../SDL_egl_c.h"
/* OpenGLES functions */
#define Emscripten_GLES_GetAttribute SDL_EGL_GetAttribute
#define Emscripten_GLES_GetProcAddress SDL_EGL_GetProcAddress
#define Emscripten_GLES_UnloadLibrary SDL_EGL_UnloadLibrary
#define Emscripten_GLES_SetSwapInterval SDL_EGL_SetSwapInterval
#define Emscripten_GLES_GetSwapInterval SDL_EGL_GetSwapInterval
extern int Emscripten_GLES_LoadLibrary(_THIS, const char *path);
extern void Emscripten_GLES_DeleteContext(_THIS, SDL_GLContext context);
extern SDL_GLContext Emscripten_GLES_CreateContext(_THIS, SDL_Window * window);
extern void Emscripten_GLES_SwapWindow(_THIS, SDL_Window * window);
extern int Emscripten_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context);
extern void Emscripten_GLES_GetDrawableSize(_THIS, SDL_Window * window, int * w, int * h);
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL */
#endif /* _SDL_emscriptenopengles_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
#include "SDL_video.h"
#include "SDL_mouse.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../SDL_egl_c.h"
#include "../../events/SDL_events_c.h"
#include "SDL_emscriptenvideo.h"
#include "SDL_emscriptenopengles.h"
#include "SDL_emscriptenframebuffer.h"
#include "SDL_emscriptenevents.h"
#include "SDL_emscriptenmouse.h"
#define EMSCRIPTENVID_DRIVER_NAME "emscripten"
/* Initialization/Query functions */
static int Emscripten_VideoInit(_THIS);
static int Emscripten_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode);
static void Emscripten_VideoQuit(_THIS);
static int Emscripten_CreateWindow(_THIS, SDL_Window * window);
static void Emscripten_SetWindowSize(_THIS, SDL_Window * window);
static void Emscripten_DestroyWindow(_THIS, SDL_Window * window);
static void Emscripten_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen);
static void Emscripten_PumpEvents(_THIS);
/* Emscripten driver bootstrap functions */
static int
Emscripten_Available(void)
{
return (1);
}
static void
Emscripten_DeleteDevice(SDL_VideoDevice * device)
{
SDL_free(device);
}
static SDL_VideoDevice *
Emscripten_CreateDevice(int devindex)
{
SDL_VideoDevice *device;
/* Initialize all variables that we clean on shutdown */
device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
if (!device) {
SDL_OutOfMemory();
SDL_free(device);
return (0);
}
/* Set the function pointers */
device->VideoInit = Emscripten_VideoInit;
device->VideoQuit = Emscripten_VideoQuit;
device->SetDisplayMode = Emscripten_SetDisplayMode;
device->PumpEvents = Emscripten_PumpEvents;
device->CreateWindow = Emscripten_CreateWindow;
/*device->CreateWindowFrom = Emscripten_CreateWindowFrom;
device->SetWindowTitle = Emscripten_SetWindowTitle;
device->SetWindowIcon = Emscripten_SetWindowIcon;
device->SetWindowPosition = Emscripten_SetWindowPosition;*/
device->SetWindowSize = Emscripten_SetWindowSize;
/*device->ShowWindow = Emscripten_ShowWindow;
device->HideWindow = Emscripten_HideWindow;
device->RaiseWindow = Emscripten_RaiseWindow;
device->MaximizeWindow = Emscripten_MaximizeWindow;
device->MinimizeWindow = Emscripten_MinimizeWindow;
device->RestoreWindow = Emscripten_RestoreWindow;
device->SetWindowGrab = Emscripten_SetWindowGrab;*/
device->DestroyWindow = Emscripten_DestroyWindow;
device->SetWindowFullscreen = Emscripten_SetWindowFullscreen;
device->CreateWindowFramebuffer = Emscripten_CreateWindowFramebuffer;
device->UpdateWindowFramebuffer = Emscripten_UpdateWindowFramebuffer;
device->DestroyWindowFramebuffer = Emscripten_DestroyWindowFramebuffer;
device->GL_LoadLibrary = Emscripten_GLES_LoadLibrary;
device->GL_GetProcAddress = Emscripten_GLES_GetProcAddress;
device->GL_UnloadLibrary = Emscripten_GLES_UnloadLibrary;
device->GL_CreateContext = Emscripten_GLES_CreateContext;
device->GL_MakeCurrent = Emscripten_GLES_MakeCurrent;
device->GL_SetSwapInterval = Emscripten_GLES_SetSwapInterval;
device->GL_GetSwapInterval = Emscripten_GLES_GetSwapInterval;
device->GL_SwapWindow = Emscripten_GLES_SwapWindow;
device->GL_DeleteContext = Emscripten_GLES_DeleteContext;
device->GL_GetDrawableSize = Emscripten_GLES_GetDrawableSize;
device->free = Emscripten_DeleteDevice;
return device;
}
VideoBootStrap Emscripten_bootstrap = {
EMSCRIPTENVID_DRIVER_NAME, "SDL emscripten video driver",
Emscripten_Available, Emscripten_CreateDevice
};
int
Emscripten_VideoInit(_THIS)
{
SDL_DisplayMode mode;
double css_w, css_h;
/* Use a fake 32-bpp desktop mode */
mode.format = SDL_PIXELFORMAT_RGB888;
emscripten_get_element_css_size(NULL, &css_w, &css_h);
mode.w = css_w;
mode.h = css_h;
mode.refresh_rate = 0;
mode.driverdata = NULL;
if (SDL_AddBasicVideoDisplay(&mode) < 0) {
return -1;
}
SDL_zero(mode);
SDL_AddDisplayMode(&_this->displays[0], &mode);
Emscripten_InitMouse();
/* We're done! */
return 0;
}
static int
Emscripten_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
{
/* can't do this */
return 0;
}
static void
Emscripten_VideoQuit(_THIS)
{
Emscripten_FiniMouse();
}
static void
Emscripten_PumpEvents(_THIS)
{
/* do nothing. */
}
static int
Emscripten_CreateWindow(_THIS, SDL_Window * window)
{
SDL_WindowData *wdata;
double scaled_w, scaled_h;
double css_w, css_h;
/* Allocate window internal data */
wdata = (SDL_WindowData *) SDL_calloc(1, sizeof(SDL_WindowData));
if (wdata == NULL) {
return SDL_OutOfMemory();
}
if (window->flags & SDL_WINDOW_ALLOW_HIGHDPI) {
wdata->pixel_ratio = emscripten_get_device_pixel_ratio();
} else {
wdata->pixel_ratio = 1.0f;
}
scaled_w = SDL_floor(window->w * wdata->pixel_ratio);
scaled_h = SDL_floor(window->h * wdata->pixel_ratio);
emscripten_set_canvas_size(scaled_w, scaled_h);
emscripten_get_element_css_size(NULL, &css_w, &css_h);
wdata->external_size = css_w != scaled_w || css_h != scaled_h;
if ((window->flags & SDL_WINDOW_RESIZABLE) && wdata->external_size) {
/* external css has resized us */
scaled_w = css_w * wdata->pixel_ratio;
scaled_h = css_h * wdata->pixel_ratio;
emscripten_set_canvas_size(scaled_w, scaled_h);
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, css_w, css_h);
}
/* if the size is not being controlled by css, we need to scale down for hidpi */
if (!wdata->external_size) {
if (wdata->pixel_ratio != 1.0f) {
/*scale canvas down*/
emscripten_set_element_css_size(NULL, window->w, window->h);
}
}
wdata->windowed_width = scaled_w;
wdata->windowed_height = scaled_h;
if (window->flags & SDL_WINDOW_OPENGL) {
if (!_this->egl_data) {
if (SDL_GL_LoadLibrary(NULL) < 0) {
return -1;
}
}
wdata->egl_surface = SDL_EGL_CreateSurface(_this, NULL);
if (wdata->egl_surface == EGL_NO_SURFACE) {
return SDL_SetError("Could not create GLES window surface");
}
}
wdata->window = window;
/* Setup driver data for this window */
window->driverdata = wdata;
/* One window, it always has focus */
SDL_SetMouseFocus(window);
SDL_SetKeyboardFocus(window);
Emscripten_RegisterEventHandlers(wdata);
/* Window has been successfully created */
return 0;
}
static void Emscripten_SetWindowSize(_THIS, SDL_Window * window)
{
SDL_WindowData *data;
if (window->driverdata) {
data = (SDL_WindowData *) window->driverdata;
emscripten_set_canvas_size(window->w * data->pixel_ratio, window->h * data->pixel_ratio);
/*scale canvas down*/
if (!data->external_size && data->pixel_ratio != 1.0f) {
emscripten_set_element_css_size(NULL, window->w, window->h);
}
}
}
static void
Emscripten_DestroyWindow(_THIS, SDL_Window * window)
{
SDL_WindowData *data;
if(window->driverdata) {
data = (SDL_WindowData *) window->driverdata;
Emscripten_UnregisterEventHandlers(data);
if (data->egl_surface != EGL_NO_SURFACE) {
SDL_EGL_DestroySurface(_this, data->egl_surface);
data->egl_surface = EGL_NO_SURFACE;
}
SDL_free(window->driverdata);
window->driverdata = NULL;
}
}
static void
Emscripten_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen)
{
SDL_WindowData *data;
if(window->driverdata) {
data = (SDL_WindowData *) window->driverdata;
if(fullscreen) {
data->requested_fullscreen_mode = window->flags & (SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN);
/*unset the fullscreen flags as we're not actually fullscreen yet*/
window->flags &= ~(SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN);
EM_ASM({
//reparent canvas (similar to Module.requestFullscreen)
var canvas = Module['canvas'];
if(canvas.parentNode.id != "SDLFullscreenElement") {
var canvasContainer = document.createElement("div");
canvasContainer.id = "SDLFullscreenElement";
canvas.parentNode.insertBefore(canvasContainer, canvas);
canvasContainer.appendChild(canvas);
}
});
int is_fullscreen;
emscripten_get_canvas_size(&data->windowed_width, &data->windowed_height, &is_fullscreen);
emscripten_request_fullscreen("SDLFullscreenElement", 1);
}
else
emscripten_exit_fullscreen();
}
}
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifndef _SDL_emscriptenvideo_h
#define _SDL_emscriptenvideo_h
#include "../SDL_sysvideo.h"
#include <emscripten/emscripten.h>
#include <emscripten/html5.h>
#include <EGL/egl.h>
typedef struct SDL_WindowData
{
#if SDL_VIDEO_OPENGL_EGL
EGLSurface egl_surface;
#endif
SDL_Window *window;
SDL_Surface *surface;
int windowed_width;
int windowed_height;
float pixel_ratio;
SDL_bool external_size;
int requested_fullscreen_mode;
} SDL_WindowData;
#endif /* _SDL_emscriptenvideo_h */
/* vi: set ts=4 sw=4 expandtab: */