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SDL/src/video/emscripten/SDL_emscriptenevents.c

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Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
/*
Simple DirectMedia Layer
Updated copyright to 2016
2016-01-02 18:10:34 +00:00
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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 )
/*
.keyCode to scancode
https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent
https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode
*/
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;
}
EM_BOOL
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;
}
EM_BOOL
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;
}
EM_BOOL
Emscripten_HandleMouseFocus(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
{
SDL_WindowData *window_data = userData;
use SDL_SetMouseFocus
2016-09-13 07:03:36 +00:00
SDL_SetMouseFocus(eventType == EMSCRIPTEN_EVENT_MOUSEENTER ? window_data->window : NULL);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
return 1;
}
EM_BOOL
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;
}
EM_BOOL
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;
}
EM_BOOL
Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData)
{
SDL_WindowData *window_data = userData;
int i;
use css size for touch normalisation
2016-09-13 06:58:08 +00:00
double client_w, client_h;
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
SDL_TouchID deviceId = 1;
if (SDL_AddTouch(deviceId, "") < 0) {
return 0;
}
use css size for touch normalisation
2016-09-13 06:58:08 +00:00
emscripten_get_element_css_size(NULL, &client_w, &client_h);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
for (i = 0; i < touchEvent->numTouches; i++) {
SDL_FingerID id;
float x, y;
if (!touchEvent->touches[i].isChanged)
continue;
id = touchEvent->touches[i].identifier;
use css size for touch normalisation
2016-09-13 06:58:08 +00:00
x = touchEvent->touches[i].canvasX / client_w;
y = touchEvent->touches[i].canvasY / client_h;
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
emscripten: send fake mouse events for touches, like other targets do. (This really should be handled at the higher level and not in the individual targets, but this fixes the immediate bug.)
2016-08-12 23:59:00 +00:00
if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) {
if (!window_data->finger_touching) {
window_data->finger_touching = SDL_TRUE;
window_data->first_finger = id;
SDL_SendMouseMotion(window_data->window, SDL_TOUCH_MOUSEID, 0, x, y);
SDL_SendMouseButton(window_data->window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
}
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
SDL_SendTouch(deviceId, id, SDL_TRUE, x, y, 1.0f);
emscripten: send fake mouse events for touches, like other targets do. (This really should be handled at the higher level and not in the individual targets, but this fixes the immediate bug.)
2016-08-12 23:59:00 +00:00
} else if (eventType == EMSCRIPTEN_EVENT_TOUCHMOVE) {
if ((window_data->finger_touching) && (window_data->first_finger == id)) {
SDL_SendMouseMotion(window_data->window, SDL_TOUCH_MOUSEID, 0, x, y);
}
SDL_SendTouchMotion(deviceId, id, x, y, 1.0f);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
} else {
emscripten: send fake mouse events for touches, like other targets do. (This really should be handled at the higher level and not in the individual targets, but this fixes the immediate bug.)
2016-08-12 23:59:00 +00:00
if ((window_data->finger_touching) && (window_data->first_finger == id)) {
SDL_SendMouseButton(window_data->window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
window_data->finger_touching = SDL_FALSE;
}
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
SDL_SendTouch(deviceId, id, SDL_FALSE, x, y, 1.0f);
}
}
return 1;
}
EM_BOOL
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 */;
}
EM_BOOL
Emscripten_HandleKeyPress(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
{
char text[5];
if (Emscripten_ConvertUTF32toUTF8(keyEvent->charCode, text)) {
SDL_SendKeyboardText(text);
}
return 1;
}
EM_BOOL
Emscripten_HandleFullscreenChange(int eventType, const EmscriptenFullscreenChangeEvent *fullscreenChangeEvent, void *userData)
{
SDL_WindowData *window_data = userData;
if(fullscreenChangeEvent->isFullscreen)
{
SDL_bool is_desktop_fullscreen;
window_data->window->flags |= window_data->requested_fullscreen_mode;
window_data->requested_fullscreen_mode = 0;
simplify fullscreen handling using new fullscreen_strategy api, patch contributed by Charlie Birks
2016-09-13 07:03:28 +00:00
if(!window_data->requested_fullscreen_mode)
window_data->window->flags |= SDL_WINDOW_FULLSCREEN; /*we didn't reqest fullscreen*/
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
}
else
{
window_data->window->flags &= ~FULLSCREEN_MASK;
}
return 0;
}
EM_BOOL
Emscripten_HandleResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
{
SDL_WindowData *window_data = userData;
simplify fullscreen handling using new fullscreen_strategy api, patch contributed by Charlie Birks
2016-09-13 07:03:28 +00:00
if(!(window_data->window->flags & FULLSCREEN_MASK))
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
{
/* 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;
}
simplify fullscreen handling using new fullscreen_strategy api, patch contributed by Charlie Birks
2016-09-13 07:03:28 +00:00
EM_BOOL
Emscripten_HandleCanvasResize(int eventType, const void *reserved, void *userData)
{
/*this is used during fullscreen changes*/
SDL_WindowData *window_data = userData;
if(window_data->fullscreen_resize)
{
double css_w, css_h;
emscripten_get_element_css_size(NULL, &css_w, &css_h);
SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, css_w, css_h);
}
return 0;
}
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
EM_BOOL
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);
listen for mouse up on document (fixes mouseup outside canvas)
2016-09-13 07:03:37 +00:00
emscripten_set_mouseup_callback("#document", data, 0, Emscripten_HandleMouseButton);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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);
listen for mouse up on document (fixes mouseup outside canvas)
2016-09-13 07:03:37 +00:00
emscripten_set_mouseup_callback("#document", NULL, 0, NULL);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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);
const char *target = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT);
if (!target) {
target = "#window";
}
emscripten_set_keydown_callback(target, NULL, 0, NULL);
emscripten_set_keyup_callback(target, NULL, 0, NULL);
emscripten_set_keypress_callback(target, 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: */