Initial merge of Emscripten port!
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 Jylänki, Alon Zakai, Edward Rudd, Bruce Mitchener, and Martin Gerhardy. (Thanks, everyone!) --HG-- extra : rebase_source : 97af74c8a5121e926ebe89f123536b5dd6681695
This commit is contained in:
Ryan C. Gordon
parent
c2ebb6b09f
commit
de88474dda
61 changed files with 4047 additions and 600 deletions
218
src/video/emscripten/SDL_emscriptenmouse.c
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218
src/video/emscripten/SDL_emscriptenmouse.c
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_EMSCRIPTEN
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#include <emscripten/emscripten.h>
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#include <emscripten/html5.h>
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#include "SDL_emscriptenmouse.h"
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#include "../../events/SDL_mouse_c.h"
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#include "SDL_assert.h"
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static SDL_Cursor*
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Emscripten_CreateDefaultCursor()
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{
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SDL_Cursor* cursor;
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Emscripten_CursorData *curdata;
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cursor = SDL_calloc(1, sizeof(SDL_Cursor));
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if (cursor) {
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curdata = (Emscripten_CursorData *) SDL_calloc(1, sizeof(*curdata));
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curdata->system_cursor = "default";
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cursor->driverdata = curdata;
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}
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else {
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SDL_OutOfMemory();
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}
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return cursor;
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}
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static SDL_Cursor*
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Emscripten_CreateCursor(SDL_Surface* sruface, int hot_x, int hot_y)
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{
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return Emscripten_CreateDefaultCursor();
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}
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static SDL_Cursor*
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Emscripten_CreateSystemCursor(SDL_SystemCursor id)
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{
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SDL_Cursor *cursor;
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Emscripten_CursorData *curdata;
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const char *cursor_name = NULL;
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switch(id) {
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case SDL_SYSTEM_CURSOR_ARROW:
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cursor_name = "default";
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break;
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case SDL_SYSTEM_CURSOR_IBEAM:
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cursor_name = "text";
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break;
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case SDL_SYSTEM_CURSOR_WAIT:
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cursor_name = "wait";
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break;
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case SDL_SYSTEM_CURSOR_CROSSHAIR:
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cursor_name = "crosshair";
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break;
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case SDL_SYSTEM_CURSOR_WAITARROW:
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cursor_name = "progress";
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break;
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case SDL_SYSTEM_CURSOR_SIZENWSE:
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cursor_name = "nwse-resize";
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break;
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case SDL_SYSTEM_CURSOR_SIZENESW:
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cursor_name = "nesw-resize";
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break;
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case SDL_SYSTEM_CURSOR_SIZEWE:
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cursor_name = "ew-resize";
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break;
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case SDL_SYSTEM_CURSOR_SIZENS:
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cursor_name = "ns-resize";
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break;
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case SDL_SYSTEM_CURSOR_SIZEALL:
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break;
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case SDL_SYSTEM_CURSOR_NO:
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cursor_name = "not-allowed";
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break;
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case SDL_SYSTEM_CURSOR_HAND:
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cursor_name = "pointer";
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break;
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default:
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SDL_assert(0);
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return NULL;
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}
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cursor = (SDL_Cursor *) SDL_calloc(1, sizeof(*cursor));
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curdata = (Emscripten_CursorData *) SDL_calloc(1, sizeof(*curdata));
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curdata->system_cursor = cursor_name;
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cursor->driverdata = curdata;
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return cursor;
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}
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static void
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Emscripten_FreeCursor(SDL_Cursor* cursor)
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{
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Emscripten_CursorData *curdata;
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if (cursor) {
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curdata = (Emscripten_CursorData *) cursor->driverdata;
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if (curdata != NULL) {
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SDL_free(cursor->driverdata);
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}
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SDL_free(cursor);
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}
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}
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static int
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Emscripten_ShowCursor(SDL_Cursor* cursor)
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{
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Emscripten_CursorData *curdata;
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if (SDL_GetMouseFocus() != NULL) {
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if(cursor && cursor->driverdata) {
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curdata = (Emscripten_CursorData *) cursor->driverdata;
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if(curdata->system_cursor) {
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EM_ASM_INT({
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if (Module['canvas']) {
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Module['canvas'].style['cursor'] = Module['Pointer_stringify']($0);
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}
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return 0;
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}, curdata->system_cursor);
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}
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}
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else {
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EM_ASM(
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if (Module['canvas']) {
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Module['canvas'].style['cursor'] = 'none';
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}
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);
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}
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}
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return 0;
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}
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static void
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Emscripten_WarpMouse(SDL_Window* window, int x, int y)
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{
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SDL_Unsupported();
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}
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static int
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Emscripten_SetRelativeMouseMode(SDL_bool enabled)
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{
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/* TODO: pointer lock isn't actually enabled yet */
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if(enabled) {
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if(emscripten_request_pointerlock(NULL, 1) >= EMSCRIPTEN_RESULT_SUCCESS) {
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return 0;
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}
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} else {
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if(emscripten_exit_pointerlock() >= EMSCRIPTEN_RESULT_SUCCESS) {
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return 0;
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}
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}
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return -1;
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}
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void
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Emscripten_InitMouse()
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{
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SDL_Mouse* mouse = SDL_GetMouse();
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mouse->CreateCursor = Emscripten_CreateCursor;
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mouse->ShowCursor = Emscripten_ShowCursor;
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mouse->FreeCursor = Emscripten_FreeCursor;
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mouse->WarpMouse = Emscripten_WarpMouse;
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mouse->CreateSystemCursor = Emscripten_CreateSystemCursor;
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mouse->SetRelativeMouseMode = Emscripten_SetRelativeMouseMode;
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SDL_SetDefaultCursor(Emscripten_CreateDefaultCursor());
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}
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void
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Emscripten_FiniMouse()
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{
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SDL_Mouse* mouse = SDL_GetMouse();
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Emscripten_FreeCursor(mouse->def_cursor);
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mouse->def_cursor = NULL;
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mouse->CreateCursor = NULL;
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mouse->ShowCursor = NULL;
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mouse->FreeCursor = NULL;
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mouse->WarpMouse = NULL;
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mouse->CreateSystemCursor = NULL;
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mouse->SetRelativeMouseMode = NULL;
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}
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#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
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/* vi: set ts=4 sw=4 expandtab: */
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