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Change: [Emscripten] set default scrolling mode to non-pointer-locking (#9191)

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embeddedt
2021-06-28 12:39:09 -04:00
committed by GitHub
parent 003b6a0c85
commit 883e4ea325
3 changed files with 21 additions and 28 deletions
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33
src/video/sdl2_v.cpp
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@@ -30,11 +30,6 @@
#include "../safeguards.h"
#ifdef __EMSCRIPTEN__
/** Whether we just had a window-enter event. */
static bool _cursor_new_in_window = false;
#endif
void VideoDriver_SDL_Base::MakeDirty(int left, int top, int width, int height)
{
Rect r = {left, top, left + width, top + height};
@@ -203,9 +198,9 @@ bool VideoDriver_SDL_Base::CreateMainSurface(uint w, uint h, bool resize)
bool VideoDriver_SDL_Base::ClaimMousePointer()
{
/* Emscripten never claims the pointer, so we do not need to change the cursor visibility. */
#ifndef __EMSCRIPTEN__
SDL_ShowCursor(0);
#ifdef __EMSCRIPTEN__
SDL_SetRelativeMouseMode(SDL_TRUE);
#endif
return true;
}
@@ -377,27 +372,9 @@ bool VideoDriver_SDL_Base::PollEvent()
switch (ev.type) {
case SDL_MOUSEMOTION:
#ifdef __EMSCRIPTEN__
if (_cursor_new_in_window) {
/* The cursor just moved into the window; this means we don't
* know the absolutely position yet to move relative from.
* Before this time, SDL didn't know it either, and this is
* why we postpone it till now. Update the absolute position
* for this once, and work relative after. */
_cursor.pos.x = ev.motion.x;
_cursor.pos.y = ev.motion.y;
_cursor.dirty = true;
_cursor_new_in_window = false;
SDL_SetRelativeMouseMode(SDL_TRUE);
} else {
_cursor.UpdateCursorPositionRelative(ev.motion.xrel, ev.motion.yrel);
}
#else
if (_cursor.UpdateCursorPosition(ev.motion.x, ev.motion.y, true)) {
SDL_WarpMouseInWindow(this->sdl_window, _cursor.pos.x, _cursor.pos.y);
}
#endif
HandleMouseEvents();
break;
@@ -502,9 +479,7 @@ bool VideoDriver_SDL_Base::PollEvent()
// mouse entered the window, enable cursor
_cursor.in_window = true;
#ifdef __EMSCRIPTEN__
/* Disable relative mouse mode for the first mouse motion,
* so we can pick up the absolutely position again. */
_cursor_new_in_window = true;
/* Ensure pointer lock will not occur. */
SDL_SetRelativeMouseMode(SDL_FALSE);
#endif
} else if (ev.window.event == SDL_WINDOWEVENT_LEAVE) {
@@ -525,7 +500,9 @@ static const char *InitializeSDL()
* UpdateWindowSurface() to update the window's texture instead of
* its surface. */
SDL_SetHint(SDL_HINT_FRAMEBUFFER_ACCELERATION, "0");
#ifndef __EMSCRIPTEN__
SDL_SetHint(SDL_HINT_MOUSE_RELATIVE_MODE_WARP, "1");
#endif
/* Check if the video-driver is already initialized. */
if (SDL_WasInit(SDL_INIT_VIDEO) != 0) return nullptr;