eden-emu/SDL
20
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Emscripten: Store canvas id in WindowData

Browse source 
Also replace all hardcoded uses of "#canvas" or NULL
This commit is contained in:
Charlie Birks 2019-05-09 12:09:34 +01:00
parent f0a4fea89f
commit 60c48ed787
3 changed files with 39 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

20
src/video/emscripten/SDL_emscriptenvideo.c
View file

@ -196,6 +196,8 @@ Emscripten_CreateWindow(_THIS, SDL_Window * window)
return SDL_OutOfMemory();
}
wdata->canvas_id = SDL_strdup("#canvas");
if (window->flags & SDL_WINDOW_ALLOW_HIGHDPI) {
wdata->pixel_ratio = emscripten_get_device_pixel_ratio();
} else {
@ -206,8 +208,8 @@ Emscripten_CreateWindow(_THIS, SDL_Window * window)
scaled_h = SDL_floor(window->h * wdata->pixel_ratio);
/* set a fake size to check if there is any CSS sizing the canvas */
emscripten_set_canvas_element_size(NULL, 1, 1);
emscripten_get_element_css_size(NULL, &css_w, &css_h);
emscripten_set_canvas_element_size(wdata->canvas_id, 1, 1);
emscripten_get_element_css_size(wdata->canvas_id, &css_w, &css_h);
wdata->external_size = SDL_floor(css_w) != 1 || SDL_floor(css_h) != 1;
@ -218,14 +220,13 @@ Emscripten_CreateWindow(_THIS, SDL_Window * window)
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, css_w, css_h);
}
emscripten_set_canvas_element_size(NULL, scaled_w, scaled_h);
emscripten_set_canvas_element_size(wdata->canvas_id, scaled_w, scaled_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);
emscripten_set_element_css_size(wdata->canvas_id, window->w, window->h);
}
}
@ -269,11 +270,11 @@ static void Emscripten_SetWindowSize(_THIS, SDL_Window * window)
if (window->flags & SDL_WINDOW_ALLOW_HIGHDPI) {
data->pixel_ratio = emscripten_get_device_pixel_ratio();
}
emscripten_set_canvas_element_size(NULL, window->w * data->pixel_ratio, window->h * data->pixel_ratio);
emscripten_set_canvas_element_size(data->canvas_id, 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);
emscripten_set_element_css_size(data->canvas_id, window->w, window->h);
}
}
}
@ -295,7 +296,8 @@ Emscripten_DestroyWindow(_THIS, SDL_Window * window)
#endif
/* We can't destroy the canvas, so resize it to zero instead */
emscripten_set_canvas_element_size(NULL, 0, 0);
emscripten_set_canvas_element_size(data->canvas_id, 0, 0);
SDL_free(data->canvas_id);
SDL_free(window->driverdata);
window->driverdata = NULL;
@ -332,7 +334,7 @@ Emscripten_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * di
data->requested_fullscreen_mode = window->flags & (SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN);
data->fullscreen_resize = is_desktop_fullscreen;
res = emscripten_request_fullscreen_strategy(NULL, 1, &strategy);
res = emscripten_request_fullscreen_strategy(data->canvas_id, 1, &strategy);
if(res != EMSCRIPTEN_RESULT_SUCCESS && res != EMSCRIPTEN_RESULT_DEFERRED) {
/* unset flags, fullscreen failed */
window->flags &= ~(SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN);