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Merge pull request #10104 from eska014/canvas-mgmt 

Improve HTML5 canvas management
3.0
Rémi Verschelde 2017-08-07 14:49:16 +07:00 committed by GitHub
parent ae88eb5b50 bd48f210a1
commit 4775d07977
2 changed files with 71 additions and 49 deletions
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115
platform/javascript/os_javascript.cpp
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@ -96,30 +96,18 @@ static EM_BOOL _browser_resize_callback(int event_type, const EmscriptenUiEvent
ERR_FAIL_COND_V(event_type != EMSCRIPTEN_EVENT_RESIZE, false);
OS_JavaScript *os = static_cast<OS_JavaScript *>(user_data);
// the order in which _browser_resize_callback and
// _fullscreen_change_callback are called is browser-dependent,
// so try adjusting for fullscreen in both
if (os->is_window_fullscreen() || os->is_window_maximized()) {
OS::VideoMode vm = os->get_video_mode();
vm.width = ui_event->windowInnerWidth;
vm.height = ui_event->windowInnerHeight;
os->set_video_mode(vm);
emscripten_set_canvas_size(ui_event->windowInnerWidth, ui_event->windowInnerHeight);
}
// The order of the fullscreen change event and the window size change
// event varies, even within just one browser, so defer handling
os->request_canvas_size_adjustment();
return false;
}
static Size2 _windowed_size;
static EM_BOOL _fullscreen_change_callback(int event_type, const EmscriptenFullscreenChangeEvent *event, void *user_data) {
ERR_FAIL_COND_V(event_type != EMSCRIPTEN_EVENT_FULLSCREENCHANGE, false);
OS_JavaScript *os = static_cast<OS_JavaScript *>(user_data);
String id = String::utf8(event->id);
// empty id is canvas
if (id.empty() || id == "canvas") {
@ -127,18 +115,8 @@ static EM_BOOL _fullscreen_change_callback(int event_type, const EmscriptenFulls
// this event property is the only reliable information on
// browser fullscreen state
vm.fullscreen = event->isFullscreen;
if (event->isFullscreen) {
vm.width = event->screenWidth;
vm.height = event->screenHeight;
os->set_video_mode(vm);
emscripten_set_canvas_size(vm.width, vm.height);
} else {
os->set_video_mode(vm);
if (!os->is_window_maximized()) {
os->set_window_size(_windowed_size);
}
}
os->set_video_mode(vm);
os->request_canvas_size_adjustment();
}
return false;
}
@ -719,14 +697,17 @@ Size2 OS_JavaScript::get_screen_size(int p_screen) const {
void OS_JavaScript::set_window_size(const Size2 p_size) {
window_maximized = false;
windowed_size = p_size;
if (is_window_fullscreen()) {
window_maximized = false;
set_window_fullscreen(false);
} else if (is_window_maximized()) {
set_window_maximized(false);
} else {
video_mode.width = p_size.x;
video_mode.height = p_size.y;
emscripten_set_canvas_size(p_size.x, p_size.y);
}
_windowed_size = p_size;
video_mode.width = p_size.x;
video_mode.height = p_size.y;
emscripten_set_canvas_size(p_size.x, p_size.y);
}
Size2 OS_JavaScript::get_window_size() const {
@ -739,20 +720,30 @@ Size2 OS_JavaScript::get_window_size() const {
void OS_JavaScript::set_window_maximized(bool p_enabled) {
window_maximized = p_enabled;
if (p_enabled) {
if (is_window_fullscreen()) {
// _browser_resize callback will set canvas size
set_window_fullscreen(false);
} else {
/* clang-format off */
video_mode.width = EM_ASM_INT_V(return window.innerWidth);
video_mode.height = EM_ASM_INT_V(return window.innerHeight);
/* clang-format on */
emscripten_set_canvas_size(video_mode.width, video_mode.height);
}
} else {
set_window_size(_windowed_size);
if (is_window_fullscreen()) {
set_window_fullscreen(false);
return;
}
// Calling emscripten_enter_soft_fullscreen mutltiple times hides all
// page elements except the canvas permanently, so track state
if (p_enabled && !soft_fs_enabled) {
EmscriptenFullscreenStrategy strategy;
strategy.scaleMode = EMSCRIPTEN_FULLSCREEN_SCALE_STRETCH;
strategy.canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF;
strategy.filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT;
strategy.canvasResizedCallback = NULL;
emscripten_enter_soft_fullscreen(NULL, &strategy);
soft_fs_enabled = true;
video_mode.width = get_window_size().width;
video_mode.height = get_window_size().height;
} else if (!p_enabled) {
emscripten_exit_soft_fullscreen();
soft_fs_enabled = false;
video_mode.width = windowed_size.width;
video_mode.height = windowed_size.height;
emscripten_set_canvas_size(video_mode.width, video_mode.height);
}
}
@ -766,9 +757,17 @@ void OS_JavaScript::set_window_fullscreen(bool p_enable) {
// _browser_resize_callback or _fullscreen_change_callback
EMSCRIPTEN_RESULT result;
if (p_enable) {
/* clang-format off */
EM_ASM(Module.requestFullscreen(false, false););
/* clang-format on */
if (window_maximized) {
// soft fs during real fs can cause issues
set_window_maximized(false);
window_maximized = true;
}
EmscriptenFullscreenStrategy strategy;
strategy.scaleMode = EMSCRIPTEN_FULLSCREEN_SCALE_STRETCH;
strategy.canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF;
strategy.filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT;
strategy.canvasResizedCallback = NULL;
emscripten_request_fullscreen_strategy(NULL, false, &strategy);
} else {
result = emscripten_exit_fullscreen();
if (result != EMSCRIPTEN_RESULT_SUCCESS) {
@ -782,6 +781,11 @@ bool OS_JavaScript::is_window_fullscreen() const {
return video_mode.fullscreen;
}
void OS_JavaScript::request_canvas_size_adjustment() {
canvas_size_adjustment_requested = true;
}
void OS_JavaScript::get_fullscreen_mode_list(List<VideoMode> *p_list, int p_screen) const {
Size2 screen = get_screen_size();
@ -841,6 +845,17 @@ bool OS_JavaScript::main_loop_iterate() {
}
}
process_joypads();
if (canvas_size_adjustment_requested) {
if (video_mode.fullscreen || window_maximized) {
video_mode.width = get_window_size().width;
video_mode.height = get_window_size().height;
}
if (!video_mode.fullscreen) {
set_window_maximized(window_maximized);
}
canvas_size_adjustment_requested = false;
}
return Main::iteration();
}
@ -980,6 +995,8 @@ OS_JavaScript::OS_JavaScript(const char *p_execpath, GetDataDirFunc p_get_data_d
main_loop = NULL;
gl_extensions = NULL;
window_maximized = false;
soft_fs_enabled = false;
canvas_size_adjustment_requested = false;
get_data_dir_func = p_get_data_dir_func;
FileAccessUnix::close_notification_func = _close_notification_funcs;

5
platform/javascript/os_javascript.h
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@ -59,7 +59,10 @@ class OS_JavaScript : public OS_Unix {
const char *gl_extensions;
InputDefault *input;
Vector2 windowed_size;
bool window_maximized;
bool soft_fs_enabled;
bool canvas_size_adjustment_requested;
VideoMode video_mode;
CursorShape cursor_shape;
MainLoop *main_loop;
@ -130,6 +133,8 @@ public:
virtual void set_window_fullscreen(bool p_enable);
virtual bool is_window_fullscreen() const;
void request_canvas_size_adjustment();
virtual String get_name();
virtual MainLoop *get_main_loop() const;