Do not duplicate relative mouse mode state

The relative mouse mode is tracked by SDL, and accessible via
SDL_GetRelativeMouseMode().

This is more robust in case SDL changes the relative mouse mode on its
own.
This commit is contained in:
Romain Vimont 2022-02-09 21:06:16 +01:00
parent 43ae418752
commit 7848a387c8
4 changed files with 34 additions and 27 deletions

View file

@ -163,14 +163,21 @@ sc_screen_is_relative_mode(struct sc_screen *screen) {
}
static void
sc_screen_capture_mouse(struct sc_screen *screen, bool capture) {
sc_screen_set_mouse_capture(bool capture) {
if (SDL_SetRelativeMouseMode(capture)) {
LOGE("Could not set relative mouse mode to %s: %s",
capture ? "true" : "false", SDL_GetError());
return;
}
}
screen->mouse_captured = capture;
static inline bool
sc_screen_get_mouse_capture(void) {
return SDL_GetRelativeMouseMode();
}
static inline void
sc_screen_toggle_mouse_capture(void) {
sc_screen_set_mouse_capture(!sc_screen_get_mouse_capture());
}
static void
@ -372,7 +379,6 @@ sc_screen_init(struct sc_screen *screen,
screen->fullscreen = false;
screen->maximized = false;
screen->event_failed = false;
screen->mouse_captured = false;
screen->mouse_capture_key_pressed = 0;
screen->req.x = params->window_x;
@ -710,7 +716,7 @@ sc_screen_update_frame(struct sc_screen *screen) {
if (sc_screen_is_relative_mode(screen)) {
// Capture mouse on start
sc_screen_capture_mouse(screen, true);
sc_screen_set_mouse_capture(true);
}
}
@ -823,7 +829,7 @@ sc_screen_handle_event(struct sc_screen *screen, SDL_Event *event) {
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
if (relative_mode) {
sc_screen_capture_mouse(screen, false);
sc_screen_set_mouse_capture(false);
}
break;
}
@ -853,8 +859,7 @@ sc_screen_handle_event(struct sc_screen *screen, SDL_Event *event) {
if (key == cap) {
// A mouse capture key has been pressed then released:
// toggle the capture mouse mode
sc_screen_capture_mouse(screen,
!screen->mouse_captured);
sc_screen_toggle_mouse_capture();
}
// Mouse capture keys are never forwarded to the device
return;
@ -864,7 +869,7 @@ sc_screen_handle_event(struct sc_screen *screen, SDL_Event *event) {
case SDL_MOUSEWHEEL:
case SDL_MOUSEMOTION:
case SDL_MOUSEBUTTONDOWN:
if (relative_mode && !screen->mouse_captured) {
if (relative_mode && !sc_screen_get_mouse_capture()) {
// Do not forward to input manager, the mouse will be captured
// on SDL_MOUSEBUTTONUP
return;
@ -880,8 +885,8 @@ sc_screen_handle_event(struct sc_screen *screen, SDL_Event *event) {
}
break;
case SDL_MOUSEBUTTONUP:
if (relative_mode && !screen->mouse_captured) {
sc_screen_capture_mouse(screen, true);
if (relative_mode && !sc_screen_get_mouse_capture()) {
sc_screen_set_mouse_capture(true);
return;
}
break;

View file

@ -60,7 +60,6 @@ struct sc_screen {
bool event_failed; // in case SDL_PushEvent() returned an error
bool mouse_captured; // only relevant in relative mouse mode
// To enable/disable mouse capture, a mouse capture key (LALT, LGUI or
// RGUI) must be pressed. This variable tracks the pressed capture key.
SDL_Keycode mouse_capture_key_pressed;

View file

@ -5,15 +5,21 @@
#include "util/log.h"
static void
sc_screen_otg_capture_mouse(struct sc_screen_otg *screen, bool capture) {
assert(screen->mouse);
sc_screen_otg_set_mouse_capture(bool capture) {
if (SDL_SetRelativeMouseMode(capture)) {
LOGE("Could not set relative mouse mode to %s: %s",
capture ? "true" : "false", SDL_GetError());
return;
}
}
screen->mouse_captured = capture;
static inline bool
sc_screen_otg_get_mouse_capture(void) {
return SDL_GetRelativeMouseMode();
}
static inline void
sc_screen_otg_toggle_mouse_capture(void) {
sc_screen_otg_set_mouse_capture(!sc_screen_otg_get_mouse_capture());
}
static void
@ -31,7 +37,6 @@ sc_screen_otg_init(struct sc_screen_otg *screen,
screen->keyboard = params->keyboard;
screen->mouse = params->mouse;
screen->mouse_captured = false;
screen->mouse_capture_key_pressed = 0;
const char *title = params->window_title;
@ -81,7 +86,7 @@ sc_screen_otg_init(struct sc_screen_otg *screen,
if (screen->mouse) {
// Capture mouse on start
sc_screen_otg_capture_mouse(screen, true);
sc_screen_otg_set_mouse_capture(true);
}
return true;
@ -193,7 +198,7 @@ sc_screen_otg_handle_event(struct sc_screen_otg *screen, SDL_Event *event) {
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
if (screen->mouse) {
sc_screen_otg_capture_mouse(screen, false);
sc_screen_otg_set_mouse_capture(false);
}
break;
}
@ -227,8 +232,7 @@ sc_screen_otg_handle_event(struct sc_screen_otg *screen, SDL_Event *event) {
if (key == cap) {
// A mouse capture key has been pressed then released:
// toggle the capture mouse mode
sc_screen_otg_capture_mouse(screen,
!screen->mouse_captured);
sc_screen_otg_toggle_mouse_capture();
}
// Mouse capture keys are never forwarded to the device
return;
@ -240,26 +244,26 @@ sc_screen_otg_handle_event(struct sc_screen_otg *screen, SDL_Event *event) {
}
break;
case SDL_MOUSEMOTION:
if (screen->mouse && screen->mouse_captured) {
if (screen->mouse && sc_screen_otg_get_mouse_capture()) {
sc_screen_otg_process_mouse_motion(screen, &event->motion);
}
break;
case SDL_MOUSEBUTTONDOWN:
if (screen->mouse && screen->mouse_captured) {
if (screen->mouse && sc_screen_otg_get_mouse_capture()) {
sc_screen_otg_process_mouse_button(screen, &event->button);
}
break;
case SDL_MOUSEBUTTONUP:
if (screen->mouse) {
if (screen->mouse_captured) {
if (sc_screen_otg_get_mouse_capture()) {
sc_screen_otg_process_mouse_button(screen, &event->button);
} else {
sc_screen_otg_capture_mouse(screen, true);
sc_screen_otg_set_mouse_capture(true);
}
}
break;
case SDL_MOUSEWHEEL:
if (screen->mouse && screen->mouse_captured) {
if (screen->mouse && sc_screen_otg_get_mouse_capture()) {
sc_screen_otg_process_mouse_wheel(screen, &event->wheel);
}
break;

View file

@ -18,7 +18,6 @@ struct sc_screen_otg {
SDL_Texture *texture;
// See equivalent mechanism in screen.h
bool mouse_captured;
SDL_Keycode mouse_capture_key_pressed;
};