Refactor screencontrol to inputmanager
The "screen control" handled user input, which happened to be only used to control the screen. The controller and screen were passed to every function. Instead, group them in a struct input_manager. The purpose is to add a new shortcut to enable/disable FPS counter. This feature is not related to "screen control", and will require access to the "frames" instance.
This commit is contained in:
Romain Vimont
199
app/src/inputmanager.c
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199
app/src/inputmanager.c
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#include "inputmanager.h"
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#include "convert.h"
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#include "log.h"
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static struct point get_mouse_point(void) {
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int x;
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int y;
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SDL_GetMouseState(&x, &y);
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SDL_assert_release(x >= 0 && x < 0x10000 && y >= 0 && y < 0x10000);
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return (struct point) {
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.x = (Uint16) x,
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.y = (Uint16) y,
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};
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}
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static SDL_bool is_ctrl_down(void) {
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const Uint8 *state = SDL_GetKeyboardState(NULL);
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return state[SDL_SCANCODE_LCTRL] || state[SDL_SCANCODE_RCTRL];
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}
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static void send_keycode(struct controller *controller, enum android_keycode keycode, const char *name) {
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// send DOWN event
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struct control_event control_event = {
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.type = CONTROL_EVENT_TYPE_KEYCODE,
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.keycode_event = {
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.action = AKEY_EVENT_ACTION_DOWN,
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.keycode = keycode,
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.metastate = 0,
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},
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};
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if (!controller_push_event(controller, &control_event)) {
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LOGW("Cannot send %s (DOWN)", name);
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return;
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}
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// send UP event
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control_event.keycode_event.action = AKEY_EVENT_ACTION_UP;
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if (!controller_push_event(controller, &control_event)) {
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LOGW("Cannot send %s (UP)", name);
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}
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}
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static inline void action_home(struct controller *controller) {
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send_keycode(controller, AKEYCODE_HOME, "HOME");
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}
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static inline void action_back(struct controller *controller) {
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send_keycode(controller, AKEYCODE_BACK, "BACK");
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}
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static inline void action_app_switch(struct controller *controller) {
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send_keycode(controller, AKEYCODE_APP_SWITCH, "APP_SWITCH");
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}
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static inline void action_power(struct controller *controller) {
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send_keycode(controller, AKEYCODE_POWER, "POWER");
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}
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static inline void action_volume_up(struct controller *controller) {
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send_keycode(controller, AKEYCODE_VOLUME_UP, "VOLUME_UP");
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}
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static inline void action_volume_down(struct controller *controller) {
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send_keycode(controller, AKEYCODE_VOLUME_DOWN, "VOLUME_DOWN");
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}
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static void turn_screen_on(struct controller *controller) {
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struct control_event control_event = {
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.type = CONTROL_EVENT_TYPE_COMMAND,
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.command_event = {
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.action = CONTROL_EVENT_COMMAND_SCREEN_ON,
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},
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};
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if (!controller_push_event(controller, &control_event)) {
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LOGW("Cannot turn screen on");
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}
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}
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void input_manager_process_text_input(struct input_manager *input_manager,
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const SDL_TextInputEvent *event) {
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if (is_ctrl_down()) {
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switch (event->text[0]) {
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case '+':
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action_volume_up(input_manager->controller);
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break;
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case '-':
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action_volume_down(input_manager->controller);
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break;
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}
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return;
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}
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struct control_event control_event;
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control_event.type = CONTROL_EVENT_TYPE_TEXT;
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strncpy(control_event.text_event.text, event->text, TEXT_MAX_LENGTH);
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control_event.text_event.text[TEXT_MAX_LENGTH] = '\0';
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if (!controller_push_event(input_manager->controller, &control_event)) {
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LOGW("Cannot send text event");
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}
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}
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void input_manager_process_key(struct input_manager *input_manager,
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const SDL_KeyboardEvent *event) {
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SDL_Keycode keycode = event->keysym.sym;
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SDL_bool ctrl = event->keysym.mod & (KMOD_LCTRL | KMOD_RCTRL);
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SDL_bool shift = event->keysym.mod & (KMOD_LSHIFT | KMOD_RSHIFT);
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SDL_bool repeat = event->repeat;
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// capture all Ctrl events
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if (ctrl) {
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// only consider keydown events, and ignore repeated events
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if (repeat || event->type != SDL_KEYDOWN) {
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return;
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}
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if (shift) {
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// currently, there is no shortcut implying SHIFT
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return;
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}
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switch (keycode) {
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case SDLK_h:
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action_home(input_manager->controller);
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return;
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case SDLK_b: // fall-through
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case SDLK_BACKSPACE:
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action_back(input_manager->controller);
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return;
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case SDLK_m:
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action_app_switch(input_manager->controller);
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return;
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case SDLK_p:
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action_power(input_manager->controller);
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return;
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case SDLK_f:
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screen_switch_fullscreen(input_manager->screen);
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return;
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case SDLK_x:
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screen_resize_to_fit(input_manager->screen);
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return;
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case SDLK_g:
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screen_resize_to_pixel_perfect(input_manager->screen);
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return;
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}
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return;
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}
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struct control_event control_event;
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if (input_key_from_sdl_to_android(event, &control_event)) {
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if (!controller_push_event(input_manager->controller, &control_event)) {
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LOGW("Cannot send control event");
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}
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}
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}
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void input_manager_process_mouse_motion(struct input_manager *input_manager,
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const SDL_MouseMotionEvent *event) {
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if (!event->state) {
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// do not send motion events when no button is pressed
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return;
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}
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struct control_event control_event;
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if (mouse_motion_from_sdl_to_android(event, input_manager->screen->frame_size, &control_event)) {
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if (!controller_push_event(input_manager->controller, &control_event)) {
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LOGW("Cannot send mouse motion event");
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}
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}
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}
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void input_manager_process_mouse_button(struct input_manager *input_manager,
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const SDL_MouseButtonEvent *event) {
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if (event->button == SDL_BUTTON_RIGHT && event->type == SDL_MOUSEBUTTONDOWN) {
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turn_screen_on(input_manager->controller);
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return;
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};
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struct control_event control_event;
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if (mouse_button_from_sdl_to_android(event, input_manager->screen->frame_size, &control_event)) {
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if (!controller_push_event(input_manager->controller, &control_event)) {
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LOGW("Cannot send mouse button event");
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}
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}
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}
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void input_manager_process_mouse_wheel(struct input_manager *input_manager,
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const SDL_MouseWheelEvent *event) {
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struct position position = {
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.screen_size = input_manager->screen->frame_size,
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.point = get_mouse_point(),
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};
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struct control_event control_event;
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if (mouse_wheel_from_sdl_to_android(event, position, &control_event)) {
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if (!controller_push_event(input_manager->controller, &control_event)) {
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LOGW("Cannot send wheel button event");
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}
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}
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}
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