Merge pull request #786 from emersion/x11-backend-multiple-outputs
backend/x11: add support for multiple outputsmaster
Drew DeVault
7 years ago
committed by
GitHub
commit
96c6091f80
@ -0,0 +1,136 @@
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#include <wlr/interfaces/wlr_input_device.h>
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#include <wlr/interfaces/wlr_keyboard.h>
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#include <wlr/interfaces/wlr_pointer.h>
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#include <wlr/util/log.h>
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#include <xcb/xcb.h>
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#ifdef __linux__
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#include <linux/input-event-codes.h>
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#elif __FreeBSD__
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#include <dev/evdev/input-event-codes.h>
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#endif
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#include "backend/x11.h"
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#include "util/signal.h"
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static uint32_t xcb_button_to_wl(uint32_t button) {
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switch (button) {
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case XCB_BUTTON_INDEX_1: return BTN_LEFT;
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case XCB_BUTTON_INDEX_2: return BTN_MIDDLE;
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case XCB_BUTTON_INDEX_3: return BTN_RIGHT;
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// XXX: I'm not sure the scroll-wheel direction is right
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case XCB_BUTTON_INDEX_4: return BTN_GEAR_UP;
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case XCB_BUTTON_INDEX_5: return BTN_GEAR_DOWN;
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default: return 0;
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}
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}
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bool x11_handle_input_event(struct wlr_x11_backend *x11,
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xcb_generic_event_t *event) {
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switch (event->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) {
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case XCB_KEY_PRESS:
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case XCB_KEY_RELEASE: {
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xcb_key_press_event_t *ev = (xcb_key_press_event_t *)event;
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struct wlr_event_keyboard_key key = {
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.time_msec = ev->time,
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.keycode = ev->detail - 8,
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.state = event->response_type == XCB_KEY_PRESS ?
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WLR_KEY_PRESSED : WLR_KEY_RELEASED,
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.update_state = true,
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};
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// TODO use xcb-xkb for more precise modifiers state?
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wlr_keyboard_notify_key(&x11->keyboard, &key);
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x11->time = ev->time;
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return true;
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}
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case XCB_BUTTON_PRESS: {
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xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
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if (ev->detail == XCB_BUTTON_INDEX_4 ||
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ev->detail == XCB_BUTTON_INDEX_5) {
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double delta = (ev->detail == XCB_BUTTON_INDEX_4 ? -15 : 15);
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struct wlr_event_pointer_axis axis = {
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.device = &x11->pointer_dev,
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.time_msec = ev->time,
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.source = WLR_AXIS_SOURCE_WHEEL,
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.orientation = WLR_AXIS_ORIENTATION_VERTICAL,
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.delta = delta,
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};
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wlr_signal_emit_safe(&x11->pointer.events.axis, &axis);
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x11->time = ev->time;
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break;
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}
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}
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/* fallthrough */
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case XCB_BUTTON_RELEASE: {
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xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
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if (ev->detail != XCB_BUTTON_INDEX_4 &&
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ev->detail != XCB_BUTTON_INDEX_5) {
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struct wlr_event_pointer_button button = {
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.device = &x11->pointer_dev,
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.time_msec = ev->time,
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.button = xcb_button_to_wl(ev->detail),
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.state = event->response_type == XCB_BUTTON_PRESS ?
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WLR_BUTTON_PRESSED : WLR_BUTTON_RELEASED,
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};
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wlr_signal_emit_safe(&x11->pointer.events.button, &button);
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}
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x11->time = ev->time;
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return true;
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}
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case XCB_MOTION_NOTIFY: {
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xcb_motion_notify_event_t *ev = (xcb_motion_notify_event_t *)event;
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struct wlr_x11_output *output =
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x11_output_from_window_id(x11, ev->event);
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if (output == NULL) {
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return false;
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}
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struct wlr_output *wlr_output = &output->wlr_output;
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struct wlr_box box = { .x = ev->event_x, .y = ev->event_y };
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wlr_box_transform(&box, wlr_output->transform, wlr_output->width,
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wlr_output->height, &box);
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box.x /= wlr_output->scale;
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box.y /= wlr_output->scale;
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struct wlr_box layout_box;
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x11_output_layout_get_box(x11, &layout_box);
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double ox = wlr_output->lx / (double)layout_box.width;
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double oy = wlr_output->ly / (double)layout_box.height;
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struct wlr_event_pointer_motion_absolute wlr_event = {
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.device = &x11->pointer_dev,
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.time_msec = ev->time,
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.x = box.x / (double)layout_box.width + ox,
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.y = box.y / (double)layout_box.height + oy,
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};
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wlr_signal_emit_safe(&x11->pointer.events.motion_absolute, &wlr_event);
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x11->time = ev->time;
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return true;
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}
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default:
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#ifdef WLR_HAS_XCB_XKB
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if (x11->xkb_supported && event->response_type == x11->xkb_base_event) {
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xcb_xkb_state_notify_event_t *ev =
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(xcb_xkb_state_notify_event_t *)event;
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wlr_keyboard_notify_modifiers(&x11->keyboard, ev->baseMods,
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ev->latchedMods, ev->lockedMods, ev->lockedGroup);
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return true;
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}
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#endif
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break;
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}
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return false;
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}
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const struct wlr_input_device_impl input_device_impl = { 0 };
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bool wlr_input_device_is_x11(struct wlr_input_device *wlr_dev) {
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return wlr_dev->impl == &input_device_impl;
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}
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@ -0,0 +1,182 @@
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#include <assert.h>
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#include <stdlib.h>
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/util/log.h>
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#include "backend/x11.h"
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#include "util/signal.h"
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static int signal_frame(void *data) {
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struct wlr_x11_output *output = data;
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wlr_output_send_frame(&output->wlr_output);
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wl_event_source_timer_update(output->frame_timer, output->frame_delay);
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return 0;
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}
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static void parse_xcb_setup(struct wlr_output *output, xcb_connection_t *xcb_conn) {
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const xcb_setup_t *xcb_setup = xcb_get_setup(xcb_conn);
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snprintf(output->make, sizeof(output->make), "%.*s",
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xcb_setup_vendor_length(xcb_setup),
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xcb_setup_vendor(xcb_setup));
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snprintf(output->model, sizeof(output->model), "%"PRIu16".%"PRIu16,
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xcb_setup->protocol_major_version,
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xcb_setup->protocol_minor_version);
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}
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static bool output_set_custom_mode(struct wlr_output *wlr_output, int32_t width,
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int32_t height, int32_t refresh) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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struct wlr_x11_backend *x11 = output->x11;
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wlr_output_update_custom_mode(&output->wlr_output, wlr_output->width,
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wlr_output->height, refresh);
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output->frame_delay = 1000000 / refresh;
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const uint32_t values[] = { width, height };
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xcb_configure_window(x11->xcb_conn, output->win,
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XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values);
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return true;
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}
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static void output_transform(struct wlr_output *wlr_output,
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enum wl_output_transform transform) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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output->wlr_output.transform = transform;
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}
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static void output_destroy(struct wlr_output *wlr_output) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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struct wlr_x11_backend *x11 = output->x11;
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wl_list_remove(&output->link);
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wl_event_source_remove(output->frame_timer);
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eglDestroySurface(x11->egl.display, output->surf);
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xcb_destroy_window(x11->xcb_conn, output->win);
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free(output);
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}
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static bool output_make_current(struct wlr_output *wlr_output, int *buffer_age) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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struct wlr_x11_backend *x11 = output->x11;
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return wlr_egl_make_current(&x11->egl, output->surf, buffer_age);
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}
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static bool output_swap_buffers(struct wlr_output *wlr_output,
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pixman_region32_t *damage) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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struct wlr_x11_backend *x11 = output->x11;
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return wlr_egl_swap_buffers(&x11->egl, output->surf, damage);
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}
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static const struct wlr_output_impl output_impl = {
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.set_custom_mode = output_set_custom_mode,
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.transform = output_transform,
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.destroy = output_destroy,
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.make_current = output_make_current,
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.swap_buffers = output_swap_buffers,
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};
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struct wlr_output *wlr_x11_output_create(struct wlr_backend *backend) {
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assert(wlr_backend_is_x11(backend));
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struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
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if (!x11->started) {
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++x11->requested_outputs;
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return NULL;
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}
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struct wlr_x11_output *output = calloc(1, sizeof(struct wlr_x11_output));
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if (output == NULL) {
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return NULL;
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}
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output->x11 = x11;
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struct wlr_output *wlr_output = &output->wlr_output;
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wlr_output_init(wlr_output, &x11->backend, &output_impl, x11->wl_display);
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wlr_output->refresh = 60 * 1000000;
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output->frame_delay = 16; // 60 Hz
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snprintf(wlr_output->name, sizeof(wlr_output->name), "X11-%d",
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wl_list_length(&x11->outputs) + 1);
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parse_xcb_setup(wlr_output, x11->xcb_conn);
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uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
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uint32_t values[2] = {
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x11->screen->white_pixel,
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XCB_EVENT_MASK_EXPOSURE |
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XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE |
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XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE |
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XCB_EVENT_MASK_POINTER_MOTION |
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XCB_EVENT_MASK_STRUCTURE_NOTIFY
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};
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output->win = xcb_generate_id(x11->xcb_conn);
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xcb_create_window(x11->xcb_conn, XCB_COPY_FROM_PARENT, output->win,
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x11->screen->root, 0, 0, 1024, 768, 1, XCB_WINDOW_CLASS_INPUT_OUTPUT,
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x11->screen->root_visual, mask, values);
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output->surf = wlr_egl_create_surface(&x11->egl, &output->win);
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if (!output->surf) {
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wlr_log(L_ERROR, "Failed to create EGL surface");
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free(output);
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return NULL;
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}
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xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
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x11->atoms.wm_protocols, XCB_ATOM_ATOM, 32, 1,
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&x11->atoms.wm_delete_window);
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char title[32];
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if (snprintf(title, sizeof(title), "wlroots - %s", wlr_output->name)) {
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xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
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x11->atoms.net_wm_name, x11->atoms.utf8_string, 8,
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strlen(title), title);
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}
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xcb_map_window(x11->xcb_conn, output->win);
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xcb_flush(x11->xcb_conn);
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struct wl_event_loop *ev = wl_display_get_event_loop(x11->wl_display);
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output->frame_timer = wl_event_loop_add_timer(ev, signal_frame, output);
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wl_event_source_timer_update(output->frame_timer, output->frame_delay);
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wlr_output_update_enabled(wlr_output, true);
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wl_list_insert(&x11->outputs, &output->link);
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wlr_signal_emit_safe(&x11->backend.events.new_output, wlr_output);
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return wlr_output;
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}
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void x11_output_handle_configure_notify(struct wlr_x11_output *output,
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xcb_configure_notify_event_t *ev) {
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struct wlr_x11_backend *x11 = output->x11;
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wlr_output_update_custom_mode(&output->wlr_output, ev->width,
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ev->height, output->wlr_output.refresh);
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// Move the pointer to its new location
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xcb_query_pointer_cookie_t cookie =
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xcb_query_pointer(x11->xcb_conn, output->win);
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xcb_query_pointer_reply_t *pointer =
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xcb_query_pointer_reply(x11->xcb_conn, cookie, NULL);
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if (!pointer) {
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return;
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}
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struct wlr_event_pointer_motion_absolute abs = {
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.device = &x11->pointer_dev,
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.time_msec = x11->time,
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.x = (double)pointer->root_x / output->wlr_output.width,
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.y = (double)pointer->root_y / output->wlr_output.height,
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};
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wlr_signal_emit_safe(&x11->pointer.events.motion_absolute, &abs);
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free(pointer);
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}
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bool wlr_output_is_x11(struct wlr_output *wlr_output) {
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return wlr_output->impl == &output_impl;
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}
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