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43 lines
1.8 KiB
C
43 lines
1.8 KiB
C
#include "labwc.h"
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void server_new_output(struct wl_listener *listener, void *data)
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{
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/* This event is rasied by the backend when a new output (aka a display or
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* monitor) becomes available. */
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struct tinywl_server *server =
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wl_container_of(listener, server, new_output);
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struct wlr_output *wlr_output = data;
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/* Some backends don't have modes. DRM+KMS does, and we need to set a mode
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* before we can use the output. The mode is a tuple of (width, height,
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* refresh rate), and each monitor supports only a specific set of modes. We
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* just pick the first, a more sophisticated compositor would let the user
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* configure it or pick the mode the display advertises as preferred. */
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if (!wl_list_empty(&wlr_output->modes)) {
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struct wlr_output_mode *mode =
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wl_container_of(wlr_output->modes.prev, mode, link);
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wlr_output_set_mode(wlr_output, mode);
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}
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/* Allocates and configures our state for this output */
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struct tinywl_output *output =
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calloc(1, sizeof(struct tinywl_output));
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output->wlr_output = wlr_output;
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output->server = server;
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/* Sets up a listener for the frame notify event. */
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output->frame.notify = output_frame;
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wl_signal_add(&wlr_output->events.frame, &output->frame);
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wl_list_insert(&server->outputs, &output->link);
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/* Adds this to the output layout. The add_auto function arranges outputs
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* from left-to-right in the order they appear. A more sophisticated
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* compositor would let the user configure the arrangement of outputs in the
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* layout. */
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wlr_output_layout_add_auto(server->output_layout, wlr_output);
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/* Creating the global adds a wl_output global to the display, which Wayland
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* clients can see to find out information about the output (such as
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* DPI, scale factor, manufacturer, etc). */
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wlr_output_create_global(wlr_output);
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}
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