mirror of https://github.com/swaywm/sway.git
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <wlr/util/log.h>
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#include "cairo.h"
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#include "pango.h"
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#include "pool-buffer.h"
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#include "swaybar/bar.h"
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#include "swaybar/config.h"
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#include "swaybar/render.h"
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#include "wlr-layer-shell-unstable-v1-client-protocol.h"
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static uint32_t render_to_cairo(cairo_t *cairo, struct swaybar *bar,
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struct swaybar_output *output) {
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struct swaybar_config *config = bar->config;
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cairo_save(cairo);
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cairo_set_operator(cairo, CAIRO_OPERATOR_CLEAR);
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cairo_paint(cairo);
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cairo_restore(cairo);
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cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
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if (output->focused) {
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cairo_set_source_u32(cairo, config->colors.focused_background);
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} else {
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cairo_set_source_u32(cairo, config->colors.background);
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}
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cairo_paint(cairo);
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// TODO: use actual height
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return 20;
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}
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void render_frame(struct swaybar *bar,
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struct swaybar_output *output) {
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cairo_surface_t *recorder = cairo_recording_surface_create(
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CAIRO_CONTENT_COLOR_ALPHA, NULL);
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cairo_t *cairo = cairo_create(recorder);
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uint32_t height = render_to_cairo(cairo, bar, output);
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if (height != output->height) {
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// Reconfigure surface
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zwlr_layer_surface_v1_set_size(
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output->layer_surface, 0, height);
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// TODO: this could infinite loop if the compositor assigns us a
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// different height than what we asked for
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wl_surface_commit(output->surface);
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wl_display_roundtrip(bar->display);
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} else {
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// Replay recording into shm and send it off
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output->current_buffer = get_next_buffer(bar->shm,
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output->buffers, output->width, output->height);
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cairo_t *shm = output->current_buffer->cairo;
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cairo_set_source_surface(shm, recorder, 0.0, 0.0);
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cairo_paint(shm);
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wl_surface_attach(output->surface,
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output->current_buffer->buffer, 0, 0);
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wl_surface_damage(output->surface, 0, 0, output->width, output->height);
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wl_surface_commit(output->surface);
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wl_display_roundtrip(bar->display);
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}
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cairo_surface_destroy(recorder);
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cairo_destroy(cairo);
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}
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