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