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https://codeberg.org/dnkl/foot.git
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f0fc82f098
In unhook, add the generated image to a list of finished sixel images, along with positioning and size information. When rendering, loop this list of images, and render the images (or parts of) that are visible. When scrolling, check if any part of the images cover the re-cycled lines, and if so, remove the *entire* image from the list. This means we have the following limitations: * The renderer always renders the whole (visible area of) the image(s). There are times when this isn't necessary - for example, when the image is scrolled inside the visible area. * It would be nice if we could crop the image when parts of it is scrolled out.
1325 lines
42 KiB
C
1325 lines
42 KiB
C
#include "render.h"
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/timerfd.h>
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#include <sys/prctl.h>
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#include <wayland-cursor.h>
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#include <xdg-shell.h>
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#include <presentation-time.h>
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#include <fcft/fcft.h>
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#define LOG_MODULE "render"
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#define LOG_ENABLE_DBG 0
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#include "log.h"
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#include "config.h"
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#include "grid.h"
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#include "selection.h"
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#include "shm.h"
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#define min(x, y) ((x) < (y) ? (x) : (y))
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#define max(x, y) ((x) > (y) ? (x) : (y))
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struct renderer {
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struct fdm *fdm;
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struct wayland *wayl;
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};
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static struct {
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size_t total;
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size_t zero; /* commits presented in less than one frame interval */
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size_t one; /* commits presented in one frame interval */
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size_t two; /* commits presented in two or more frame intervals */
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} presentation_statistics = {0};
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static void fdm_hook_refresh_pending_terminals(struct fdm *fdm, void *data);
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struct renderer *
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render_init(struct fdm *fdm, struct wayland *wayl)
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{
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struct renderer *renderer = calloc(1, sizeof(*renderer));
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*renderer = (struct renderer) {
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.fdm = fdm,
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.wayl = wayl,
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};
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if (!fdm_hook_add(fdm, &fdm_hook_refresh_pending_terminals, renderer,
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FDM_HOOK_PRIORITY_NORMAL))
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{
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LOG_ERR("failed to register FDM hook");
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free(renderer);
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return NULL;
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}
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return renderer;
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}
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void
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render_destroy(struct renderer *renderer)
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{
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if (renderer == NULL)
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return;
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fdm_hook_del(renderer->fdm, &fdm_hook_refresh_pending_terminals,
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FDM_HOOK_PRIORITY_NORMAL);
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free(renderer);
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}
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static void __attribute__((destructor))
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log_presentation_statistics(void)
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{
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if (presentation_statistics.total == 0)
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return;
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const size_t total = presentation_statistics.total;
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LOG_INFO("presentation statistics: zero=%f%%, one=%f%%, two=%f%%",
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100. * presentation_statistics.zero / total,
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100. * presentation_statistics.one / total,
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100. * presentation_statistics.two / total);
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}
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static void
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sync_output(void *data,
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struct wp_presentation_feedback *wp_presentation_feedback,
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struct wl_output *output)
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{
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}
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struct presentation_context {
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struct terminal *term;
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struct timeval input;
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struct timeval commit;
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};
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static void
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presented(void *data,
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struct wp_presentation_feedback *wp_presentation_feedback,
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uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec,
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uint32_t refresh, uint32_t seq_hi, uint32_t seq_lo, uint32_t flags)
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{
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struct presentation_context *ctx = data;
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struct terminal *term = ctx->term;
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const struct timeval *input = &ctx->input;
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const struct timeval *commit = &ctx->commit;
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const struct timeval presented = {
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.tv_sec = (uint64_t)tv_sec_hi << 32 | tv_sec_lo,
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.tv_usec = tv_nsec / 1000,
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};
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bool use_input = (input->tv_sec > 0 || input->tv_usec > 0) &&
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timercmp(&presented, input, >);
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char msg[1024];
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int chars = 0;
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if (use_input && timercmp(&presented, input, <))
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return;
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else if (timercmp(&presented, commit, <))
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return;
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LOG_DBG("commit: %lu s %lu µs, presented: %lu s %lu µs",
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commit->tv_sec, commit->tv_usec, presented.tv_sec, presented.tv_usec);
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if (use_input) {
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struct timeval diff;
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timersub(commit, input, &diff);
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chars += snprintf(&msg[chars], sizeof(msg) - chars,
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"input - %lu µs -> ", diff.tv_usec);
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}
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struct timeval diff;
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timersub(&presented, commit, &diff);
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chars += snprintf(&msg[chars], sizeof(msg) - chars,
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"commit - %lu µs -> ", diff.tv_usec);
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if (use_input) {
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assert(timercmp(&presented, input, >));
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timersub(&presented, input, &diff);
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} else {
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assert(timercmp(&presented, commit, >));
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timersub(&presented, commit, &diff);
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}
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chars += snprintf(&msg[chars], sizeof(msg) - chars,
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"presented (total: %lu µs)", diff.tv_usec);
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unsigned frame_count = 0;
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if (tll_length(term->window->on_outputs) > 0) {
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const struct monitor *mon = tll_front(term->window->on_outputs);
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frame_count = (diff.tv_sec * 1000000. + diff.tv_usec) / (1000000. / mon->refresh);
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}
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presentation_statistics.total++;
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if (frame_count >= 2)
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presentation_statistics.two++;
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else if (frame_count >= 1)
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presentation_statistics.one++;
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else
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presentation_statistics.zero++;
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#define _log_fmt "%s (more than %u frames)"
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if (frame_count >= 2)
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LOG_ERR(_log_fmt, msg, frame_count);
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else if (frame_count >= 1)
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LOG_WARN(_log_fmt, msg, frame_count);
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else
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LOG_INFO(_log_fmt, msg, frame_count);
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#undef _log_fmt
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wp_presentation_feedback_destroy(wp_presentation_feedback);
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free(ctx);
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}
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static void
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discarded(void *data, struct wp_presentation_feedback *wp_presentation_feedback)
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{
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struct presentation_context *ctx = data;
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wp_presentation_feedback_destroy(wp_presentation_feedback);
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free(ctx);
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}
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static const struct wp_presentation_feedback_listener presentation_feedback_listener = {
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.sync_output = &sync_output,
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.presented = &presented,
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.discarded = &discarded,
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};
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static struct font *
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attrs_to_font(const struct terminal *term, const struct attributes *attrs)
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{
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int idx = attrs->italic << 1 | attrs->bold;
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return term->fonts[idx];
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}
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static inline struct rgb
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color_hex_to_rgb(uint32_t color)
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{
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return (struct rgb){
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((color >> 16) & 0xff) / 255.,
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((color >> 8) & 0xff) / 255.,
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((color >> 0) & 0xff) / 255.,
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};
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}
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static inline pixman_color_t
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color_hex_to_pixman_with_alpha(uint32_t color, uint16_t alpha)
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{
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int alpha_div = 0xffff / alpha;
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return (pixman_color_t){
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.red = ((color >> 16 & 0xff) | (color >> 8 & 0xff00)) / alpha_div,
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.green = ((color >> 8 & 0xff) | (color >> 0 & 0xff00)) / alpha_div,
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.blue = ((color >> 0 & 0xff) | (color << 8 & 0xff00)) / alpha_div,
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.alpha = alpha,
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};
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}
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static inline pixman_color_t
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color_hex_to_pixman(uint32_t color)
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{
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/* Count on the compiler optimizing this */
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return color_hex_to_pixman_with_alpha(color, 0xffff);
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}
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static inline void
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color_dim(struct rgb *rgb)
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{
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rgb->r /= 2.;
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rgb->g /= 2.;
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rgb->b /= 2.;
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}
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static inline void
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pixman_color_dim(pixman_color_t *color)
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{
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color->red /= 2;
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color->green /= 2;
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color->blue /= 2;
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}
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static inline void
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pixman_color_dim_for_search(pixman_color_t *color)
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{
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color->red /= 3;
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color->green /= 3;
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color->blue /= 3;
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}
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static inline int
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font_baseline(const struct terminal *term)
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{
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return term->fonts[0]->ascent;
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}
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static void
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draw_unfocused_block(const struct terminal *term, pixman_image_t *pix,
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const pixman_color_t *color, int x, int y, int cell_cols)
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{
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pixman_image_fill_rectangles(
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PIXMAN_OP_SRC, pix, color, 4,
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(pixman_rectangle16_t []){
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{x, y, cell_cols * term->cell_width, 1}, /* top */
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{x, y, 1, term->cell_height}, /* left */
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{x + cell_cols * term->cell_width - 1, y, 1, term->cell_height}, /* right */
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{x, y + term->cell_height - 1, cell_cols * term->cell_width, 1}, /* bottom */
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});
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}
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static void
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draw_bar(const struct terminal *term, pixman_image_t *pix,
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const struct font *font,
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const pixman_color_t *color, int x, int y)
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{
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int baseline = y + font_baseline(term) - term->fonts[0]->ascent;
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pixman_image_fill_rectangles(
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PIXMAN_OP_SRC, pix, color,
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1, &(pixman_rectangle16_t){
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x, baseline,
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font->underline.thickness, term->fonts[0]->ascent + term->fonts[0]->descent});
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}
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static void
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draw_underline(const struct terminal *term, pixman_image_t *pix,
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const struct font *font,
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const pixman_color_t *color, int x, int y, int cols)
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{
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pixman_image_fill_rectangles(
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PIXMAN_OP_SRC, pix, color,
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1, &(pixman_rectangle16_t){
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x, y + font_baseline(term) - font->underline.position,
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cols * term->cell_width, font->underline.thickness});
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}
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static void
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draw_strikeout(const struct terminal *term, pixman_image_t *pix,
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const struct font *font,
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const pixman_color_t *color, int x, int y, int cols)
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{
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pixman_image_fill_rectangles(
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PIXMAN_OP_SRC, pix, color,
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1, &(pixman_rectangle16_t){
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x, y + font_baseline(term) - font->strikeout.position,
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cols * term->cell_width, font->strikeout.thickness});
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}
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static void
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draw_cursor(const struct terminal *term, const struct cell *cell,
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const struct font *font, pixman_image_t *pix, pixman_color_t *fg,
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const pixman_color_t *bg, int x, int y, int cols)
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{
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pixman_color_t cursor_color;
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pixman_color_t text_color;
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bool is_selected = cell->attrs.selected;
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if (term->cursor_color.cursor >> 31) {
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cursor_color = color_hex_to_pixman(term->cursor_color.cursor);
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text_color = color_hex_to_pixman(
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term->cursor_color.text >> 31
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? term->cursor_color.text : term->colors.bg);
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if (term->reverse ^ cell->attrs.reverse ^ is_selected) {
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pixman_color_t swap = cursor_color;
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cursor_color = text_color;
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text_color = swap;
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}
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if (term->is_searching && !is_selected) {
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pixman_color_dim_for_search(&cursor_color);
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pixman_color_dim_for_search(&text_color);
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}
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} else {
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cursor_color = *fg;
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text_color = *bg;
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}
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switch (term->cursor_style) {
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case CURSOR_BLOCK:
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if (!term->visual_focus)
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draw_unfocused_block(term, pix, &cursor_color, x, y, cols);
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else if (term->cursor_blink.state == CURSOR_BLINK_ON) {
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*fg = text_color;
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pixman_image_fill_rectangles(
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PIXMAN_OP_SRC, pix, &cursor_color, 1,
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&(pixman_rectangle16_t){x, y, cols * term->cell_width, term->cell_height});
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}
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break;
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case CURSOR_BAR:
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if (term->cursor_blink.state == CURSOR_BLINK_ON || !term->visual_focus)
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draw_bar(term, pix, font, &cursor_color, x, y);
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break;
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case CURSOR_UNDERLINE:
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if (term->cursor_blink.state == CURSOR_BLINK_ON || !term->visual_focus) {
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draw_underline(
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term, pix, attrs_to_font(term, &cell->attrs), &cursor_color,
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x, y, cols);
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}
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break;
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}
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}
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static int
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render_cell(struct terminal *term, pixman_image_t *pix,
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struct cell *cell, int col, int row, bool has_cursor)
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{
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if (cell->attrs.clean)
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return 0;
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cell->attrs.clean = 1;
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int width = term->cell_width;
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int height = term->cell_height;
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int x = term->x_margin + col * width;
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int y = term->y_margin + row * height;
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assert(cell->attrs.selected == 0 || cell->attrs.selected == 1);
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bool is_selected = cell->attrs.selected;
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uint32_t _fg = 0;
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uint32_t _bg = 0;
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/* Use cell specific color, if set, otherwise the default colors (possible reversed) */
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_fg = cell->attrs.have_fg ? cell->attrs.fg : term->colors.fg;
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_bg = cell->attrs.have_bg ? cell->attrs.bg : term->colors.bg;
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/* If *one* is set, we reverse */
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if (term->reverse ^ cell->attrs.reverse ^ is_selected) {
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uint32_t swap = _fg;
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_fg = _bg;
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_bg = swap;
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}
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if (cell->attrs.blink && term->blink.state == BLINK_OFF)
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_fg = _bg;
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pixman_color_t fg = color_hex_to_pixman(_fg);
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pixman_color_t bg = color_hex_to_pixman_with_alpha(_bg, term->colors.alpha);
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if (cell->attrs.dim)
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pixman_color_dim(&fg);
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if (term->is_searching && !is_selected) {
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pixman_color_dim_for_search(&fg);
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pixman_color_dim_for_search(&bg);
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}
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struct font *font = attrs_to_font(term, &cell->attrs);
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const struct glyph *glyph = cell->wc != 0
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? font_glyph_for_wc(font, cell->wc, term->colors.alpha == 0xffff)
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: NULL;
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int cell_cols = glyph != NULL ? max(1, glyph->cols) : 1;
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/* Background */
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pixman_image_fill_rectangles(
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PIXMAN_OP_SRC, pix, &bg, 1,
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&(pixman_rectangle16_t){x, y, cell_cols * width, height});
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if (has_cursor)
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draw_cursor(term, cell, font, pix, &fg, &bg, x, y, cell_cols);
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if (cell->attrs.blink)
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term_arm_blink_timer(term);
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if (cell->wc == 0 || cell->attrs.conceal)
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return cell_cols;
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if (glyph != NULL) {
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if (unlikely(pixman_image_get_format(glyph->pix) == PIXMAN_a8r8g8b8)) {
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/* Glyph surface is a pre-rendered image (typically a color emoji...) */
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if (!(cell->attrs.blink && term->blink.state == BLINK_OFF)) {
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pixman_image_composite32(
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PIXMAN_OP_OVER, glyph->pix, NULL, pix, 0, 0, 0, 0,
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x + glyph->x, y + font_baseline(term) - glyph->y,
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glyph->width, glyph->height);
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}
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} else {
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/* Glyph surface is an alpha mask */
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pixman_image_t *src = pixman_image_create_solid_fill(&fg);
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pixman_image_composite32(
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PIXMAN_OP_OVER, src, glyph->pix, pix, 0, 0, 0, 0,
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x + glyph->x, y + font_baseline(term) - glyph->y,
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glyph->width, glyph->height);
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pixman_image_unref(src);
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}
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}
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/* Underline */
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if (cell->attrs.underline) {
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draw_underline(term, pix, attrs_to_font(term, &cell->attrs),
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&fg, x, y, cell_cols);
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}
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if (cell->attrs.strikethrough) {
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draw_strikeout(term, pix, attrs_to_font(term, &cell->attrs),
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&fg, x, y, cell_cols);
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}
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return cell_cols;
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}
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static void
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grid_render_scroll(struct terminal *term, struct buffer *buf,
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const struct damage *dmg)
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{
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int dst_y = term->y_margin + (dmg->scroll.region.start + 0) * term->cell_height;
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int src_y = term->y_margin + (dmg->scroll.region.start + dmg->scroll.lines) * term->cell_height;
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int height = (dmg->scroll.region.end - dmg->scroll.region.start - dmg->scroll.lines) * term->cell_height;
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LOG_DBG("damage: SCROLL: %d-%d by %d lines (dst-y: %d, src-y: %d, "
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"height: %d, stride: %d, mmap-size: %zu)",
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dmg->scroll.region.start, dmg->scroll.region.end,
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dmg->scroll.lines,
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dst_y, src_y, height, buf->stride,
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buf->size);
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if (height > 0) {
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uint8_t *raw = buf->mmapped;
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memmove(raw + dst_y * buf->stride,
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raw + src_y * buf->stride,
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height * buf->stride);
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface, term->x_margin, dst_y, term->width - term->x_margin, height);
|
|
}
|
|
}
|
|
|
|
static void
|
|
grid_render_scroll_reverse(struct terminal *term, struct buffer *buf,
|
|
const struct damage *dmg)
|
|
{
|
|
int src_y = term->y_margin + (dmg->scroll.region.start + 0) * term->cell_height;
|
|
int dst_y = term->y_margin + (dmg->scroll.region.start + dmg->scroll.lines) * term->cell_height;
|
|
int height = (dmg->scroll.region.end - dmg->scroll.region.start - dmg->scroll.lines) * term->cell_height;
|
|
|
|
LOG_DBG("damage: SCROLL REVERSE: %d-%d by %d lines (dst-y: %d, src-y: %d, "
|
|
"height: %d, stride: %d, mmap-size: %zu)",
|
|
dmg->scroll.region.start, dmg->scroll.region.end,
|
|
dmg->scroll.lines,
|
|
dst_y, src_y, height, buf->stride,
|
|
buf->size);
|
|
|
|
if (height > 0) {
|
|
uint8_t *raw = buf->mmapped;
|
|
memmove(raw + dst_y * buf->stride,
|
|
raw + src_y * buf->stride,
|
|
height * buf->stride);
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface, term->x_margin, dst_y, term->width - term->x_margin, height);
|
|
}
|
|
}
|
|
|
|
static void
|
|
render_row(struct terminal *term, pixman_image_t *pix, struct row *row, int row_no)
|
|
{
|
|
for (int col = term->cols - 1; col >= 0; col--)
|
|
render_cell(term, pix, &row->cells[col], col, row_no, false);
|
|
}
|
|
|
|
int
|
|
render_worker_thread(void *_ctx)
|
|
{
|
|
struct render_worker_context *ctx = _ctx;
|
|
struct terminal *term = ctx->term;
|
|
const int my_id = ctx->my_id;
|
|
free(ctx);
|
|
|
|
char proc_title[16];
|
|
snprintf(proc_title, sizeof(proc_title), "foot:render:%d", my_id);
|
|
|
|
if (prctl(PR_SET_NAME, proc_title, 0, 0, 0) < 0)
|
|
LOG_ERRNO("render worker %d: failed to set process title", my_id);
|
|
|
|
sem_t *start = &term->render.workers.start;
|
|
sem_t *done = &term->render.workers.done;
|
|
mtx_t *lock = &term->render.workers.lock;
|
|
cnd_t *cond = &term->render.workers.cond;
|
|
|
|
while (true) {
|
|
sem_wait(start);
|
|
|
|
struct buffer *buf = term->render.workers.buf;
|
|
bool frame_done = false;
|
|
|
|
while (!frame_done) {
|
|
mtx_lock(lock);
|
|
while (tll_length(term->render.workers.queue) == 0)
|
|
cnd_wait(cond, lock);
|
|
|
|
int row_no = tll_pop_front(term->render.workers.queue);
|
|
mtx_unlock(lock);
|
|
|
|
switch (row_no) {
|
|
default:
|
|
assert(buf != NULL);
|
|
render_row(term, buf->pix, grid_row_in_view(term->grid, row_no), row_no);
|
|
break;
|
|
|
|
case -1:
|
|
frame_done = true;
|
|
sem_post(done);
|
|
break;
|
|
|
|
case -2:
|
|
return 0;
|
|
}
|
|
}
|
|
};
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void frame_callback(
|
|
void *data, struct wl_callback *wl_callback, uint32_t callback_data);
|
|
|
|
static const struct wl_callback_listener frame_listener = {
|
|
.done = &frame_callback,
|
|
};
|
|
|
|
static void
|
|
grid_render(struct terminal *term)
|
|
{
|
|
if (term->is_shutting_down)
|
|
return;
|
|
|
|
#define TIME_FRAME_RENDERING 0
|
|
|
|
#if TIME_FRAME_RENDERING
|
|
struct timeval start_time;
|
|
gettimeofday(&start_time, NULL);
|
|
#endif
|
|
|
|
assert(term->width > 0);
|
|
assert(term->height > 0);
|
|
|
|
unsigned long cookie = (uintptr_t)term;
|
|
struct buffer *buf = shm_get_buffer(
|
|
term->wl->shm, term->width, term->height, cookie);
|
|
|
|
wl_surface_attach(term->window->surface, buf->wl_buf, 0, 0);
|
|
|
|
pixman_image_t *pix = buf->pix;
|
|
|
|
/* If we resized the window, or is flashing, or just stopped flashing */
|
|
if (term->render.last_buf != buf ||
|
|
term->flash.active || term->render.was_flashing ||
|
|
term->is_searching != term->render.was_searching)
|
|
{
|
|
if (term->render.last_buf != NULL &&
|
|
term->render.last_buf->width == buf->width &&
|
|
term->render.last_buf->height == buf->height &&
|
|
!term->flash.active &&
|
|
!term->render.was_flashing &&
|
|
term->is_searching == term->render.was_searching)
|
|
{
|
|
static bool has_warned = false;
|
|
if (!has_warned) {
|
|
LOG_WARN("it appears your Wayland compositor does not support buffer re-use for SHM clients; expect lower performance.");
|
|
has_warned = true;
|
|
}
|
|
|
|
assert(term->render.last_buf->size == buf->size);
|
|
memcpy(buf->mmapped, term->render.last_buf->mmapped, buf->size);
|
|
}
|
|
|
|
else {
|
|
/* Fill area outside the cell grid with the default background color */
|
|
int rmargin = term->x_margin + term->cols * term->cell_width;
|
|
int bmargin = term->y_margin + term->rows * term->cell_height;
|
|
int rmargin_width = term->width - rmargin;
|
|
int bmargin_height = term->height - bmargin;
|
|
|
|
uint32_t _bg = !term->reverse ? term->colors.bg : term->colors.fg;
|
|
pixman_color_t bg = color_hex_to_pixman_with_alpha(_bg, term->colors.alpha);
|
|
if (term->is_searching)
|
|
pixman_color_dim(&bg);
|
|
|
|
pixman_image_fill_rectangles(
|
|
PIXMAN_OP_SRC, pix, &bg, 4,
|
|
(pixman_rectangle16_t[]){
|
|
{0, 0, term->width, term->y_margin}, /* Top */
|
|
{0, 0, term->x_margin, term->height}, /* Left */
|
|
{rmargin, 0, rmargin_width, term->height}, /* Right */
|
|
{0, bmargin, term->width, bmargin_height}}); /* Bottom */
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface, 0, 0, term->width, term->y_margin);
|
|
wl_surface_damage_buffer(
|
|
term->window->surface, 0, 0, term->x_margin, term->height);
|
|
wl_surface_damage_buffer(
|
|
term->window->surface, rmargin, 0, rmargin_width, term->height);
|
|
wl_surface_damage_buffer(
|
|
term->window->surface, 0, bmargin, term->width, bmargin_height);
|
|
|
|
/* Force a full grid refresh */
|
|
term_damage_view(term);
|
|
}
|
|
|
|
term->render.last_buf = buf;
|
|
term->render.was_flashing = term->flash.active;
|
|
term->render.was_searching = term->is_searching;
|
|
}
|
|
|
|
/* Erase old cursor (if we rendered a cursor last time) */
|
|
if (term->render.last_cursor.cell != NULL) {
|
|
|
|
struct cell *cell = term->render.last_cursor.cell;
|
|
struct coord at = term->render.last_cursor.in_view;
|
|
term->render.last_cursor.cell = NULL;
|
|
|
|
/* If cell is already dirty, it will be rendered anyway */
|
|
if (cell->attrs.clean) {
|
|
cell->attrs.clean = 0;
|
|
int cols = render_cell(term, pix, cell, at.col, at.row, false);
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface,
|
|
term->x_margin + at.col * term->cell_width,
|
|
term->y_margin + at.row * term->cell_height,
|
|
cols * term->cell_width, term->cell_height);
|
|
}
|
|
}
|
|
|
|
tll_foreach(term->grid->scroll_damage, it) {
|
|
switch (it->item.type) {
|
|
case DAMAGE_SCROLL:
|
|
if (term->grid->view == term->grid->offset)
|
|
grid_render_scroll(term, buf, &it->item);
|
|
break;
|
|
|
|
case DAMAGE_SCROLL_REVERSE:
|
|
if (term->grid->view == term->grid->offset)
|
|
grid_render_scroll_reverse(term, buf, &it->item);
|
|
break;
|
|
|
|
case DAMAGE_SCROLL_IN_VIEW:
|
|
grid_render_scroll(term, buf, &it->item);
|
|
break;
|
|
|
|
case DAMAGE_SCROLL_REVERSE_IN_VIEW:
|
|
grid_render_scroll_reverse(term, buf, &it->item);
|
|
break;
|
|
}
|
|
|
|
tll_remove(term->grid->scroll_damage, it);
|
|
}
|
|
|
|
if (term->render.workers.count > 0) {
|
|
|
|
term->render.workers.buf = buf;
|
|
for (size_t i = 0; i < term->render.workers.count; i++)
|
|
sem_post(&term->render.workers.start);
|
|
|
|
assert(tll_length(term->render.workers.queue) == 0);
|
|
|
|
for (int r = 0; r < term->rows; r++) {
|
|
struct row *row = grid_row_in_view(term->grid, r);
|
|
|
|
if (!row->dirty)
|
|
continue;
|
|
|
|
mtx_lock(&term->render.workers.lock);
|
|
tll_push_back(term->render.workers.queue, r);
|
|
cnd_signal(&term->render.workers.cond);
|
|
mtx_unlock(&term->render.workers.lock);
|
|
|
|
row->dirty = false;
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface,
|
|
term->x_margin, term->y_margin + r * term->cell_height,
|
|
term->width - term->x_margin, term->cell_height);
|
|
}
|
|
|
|
mtx_lock(&term->render.workers.lock);
|
|
for (size_t i = 0; i < term->render.workers.count; i++)
|
|
tll_push_back(term->render.workers.queue, -1);
|
|
cnd_broadcast(&term->render.workers.cond);
|
|
mtx_unlock(&term->render.workers.lock);
|
|
} else {
|
|
for (int r = 0; r < term->rows; r++) {
|
|
struct row *row = grid_row_in_view(term->grid, r);
|
|
|
|
if (!row->dirty)
|
|
continue;
|
|
|
|
render_row(term, pix, row, r);
|
|
row->dirty = false;
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface,
|
|
term->x_margin, term->y_margin + r * term->cell_height,
|
|
term->width - term->x_margin, term->cell_height);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Determine if we need to render a cursor or not. The cursor
|
|
* could be hidden. Or it could have been scrolled out of view.
|
|
*/
|
|
bool cursor_is_visible = false;
|
|
int view_end = (term->grid->view + term->rows - 1) & (term->grid->num_rows - 1);
|
|
int cursor_row = (term->grid->offset + term->cursor.point.row) & (term->grid->num_rows - 1);
|
|
if (view_end >= term->grid->view) {
|
|
/* Not wrapped */
|
|
if (cursor_row >= term->grid->view && cursor_row <= view_end)
|
|
cursor_is_visible = true;
|
|
} else {
|
|
/* Wrapped */
|
|
if (cursor_row >= term->grid->view || cursor_row <= view_end)
|
|
cursor_is_visible = true;
|
|
}
|
|
|
|
/*
|
|
* Wait for workers to finish before we render the cursor. This is
|
|
* because the cursor cell might be dirty, in which case a worker
|
|
* will render it (but without the cursor).
|
|
*/
|
|
if (term->render.workers.count > 0) {
|
|
for (size_t i = 0; i < term->render.workers.count; i++)
|
|
sem_wait(&term->render.workers.done);
|
|
term->render.workers.buf = NULL;
|
|
}
|
|
|
|
if (cursor_is_visible && !term->hide_cursor) {
|
|
/* Remember cursor coordinates so that we can erase it next
|
|
* time. Note that we need to re-align it against the view. */
|
|
int view_aligned_row
|
|
= (cursor_row - term->grid->view + term->grid->num_rows) & (term->grid->num_rows - 1);
|
|
|
|
term->render.last_cursor.actual = term->cursor.point;
|
|
term->render.last_cursor.in_view = (struct coord) {
|
|
term->cursor.point.col, view_aligned_row};
|
|
|
|
struct row *row = grid_row_in_view(term->grid, view_aligned_row);
|
|
struct cell *cell = &row->cells[term->cursor.point.col];
|
|
|
|
cell->attrs.clean = 0;
|
|
term->render.last_cursor.cell = cell;
|
|
int cols_updated = render_cell(
|
|
term, pix, cell, term->cursor.point.col, view_aligned_row, true);
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface,
|
|
term->x_margin + term->cursor.point.col * term->cell_width,
|
|
term->y_margin + view_aligned_row * term->cell_height,
|
|
cols_updated * term->cell_width, term->cell_height);
|
|
}
|
|
|
|
tll_foreach(term->sixel_images, it) {
|
|
int first_visible_row = -1;
|
|
|
|
if (view_end >= term->grid->view) {
|
|
/* Not wrapped */
|
|
for (size_t i = it->item.pos.row;
|
|
i < it->item.pos.row + (it->item.height + term->cell_height - 1) / term->cell_height;
|
|
i++)
|
|
{
|
|
int row = i & (term->grid->num_rows - 1);
|
|
if (row >= term->grid->view && row <= view_end) {
|
|
first_visible_row = i;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
/* Wrapped */
|
|
for (size_t i = it->item.pos.row;
|
|
i < it->item.pos.row + (it->item.height + term->cell_height - 1) / term->cell_height;
|
|
i++)
|
|
{
|
|
int row = i & (term->grid->num_rows - 1);
|
|
if (row >= term->grid->view || row <= view_end) {
|
|
first_visible_row = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (first_visible_row < 0)
|
|
continue;
|
|
|
|
const int first_img_row = first_visible_row - it->item.pos.row;
|
|
const int row = first_visible_row & (term->grid->num_rows - 1);
|
|
const int view_aligned =
|
|
(row - term->grid->view + term->grid->num_rows) & (term->grid->num_rows - 1);
|
|
|
|
const int x = term->x_margin + it->item.pos.col * term->cell_width;
|
|
const int y = max(term->y_margin, term->y_margin + view_aligned * term->cell_height);
|
|
|
|
const int width = min(it->item.width, term->width - x - term->x_margin);
|
|
const int height = min(
|
|
it->item.height - first_img_row * term->cell_height,
|
|
term->height - y - term->y_margin);
|
|
|
|
//LOG_INFO("x=%d, y=%d, width=%d, height=%d", x, y, width, height);
|
|
|
|
pixman_image_composite(
|
|
PIXMAN_OP_SRC,
|
|
it->item.pix,
|
|
NULL,
|
|
pix,
|
|
0, first_img_row * term->cell_height,
|
|
0, 0,
|
|
x, y,
|
|
width, height);
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface,
|
|
x, y, width, height);
|
|
}
|
|
|
|
if (term->flash.active) {
|
|
/* Note: alpha is pre-computed in each color component */
|
|
/* TODO: dim while searching */
|
|
pixman_image_fill_rectangles(
|
|
PIXMAN_OP_OVER, pix,
|
|
&(pixman_color_t){.red=0x7fff, .green=0x7fff, .blue=0, .alpha=0x7fff},
|
|
1, &(pixman_rectangle16_t){0, 0, term->width, term->height});
|
|
|
|
wl_surface_damage_buffer(
|
|
term->window->surface, 0, 0, term->width, term->height);
|
|
}
|
|
|
|
assert(term->grid->offset >= 0 && term->grid->offset < term->grid->num_rows);
|
|
assert(term->grid->view >= 0 && term->grid->view < term->grid->num_rows);
|
|
|
|
assert(term->window->frame_callback == NULL);
|
|
term->window->frame_callback = wl_surface_frame(term->window->surface);
|
|
wl_callback_add_listener(term->window->frame_callback, &frame_listener, term);
|
|
|
|
wl_surface_set_buffer_scale(term->window->surface, term->scale);
|
|
|
|
if (term->wl->presentation != NULL && term->render.presentation_timings) {
|
|
struct timespec commit_time;
|
|
clock_gettime(term->wl->presentation_clock_id, &commit_time);
|
|
|
|
struct wp_presentation_feedback *feedback = wp_presentation_feedback(
|
|
term->wl->presentation, term->window->surface);
|
|
|
|
if (feedback == NULL) {
|
|
LOG_WARN("failed to create presentation feedback");
|
|
} else {
|
|
struct presentation_context *ctx = malloc(sizeof(*ctx));
|
|
*ctx = (struct presentation_context){
|
|
.term = term,
|
|
.input.tv_sec = term->render.input_time.tv_sec,
|
|
.input.tv_usec = term->render.input_time.tv_nsec / 1000,
|
|
.commit.tv_sec = commit_time.tv_sec,
|
|
.commit.tv_usec = commit_time.tv_nsec / 1000,
|
|
};
|
|
|
|
wp_presentation_feedback_add_listener(
|
|
feedback, &presentation_feedback_listener, ctx);
|
|
|
|
term->render.input_time.tv_sec = 0;
|
|
term->render.input_time.tv_nsec = 0;
|
|
}
|
|
}
|
|
|
|
wl_surface_commit(term->window->surface);
|
|
|
|
#if TIME_FRAME_RENDERING
|
|
struct timeval end_time;
|
|
gettimeofday(&end_time, NULL);
|
|
|
|
struct timeval render_time;
|
|
timersub(&end_time, &start_time, &render_time);
|
|
LOG_INFO("frame rendered in %lds %ldus",
|
|
render_time.tv_sec, render_time.tv_usec);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
frame_callback(void *data, struct wl_callback *wl_callback, uint32_t callback_data)
|
|
{
|
|
struct terminal *term = data;
|
|
|
|
assert(term->window->frame_callback == wl_callback);
|
|
wl_callback_destroy(wl_callback);
|
|
term->window->frame_callback = NULL;
|
|
|
|
if (term->render.pending) {
|
|
term->render.pending = false;
|
|
grid_render(term);
|
|
}
|
|
}
|
|
|
|
void
|
|
render_search_box(struct terminal *term)
|
|
{
|
|
assert(term->window->search_sub_surface != NULL);
|
|
|
|
const size_t wanted_visible_chars = max(20, term->search.len);
|
|
|
|
const int scale = term->scale >= 1 ? term->scale : 1;
|
|
const size_t margin = scale * 3;
|
|
|
|
const size_t width = min(
|
|
term->width - 2 * margin,
|
|
2 * margin + wanted_visible_chars * term->cell_width);
|
|
const size_t height = min(
|
|
term->height - 2 * margin,
|
|
2 * margin + 1 * term->cell_height);
|
|
|
|
const size_t visible_chars = (width - 2 * margin) / term->cell_width;
|
|
size_t glyph_offset = term->render.search_glyph_offset;
|
|
|
|
unsigned long cookie = (uintptr_t)term + 1;
|
|
struct buffer *buf = shm_get_buffer(term->wl->shm, width, height, cookie);
|
|
|
|
/* Background - yellow on empty/match, red on mismatch */
|
|
pixman_color_t color = color_hex_to_pixman(
|
|
term->search.match_len == term->search.len
|
|
? term->colors.table[3] : term->colors.table[1]);
|
|
|
|
pixman_image_fill_rectangles(
|
|
PIXMAN_OP_SRC, buf->pix, &color,
|
|
1, &(pixman_rectangle16_t){0, 0, width, height});
|
|
|
|
struct font *font = term->fonts[0];
|
|
int x = margin;
|
|
int y = margin;
|
|
pixman_color_t fg = color_hex_to_pixman(term->colors.table[0]);
|
|
|
|
if (term->search.cursor < glyph_offset ||
|
|
term->search.cursor >= glyph_offset + visible_chars + 2)
|
|
{
|
|
/* Make sure cursor is always visible */
|
|
term->render.search_glyph_offset = glyph_offset = term->search.cursor;
|
|
}
|
|
|
|
/* Text (what the user entered - *not* match(es)) */
|
|
for (size_t i = glyph_offset;
|
|
i < term->search.len && i - glyph_offset < visible_chars + 1;
|
|
i++)
|
|
{
|
|
if (i == term->search.cursor)
|
|
draw_bar(term, buf->pix, font, &fg, x, y);
|
|
|
|
const struct glyph *glyph = font_glyph_for_wc(font, term->search.buf[i], true);
|
|
if (glyph == NULL)
|
|
continue;
|
|
|
|
pixman_image_t *src = pixman_image_create_solid_fill(&fg);
|
|
pixman_image_composite32(
|
|
PIXMAN_OP_OVER, src, glyph->pix, buf->pix, 0, 0, 0, 0,
|
|
x + glyph->x, y + font_baseline(term) - glyph->y,
|
|
glyph->width, glyph->height);
|
|
pixman_image_unref(src);
|
|
|
|
x += term->cell_width;
|
|
}
|
|
|
|
if (term->search.cursor >= term->search.len)
|
|
draw_bar(term, buf->pix, font, &fg, x, y);
|
|
|
|
wl_subsurface_set_position(
|
|
term->window->search_sub_surface,
|
|
max(0, (int32_t)term->width - width - margin),
|
|
max(0, (int32_t)term->height - height - margin));
|
|
|
|
wl_surface_damage_buffer(term->window->search_surface, 0, 0, width, height);
|
|
wl_surface_attach(term->window->search_surface, buf->wl_buf, 0, 0);
|
|
wl_surface_set_buffer_scale(term->window->search_surface, scale);
|
|
wl_surface_commit(term->window->search_surface);
|
|
}
|
|
|
|
/* Move to terminal.c? */
|
|
static void
|
|
maybe_resize(struct terminal *term, int width, int height, bool force)
|
|
{
|
|
if (!force && (width == 0 || height == 0))
|
|
return;
|
|
|
|
int scale = -1;
|
|
tll_foreach(term->window->on_outputs, it) {
|
|
if (it->item->scale > scale)
|
|
scale = it->item->scale;
|
|
}
|
|
|
|
if (scale == -1) {
|
|
/* Haven't 'entered' an output yet? */
|
|
scale = 1;
|
|
}
|
|
|
|
width *= scale;
|
|
height *= scale;
|
|
|
|
if (!force && width == 0 && height == 0) {
|
|
/* Assume we're not fully up and running yet */
|
|
return;
|
|
}
|
|
|
|
if (!force && width == term->width && height == term->height && scale == term->scale)
|
|
return;
|
|
|
|
selection_cancel(term);
|
|
|
|
/* Cancel an application initiated "Synchronized Update" */
|
|
term_disable_app_sync_updates(term);
|
|
|
|
term->width = width;
|
|
term->height = height;
|
|
term->scale = scale;
|
|
|
|
const int scrollback_lines = term->render.scrollback_lines;
|
|
|
|
/* Screen rows/cols before resize */
|
|
const int old_cols = term->cols;
|
|
const int old_rows = term->rows;
|
|
|
|
/* Padding */
|
|
const int pad_x = term->width > 2 * scale * term->conf->pad_x ? scale * term->conf->pad_x : 0;
|
|
const int pad_y = term->height > 2 * scale * term->conf->pad_y ? scale * term->conf->pad_y : 0;
|
|
|
|
/* Screen rows/cols after resize */
|
|
const int new_cols = max((term->width - 2 * pad_x) / term->cell_width, 1);
|
|
const int new_rows = max((term->height - 2 * pad_y) / term->cell_height, 1);
|
|
|
|
/* Grid rows/cols after resize */
|
|
const int new_normal_grid_rows = 1 << (32 - __builtin_clz(new_rows + scrollback_lines - 1));
|
|
const int new_alt_grid_rows = 1 << (32 - __builtin_clz(new_rows));
|
|
|
|
assert(new_cols >= 1);
|
|
assert(new_rows >= 1);
|
|
|
|
/* Margins */
|
|
term->x_margin = (term->width - new_cols * term->cell_width) / 2;
|
|
term->y_margin = (term->height - new_rows * term->cell_height) / 2;
|
|
|
|
if (new_cols == old_cols && new_rows == old_rows) {
|
|
LOG_DBG("grid layout unaffected; skipping reflow");
|
|
goto damage_view;
|
|
}
|
|
|
|
/* Reflow grids */
|
|
int last_normal_row = grid_reflow(
|
|
&term->normal, new_normal_grid_rows, new_cols, old_rows, new_rows);
|
|
int last_alt_row = grid_reflow(
|
|
&term->alt, new_alt_grid_rows, new_cols, old_rows, new_rows);
|
|
|
|
/* Reset tab stops */
|
|
tll_free(term->tab_stops);
|
|
for (int c = 0; c < new_cols; c += 8)
|
|
tll_push_back(term->tab_stops, c);
|
|
|
|
term->cols = new_cols;
|
|
term->rows = new_rows;
|
|
|
|
LOG_INFO("resize: %dx%d, grid: cols=%d, rows=%d (x-margin=%d, y-margin=%d)",
|
|
term->width, term->height, term->cols, term->rows,
|
|
term->x_margin, term->y_margin);
|
|
|
|
/* Signal TIOCSWINSZ */
|
|
if (ioctl(term->ptmx, TIOCSWINSZ,
|
|
&(struct winsize){
|
|
.ws_row = term->rows,
|
|
.ws_col = term->cols,
|
|
.ws_xpixel = term->cols * term->cell_width,
|
|
.ws_ypixel = term->rows * term->cell_height}) == -1)
|
|
{
|
|
LOG_ERRNO("TIOCSWINSZ");
|
|
}
|
|
|
|
if (term->scroll_region.start >= term->rows)
|
|
term->scroll_region.start = 0;
|
|
|
|
if (term->scroll_region.end >= old_rows)
|
|
term->scroll_region.end = term->rows;
|
|
|
|
/* Position cursor at the last copied row */
|
|
/* TODO: can we do better? */
|
|
int cursor_row = term->grid == &term->normal
|
|
? last_normal_row - term->normal.offset
|
|
: last_alt_row - term->alt.offset;
|
|
|
|
while (cursor_row < 0)
|
|
cursor_row += term->grid->num_rows;
|
|
|
|
assert(cursor_row >= 0);
|
|
assert(cursor_row < term->rows);
|
|
|
|
term_cursor_to(
|
|
term,
|
|
cursor_row,
|
|
min(term->cursor.point.col, term->cols - 1));
|
|
|
|
term->render.last_cursor.cell = NULL;
|
|
|
|
damage_view:
|
|
tll_free(term->normal.scroll_damage);
|
|
tll_free(term->alt.scroll_damage);
|
|
term->render.last_buf = NULL;
|
|
term_damage_view(term);
|
|
render_refresh(term);
|
|
}
|
|
|
|
void
|
|
render_resize(struct terminal *term, int width, int height)
|
|
{
|
|
return maybe_resize(term, width, height, false);
|
|
}
|
|
|
|
void
|
|
render_resize_force(struct terminal *term, int width, int height)
|
|
{
|
|
return maybe_resize(term, width, height, true);
|
|
}
|
|
|
|
static void xcursor_callback(
|
|
void *data, struct wl_callback *wl_callback, uint32_t callback_data);
|
|
|
|
static const struct wl_callback_listener xcursor_listener = {
|
|
.done = &xcursor_callback,
|
|
};
|
|
|
|
static void
|
|
render_xcursor_update(struct wayland *wayl, const struct terminal *term)
|
|
{
|
|
/* If called from a frame callback, we may no longer have mouse focus */
|
|
if (wayl->mouse_focus != term)
|
|
return;
|
|
|
|
wayl->pointer.cursor = wl_cursor_theme_get_cursor(wayl->pointer.theme, term->xcursor);
|
|
if (wayl->pointer.cursor == NULL) {
|
|
LOG_ERR("%s: failed to load xcursor pointer '%s'",
|
|
wayl->pointer.theme_name, term->xcursor);
|
|
return;
|
|
}
|
|
|
|
wayl->pointer.xcursor = term->xcursor;
|
|
|
|
const int scale = term->scale;
|
|
struct wl_cursor_image *image = wayl->pointer.cursor->images[0];
|
|
|
|
wl_surface_attach(
|
|
wayl->pointer.surface, wl_cursor_image_get_buffer(image), 0, 0);
|
|
|
|
wl_pointer_set_cursor(
|
|
wayl->pointer.pointer, wayl->pointer.serial,
|
|
wayl->pointer.surface,
|
|
image->hotspot_x / scale, image->hotspot_y / scale);
|
|
|
|
wl_surface_damage_buffer(
|
|
wayl->pointer.surface, 0, 0, INT32_MAX, INT32_MAX);
|
|
|
|
wl_surface_set_buffer_scale(wayl->pointer.surface, scale);
|
|
|
|
assert(wayl->pointer.xcursor_callback == NULL);
|
|
wayl->pointer.xcursor_callback = wl_surface_frame(wayl->pointer.surface);
|
|
wl_callback_add_listener(wayl->pointer.xcursor_callback, &xcursor_listener, wayl);
|
|
|
|
wl_surface_commit(wayl->pointer.surface);
|
|
}
|
|
|
|
static void
|
|
xcursor_callback(void *data, struct wl_callback *wl_callback, uint32_t callback_data)
|
|
{
|
|
struct wayland *wayl = data;
|
|
|
|
assert(wayl->pointer.xcursor_callback == wl_callback);
|
|
wl_callback_destroy(wl_callback);
|
|
wayl->pointer.xcursor_callback = NULL;
|
|
|
|
if (wayl->pointer.pending_terminal != NULL) {
|
|
render_xcursor_update(wayl, wayl->pointer.pending_terminal);
|
|
wayl->pointer.pending_terminal = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
fdm_hook_refresh_pending_terminals(struct fdm *fdm, void *data)
|
|
{
|
|
struct renderer *renderer = data;
|
|
struct wayland *wayl = renderer->wayl;
|
|
|
|
tll_foreach(renderer->wayl->terms, it) {
|
|
struct terminal *term = it->item;
|
|
|
|
if (!term->render.refresh_needed)
|
|
continue;
|
|
|
|
if (term->render.app_sync_updates.enabled)
|
|
continue;
|
|
|
|
assert(term->window->is_configured);
|
|
term->render.refresh_needed = false;
|
|
|
|
if (term->window->frame_callback == NULL)
|
|
grid_render(term);
|
|
else {
|
|
/* Tells the frame callback to render again */
|
|
term->render.pending = true;
|
|
}
|
|
}
|
|
|
|
if (wayl->pointer.pending_terminal != NULL) {
|
|
if (wayl->pointer.xcursor_callback == NULL) {
|
|
render_xcursor_update(wayl, wayl->pointer.pending_terminal);
|
|
wayl->pointer.pending_terminal = NULL;
|
|
} else {
|
|
/* Frame callback will call render_xcursor_update() */
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
render_set_title(struct terminal *term, const char *_title)
|
|
{
|
|
/* TODO: figure out what the limit actually is */
|
|
static const size_t max_len = 100;
|
|
|
|
const char *title = _title;
|
|
char *copy = NULL;
|
|
|
|
if (strlen(title) > max_len) {
|
|
copy = strndup(_title, max_len);
|
|
title = copy;
|
|
}
|
|
|
|
xdg_toplevel_set_title(term->window->xdg_toplevel, title);
|
|
free(copy);
|
|
}
|
|
|
|
void
|
|
render_refresh(struct terminal *term)
|
|
{
|
|
term->render.refresh_needed = true;
|
|
}
|
|
|
|
bool
|
|
render_xcursor_set(struct terminal *term)
|
|
{
|
|
struct wayland *wayl = term->wl;
|
|
|
|
if (wayl->pointer.theme == NULL)
|
|
return false;
|
|
|
|
if (wayl->mouse_focus == NULL) {
|
|
wayl->pointer.xcursor = NULL;
|
|
wayl->pointer.pending_terminal = NULL;
|
|
return true;
|
|
}
|
|
|
|
if (wayl->mouse_focus != term) {
|
|
/* This terminal doesn't have mouse focus */
|
|
return true;
|
|
}
|
|
|
|
if (wayl->pointer.xcursor == term->xcursor)
|
|
return true;
|
|
|
|
/* FDM hook takes care of actual rendering */
|
|
wayl->pointer.pending_terminal = term;
|
|
return true;
|
|
}
|