namespace: change to wvkbd

Hyprland recently added a layerrule to allow certain layers to appear on the lockscreen,
but layers only identify themselves by the namespace.

Signed-off-by: Maarten van Gompel <proycon@anaproy.nl>

.gitignore

@@ -6,5 +6,6 @@ include/config.h
 .gdb_history
 *.log
 wvkbd
+*.1
 config.h
 wvkbd-mobintl

Makefile

@@ -10,9 +10,10 @@ PKGS = wayland-client xkbcommon pangocairo
 WVKBD_SOURCES += $(wildcard $(SRC)/*.c)
 WVKBD_HEADERS += $(wildcard $(SRC)/*.h)
 
+PKG_CONFIG ?= pkg-config
 CFLAGS += -std=gnu99 -Wall -g -DWITH_WAYLAND_SHM -DLAYOUT=\"layout.${LAYOUT}.h\" -DKEYMAP=\"keymap.${LAYOUT}.h\"
-CFLAGS += $(shell pkg-config --cflags $(PKGS))
+CFLAGS += $(shell $(PKG_CONFIG) --cflags $(PKGS))
-LDFLAGS += $(shell pkg-config --libs $(PKGS)) -lm -lutil -lrt
+LDFLAGS += $(shell $(PKG_CONFIG) --libs $(PKGS)) -lm -lutil -lrt
 
 WAYLAND_HEADERS = $(wildcard proto/*.xml)
 
@@ -20,9 +21,12 @@ HDRS = $(WAYLAND_HEADERS:.xml=-client-protocol.h)
 WAYLAND_SRC = $(HDRS:.h=.c)
 SOURCES = $(WVKBD_SOURCES) $(WAYLAND_SRC)
 
+SCDOC=scdoc
+DOCS = wvkbd.1
+
 OBJECTS = $(SOURCES:.c=.o)
 
-all: ${BIN}
+all: ${BIN} ${DOCS}
 
 config.h:
 	cp config.def.h config.h
@@ -39,11 +43,14 @@ wvkbd-${LAYOUT}: config.h $(OBJECTS) layout.${LAYOUT}.h
 	$(CC) -o wvkbd-${LAYOUT} $(OBJECTS) $(LDFLAGS)
 
 clean:
-	rm -f $(OBJECTS) $(HDRS) $(WAYLAND_SRC) ${BIN}
+	rm -f $(OBJECTS) $(HDRS) $(WAYLAND_SRC) ${BIN} ${DOCS}
 
 format:
 	clang-format -i $(WVKBD_SOURCES) $(WVKBD_HEADERS)
 
+%: %.scd
+	$(SCDOC) < $< > $@
+
 install: all
 	mkdir -p ${DESTDIR}${PREFIX}/bin
 	cp -f ${NAME}-${LAYOUT} ${DESTDIR}${PREFIX}/bin

README.md

@@ -1,6 +1,6 @@
 # wvkbd - On-screen keyboard for wlroots that sucks less
 
-<img src="https://raw.githubusercontent.com/proycon/wvkbd/master/contrib/wvkbd-mobintl.jpg" width=300 /> <img src="https://raw.githubusercontent.com/proycon/wvkbd/master/contrib/wvkbd-mobintl-cyrillic.jpg" width=300 />
+<img src="https://raw.githubusercontent.com/jjsullivan5196/wvkbd/master/contrib/wvkbd-mobintl.jpg" width=300 /> <img src="https://raw.githubusercontent.com/jjsullivan5196/wvkbd/master/contrib/wvkbd-mobintl-cyrillic.jpg" width=300 />
 
 This project aims to deliver a minimal but practically usable implementation of a wlroots on-screen
 keyboard in legible C. This will **only** be a keyboard, not a feedback buzzer,
@@ -25,7 +25,7 @@ new features.
  - Automatic portrait/landscape detection and subsequent layout switching
 
 
-<img src="https://raw.githubusercontent.com/proycon/wvkbd/master/contrib/wvkbd-mobintl-landscape.jpg" width=640 />
+<img src="https://raw.githubusercontent.com/jjsullivan5196/wvkbd/master/contrib/wvkbd-mobintl-landscape.jpg" width=640 />
 
 There are some areas that still need work:
 
@@ -42,6 +42,8 @@ You'll need the following developer packages
  - wayland-client
  - xkbcommon
 
+You also need [scdoc](https://git.sr.ht/~sircmpwn/scdoc/) to generate the documentation.
+
 Make any customizations you would like in `config.def.h` and run `make`
 
 The default set of layouts is called `mobintl` *(mobile international)*, which groups various layouts aimed at mobile devices

config.def.h

@@ -1,24 +1,31 @@
 #ifndef config_def_h_INCLUDED
 #define config_def_h_INCLUDED
 
-static const char *default_font = "Sans 14";
+#define DEFAULT_FONT "Sans 14"
+#define DEFAULT_ROUNDING 5
 static const int transparency = 255;
 
-struct clr_scheme scheme = {
+struct clr_scheme schemes[] = {
+{
   /* colors */
   .bg = {.bgra = {15, 15, 15, transparency}},
   .fg = {.bgra = {45, 45, 45, transparency}},
   .high = {.bgra = {100, 100, 100, transparency}},
   .swipe = {.bgra = {100, 255, 100, 64}},
   .text = {.color = UINT32_MAX},
-};
+  .font = DEFAULT_FONT,
-struct clr_scheme scheme1 = {
+  .rounding = DEFAULT_ROUNDING,
+},
+{
   /* colors */
   .bg = {.bgra = {15, 15, 15, transparency}},
   .fg = {.bgra = {32, 32, 32, transparency}},
   .high = {.bgra = {100, 100, 100, transparency}},
   .swipe = {.bgra = {100, 255, 100, 64}},
   .text = {.color = UINT32_MAX},
+  .font = DEFAULT_FONT,
+  .rounding = DEFAULT_ROUNDING,
+}
 };
 
 /* layers is an ordered list of layouts, used to cycle through */

config.mk

@@ -1,4 +1,4 @@
-VERSION = 0.14
+VERSION = 0.17
 CFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=700
 PREFIX = /usr/local
 MANPREFIX = ${PREFIX}/share/man

drw.c

@@ -4,37 +4,139 @@
 
 #include "drw.h"
 #include "shm_open.h"
+#include "math.h"
+
+void drwbuf_handle_release(void *data, struct wl_buffer *wl_buffer) {
+    struct drwsurf *ds = data;
+    ds->released = true;
+};
+
+const struct wl_buffer_listener buffer_listener = {
+    .release = drwbuf_handle_release
+};
+
+void drwsurf_handle_frame_cb(void* data, struct wl_callback* callback,
+    uint32_t time)
+{
+    struct drwsurf *ds = data;
+    wl_callback_destroy(ds->frame_cb);
+    ds->frame_cb = NULL;
+
+    cairo_rectangle_int_t r = {0};
+    for (int i = 0; i < cairo_region_num_rectangles(ds->damage); i++) {
+        cairo_region_get_rectangle(ds->damage, i, &r);
+        wl_surface_damage(ds->surf, r.x, r.y, r.width, r.height);
+    };
+    cairo_region_subtract(ds->damage, ds->damage);
+
+    drwsurf_attach(ds);
+}
+
+const struct wl_callback_listener frame_listener = {
+    .done = drwsurf_handle_frame_cb
+};
+
+void drwsurf_register_frame_cb(struct drwsurf *ds)
+{
+    if (ds->frame_cb)
+        return;
+    if (!ds->attached)
+        return;
+    ds->frame_cb = wl_surface_frame(ds->surf);
+    wl_callback_add_listener(ds->frame_cb, &frame_listener, ds);
+    wl_surface_commit(ds->surf);
+}
+
+void drwsurf_damage(struct drwsurf *ds, uint32_t x, uint32_t y, uint32_t w, uint32_t h)
+{
+    cairo_rectangle_int_t rect = { x, y, w, h };
+    cairo_region_union_rectangle(ds->damage, &rect);
+    cairo_region_union_rectangle(ds->backport_damage, &rect);
+    drwsurf_register_frame_cb(ds);
+}
 
 void
 drwsurf_resize(struct drwsurf *ds, uint32_t w, uint32_t h, double s)
 {
-    if (ds->buf) {
-        munmap(ds->pool_data, ds->size);
-        wl_buffer_destroy(ds->buf);
-        ds->buf = NULL;
-    }
-
     ds->scale = s;
-    ds->width = w * s;
+    ds->width = ceil(w * s);
-    ds->height = h * s;
+    ds->height = ceil(h * s);
 
-    setup_buffer(ds);
+    if (ds->damage)
+        cairo_region_destroy(ds->damage);
+    ds->damage = cairo_region_create();
+    if (ds->backport_damage)
+        cairo_region_destroy(ds->backport_damage);
+    ds->backport_damage = cairo_region_create();
+
+    ds->released = true;
+
+    setup_buffer(ds, ds->back_buffer);
+    setup_buffer(ds, ds->display_buffer);
+}
+
+void
+drwsurf_backport(struct drwsurf *ds)
+{
+    cairo_save(ds->back_buffer->cairo);
+
+    cairo_scale(ds->back_buffer->cairo, 1/ds->scale, 1/ds->scale);
+    cairo_set_operator(ds->back_buffer->cairo, CAIRO_OPERATOR_SOURCE);
+
+    cairo_rectangle_int_t r = {0};
+    for (int i = 0; i < cairo_region_num_rectangles(ds->backport_damage); i++) {
+        cairo_region_get_rectangle(ds->backport_damage, i, &r);
+
+        cairo_set_source_surface(ds->back_buffer->cairo, ds->display_buffer->cairo_surf, 0, 0);
+        cairo_rectangle(
+            ds->back_buffer->cairo,
+            r.x * ds->scale,
+            r.y * ds->scale,
+            r.width * ds->scale,
+            r.height * ds->scale
+        );
+        cairo_fill(ds->back_buffer->cairo);
+    };
+
+    cairo_restore(ds->back_buffer->cairo);
+    cairo_region_subtract(ds->backport_damage, ds->backport_damage);
+}
+
+void
+drwsurf_attach(struct drwsurf *ds)
+{
+    wl_surface_attach(ds->surf, ds->back_buffer->buf, 0, 0);
+    wl_surface_commit(ds->surf);
+    ds->released = false;
+    ds->attached = true;
 }
 
 void
 drwsurf_flip(struct drwsurf *ds)
 {
-    wl_surface_attach(ds->surf, ds->buf, 0, 0);
+    if (ds->released)
-    wl_surface_commit(ds->surf);
+        return;
+    ds->released = true;
+    struct drwbuf *tmp = ds->back_buffer;
+    ds->back_buffer = ds->display_buffer;
+    ds->display_buffer = tmp;
+
+    drwsurf_backport(ds);
 }
 
 void
-drw_draw_text(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
+drw_draw_text(struct drwsurf *ds, Color color, uint32_t x, uint32_t y,
-              uint32_t w, uint32_t h, uint32_t b, const char *label)
+              uint32_t w, uint32_t h, uint32_t b, const char *label,
+              PangoFontDescription *font_description)
 {
+    drwsurf_flip(ds);
+    struct drwbuf *d = ds->back_buffer;
+    drwsurf_damage(ds, x, y, w, h);
 
     cairo_save(d->cairo);
 
+    pango_layout_set_font_description(d->layout, font_description);
+
     cairo_set_source_rgba(
         d->cairo, color.bgra[2] / (double)255, color.bgra[1] / (double)255,
         color.bgra[0] / (double)255, color.bgra[3] / (double)255);
@@ -54,8 +156,12 @@ drw_draw_text(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
 }
 
 void
-drw_do_clear(struct drwsurf *d, uint32_t x, uint32_t y, uint32_t w, uint32_t h)
+drw_do_clear(struct drwsurf *ds, uint32_t x, uint32_t y, uint32_t w, uint32_t h)
 {
+    drwsurf_flip(ds);
+    struct drwbuf *d = ds->back_buffer;
+    drwsurf_damage(ds, x, y, w, h);
+
     cairo_save(d->cairo);
 
     cairo_set_operator(d->cairo, CAIRO_OPERATOR_CLEAR);
@@ -66,9 +172,13 @@ drw_do_clear(struct drwsurf *d, uint32_t x, uint32_t y, uint32_t w, uint32_t h)
 }
 
 void
-drw_do_rectangle(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
+drw_do_rectangle(struct drwsurf *ds, Color color, uint32_t x, uint32_t y,
-                 uint32_t w, uint32_t h, bool over)
+                 uint32_t w, uint32_t h, bool over, int rounding)
 {
+    drwsurf_flip(ds);
+    struct drwbuf *d = ds->back_buffer;
+    drwsurf_damage(ds, x, y, w, h);
+
     cairo_save(d->cairo);
 
     if (over) {
@@ -77,6 +187,28 @@ drw_do_rectangle(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
         cairo_set_operator(d->cairo, CAIRO_OPERATOR_SOURCE);
     }
 
+    if (rounding > 0) {
+        double radius = rounding / 1.0;
+        double degrees = M_PI / 180.0;
+
+        cairo_new_sub_path (d->cairo);
+        cairo_arc (d->cairo, x + w - radius, y + radius, radius, -90 * degrees, 0 * degrees);
+        cairo_arc (d->cairo, x + w - radius, y + h - radius, radius, 0 * degrees, 90 * degrees);
+        cairo_arc (d->cairo, x + radius, y + h - radius, radius, 90 * degrees, 180 * degrees);
+        cairo_arc (d->cairo, x + radius, y + radius, radius, 180 * degrees, 270 * degrees);
+        cairo_close_path (d->cairo);
+
+        cairo_set_source_rgba(
+          d->cairo, color.bgra[2] / (double)255, color.bgra[1] / (double)255, 
+          color.bgra[0] / (double)255, color.bgra[3] / (double)255);
+        cairo_fill (d->cairo);
+        cairo_set_source_rgba(d->cairo, 0, 0, 0, 0.9);
+        cairo_set_line_width(d->cairo, 1.0);
+        cairo_stroke(d->cairo);
+
+        cairo_restore(d->cairo);
+    }
+    else {
         cairo_rectangle(d->cairo, x, y, w, h);
         cairo_set_source_rgba(
             d->cairo, color.bgra[2] / (double)255, color.bgra[1] / (double)255,
@@ -84,60 +216,70 @@ drw_do_rectangle(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
         cairo_fill(d->cairo);
 
         cairo_restore(d->cairo);
+    }
 }
 
 void
 drw_fill_rectangle(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
-                   uint32_t w, uint32_t h)
+                   uint32_t w, uint32_t h, int rounding)
 {
-    drw_do_rectangle(d, color, x, y, w, h, false);
+    drw_do_rectangle(d, color, x, y, w, h, false, rounding);
 }
 
 void
 drw_over_rectangle(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
-                   uint32_t w, uint32_t h)
+                   uint32_t w, uint32_t h, int rounding)
 {
-    drw_do_rectangle(d, color, x, y, w, h, true);
+    drw_do_rectangle(d, color, x, y, w, h, true, rounding);
 }
 
 uint32_t
-setup_buffer(struct drwsurf *drwsurf)
+setup_buffer(struct drwsurf *drwsurf, struct drwbuf *drwbuf)
 {
+    int prev_size = drwbuf->size;
     int stride = drwsurf->width * 4;
-    drwsurf->size = stride * drwsurf->height;
+    drwbuf->size = stride * drwsurf->height;
 
-    int fd = allocate_shm_file(drwsurf->size);
+    int fd = allocate_shm_file(drwbuf->size);
     if (fd == -1) {
         return 1;
     }
 
-    drwsurf->pool_data =
+    if (drwbuf->pool_data)
-        mmap(NULL, drwsurf->size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+        munmap(drwbuf->pool_data, prev_size);
-    if (drwsurf->pool_data == MAP_FAILED) {
+    drwbuf->pool_data =
+        mmap(NULL, drwbuf->size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+    if (drwbuf->pool_data == MAP_FAILED) {
         close(fd);
         return 1;
     }
 
+    if (drwbuf->buf)
+        wl_buffer_destroy(drwbuf->buf);
     struct wl_shm_pool *pool =
-        wl_shm_create_pool(drwsurf->ctx->shm, fd, drwsurf->size);
+        wl_shm_create_pool(drwsurf->ctx->shm, fd, drwbuf->size);
-    drwsurf->buf =
+    drwbuf->buf =
         wl_shm_pool_create_buffer(pool, 0, drwsurf->width, drwsurf->height,
                                   stride, WL_SHM_FORMAT_ARGB8888);
     wl_shm_pool_destroy(pool);
     close(fd);
+    wl_buffer_add_listener(drwbuf->buf, &buffer_listener, drwsurf);
 
-    cairo_surface_t *s = cairo_image_surface_create_for_data(
+
-        drwsurf->pool_data, CAIRO_FORMAT_ARGB32, drwsurf->width,
+    if (drwbuf->cairo_surf)
+        cairo_surface_destroy(drwbuf->cairo_surf);
+    drwbuf->cairo_surf = cairo_image_surface_create_for_data(
+        drwbuf->pool_data, CAIRO_FORMAT_ARGB32, drwsurf->width,
         drwsurf->height, stride);
 
-    drwsurf->cairo = cairo_create(s);
+    if (drwbuf->cairo)
-    cairo_scale(drwsurf->cairo, drwsurf->scale, drwsurf->scale);
+        cairo_destroy(drwbuf->cairo);
-    cairo_set_antialias(drwsurf->cairo, CAIRO_ANTIALIAS_NONE);
+    drwbuf->cairo = cairo_create(drwbuf->cairo_surf);
-    drwsurf->layout = pango_cairo_create_layout(drwsurf->cairo);
+    cairo_scale(drwbuf->cairo, drwsurf->scale, drwsurf->scale);
-    pango_layout_set_font_description(drwsurf->layout,
+    cairo_set_antialias(drwbuf->cairo, CAIRO_ANTIALIAS_NONE);
-                                      drwsurf->ctx->font_description);
+    drwbuf->layout = pango_cairo_create_layout(drwbuf->cairo);
-    pango_layout_set_auto_dir(drwsurf->layout, false);
+    pango_layout_set_auto_dir(drwbuf->layout, false);
-    cairo_save(drwsurf->cairo);
+    cairo_save(drwbuf->cairo);
 
     return 0;
 }

drw.h

@@ -6,43 +6,54 @@
 
 struct drw {
 	struct wl_shm *shm;
-	PangoFontDescription *font_description;
+};
+struct drwbuf {
+	uint32_t size;
+	struct wl_buffer *buf;
+	cairo_surface_t *cairo_surf;
+	cairo_t *cairo;
+	PangoLayout *layout;
+	unsigned char *pool_data;
 };
 struct drwsurf {
-	uint32_t width, height, size;
+	uint32_t width, height;
 	double scale;
 
 	struct drw *ctx;
 	struct wl_surface *surf;
-	struct wl_buffer *buf;
 	struct wl_shm *shm;
-	unsigned char *pool_data;
+	struct wl_callback *frame_cb;
 
-	cairo_t *cairo;
+	cairo_region_t *damage, *backport_damage;
-	PangoLayout *layout;
+	bool attached;
+	bool released;
+
+	struct drwbuf *back_buffer;
+	struct drwbuf *display_buffer;
 };
 struct kbd;
 
 void drwsurf_resize(struct drwsurf *ds, uint32_t w, uint32_t h, double s);
-void drwsurf_flip(struct drwsurf *ds);
+void drwsurf_attach(struct drwsurf *ds);
 
 typedef union {
 	uint8_t bgra[4];
 	uint32_t color;
 } Color;
 
-void drw_do_clear(struct drwsurf *d, uint32_t x, uint32_t y,
+void drw_do_clear(struct drwsurf *ds, uint32_t x, uint32_t y,
-                      uint32_t w, uint32_t h);
-void drw_do_rectangle(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
-                      uint32_t w, uint32_t h, bool fill);
-void drw_fill_rectangle(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
-                        uint32_t w, uint32_t h);
-void drw_over_rectangle(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
                       uint32_t w, uint32_t h);
+void drw_do_rectangle(struct drwsurf *ds, Color color, uint32_t x, uint32_t y,
+                      uint32_t w, uint32_t h, bool fill, int rounding);
+void drw_fill_rectangle(struct drwsurf *ds, Color color, uint32_t x, uint32_t y,
+                        uint32_t w, uint32_t h, int rounding);
+void drw_over_rectangle(struct drwsurf *ds, Color color, uint32_t x, uint32_t y,
+                        uint32_t w, uint32_t h, int rounding);
 
-void drw_draw_text(struct drwsurf *d, Color color, uint32_t x, uint32_t y,
+void drw_draw_text(struct drwsurf *ds, Color color, uint32_t x, uint32_t y,
-                   uint32_t w, uint32_t h, uint32_t b, const char *label);
+                   uint32_t w, uint32_t h, uint32_t b, const char *label,
+                   PangoFontDescription *font_description);
 
-uint32_t setup_buffer(struct drwsurf *drwsurf);
+uint32_t setup_buffer(struct drwsurf *ds, struct drwbuf *db);
 
 #endif

keyboard.c

@@ -3,6 +3,7 @@
 #include <stddef.h>
 #include <stdio.h>
 #include <sys/mman.h>
+#include <ctype.h>
 #include "keyboard.h"
 #include "drw.h"
 #include "os-compatibility.h"
@@ -276,13 +277,23 @@ kbd_get_layer_index(struct kbd *kb, struct layout *l)
 void
 kbd_unpress_key(struct kbd *kb, uint32_t time)
 {
-    bool unlatch_shift = false;
+    bool unlatch_shift, unlatch_ctrl, unlatch_alt, unlatch_super, unlatch_altgr;
+    unlatch_shift = unlatch_ctrl = unlatch_alt = unlatch_super = unlatch_altgr = false;
 
     if (kb->last_press) {
         unlatch_shift = (kb->mods & Shift) == Shift;
+        unlatch_ctrl = (kb->mods & Ctrl) == Ctrl;
+        unlatch_alt = (kb->mods & Alt) == Alt;
+        unlatch_super = (kb->mods & Super) == Super;
+        unlatch_altgr = (kb->mods & AltGr) == AltGr;
 
-        if (unlatch_shift) {
+        if (unlatch_shift) kb->mods ^= Shift;
-            kb->mods ^= Shift;
+        if (unlatch_ctrl) kb->mods ^= Ctrl;
+        if (unlatch_alt) kb->mods ^= Alt;
+        if (unlatch_super) kb->mods ^= Super;
+        if (unlatch_altgr) kb->mods ^= AltGr;
+
+        if (unlatch_shift||unlatch_ctrl||unlatch_alt||unlatch_super||unlatch_altgr) {
             zwp_virtual_keyboard_v1_modifiers(kb->vkbd, kb->mods, 0, 0, 0);
         }
 
@@ -304,7 +315,7 @@ kbd_unpress_key(struct kbd *kb, uint32_t time)
         if (kb->compose >= 2) {
             kb->compose = 0;
             kbd_switch_layout(kb, kb->last_abc_layout, kb->last_abc_index);
-        } else if (unlatch_shift) {
+        } else if (unlatch_shift||unlatch_ctrl||unlatch_alt||unlatch_super||unlatch_altgr) {
             kbd_draw_layout(kb);
         } else {
             kbd_draw_key(kb, kb->last_press, Unpress);
@@ -326,10 +337,7 @@ kbd_release_key(struct kbd *kb, uint32_t time)
         kb->last_swipe = NULL;
     }
 
-    drwsurf_flip(kb->surf);
-
     kbd_clear_last_popup(kb);
-    drwsurf_flip(kb->popup_surf);
 }
 
 void
@@ -355,10 +363,7 @@ kbd_motion_key(struct kbd *kb, uint32_t time, uint32_t x, uint32_t y)
         kbd_unpress_key(kb, time);
     }
 
-    drwsurf_flip(kb->surf);
-
     kbd_clear_last_popup(kb);
-    drwsurf_flip(kb->popup_surf);
 }
 
 void
@@ -418,7 +423,7 @@ kbd_press_key(struct kbd *kb, struct key *k, uint32_t time)
         break;
     case Mod:
         kb->mods ^= k->code;
-        if (k->code == Shift) {
+        if ((k->code == Shift) || (k->code == CapsLock)) {
             kbd_draw_layout(kb);
         } else {
             if (kb->mods & k->code) {
@@ -490,9 +495,6 @@ kbd_press_key(struct kbd *kb, struct key *k, uint32_t time)
     default:
         break;
     }
-
-    drwsurf_flip(kb->surf);
-    drwsurf_flip(kb->popup_surf);
 }
 
 void
@@ -527,7 +529,8 @@ kbd_print_key_stdout(struct kbd *kb, struct key *k)
     }
 
     if (!handled) {
-        if ((kb->mods & Shift) || (kb->mods & CapsLock))
+        if ((kb->mods & Shift) || 
+            ((kb->mods & CapsLock) & (strlen(k->label) == 1 && isalpha(k->label[0]))))
             printf("%s", k->shift_label);
         else if (!(kb->mods & Ctrl) && !(kb->mods & Alt) && !(kb->mods & Super))
             printf("%s", k->label);
@@ -541,9 +544,6 @@ kbd_clear_last_popup(struct kbd *kb)
     if (kb->last_popup_w && kb->last_popup_h) {
         drw_do_clear(kb->popup_surf, kb->last_popup_x, kb->last_popup_y,
                      kb->last_popup_w, kb->last_popup_h);
-        wl_surface_damage(kb->popup_surf->surf, kb->last_popup_x,
-                          kb->last_popup_y, kb->last_popup_w, kb->last_popup_h);
-
         kb->last_popup_w = kb->last_popup_h = 0;
     }
 }
@@ -551,32 +551,31 @@ kbd_clear_last_popup(struct kbd *kb)
 void
 kbd_draw_key(struct kbd *kb, struct key *k, enum key_draw_type type)
 {
-    const char *label = (kb->mods & Shift) ? k->shift_label : k->label;
+    const char *label = ((kb->mods & Shift)||((kb->mods & CapsLock) && 
+        strlen(k->label) == 1 && isalpha(k->label[0]))) ? k->shift_label : k->label;
     if (kb->debug)
         fprintf(stderr, "Draw key +%d+%d %dx%d -> %s\n", k->x, k->y, k->w, k->h,
                 label);
-    struct clr_scheme *scheme =
+    struct clr_scheme *scheme = &kb->schemes[k->scheme];
-        (k->scheme == 0) ? &(kb->scheme) : &(kb->scheme1);
 
     switch (type) {
     case None:
     case Unpress:
         draw_inset(kb->surf, k->x, k->y, k->w, k->h, KBD_KEY_BORDER,
-                   scheme->fg);
+                   scheme->fg, scheme->rounding);
         break;
     case Press:
         draw_inset(kb->surf, k->x, k->y, k->w, k->h, KBD_KEY_BORDER,
-                   scheme->high);
+                   scheme->high, scheme->rounding);
         break;
     case Swipe:
         draw_over_inset(kb->surf, k->x, k->y, k->w, k->h, KBD_KEY_BORDER,
-                        scheme->swipe);
+                        scheme->swipe, scheme->rounding);
         break;
     }
 
     drw_draw_text(kb->surf, scheme->text, k->x, k->y, k->w, k->h,
-                  KBD_KEY_BORDER, label);
+                  KBD_KEY_BORDER, label, scheme->font_description);
-    wl_surface_damage(kb->surf->surf, k->x, k->y, k->w, k->h);
 
     if (type == Press || type == Unpress) {
         kbd_clear_last_popup(kb);
@@ -586,14 +585,13 @@ kbd_draw_key(struct kbd *kb, struct key *k, enum key_draw_type type)
         kb->last_popup_w = k->w;
         kb->last_popup_h = k->h;
 
-        drw_fill_rectangle(kb->popup_surf, kb->scheme.bg, k->x,
+        drw_fill_rectangle(kb->popup_surf, scheme->bg, k->x,
-                           kb->last_popup_y, k->w, k->h);
+                           kb->last_popup_y, k->w, k->h, scheme->rounding);
         draw_inset(kb->popup_surf, k->x, kb->last_popup_y, k->w, k->h,
-                   KBD_KEY_BORDER, scheme->high);
+                   KBD_KEY_BORDER, scheme->high, scheme->rounding);
         drw_draw_text(kb->popup_surf, scheme->text, k->x, kb->last_popup_y,
-                      k->w, k->h, KBD_KEY_BORDER, label);
+                      k->w, k->h, KBD_KEY_BORDER, label,
-        wl_surface_damage(kb->popup_surf->surf, k->x, kb->last_popup_y, k->w,
+                      scheme->font_description);
-                          k->h);
     }
 }
 
@@ -605,7 +603,7 @@ kbd_draw_layout(struct kbd *kb)
     if (kb->debug)
         fprintf(stderr, "Draw layout\n");
 
-    drw_fill_rectangle(d, kb->scheme.bg, 0, 0, kb->w, kb->h);
+    drw_fill_rectangle(d, kb->schemes[0].bg, 0, 0, kb->w, kb->h, 0);
 
     while (next_key->type != Last) {
         if ((next_key->type == Pad) || (next_key->type == EndRow)) {
@@ -620,7 +618,6 @@ kbd_draw_layout(struct kbd *kb)
         }
         next_key++;
     }
-    wl_surface_damage(d->surf, 0, 0, kb->w, kb->h);
 }
 
 void
@@ -647,17 +644,17 @@ kbd_resize(struct kbd *kb, struct layout *layouts, uint8_t layoutcount)
 
 void
 draw_inset(struct drwsurf *ds, uint32_t x, uint32_t y, uint32_t width,
-           uint32_t height, uint32_t border, Color color)
+           uint32_t height, uint32_t border, Color color, int rounding)
 {
     drw_fill_rectangle(ds, color, x + border, y + border, width - (border * 2),
-                       height - (border * 2));
+                       height - (border * 2), rounding);
 }
 void
 draw_over_inset(struct drwsurf *ds, uint32_t x, uint32_t y, uint32_t width,
-                uint32_t height, uint32_t border, Color color)
+                uint32_t height, uint32_t border, Color color, int rounding)
 {
     drw_over_rectangle(ds, color, x + border, y + border, width - (border * 2),
-                       height - (border * 2));
+                       height - (border * 2), rounding);
 }
 
 void

keyboard.h

@@ -54,6 +54,9 @@ struct clr_scheme {
 	Color high;
 	Color swipe;
 	Color text;
+	char *font;
+	int rounding;
+	PangoFontDescription *font_description;
 };
 
 struct key {
@@ -90,13 +93,13 @@ struct kbd {
 	bool debug;
 
 	struct layout *layout;
-	struct clr_scheme scheme;
+	struct clr_scheme *schemes;
-	struct clr_scheme scheme1;
 
 	bool print;
 	bool print_intersect;
 	uint32_t w, h;
-	double scale, pending_scale;
+	double scale;
+	double preferred_scale, preferred_fractional_scale;
 	bool landscape;
 	uint8_t mods;
 	uint8_t compose;
@@ -119,9 +122,9 @@ struct kbd {
 };
 
 void draw_inset(struct drwsurf *ds, uint32_t x, uint32_t y, uint32_t width,
-                uint32_t height, uint32_t border, Color color);
+                uint32_t height, uint32_t border, Color color, int rounding);
 void draw_over_inset(struct drwsurf *ds, uint32_t x, uint32_t y, uint32_t width,
-                     uint32_t height, uint32_t border, Color color);
+                     uint32_t height, uint32_t border, Color color, int rounding);
 
 void kbd_init(struct kbd *kb, struct layout *layouts,
               char *layer_names_list, char *landscape_layer_names_list);

layout.mobintl.h

@@ -1626,7 +1626,8 @@ static struct key keys_compose_cyr_tse[] = {
 
 static struct key keys_compose_cyr_g[] = {
   {"ѓ", "Ѓ", 1.0, Copy, 0x0453, 0, 0x0403},
-  {"", "", 9.0, Pad},
+  {"ґ", "Ґ", 1.0, Copy, 0x0491, 0, 0x0490},
+  {"", "", 8.0, Pad},
   {"", "", 0.0, EndRow},
   {"", "", 0.0, EndRow},
   {"⇧", "⇫", 1.5, Mod, Shift, .scheme = 1},

main.c

@@ -3,6 +3,7 @@
 #include "proto/xdg-shell-client-protocol.h"
 #include "proto/fractional-scale-v1-client-protocol.h"
 #include "proto/viewporter-client-protocol.h"
+#include <errno.h>
 #include <linux/input-event-codes.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -23,8 +24,11 @@
     fprintf(stderr, __VA_ARGS__);                                              \
     exit(1)
 
+/* array size */
+#define countof(x) (sizeof(x) / sizeof(*x))
+
 /* client state */
-static const char *namespace = "wlroots";
+static const char *namespace = "wvkbd";
 static struct wl_display *display;
 static struct wl_compositor *compositor;
 static struct wl_seat *seat;
@@ -42,6 +46,7 @@ static struct wp_fractional_scale_v1 *wfs_draw_surf;
 static struct wp_fractional_scale_manager_v1 *wfs_mgr;
 static struct wp_viewport *draw_surf_viewport, *popup_draw_surf_viewport;
 static struct wp_viewporter *viewporter;
+static bool popup_xdg_surface_configured;
 
 struct Output {
     uint32_t name;
@@ -57,10 +62,11 @@ static int wl_outputs_size;
 
 /* drawing */
 static struct drw draw_ctx;
+static struct drwbuf draw_surf_back_buffer, draw_surf_display_buffer, popup_draw_surf_back_buffer, popup_draw_surf_display_buffer;
 static struct drwsurf draw_surf, popup_draw_surf;
 
 /* layer surface parameters */
-static uint32_t layer = ZWLR_LAYER_SHELL_V1_LAYER_TOP;
+static uint32_t layer = ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY;
 static uint32_t anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM |
                          ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
                          ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
@@ -71,6 +77,7 @@ static int cur_x = -1, cur_y = -1;
 static bool cur_press = false;
 static struct kbd keyboard;
 static uint32_t height, normal_height, landscape_height;
+static int rounding = DEFAULT_ROUNDING;
 static bool hidden = false;
 
 /* event handler prototypes */
@@ -111,6 +118,8 @@ static void seat_handle_name(void *data, struct wl_seat *wl_seat,
 
 static void wl_surface_enter(void *data, struct wl_surface *wl_surface,
                              struct wl_output *wl_output);
+static void wl_surface_leave(void *data, struct wl_surface *wl_surface,
+                             struct wl_output *wl_output);
 
 static void handle_global(void *data, struct wl_registry *registry,
                           uint32_t name, const char *interface,
@@ -123,7 +132,8 @@ static void layer_surface_configure(void *data,
                                     uint32_t serial, uint32_t w, uint32_t h);
 static void layer_surface_closed(void *data,
                                  struct zwlr_layer_surface_v1 *surface);
-static void resize();
+static void flip_landscape();
+static void show();
 
 /* event handlers */
 static const struct wl_pointer_listener pointer_listener = {
@@ -151,6 +161,7 @@ static const struct wl_seat_listener seat_listener = {
 
 static const struct wl_surface_listener surface_listener = {
     .enter = wl_surface_enter,
+    .leave = wl_surface_leave,
 };
 
 static const struct wl_registry_listener registry_listener = {
@@ -183,6 +194,10 @@ wl_touch_down(void *data, struct wl_touch *wl_touch, uint32_t serial,
               uint32_t time, struct wl_surface *surface, int32_t id,
               wl_fixed_t x, wl_fixed_t y)
 {
+    if(!popup_xdg_surface_configured) {
+        return;
+    }
+
     struct key *next_key;
     uint32_t touch_x, touch_y;
 
@@ -205,6 +220,10 @@ void
 wl_touch_up(void *data, struct wl_touch *wl_touch, uint32_t serial,
             uint32_t time, int32_t id)
 {
+    if(!popup_xdg_surface_configured) {
+        return;
+    }
+
     kbd_release_key(&keyboard, time);
 }
 
@@ -212,6 +231,10 @@ void
 wl_touch_motion(void *data, struct wl_touch *wl_touch, uint32_t time,
                 int32_t id, wl_fixed_t x, wl_fixed_t y)
 {
+    if(!popup_xdg_surface_configured) {
+        return;
+    }
+
     uint32_t touch_x, touch_y;
 
     touch_x = wl_fixed_to_int(x);
@@ -260,6 +283,10 @@ void
 wl_pointer_motion(void *data, struct wl_pointer *wl_pointer, uint32_t time,
                   wl_fixed_t surface_x, wl_fixed_t surface_y)
 {
+    if(!popup_xdg_surface_configured) {
+        return;
+    }
+
     cur_x = wl_fixed_to_int(surface_x);
     cur_y = wl_fixed_to_int(surface_y);
 
@@ -272,6 +299,10 @@ void
 wl_pointer_button(void *data, struct wl_pointer *wl_pointer, uint32_t serial,
                   uint32_t time, uint32_t button, uint32_t state)
 {
+    if(!popup_xdg_surface_configured) {
+        return;
+    }
+
     struct key *next_key;
     cur_press = state == WL_POINTER_BUTTON_STATE_PRESSED;
 
@@ -297,8 +328,11 @@ void
 wl_pointer_axis(void *data, struct wl_pointer *wl_pointer, uint32_t time,
                 uint32_t axis, wl_fixed_t value)
 {
+    if(!popup_xdg_surface_configured) {
+        return;
+    }
+
     kbd_next_layer(&keyboard, NULL, (value >= 0));
-    drwsurf_flip(keyboard.surf);
 }
 
 void
@@ -338,16 +372,27 @@ void
 wl_surface_enter(void *data, struct wl_surface *wl_surface,
                  struct wl_output *wl_output)
 {
-    for (int i = 0; i < WL_OUTPUTS_LIMIT; i += 1) {
+    struct Output *old_output = current_output;
+    for (int i = 0; i < wl_outputs_size; i += 1) {
         if (wl_outputs[i].data == wl_output) {
             current_output = &wl_outputs[i];
             break;
         }
     }
+    if (current_output == old_output) {
+        return;
+    }
 
-    resize();
+    keyboard.preferred_scale = current_output->scale;
+    flip_landscape();
 }
 
+void
+wl_surface_leave(void *data, struct wl_surface *wl_surface,
+                 struct wl_output *wl_output) {
+}
+
+
 static void
 display_handle_geometry(void *data, struct wl_output *wl_output, int x, int y,
                         int physical_width, int physical_height, int subpixel,
@@ -366,7 +411,7 @@ display_handle_geometry(void *data, struct wl_output *wl_output, int x, int y,
     output->h = physical_height;
 
     if (current_output == output) {
-        resize();
+        flip_landscape();
     };
 }
 
@@ -382,7 +427,8 @@ display_handle_scale(void *data, struct wl_output *wl_output, int32_t scale)
     output->scale = scale;
 
     if (current_output == output) {
-        resize();
+        keyboard.preferred_scale = scale;
+        flip_landscape();
     };
 }
 
@@ -417,7 +463,7 @@ handle_global(void *data, struct wl_registry *registry, uint32_t name,
             wl_registry_bind(registry, name, &wl_compositor_interface, 3);
     } else if (strcmp(interface, wl_shm_interface.name) == 0) {
         draw_ctx.shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
-    } else if (strcmp(interface, "wl_output") == 0) {
+    } else if (strcmp(interface, wl_output_interface.name) == 0) {
         if (wl_outputs_size < WL_OUTPUTS_LIMIT) {
             struct Output *output = &wl_outputs[wl_outputs_size];
             output->data =
@@ -453,10 +499,10 @@ handle_global(void *data, struct wl_registry *registry, uint32_t name,
 void
 handle_global_remove(void *data, struct wl_registry *registry, uint32_t name)
 {
-    for (int i = 0; i < WL_OUTPUTS_LIMIT; i += 1) {
+    for (int i = 0; i < wl_outputs_size; i += 1) {
         if (wl_outputs[i].name == name) {
             wl_output_destroy(wl_outputs[i].data);
-            for (; i < WL_OUTPUTS_LIMIT - 1; i += 1) {
+            for (; i < wl_outputs_size - 1; i += 1) {
                 wl_outputs[i] = wl_outputs[i + 1];
             }
             wl_outputs_size -= 1;
@@ -470,7 +516,8 @@ xdg_popup_surface_configure(void *data, struct xdg_surface *xdg_surface,
                             uint32_t serial)
 {
     xdg_surface_ack_configure(xdg_surface, serial);
-    drwsurf_flip(&popup_draw_surf);
+    popup_xdg_surface_configured = true;
+    drwsurf_attach(&popup_draw_surf);
 }
 
 static const struct xdg_surface_listener xdg_popup_surface_listener = {
@@ -481,9 +528,6 @@ static void
 xdg_popup_configure(void *data, struct xdg_popup *xdg_popup, int32_t x,
                     int32_t y, int32_t width, int32_t height)
 {
-    kbd_resize(&keyboard, layouts, NumLayouts);
-
-    drwsurf_flip(&draw_surf);
 }
 
 static void
@@ -497,22 +541,28 @@ static const struct xdg_popup_listener xdg_popup_listener = {
 };
 
 static void
-wp_fractional_scale_prefered_scale(
+wp_fractional_scale_preferred_scale(
     void *data, struct wp_fractional_scale_v1 *wp_fractional_scale_v1,
     uint32_t scale)
 {
-    keyboard.pending_scale = (double)scale / 120;
+    keyboard.preferred_fractional_scale = (double)scale / 120;
 }
 
 static const struct wp_fractional_scale_v1_listener
     wp_fractional_scale_listener = {
-        .preferred_scale = wp_fractional_scale_prefered_scale,
+        .preferred_scale = wp_fractional_scale_preferred_scale,
 };
 
 void
-resize()
+flip_landscape()
 {
+    bool previous_landscape = keyboard.landscape;
+
+    if (current_output) {
         keyboard.landscape = current_output->w > current_output->h;
+    } else if (wl_outputs_size) {
+        keyboard.landscape = wl_outputs[0].w > wl_outputs[0].h;
+    }
 
     enum layout_id layer;
     if (keyboard.landscape) {
@@ -529,14 +579,25 @@ resize()
     keyboard.last_abc_layout = keyboard.layout;
     keyboard.last_abc_index = 0;
 
-    if (!wfs_mgr || !viewporter) {
+    if (layer_surface && previous_landscape != keyboard.landscape) {
-        keyboard.pending_scale = current_output->scale;
+        if (popup_xdg_popup) {
+            xdg_popup_destroy(popup_xdg_popup);
+            popup_xdg_popup = NULL;
+        }
+        if (popup_xdg_surface) {
+            xdg_surface_destroy(popup_xdg_surface);
+            popup_xdg_surface = NULL;
+        }
+        if (popup_draw_surf.surf) {
+            wl_surface_destroy(popup_draw_surf.surf);
+            popup_draw_surf.surf = NULL;
         }
 
-    if (layer_surface) {
+        zwlr_layer_surface_v1_destroy(layer_surface);
-        zwlr_layer_surface_v1_set_size(layer_surface, 0, height);
+        layer_surface = NULL;
-        zwlr_layer_surface_v1_set_exclusive_zone(layer_surface, height);
+        wl_surface_destroy(draw_surf.surf);
-        wl_surface_commit(draw_surf.surf);
+
+        show();
     }
 }
 
@@ -544,24 +605,20 @@ void
 layer_surface_configure(void *data, struct zwlr_layer_surface_v1 *surface,
                         uint32_t serial, uint32_t w, uint32_t h)
 {
-    if (keyboard.w != w || keyboard.h != h ||
+    double scale = keyboard.preferred_scale;
-        keyboard.scale != keyboard.pending_scale) {
+    if (keyboard.preferred_fractional_scale) {
+        scale = keyboard.preferred_fractional_scale;
+    }
+
+    if (keyboard.w != w || keyboard.h != h || keyboard.scale != scale ||
+        hidden) {
+
         keyboard.w = w;
         keyboard.h = h;
-        keyboard.scale = keyboard.pending_scale;
+        keyboard.scale = scale;
+        hidden = false;
 
         if (wfs_mgr && viewporter) {
-            if (!wfs_draw_surf) {
-                wfs_draw_surf =
-                    wp_fractional_scale_manager_v1_get_fractional_scale(
-                        wfs_mgr, draw_surf.surf);
-                wp_fractional_scale_v1_add_listener(
-                    wfs_draw_surf, &wp_fractional_scale_listener, NULL);
-            }
-            if (!draw_surf_viewport) {
-                draw_surf_viewport =
-                    wp_viewporter_get_viewport(viewporter, draw_surf.surf);
-            }
             wp_viewport_set_destination(draw_surf_viewport, keyboard.w,
                                         keyboard.h);
         } else {
@@ -586,6 +643,7 @@ layer_surface_configure(void *data, struct zwlr_layer_surface_v1 *surface,
         wl_surface_set_input_region(popup_draw_surf.surf, empty_region);
         popup_xdg_surface =
             xdg_wm_base_get_xdg_surface(wm_base, popup_draw_surf.surf);
+        popup_xdg_surface_configured = false;
         xdg_surface_add_listener(popup_xdg_surface, &xdg_popup_surface_listener,
                                  NULL);
         popup_xdg_popup = xdg_surface_get_popup(popup_xdg_surface, NULL,
@@ -603,9 +661,13 @@ layer_surface_configure(void *data, struct zwlr_layer_surface_v1 *surface,
         }
 
         wl_surface_commit(popup_draw_surf.surf);
-    }
 
         zwlr_layer_surface_v1_ack_configure(surface, serial);
+        kbd_resize(&keyboard, layouts, NumLayouts);
+        drwsurf_attach(&draw_surf);
+    } else {
+        zwlr_layer_surface_v1_ack_configure(surface, serial);
+    }
 }
 
 void
@@ -630,6 +692,7 @@ usage(char *argv0)
             "  -O          - Print intersected keys to standard output\n");
     fprintf(stderr, "  -H [int]    - Height in pixels\n");
     fprintf(stderr, "  -L [int]    - Landscape height in pixels\n");
+    fprintf(stderr, "  -R [int]    - Rounding radius in pixels\n");
     fprintf(stderr, "  --fn [font] - Set font (e.g: DejaVu Sans 20)\n");
     fprintf(stderr, "  --hidden    - Start hidden (send SIGUSR2 to show)\n");
     fprintf(
@@ -673,6 +736,15 @@ hide()
         return;
     }
 
+    if(wfs_draw_surf) {
+        wp_fractional_scale_v1_destroy(wfs_draw_surf);
+        wfs_draw_surf = NULL;
+    }
+    if(draw_surf_viewport) {
+        wp_viewport_destroy(draw_surf_viewport);
+        draw_surf_viewport = NULL;
+    }
+
     zwlr_layer_surface_v1_destroy(layer_surface);
     wl_surface_destroy(draw_surf.surf);
     layer_surface = NULL;
@@ -688,10 +760,25 @@ show()
 
     wl_display_sync(display);
 
+    flip_landscape();
+
     draw_surf.surf = wl_compositor_create_surface(compositor);
     wl_surface_add_listener(draw_surf.surf, &surface_listener, NULL);
+    if (wfs_mgr && viewporter) {
+        wfs_draw_surf = wp_fractional_scale_manager_v1_get_fractional_scale(
+            wfs_mgr, draw_surf.surf);
+        wp_fractional_scale_v1_add_listener(
+            wfs_draw_surf, &wp_fractional_scale_listener, NULL);
+        draw_surf_viewport =
+            wp_viewporter_get_viewport(viewporter, draw_surf.surf);
+    }
+
+    struct wl_output *current_output_data = NULL;
+    if (current_output)
+        current_output_data = current_output->data;
+
     layer_surface = zwlr_layer_shell_v1_get_layer_surface(
-        layer_shell, draw_surf.surf, NULL, layer, namespace);
+        layer_shell, draw_surf.surf, current_output_data, layer, namespace);
 
     zwlr_layer_surface_v1_set_size(layer_surface, 0, height);
     zwlr_layer_surface_v1_set_anchor(layer_surface, anchor);
@@ -700,8 +787,6 @@ show()
     zwlr_layer_surface_v1_add_listener(layer_surface, &layer_surface_listener,
                                        NULL);
     wl_surface_commit(draw_surf.surf);
-
-    hidden = false;
 }
 
 void
@@ -725,7 +810,7 @@ set_kbd_colors(uint8_t *bgra, char *hex)
     // bg, fg, text, high, swipe
     int length = strlen(hex);
     if (length == 6 || length == 8) {
-        char subhex[2];
+        char subhex[3] = { 0 };
         memcpy(subhex, hex, 2);
         bgra[2] = (int)strtol(subhex, NULL, 16);
         memcpy(subhex, hex + 2, 2);
@@ -744,9 +829,9 @@ main(int argc, char **argv)
 {
     /* parse command line arguments */
     char *layer_names_list = NULL, *landscape_layer_names_list = NULL;
-    const char *fc_font_pattern = NULL;
+    char *fc_font_pattern = NULL;
-    height = normal_height = KBD_PIXEL_HEIGHT;
+    height = landscape_height = KBD_PIXEL_LANDSCAPE_HEIGHT;
-    landscape_height = KBD_PIXEL_LANDSCAPE_HEIGHT;
+    normal_height = KBD_PIXEL_HEIGHT;
 
     char *tmp;
     if ((tmp = getenv("WVKBD_LAYERS")))
@@ -761,10 +846,11 @@ main(int argc, char **argv)
     /* keyboard settings */
     keyboard.layers = (enum layout_id *)&layers;
     keyboard.landscape_layers = (enum layout_id *)&landscape_layers;
-    keyboard.scheme = scheme;
+    keyboard.schemes = schemes;
+    keyboard.landscape = true;
     keyboard.layer_index = 0;
-    keyboard.scheme1 = scheme1;
+    keyboard.preferred_scale = 1;
-    keyboard.pending_scale = 1;
+    keyboard.preferred_fractional_scale = 0;
 
     uint8_t alpha = 0;
     bool alpha_defined = false;
@@ -799,7 +885,7 @@ main(int argc, char **argv)
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme.bg.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[0].bg.bgra, argv[++i]);
         } else if ((!strcmp(argv[i], "-alpha")) ||
                    (!strcmp(argv[i], "--alpha"))) {
             if (i >= argc - 1) {
@@ -813,68 +899,74 @@ main(int argc, char **argv)
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme.fg.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[0].fg.bgra, argv[++i]);
         } else if ((!strcmp(argv[i], "-fg-sp")) ||
                    (!strcmp(argv[i], "--fg-sp"))) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme1.fg.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[1].fg.bgra, argv[++i]);
         } else if ((!strcmp(argv[i], "-press")) ||
                    (!strcmp(argv[i], "--press"))) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme.high.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[0].high.bgra, argv[++i]);
         } else if ((!strcmp(argv[i], "-press-sp")) ||
                    (!strcmp(argv[i], "--press-sp"))) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme1.high.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[1].high.bgra, argv[++i]);
         } else if ((!strcmp(argv[i], "-swipe")) ||
                    (!strcmp(argv[i], "--swipe"))) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme.swipe.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[0].swipe.bgra, argv[++i]);
         } else if ((!strcmp(argv[i], "-swipe-sp")) ||
                    (!strcmp(argv[i], "--swipe-sp"))) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme1.swipe.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[1].swipe.bgra, argv[++i]);
         } else if ((!strcmp(argv[i], "-text")) ||
                    (!strcmp(argv[i], "--text"))) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme.text.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[0].text.bgra, argv[++i]);
         } else if ((!strcmp(argv[i], "-text-sp")) ||
                    (!strcmp(argv[i], "--text-sp"))) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            set_kbd_colors(keyboard.scheme1.text.bgra, argv[++i]);
+            set_kbd_colors(keyboard.schemes[1].text.bgra, argv[++i]);
         } else if (!strcmp(argv[i], "-H")) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            height = normal_height = atoi(argv[++i]);
+            normal_height = atoi(argv[++i]);
         } else if (!strcmp(argv[i], "-L")) {
             if (i >= argc - 1) {
                 usage(argv[0]);
                 exit(1);
             }
-            landscape_height = atoi(argv[++i]);
+            height = landscape_height = atoi(argv[++i]);
+        } else if (!strcmp(argv[i], "-R")) {
+            if (i >= argc - 1) {
+                usage(argv[0]);
+                exit(1);
+            }
+            rounding = atoi(argv[++i]);
         } else if (!strcmp(argv[i], "-D")) {
             keyboard.debug = true;
         } else if ((!strcmp(argv[i], "-fn")) || (!strcmp(argv[i], "--fn"))) {
@@ -902,16 +994,22 @@ main(int argc, char **argv)
     }
 
     if (alpha_defined) {
-        keyboard.scheme.bg.bgra[3] = alpha;
+        keyboard.schemes[0].bg.bgra[3] = alpha;
-        keyboard.scheme.fg.bgra[3] = alpha;
+        keyboard.schemes[0].fg.bgra[3] = alpha;
-        keyboard.scheme.high.bgra[3] = alpha;
+        keyboard.schemes[0].high.bgra[3] = alpha;
-        keyboard.scheme1.bg.bgra[3] = alpha;
+        keyboard.schemes[1].bg.bgra[3] = alpha;
-        keyboard.scheme1.fg.bgra[3] = alpha;
+        keyboard.schemes[1].fg.bgra[3] = alpha;
-        keyboard.scheme1.high.bgra[3] = alpha;
+        keyboard.schemes[1].high.bgra[3] = alpha;
     }
 
-    if (!fc_font_pattern) {
+    if (fc_font_pattern) {
-        fc_font_pattern = default_font;
+        for (i = 0; i < countof(schemes); i++)
+            schemes[i].font = fc_font_pattern;
+    }
+
+    if (rounding != DEFAULT_ROUNDING) {
+        for (i = 0; i < countof(schemes); i++)
+            schemes[i].rounding = rounding;
     }
 
     display = wl_display_connect(NULL);
@@ -920,7 +1018,11 @@ main(int argc, char **argv)
     }
 
     draw_surf.ctx = &draw_ctx;
+    draw_surf.back_buffer = &draw_surf_back_buffer;
+    draw_surf.display_buffer = &draw_surf_display_buffer;
     popup_draw_surf.ctx = &draw_ctx;
+    popup_draw_surf.back_buffer = &popup_draw_surf_back_buffer;
+    popup_draw_surf.display_buffer = &popup_draw_surf_display_buffer;
     keyboard.surf = &draw_surf;
     keyboard.popup_surf = &popup_draw_surf;
 
@@ -944,6 +1046,9 @@ main(int argc, char **argv)
         die("virtual_keyboard_manager not available\n");
     }
 
+    // A second round-trip to receive wl_outputs events
+    wl_display_roundtrip(display);
+
     empty_region = wl_compositor_create_region(compositor);
     popup_xdg_positioner = xdg_wm_base_create_positioner(wm_base);
 
@@ -956,8 +1061,10 @@ main(int argc, char **argv)
     kbd_init(&keyboard, (struct layout *)&layouts, layer_names_list,
              landscape_layer_names_list);
 
-    draw_ctx.font_description =
+    for (i = 0; i < countof(schemes); i++) {
-        pango_font_description_from_string(fc_font_pattern);
+        schemes[i].font_description =
+            pango_font_description_from_string(schemes[i].font);
+    }
 
     if (!hidden)
         show();
@@ -994,6 +1101,12 @@ main(int argc, char **argv)
 
         if (fds[WAYLAND_FD].revents & POLLIN)
             wl_display_dispatch(display);
+        if (fds[WAYLAND_FD].revents & POLLERR) {
+            die("Exceptional condition on wayland socket.\n");
+        }
+        if (fds[WAYLAND_FD].revents & POLLHUP) {
+            die("Wayland socket has been disconnected.\n");
+        }
 
         if (fds[SIGNAL_FD].revents & POLLIN) {
             struct signalfd_siginfo si;
@@ -1011,8 +1124,10 @@ main(int argc, char **argv)
         }
     }
 
-    if (fc_font_pattern != default_font) {
+    if (fc_font_pattern) {
         free((void *)fc_font_pattern);
+        for (i = 0; i < countof(schemes); i++)
+            schemes[i].font = NULL;
     }
 
     return 0;

wvkbd.1

@@ -1,76 +0,0 @@
-.TH "wvkbd" "1" "2022-03-12"
-.P
-.SH NAME
-.P
-wvkbd - on-screen keyboard for wlroots
-.P
-.SH SYNOPSIS
-.P
-wvkbd-mobintl [OPTION]...
-.P
-.SH DESCRIPTION
-.P
-wvkbd is an on-screen keyboard for wlroots that sucks less.
-.P
-.SH OPTIONS
-.P
-\fB-D\fR
-.RS 4
-enable debug
-.P
-.RE
-\fB-o\fR
-.RS 4
-print pressed keys to standard output
-.P
-.RE
-\fB-O\fR
-.RS 4
-print intersected keys to standard output
-.P
-.RE
-\fB-l\fR
-.RS 4
-comma separated list of layers
-.P
-.RE
-\fB--landscape-layers\fR
-.RS 4
-comma separated list of layers used in landscape mode
-.P
-.RE
-\fB-H\fR \fIPX\fR
-.RS 4
-height in pixels
-.P
-.RE
-\fB-L\fR \fIPX\fR
-.RS 4
-landscape height in pixels
-.P
-.RE
-\fB--fn\fR \fIFONT\fR
-.RS 4
-set font (e.g: DejaVu Sans 20)
-.P
-.RE
-\fB--hidden\fR
-.RS 4
-start hidden (send SIGUSR2 to show, SIGUSR1 to hide, SIGRTMIN to toggle)
-.P
-.RE
-\fB-v\fR, \fB--version\fR
-.RS 4
-print version
-.P
-.RE
-\fB-h\fR, \fB--help\fR
-.RS 4
-show help
-.P
-.RE
-.SH AUTHORS
-.P
-Created by John Sullivan <jsullivan@csumb.edu>, maintained by the Sxmo project in
-collaboration with other open source contributors. For more information about wvkbd development, see
-<https://git.sr.ht/~proycon/wvkbd> or <https://github.com/jjsullivan5196/wvkbd>.

wvkbd.1.scd

@@ -0,0 +1,129 @@
+wvkbd(1)
+
+# NAME
+
+wvkbd - on-screen virtual keyboard for wayland compositors using wlroots
+
+# SYNOPSIS
+
+wvkbd-mobintl [OPTIONS]...
+
+*NOTE*: Your binary may have a different suffix depending on which layout you compiled.
+
+# DESCRIPTION
+
+This project aims to deliver a minimal but practically usable implementation of
+a wlroots on-screen keyboard in legible C. This will _only_ be a keyboard, not
+a feedback buzzer, led blinker, or anything that requires more than what's
+needed to input text quickly. The end product should be a static codebase that
+can be patched to add new features.
+
+## OPTIONS
+
+*-D*
+	enable debug mode.
+
+*-o*
+	print pressed keys to standard output.
+
+*-O*
+	print intersected keys to standard output.
+
+*-l* _layers_
+	comma separated list of layers in vertical/portrait mode.
+
+*--landscape-layers* _layers_
+	comma separated list of layers used in horizontal/landscape mode.
+
+*--list-layers*
+	prints a list of all available layers.
+
+*-H* _pixels_
+	Height of the keyboard in pixels, for vertical/portrait mode.
+
+*-L* _pixels_
+	Height of the keyboard in pixels, for horizontal/landscape mode
+
+*--fn* _font_
+	set font and size (e.g. DejaVu Sans 20)
+
+*--hidden*
+	Start hidden (send SIGUSR2 to show).
+
+*--alpha* _int_
+	Set alpha value (i.e. transparency) for all colors [0-255]
+	
+*--bg* _rrggbb|aa_ 
+	Set color of background
+
+*--fg* _rrggbb|aa_       
+	Set color of keys
+
+*--fg-sp* _rrggbb|aa_       
+	Set color of special keys
+
+*--press* _rrggbb|aa_       
+	Set color of pressed keys
+
+*--press-sp* _rrggbb|aa_       
+	Set color of pressed special keys
+
+*--swipe* _rrggbb|aa_       
+	Set color of swiped keys
+
+*--swipe-sp* _rrggbb|aa_       
+	Set color of swiped special keys
+
+*--text* _rrggbb|aa_       
+	Set color text on keys
+
+*--text-sp* _rrggbb|aa_       
+	Set color text on special keys
+
+*--version*
+	Print version information
+
+*-h*, *--help*
+	Print usage help 
+
+
+# SIGNALS
+
+You can send signals to wvkbd to hide/show it (e.g. using _kill_(1) with _-s_):
+
+*SIGUSR1*
+	Hide the keyboard.
+
+*SIGUSR2*
+	Show the keyboard
+
+*SIGRTMIN*
+	Toggle visibility
+
+# COMPOSE BUTTON
+
+The default mobile international layout features a Compose button (*Cmp*)
+which, when combined with another key, opens up a layout that offers variants
+for that key. This is similar to functionality that other keyboards implemented
+using a *long press* (wvkbd has no such notion, holding a key will repeat
+it like on a physical keyboard).
+
+For example, press Cmp + a to access variants with diacritics like á,à,â,ä, etc.. 
+
+Most layouts also feature the following that are less obvious:
+
+- Press Cmp and . to access more punctuation
+- Press Cmp and - or , to access 'mathematical' symbols (+,-,=,etc)
+- Press Cmp and ' or 0 or 9 to access more brackets and quotes
+- Press Cmp and q to access emojis
+
+Last, but not least, pressing Cmp + space or Cmp + ⌨  or Cmp + Abc opens up an
+index that allows you to immediately jump to any layout by name, even layouts
+not explicitly added to your layers on startup.
+
+# AUTHORS
+
+Created by John Sullivan <jsullivan@csumb.edu>, maintained by the Sxmo project
+<https://sxmo.org> in collaboration with other open source contributors. For
+more information about wvkbd development, see <https://git.sr.ht/~proycon/wvkbd>
+or <https://github.com/jjsullivan5196/wvkbd>.