Do not expose drwsurf_flip

So that keyboard.c just need to draw things, and stop worring about
damaging.

.gitignore

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

drw.c

@@ -131,6 +131,7 @@ drw_draw_text(struct drwsurf *ds, Color color, uint32_t x, uint32_t y,
 {
     drwsurf_flip(ds);
     struct drwbuf *d = ds->back_buffer;
+    drwsurf_damage(ds, x, y, w, h);
 
     cairo_save(d->cairo);
 
@@ -159,6 +160,7 @@ 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);
 
@@ -175,6 +177,7 @@ drw_do_rectangle(struct drwsurf *ds, Color color, uint32_t x, uint32_t y,
 {
     drwsurf_flip(ds);
     struct drwbuf *d = ds->back_buffer;
+    drwsurf_damage(ds, x, y, w, h);
 
     cairo_save(d->cairo);
 

drw.h

@@ -33,10 +33,8 @@ struct drwsurf {
 };
 struct kbd;
 
-void drwsurf_damage(struct drwsurf *ds, uint32_t x, uint32_t y, uint32_t w, uint32_t h);
 void drwsurf_resize(struct drwsurf *ds, uint32_t w, uint32_t h, double s);
 void drwsurf_attach(struct drwsurf *ds);
-void drwsurf_flip(struct drwsurf *ds);
 
 typedef union {
 	uint8_t bgra[4];

keyboard.c

@@ -544,14 +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);
-        drwsurf_damage(
-            kb->popup_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;
     }
 }
@@ -584,7 +576,6 @@ kbd_draw_key(struct kbd *kb, struct key *k, enum key_draw_type type)
 
     drw_draw_text(kb->surf, scheme->text, k->x, k->y, k->w, k->h,
                   KBD_KEY_BORDER, label, scheme->font_description);
-    drwsurf_damage(kb->surf, k->x, k->y, k->w, k->h);
 
     if (type == Press || type == Unpress) {
         kbd_clear_last_popup(kb);
@@ -601,7 +592,6 @@ kbd_draw_key(struct kbd *kb, struct key *k, enum key_draw_type type)
         drw_draw_text(kb->popup_surf, scheme->text, k->x, kb->last_popup_y,
                       k->w, k->h, KBD_KEY_BORDER, label,
                       scheme->font_description);
-        drwsurf_damage(kb->popup_surf, k->x, kb->last_popup_y, k->w, k->h);
     }
 }
 
@@ -628,7 +618,6 @@ kbd_draw_layout(struct kbd *kb)
         }
         next_key++;
     }
-    drwsurf_damage(d, 0, 0, kb->w, kb->h);
 }
 
 void