wlt: toolkit: add helpers to create/manage selections
[platform/upstream/kmscon.git] / src / wlt_toolkit.c
index 4f73c3e..e23fc33 100644 (file)
 #include <xkbcommon/xkbcommon.h>
 #include "eloop.h"
 #include "log.h"
+#include "shl_array.h"
 #include "shl_dlist.h"
 #include "shl_hook.h"
+#include "shl_misc.h"
 #include "tsm_vte.h"
 #include "wlt_toolkit.h"
 
@@ -57,6 +59,13 @@ enum {
        STATE_HUP,
 };
 
+struct data_offer {
+       unsigned long ref;
+       struct wl_data_offer *w_offer;
+       struct wlt_display *disp;
+       struct shl_array *types;
+};
+
 struct wlt_display {
        unsigned long ref;
        struct ev_eloop *eloop;
@@ -91,6 +100,11 @@ struct wlt_display {
        struct wlt_window *keyboard_focus;
        struct ev_timer *repeat_timer;
        uint32_t repeat_sym;
+
+       struct wl_data_device_manager *w_manager;
+       struct wl_data_device *w_data_dev;
+       struct data_offer *drag_offer;
+       struct data_offer *selection_offer;
 };
 
 struct wlt_window {
@@ -118,6 +132,7 @@ struct wlt_window {
        unsigned int saved_height;
        unsigned int resize_edges;
        bool maximized;
+       bool fullscreen;
        struct wlt_shm_buffer buffer;
        struct wl_callback *w_frame;
 
@@ -617,29 +632,6 @@ static void keyboard_leave(void *data, struct wl_keyboard *keyboard,
        ev_timer_update(disp->repeat_timer, NULL);
 }
 
-static unsigned int get_effective_modmask(struct xkb_state *state)
-{
-       unsigned int mods = 0;
-
-       if (xkb_state_mod_name_is_active(state, XKB_MOD_NAME_SHIFT,
-                                               XKB_STATE_EFFECTIVE))
-               mods |= TSM_SHIFT_MASK;
-       if (xkb_state_mod_name_is_active(state, XKB_MOD_NAME_CAPS,
-                                               XKB_STATE_EFFECTIVE))
-               mods |= TSM_LOCK_MASK;
-       if (xkb_state_mod_name_is_active(state, XKB_MOD_NAME_CTRL,
-                                               XKB_STATE_EFFECTIVE))
-               mods |= TSM_CONTROL_MASK;
-       if (xkb_state_mod_name_is_active(state, XKB_MOD_NAME_ALT,
-                                               XKB_STATE_EFFECTIVE))
-               mods |= TSM_MOD1_MASK;
-       if (xkb_state_mod_name_is_active(state, XKB_MOD_NAME_LOGO,
-                                               XKB_STATE_EFFECTIVE))
-               mods |= TSM_MOD4_MASK;
-
-       return mods;
-}
-
 static void keyboard_key(void *data, struct wl_keyboard *keyboard,
                         uint32_t serial, uint32_t time, uint32_t key,
                         uint32_t state_w)
@@ -654,6 +646,7 @@ static void keyboard_key(void *data, struct wl_keyboard *keyboard,
        struct shl_dlist *iter;
        struct wlt_widget *widget;
        struct itimerspec spec;
+       bool handled;
 
        disp->last_serial = serial;
        if (!disp->xkb_state)
@@ -663,17 +656,20 @@ static void keyboard_key(void *data, struct wl_keyboard *keyboard,
        if (!wnd)
                return;
 
-       mask = get_effective_modmask(disp->xkb_state);
+       mask = shl_get_xkb_mods(disp->xkb_state);
        num_syms = xkb_key_get_syms(disp->xkb_state, code, &syms);
        sym = XKB_KEY_NoSymbol;
        if (num_syms == 1)
                sym = syms[0];
 
+       handled = false;
        shl_dlist_for_each(iter, &wnd->widget_list) {
                widget = shl_dlist_entry(iter, struct wlt_widget, list);
-               if (widget->keyboard_cb)
-                       widget->keyboard_cb(widget, mask, sym, state,
-                                           widget->data);
+               if (widget->keyboard_cb) {
+                       if (widget->keyboard_cb(widget, mask, sym, state,
+                                               handled, widget->data))
+                               handled = true;
+               }
        }
 
        if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
@@ -696,17 +692,21 @@ static void repeat_event(struct ev_timer *timer, uint64_t num, void *data)
        struct wlt_widget *widget;
        struct shl_dlist *iter;
        unsigned int mask;
+       bool handled;
 
        if (!wnd)
                return;
 
-       mask = get_effective_modmask(disp->xkb_state);
+       mask = shl_get_xkb_mods(disp->xkb_state);
+       handled = false;
        shl_dlist_for_each(iter, &wnd->widget_list) {
                widget = shl_dlist_entry(iter, struct wlt_widget, list);
-               if (widget->keyboard_cb)
-                       widget->keyboard_cb(widget, mask, disp->repeat_sym,
-                                           WL_KEYBOARD_KEY_STATE_PRESSED,
-                                           widget->data);
+               if (widget->keyboard_cb) {
+                       if (widget->keyboard_cb(widget, mask, disp->repeat_sym,
+                                               WL_KEYBOARD_KEY_STATE_PRESSED,
+                                               handled, widget->data))
+                               handled = true;
+               }
        }
 }
 
@@ -733,6 +733,202 @@ static const struct wl_keyboard_listener keyboard_listener = {
        .modifiers = keyboard_modifiers,
 };
 
+static void data_offer_unref(struct data_offer *offer)
+{
+       unsigned int i, len;
+
+       if (!offer || !offer->ref || --offer->ref)
+               return;
+
+       len = shl_array_get_length(offer->types);
+       for (i = 0; i < len; ++i)
+               free(*SHL_ARRAY_AT(offer->types, char*, i));
+       shl_array_free(offer->types);
+       wl_data_offer_destroy(offer->w_offer);
+       free(offer);
+}
+
+static void data_offer_offer(void *data, struct wl_data_offer *w_offer,
+                            const char *type)
+{
+       char *tmp;
+       int ret;
+       struct data_offer *offer = wl_data_offer_get_user_data(w_offer);
+
+       tmp = strdup(type);
+       if (!tmp)
+               return;
+
+       ret = shl_array_push(offer->types, &tmp);
+       if (ret) {
+               free(tmp);
+               return;
+       }
+}
+
+static const struct wl_data_offer_listener data_offer_listener = {
+       .offer = data_offer_offer,
+};
+
+static void data_dev_data_offer(void *data, struct wl_data_device *w_dev,
+                               struct wl_data_offer *w_offer)
+{
+       struct data_offer *offer;
+       struct wlt_display *disp = data;
+       int ret;
+
+       offer = malloc(sizeof(*offer));
+       if (!offer) {
+               wl_data_offer_destroy(w_offer);
+               return;
+       }
+       memset(offer, 0, sizeof(*offer));
+       offer->ref = 1;
+       offer->w_offer = w_offer;
+       offer->disp = disp;
+
+       ret = shl_array_new(&offer->types, sizeof(char*), 4);
+       if (ret) {
+               wl_data_offer_destroy(w_offer);
+               free(offer);
+               return;
+       }
+
+       wl_data_offer_add_listener(w_offer, &data_offer_listener, offer);
+       wl_data_offer_set_user_data(w_offer, offer);
+}
+
+static void data_dev_enter(void *data, struct wl_data_device *w_dev,
+                          uint32_t serial, struct wl_surface *w_surface,
+                          wl_fixed_t x, wl_fixed_t y,
+                          struct wl_data_offer *w_offer)
+{
+       struct wlt_display *disp = data;
+
+       if (disp->drag_offer) {
+               data_offer_unref(disp->drag_offer);
+               disp->drag_offer = NULL;
+       }
+
+       if (!w_offer)
+               return;
+
+       disp->drag_offer = wl_data_offer_get_user_data(w_offer);
+}
+
+static void data_dev_leave(void *data, struct wl_data_device *w_dev)
+{
+       struct wlt_display *disp = data;
+
+       if (disp->drag_offer) {
+               data_offer_unref(disp->drag_offer);
+               disp->drag_offer = NULL;
+       }
+}
+
+static void data_dev_motion(void *data, struct wl_data_device *w_dev,
+                           uint32_t time, wl_fixed_t x, wl_fixed_t y)
+{
+}
+
+static void data_dev_drop(void *data, struct wl_data_device *w_dev)
+{
+}
+
+static void data_dev_selection(void *data, struct wl_data_device *w_dev,
+                              struct wl_data_offer *w_offer)
+{
+       struct wlt_display *disp = data;
+
+       if (disp->selection_offer) {
+               data_offer_unref(disp->selection_offer);
+               disp->selection_offer = NULL;
+       }
+
+       if (!w_offer)
+               return;
+
+       disp->selection_offer = wl_data_offer_get_user_data(w_offer);
+}
+
+int wlt_display_get_selection_to_fd(struct wlt_display *disp, const char *mime,
+                                   int output_fd)
+{
+       unsigned int i, num;
+       struct data_offer *offer;
+
+       if (!disp || !mime)
+               return -EINVAL;
+       if (!disp->selection_offer)
+               return -ENOENT;
+
+       offer = disp->selection_offer;
+       num = shl_array_get_length(offer->types);
+       for (i = 0; i < num; ++i) {
+               if (!strcmp(mime, *SHL_ARRAY_AT(offer->types, char*, i)))
+                       break;
+       }
+
+       if (i == num)
+               return -EAGAIN;
+
+       wl_data_offer_receive(offer->w_offer, mime, output_fd);
+       return 0;
+}
+
+int wlt_display_get_selection_fd(struct wlt_display *disp, const char *mime)
+{
+       int p[2], ret;
+
+       if (pipe2(p, O_CLOEXEC | O_NONBLOCK))
+               return -EFAULT;
+
+       ret = wlt_display_get_selection_to_fd(disp, mime, p[1]);
+       close(p[1]);
+
+       if (ret) {
+               close(p[0]);
+               return ret;
+       }
+
+       return p[0];
+}
+
+int wlt_display_new_data_source(struct wlt_display *disp,
+                               struct wl_data_source **out)
+{
+       struct wl_data_source *src;
+
+       if (!disp)
+               return -EINVAL;
+
+       src = wl_data_device_manager_create_data_source(disp->w_manager);
+       if (!src)
+               return -EFAULT;
+
+       *out = src;
+       return 0;
+}
+
+void wlt_display_set_selection(struct wlt_display *disp,
+                              struct wl_data_source *selection)
+{
+       if (!disp)
+               return;
+
+       wl_data_device_set_selection(disp->w_data_dev, selection,
+                                    disp->last_serial);
+}
+
+static const struct wl_data_device_listener data_dev_listener = {
+       .data_offer = data_dev_data_offer,
+       .enter = data_dev_enter,
+       .leave = data_dev_leave,
+       .motion = data_dev_motion,
+       .drop = data_dev_drop,
+       .selection = data_dev_selection,
+};
+
 static void check_ready(struct wlt_display *disp)
 {
        if (disp->state > STATE_INIT)
@@ -743,10 +939,17 @@ static void check_ready(struct wlt_display *disp)
            disp->w_shell &&
            disp->w_shm &&
            disp->w_pointer &&
-           disp->w_keyboard) {
+           disp->w_keyboard &&
+           disp->w_manager) {
                log_debug("wayland display initialized");
                load_cursors(disp);
 
+               disp->w_data_dev = wl_data_device_manager_get_data_device(
+                                               disp->w_manager, disp->w_seat);
+               wl_data_device_add_listener(disp->w_data_dev,
+                                           &data_dev_listener,
+                                           disp);
+
                disp->state = STATE_RUNNING;
                shl_hook_call(disp->listeners, disp, (void*)WLT_DISPLAY_READY);
        }
@@ -834,6 +1037,17 @@ static void dp_global(struct wl_display *dp, uint32_t id, const char *iface,
                        log_error("cannot bind wl_shm object");
                        return;
                }
+       } else if (!strcmp(iface, "wl_data_device_manager")) {
+               if (disp->w_manager) {
+                       log_error("global wl_data_device_manager advertised twice");
+                       return;
+               }
+               disp->w_manager = wl_display_bind(disp->dp, id,
+                                                 &wl_data_device_manager_interface);
+               if (!disp->w_manager) {
+                       log_error("cannot bind wl_data_device_manager_object");
+                       return;
+               }
        } else {
                log_debug("ignoring new unknown global %s", iface);
                return;
@@ -901,7 +1115,7 @@ int wlt_display_new(struct wlt_display **out,
                                                           dp_global,
                                                           disp);
        if (!disp->dp_listener) {
-               log_error("cannot add wayland global listener (%d)");
+               log_error("cannot add wayland global listener (%d)", errno);
                goto err_timer;
        }
 
@@ -985,9 +1199,15 @@ static void wlt_window_do_redraw(struct wlt_window *wnd,
 {
        struct shl_dlist *iter;
        struct wlt_widget *widget;
-       unsigned int x, y;
+       unsigned int x, y, flags;
        struct wlt_rect alloc;
 
+       flags = 0;
+       if (wnd->maximized)
+               flags |= WLT_WINDOW_MAXIMIZED;
+       if (wnd->fullscreen)
+               flags |= WLT_WINDOW_FULLSCREEN;
+
        alloc.x = 0;
        alloc.y = 0;
        alloc.width = wnd->buffer.width;
@@ -995,7 +1215,7 @@ static void wlt_window_do_redraw(struct wlt_window *wnd,
        shl_dlist_for_each(iter, &wnd->widget_list) {
                widget = shl_dlist_entry(iter, struct wlt_widget, list);
                if (widget->resize_cb)
-                       widget->resize_cb(widget, &alloc, widget->data);
+                       widget->resize_cb(widget, flags, &alloc, widget->data);
        }
 
        memset(wnd->buffer.data, 0,
@@ -1005,7 +1225,7 @@ static void wlt_window_do_redraw(struct wlt_window *wnd,
        shl_dlist_for_each(iter, &wnd->widget_list) {
                widget = shl_dlist_entry(iter, struct wlt_widget, list);
                if (widget->redraw_cb)
-                       widget->redraw_cb(widget, widget->data);
+                       widget->redraw_cb(widget, flags, widget->data);
        }
        wnd->skip_damage = false;
 
@@ -1028,7 +1248,7 @@ static void wlt_window_do_redraw(struct wlt_window *wnd,
 }
 
 static int resize_window(struct wlt_window *wnd, unsigned int width,
-                        unsigned int height)
+                        unsigned int height, bool force_redraw)
 {
        struct shl_dlist *iter;
        struct wlt_widget *widget;
@@ -1036,21 +1256,48 @@ static int resize_window(struct wlt_window *wnd, unsigned int width,
        struct wlt_pool *old_pool = NULL;
        size_t nsize;
        int ret;
-       unsigned int oldw, oldh;
+       unsigned int oldw, oldh, neww, newh, minw, minh, flags;
+
+       if (!width)
+               width = wnd->buffer.width;
+       if (!height)
+               height = wnd->buffer.height;
 
-       if (!wnd || !width || !height)
+       if (!width || !height)
                return -EINVAL;
 
+       flags = 0;
+       if (wnd->maximized)
+               flags |= WLT_WINDOW_MAXIMIZED;
+       if (wnd->fullscreen)
+               flags |= WLT_WINDOW_FULLSCREEN;
+
+       neww = 0;
+       newh = 0;
+       minw = 0;
+       minh = 0;
        shl_dlist_for_each(iter, &wnd->widget_list) {
                widget = shl_dlist_entry(iter, struct wlt_widget, list);
                if (widget->prepare_resize_cb)
-                       widget->prepare_resize_cb(widget, &width, &height,
+                       widget->prepare_resize_cb(widget,
+                                                 flags,
+                                                 width, height,
+                                                 &minw, &minh,
+                                                 &neww, &newh,
                                                  widget->data);
        }
 
+       if (neww)
+               width = neww;
+       if (newh)
+               height = newh;
+
        if (width == wnd->buffer.width &&
-           height == wnd->buffer.height)
+           height == wnd->buffer.height) {
+               if (force_redraw)
+                       wlt_window_do_redraw(wnd, width, height);
                return 0;
+       }
 
        oldw = wnd->buffer.width;
        oldh = wnd->buffer.height;
@@ -1116,14 +1363,17 @@ static const struct wl_callback_listener frame_callback_listener = {
 
 static void do_frame(struct wlt_window *wnd)
 {
+       bool force;
+
        wnd->idle_pending = false;
        ev_eloop_unregister_idle_cb(wnd->disp->eloop, idle_frame, wnd);
 
        if (wnd->need_resize) {
+               force = wnd->need_redraw;
                wnd->need_frame = true;
                wnd->need_resize = false;
                wnd->need_redraw = false;
-               resize_window(wnd, wnd->new_width, wnd->new_height);
+               resize_window(wnd, wnd->new_width, wnd->new_height, force);
        }
 
        if (wnd->need_redraw) {
@@ -1283,7 +1533,7 @@ int wlt_display_create_window(struct wlt_display *disp,
                                      &shell_surface_listener, wnd);
        wl_shell_surface_set_toplevel(wnd->w_shell_surface);
 
-       ret = resize_window(wnd, width, height);
+       ret = resize_window(wnd, width, height, true);
        if (ret)
                goto err_shell_surface;
 
@@ -1356,7 +1606,7 @@ int wlt_window_create_widget(struct wlt_window *wnd,
        widget->wnd = wnd;
        widget->data = data;
 
-       wlt_window_schedule_redraw(wnd);
+       wlt_window_set_size(wnd, wnd->buffer.width, wnd->buffer.height);
        shl_dlist_link_tail(&wnd->widget_list, &widget->list);
        *out = widget;
        return 0;
@@ -1448,7 +1698,7 @@ void wlt_window_resize(struct wlt_window *wnd, uint32_t edges)
 int wlt_window_set_size(struct wlt_window *wnd,
                        unsigned int width, unsigned int height)
 {
-       if (!wnd || !width || !height)
+       if (!wnd)
                return -EINVAL;
 
        wnd->new_width = width;
@@ -1491,17 +1741,50 @@ void wlt_window_toggle_maximize(struct wlt_window *wnd)
                return;
 
        if (wnd->maximized) {
-               wl_shell_surface_set_toplevel(wnd->w_shell_surface);
-               wlt_window_set_size(wnd, wnd->saved_width, wnd->saved_height);
+               if (!wnd->fullscreen) {
+                       wl_shell_surface_set_toplevel(wnd->w_shell_surface);
+                       wlt_window_set_size(wnd, wnd->saved_width,
+                                           wnd->saved_height);
+               }
        } else {
-               wnd->saved_width = wnd->buffer.width;
-               wnd->saved_height = wnd->buffer.height;
-               wl_shell_surface_set_maximized(wnd->w_shell_surface, NULL);
+               if (!wnd->fullscreen) {
+                       wnd->saved_width = wnd->buffer.width;
+                       wnd->saved_height = wnd->buffer.height;
+                       wl_shell_surface_set_maximized(wnd->w_shell_surface,
+                                                      NULL);
+               }
        }
 
        wnd->maximized = !wnd->maximized;
 }
 
+void wlt_window_toggle_fullscreen(struct wlt_window *wnd)
+{
+       if (!wnd)
+               return;
+
+       if (wnd->fullscreen) {
+               if (wnd->maximized) {
+                       wl_shell_surface_set_maximized(wnd->w_shell_surface,
+                                                      NULL);
+               } else {
+                       wl_shell_surface_set_toplevel(wnd->w_shell_surface);
+                       wlt_window_set_size(wnd, wnd->saved_width,
+                                           wnd->saved_height);
+               }
+       } else {
+               if (!wnd->maximized) {
+                       wnd->saved_width = wnd->buffer.width;
+                       wnd->saved_height = wnd->buffer.height;
+               }
+               wl_shell_surface_set_fullscreen(wnd->w_shell_surface,
+                               WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
+                               0, NULL);
+       }
+
+       wnd->fullscreen = !wnd->fullscreen;
+}
+
 struct ev_eloop *wlt_window_get_eloop(struct wlt_window *wnd)
 {
        if (!wnd)
@@ -1510,6 +1793,14 @@ struct ev_eloop *wlt_window_get_eloop(struct wlt_window *wnd)
        return wnd->disp->eloop;
 }
 
+struct wlt_display *wlt_window_get_display(struct wlt_window *wnd)
+{
+       if (!wnd)
+               return NULL;
+
+       return wnd->disp;
+}
+
 void wlt_widget_destroy(struct wlt_widget *widget)
 {
        if (!widget)