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wayland: implement shell surface move interface

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This implements the shell surface move interface so now it's possible to
use the mouse to interactively move wayland based windows around the
screen.
This commit is contained in:
Robert Bragg 2013-06-16 01:49:03 +01:00 committed by Jasper St. Pierre
parent 85e66f69fa
commit 2c901cc015
1 changed files with 181 additions and 1 deletions
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182
src/wayland/meta-wayland.c
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@ -43,6 +43,7 @@
#include "meta-window-actor-private.h"
#include "meta-wayland-seat.h"
#include "meta-wayland-keyboard.h"
#include "meta-wayland-pointer.h"
#include "meta-wayland-data-device.h"
#include "display-private.h"
#include "window-private.h"
@ -722,12 +723,191 @@ shell_surface_pong (struct wl_client *client,
{
}
/* TODO: consider adding this to window.c */
static void
meta_window_get_surface_rect (const MetaWindow *window,
MetaRectangle *rect)
{
if (window->frame)
{
MetaFrameBorders borders;
*rect = window->frame->rect;
meta_frame_calc_borders (window->frame, &borders);
}
else
*rect = window->rect;
}
typedef struct _MetaWaylandGrab
{
MetaWaylandPointerGrab grab;
MetaWaylandShellSurface *shell_surface;
struct wl_listener shell_surface_destroy_listener;
MetaWaylandPointer *pointer;
} MetaWaylandGrab;
typedef struct _MetaWaylandMoveGrab
{
MetaWaylandGrab base;
wl_fixed_t dx, dy;
} MetaWaylandMoveGrab;
static void
destroy_shell_surface_grab_listener (struct wl_listener *listener,
void *data)
{
MetaWaylandGrab *grab = wl_container_of (listener, grab,
shell_surface_destroy_listener);
grab->shell_surface = NULL;
/* XXX: Could we perhaps just stop the grab here so we don't have
* to consider grab->shell_surface becoming NULL in grab interface
* callbacks? */
}
typedef enum _GrabCursor
{
GRAB_CURSOR_MOVE,
} GrabCursor;
static void
grab_pointer (MetaWaylandGrab *grab,
const MetaWaylandPointerGrabInterface *interface,
MetaWaylandShellSurface *shell_surface,
MetaWaylandPointer *pointer,
GrabCursor cursor)
{
/* TODO: popup_grab_end (pointer); */
grab->grab.interface = interface;
grab->shell_surface = shell_surface;
grab->shell_surface_destroy_listener.notify =
destroy_shell_surface_grab_listener;
wl_resource_add_destroy_listener (shell_surface->resource,
&grab->shell_surface_destroy_listener);
grab->pointer = pointer;
grab->grab.focus = shell_surface->surface;
meta_wayland_pointer_start_grab (pointer, &grab->grab);
/* TODO: send_grab_cursor (cursor); */
/* XXX: In Weston there is a desktop shell protocol which has
* a set_grab_surface request that's used to specify the surface
* that's focused here.
*
* TODO: understand why.
*
* XXX: For now we just focus the surface directly associated with
* the grab.
*/
meta_wayland_pointer_set_focus (pointer,
grab->shell_surface->surface,
wl_fixed_from_int (0),
wl_fixed_from_int (0));
}
static void
release_pointer (MetaWaylandGrab *grab)
{
if (grab->shell_surface)
wl_list_remove (&grab->shell_surface_destroy_listener.link);
meta_wayland_pointer_end_grab (grab->pointer);
}
static void
noop_grab_focus (MetaWaylandPointerGrab *grab,
MetaWaylandSurface *surface,
wl_fixed_t x,
wl_fixed_t y)
{
grab->focus = NULL;
}
static void
move_grab_motion (MetaWaylandPointerGrab *grab,
uint32_t time,
wl_fixed_t x,
wl_fixed_t y)
{
MetaWaylandMoveGrab *move = (MetaWaylandMoveGrab *)grab;
MetaWaylandPointer *pointer = move->base.pointer;
MetaWaylandShellSurface *shell_surface = move->base.shell_surface;
if (!shell_surface)
return;
meta_window_move (shell_surface->surface->window,
TRUE,
wl_fixed_to_int (pointer->x + move->dx),
wl_fixed_to_int (pointer->y + move->dy));
}
static void
move_grab_button (MetaWaylandPointerGrab *pointer_grab,
uint32_t time,
uint32_t button,
uint32_t state_w)
{
MetaWaylandGrab *grab =
wl_container_of (pointer_grab, grab, grab);
MetaWaylandMoveGrab *move = (MetaWaylandMoveGrab *)grab;
MetaWaylandPointer *pointer = grab->pointer;
enum wl_pointer_button_state state = state_w;
if (pointer->button_count == 0 && state == WL_POINTER_BUTTON_STATE_RELEASED)
{
release_pointer (grab);
g_slice_free (MetaWaylandMoveGrab, move);
}
}
static const MetaWaylandPointerGrabInterface move_grab_interface = {
noop_grab_focus,
move_grab_motion,
move_grab_button,
};
static void
start_surface_move (MetaWaylandShellSurface *shell_surface,
MetaWaylandSeat *seat)
{
MetaWaylandMoveGrab *move;
MetaRectangle rect;
g_return_if_fail (shell_surface != NULL);
/* TODO: check if the surface is fullscreen when we support fullscreen */
move = g_slice_new (MetaWaylandMoveGrab);
meta_window_get_surface_rect (shell_surface->surface->window,
&rect);
move->dx = wl_fixed_from_int (rect.x) - seat->pointer.grab_x;
move->dy = wl_fixed_from_int (rect.y) - seat->pointer.grab_y;
grab_pointer (&move->base, &move_grab_interface, shell_surface,
&seat->pointer, GRAB_CURSOR_MOVE);
}
static void
shell_surface_move (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *seat,
struct wl_resource *seat_resource,
guint32 serial)
{
MetaWaylandSeat *seat = wl_resource_get_user_data (seat_resource);
MetaWaylandShellSurface *shell_surface = wl_resource_get_user_data (resource);
if (seat->pointer.button_count == 0 ||
seat->pointer.grab_serial != serial ||
seat->pointer.focus != shell_surface->surface)
return;
start_surface_move (shell_surface, seat);
}
static void