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window: Update drag hotspot as new touches approach

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Any number of touches >= 3 starts a drag operation, but the
window jumped around as new touches joined. So recalculate
the touch drag area/hotspot and tiling mode as expected
as soon as touches enter/leave the drag op.
This commit is contained in:
Carlos Garnacho 2011-10-30 18:05:04 +01:00 committed by Jasper St. Pierre
parent de0d9e4da8
commit 2e8682d607
3 changed files with 159 additions and 46 deletions
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1
src/core/display-private.h
View File

@ -161,6 +161,7 @@ struct _MetaTouchInfo
gdouble initial_root_y;
guint notified : 1;
guint use_for_hotspot : 1;
};
struct _MetaDisplay

3
src/core/window-private.h
View File

@ -340,6 +340,9 @@ struct _MetaWindow
/* if TRUE, window didn't yet get the FocusIn for window->focus_keyboard */
guint expecting_focus_in : 1;
/* if TRUE, tiling mode is held regardless of newer touch updates */
guint touch_hold_tiling_mode : 1;
/* Keyboard currently owning the window focus, or NULL */
MetaDevice *focus_keyboard;

173
src/core/window.c
View File

@ -61,6 +61,10 @@
#include <X11/extensions/shape.h>
#endif
#define N_TOUCHES_FOR_GRAB 3
#define TOUCH_THRESHOLD 16
#define TILING_ZOOM_FACTOR 1.5
#include <X11/extensions/Xcomposite.h>
/* Windows that unmaximize to a size bigger than that fraction of the workarea
@ -8828,15 +8832,17 @@ update_move (MetaWindow *window,
y >= monitor->rect.y && y <= work_area.y)
window->tile_mode = META_TILE_MAXIMIZED;
else if (window->cur_touches &&
g_hash_table_size (window->cur_touches) == 3)
g_hash_table_size (window->cur_touches) >= N_TOUCHES_FOR_GRAB)
{
if (!window->touch_hold_tiling_mode)
{
window->tile_mode = META_TILE_NONE;
if (window->cur_touch_area_height >
window->initial_touch_area_height * 1.5)
window->initial_touch_area_height * TILING_ZOOM_FACTOR)
{
if (window->cur_touch_area_width >
window->initial_touch_area_width * 1.5 &&
window->initial_touch_area_width * TILING_ZOOM_FACTOR &&
meta_window_can_tile_maximized (window))
window->tile_mode = META_TILE_MAXIMIZED;
else if (meta_window_can_tile_side_by_side (window, device))
@ -8848,6 +8854,7 @@ update_move (MetaWindow *window,
}
}
}
}
else
window->tile_mode = META_TILE_NONE;
@ -11150,6 +11157,7 @@ typedef struct
gdouble top_left_y;
gdouble bottom_right_x;
gdouble bottom_right_y;
gboolean only_hotspot;
} BoundingRectCoords;
static void
@ -11160,6 +11168,10 @@ calculate_touch_bounding_rect (gpointer key,
BoundingRectCoords *bounding_rect = user_data;
MetaTouchInfo *touch_info = value;
if (bounding_rect->only_hotspot &&
!touch_info->use_for_hotspot)
return;
if (touch_info->root_x < bounding_rect->top_left_x)
bounding_rect->top_left_x = touch_info->root_x;
if (touch_info->root_x > bounding_rect->bottom_right_x)
@ -11171,6 +11183,55 @@ calculate_touch_bounding_rect (gpointer key,
bounding_rect->bottom_right_y = touch_info->root_y;
}
static gboolean
window_get_touch_area (MetaWindow *window,
gdouble *center_x,
gdouble *center_y,
gdouble *width,
gdouble *height)
{
if (g_hash_table_size (window->cur_touches) == 0)
return FALSE;
if (width || height)
{
BoundingRectCoords bounding_rect = { DBL_MAX, DBL_MAX,
DBL_MIN, DBL_MIN,
FALSE };
g_hash_table_foreach (window->cur_touches,
calculate_touch_bounding_rect,
&bounding_rect);
if (width)
*width = bounding_rect.bottom_right_x - bounding_rect.top_left_x;
if (height)
*height = bounding_rect.bottom_right_y - bounding_rect.top_left_y;
}
if (center_x || center_y)
{
gdouble w, h;
BoundingRectCoords bounding_rect = { DBL_MAX, DBL_MAX,
DBL_MIN, DBL_MIN,
TRUE };
g_hash_table_foreach (window->cur_touches,
calculate_touch_bounding_rect,
&bounding_rect);
w = bounding_rect.bottom_right_x - bounding_rect.top_left_x;
h = bounding_rect.bottom_right_y - bounding_rect.top_left_y;
if (center_x)
*center_x = bounding_rect.top_left_x + (w / 2);
if (center_y)
*center_y = bounding_rect.top_left_y + (h / 2);
}
return TRUE;
}
static void
notify_touch (MetaWindow *window,
MetaDevice *source,
@ -11246,6 +11307,8 @@ meta_window_update_touch (MetaWindow *window,
touch_info = g_slice_new (MetaTouchInfo);
touch_info->initial_root_x = root_x;
touch_info->initial_root_y = root_y;
touch_info->use_for_hotspot =
(g_hash_table_size (window->cur_touches) < N_TOUCHES_FOR_GRAB);
g_hash_table_insert (window->cur_touches,
GUINT_TO_POINTER (touch_id),
@ -11258,9 +11321,9 @@ meta_window_update_touch (MetaWindow *window,
n_touches = g_hash_table_size (window->cur_touches);
if (!new_touch && n_touches < 3 &&
(ABS (touch_info->initial_root_x - touch_info->root_x) >= 16 ||
ABS (touch_info->initial_root_y - touch_info->root_y) >= 16))
if (!new_touch && n_touches < N_TOUCHES_FOR_GRAB &&
(ABS (touch_info->initial_root_x - touch_info->root_x) >= TOUCH_THRESHOLD ||
ABS (touch_info->initial_root_y - touch_info->root_y) >= TOUCH_THRESHOLD))
{
/* There aren't yet enough touches on the window to trigger
* window moving, and one of the touches moved past the
@ -11271,13 +11334,11 @@ meta_window_update_touch (MetaWindow *window,
notify_touch_events (window, source, FALSE);
return TRUE;
}
else if (n_touches >= 3)
else if (n_touches >= N_TOUCHES_FOR_GRAB)
{
gdouble x, y, width, height;
BoundingRectCoords bounding_rect = { DBL_MAX, DBL_MAX,
DBL_MIN, DBL_MIN };
gdouble center_x, center_y, width, height;
if (n_touches == 3 && new_touch)
if (n_touches == N_TOUCHES_FOR_GRAB && new_touch)
{
/* Accept all touches for the move operation */
notify_touch_events (window, source, TRUE);
@ -11290,21 +11351,24 @@ meta_window_update_touch (MetaWindow *window,
touch_info->notified = TRUE;
}
g_hash_table_foreach (window->cur_touches,
calculate_touch_bounding_rect,
&bounding_rect);
/* Get x/y coordinates at the middle of the bounding box,
/* Set grab x/y coordinates at the middle of the bounding box,
* this will be the hotspot for the window moving operation
*/
width = bounding_rect.bottom_right_x - bounding_rect.top_left_x;
height = bounding_rect.bottom_right_y - bounding_rect.top_left_y;
x = bounding_rect.top_left_x + (width / 2);
y = bounding_rect.top_left_y + (height / 2);
window_get_touch_area (window, &center_x, &center_y, &width, &height);
window->cur_touch_area_width = width;
window->cur_touch_area_height = height;
if (new_touch)
{
if (n_touches == 3)
window->touch_hold_tiling_mode = FALSE;
/* (re)set initial bounding box
* so the new touch is included
*/
window->initial_touch_area_width = width;
window->initial_touch_area_height = height;
if (n_touches == N_TOUCHES_FOR_GRAB)
{
/* Start window move operation with the
* bounding rectangle center as the hotspot
@ -11317,18 +11381,37 @@ meta_window_update_touch (MetaWindow *window,
TRUE, FALSE,
1, 0,
evtime,
x, y);
center_x, center_y);
}
else
{
/* Update hotspot for grab */
window->cur_grab->grab_anchor_root_x = center_x;
window->cur_grab->grab_anchor_root_y = center_y;
window->cur_grab->grab_latest_motion_x = center_x;
window->cur_grab->grab_latest_motion_y = center_y;
meta_window_get_client_root_coords (window,
&window->cur_grab->grab_anchor_window_pos);
window->initial_touch_area_width = width;
window->initial_touch_area_height = height;
/* Update window, and tiling mode */
update_move (window, device, FALSE, center_x, center_y);
}
}
else if (window->cur_grab)
{
window->cur_touch_area_width = width;
window->cur_touch_area_height = height;
/* Unset tiling mode as the remaining touches moved past the threshold */
if (window->touch_hold_tiling_mode &&
((window->cur_touch_area_width >
(window->initial_touch_area_width + (2 * TOUCH_THRESHOLD))) ||
(window->cur_touch_area_height >
(window->initial_touch_area_height + (2 * TOUCH_THRESHOLD))) ||
(ABS (window->cur_grab->grab_anchor_root_x -
window->cur_grab->grab_latest_motion_x) > TOUCH_THRESHOLD) ||
(ABS (window->cur_grab->grab_anchor_root_y -
window->cur_grab->grab_latest_motion_y) > TOUCH_THRESHOLD)))
window->touch_hold_tiling_mode = FALSE;
update_move (window, device, FALSE, x, y);
update_move (window, device, FALSE, center_x, center_y);
}
return TRUE;
@ -11344,6 +11427,7 @@ meta_window_end_touch (MetaWindow *window,
MetaTouchInfo *info;
MetaDevice *source;
guint touch_id, n_touches;
MetaDevice *device;
Time evtime;
meta_input_event_get_touch_id (window->display, event, &touch_id);
@ -11365,17 +11449,42 @@ meta_window_end_touch (MetaWindow *window,
GUINT_TO_POINTER (touch_id));
n_touches = g_hash_table_size (window->cur_touches);
device = meta_input_event_get_device (window->display, event);
if (n_touches >= N_TOUCHES_FOR_GRAB)
{
gdouble center_x, center_y, width, height;
window_get_touch_area (window, &center_x, &center_y, &width, &height);
window->initial_touch_area_width = width;
window->initial_touch_area_height = height;
window->cur_touch_area_width = width;
window->cur_touch_area_height = height;
/* Update hotspot to the new bounding box center */
window->cur_grab->grab_anchor_root_x = center_x;
window->cur_grab->grab_anchor_root_y = center_y;
window->cur_grab->grab_latest_motion_x = center_x;
window->cur_grab->grab_latest_motion_y = center_y;
meta_window_get_client_root_coords (window,
&window->cur_grab->grab_anchor_window_pos);
/* Hold tiling mode until the remaining
* touches moved past some threshold
*/
window->touch_hold_tiling_mode = TRUE;
update_move (window, device, FALSE, center_x, center_y);
}
else if (n_touches == N_TOUCHES_FOR_GRAB - 1)
{
/* We just lost the last touch to hold the grab */
window->initial_touch_area_width = 0;
window->initial_touch_area_height = 0;
window->cur_touch_area_width = 0;
window->cur_touch_area_height = 0;
if (n_touches == 2)
{
MetaDevice *device;
device = meta_input_event_get_device (window->display, event);
meta_display_end_grab_op (window->display, device, evtime);
}
else if (n_touches == 0 &&