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display: Do not require widget for snapping

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Just move everything needed into the SnapData struct.
This commit is contained in:
Benjamin Berg 2018-10-23 23:14:34 +02:00
parent 71eefdd8f6
commit 1ad0eaba7c
1 changed files with 52 additions and 50 deletions
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102
panels/display/cc-display-arrangement.c
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@ -59,6 +59,8 @@ enum SnapDirection {
};
struct SnapData {
cairo_matrix_t to_widget;
guint major_snap_distance;
gdouble dist_x;
gdouble dist_y;
gint mon_x;
@ -189,20 +191,20 @@ monitor_get_drawing_rect (CcDisplayArrangement *self,
static void
get_snap_distance (CcDisplayArrangement *self,
gint mon_x,
gint mon_y,
gint new_x,
gint new_y,
gdouble *dist_x,
gdouble *dist_y)
get_snap_distance (struct SnapData *snap_data,
gint mon_x,
gint mon_y,
gint new_x,
gint new_y,
gdouble *dist_x,
gdouble *dist_y)
{
gdouble local_dist_x, local_dist_y;
local_dist_x = ABS (mon_x - new_x);
local_dist_y = ABS (mon_y - new_y);
cairo_matrix_transform_distance (&self->to_widget, &local_dist_x, &local_dist_y);
cairo_matrix_transform_distance (&snap_data->to_widget, &local_dist_x, &local_dist_y);
if (dist_x)
*dist_x = local_dist_x;
@ -211,21 +213,20 @@ get_snap_distance (CcDisplayArrangement *self,
}
static void
maybe_update_snap (CcDisplayArrangement *self,
struct SnapData *snap_data,
gint mon_x,
gint mon_y,
gint new_x,
gint new_y,
enum SnapDirection snapped,
enum SnapDirection major_axis,
gint minor_unlimited)
maybe_update_snap (struct SnapData *snap_data,
gint mon_x,
gint mon_y,
gint new_x,
gint new_y,
enum SnapDirection snapped,
enum SnapDirection major_axis,
gint minor_unlimited)
{
enum SnapDirection update_snap = SNAP_DIR_NONE;
gdouble dist_x, dist_y;
gdouble dist;
get_snap_distance (self, mon_x, mon_y, new_x, new_y, &dist_x, &dist_y);
get_snap_distance (snap_data, mon_x, mon_y, new_x, new_y, &dist_x, &dist_y);
dist = MAX (dist_x, dist_y);
/* Snap by the variable max snap distance on the major axis, ensure the
@ -233,7 +234,7 @@ maybe_update_snap (CcDisplayArrangement *self,
switch (major_axis)
{
case SNAP_DIR_X:
if (dist_x > self->major_snap_distance)
if (dist_x > snap_data->major_snap_distance)
return;
if (dist_y > MINOR_SNAP_DISTANCE)
{
@ -245,7 +246,7 @@ maybe_update_snap (CcDisplayArrangement *self,
break;
case SNAP_DIR_Y:
if (dist_y > self->major_snap_distance)
if (dist_y > snap_data->major_snap_distance)
return;
if (dist_x > MINOR_SNAP_DISTANCE)
{
@ -317,10 +318,9 @@ maybe_update_snap (CcDisplayArrangement *self,
}
static void
find_best_snapping (CcDisplayArrangement *self,
CcDisplayConfig *config,
CcDisplayMonitor *snap_output,
struct SnapData *snap_data)
find_best_snapping (CcDisplayConfig *config,
CcDisplayMonitor *snap_output,
struct SnapData *snap_data)
{
GList *outputs, *l;
gint x1, y1, x2, y2;
@ -365,8 +365,8 @@ find_best_snapping (CcDisplayArrangement *self,
/* overlap on the X axis */
if (OVERLAP (x1, x2, _x1, _x2))
{
get_snap_distance (self, x1, y1, x1, top_snap_pos, NULL, &dist_y);
get_snap_distance (self, x1, y1, x1, bottom_snap_pos, NULL, &tmp);
get_snap_distance (snap_data, x1, y1, x1, top_snap_pos, NULL, &dist_y);
get_snap_distance (snap_data, x1, y1, x1, bottom_snap_pos, NULL, &tmp);
dist_y = MIN(dist_y, tmp);
}
@ -374,60 +374,60 @@ find_best_snapping (CcDisplayArrangement *self,
/* overlap on the Y axis */
if (OVERLAP (y1, y2, _y1, _y2))
{
get_snap_distance (self, x1, y1, left_snap_pos, y1, &dist_x, NULL);
get_snap_distance (self, x1, y1, right_snap_pos, y1, &tmp, NULL);
get_snap_distance (snap_data, x1, y1, left_snap_pos, y1, &dist_x, NULL);
get_snap_distance (snap_data, x1, y1, right_snap_pos, y1, &tmp, NULL);
dist_x = MIN(dist_x, tmp);
}
/* We only snap horizontally or vertically to an edge of the same monitor */
if (dist_y < dist_x)
{
maybe_update_snap (self, snap_data, x1, y1, x1, top_snap_pos, SNAP_DIR_Y, SNAP_DIR_Y, 0);
maybe_update_snap (self, snap_data, x1, y1, x1, bottom_snap_pos, SNAP_DIR_Y, SNAP_DIR_Y, 0);
maybe_update_snap (snap_data, x1, y1, x1, top_snap_pos, SNAP_DIR_Y, SNAP_DIR_Y, 0);
maybe_update_snap (snap_data, x1, y1, x1, bottom_snap_pos, SNAP_DIR_Y, SNAP_DIR_Y, 0);
}
else if (dist_x < 9999)
{
maybe_update_snap (self, snap_data, x1, y1, left_snap_pos, y1, SNAP_DIR_X, SNAP_DIR_X, 0);
maybe_update_snap (self, snap_data, x1, y1, right_snap_pos, y1, SNAP_DIR_X, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, left_snap_pos, y1, SNAP_DIR_X, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, right_snap_pos, y1, SNAP_DIR_X, SNAP_DIR_X, 0);
}
/* Left/right edge identical on the top */
maybe_update_snap (self, snap_data, x1, y1, _x1, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
maybe_update_snap (self, snap_data, x1, y1, _x2 - w, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
maybe_update_snap (snap_data, x1, y1, _x1, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
maybe_update_snap (snap_data, x1, y1, _x2 - w, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
/* Left/right edge identical on the bottom */
maybe_update_snap (self, snap_data, x1, y1, _x1, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
maybe_update_snap (self, snap_data, x1, y1, _x2 - w, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
maybe_update_snap (snap_data, x1, y1, _x1, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
maybe_update_snap (snap_data, x1, y1, _x2 - w, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
/* Top/bottom edge identical on the left */
maybe_update_snap (self, snap_data, x1, y1, left_snap_pos, _y1, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (self, snap_data, x1, y1, left_snap_pos, _y2 - h, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y1, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y2 - h, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
/* Top/bottom edge identical on the right */
maybe_update_snap (self, snap_data, x1, y1, right_snap_pos, _y1, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (self, snap_data, x1, y1, right_snap_pos, _y2 - h, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y1, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y2 - h, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
/* If snapping is infinite, then add snapping points with minimal overlap
* to prevent detachment.
* This is similar to the above but simply re-defines the snapping pos
* to have only minimal overlap */
if (self->major_snap_distance == G_MAXUINT)
if (snap_data->major_snap_distance == G_MAXUINT)
{
/* Hanging over the left/right edge on the top */
maybe_update_snap (self, snap_data, x1, y1, _x1 - w + MIN_OVERLAP, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 1);
maybe_update_snap (self, snap_data, x1, y1, _x2 - MIN_OVERLAP, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, -1);
maybe_update_snap (snap_data, x1, y1, _x1 - w + MIN_OVERLAP, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 1);
maybe_update_snap (snap_data, x1, y1, _x2 - MIN_OVERLAP, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, -1);
/* Left/right edge identical on the bottom */
maybe_update_snap (self, snap_data, x1, y1, _x1 - w + MIN_OVERLAP, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 1);
maybe_update_snap (self, snap_data, x1, y1, _x2 - MIN_OVERLAP, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, -1);
maybe_update_snap (snap_data, x1, y1, _x1 - w + MIN_OVERLAP, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 1);
maybe_update_snap (snap_data, x1, y1, _x2 - MIN_OVERLAP, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, -1);
/* Top/bottom edge identical on the left */
maybe_update_snap (self, snap_data, x1, y1, left_snap_pos, _y1 - h + MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, 1);
maybe_update_snap (self, snap_data, x1, y1, left_snap_pos, _y2 - MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, -1);
maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y1 - h + MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, 1);
maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y2 - MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, -1);
/* Top/bottom edge identical on the right */
maybe_update_snap (self, snap_data, x1, y1, right_snap_pos, _y1 - h + MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, 1);
maybe_update_snap (self, snap_data, x1, y1, right_snap_pos, _y2 - MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, -1);
maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y1 - h + MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, 1);
maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y2 - MIN_OVERLAP, SNAP_DIR_BOTH, SNAP_DIR_X, -1);
}
}
@ -793,10 +793,12 @@ cc_display_arrangement_motion_notify_event (GtkWidget *widget,
snap_data.mon_y = mon_y;
snap_data.dist_x = 0;
snap_data.dist_y = 0;
snap_data.to_widget = self->to_widget;
snap_data.major_snap_distance = self->major_snap_distance;
cc_display_monitor_set_position (self->selected_output, mon_x, mon_y);
find_best_snapping (self, self->config, self->selected_output, &snap_data);
find_best_snapping (self->config, self->selected_output, &snap_data);
cc_display_monitor_set_position (self->selected_output, snap_data.mon_x, snap_data.mon_y);