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widgetfocus: Use the same function to compare widgets

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... in horizontal/vertical direction.
This commit is contained in:
Timm Bäder 2017-02-10 21:50:41 +01:00
parent c9fc201f77
commit 4dd8d37191
1 changed files with 50 additions and 49 deletions
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99
gtk/gtkwidgetfocus.c
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@ -20,14 +20,40 @@
typedef struct _CompareInfo CompareInfo;
enum Axis {
HORIZONTAL = 0,
VERTICAL = 1
};
struct _CompareInfo
{
GtkWidget *widget;
int x;
int y;
gboolean reverse : 1;
guint reverse : 1;
guint axis : 1;
};
static inline void
get_axis_info (const GdkRectangle *rect,
int axis,
int *origin,
int *bounds)
{
if (axis == HORIZONTAL)
{
*origin = rect->x;
*bounds = rect->width;
}
else if (axis == VERTICAL)
{
*origin = rect->y;
*bounds = rect->height;
}
else
g_assert(FALSE);
}
/* Utility function, equivalent to g_list_reverse */
static void
reverse_ptr_array (GPtrArray *arr)
@ -156,61 +182,34 @@ old_focus_coords (GtkWidget *widget,
return FALSE;
}
static int
left_right_compare (gconstpointer a,
gconstpointer b,
gpointer user_data)
axis_compare (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
const GtkWidget *child1 = *((GtkWidget **)a);
const GtkWidget *child2 = *((GtkWidget **)b);
GdkRectangle allocation1;
GdkRectangle allocation2;
CompareInfo *compare = user_data;
int x1, x2;
int origin1, origin2;
int bounds1, bounds2;
get_allocation_coords (compare->widget, (GtkWidget *)child1, &allocation1);
get_allocation_coords (compare->widget, (GtkWidget *)child2, &allocation2);
get_allocation_coords (compare->widget, *((GtkWidget **)a), &allocation1);
get_allocation_coords (compare->widget, *((GtkWidget **)b), &allocation2);
x1 = allocation1.x + allocation1.width / 2;
x2 = allocation2.x + allocation2.width / 2;
get_axis_info (&allocation1, compare->axis, &origin1, &bounds1);
get_axis_info (&allocation2, compare->axis, &origin2, &bounds2);
if (x1 == x2)
origin1 = origin1 + (bounds1 / 2);
origin2 = origin2 + (bounds2 / 2);
if (origin1 == origin2)
{
int y1 = abs (allocation1.y + allocation1.height / 2 - compare->y);
int y2 = abs (allocation2.y + allocation2.height / 2 - compare->y);
/* Now use origin/bounds to compare the 2 widgets on the other axis */
get_axis_info (&allocation1, 1 - compare->axis, &origin1, &bounds1);
get_axis_info (&allocation2, 1 - compare->axis, &origin2, &bounds2);
if (compare->reverse)
return (y1 < y2) ? 1 : ((y1 == y2) ? 0 : -1);
else
return (y1 < y2) ? -1 : ((y1 == y2) ? 0 : 1);
}
else
return (x1 < x2) ? -1 : 1;
}
static int
up_down_compare (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
const GtkWidget *child1 = *((GtkWidget **)a);
const GtkWidget *child2 = *((GtkWidget **)b);
GdkRectangle allocation1;
GdkRectangle allocation2;
CompareInfo *compare = user_data;
int y1, y2;
get_allocation_coords (compare->widget, (GtkWidget *)child1, &allocation1);
get_allocation_coords (compare->widget, (GtkWidget *)child2, &allocation2);
y1 = allocation1.y + allocation1.height / 2;
y2 = allocation2.y + allocation2.height / 2;
if (y1 == y2)
{
int x1 = abs (allocation1.x + allocation1.width / 2 - compare->x);
int x2 = abs (allocation2.x + allocation2.width / 2 - compare->x);
int x1 = abs (origin1 + (bounds2 / 2) - compare->x);
int x2 = abs (origin2 + (bounds2 / 2) - compare->x);
if (compare->reverse)
return (x1 < x2) ? 1 : ((x1 == x2) ? 0 : -1);
@ -218,7 +217,7 @@ up_down_compare (gconstpointer a,
return (x1 < x2) ? -1 : ((x1 == x2) ? 0 : 1);
}
else
return (y1 < y2) ? -1 : 1;
return (origin1 < origin2) ? -1 : 1;
}
static void
@ -313,7 +312,8 @@ focus_sort_left_right (GtkWidget *widget,
}
g_ptr_array_sort_with_data (focus_order, left_right_compare, &compare_info);
compare_info.axis = HORIZONTAL;
g_ptr_array_sort_with_data (focus_order, axis_compare, &compare_info);
if (compare_info.reverse)
reverse_ptr_array (focus_order);
@ -410,7 +410,8 @@ focus_sort_up_down (GtkWidget *widget,
compare_info.y = (direction == GTK_DIR_DOWN) ? 0 : + allocation.height;
}
g_ptr_array_sort_with_data (focus_order, up_down_compare, &compare_info);
compare_info.axis = VERTICAL;
g_ptr_array_sort_with_data (focus_order, axis_compare, &compare_info);
if (compare_info.reverse)
reverse_ptr_array (focus_order);