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listview: Support CSS border-spacing

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Hopefully the code can deal with gaps between the tiles.

We use gtk_list_item_manager_get_nearest_tile() when necessary.
This commit is contained in:
Benjamin Otte 2023-03-09 04:43:51 +01:00
parent 5583fa60c1
commit 196372f124
3 changed files with 107 additions and 55 deletions
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26
gtk/gtklistbase.c
View File

@ -23,6 +23,8 @@
#include "gtkadjustment.h"
#include "gtkbitset.h"
#include "gtkcssnodeprivate.h"
#include "gtkcsspositionvalueprivate.h"
#include "gtkdragsourceprivate.h"
#include "gtkdropcontrollermotion.h"
#include "gtkgesturedrag.h"
@ -1995,6 +1997,30 @@ gtk_list_base_get_orientation (GtkListBase *self)
return priv->orientation;
}
void
gtk_list_base_get_border_spacing (GtkListBase *self,
int *xspacing,
int *yspacing)
{
GtkCssStyle *style = gtk_css_node_get_style (gtk_widget_get_css_node (GTK_WIDGET (self)));
GtkCssValue *border_spacing = style->size->border_spacing;
if (gtk_list_base_get_orientation (self) == GTK_ORIENTATION_HORIZONTAL)
{
if (xspacing)
*xspacing = _gtk_css_position_value_get_y (border_spacing, 0);
if (yspacing)
*yspacing = _gtk_css_position_value_get_x (border_spacing, 0);
}
else
{
if (xspacing)
*xspacing = _gtk_css_position_value_get_x (border_spacing, 0);
if (yspacing)
*yspacing = _gtk_css_position_value_get_y (border_spacing, 0);
}
}
GtkListItemManager *
gtk_list_base_get_manager (GtkListBase *self)
{

3
gtk/gtklistbaseprivate.h
View File

@ -62,6 +62,9 @@ struct _GtkListBaseClass
GtkOrientation gtk_list_base_get_orientation (GtkListBase *self);
#define gtk_list_base_get_opposite_orientation(self) OPPOSITE_ORIENTATION(gtk_list_base_get_orientation(self))
guint gtk_list_base_get_focus_position (GtkListBase *self);
void gtk_list_base_get_border_spacing (GtkListBase *self,
int *xspacing,
int *yspacing);
GtkListItemManager * gtk_list_base_get_manager (GtkListBase *self);
GtkScrollablePolicy gtk_list_base_get_scroll_policy (GtkListBase *self,
GtkOrientation orientation);

133
gtk/gtklistview.c
View File

@ -193,22 +193,23 @@ gtk_list_view_split (GtkListBase *base,
{
GtkListView *self = GTK_LIST_VIEW (base);
GtkListTile *new_tile;
guint row_height;
int spacing, row_height;
row_height = tile->area.height / tile->n_items;
gtk_list_base_get_border_spacing (GTK_LIST_BASE (self), NULL, &spacing);
row_height = (tile->area.height - (tile->n_items - 1) * spacing) / tile->n_items;
new_tile = gtk_list_tile_split (self->item_manager, tile, n_items);
gtk_list_tile_set_area_size (self->item_manager,
tile,
tile->area.width,
row_height * tile->n_items);
row_height * tile->n_items + spacing * (tile->n_items - 1));
gtk_list_tile_set_area (self->item_manager,
new_tile,
&(GdkRectangle) {
tile->area.x,
tile->area.y + tile->area.height,
tile->area.y + tile->area.height + spacing,
tile->area.width,
row_height * new_tile->n_items
row_height * new_tile->n_items + spacing * (new_tile->n_items - 1)
});
return new_tile;
@ -239,6 +240,9 @@ gtk_list_view_get_allocation (GtkListBase *base,
{
/* item is not allocated yet */
GtkListTile *other;
int spacing;
gtk_list_base_get_border_spacing (GTK_LIST_BASE (self), NULL, &spacing);
for (other = gtk_rb_tree_node_get_previous (tile);
other;
@ -248,7 +252,7 @@ gtk_list_view_get_allocation (GtkListBase *base,
{
area->x = other->area.x;
area->width = other->area.width;
area->y = other->area.y + other->area.height;
area->y = other->area.y + other->area.height + spacing;
break;
}
}
@ -262,7 +266,7 @@ gtk_list_view_get_allocation (GtkListBase *base,
{
area->x = other->area.x;
area->width = other->area.width;
area->y = other->area.y;
area->y = MAX (0, other->area.y - spacing);
break;
}
}
@ -272,36 +276,6 @@ gtk_list_view_get_allocation (GtkListBase *base,
return TRUE;
}
static GtkBitset *
gtk_list_view_get_items_in_rect (GtkListBase *base,
const cairo_rectangle_int_t *rect)
{
GtkListView *self = GTK_LIST_VIEW (base);
guint first, last, n_items;
GtkBitset *result;
GtkListTile *tile;
result = gtk_bitset_new_empty ();
n_items = gtk_list_base_get_n_items (base);
if (n_items == 0)
return result;
tile = gtk_list_item_manager_get_tile_at (self->item_manager, 0, rect->y);
if (tile)
first = gtk_list_tile_get_position (self->item_manager, tile);
else
first = rect->y < 0 ? 0 : n_items - 1;
tile = gtk_list_item_manager_get_tile_at (self->item_manager, 0, rect->y + rect->height);
if (tile)
last = gtk_list_tile_get_position (self->item_manager, tile);
else
last = rect->y + rect->height < 0 ? 0 : n_items - 1;
gtk_bitset_add_range_closed (result, first, last);
return result;
}
static guint
gtk_list_view_move_focus_along (GtkListBase *base,
guint pos,
@ -326,9 +300,8 @@ gtk_list_view_get_position_from_allocation (GtkListBase *base,
{
GtkListView *self = GTK_LIST_VIEW (base);
GtkListTile *tile;
int row_height, tile_pos;
tile = gtk_list_item_manager_get_tile_at (self->item_manager, x, y);
tile = gtk_list_item_manager_get_nearest_tile (self->item_manager, x, y);
if (tile == NULL)
return FALSE;
@ -344,22 +317,60 @@ gtk_list_view_get_position_from_allocation (GtkListBase *base,
}
*pos = gtk_list_tile_get_position (self->item_manager, tile);
row_height = (tile->area.height / tile->n_items);
tile_pos = (y - tile->area.y) / row_height;
*pos += tile_pos;
if (area)
*area = tile->area;
if (tile->n_items > 1)
{
area->x = tile->area.x;
area->width = tile->area.width;
area->y = tile->area.y + tile_pos * row_height;
area->height = row_height;
int row_height, tile_pos, spacing;
gtk_list_base_get_border_spacing (GTK_LIST_BASE (self), NULL, &spacing);
row_height = (tile->area.height - (tile->n_items - 1) * spacing) / tile->n_items;
if (y >= tile->area.y + tile->area.height)
tile_pos = tile->n_items - 1;
else
tile_pos = (y - tile->area.y) / (row_height + spacing);
*pos += tile_pos;
if (area)
{
area->y = tile->area.y + tile_pos * (row_height + spacing);
area->height = row_height;
}
}
return TRUE;
}
static GtkBitset *
gtk_list_view_get_items_in_rect (GtkListBase *base,
const cairo_rectangle_int_t *rect)
{
guint first, last;
cairo_rectangle_int_t area;
GtkBitset *result;
result = gtk_bitset_new_empty ();
if (!gtk_list_view_get_position_from_allocation (base, rect->x, rect->y, &first, &area))
return result;
if (area.y + area.height < rect->y)
first++;
if (!gtk_list_view_get_position_from_allocation (base,
rect->x + rect->width - 1,
rect->y + rect->height - 1,
&last, &area))
return result;
if (area.y >= rect->y + rect->height)
last--;
if (last >= first)
gtk_bitset_add_range_closed (result, first, last);
return result;
}
static guint
gtk_list_view_move_focus_across (GtkListBase *base,
guint pos,
@ -432,9 +443,14 @@ gtk_list_view_measure_list (GtkWidget *widget,
{
GtkListView *self = GTK_LIST_VIEW (widget);
GtkListTile *tile;
int min, nat, child_min, child_nat;
int min, nat, child_min, child_nat, spacing;
GArray *min_heights, *nat_heights;
guint n_unknown;
guint n_unknown, n_items;
n_items = gtk_list_base_get_n_items (GTK_LIST_BASE (self));
if (n_items == 0)
return;
gtk_list_base_get_border_spacing (GTK_LIST_BASE (self), NULL, &spacing);
min_heights = g_array_new (FALSE, FALSE, sizeof (int));
nat_heights = g_array_new (FALSE, FALSE, sizeof (int));
@ -470,8 +486,8 @@ gtk_list_view_measure_list (GtkWidget *widget,
g_array_free (min_heights, TRUE);
g_array_free (nat_heights, TRUE);
*minimum = min;
*natural = nat;
*minimum = min + spacing * (n_items - 1);
*natural = nat + spacing * (n_items - 1);
}
static void
@ -500,7 +516,7 @@ gtk_list_view_size_allocate (GtkWidget *widget,
GtkListView *self = GTK_LIST_VIEW (widget);
GtkListTile *tile;
GArray *heights;
int min, nat, row_height, y, list_width;
int min, nat, row_height, y, list_width, spacing;
GtkOrientation orientation, opposite_orientation;
GtkScrollablePolicy scroll_policy, opposite_scroll_policy;
@ -508,6 +524,7 @@ gtk_list_view_size_allocate (GtkWidget *widget,
opposite_orientation = OPPOSITE_ORIENTATION (orientation);
scroll_policy = gtk_list_base_get_scroll_policy (GTK_LIST_BASE (self), orientation);
opposite_scroll_policy = gtk_list_base_get_scroll_policy (GTK_LIST_BASE (self), opposite_orientation);
gtk_list_base_get_border_spacing (GTK_LIST_BASE (self), NULL, &spacing);
/* step 0: exit early if list is empty */
tile = gtk_list_tile_gc (self->item_manager, gtk_list_item_manager_get_first (self->item_manager));
@ -559,9 +576,15 @@ gtk_list_view_size_allocate (GtkWidget *widget,
{
gtk_list_tile_set_area_position (self->item_manager, tile, 0, y);
if (tile->widget == NULL)
gtk_list_tile_set_area_size (self->item_manager, tile, list_width, row_height * tile->n_items);
{
gtk_list_tile_set_area_size (self->item_manager,
tile,
list_width,
row_height * tile->n_items
+ spacing * (tile->n_items - 1));
}
y += tile->area.height;
y += tile->area.height + spacing;
}
/* step 4: allocate the rest */