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snapshot: Use GdkArray for the state stack

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This commit is contained in:
Benjamin Otte 2020-07-03 04:53:50 +02:00
parent 90b7b84337
commit 6f8e9bf3a9
1 changed files with 32 additions and 21 deletions
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53
gtk/gtksnapshot.c
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@ -113,6 +113,15 @@ struct _GtkSnapshotState {
} data; } data;
}; };
static void gtk_snapshot_state_clear (GtkSnapshotState *state);
#define GDK_ARRAY_NAME gtk_snapshot_states
#define GDK_ARRAY_TYPE_NAME GtkSnapshotStates
#define GDK_ARRAY_ELEMENT_TYPE GtkSnapshotState
#define GDK_ARRAY_FREE_FUNC gtk_snapshot_state_clear
#define GDK_ARRAY_BY_VALUE 1
#include "gdk/gdkarrayimpl.c"
/* This is a nasty little hack. We typedef GtkSnapshot to the fake object GdkSnapshot /* This is a nasty little hack. We typedef GtkSnapshot to the fake object GdkSnapshot
* so that we don't need to typecast between them. * so that we don't need to typecast between them.
* After all, the GdkSnapshot only exist so poor language bindings don't trip. Hardcore * After all, the GdkSnapshot only exist so poor language bindings don't trip. Hardcore
@ -121,7 +130,7 @@ struct _GtkSnapshotState {
struct _GdkSnapshot { struct _GdkSnapshot {
GObject parent_instance; /* it's really GdkSnapshot, but don't tell anyone! */ GObject parent_instance; /* it's really GdkSnapshot, but don't tell anyone! */
GArray *state_stack; GtkSnapshotStates state_stack;
GtkSnapshotNodes nodes; GtkSnapshotNodes nodes;
}; };
@ -136,10 +145,10 @@ gtk_snapshot_dispose (GObject *object)
{ {
GtkSnapshot *snapshot = GTK_SNAPSHOT (object); GtkSnapshot *snapshot = GTK_SNAPSHOT (object);
if (snapshot->state_stack) if (!gtk_snapshot_states_is_empty (&snapshot->state_stack))
gsk_render_node_unref (gtk_snapshot_to_node (snapshot)); gsk_render_node_unref (gtk_snapshot_to_node (snapshot));
g_assert (snapshot->state_stack == NULL); g_assert (gtk_snapshot_states_is_empty (&snapshot->state_stack));
g_assert (gtk_snapshot_nodes_is_empty (&snapshot->nodes)); g_assert (gtk_snapshot_nodes_is_empty (&snapshot->nodes));
G_OBJECT_CLASS (gtk_snapshot_parent_class)->dispose (object); G_OBJECT_CLASS (gtk_snapshot_parent_class)->dispose (object);
@ -187,11 +196,11 @@ gtk_snapshot_push_state (GtkSnapshot *snapshot,
GskTransform *transform, GskTransform *transform,
GtkSnapshotCollectFunc collect_func) GtkSnapshotCollectFunc collect_func)
{ {
const gsize n_states = snapshot->state_stack->len; const gsize n_states = gtk_snapshot_states_get_size (&snapshot->state_stack);
GtkSnapshotState *state; GtkSnapshotState *state;
g_array_set_size (snapshot->state_stack, n_states + 1); gtk_snapshot_states_set_size (&snapshot->state_stack, n_states + 1);
state = &g_array_index (snapshot->state_stack, GtkSnapshotState, n_states); state = gtk_snapshot_states_get (&snapshot->state_stack, n_states);
state->transform = gsk_transform_ref (transform); state->transform = gsk_transform_ref (transform);
state->collect_func = collect_func; state->collect_func = collect_func;
@ -204,17 +213,21 @@ gtk_snapshot_push_state (GtkSnapshot *snapshot,
static GtkSnapshotState * static GtkSnapshotState *
gtk_snapshot_get_current_state (const GtkSnapshot *snapshot) gtk_snapshot_get_current_state (const GtkSnapshot *snapshot)
{ {
g_assert (snapshot->state_stack->len > 0); gsize size = gtk_snapshot_states_get_size (&snapshot->state_stack);
return &g_array_index (snapshot->state_stack, GtkSnapshotState, snapshot->state_stack->len - 1); g_assert (size > 0);
return gtk_snapshot_states_get (&snapshot->state_stack, size - 1);
} }
static GtkSnapshotState * static GtkSnapshotState *
gtk_snapshot_get_previous_state (const GtkSnapshot *snapshot) gtk_snapshot_get_previous_state (const GtkSnapshot *snapshot)
{ {
g_assert (snapshot->state_stack->len > 1); gsize size = gtk_snapshot_states_get_size (&snapshot->state_stack);
return &g_array_index (snapshot->state_stack, GtkSnapshotState, snapshot->state_stack->len - 2); g_assert (size > 1);
return gtk_snapshot_states_get (&snapshot->state_stack, size - 2);
} }
static void static void
@ -237,8 +250,7 @@ gtk_snapshot_new (void)
snapshot = g_object_new (GTK_TYPE_SNAPSHOT, NULL); snapshot = g_object_new (GTK_TYPE_SNAPSHOT, NULL);
snapshot->state_stack = g_array_new (FALSE, TRUE, sizeof (GtkSnapshotState)); gtk_snapshot_states_init (&snapshot->state_stack);
g_array_set_clear_func (snapshot->state_stack, (GDestroyNotify)gtk_snapshot_state_clear);
gtk_snapshot_nodes_init (&snapshot->nodes); gtk_snapshot_nodes_init (&snapshot->nodes);
gtk_snapshot_push_state (snapshot, gtk_snapshot_push_state (snapshot,
@ -1104,14 +1116,14 @@ gtk_snapshot_pop_one (GtkSnapshot *snapshot)
guint state_index; guint state_index;
GskRenderNode *node; GskRenderNode *node;
if (snapshot->state_stack->len == 0) if (gtk_snapshot_states_is_empty (&snapshot->state_stack))
{ {
g_warning ("Too many gtk_snapshot_pop() calls."); g_warning ("Too many gtk_snapshot_pop() calls.");
return NULL; return NULL;
} }
state = gtk_snapshot_get_current_state (snapshot); state = gtk_snapshot_get_current_state (snapshot);
state_index = snapshot->state_stack->len - 1; state_index = gtk_snapshot_states_get_size (&snapshot->state_stack) - 1;
if (state->collect_func) if (state->collect_func)
{ {
@ -1121,7 +1133,7 @@ gtk_snapshot_pop_one (GtkSnapshot *snapshot)
state->n_nodes); state->n_nodes);
/* The collect func may not modify the state stack... */ /* The collect func may not modify the state stack... */
g_assert (state_index == snapshot->state_stack->len - 1); g_assert (state_index == gtk_snapshot_states_get_size (&snapshot->state_stack) - 1);
/* Remove all the state's nodes from the list of nodes */ /* Remove all the state's nodes from the list of nodes */
g_assert (state->start_node_index + state->n_nodes == gtk_snapshot_nodes_get_size (&snapshot->nodes)); g_assert (state->start_node_index + state->n_nodes == gtk_snapshot_nodes_get_size (&snapshot->nodes));
@ -1139,7 +1151,7 @@ gtk_snapshot_pop_one (GtkSnapshot *snapshot)
g_assert (previous_state->start_node_index + previous_state->n_nodes == gtk_snapshot_nodes_get_size (&snapshot->nodes)); g_assert (previous_state->start_node_index + previous_state->n_nodes == gtk_snapshot_nodes_get_size (&snapshot->nodes));
} }
g_array_remove_index (snapshot->state_stack, state_index); gtk_snapshot_states_splice (&snapshot->state_stack, state_index, 1, NULL, 0);
return node; return node;
} }
@ -1235,16 +1247,15 @@ gtk_snapshot_to_node (GtkSnapshot *snapshot)
result = gtk_snapshot_pop_internal (snapshot); result = gtk_snapshot_pop_internal (snapshot);
/* We should have exactly our initial state */ /* We should have exactly our initial state */
if (snapshot->state_stack->len > 0) if (!gtk_snapshot_states_is_empty (&snapshot->state_stack))
{ {
g_warning ("Too many gtk_snapshot_push() calls. %u states remaining.", snapshot->state_stack->len); g_warning ("Too many gtk_snapshot_push() calls. %zu states remaining.",
gtk_snapshot_states_get_size (&snapshot->state_stack));
} }
g_array_free (snapshot->state_stack, TRUE); gtk_snapshot_states_clear (&snapshot->state_stack);
gtk_snapshot_nodes_clear (&snapshot->nodes); gtk_snapshot_nodes_clear (&snapshot->nodes);
snapshot->state_stack = NULL;
return result; return result;
} }