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gtk: Add gtk_snapshot_push_shadow2

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This is a private snapshot function that uses the new constructor
to create a shadow node with the given color states.
This commit is contained in:
Matthias Clasen
2024-08-02 12:00:55 -04:00
parent 0f7c0f616c
commit b92ca5da02
2 changed files with 64 additions and 16 deletions
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76
gtk/gtksnapshot.c
View File

@@ -119,8 +119,8 @@ G_GNUC_END_IGNORE_DEPRECATIONS
} stroke;
struct {
gsize n_shadows;
GskShadow *shadows;
GskShadow a_shadow; /* Used if n_shadows == 1 */
GskShadow2 *shadows;
GskShadow2 a_shadow; /* Used if n_shadows == 1 */
} shadow;
struct {
GskBlendMode blend_mode;
@@ -1348,11 +1348,11 @@ gtk_snapshot_collect_shadow (GtkSnapshot *snapshot,
if (node == NULL)
return NULL;
shadow_node = gsk_shadow_node_new (node,
state->data.shadow.shadows != NULL ?
state->data.shadow.shadows :
&state->data.shadow.a_shadow,
state->data.shadow.n_shadows);
shadow_node = gsk_shadow_node_new2 (node,
state->data.shadow.shadows != NULL
? state->data.shadow.shadows
: &state->data.shadow.a_shadow,
state->data.shadow.n_shadows);
gsk_render_node_unref (node);
@@ -1391,6 +1391,12 @@ gtk_snapshot_append_stroke (GtkSnapshot *snapshot,
static void
gtk_snapshot_clear_shadow (GtkSnapshotState *state)
{
if (state->data.shadow.shadows != 0)
for (gsize i = 0; i < state->data.shadow.n_shadows; i++)
gdk_color_finish (&state->data.shadow.shadows[i].color);
else
gdk_color_finish (&state->data.shadow.a_shadow.color);
g_free (state->data.shadow.shadows);
}
@@ -1408,6 +1414,41 @@ void
gtk_snapshot_push_shadow (GtkSnapshot *snapshot,
const GskShadow *shadow,
gsize n_shadows)
{
GskShadow2 *shadow2;
g_return_if_fail (n_shadows > 0);
shadow2 = g_new (GskShadow2, n_shadows);
for (gsize i = 0; i < n_shadows; i++)
{
gdk_color_init_from_rgba (&shadow2[i].color, &shadow[i].color);
graphene_point_init (&shadow2[i].offset, shadow[i].dx,shadow[i].dy);
shadow2[i].radius = shadow[i].radius;
}
gtk_snapshot_push_shadow2 (snapshot, shadow2, n_shadows);
for (gsize i = 0; i < n_shadows; i++)
gdk_color_finish (&shadow2[i].color);
g_free (shadow2);
}
/*< private >
* gtk_snapshot_push_shadow2:
* @snapshot: a `GtkSnapshot`
* @shadow: (array length=n_shadows): the first shadow specification
* @n_shadows: number of shadow specifications
*
* Applies a shadow to an image.
*
* The image is recorded until the next call to [method@Gtk.Snapshot.pop].
*/
void
gtk_snapshot_push_shadow2 (GtkSnapshot *snapshot,
const GskShadow2 *shadow,
gsize n_shadows)
{
GtkSnapshotState *state;
GskTransform *transform;
@@ -1429,20 +1470,23 @@ gtk_snapshot_push_shadow (GtkSnapshot *snapshot,
if (n_shadows == 1)
{
state->data.shadow.shadows = NULL;
memcpy (&state->data.shadow.a_shadow, shadow, sizeof (GskShadow));
state->data.shadow.a_shadow.dx *= scale_x;
state->data.shadow.a_shadow.dy *= scale_y;
state->data.shadow.a_shadow.radius *= scale_x;
gdk_color_init_copy (&state->data.shadow.a_shadow.color, &shadow->color);
graphene_point_init (&state->data.shadow.a_shadow.offset,
shadow->offset.x * scale_x,
shadow->offset.y * scale_y);
state->data.shadow.a_shadow.radius = shadow->radius * scale_x;
}
else
{
state->data.shadow.shadows = g_malloc (sizeof (GskShadow) * n_shadows);
memcpy (state->data.shadow.shadows, shadow, sizeof (GskShadow) * n_shadows);
state->data.shadow.shadows = g_malloc (sizeof (GskShadow2) * n_shadows);
memcpy (state->data.shadow.shadows, shadow, sizeof (GskShadow2) * n_shadows);
for (i = 0; i < n_shadows; i++)
{
state->data.shadow.shadows[i].dx *= scale_x;
state->data.shadow.shadows[i].dy *= scale_y;
state->data.shadow.shadows[i].radius *= scale_x;
gdk_color_init_copy (&state->data.shadow.shadows[i].color, &shadow[i].color);
graphene_point_init (&state->data.shadow.shadows[i].offset,
shadow[i].offset.x * scale_x,
shadow[i].offset.y * scale_y);
state->data.shadow.shadows[i].radius = shadow[i].radius * scale_x;
}
}

4
gtk/gtksnapshotprivate.h
View File

@@ -61,5 +61,9 @@ void gtk_snapshot_append_outset_shadow2 (GtkSnapshot
float spread,
float blur_radius);
void gtk_snapshot_push_shadow2 (GtkSnapshot *snapshot,
const GskShadow2 *shadow,
gsize n_shadows);
G_END_DECLS