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node-editor: Improve the scaling

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We only want to scale the main rendering, not whats
shown in the sidebar. Also, make the scale logarithmic.
This commit is contained in:
Matthias Clasen 2023-04-03 22:32:31 -04:00
parent 9ccde8b913
commit 6182f4a332
2 changed files with 27 additions and 10 deletions
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31
demos/node-editor/node-editor-window.c
View File

@ -174,6 +174,7 @@ text_changed (GtkTextBuffer *buffer,
GtkTextIter iter;
GtkTextIter start, end;
float scale;
GskRenderNode *big_node;
g_array_remove_range (self->errors, 0, self->errors->len);
text = get_current_text (self->text_buffer);
@ -186,13 +187,18 @@ text_changed (GtkTextBuffer *buffer,
self->node = gsk_render_node_deserialize (bytes, deserialize_error_func, self);
scale = gtk_scale_button_get_value (GTK_SCALE_BUTTON (self->scale_scale));
if (self->node && scale != 1.0)
if (self->node && scale != 0.)
{
GskRenderNode *node;
node = gsk_transform_node_new (self->node, gsk_transform_scale (NULL, scale, scale));
gsk_render_node_unref (self->node);
self->node = node;
scale = pow (2., scale);
big_node = gsk_transform_node_new (self->node, gsk_transform_scale (NULL, scale, scale));
}
else if (self->node)
{
big_node = gsk_render_node_ref (self->node);
}
else
{
big_node = NULL;
}
g_bytes_unref (bytes);
@ -204,18 +210,27 @@ text_changed (GtkTextBuffer *buffer,
graphene_rect_t bounds;
guint i;
snapshot = gtk_snapshot_new ();
gsk_render_node_get_bounds (big_node, &bounds);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (- bounds.origin.x, - bounds.origin.y));
gtk_snapshot_append_node (snapshot, big_node);
paintable = gtk_snapshot_free_to_paintable (snapshot, &bounds.size);
gtk_picture_set_paintable (GTK_PICTURE (self->picture), paintable);
g_clear_object (&paintable);
snapshot = gtk_snapshot_new ();
gsk_render_node_get_bounds (self->node, &bounds);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (- bounds.origin.x, - bounds.origin.y));
gtk_snapshot_append_node (snapshot, self->node);
paintable = gtk_snapshot_free_to_paintable (snapshot, &bounds.size);
gtk_picture_set_paintable (GTK_PICTURE (self->picture), paintable);
for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (self->renderers)); i++)
{
gpointer item = g_list_model_get_item (G_LIST_MODEL (self->renderers), i);
gtk_renderer_paintable_set_paintable (item, paintable);
g_object_unref (item);
}
g_clear_object (&paintable);
}
else
@ -223,6 +238,8 @@ text_changed (GtkTextBuffer *buffer,
gtk_picture_set_paintable (GTK_PICTURE (self->picture), NULL);
}
g_clear_pointer (&big_node, gsk_render_node_unref);
gtk_text_buffer_get_start_iter (self->text_buffer, &iter);
while (!gtk_text_iter_is_end (&iter))

6
demos/node-editor/node-editor-window.ui
View File

@ -163,9 +163,9 @@
<property name="valign">center</property>
<property name="adjustment">
<object class="GtkAdjustment">
<property name="lower">1</property>
<property name="value">1</property>
<property name="upper">10</property>
<property name="lower">-4</property>
<property name="value">0</property>
<property name="upper">4</property>
<property name="step-increment">0.1</property>
<property name="page-increment">0.5</property>
</object>