[gtk/wip/otte/transform: 9/37] snapshot: Add functions to append shadows
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wip/otte/transform: 9/37] snapshot: Add functions to append shadows
- Date: Thu, 21 Feb 2019 06:21:35 +0000 (UTC)
commit d06f710062f2203f9c28d1aa7e35582588946bd3
Author: Benjamin Otte <otte redhat com>
Date: Thu Feb 21 03:26:03 2019 +0100
snapshot: Add functions to append shadows
docs/reference/gtk/gtk4-sections.txt | 2 +
gtk/gtkcssshadowvalue.c | 26 ++---------
gtk/gtksnapshot.c | 88 ++++++++++++++++++++++++++++++++++++
gtk/gtksnapshot.h | 16 +++++++
4 files changed, 110 insertions(+), 22 deletions(-)
---
diff --git a/docs/reference/gtk/gtk4-sections.txt b/docs/reference/gtk/gtk4-sections.txt
index 956fa95eaf..86419e716a 100644
--- a/docs/reference/gtk/gtk4-sections.txt
+++ b/docs/reference/gtk/gtk4-sections.txt
@@ -4408,6 +4408,8 @@ gtk_snapshot_append_layout
gtk_snapshot_append_linear_gradient
gtk_snapshot_append_repeating_linear_gradient
gtk_snapshot_append_border
+gtk_snapshot_append_inset_shadow
+gtk_snapshot_append_outset_shadow
gtk_snapshot_render_background
gtk_snapshot_render_frame
gtk_snapshot_render_focus
diff --git a/gtk/gtkcssshadowvalue.c b/gtk/gtkcssshadowvalue.c
index b04c1f58c3..7e6c41c17d 100644
--- a/gtk/gtkcssshadowvalue.c
+++ b/gtk/gtkcssshadowvalue.c
@@ -349,28 +349,19 @@ gtk_css_shadow_value_snapshot_outset (const GtkCssValue *shadow,
GtkSnapshot *snapshot,
const GskRoundedRect *border_box)
{
- GskRoundedRect outline;
- GskRenderNode *node;
- int off_x, off_y;
-
g_return_if_fail (shadow->class == >K_CSS_VALUE_SHADOW);
/* We don't need to draw invisible shadows */
if (gdk_rgba_is_clear (_gtk_css_rgba_value_get_rgba (shadow->color)))
return;
- gtk_snapshot_get_offset (snapshot, &off_x, &off_y);
- gsk_rounded_rect_init_copy (&outline, border_box);
- gsk_rounded_rect_offset (&outline, off_x, off_y);
-
- node = gsk_outset_shadow_node_new (&outline,
+ gtk_snapshot_append_outset_shadow (snapshot,
+ border_box,
_gtk_css_rgba_value_get_rgba (shadow->color),
_gtk_css_number_value_get (shadow->hoffset, 0),
_gtk_css_number_value_get (shadow->voffset, 0),
_gtk_css_number_value_get (shadow->spread, 0),
_gtk_css_number_value_get (shadow->radius, 0));
- gtk_snapshot_append_node_internal (snapshot, node);
- gsk_render_node_unref (node);
}
void
@@ -378,28 +369,19 @@ gtk_css_shadow_value_snapshot_inset (const GtkCssValue *shadow,
GtkSnapshot *snapshot,
const GskRoundedRect*padding_box)
{
- GskRoundedRect outline;
- GskRenderNode *node;
- int off_x, off_y;
-
g_return_if_fail (shadow->class == >K_CSS_VALUE_SHADOW);
/* We don't need to draw invisible shadows */
if (gdk_rgba_is_clear (_gtk_css_rgba_value_get_rgba (shadow->color)))
return;
- gtk_snapshot_get_offset (snapshot, &off_x, &off_y);
- gsk_rounded_rect_init_copy (&outline, padding_box);
- gsk_rounded_rect_offset (&outline, off_x, off_y);
-
- node = gsk_inset_shadow_node_new (&outline,
+ gtk_snapshot_append_inset_shadow (snapshot,
+ padding_box,
_gtk_css_rgba_value_get_rgba (shadow->color),
_gtk_css_number_value_get (shadow->hoffset, 0),
_gtk_css_number_value_get (shadow->voffset, 0),
_gtk_css_number_value_get (shadow->spread, 0),
_gtk_css_number_value_get (shadow->radius, 0));
- gtk_snapshot_append_node_internal (snapshot, node);
- gsk_render_node_unref (node);
}
gboolean
diff --git a/gtk/gtksnapshot.c b/gtk/gtksnapshot.c
index eb666dc5ad..0caa0ef078 100644
--- a/gtk/gtksnapshot.c
+++ b/gtk/gtksnapshot.c
@@ -1636,3 +1636,91 @@ gtk_snapshot_append_border (GtkSnapshot *snapshot,
gtk_snapshot_append_node_internal (snapshot, node);
gsk_render_node_unref (node);
}
+
+/**
+ * gtk_snapshot_append_inset_shadow:
+ * @snapshot: a #GtkSnapshot
+ * @outline: outline of the region surrounded by shadow
+ * @color: color of the shadow
+ * @dx: horizontal offset of shadow
+ * @dy: vertical offset of shadow
+ * @spread: how far the shadow spreads towards the inside
+ * @blur_radius: how much blur to apply to the shadow
+ *
+ * Appends an inset shadow into the box given by @outline.
+ */
+void
+gtk_snapshot_append_inset_shadow (GtkSnapshot *snapshot,
+ const GskRoundedRect *outline,
+ const GdkRGBA *color,
+ float dx,
+ float dy,
+ float spread,
+ float blur_radius)
+{
+ GskRenderNode *node;
+ GskRoundedRect real_outline;
+ float scale_x, scale_y, x, y;
+
+ g_return_if_fail (snapshot != NULL);
+ g_return_if_fail (outline != NULL);
+ g_return_if_fail (color != NULL);
+
+ gtk_snapshot_ensure_affine (snapshot, &scale_x, &scale_y, &x, &y);
+ gtk_rounded_rect_scale_affine (&real_outline, outline, scale_x, scale_y, x, y);
+
+ node = gsk_inset_shadow_node_new (&real_outline,
+ color,
+ scale_x * dx + x,
+ scale_y * dy + y,
+ spread,
+ blur_radius);
+
+ gtk_snapshot_append_node_internal (snapshot, node);
+ gsk_render_node_unref (node);
+}
+
+/**
+ * gtk_snapshot_append_outset_shadow:
+ * @snapshot: a #GtkSnapshot
+ * @outline: outline of the region surrounded by shadow
+ * @color: color of the shadow
+ * @dx: horizontal offset of shadow
+ * @dy: vertical offset of shadow
+ * @spread: how far the shadow spreads towards the outside
+ * @blur_radius: how much blur to apply to the shadow
+ *
+ * Appends an outset shadow node around the box given by @outline.
+ */
+void
+gtk_snapshot_append_outset_shadow (GtkSnapshot *snapshot,
+ const GskRoundedRect *outline,
+ const GdkRGBA *color,
+ float dx,
+ float dy,
+ float spread,
+ float blur_radius)
+{
+ GskRenderNode *node;
+ GskRoundedRect real_outline;
+ float scale_x, scale_y, x, y;
+
+ g_return_if_fail (snapshot != NULL);
+ g_return_if_fail (outline != NULL);
+ g_return_if_fail (color != NULL);
+
+ gtk_snapshot_ensure_affine (snapshot, &scale_x, &scale_y, &x, &y);
+ gtk_rounded_rect_scale_affine (&real_outline, outline, scale_x, scale_y, x, y);
+
+ node = gsk_outset_shadow_node_new (&real_outline,
+ color,
+ scale_x * dx + x,
+ scale_y * dy + y,
+ spread,
+ blur_radius);
+
+
+ gtk_snapshot_append_node_internal (snapshot, node);
+ gsk_render_node_unref (node);
+}
+
diff --git a/gtk/gtksnapshot.h b/gtk/gtksnapshot.h
index 1f61d7a214..05cf3f5867 100644
--- a/gtk/gtksnapshot.h
+++ b/gtk/gtksnapshot.h
@@ -146,6 +146,22 @@ void gtk_snapshot_append_border (GtkSnapshot
const GskRoundedRect *outline,
const float border_width[4],
const GdkRGBA border_color[4]);
+GDK_AVAILABLE_IN_ALL
+void gtk_snapshot_append_inset_shadow (GtkSnapshot *snapshot,
+ const GskRoundedRect *outline,
+ const GdkRGBA *color,
+ float dx,
+ float dy,
+ float spread,
+ float blur_radius);
+GDK_AVAILABLE_IN_ALL
+void gtk_snapshot_append_outset_shadow (GtkSnapshot *snapshot,
+ const GskRoundedRect *outline,
+ const GdkRGBA *color,
+ float dx,
+ float dy,
+ float spread,
+ float blur_radius);
/* next function implemented in gskpango.c */
GDK_AVAILABLE_IN_ALL
void gtk_snapshot_append_layout (GtkSnapshot *snapshot,
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