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snapshot: Add API for colors and textures

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This commit is contained in:
Benjamin Otte 2016-12-13 04:22:13 +01:00
parent ee9aca882d
commit b120075698
4 changed files with 110 additions and 8 deletions
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2
docs/reference/gtk/gtk4-sections.txt
View File

@ -4462,6 +4462,8 @@ gtk_snapshot_transform
gtk_snapshot_translate_2d
gtk_snapshot_append_node
gtk_snapshot_append_cairo_node
gtk_snapshot_append_texture_node
gtk_snapshot_append_color_node
gtk_snapshot_clips_rect
gtk_snapshot_render_background
gtk_snapshot_render_frame

10
gtk/gtkrendericon.c
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@ -297,17 +297,11 @@ gtk_css_style_snapshot_icon_texture (GtkCssStyle *style,
if (graphene_matrix_is_identity (&transform_matrix))
{
double offset_x, offset_y;
gtk_snapshot_get_offset (snapshot, &offset_x, &offset_y);
graphene_rect_init (&bounds,
offset_x, offset_y,
0, 0,
gsk_texture_get_width (texture) / texture_scale,
gsk_texture_get_height (texture) / texture_scale);
icon_node = gsk_texture_node_new (texture, &bounds);
gsk_render_node_set_name (icon_node, "Icon");
gtk_snapshot_append_node (snapshot, icon_node);
gtk_snapshot_append_texture_node (snapshot, texture, &bounds, "Icon");
}
else
{

94
gtk/gtksnapshot.c
View File

@ -374,6 +374,100 @@ gtk_snapshot_append_cairo_node (GtkSnapshot *snapshot,
return cr;
}
/**
* gtk_snapshot_append_texture_node:
* @snapshot: a #GtkSnapshot
* @texture: the #GskTexture to render
* @bounds: the bounds for the new node
* @name: (transfer none): a printf() style format string for the name for the new node
* @...: arguments to insert into the format string
*
* Creates a new render node drawing the @texture into the given @bounds and appends it
* to the current render node of @snapshot.
**/
void
gtk_snapshot_append_texture_node (GtkSnapshot *snapshot,
GskTexture *texture,
const graphene_rect_t *bounds,
const char *name,
...)
{
GskRenderNode *node;
graphene_rect_t real_bounds;
g_return_if_fail (snapshot != NULL);
g_return_if_fail (GSK_IS_TEXTURE (texture));
g_return_if_fail (bounds != NULL);
graphene_rect_offset_r (bounds, snapshot->state->translate_x, snapshot->state->translate_y, &real_bounds);
node = gsk_texture_node_new (texture, &real_bounds);
if (name)
{
va_list args;
char *str;
va_start (args, name);
str = g_strdup_vprintf (name, args);
va_end (args);
gsk_render_node_set_name (node, str);
g_free (str);
}
gtk_snapshot_append_node (snapshot, node);
gsk_render_node_unref (node);
}
/**
* gtk_snapshot_append_color_node:
* @snapshot: a #GtkSnapshot
* @color: the #GdkRGBA to draw
* @bounds: the bounds for the new node
* @name: (transfer none): a printf() style format string for the name for the new node
* @...: arguments to insert into the format string
*
* Creates a new render node drawing the @color into the given @bounds and appends it
* to the current render node of @snapshot.
*
* You should try to avoid calling this function if @color is transparent.
**/
void
gtk_snapshot_append_color_node (GtkSnapshot *snapshot,
const GdkRGBA *color,
const graphene_rect_t *bounds,
const char *name,
...)
{
GskRenderNode *node;
graphene_rect_t real_bounds;
g_return_if_fail (snapshot != NULL);
g_return_if_fail (color != NULL);
g_return_if_fail (bounds != NULL);
graphene_rect_offset_r (bounds, snapshot->state->translate_x, snapshot->state->translate_y, &real_bounds);
node = gsk_color_node_new (color, &real_bounds);
if (name)
{
va_list args;
char *str;
va_start (args, name);
str = g_strdup_vprintf (name, args);
va_end (args);
gsk_render_node_set_name (node, str);
g_free (str);
}
gtk_snapshot_append_node (snapshot, node);
gsk_render_node_unref (node);
}
static void
rectangle_init_from_graphene (cairo_rectangle_int_t *cairo,
const graphene_rect_t *graphene)

12
gtk/gtksnapshot.h
View File

@ -64,6 +64,18 @@ cairo_t * gtk_snapshot_append_cairo_node (GtkSnapshot
const graphene_rect_t *bounds,
const char *name,
...) G_GNUC_PRINTF(3, 4);
GDK_AVAILABLE_IN_3_90
void gtk_snapshot_append_texture_node (GtkSnapshot *snapshot,
GskTexture *texture,
const graphene_rect_t *bounds,
const char *name,
...) G_GNUC_PRINTF (4, 5);
GDK_AVAILABLE_IN_3_90
void gtk_snapshot_append_color_node (GtkSnapshot *snapshot,
const GdkRGBA *color,
const graphene_rect_t *bounds,
const char *name,
...) G_GNUC_PRINTF (4, 5);
GDK_AVAILABLE_IN_3_90
gboolean gtk_snapshot_clips_rect (GtkSnapshot *snapshot,