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Split css background into individual render nodes

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Use separate render nodes for each layer in a multi-image
background. WARNING: blend modes don't work right yet.
This commit is contained in:
Matthias Clasen 2016-08-13 04:17:35 -04:00 committed by Emmanuele Bassi
parent 9a2de80497
commit 39c1aa5e27
2 changed files with 114 additions and 11 deletions
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4
gtk/gtkcssgadget.c
View File

@ -866,18 +866,16 @@ gtk_css_gadget_get_render_node (GtkCssGadget *gadget,
get_box_border (style, &border);
get_box_padding (style, &padding);
str = g_strconcat ("Background<", G_OBJECT_TYPE_NAME (gtk_css_gadget_get_owner (gadget)), ">", NULL);
gtk_css_style_add_background_render_nodes (style,
renderer,
box_node,
&bounds,
str,
G_OBJECT_TYPE_NAME (gtk_css_gadget_get_owner (gadget)),
clip.left + margin.left,
clip.top + margin.top,
width - clip.left - clip.right - margin.left - margin.right,
height - clip.top - clip.bottom - margin.top - margin.bottom,
gtk_css_node_get_junction_sides (priv->node));
g_free (str);
str = g_strconcat ("Border<", G_OBJECT_TYPE_NAME (gtk_css_gadget_get_owner (gadget)), ">", NULL);
border_node = gsk_renderer_create_render_node (renderer);

121
gtk/gtkrenderbackground.c
View File

@ -428,6 +428,33 @@ gtk_css_style_render_background (GtkCssStyle *style,
cairo_restore (cr);
}
static GskBlendMode
translate_blend_mode (GtkCssBlendMode blend_mode)
{
switch (blend_mode)
{
case GTK_CSS_BLEND_MODE_COLOR_BURN: return GSK_BLEND_MODE_COLOR_BURN;
case GTK_CSS_BLEND_MODE_COLOR_DODGE: return GSK_BLEND_MODE_COLOR_BURN;
case GTK_CSS_BLEND_MODE_DARKEN: return GSK_BLEND_MODE_DARKEN;
case GTK_CSS_BLEND_MODE_LIGHTEN: return GSK_BLEND_MODE_LIGHTEN;
case GTK_CSS_BLEND_MODE_DIFFERENCE: return GSK_BLEND_MODE_DIFFERENCE;
case GTK_CSS_BLEND_MODE_EXCLUSION: return GSK_BLEND_MODE_EXCLUSION;
case GTK_CSS_BLEND_MODE_HARD_LIGHT: return GSK_BLEND_MODE_HARD_LIGHT;
case GTK_CSS_BLEND_MODE_SOFT_LIGHT: return GSK_BLEND_MODE_SOFT_LIGHT;
case GTK_CSS_BLEND_MODE_MULTIPLY: return GSK_BLEND_MODE_MULTIPLY;
case GTK_CSS_BLEND_MODE_NORMAL: return GSK_BLEND_MODE_DEFAULT;
case GTK_CSS_BLEND_MODE_OVERLAY: return GSK_BLEND_MODE_OVERLAY;
case GTK_CSS_BLEND_MODE_SCREEN: return GSK_BLEND_MODE_SCREEN;
case GTK_CSS_BLEND_MODE_SATURATE:
case GTK_CSS_BLEND_MODE_LUMINOSITY:
case GTK_CSS_BLEND_MODE_COLOR:
case GTK_CSS_BLEND_MODE_HUE:
default:
g_warning ("CSS blend mode %d not supported by GSK yet", blend_mode);
return GSK_BLEND_MODE_DEFAULT;
}
}
void
gtk_css_style_add_background_render_nodes (GtkCssStyle *style,
GskRenderer *renderer,
@ -443,10 +470,16 @@ gtk_css_style_add_background_render_nodes (GtkCssStyle *style,
GskRenderNode *bg_node;
cairo_t *cr;
GtkCssValue *background_image;
GtkCssValue *blend_modes;
GtkCssValue *box_shadow;
const GdkRGBA *bg_color;
GtkThemingBackground bg;
gchar *str;
gint number_of_layers;
gint idx;
background_image = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BACKGROUND_IMAGE);
blend_modes = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BACKGROUND_BLEND_MODE);
bg_color = _gtk_css_rgba_value_get_rgba (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BACKGROUND_COLOR));
box_shadow = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BOX_SHADOW);
@ -457,15 +490,87 @@ gtk_css_style_add_background_render_nodes (GtkCssStyle *style,
_gtk_css_shadows_value_is_none (box_shadow))
return;
bg_node = gsk_renderer_create_render_node (renderer);
gsk_render_node_set_name (bg_node, name);
gsk_render_node_set_bounds (bg_node, bounds);
cr = gsk_render_node_get_draw_context (bg_node);
gtk_css_style_render_background (style, cr, x, y, width, height, junction);
cairo_destroy (cr);
bg.style = style;
_gtk_theming_background_init_style (&bg, width, height, junction);
gsk_render_node_append_child (parent_node, bg_node);
gsk_render_node_unref (bg_node);
if (!_gtk_css_shadows_value_is_none (box_shadow))
{
str = g_strconcat ("Outer Shadow<", name, ">", NULL);
bg_node = gsk_renderer_create_render_node (renderer);
gsk_render_node_set_name (bg_node, str);
gsk_render_node_set_bounds (bg_node, bounds);
cr = gsk_render_node_get_draw_context (bg_node);
cairo_translate (cr, x, y);
_gtk_css_shadows_value_paint_box (box_shadow,
cr,
&bg.boxes[GTK_CSS_AREA_BORDER_BOX],
FALSE);
cairo_destroy (cr);
g_free (str);
gsk_render_node_append_child (parent_node, bg_node);
gsk_render_node_unref (bg_node);
}
if (!gtk_rgba_is_clear (bg_color))
{
str = g_strconcat ("Background Color<", name, ">", NULL);
bg_node = gsk_renderer_create_render_node (renderer);
gsk_render_node_set_name (bg_node, str);
gsk_render_node_set_bounds (bg_node, bounds);
cr = gsk_render_node_get_draw_context (bg_node);
cairo_translate (cr, x, y);
_gtk_theming_background_paint_color (&bg, cr, bg_color, background_image);
cairo_destroy (cr);
g_free (str);
gsk_render_node_append_child (parent_node, bg_node);
gsk_render_node_unref (bg_node);
}
number_of_layers = _gtk_css_array_value_get_n_values (background_image);
for (idx = number_of_layers - 1; idx >= 0; idx--)
{
GtkCssBlendMode blend_mode;
blend_mode = _gtk_css_blend_mode_value_get (_gtk_css_array_value_get_nth (blend_modes, idx));
str = g_strdup_printf ("Background%d<%s>", idx, name);
bg_node = gsk_renderer_create_render_node (renderer);
gsk_render_node_set_blend_mode (bg_node,
translate_blend_mode (blend_mode));
gsk_render_node_set_name (bg_node, str);
gsk_render_node_set_bounds (bg_node, bounds);
cr = gsk_render_node_get_draw_context (bg_node);
cairo_translate (cr, x, y);
_gtk_theming_background_paint_layer (&bg, idx, cr, GTK_CSS_BLEND_MODE_NORMAL);
cairo_destroy (cr);
g_free (str);
gsk_render_node_append_child (parent_node, bg_node);
gsk_render_node_unref (bg_node);
}
if (!_gtk_css_shadows_value_is_none (box_shadow))
{
str = g_strconcat ("Inner Shadow<", name, ">", NULL);
bg_node = gsk_renderer_create_render_node (renderer);
gsk_render_node_set_name (bg_node, str);
gsk_render_node_set_bounds (bg_node, bounds);
cr = gsk_render_node_get_draw_context (bg_node);
cairo_translate (cr, x, y);
_gtk_css_shadows_value_paint_box (box_shadow,
cr,
&bg.boxes[GTK_CSS_AREA_PADDING_BOX],
TRUE);
cairo_destroy (cr);
g_free (str);
gsk_render_node_append_child (parent_node, bg_node);
gsk_render_node_unref (bg_node);
}
}
static gboolean