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renderbackground: Avoid unnecessary work in snapshot_background()

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This commit is contained in:
Timm Bäder 2020-01-25 16:21:00 +01:00
parent 77e0d360ed
commit 2e256986c3
1 changed files with 43 additions and 41 deletions
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84
gtk/gtkrenderbackground.c
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@ -269,63 +269,65 @@ void
gtk_css_style_snapshot_background (GtkCssBoxes *boxes,
GtkSnapshot *snapshot)
{
GtkCssValue *background_image = gtk_css_style_get_value (boxes->style, GTK_CSS_PROPERTY_BACKGROUND_IMAGE);
const GdkRGBA *bg_color = gtk_css_color_value_get_rgba (gtk_css_style_get_value (boxes->style, GTK_CSS_PROPERTY_BACKGROUND_COLOR));
const GtkCssValue *box_shadow = gtk_css_style_get_value (boxes->style, GTK_CSS_PROPERTY_BOX_SHADOW);
const gboolean has_bg_color = !gdk_rgba_is_clear (bg_color);
const gboolean has_bg_image = _gtk_css_image_value_get_image (_gtk_css_array_value_get_nth (background_image, 0)) != NULL;
const gboolean has_shadow = !gtk_css_shadow_value_is_none (box_shadow);
gint idx;
GtkCssValue *background_image;
GtkCssValue *box_shadow;
GtkCssValue *blend_modes;
const GdkRGBA *bg_color;
gint number_of_layers;
GskBlendMode *blend_mode_values;
background_image = gtk_css_style_get_value (boxes->style, GTK_CSS_PROPERTY_BACKGROUND_IMAGE);
bg_color = gtk_css_color_value_get_rgba (gtk_css_style_get_value (boxes->style, GTK_CSS_PROPERTY_BACKGROUND_COLOR));
box_shadow = gtk_css_style_get_value (boxes->style, GTK_CSS_PROPERTY_BOX_SHADOW);
/* This is the common default case of no background */
if (gdk_rgba_is_clear (bg_color) &&
_gtk_css_array_value_get_n_values (background_image) == 1 &&
_gtk_css_image_value_get_image (_gtk_css_array_value_get_nth (background_image, 0)) == NULL &&
gtk_css_shadow_value_is_none (box_shadow))
if (!has_bg_color && !has_bg_image && !has_shadow)
return;
gtk_snapshot_push_debug (snapshot, "CSS background");
gtk_css_shadow_value_snapshot_outset (box_shadow,
snapshot,
gtk_css_boxes_get_border_box (boxes));
if (has_shadow)
gtk_css_shadow_value_snapshot_outset (box_shadow,
snapshot,
gtk_css_boxes_get_border_box (boxes));
blend_modes = gtk_css_style_get_value (boxes->style, GTK_CSS_PROPERTY_BACKGROUND_BLEND_MODE);
number_of_layers = _gtk_css_array_value_get_n_values (background_image);
blend_mode_values = g_alloca (sizeof (GskBlendMode) * number_of_layers);
for (idx = number_of_layers - 1; idx >= 0; idx--)
if (has_bg_image)
{
blend_mode_values[idx] = _gtk_css_blend_mode_value_get (_gtk_css_array_value_get_nth (blend_modes, idx));
GtkCssValue *blend_modes = gtk_css_style_get_value (boxes->style, GTK_CSS_PROPERTY_BACKGROUND_BLEND_MODE);
const int number_of_layers = _gtk_css_array_value_get_n_values (background_image);
GskBlendMode *blend_mode_values = g_alloca (sizeof (GskBlendMode) * number_of_layers);
if (blend_mode_values[idx] != GSK_BLEND_MODE_DEFAULT)
gtk_snapshot_push_blend (snapshot, blend_mode_values[idx]);
}
if (!gdk_rgba_is_clear (bg_color))
gtk_theming_background_snapshot_color (boxes, snapshot, bg_color, background_image);
for (idx = number_of_layers - 1; idx >= 0; idx--)
{
if (blend_mode_values[idx] == GSK_BLEND_MODE_DEFAULT)
for (idx = number_of_layers - 1; idx >= 0; idx--)
{
gtk_theming_background_snapshot_layer (boxes, idx, snapshot);
blend_mode_values[idx] = _gtk_css_blend_mode_value_get (_gtk_css_array_value_get_nth (blend_modes, idx));
if (blend_mode_values[idx] != GSK_BLEND_MODE_DEFAULT)
gtk_snapshot_push_blend (snapshot, blend_mode_values[idx]);
}
else
if (has_bg_color)
gtk_theming_background_snapshot_color (boxes, snapshot, bg_color, background_image);
for (idx = number_of_layers - 1; idx >= 0; idx--)
{
gtk_snapshot_pop (snapshot);
gtk_theming_background_snapshot_layer (boxes, idx, snapshot);
gtk_snapshot_pop (snapshot);
if (blend_mode_values[idx] == GSK_BLEND_MODE_DEFAULT)
{
gtk_theming_background_snapshot_layer (boxes, idx, snapshot);
}
else
{
gtk_snapshot_pop (snapshot);
gtk_theming_background_snapshot_layer (boxes, idx, snapshot);
gtk_snapshot_pop (snapshot);
}
}
}
else if (has_bg_color)
{
gtk_theming_background_snapshot_color (boxes, snapshot, bg_color, background_image);
}
gtk_css_shadow_value_snapshot_inset (box_shadow,
snapshot,
gtk_css_boxes_get_padding_box (boxes));
if (has_shadow)
gtk_css_shadow_value_snapshot_inset (box_shadow,
snapshot,
gtk_css_boxes_get_padding_box (boxes));
gtk_snapshot_pop (snapshot);
}