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#include "config.h"
#include "layoutoverlay.h"
#include "gtkwidgetprivate.h"
#include "gtkcssstyleprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcssnumbervalueprivate.h"
struct _GtkLayoutOverlay
{
GtkInspectorOverlay parent_instance;
};
struct _GtkLayoutOverlayClass
{
GtkInspectorOverlayClass parent_class;
};
G_DEFINE_TYPE (GtkLayoutOverlay, gtk_layout_overlay, GTK_TYPE_INSPECTOR_OVERLAY)
static gint
get_number (GtkCssValue *value)
{
double d = _gtk_css_number_value_get (value, 100);
if (d < 1)
return ceil (d);
else
return floor (d);
}
static void
get_box_margin (GtkCssStyle *style,
GtkBorder *margin)
{
margin->top = get_number (style->size->margin_top);
margin->left = get_number (style->size->margin_left);
margin->bottom = get_number (style->size->margin_bottom);
margin->right = get_number (style->size->margin_right);
}
static void
get_box_border (GtkCssStyle *style,
GtkBorder *border)
{
border->top = get_number (style->border->border_top_width);
border->left = get_number (style->border->border_left_width);
border->bottom = get_number (style->border->border_bottom_width);
border->right = get_number (style->border->border_right_width);
}
static void
get_box_padding (GtkCssStyle *style,
GtkBorder *border)
{
border->top = get_number (style->size->padding_top);
border->left = get_number (style->size->padding_left);
border->bottom = get_number (style->size->padding_bottom);
border->right = get_number (style->size->padding_right);
}
static void
recurse_child_widgets (GtkWidget *widget,
GtkSnapshot *snapshot)
{
gboolean needs_clip;
int width = gtk_widget_get_width (widget);
int height = gtk_widget_get_height (widget);
GtkCssStyle *style;
GtkWidget *child;
GtkBorder boxes[4];
const GdkRGBA colors[4] = {
{0.7, 0.0, 0.7, 0.6}, /* Padding */
{0.0, 0.0, 0.0, 0.0}, /* Border */
{0.7, 0.7, 0.0, 0.6}, /* CSS Margin */
{0.7, 0.0, 0.0, 0.6}, /* Widget Margin */
};
int i;
if (!gtk_widget_get_mapped (widget))
return;
G_STATIC_ASSERT (G_N_ELEMENTS (boxes) == G_N_ELEMENTS (colors));
style = gtk_css_node_get_style (gtk_widget_get_css_node (widget));
get_box_padding (style, &boxes[0]);
get_box_border (style, &boxes[1]);
get_box_margin (style, &boxes[2]);
/* TODO: Eh, left = start? RTL? */
boxes[3].left = gtk_widget_get_margin_start (widget);
boxes[3].top = gtk_widget_get_margin_top (widget);
boxes[3].right = gtk_widget_get_margin_end (widget);
boxes[3].bottom = gtk_widget_get_margin_bottom (widget);
/* width/height are the content size and we're going to grow that
* as we're drawing the boxes, as well as offset the origin.
* Right now we're at the widget's own origin.
*/
gtk_snapshot_save (snapshot);
gtk_snapshot_push_debug (snapshot, "Widget layout debugging");
for (i = 0; i < G_N_ELEMENTS (boxes); i ++)
{
const GdkRGBA *color = &colors[i];
const GtkBorder *box = &boxes[i];
gtk_snapshot_append_color (snapshot, color,
&GRAPHENE_RECT_INIT ( 0, - box->top, width, box->top));
gtk_snapshot_append_color (snapshot, color,
&GRAPHENE_RECT_INIT (width, 0, box->right, height));
gtk_snapshot_append_color (snapshot, color,
&GRAPHENE_RECT_INIT (0, height, width, box->bottom));
gtk_snapshot_append_color (snapshot, color,
&GRAPHENE_RECT_INIT (- box->left, 0, box->left, height));
/* Grow box + offset */
width += box->left + box->right;
height += box->top + box->bottom;
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (- box->left, - box->top));
}
gtk_snapshot_pop (snapshot);
needs_clip = gtk_widget_get_overflow (widget) == GTK_OVERFLOW_HIDDEN &&
gtk_widget_get_first_child (widget) != NULL;
if (needs_clip)
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT (0, 0, gtk_widget_get_width (widget), gtk_widget_get_height (widget)));
/* Recurse into child widgets */
for (child = gtk_widget_get_first_child (widget);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
gtk_snapshot_save (snapshot);
gtk_snapshot_transform (snapshot, child->priv->transform);
recurse_child_widgets (child, snapshot);
gtk_snapshot_restore (snapshot);
}
if (needs_clip)
gtk_snapshot_pop (snapshot);
gtk_snapshot_restore (snapshot);
}
static void
gtk_layout_overlay_snapshot (GtkInspectorOverlay *overlay,
GtkSnapshot *snapshot,
GskRenderNode *node,
GtkWidget *widget)
{
recurse_child_widgets (widget, snapshot);
}
static void
gtk_layout_overlay_init (GtkLayoutOverlay *self)
{
}
static void
gtk_layout_overlay_class_init (GtkLayoutOverlayClass *klass)
{
GtkInspectorOverlayClass *overlay_class = (GtkInspectorOverlayClass *)klass;
overlay_class->snapshot = gtk_layout_overlay_snapshot;
}
GtkInspectorOverlay *
gtk_layout_overlay_new (void)
{
return g_object_new (GTK_TYPE_LAYOUT_OVERLAY, NULL);
}
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