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#include "config.h"
#include "layoutoverlay.h"
#include "gtkwidgetprivate.h"
#include "gtkcssstyleprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcssnumbervalueprivate.h"
static const GdkRGBA WIDGET_MARGIN_COLOR = {0.7, 0, 0, 0.6};
static const GdkRGBA MARGIN_COLOR = {0.7, 0.7, 0, 0.6};
static const GdkRGBA PADDING_COLOR = {0.7, 0, 0.7, 0.6};
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 (GtkCssStyle *style,
guint property)
{
double d = _gtk_css_number_value_get (gtk_css_style_get_value (style, property), 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, GTK_CSS_PROPERTY_MARGIN_TOP);
margin->left = get_number (style, GTK_CSS_PROPERTY_MARGIN_LEFT);
margin->bottom = get_number (style, GTK_CSS_PROPERTY_MARGIN_BOTTOM);
margin->right = get_number (style, GTK_CSS_PROPERTY_MARGIN_RIGHT);
}
static void
get_box_border (GtkCssStyle *style,
GtkBorder *border)
{
border->top = get_number (style, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH);
border->left = get_number (style, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH);
border->bottom = get_number (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH);
border->right = get_number (style, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH);
}
static void
get_box_padding (GtkCssStyle *style,
GtkBorder *border)
{
border->top = get_number (style, GTK_CSS_PROPERTY_PADDING_TOP);
border->left = get_number (style, GTK_CSS_PROPERTY_PADDING_LEFT);
border->bottom = get_number (style, GTK_CSS_PROPERTY_PADDING_BOTTOM);
border->right = get_number (style, GTK_CSS_PROPERTY_PADDING_RIGHT);
}
static void
recurse_child_widgets (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkBorder margin, border, padding;
GtkBorder widget_margin;
GtkAllocation allocation;
graphene_rect_t bounds;
GtkCssStyle *style;
GtkWidget *child;
if (!gtk_widget_get_mapped (widget))
return;
style = gtk_css_node_get_style (gtk_widget_get_css_node (widget));
get_box_margin (style, &margin);
get_box_border (style, &border);
get_box_padding (style, &padding);
/* TODO: Eh, left = start? RTL? */
widget_margin.left = gtk_widget_get_margin_start (widget);
widget_margin.top = gtk_widget_get_margin_top (widget);
widget_margin.right = gtk_widget_get_margin_end (widget);
widget_margin.bottom = gtk_widget_get_margin_bottom (widget);
gtk_widget_get_allocation (widget, &allocation);
gtk_snapshot_save (snapshot);
/* Offset for all of the drawing done here. We assume cooridinates relative to
* the widget allocation, not the content allocation. */
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (allocation.x, allocation.y));
/* Now do all the stuff */
gtk_snapshot_push_debug (snapshot, "Widget layout debugging");
/* Widget margins */
graphene_rect_init (&bounds,
0, -widget_margin.top,
allocation.width, widget_margin.top);
gtk_snapshot_append_color (snapshot, &WIDGET_MARGIN_COLOR, &bounds);
graphene_rect_init (&bounds,
0, allocation.height,
allocation.width, widget_margin.bottom);
gtk_snapshot_append_color (snapshot, &WIDGET_MARGIN_COLOR, &bounds);
graphene_rect_init (&bounds,
-widget_margin.left, 0,
widget_margin.left, allocation.height);
gtk_snapshot_append_color (snapshot, &WIDGET_MARGIN_COLOR, &bounds);
graphene_rect_init (&bounds,
allocation.width, 0,
widget_margin.right, allocation.height);
gtk_snapshot_append_color (snapshot, &WIDGET_MARGIN_COLOR, &bounds);
/* CSS Margins */
graphene_rect_init (&bounds,
0, 0,
allocation.width, margin.top);
gtk_snapshot_append_color (snapshot, &MARGIN_COLOR, &bounds);
graphene_rect_init (&bounds,
0, allocation.height - margin.bottom,
allocation.width, margin.bottom);
gtk_snapshot_append_color (snapshot, &MARGIN_COLOR, &bounds);
graphene_rect_init (&bounds,
0, margin.top,
margin.left, allocation.height - margin.top - margin.bottom);
gtk_snapshot_append_color (snapshot, &MARGIN_COLOR, &bounds);
graphene_rect_init (&bounds,
allocation.width - margin.right, margin.top,
margin.right, allocation.height - margin.top - margin.bottom);
gtk_snapshot_append_color (snapshot, &MARGIN_COLOR, &bounds);
/* Padding */
graphene_rect_init (&bounds,
margin.left + border.left,
margin.top + border.top,
allocation.width - margin.left - margin.right - border.left - border.right,
padding.top);
gtk_snapshot_append_color (snapshot, &PADDING_COLOR, &bounds);
graphene_rect_init (&bounds,
margin.left + border.left,
allocation.height - margin.bottom - border.bottom - padding.bottom,
allocation.width - margin.left - margin.right - border.left - border.right,
padding.bottom);
gtk_snapshot_append_color (snapshot, &PADDING_COLOR, &bounds);
graphene_rect_init (&bounds,
margin.left + border.left,
margin.top + border.top + padding.top,
padding.left,
allocation.height - margin.top - margin.bottom - border.top - border.bottom - padding.top - padding.bottom);
gtk_snapshot_append_color (snapshot, &PADDING_COLOR, &bounds);
graphene_rect_init (&bounds,
allocation.width - margin.right - border.right - padding.right,
margin.top + border.top + padding.top,
padding.right,
allocation.height - margin.top - margin.bottom - border.top - border.bottom - padding.top - padding.bottom);
gtk_snapshot_append_color (snapshot, &PADDING_COLOR, &bounds);
gtk_snapshot_pop (snapshot);
/* Recurse into child widgets */
for (child = gtk_widget_get_first_child (widget);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
const int offset_x = margin.left + border.left + padding.left;
const int offset_y = margin.top + border.top + padding.top;
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (offset_x, offset_y));
recurse_child_widgets (child, 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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