+++ /dev/null
-/*
- * Copyright © 2015 Red Hat Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- *
- * Authors: Benjamin Otte <otte@gnome.org>
- */
-
-#include "config.h"
-
-#include "gtkcssgadgetprivate.h"
-
-#include <math.h>
-
-#include "gtkcssnumbervalueprivate.h"
-#include "gtkcssshadowsvalueprivate.h"
-#include "gtkcssstyleprivate.h"
-#include "gtkcssstylepropertyprivate.h"
-#include "gtkcsswidgetnodeprivate.h"
-#include "gtkrenderbackgroundprivate.h"
-#include "gtkrenderborderprivate.h"
-#include "gtkwidgetprivate.h"
-#include "gtkdebug.h"
-#include "gtkprivate.h"
-
-/*
- * Gadgets are 'next-generation widgets' - they combine a CSS node
- * for style matching with geometry management and drawing. Each gadget
- * corresponds to 'CSS box'. Compared to traditional widgets, they are more
- * like building blocks - a typical GTK+ widget will have multiple gadgets,
- * for example a check button has its main gadget, and sub-gadgets for
- * the checkmark and the text.
- *
- * Gadgets are not themselves hierarchically organized, but it is common
- * to have a 'main' gadget, which gets used by the widgets size_allocate,
- * get_preferred_width, etc. and draw callbacks, and which in turn calls out
- * to the sub-gadgets. This call tree might extend further if there are
- * sub-sub-gadgets that a allocated relative to sub-gadgets. In typical
- * situations, the callback chain will reflect the tree structure of the
- * gadgets CSS nodes.
- *
- * Geometry management - Gadgets implement much of the CSS box model for you:
- * margins, border, padding, shadows, min-width/height are all applied automatically.
- *
- * Drawing - Gadgets implement standardized CSS drawing for you: background,
- * shadows and border are drawn before any custom drawing, and the focus outline
- * is (optionally) drawn afterwards.
- *
- * Invalidation - Gadgets sit 'between' widgets and CSS nodes, and connect
- * to the nodes ::style-changed signal and trigger appropriate invalidations
- * on the widget side.
- */
-
-typedef struct _GtkCssGadgetPrivate GtkCssGadgetPrivate;
-struct _GtkCssGadgetPrivate {
- GtkCssNode *node;
- GtkWidget *owner;
- GtkAllocation allocated_size;
- gint allocated_baseline;
- GtkAllocation clip;
-};
-
-enum {
- PROP_0,
- PROP_NODE,
- PROP_OWNER,
- /* add more */
- NUM_PROPERTIES
-};
-
-static GParamSpec *properties[NUM_PROPERTIES];
-
-G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkCssGadget, gtk_css_gadget, G_TYPE_OBJECT,
- G_ADD_PRIVATE (GtkCssGadget))
-
-static void
-gtk_css_gadget_real_get_preferred_size (GtkCssGadget *gadget,
- GtkOrientation orientation,
- gint for_size,
- gint *minimum,
- gint *natural,
- gint *minimum_baseline,
- gint *natural_baseline)
-{
- *minimum = 0;
- *natural = 0;
-
- if (minimum_baseline)
- *minimum_baseline = 0;
- if (natural_baseline)
- *natural_baseline = 0;
-}
-
-static void
-gtk_css_gadget_real_allocate (GtkCssGadget *gadget,
- const GtkAllocation *allocation,
- int baseline,
- GtkAllocation *out_clip)
-{
- *out_clip = *allocation;
-}
-
-static gboolean
-gtk_css_gadget_real_snapshot (GtkCssGadget *gadget,
- GtkSnapshot *snapshot,
- int x,
- int y,
- int width,
- int height)
-{
- return FALSE;
-}
-
-static void
-gtk_css_gadget_real_style_changed (GtkCssGadget *gadget,
- GtkCssStyleChange *change)
-{
- if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_SIZE))
- gtk_css_gadget_queue_resize (gadget);
- else if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_CLIP))
- gtk_css_gadget_queue_allocate (gadget);
- else if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_REDRAW))
- gtk_css_gadget_queue_draw (gadget);
-}
-
-static void
-gtk_css_gadget_get_property (GObject *object,
- guint property_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (GTK_CSS_GADGET (object));
-
- switch (property_id)
- {
- case PROP_NODE:
- g_value_set_object (value, priv->node);
- break;
-
- case PROP_OWNER:
- g_value_set_object (value, priv->owner);
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
- break;
- }
-}
-
-static void
-gtk_css_gadget_node_style_changed_cb (GtkCssNode *node,
- GtkCssStyleChange *change,
- GtkCssGadget *gadget)
-{
- GtkCssGadgetClass *klass = GTK_CSS_GADGET_GET_CLASS (gadget);
-
- klass->style_changed (gadget, change);
-}
-
-static gboolean
-gtk_css_gadget_should_connect_style_changed (GtkCssNode *node)
-{
- /* Delegate to WidgetClass->style_changed */
- if (GTK_IS_CSS_WIDGET_NODE (node))
- return FALSE;
-
- return TRUE;
-}
-
-static void
-gtk_css_gadget_unset_node (GtkCssGadget *gadget)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- if (priv->node)
- {
- if (gtk_css_gadget_should_connect_style_changed (priv->node))
- {
- if (g_signal_handlers_disconnect_by_func (priv->node, gtk_css_gadget_node_style_changed_cb, gadget) != 1)
- {
- g_assert_not_reached ();
- }
- }
- g_object_unref (priv->node);
- priv->node = NULL;
- }
-}
-
-void
-gtk_css_gadget_set_node (GtkCssGadget *gadget,
- GtkCssNode *node)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- gtk_css_gadget_unset_node (gadget);
-
- if (node != NULL)
- priv->node = g_object_ref (node);
- else
- priv->node = gtk_css_node_new ();
-
- if (gtk_css_gadget_should_connect_style_changed (priv->node))
- {
- g_signal_connect_after (priv->node,
- "style-changed",
- G_CALLBACK (gtk_css_gadget_node_style_changed_cb),
- gadget);
- }
-}
-
-static void
-gtk_css_gadget_set_property (GObject *object,
- guint property_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- GtkCssGadget *gadget = GTK_CSS_GADGET (object);
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- switch (property_id)
- {
- case PROP_NODE:
- gtk_css_gadget_set_node (gadget, g_value_get_object (value));
- break;
-
- case PROP_OWNER:
- priv->owner = g_value_get_object (value);
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
- break;
- }
-}
-
-static void
-gtk_css_gadget_finalize (GObject *object)
-{
- GtkCssGadget *gadget = GTK_CSS_GADGET (object);
-
- gtk_css_gadget_unset_node (gadget);
-
- G_OBJECT_CLASS (gtk_css_gadget_parent_class)->finalize (object);
-}
-
-static void
-gtk_css_gadget_class_init (GtkCssGadgetClass *klass)
-{
- GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
- object_class->get_property = gtk_css_gadget_get_property;
- object_class->set_property = gtk_css_gadget_set_property;
- object_class->finalize = gtk_css_gadget_finalize;
-
- klass->get_preferred_size = gtk_css_gadget_real_get_preferred_size;
- klass->allocate = gtk_css_gadget_real_allocate;
- klass->snapshot = gtk_css_gadget_real_snapshot;
- klass->style_changed = gtk_css_gadget_real_style_changed;
-
- properties[PROP_NODE] = g_param_spec_object ("node", "Node",
- "CSS node",
- GTK_TYPE_CSS_NODE,
- G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
- G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
- properties[PROP_OWNER] = g_param_spec_object ("owner", "Owner",
- "Widget that created and owns this gadget",
- GTK_TYPE_WIDGET,
- G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
- G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
-
-
- g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
-}
-
-static void
-gtk_css_gadget_init (GtkCssGadget *gadget)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- priv->allocated_size.width = -1;
- priv->allocated_size.height = -1;
- priv->allocated_baseline = -1;
-}
-
-/**
- * gtk_css_gadget_get_node:
- * @gadget: a #GtkCssGadget
- *
- * Get the CSS node for this gadget.
- *
- * Returns: (transfer none): the CSS node
- */
-GtkCssNode *
-gtk_css_gadget_get_node (GtkCssGadget *gadget)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- return priv->node;
-}
-
-/**
- * gtk_css_gadget_get_style:
- * @gadget: a #GtkCssGadget
- *
- * Get the CSS style for this gadget.
- *
- * Returns: (transfer none): the CSS style
- */
-GtkCssStyle *
-gtk_css_gadget_get_style (GtkCssGadget *gadget)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- return gtk_css_node_get_style (priv->node);
-}
-
-/**
- * gtk_css_gadget_get_owner:
- * @gadget: a #GtkCssGadget
- *
- * Get the widget to which this gadget belongs.
- *
- * Returns: (transfer none): the widget to which @gadget belongs
- */
-GtkWidget *
-gtk_css_gadget_get_owner (GtkCssGadget *gadget)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- return priv->owner;
-}
-
-void
-gtk_css_gadget_set_visible (GtkCssGadget *gadget,
- gboolean visible)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- gtk_css_node_set_visible (priv->node, visible);
-}
-
-gboolean
-gtk_css_gadget_get_visible (GtkCssGadget *gadget)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- return gtk_css_node_get_visible (priv->node);
-}
-
-/**
- * gtk_css_gadget_add_class:
- * @gadget: a #GtkCssGadget
- * @name: class name to use in CSS matching
- *
- * Adds a style class to the gadgets CSS node.
- */
-void
-gtk_css_gadget_add_class (GtkCssGadget *gadget,
- const char *name)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
- GQuark quark;
-
- quark = g_quark_from_string (name);
-
- gtk_css_node_add_class (priv->node, quark);
-}
-
-/**
- * gtk_css_gadget_remove_class:
- * @gadget: a #GtkCssGadget
- * @name: class name
- *
- * Removes a style class from the gadgets CSS node.
- */
-void
-gtk_css_gadget_remove_class (GtkCssGadget *gadget,
- const char *name)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
- GQuark quark;
-
- quark = g_quark_try_string (name);
- if (quark == 0)
- return;
-
- gtk_css_node_remove_class (priv->node, quark);
-}
-
-/**
- * gtk_css_gadget_set_state:
- * @gadget: a #GtkCssGadget
- * @state: The new state
- *
- * Sets the state of the gadget's CSS node.
- */
-void
-gtk_css_gadget_set_state (GtkCssGadget *gadget,
- GtkStateFlags state)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- gtk_css_node_set_state (priv->node, state);
-}
-
-/**
- * gtk_css_gadget_add_state:
- * @gadget: a #GtkCssGadget
- * @state: The state to add
- *
- * Adds the given states to the states of gadget's CSS node. Other states
- * will be kept as they are.
- */
-void
-gtk_css_gadget_add_state (GtkCssGadget *gadget,
- GtkStateFlags state)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- gtk_css_node_set_state (priv->node, gtk_css_node_get_state (priv->node) | state);
-}
-
-/**
- * gtk_css_gadget_remove_state:
- * @gadget: a #GtkCssGadget
- * @state: The state to remove
- *
- * Adds the given states to the states of gadget's CSS node. Other states
- * will be kept as they are.
- */
-void
-gtk_css_gadget_remove_state (GtkCssGadget *gadget,
- GtkStateFlags state)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- gtk_css_node_set_state (priv->node, gtk_css_node_get_state (priv->node) & ~state);
-}
-
-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 gboolean
-allocation_contains_point (GtkAllocation *allocation,
- gint x,
- gint y)
-{
- return (x >= allocation->x) &&
- (x < allocation->x + allocation->width) &&
- (y >= allocation->y) &&
- (y < allocation->y + allocation->height);
-}
-
-static void
-shift_allocation (GtkCssGadget *gadget,
- GtkAllocation *allocation)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- if (priv->owner && !_gtk_widget_get_has_window (priv->owner))
- {
- GtkAllocation widget_alloc;
- _gtk_widget_get_allocation (priv->owner, &widget_alloc);
- allocation->x -= widget_alloc.x;
- allocation->y -= widget_alloc.y;
- }
-}
-
-/**
- * gtk_css_gadget_margin_box_contains_point:
- * @gadget: the #GtkCssGadget being tested
- * @x: X coordinate of the testing point
- * @y: Y coordinate of the testing point
- *
- * Checks whether the point at the provided coordinates is contained within the
- * margin box of the gadget. The (X, Y) are relative to the gadget
- * origin.
- *
- * Returns: %TRUE if the point at (X, Y) is contained within the margin
- * box of the @gadget.
- */
-gboolean
-gtk_css_gadget_margin_box_contains_point (GtkCssGadget *gadget,
- int x,
- int y)
-{
- GtkAllocation margin_box;
- gtk_css_gadget_get_margin_box (gadget, &margin_box);
- return allocation_contains_point (&margin_box, x, y);
-}
-
-/**
- * gtk_css_gadget_border_box_contains_point:
- * @gadget: the #GtkCssGadget being tested
- * @x: X coordinate of the testing point
- * @y: Y coordinate of the testing point
- *
- * Checks whether the point at the provided coordinates is contained within the
- * border box of the gadget. The (X, Y) are relative to the gadget
- * origin.
- *
- * Returns: %TRUE if the point at (X, Y) is contained within the border
- * box of the @gadget.
- */
-gboolean
-gtk_css_gadget_border_box_contains_point (GtkCssGadget *gadget,
- int x,
- int y)
-{
- GtkAllocation border_box;
- gtk_css_gadget_get_border_box (gadget, &border_box);
- return allocation_contains_point (&border_box, x, y);
-}
-
-/**
- * gtk_css_gadget_content_box_contains_point:
- * @gadget: the #GtkCssGadget being tested
- * @x: X coordinate of the testing point
- * @y: Y coordinate of the testing point
- *
- * Checks whether the point at the provided coordinates is contained within the
- * content box of the gadget. The (X, Y) are relative to the gadget
- * origin.
- *
- * Returns: %TRUE if the point at (X, Y) is contained within the content
- * box of the @gadget.
- */
-gboolean
-gtk_css_gadget_content_box_contains_point (GtkCssGadget *gadget,
- int x,
- int y)
-{
- GtkAllocation content_box;
- gtk_css_gadget_get_content_box (gadget, &content_box);
- return allocation_contains_point (&content_box, x, y);
-}
-
-/**
- * gtk_css_gadget_get_preferred_size:
- * @gadget: the #GtkCssGadget whose size is requested
- * @orientation: whether a width (ie horizontal) or height (ie vertical) size is requested
- * @for_size: the available size in the opposite direction, or -1
- * @minimum: (nullable): return location for the minimum size
- * @natural: (nullable): return location for the natural size
- * @minimum_baseline: (nullable): return location for the baseline at minimum size
- * @natural_baseline: (nullable): return location for the baseline at natural size
- *
- * Gets the gadgets minimum and natural size (and, optionally, baseline)
- * in the given orientation for the specified size in the opposite direction.
- *
- * The returned values include CSS padding, border and margin in addition to the
- * gadgets content size, and respect the CSS min-with or min-height properties.
- *
- * The @for_size is assumed to include CSS padding, border and margins as well.
- */
-void
-gtk_css_gadget_get_preferred_size (GtkCssGadget *gadget,
- GtkOrientation orientation,
- gint for_size,
- gint *minimum,
- gint *natural,
- gint *minimum_baseline,
- gint *natural_baseline)
-{
- GtkCssStyle *style;
- GtkBorder margin, border, padding;
- int min_size, extra_size, extra_opposite, extra_baseline;
- int unused_minimum, unused_natural;
- int forced_minimum, forced_natural;
- int min_for_size;
-
- if (minimum == NULL)
- minimum = &unused_minimum;
- if (natural == NULL)
- natural = &unused_natural;
-
- if (!gtk_css_gadget_get_visible (gadget))
- {
- *minimum = 0;
- *natural = 0;
- if (minimum_baseline)
- *minimum_baseline = -1;
- if (natural_baseline)
- *natural_baseline = -1;
- return;
- }
-
- style = gtk_css_gadget_get_style (gadget);
- get_box_margin (style, &margin);
- get_box_border (style, &border);
- get_box_padding (style, &padding);
- if (orientation == GTK_ORIENTATION_HORIZONTAL)
- {
- extra_size = margin.left + margin.right + border.left + border.right + padding.left + padding.right;
- extra_opposite = margin.top + margin.bottom + border.top + border.bottom + padding.top + padding.bottom;
- extra_baseline = margin.left + border.left + padding.left;
- min_size = get_number (style, GTK_CSS_PROPERTY_MIN_WIDTH);
- min_for_size = get_number (style, GTK_CSS_PROPERTY_MIN_HEIGHT);
- }
- else
- {
- extra_size = margin.top + margin.bottom + border.top + border.bottom + padding.top + padding.bottom;
- extra_opposite = margin.left + margin.right + border.left + border.right + padding.left + padding.right;
- extra_baseline = margin.top + border.top + padding.top;
- min_size = get_number (style, GTK_CSS_PROPERTY_MIN_HEIGHT);
- min_for_size = get_number (style, GTK_CSS_PROPERTY_MIN_WIDTH);
- }
-
- if (for_size > -1)
- {
- if (for_size < min_for_size)
- g_warning ("for_size smaller than min-size (%d < %d) "
- "while measuring gadget (node %s, owner %s)",
- for_size, min_for_size,
- gtk_css_node_get_name (gtk_css_gadget_get_node (gadget)),
- G_OBJECT_TYPE_NAME (gtk_css_gadget_get_owner (gadget)));
-
- for_size = MAX (0, for_size - extra_opposite);
- }
-
- if (minimum_baseline)
- *minimum_baseline = -1;
- if (natural_baseline)
- *natural_baseline = -1;
-
- GTK_CSS_GADGET_GET_CLASS (gadget)->get_preferred_size (gadget,
- orientation,
- for_size,
- minimum, natural,
- minimum_baseline, natural_baseline);
-
- g_warn_if_fail (*minimum <= *natural);
-
- forced_minimum = MAX (*minimum, min_size);
- forced_natural = MAX (*natural, min_size);
-
- if (minimum_baseline && *minimum_baseline > -1)
- {
- *minimum_baseline += 0.5 * (forced_minimum - *minimum);
- *minimum_baseline = MAX (0, *minimum_baseline + extra_baseline);
- }
- if (natural_baseline && *natural_baseline > -1)
- {
- *natural_baseline += 0.5 * (forced_natural - *natural);
- *natural_baseline = MAX (0, *natural_baseline + extra_baseline);
- }
-
- *minimum = MAX (0, forced_minimum + extra_size);
- *natural = MAX (0, forced_natural + extra_size);
-
-}
-
-/**
- * gtk_css_gadget_allocate:
- * @gadget: the #GtkCssGadget to allocate
- * @allocation: the allocation
- * @baseline: the baseline for the allocation
- * @out_clip: (out): return location for the gadgets clip region
- *
- * Allocates the gadget.
- *
- * The @allocation is assumed to include CSS padding, border and margin.
- * The gadget content will be allocated a smaller area that excludes these.
- * The @out_clip includes the shadow extents of the gadget in addition to
- * any content clip.
- */
-void
-gtk_css_gadget_allocate (GtkCssGadget *gadget,
- const GtkAllocation *allocation,
- int baseline,
- GtkAllocation *out_clip)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
- GtkAllocation content_allocation;
- GtkAllocation tmp_clip;
- GtkAllocation content_clip = { 0, 0, 0, 0 };
- GtkBorder margin, border, padding, shadow, extents;
- GtkCssStyle *style;
-
- g_return_if_fail (out_clip != NULL);
-
- if (!gtk_css_gadget_get_visible (gadget))
- {
- out_clip->x = 0;
- out_clip->y = 0;
- out_clip->width = 0;
- out_clip->height = 0;
- priv->clip = *out_clip;
- return;
- }
-
- priv->allocated_size = *allocation;
- priv->allocated_baseline = baseline;
-
- style = gtk_css_gadget_get_style (gadget);
- get_box_margin (style, &margin);
- get_box_border (style, &border);
- get_box_padding (style, &padding);
- extents.top = margin.top + border.top + padding.top;
- extents.right = margin.right + border.right + padding.right;
- extents.bottom = margin.bottom + border.bottom + padding.bottom;
- extents.left = margin.left + border.left + padding.left;
-
- content_allocation.x = allocation->x + extents.left;
- content_allocation.y = allocation->y + extents.top;
- content_allocation.width = allocation->width - extents.left - extents.right;
- content_allocation.height = allocation->height - extents.top - extents.bottom;
-
- if (baseline >= 0)
- baseline -= extents.top;
-
- if (content_allocation.width < 0)
- {
- g_warning ("Negative content width %d (allocation %d, extents %dx%d) "
- "while allocating gadget (node %s, owner %s)",
- content_allocation.width, allocation->width,
- extents.left, extents.right,
- gtk_css_node_get_name (gtk_css_gadget_get_node (gadget)),
- G_OBJECT_TYPE_NAME (gtk_css_gadget_get_owner (gadget)));
- content_allocation.width = 0;
- }
-
- if (content_allocation.height < 0)
- {
- g_warning ("Negative content height %d (allocation %d, extents %dx%d) "
- "while allocating gadget (node %s, owner %s)",
- content_allocation.height, allocation->height,
- extents.top, extents.bottom,
- gtk_css_node_get_name (gtk_css_gadget_get_node (gadget)),
- G_OBJECT_TYPE_NAME (gtk_css_gadget_get_owner (gadget)));
- content_allocation.height = 0;
- }
-
- GTK_CSS_GADGET_GET_CLASS (gadget)->allocate (gadget, &content_allocation, baseline, &content_clip);
-
- _gtk_css_shadows_value_get_extents (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BOX_SHADOW), &shadow);
-
- out_clip->x = allocation->x + margin.left - shadow.left;
- out_clip->y = allocation->y + margin.top - shadow.top;
- out_clip->width = MAX (0, allocation->width - margin.left - margin.right + shadow.left + shadow.right);
- out_clip->height = MAX (0, allocation->height - margin.top - margin.bottom + shadow.top + shadow.bottom);
-
- if (content_clip.width > 0 && content_clip.height > 0)
- gdk_rectangle_union (&content_clip, out_clip, out_clip);
-
- if (gtk_css_style_render_outline_get_clip (style,
- allocation->x + margin.left,
- allocation->y + margin.top,
- allocation->width - margin.left - margin.right,
- allocation->height - margin.top - margin.bottom,
- &tmp_clip))
- gdk_rectangle_union (&tmp_clip, out_clip, out_clip);
-
- priv->clip = *out_clip;
-}
-
-/**
- * gtk_css_gadget_snapshot:
- * @gadget: The gadget to snapshot
- * @snapshot: The snapshot to use
- *
- * Will draw the gadget at the position allocated via
- * gtk_css_gadget_allocate(). It is your responsibility to make
- * sure that those 2 coordinate systems match.
- *
- * The drawing virtual function will be passed an untransformed @cr.
- * This is important because functions like
- * gtk_container_propagate_draw() depend on that.
- */
-void
-gtk_css_gadget_snapshot (GtkCssGadget *gadget,
- GtkSnapshot *snapshot)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
- GtkBorder margin, border, padding;
- gboolean draw_focus = FALSE;
- GtkCssStyle *style;
- int x, y, width, height;
- int contents_x, contents_y, contents_width, contents_height;
- GtkAllocation margin_box, clip;
-
- if (!gtk_css_gadget_get_visible (gadget))
- return;
-
- clip = priv->clip;
- shift_allocation (gadget, &clip);
- if (gtk_snapshot_clips_rect (snapshot, &clip))
- return;
-
- gtk_css_gadget_get_margin_box (gadget, &margin_box);
-
- x = margin_box.x;
- y = margin_box.y;
- width = margin_box.width;
- height = margin_box.height;
-
- if (width < 0 || height < 0)
- {
- g_warning ("Drawing a gadget with negative dimensions. "
- "Did you forget to allocate a size? (node %s owner %s)",
- gtk_css_node_get_name (gtk_css_gadget_get_node (gadget)),
- G_OBJECT_TYPE_NAME (gtk_css_gadget_get_owner (gadget)));
- x = 0;
- y = 0;
- width = gtk_widget_get_allocated_width (priv->owner);
- height = gtk_widget_get_allocated_height (priv->owner);
- }
-
- style = gtk_css_gadget_get_style (gadget);
- get_box_margin (style, &margin);
- get_box_border (style, &border);
- get_box_padding (style, &padding);
-
- gtk_snapshot_offset (snapshot, x + margin.left, y + margin.top);
- gtk_css_style_snapshot_background (style,
- snapshot,
- width - margin.left - margin.right,
- height - margin.top - margin.bottom);
- gtk_css_style_snapshot_border (style,
- snapshot,
- width - margin.left - margin.right,
- height - margin.top - margin.bottom);
- gtk_snapshot_offset (snapshot, - x - margin.left, - y - margin.top);
-
- contents_x = x + margin.left + border.left + padding.left;
- contents_y = y + margin.top + border.top + padding.top;
- contents_width = width - margin.left - margin.right - border.left - border.right - padding.left - padding.right;
- contents_height = height - margin.top - margin.bottom - border.top - border.bottom - padding.top - padding.bottom;
-
- if (contents_width > 0 && contents_height > 0)
- draw_focus = GTK_CSS_GADGET_GET_CLASS (gadget)->snapshot (gadget,
- snapshot,
- contents_x, contents_y,
- contents_width, contents_height);
-
- if (draw_focus)
- {
- gtk_snapshot_offset (snapshot, x + margin.left, y + margin.top);
- gtk_css_style_snapshot_outline (style,
- snapshot,
- width - margin.left - margin.right,
- height - margin.top - margin.bottom);
- gtk_snapshot_offset (snapshot, - x - margin.left, - y - margin.top);
- }
-}
-
-void
-gtk_css_gadget_queue_resize (GtkCssGadget *gadget)
-{
- g_return_if_fail (GTK_IS_CSS_GADGET (gadget));
-
- gtk_widget_queue_resize (gtk_css_gadget_get_owner (gadget));
-}
-
-void
-gtk_css_gadget_queue_allocate (GtkCssGadget *gadget)
-{
- g_return_if_fail (GTK_IS_CSS_GADGET (gadget));
-
- gtk_widget_queue_allocate (gtk_css_gadget_get_owner (gadget));
-}
-
-void
-gtk_css_gadget_queue_draw (GtkCssGadget *gadget)
-{
- g_return_if_fail (GTK_IS_CSS_GADGET (gadget));
-
- /* XXX: Only invalidate clip here */
- gtk_widget_queue_draw (gtk_css_gadget_get_owner (gadget));
-}
-
-/**
- * gtk_css_gadget_get_margin_box:
- * @gadget: a #GtkCssGadget
- * @box: (out): Return location for gadget's the margin box
- *
- * Returns the margin box of the gadget. The box coordinates are relative to
- * the gadget origin. Compare with gtk_css_gadget_get_margin_allocation(),
- * which returns the margin box in the widget allocation coordinates.
- */
-void
-gtk_css_gadget_get_margin_box (GtkCssGadget *gadget,
- GtkAllocation *box)
-{
- gtk_css_gadget_get_margin_allocation (gadget, box, NULL);
- shift_allocation (gadget, box);
-}
-
-/**
- * gtk_css_gadget_get_border_box:
- * @gadget: a #GtkCssGadget
- * @box: (out): Return location for gadget's the border box
- *
- * Returns the border box of the gadget. The box coordinates are relative to
- * the gadget origin. Compare with gtk_css_gadget_get_border_allocation(),
- * which returns the border box in the widget allocation coordinates.
- */
-void
-gtk_css_gadget_get_border_box (GtkCssGadget *gadget,
- GtkAllocation *box)
-{
- gtk_css_gadget_get_border_allocation (gadget, box, NULL);
- shift_allocation (gadget, box);
-}
-
-/**
- * gtk_css_gadget_get_content_box:
- * @gadget: a #GtkCssGadget
- * @box: (out): Return location for gadget's the content box
- *
- * Returns the content box of the gadget. The box coordinates are relative to
- * the gadget origin. Compare with gtk_css_gadget_get_content_allocation(),
- * which returns the content box in the widget allocation coordinates.
- */
-void
-gtk_css_gadget_get_content_box (GtkCssGadget *gadget,
- GtkAllocation *box)
-{
- gtk_css_gadget_get_content_allocation (gadget, box, NULL);
- shift_allocation (gadget, box);
-}
-
-void
-gtk_css_gadget_get_margin_allocation (GtkCssGadget *gadget,
- GtkAllocation *allocation,
- int *baseline)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
-
- gtk_internal_return_if_fail (GTK_IS_CSS_GADGET (gadget));
-
- if (!gtk_css_gadget_get_visible (gadget))
- {
- if (allocation)
- allocation->x = allocation->y = allocation->width = allocation->height = 0;
- if (baseline)
- *baseline = -1;
- return;
- }
-
- if (allocation)
- *allocation = priv->allocated_size;
- if (baseline)
- *baseline = priv->allocated_baseline;
-}
-
-void
-gtk_css_gadget_get_border_allocation (GtkCssGadget *gadget,
- GtkAllocation *allocation,
- int *baseline)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
- GtkBorder margin;
-
- gtk_internal_return_if_fail (GTK_IS_CSS_GADGET (gadget));
-
- if (!gtk_css_gadget_get_visible (gadget))
- {
- if (allocation)
- allocation->x = allocation->y = allocation->width = allocation->height = 0;
- if (baseline)
- *baseline = -1;
- return;
- }
-
- get_box_margin (gtk_css_gadget_get_style (gadget), &margin);
-
- if (allocation)
- {
- allocation->x = priv->allocated_size.x + margin.left;
- allocation->y = priv->allocated_size.y + margin.top;
- allocation->width = MAX (0, priv->allocated_size.width - margin.left - margin.right);
- allocation->height = MAX (0, priv->allocated_size.height - margin.top - margin.bottom);
- }
- if (baseline)
- {
- if (priv->allocated_baseline >= 0)
- *baseline = priv->allocated_baseline - margin.top;
- else
- *baseline = -1;
- }
-}
-
-void
-gtk_css_gadget_get_content_allocation (GtkCssGadget *gadget,
- GtkAllocation *allocation,
- int *baseline)
-{
- GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
- GtkBorder margin, border, padding, extents;
- GtkCssStyle *style;
-
- gtk_internal_return_if_fail (GTK_IS_CSS_GADGET (gadget));
-
- if (!gtk_css_gadget_get_visible (gadget))
- {
- if (allocation)
- allocation->x = allocation->y = allocation->width = allocation->height = 0;
- if (baseline)
- *baseline = -1;
- return;
- }
-
- style = gtk_css_gadget_get_style (gadget);
- get_box_margin (style, &margin);
- get_box_border (style, &border);
- get_box_padding (style, &padding);
- extents.top = margin.top + border.top + padding.top;
- extents.right = margin.right + border.right + padding.right;
- extents.bottom = margin.bottom + border.bottom + padding.bottom;
- extents.left = margin.left + border.left + padding.left;
-
- if (allocation)
- {
- allocation->x = priv->allocated_size.x + extents.left;
- allocation->y = priv->allocated_size.y + extents.top;
- allocation->width = MAX (0, priv->allocated_size.width - extents.left - extents.right);
- allocation->height = MAX (0, priv->allocated_size.height - extents.top - extents.bottom);
- }
-
- if (baseline)
- {
- if (priv->allocated_baseline >= 0)
- *baseline = priv->allocated_baseline - extents.top;
- else
- *baseline = -1;
- }
-}
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