1314 lines
		
	
	
		
			38 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			1314 lines
		
	
	
		
			38 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/* GTK - The GIMP Toolkit
 | 
						||
 * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
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						||
 *
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						||
 * 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 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.
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						||
 *
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						||
 * 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/>.
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						||
 */
 | 
						||
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						||
#include "config.h"
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						||
 | 
						||
#include "gtkrender.h"
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						||
#include "gtkrenderprivate.h"
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						||
 | 
						||
#include <math.h>
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						||
 | 
						||
#include "gtkcsscornervalueprivate.h"
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						||
#include "gtkcssenumvalueprivate.h"
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						||
#include "gtkcssimagebuiltinprivate.h"
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						||
#include "gtkcssimagevalueprivate.h"
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						||
#include "gtkcssnumbervalueprivate.h"
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						||
#include "gtkcssrgbavalueprivate.h"
 | 
						||
#include "gtkcssshadowsvalueprivate.h"
 | 
						||
#include "gtkcsstransformvalueprivate.h"
 | 
						||
#include "gtkhslaprivate.h"
 | 
						||
#include "gtkrenderbackgroundprivate.h"
 | 
						||
#include "gtkrenderborderprivate.h"
 | 
						||
#include "gtkrendericonprivate.h"
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						||
#include "gtkstylecontextprivate.h"
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						||
 | 
						||
#include "fallback-c89.c"
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						||
 | 
						||
static void
 | 
						||
gtk_do_render_check (GtkStyleContext *context,
 | 
						||
                     cairo_t         *cr,
 | 
						||
                     gdouble          x,
 | 
						||
                     gdouble          y,
 | 
						||
                     gdouble          width,
 | 
						||
                     gdouble          height)
 | 
						||
{
 | 
						||
  GtkStateFlags state;
 | 
						||
  GtkCssImageBuiltinType image_type;
 | 
						||
 | 
						||
  state = gtk_style_context_get_state (context);
 | 
						||
  if (state & GTK_STATE_FLAG_INCONSISTENT)
 | 
						||
    image_type = GTK_CSS_IMAGE_BUILTIN_CHECK_INCONSISTENT;
 | 
						||
  else if (state & GTK_STATE_FLAG_CHECKED)
 | 
						||
    image_type = GTK_CSS_IMAGE_BUILTIN_CHECK_CHECKED;
 | 
						||
  else
 | 
						||
    image_type = GTK_CSS_IMAGE_BUILTIN_CHECK;
 | 
						||
 | 
						||
  gtk_css_style_render_icon (gtk_style_context_lookup_style (context), cr, x, y, width, height, image_type);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_check:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 *
 | 
						||
 * Renders a checkmark (as in a #GtkCheckButton).
 | 
						||
 *
 | 
						||
 * The %GTK_STATE_FLAG_CHECKED state determines whether the check is
 | 
						||
 * on or off, and %GTK_STATE_FLAG_INCONSISTENT determines whether it
 | 
						||
 * should be marked as undefined.
 | 
						||
 *
 | 
						||
 * Typical checkmark rendering:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_check (GtkStyleContext *context,
 | 
						||
                  cairo_t         *cr,
 | 
						||
                  gdouble          x,
 | 
						||
                  gdouble          y,
 | 
						||
                  gdouble          width,
 | 
						||
                  gdouble          height)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_do_render_check (context, cr, x, y, width, height);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
gtk_do_render_option (GtkStyleContext *context,
 | 
						||
                      cairo_t         *cr,
 | 
						||
                      gdouble          x,
 | 
						||
                      gdouble          y,
 | 
						||
                      gdouble          width,
 | 
						||
                      gdouble          height)
 | 
						||
{
 | 
						||
  GtkStateFlags state;
 | 
						||
  GtkCssImageBuiltinType image_type;
 | 
						||
 | 
						||
  state = gtk_style_context_get_state (context);
 | 
						||
  if (state & GTK_STATE_FLAG_INCONSISTENT)
 | 
						||
    image_type = GTK_CSS_IMAGE_BUILTIN_OPTION_INCONSISTENT;
 | 
						||
  else if (state & GTK_STATE_FLAG_CHECKED)
 | 
						||
    image_type = GTK_CSS_IMAGE_BUILTIN_OPTION_CHECKED;
 | 
						||
  else
 | 
						||
    image_type = GTK_CSS_IMAGE_BUILTIN_OPTION;
 | 
						||
 | 
						||
  gtk_css_style_render_icon (gtk_style_context_lookup_style (context), cr, x, y, width, height, image_type);
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}
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						||
 | 
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/**
 | 
						||
 * gtk_render_option:
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						||
 * @context: a #GtkStyleContext
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						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
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						||
 *
 | 
						||
 * Renders an option mark (as in a #GtkRadioButton), the %GTK_STATE_FLAG_CHECKED
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						||
 * state will determine whether the option is on or off, and
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						||
 * %GTK_STATE_FLAG_INCONSISTENT whether it should be marked as undefined.
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 *
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						||
 * Typical option mark rendering:
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						||
 *
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						||
 * 
 | 
						||
 *
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						||
 * Since: 3.0
 | 
						||
 **/
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						||
void
 | 
						||
gtk_render_option (GtkStyleContext *context,
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						||
                   cairo_t         *cr,
 | 
						||
                   gdouble          x,
 | 
						||
                   gdouble          y,
 | 
						||
                   gdouble          width,
 | 
						||
                   gdouble          height)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
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						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_do_render_option (context, cr, x, y, width, height);
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						||
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						||
  cairo_restore (cr);
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						||
}
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						||
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						||
static void
 | 
						||
gtk_do_render_arrow (GtkStyleContext *context,
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						||
                     cairo_t         *cr,
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						||
                     gdouble          angle,
 | 
						||
                     gdouble          x,
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						||
                     gdouble          y,
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						||
                     gdouble          size)
 | 
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{
 | 
						||
  GtkCssImageBuiltinType image_type;
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						||
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						||
  /* map [0, 2 * pi) to [0, 4) */
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						||
  angle = round (2 * angle / G_PI);
 | 
						||
 | 
						||
  switch (((int) angle) & 3)
 | 
						||
  {
 | 
						||
  case 0:
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						||
    image_type = GTK_CSS_IMAGE_BUILTIN_ARROW_UP;
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						||
    break;
 | 
						||
  case 1:
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						||
    image_type = GTK_CSS_IMAGE_BUILTIN_ARROW_RIGHT;
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						||
    break;
 | 
						||
  case 2:
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						||
    image_type = GTK_CSS_IMAGE_BUILTIN_ARROW_DOWN;
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						||
    break;
 | 
						||
  case 3:
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						||
    image_type = GTK_CSS_IMAGE_BUILTIN_ARROW_LEFT;
 | 
						||
    break;
 | 
						||
  default:
 | 
						||
    g_assert_not_reached ();
 | 
						||
    image_type = GTK_CSS_IMAGE_BUILTIN_ARROW_UP;
 | 
						||
    break;
 | 
						||
  }
 | 
						||
 | 
						||
  gtk_css_style_render_icon (gtk_style_context_lookup_style (context), cr, x, y, size, size, image_type);
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}
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						||
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						||
/**
 | 
						||
 * gtk_render_arrow:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @angle: arrow angle from 0 to 2 * %G_PI, being 0 the arrow pointing to the north
 | 
						||
 * @x: X origin of the render area
 | 
						||
 * @y: Y origin of the render area
 | 
						||
 * @size: square side for render area
 | 
						||
 *
 | 
						||
 * Renders an arrow pointing to @angle.
 | 
						||
 *
 | 
						||
 * Typical arrow rendering at 0, 1&solidus;2 π, π and 3&solidus;2 π:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_arrow (GtkStyleContext *context,
 | 
						||
                  cairo_t         *cr,
 | 
						||
                  gdouble          angle,
 | 
						||
                  gdouble          x,
 | 
						||
                  gdouble          y,
 | 
						||
                  gdouble          size)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (size <= 0)
 | 
						||
    return;
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						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_style_context_save (context);
 | 
						||
  gtk_style_context_add_class (context, GTK_STYLE_CLASS_ARROW);
 | 
						||
 | 
						||
  gtk_do_render_arrow (context, cr, angle, x, y, size);
 | 
						||
 | 
						||
  gtk_style_context_restore (context);
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_background:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 *
 | 
						||
 * Renders the background of an element.
 | 
						||
 *
 | 
						||
 * Typical background rendering, showing the effect of
 | 
						||
 * `background-image`, `border-width` and `border-radius`:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0.
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_background (GtkStyleContext *context,
 | 
						||
                       cairo_t         *cr,
 | 
						||
                       gdouble          x,
 | 
						||
                       gdouble          y,
 | 
						||
                       gdouble          width,
 | 
						||
                       gdouble          height)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_css_style_render_background (gtk_style_context_lookup_style (context),
 | 
						||
                                   cr, x, y, width, height,
 | 
						||
                                   gtk_style_context_get_junction_sides (context));
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_frame:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 *
 | 
						||
 * Renders a frame around the rectangle defined by @x, @y, @width, @height.
 | 
						||
 *
 | 
						||
 * Examples of frame rendering, showing the effect of `border-image`,
 | 
						||
 * `border-color`, `border-width`, `border-radius` and junctions:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_frame (GtkStyleContext *context,
 | 
						||
                  cairo_t         *cr,
 | 
						||
                  gdouble          x,
 | 
						||
                  gdouble          y,
 | 
						||
                  gdouble          width,
 | 
						||
                  gdouble          height)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_css_style_render_border (gtk_style_context_lookup_style (context),
 | 
						||
                               cr,
 | 
						||
                               x, y, width, height,
 | 
						||
                               0,
 | 
						||
                               gtk_style_context_get_junction_sides (context));
 | 
						||
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
gtk_do_render_expander (GtkStyleContext *context,
 | 
						||
                        cairo_t         *cr,
 | 
						||
                        gdouble          x,
 | 
						||
                        gdouble          y,
 | 
						||
                        gdouble          width,
 | 
						||
                        gdouble          height)
 | 
						||
{
 | 
						||
  GtkCssImageBuiltinType image_type;
 | 
						||
  GtkStateFlags state;
 | 
						||
 | 
						||
  state = gtk_style_context_get_state (context);
 | 
						||
  if (gtk_style_context_has_class (context, "horizontal"))
 | 
						||
    {
 | 
						||
      if (state & GTK_STATE_FLAG_DIR_RTL)
 | 
						||
        image_type = (state & GTK_STATE_FLAG_CHECKED)
 | 
						||
                     ? GTK_CSS_IMAGE_BUILTIN_EXPANDER_HORIZONTAL_RIGHT_EXPANDED
 | 
						||
                     : GTK_CSS_IMAGE_BUILTIN_EXPANDER_HORIZONTAL_RIGHT;
 | 
						||
      else
 | 
						||
        image_type = (state & GTK_STATE_FLAG_CHECKED)
 | 
						||
                     ? GTK_CSS_IMAGE_BUILTIN_EXPANDER_HORIZONTAL_LEFT_EXPANDED
 | 
						||
                     : GTK_CSS_IMAGE_BUILTIN_EXPANDER_HORIZONTAL_LEFT;
 | 
						||
    }
 | 
						||
  else
 | 
						||
    {
 | 
						||
      if (state & GTK_STATE_FLAG_DIR_RTL)
 | 
						||
        image_type = (state & GTK_STATE_FLAG_CHECKED)
 | 
						||
                     ? GTK_CSS_IMAGE_BUILTIN_EXPANDER_VERTICAL_RIGHT_EXPANDED
 | 
						||
                     : GTK_CSS_IMAGE_BUILTIN_EXPANDER_VERTICAL_RIGHT;
 | 
						||
      else
 | 
						||
        image_type = (state & GTK_STATE_FLAG_CHECKED)
 | 
						||
                     ? GTK_CSS_IMAGE_BUILTIN_EXPANDER_VERTICAL_LEFT_EXPANDED
 | 
						||
                     : GTK_CSS_IMAGE_BUILTIN_EXPANDER_VERTICAL_LEFT;
 | 
						||
    }
 | 
						||
 | 
						||
  gtk_css_style_render_icon (gtk_style_context_lookup_style (context), cr, x, y, width, height, image_type);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_expander:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 *
 | 
						||
 * Renders an expander (as used in #GtkTreeView and #GtkExpander) in the area
 | 
						||
 * defined by @x, @y, @width, @height. The state %GTK_STATE_FLAG_CHECKED
 | 
						||
 * determines whether the expander is collapsed or expanded.
 | 
						||
 *
 | 
						||
 * Typical expander rendering:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_expander (GtkStyleContext *context,
 | 
						||
                     cairo_t         *cr,
 | 
						||
                     gdouble          x,
 | 
						||
                     gdouble          y,
 | 
						||
                     gdouble          width,
 | 
						||
                     gdouble          height)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_do_render_expander (context, cr, x, y, width, height);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_focus:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 *
 | 
						||
 * Renders a focus indicator on the rectangle determined by @x, @y, @width, @height.
 | 
						||
 *
 | 
						||
 * Typical focus rendering:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_focus (GtkStyleContext *context,
 | 
						||
                  cairo_t         *cr,
 | 
						||
                  gdouble          x,
 | 
						||
                  gdouble          y,
 | 
						||
                  gdouble          width,
 | 
						||
                  gdouble          height)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_css_style_render_outline (gtk_style_context_lookup_style (context),
 | 
						||
                                cr,
 | 
						||
                                x, y, width, height);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
prepare_context_for_layout (cairo_t *cr,
 | 
						||
                            gdouble x,
 | 
						||
                            gdouble y,
 | 
						||
                            PangoLayout *layout)
 | 
						||
{
 | 
						||
  const PangoMatrix *matrix;
 | 
						||
 | 
						||
  matrix = pango_context_get_matrix (pango_layout_get_context (layout));
 | 
						||
 | 
						||
  cairo_move_to (cr, x, y);
 | 
						||
 | 
						||
  if (matrix)
 | 
						||
    {
 | 
						||
      cairo_matrix_t cairo_matrix;
 | 
						||
 | 
						||
      cairo_matrix_init (&cairo_matrix,
 | 
						||
                         matrix->xx, matrix->yx,
 | 
						||
                         matrix->xy, matrix->yy,
 | 
						||
                         matrix->x0, matrix->y0);
 | 
						||
 | 
						||
      cairo_transform (cr, &cairo_matrix);
 | 
						||
    }
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
gtk_do_render_layout (GtkStyleContext *context,
 | 
						||
                      cairo_t         *cr,
 | 
						||
                      gdouble          x,
 | 
						||
                      gdouble          y,
 | 
						||
                      PangoLayout     *layout)
 | 
						||
{
 | 
						||
  const GdkRGBA *fg_color;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
 | 
						||
 | 
						||
  prepare_context_for_layout (cr, x, y, layout);
 | 
						||
 | 
						||
  _gtk_css_shadows_value_paint_layout (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_SHADOW),
 | 
						||
                                       cr, layout);
 | 
						||
 | 
						||
  gdk_cairo_set_source_rgba (cr, fg_color);
 | 
						||
  pango_cairo_show_layout (cr, layout);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_layout:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin
 | 
						||
 * @y: Y origin
 | 
						||
 * @layout: the #PangoLayout to render
 | 
						||
 *
 | 
						||
 * Renders @layout on the coordinates @x, @y
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_layout (GtkStyleContext *context,
 | 
						||
                   cairo_t         *cr,
 | 
						||
                   gdouble          x,
 | 
						||
                   gdouble          y,
 | 
						||
                   PangoLayout     *layout)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (PANGO_IS_LAYOUT (layout));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_do_render_layout (context, cr, x, y, layout);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
gtk_do_render_line (GtkStyleContext *context,
 | 
						||
                    cairo_t         *cr,
 | 
						||
                    gdouble          x0,
 | 
						||
                    gdouble          y0,
 | 
						||
                    gdouble          x1,
 | 
						||
                    gdouble          y1)
 | 
						||
{
 | 
						||
  const GdkRGBA *color;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
 | 
						||
  color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
 | 
						||
 | 
						||
  cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
 | 
						||
  cairo_set_line_width (cr, 1);
 | 
						||
 | 
						||
  cairo_move_to (cr, x0 + 0.5, y0 + 0.5);
 | 
						||
  cairo_line_to (cr, x1 + 0.5, y1 + 0.5);
 | 
						||
 | 
						||
  gdk_cairo_set_source_rgba (cr, color);
 | 
						||
  cairo_stroke (cr);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_line:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x0: X coordinate for the origin of the line
 | 
						||
 * @y0: Y coordinate for the origin of the line
 | 
						||
 * @x1: X coordinate for the end of the line
 | 
						||
 * @y1: Y coordinate for the end of the line
 | 
						||
 *
 | 
						||
 * Renders a line from (x0, y0) to (x1, y1).
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_line (GtkStyleContext *context,
 | 
						||
                 cairo_t         *cr,
 | 
						||
                 gdouble          x0,
 | 
						||
                 gdouble          y0,
 | 
						||
                 gdouble          x1,
 | 
						||
                 gdouble          y1)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_do_render_line (context, cr, x0, y0, x1, y1);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
gtk_do_render_slider (GtkStyleContext *context,
 | 
						||
                      cairo_t         *cr,
 | 
						||
                      gdouble          x,
 | 
						||
                      gdouble          y,
 | 
						||
                      gdouble          width,
 | 
						||
                      gdouble          height,
 | 
						||
                      GtkOrientation   orientation)
 | 
						||
{
 | 
						||
  GtkCssStyle *style;
 | 
						||
  GtkJunctionSides junction;
 | 
						||
 | 
						||
  style = gtk_style_context_lookup_style (context);
 | 
						||
  junction = gtk_style_context_get_junction_sides (context);
 | 
						||
 | 
						||
  gtk_css_style_render_background (style,
 | 
						||
                                   cr,
 | 
						||
                                   x, y, width, height,
 | 
						||
                                   junction);
 | 
						||
  gtk_css_style_render_border (style,
 | 
						||
                               cr,
 | 
						||
                               x, y, width, height,
 | 
						||
                               0,
 | 
						||
                               junction);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_slider:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 * @orientation: orientation of the slider
 | 
						||
 *
 | 
						||
 * Renders a slider (as in #GtkScale) in the rectangle defined by @x, @y,
 | 
						||
 * @width, @height. @orientation defines whether the slider is vertical
 | 
						||
 * or horizontal.
 | 
						||
 *
 | 
						||
 * Typical slider rendering:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_slider (GtkStyleContext *context,
 | 
						||
                   cairo_t         *cr,
 | 
						||
                   gdouble          x,
 | 
						||
                   gdouble          y,
 | 
						||
                   gdouble          width,
 | 
						||
                   gdouble          height,
 | 
						||
                   GtkOrientation   orientation)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_do_render_slider (context, cr, x, y, width, height, orientation);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
gtk_css_style_render_frame_gap (GtkCssStyle     *style,
 | 
						||
                                cairo_t         *cr,
 | 
						||
                                gdouble          x,
 | 
						||
                                gdouble          y,
 | 
						||
                                gdouble          width,
 | 
						||
                                gdouble          height,
 | 
						||
                                GtkPositionType  gap_side,
 | 
						||
                                gdouble          xy0_gap,
 | 
						||
                                gdouble          xy1_gap,
 | 
						||
                                GtkJunctionSides junction)
 | 
						||
{
 | 
						||
  gint border_width;
 | 
						||
  GtkCssValue *corner[4];
 | 
						||
  gdouble x0, y0, x1, y1, xc = 0.0, yc = 0.0, wc = 0.0, hc = 0.0;
 | 
						||
  GtkBorder border;
 | 
						||
 | 
						||
  border.top = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100);
 | 
						||
  border.right = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100);
 | 
						||
  border.bottom = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100);
 | 
						||
  border.left = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100);
 | 
						||
  corner[GTK_CSS_TOP_LEFT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS);
 | 
						||
  corner[GTK_CSS_TOP_RIGHT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS);
 | 
						||
  corner[GTK_CSS_BOTTOM_LEFT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS);
 | 
						||
  corner[GTK_CSS_BOTTOM_RIGHT] = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS);
 | 
						||
 | 
						||
  border_width = MIN (MIN (border.top, border.bottom),
 | 
						||
                      MIN (border.left, border.right));
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
 | 
						||
  switch (gap_side)
 | 
						||
    {
 | 
						||
    case GTK_POS_TOP:
 | 
						||
      xc = x + xy0_gap + border_width;
 | 
						||
      yc = y;
 | 
						||
      wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
 | 
						||
      hc = border_width;
 | 
						||
 | 
						||
      if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_LEFT], width))
 | 
						||
        junction |= GTK_JUNCTION_CORNER_TOPLEFT;
 | 
						||
 | 
						||
      if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_RIGHT], width))
 | 
						||
        junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
 | 
						||
      break;
 | 
						||
    case GTK_POS_BOTTOM:
 | 
						||
      xc = x + xy0_gap + border_width;
 | 
						||
      yc = y + height - border_width;
 | 
						||
      wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
 | 
						||
      hc = border_width;
 | 
						||
 | 
						||
      if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_LEFT], width))
 | 
						||
        junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
 | 
						||
 | 
						||
      if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_RIGHT], width))
 | 
						||
        junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
 | 
						||
 | 
						||
      break;
 | 
						||
    case GTK_POS_LEFT:
 | 
						||
      xc = x;
 | 
						||
      yc = y + xy0_gap + border_width;
 | 
						||
      wc = border_width;
 | 
						||
      hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
 | 
						||
 | 
						||
      if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_LEFT], height))
 | 
						||
        junction |= GTK_JUNCTION_CORNER_TOPLEFT;
 | 
						||
 | 
						||
      if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_LEFT], height))
 | 
						||
        junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
 | 
						||
 | 
						||
      break;
 | 
						||
    case GTK_POS_RIGHT:
 | 
						||
      xc = x + width - border_width;
 | 
						||
      yc = y + xy0_gap + border_width;
 | 
						||
      wc = border_width;
 | 
						||
      hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
 | 
						||
 | 
						||
      if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_RIGHT], height))
 | 
						||
        junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
 | 
						||
 | 
						||
      if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_RIGHT], height))
 | 
						||
        junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
 | 
						||
 | 
						||
      break;
 | 
						||
    }
 | 
						||
 | 
						||
  cairo_clip_extents (cr, &x0, &y0, &x1, &y1);
 | 
						||
  cairo_rectangle (cr, x0, y0, x1 - x0, yc - y0);
 | 
						||
  cairo_rectangle (cr, x0, yc, xc - x0, hc);
 | 
						||
  cairo_rectangle (cr, xc + wc, yc, x1 - (xc + wc), hc);
 | 
						||
  cairo_rectangle (cr, x0, yc + hc, x1 - x0, y1 - (yc + hc));
 | 
						||
  cairo_clip (cr);
 | 
						||
 | 
						||
  gtk_css_style_render_border (style, cr,
 | 
						||
                               x, y, width, height,
 | 
						||
                               0, junction);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_frame_gap:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 * @gap_side: side where the gap is
 | 
						||
 * @xy0_gap: initial coordinate (X or Y depending on @gap_side) for the gap
 | 
						||
 * @xy1_gap: end coordinate (X or Y depending on @gap_side) for the gap
 | 
						||
 *
 | 
						||
 * Renders a frame around the rectangle defined by (@x, @y, @width, @height),
 | 
						||
 * leaving a gap on one side. @xy0_gap and @xy1_gap will mean X coordinates
 | 
						||
 * for %GTK_POS_TOP and %GTK_POS_BOTTOM gap sides, and Y coordinates for
 | 
						||
 * %GTK_POS_LEFT and %GTK_POS_RIGHT.
 | 
						||
 *
 | 
						||
 * Typical rendering of a frame with a gap:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_frame_gap (GtkStyleContext *context,
 | 
						||
                      cairo_t         *cr,
 | 
						||
                      gdouble          x,
 | 
						||
                      gdouble          y,
 | 
						||
                      gdouble          width,
 | 
						||
                      gdouble          height,
 | 
						||
                      GtkPositionType  gap_side,
 | 
						||
                      gdouble          xy0_gap,
 | 
						||
                      gdouble          xy1_gap)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
  g_return_if_fail (xy0_gap <= xy1_gap);
 | 
						||
  g_return_if_fail (xy0_gap >= 0);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  if (gap_side == GTK_POS_LEFT ||
 | 
						||
      gap_side == GTK_POS_RIGHT)
 | 
						||
    g_return_if_fail (xy1_gap <= height);
 | 
						||
  else
 | 
						||
    g_return_if_fail (xy1_gap <= width);
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_css_style_render_frame_gap (gtk_style_context_lookup_style (context),
 | 
						||
                                  cr,
 | 
						||
                                  x, y, width, height, gap_side,
 | 
						||
                                  xy0_gap, xy1_gap,
 | 
						||
                                  gtk_style_context_get_junction_sides (context));
 | 
						||
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
gtk_css_style_render_extension (GtkCssStyle     *style,
 | 
						||
                                cairo_t         *cr,
 | 
						||
                                gdouble          x,
 | 
						||
                                gdouble          y,
 | 
						||
                                gdouble          width,
 | 
						||
                                gdouble          height,
 | 
						||
                                GtkPositionType  gap_side)
 | 
						||
{
 | 
						||
  GtkJunctionSides junction = 0;
 | 
						||
  guint hidden_side = 0;
 | 
						||
 | 
						||
  switch (gap_side)
 | 
						||
    {
 | 
						||
    case GTK_POS_LEFT:
 | 
						||
      junction = GTK_JUNCTION_LEFT;
 | 
						||
      hidden_side = (1 << GTK_CSS_LEFT);
 | 
						||
      break;
 | 
						||
    case GTK_POS_RIGHT:
 | 
						||
      junction = GTK_JUNCTION_RIGHT;
 | 
						||
      hidden_side = (1 << GTK_CSS_RIGHT);
 | 
						||
      break;
 | 
						||
    case GTK_POS_TOP:
 | 
						||
      junction = GTK_JUNCTION_TOP;
 | 
						||
      hidden_side = (1 << GTK_CSS_TOP);
 | 
						||
      break;
 | 
						||
    case GTK_POS_BOTTOM:
 | 
						||
      junction = GTK_JUNCTION_BOTTOM;
 | 
						||
      hidden_side = (1 << GTK_CSS_BOTTOM);
 | 
						||
      break;
 | 
						||
    }
 | 
						||
 | 
						||
  gtk_css_style_render_background (style,
 | 
						||
                                   cr,
 | 
						||
                                   x, y,
 | 
						||
                                   width, height,
 | 
						||
                                   junction);
 | 
						||
 | 
						||
  gtk_css_style_render_border (style, cr,
 | 
						||
                               x, y, width, height,
 | 
						||
                               hidden_side, junction);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_extension:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 * @gap_side: side where the gap is
 | 
						||
 *
 | 
						||
 * Renders a extension (as in a #GtkNotebook tab) in the rectangle
 | 
						||
 * defined by @x, @y, @width, @height. The side where the extension
 | 
						||
 * connects to is defined by @gap_side.
 | 
						||
 *
 | 
						||
 * Typical extension rendering:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_extension (GtkStyleContext *context,
 | 
						||
                      cairo_t         *cr,
 | 
						||
                      gdouble          x,
 | 
						||
                      gdouble          y,
 | 
						||
                      gdouble          width,
 | 
						||
                      gdouble          height,
 | 
						||
                      GtkPositionType  gap_side)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_css_style_render_extension (gtk_style_context_lookup_style (context),
 | 
						||
                                  cr,
 | 
						||
                                  x, y, width, height,
 | 
						||
                                  gap_side);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
gtk_do_render_handle (GtkStyleContext *context,
 | 
						||
                      cairo_t         *cr,
 | 
						||
                      gdouble          x,
 | 
						||
                      gdouble          y,
 | 
						||
                      gdouble          width,
 | 
						||
                      gdouble          height)
 | 
						||
{
 | 
						||
  GtkCssImageBuiltinType type;
 | 
						||
 | 
						||
  gtk_render_background (context, cr, x, y, width, height);
 | 
						||
  gtk_render_frame (context, cr, x, y, width, height);
 | 
						||
 | 
						||
  if (gtk_style_context_has_class (context, GTK_STYLE_CLASS_GRIP))
 | 
						||
    {
 | 
						||
      GtkJunctionSides sides = gtk_style_context_get_junction_sides (context);
 | 
						||
 | 
						||
      /* order is important here for when too many (or too few) sides are set */
 | 
						||
      if ((sides & GTK_JUNCTION_CORNER_BOTTOMRIGHT) == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_BOTTOMRIGHT;
 | 
						||
      else if ((sides & GTK_JUNCTION_CORNER_TOPRIGHT) == GTK_JUNCTION_CORNER_TOPRIGHT)
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_TOPRIGHT;
 | 
						||
      else if ((sides & GTK_JUNCTION_CORNER_BOTTOMLEFT) == GTK_JUNCTION_CORNER_BOTTOMLEFT)
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_BOTTOMLEFT;
 | 
						||
      else if ((sides & GTK_JUNCTION_CORNER_TOPLEFT) == GTK_JUNCTION_CORNER_TOPLEFT)
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_TOPLEFT;
 | 
						||
      else if (sides & GTK_JUNCTION_RIGHT)
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_RIGHT;
 | 
						||
      else if (sides & GTK_JUNCTION_BOTTOM)
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_BOTTOM;
 | 
						||
      else if (sides & GTK_JUNCTION_TOP)
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_TOP;
 | 
						||
      else if (sides & GTK_JUNCTION_LEFT)
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_LEFT;
 | 
						||
      else
 | 
						||
        type = GTK_CSS_IMAGE_BUILTIN_GRIP_BOTTOMRIGHT;
 | 
						||
    }
 | 
						||
  else if (gtk_style_context_has_class (context, GTK_STYLE_CLASS_PANE_SEPARATOR))
 | 
						||
    {
 | 
						||
      type = GTK_CSS_IMAGE_BUILTIN_PANE_SEPARATOR;
 | 
						||
    }
 | 
						||
  else
 | 
						||
    {
 | 
						||
      type = GTK_CSS_IMAGE_BUILTIN_HANDLE;
 | 
						||
    }
 | 
						||
 | 
						||
  gtk_css_style_render_icon (gtk_style_context_lookup_style (context), cr, x, y, width, height, type);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_handle:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 *
 | 
						||
 * Renders a handle (as in #GtkHandleBox, #GtkPaned and
 | 
						||
 * #GtkWindow’s resize grip), in the rectangle
 | 
						||
 * determined by @x, @y, @width, @height.
 | 
						||
 *
 | 
						||
 * Handles rendered for the paned and grip classes:
 | 
						||
 *
 | 
						||
 * 
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_handle (GtkStyleContext *context,
 | 
						||
                   cairo_t         *cr,
 | 
						||
                   gdouble          x,
 | 
						||
                   gdouble          y,
 | 
						||
                   gdouble          width,
 | 
						||
                   gdouble          height)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_do_render_handle (context, cr, x, y, width, height);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_activity:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @x: X origin of the rectangle
 | 
						||
 * @y: Y origin of the rectangle
 | 
						||
 * @width: rectangle width
 | 
						||
 * @height: rectangle height
 | 
						||
 *
 | 
						||
 * Renders an activity indicator (such as in #GtkSpinner).
 | 
						||
 * The state %GTK_STATE_FLAG_CHECKED determines whether there is
 | 
						||
 * activity going on.
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_activity (GtkStyleContext *context,
 | 
						||
                     cairo_t         *cr,
 | 
						||
                     gdouble          x,
 | 
						||
                     gdouble          y,
 | 
						||
                     gdouble          width,
 | 
						||
                     gdouble          height)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  if (width <= 0 || height <= 0)
 | 
						||
    return;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_css_style_render_icon (gtk_style_context_lookup_style (context), cr, x, y, width, height, GTK_CSS_IMAGE_BUILTIN_SPINNER);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static void
 | 
						||
colorshift_source (cairo_t *cr,
 | 
						||
		   gdouble shift)
 | 
						||
{
 | 
						||
  cairo_pattern_t *source;
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_paint (cr);
 | 
						||
 | 
						||
  source = cairo_pattern_reference (cairo_get_source (cr));
 | 
						||
 | 
						||
  cairo_set_source_rgb (cr, shift, shift, shift);
 | 
						||
  cairo_set_operator (cr, CAIRO_OPERATOR_COLOR_DODGE);
 | 
						||
 | 
						||
  cairo_mask (cr, source);
 | 
						||
 | 
						||
  cairo_pattern_destroy (source);
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
static GdkPixbuf *
 | 
						||
scale_or_ref (GdkPixbuf *src,
 | 
						||
              gint       width,
 | 
						||
              gint       height)
 | 
						||
{
 | 
						||
  if (width == gdk_pixbuf_get_width (src) &&
 | 
						||
      height == gdk_pixbuf_get_height (src))
 | 
						||
    return g_object_ref (src);
 | 
						||
  else
 | 
						||
    return gdk_pixbuf_scale_simple (src,
 | 
						||
                                    width, height,
 | 
						||
                                    GDK_INTERP_BILINEAR);
 | 
						||
}
 | 
						||
 | 
						||
static GdkPixbuf *
 | 
						||
gtk_do_render_icon_pixbuf (GtkStyleContext     *context,
 | 
						||
                           const GtkIconSource *source,
 | 
						||
                           GtkIconSize          size)
 | 
						||
{
 | 
						||
  GdkPixbuf *scaled;
 | 
						||
  GdkPixbuf *stated;
 | 
						||
  GdkPixbuf *base_pixbuf;
 | 
						||
  gint width = 1;
 | 
						||
  gint height = 1;
 | 
						||
  cairo_t *cr;
 | 
						||
  cairo_surface_t *surface;
 | 
						||
  gboolean wildcarded;
 | 
						||
  GtkCssImageEffect image_effect;
 | 
						||
 | 
						||
  G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
 | 
						||
  base_pixbuf = gtk_icon_source_get_pixbuf (source);
 | 
						||
  G_GNUC_END_IGNORE_DEPRECATIONS;
 | 
						||
 | 
						||
  g_return_val_if_fail (base_pixbuf != NULL, NULL);
 | 
						||
 | 
						||
  if (size != (GtkIconSize) -1 &&
 | 
						||
      !gtk_icon_size_lookup (size, &width, &height))
 | 
						||
    {
 | 
						||
      g_warning (G_STRLOC ": invalid icon size '%d'", size);
 | 
						||
      return NULL;
 | 
						||
    }
 | 
						||
 | 
						||
  /* If the size was wildcarded, and we're allowed to scale, then scale; otherwise,
 | 
						||
   * leave it alone.
 | 
						||
   */
 | 
						||
  G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
 | 
						||
  wildcarded = gtk_icon_source_get_size_wildcarded (source);
 | 
						||
  G_GNUC_END_IGNORE_DEPRECATIONS;
 | 
						||
  if (size != (GtkIconSize) -1 && wildcarded)
 | 
						||
    scaled = scale_or_ref (base_pixbuf, width, height);
 | 
						||
  else
 | 
						||
    scaled = g_object_ref (base_pixbuf);
 | 
						||
 | 
						||
  /* If the state was wildcarded, then generate a state. */
 | 
						||
  G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
 | 
						||
  wildcarded = gtk_icon_source_get_state_wildcarded (source);
 | 
						||
  G_GNUC_END_IGNORE_DEPRECATIONS;
 | 
						||
 | 
						||
  if (!wildcarded)
 | 
						||
    return scaled;
 | 
						||
 | 
						||
  image_effect = _gtk_css_image_effect_value_get
 | 
						||
    (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_GTK_IMAGE_EFFECT));
 | 
						||
 | 
						||
  switch (image_effect)
 | 
						||
    {
 | 
						||
    case GTK_CSS_IMAGE_EFFECT_DIM:
 | 
						||
      surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
 | 
						||
					    gdk_pixbuf_get_width (scaled),
 | 
						||
					    gdk_pixbuf_get_height (scaled));
 | 
						||
      cr = cairo_create (surface);
 | 
						||
      gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
 | 
						||
      cairo_paint_with_alpha (cr, 0.5);
 | 
						||
 | 
						||
      cairo_destroy (cr);
 | 
						||
 | 
						||
      g_object_unref (scaled);
 | 
						||
      stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
 | 
						||
					    cairo_image_surface_get_width (surface),
 | 
						||
					    cairo_image_surface_get_height (surface));
 | 
						||
      cairo_surface_destroy (surface);
 | 
						||
      break;
 | 
						||
 | 
						||
    case GTK_CSS_IMAGE_EFFECT_HIGHLIGHT:
 | 
						||
      surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
 | 
						||
					    gdk_pixbuf_get_width (scaled),
 | 
						||
					    gdk_pixbuf_get_height (scaled));
 | 
						||
 | 
						||
      cr = cairo_create (surface);
 | 
						||
      gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
 | 
						||
      colorshift_source (cr, 0.10);
 | 
						||
 | 
						||
      cairo_destroy (cr);
 | 
						||
 | 
						||
      g_object_unref (scaled);
 | 
						||
      stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
 | 
						||
					    cairo_image_surface_get_width (surface),
 | 
						||
					    cairo_image_surface_get_height (surface));
 | 
						||
      cairo_surface_destroy (surface);
 | 
						||
      break;
 | 
						||
 | 
						||
    default:
 | 
						||
      g_warn_if_reached ();
 | 
						||
      /* fall through */
 | 
						||
    case GTK_CSS_IMAGE_EFFECT_NONE:
 | 
						||
      stated = scaled;
 | 
						||
      break;
 | 
						||
    }
 | 
						||
 | 
						||
  return stated;
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_icon_pixbuf:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @source: the #GtkIconSource specifying the icon to render
 | 
						||
 * @size: (type int): the size to render the icon at. A size of (GtkIconSize) -1
 | 
						||
 *        means render at the size of the source and don’t scale.
 | 
						||
 *
 | 
						||
 * Renders the icon specified by @source at the given @size, returning the result
 | 
						||
 * in a pixbuf.
 | 
						||
 *
 | 
						||
 * Returns: (transfer full): a newly-created #GdkPixbuf containing the rendered icon
 | 
						||
 *
 | 
						||
 * Since: 3.0
 | 
						||
 *
 | 
						||
 * Deprecated: 3.10: Use gtk_icon_theme_load_icon() instead.
 | 
						||
 **/
 | 
						||
GdkPixbuf *
 | 
						||
gtk_render_icon_pixbuf (GtkStyleContext     *context,
 | 
						||
                        const GtkIconSource *source,
 | 
						||
                        GtkIconSize          size)
 | 
						||
{
 | 
						||
  g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
 | 
						||
  g_return_val_if_fail (size > GTK_ICON_SIZE_INVALID || size == (GtkIconSize)-1, NULL);
 | 
						||
  g_return_val_if_fail (source != NULL, NULL);
 | 
						||
 | 
						||
  return gtk_do_render_icon_pixbuf (context, source, size);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_icon:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @pixbuf: a #GdkPixbuf containing the icon to draw
 | 
						||
 * @x: X position for the @pixbuf
 | 
						||
 * @y: Y position for the @pixbuf
 | 
						||
 *
 | 
						||
 * Renders the icon in @pixbuf at the specified @x and @y coordinates.
 | 
						||
 *
 | 
						||
 * Since: 3.2
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_icon (GtkStyleContext *context,
 | 
						||
                 cairo_t         *cr,
 | 
						||
                 GdkPixbuf       *pixbuf,
 | 
						||
                 gdouble          x,
 | 
						||
                 gdouble          y)
 | 
						||
{
 | 
						||
  cairo_surface_t *surface;
 | 
						||
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  surface = gdk_cairo_surface_create_from_pixbuf (pixbuf, 1, NULL);
 | 
						||
 | 
						||
  gtk_css_style_render_icon_surface (gtk_style_context_lookup_style (context),
 | 
						||
                                     cr,
 | 
						||
                                     surface,
 | 
						||
                                     x, y);
 | 
						||
 | 
						||
  cairo_surface_destroy (surface);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/**
 | 
						||
 * gtk_render_icon_surface:
 | 
						||
 * @context: a #GtkStyleContext
 | 
						||
 * @cr: a #cairo_t
 | 
						||
 * @surface: a #cairo_surface_t containing the icon to draw
 | 
						||
 * @x: X position for the @icon
 | 
						||
 * @y: Y position for the @incon
 | 
						||
 *
 | 
						||
 * Renders the icon in @surface at the specified @x and @y coordinates.
 | 
						||
 *
 | 
						||
 * Since: 3.10
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_icon_surface (GtkStyleContext *context,
 | 
						||
			 cairo_t         *cr,
 | 
						||
			 cairo_surface_t *surface,
 | 
						||
			 gdouble          x,
 | 
						||
			 gdouble          y)
 | 
						||
{
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  cairo_save (cr);
 | 
						||
  cairo_new_path (cr);
 | 
						||
 | 
						||
  gtk_css_style_render_icon_surface (gtk_style_context_lookup_style (context),
 | 
						||
                                     cr,
 | 
						||
                                     surface,
 | 
						||
                                     x, y);
 | 
						||
 | 
						||
  cairo_restore (cr);
 | 
						||
}
 | 
						||
 | 
						||
/*
 | 
						||
 * gtk_render_content_path:
 | 
						||
 * @context: style context to get style information from
 | 
						||
 * @cr: cairo context to add path to
 | 
						||
 * @x: x coordinate of CSS box
 | 
						||
 * @y: y coordinate of CSS box
 | 
						||
 * @width: width of CSS box
 | 
						||
 * @height: height of CSS box
 | 
						||
 *
 | 
						||
 * Adds the path of the content box to @cr for a given border box.
 | 
						||
 * This function respects rounded corners.
 | 
						||
 *
 | 
						||
 * This is useful if you are drawing content that is supposed to
 | 
						||
 * fill the whole content area, like the color buttons in
 | 
						||
 * #GtkColorChooserDialog.
 | 
						||
 **/
 | 
						||
void
 | 
						||
gtk_render_content_path (GtkStyleContext *context,
 | 
						||
                         cairo_t         *cr,
 | 
						||
                         double           x,
 | 
						||
                         double           y,
 | 
						||
                         double           width,
 | 
						||
                         double           height)
 | 
						||
{
 | 
						||
  GtkRoundedBox box;
 | 
						||
 | 
						||
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
 | 
						||
  g_return_if_fail (cr != NULL);
 | 
						||
 | 
						||
  _gtk_rounded_box_init_rect (&box, x, y, width, height);
 | 
						||
  _gtk_rounded_box_apply_border_radius_for_style (&box, gtk_style_context_lookup_style (context), 0);
 | 
						||
 | 
						||
  _gtk_rounded_box_shrink (&box,
 | 
						||
                           _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100)
 | 
						||
                           + _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_TOP), 100),
 | 
						||
                           _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100)
 | 
						||
                           + _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_RIGHT), 100),
 | 
						||
                           _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100)
 | 
						||
                           + _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_BOTTOM), 100),
 | 
						||
                           _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100)
 | 
						||
                           + _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_LEFT), 100));
 | 
						||
 | 
						||
  _gtk_rounded_box_path (&box, cr);
 | 
						||
}
 |