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gtk2/gtk/gtkstyle.c
Carlos Garnacho 8ea649e0a0 Rely only on fg/bg colors. 
"foreground-color" has been renamed to just "color" as in regular CSS,
and the "text-color" and "base-color" properties have been removed. The
default CSS has been changed to have widgets cope with this change.
2010-12-04 15:38:29 +01:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <gobject/gvaluecollector.h>
#include "gtkmarshalers.h"
#include "gtkpango.h"
#include "gtkrc.h"
#include "gtkspinbutton.h"
#include "gtkstyle.h"
#include "gtkwidget.h"
#include "gtkthemes.h"
#include "gtkiconfactory.h"
#include "gtksettings.h" /* _gtk_settings_parse_convert() */
#include "gtkintl.h"
#include "gtkdebug.h"
#include "gtkspinner.h"
/**
* SECTION:gtkstyle
* @Short_description: An object that hold style information for widgets
* @Title: GtkStyle
*
* A #GtkStyle object encapsulates the information that provides the look and
* feel for a widget. Each #GtkWidget has an associated #GTkStyle object that
* is used when rendering that widget. Also, a #GtkStyle holds information for
* the five possible widget states though not every widget supports all five
* states; see #GtkStateType.
*
* Usually the #GtkStyle for a widget is the same as the default style that is
* set by GTK+ and modified the theme engine.
*
* Usually applications should not need to use or modify the #GtkStyle of their
* widgets.
*/
#define LIGHTNESS_MULT 1.3
#define DARKNESS_MULT 0.7
/* --- typedefs & structures --- */
typedef struct {
GType widget_type;
GParamSpec *pspec;
GValue value;
} PropertyValue;
#define GTK_STYLE_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_STYLE, GtkStylePrivate))
typedef struct _GtkStylePrivate GtkStylePrivate;
struct _GtkStylePrivate {
GSList *color_hashes;
GtkStyleContext *context;
};
enum {
PROP_0,
PROP_CONTEXT
};
/* --- prototypes --- */
static void gtk_style_finalize (GObject *object);
static void gtk_style_constructed (GObject *object);
static void gtk_style_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_style_realize (GtkStyle *style,
GdkVisual *visual);
static void gtk_style_real_realize (GtkStyle *style);
static void gtk_style_real_unrealize (GtkStyle *style);
static void gtk_style_real_copy (GtkStyle *style,
GtkStyle *src);
static void gtk_style_real_set_background (GtkStyle *style,
GdkWindow *window,
GtkStateType state_type);
static GtkStyle *gtk_style_real_clone (GtkStyle *style);
static void gtk_style_real_init_from_rc (GtkStyle *style,
GtkRcStyle *rc_style);
static GdkPixbuf *gtk_default_render_icon (GtkStyle *style,
const GtkIconSource *source,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GtkWidget *widget,
const gchar *detail);
static void gtk_default_draw_hline (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x1,
gint x2,
gint y);
static void gtk_default_draw_vline (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint y1,
gint y2,
gint x);
static void gtk_default_draw_shadow (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_arrow (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
GtkArrowType arrow_type,
gboolean fill,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_diamond (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_box (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_flat_box (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_check (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_option (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_tab (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_shadow_gap (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side,
gint gap_x,
gint gap_width);
static void gtk_default_draw_box_gap (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side,
gint gap_x,
gint gap_width);
static void gtk_default_draw_extension (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side);
static void gtk_default_draw_focus (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_slider (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkOrientation orientation);
static void gtk_default_draw_handle (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkOrientation orientation);
static void gtk_default_draw_expander (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
GtkExpanderStyle expander_style);
static void gtk_default_draw_layout (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
gboolean use_text,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
PangoLayout *layout);
static void gtk_default_draw_resize_grip (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
GdkWindowEdge edge,
gint x,
gint y,
gint width,
gint height);
static void gtk_default_draw_spinner (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
guint step,
gint x,
gint y,
gint width,
gint height);
static void rgb_to_hls (gdouble *r,
gdouble *g,
gdouble *b);
static void hls_to_rgb (gdouble *h,
gdouble *l,
gdouble *s);
static void style_unrealize_cursors (GtkStyle *style);
/*
* Data for default check and radio buttons
*/
static const GtkRequisition default_option_indicator_size = { 7, 13 };
static const GtkBorder default_option_indicator_spacing = { 7, 5, 2, 2 };
#define GTK_GRAY 0xdcdc, 0xdada, 0xd5d5
#define GTK_DARK_GRAY 0xc4c4, 0xc2c2, 0xbdbd
#define GTK_LIGHT_GRAY 0xeeee, 0xebeb, 0xe7e7
#define GTK_WHITE 0xffff, 0xffff, 0xffff
#define GTK_BLUE 0x4b4b, 0x6969, 0x8383
#define GTK_VERY_DARK_GRAY 0x9c9c, 0x9a9a, 0x9494
#define GTK_BLACK 0x0000, 0x0000, 0x0000
#define GTK_WEAK_GRAY 0x7530, 0x7530, 0x7530
/* --- variables --- */
static const GdkColor gtk_default_normal_fg = { 0, GTK_BLACK };
static const GdkColor gtk_default_active_fg = { 0, GTK_BLACK };
static const GdkColor gtk_default_prelight_fg = { 0, GTK_BLACK };
static const GdkColor gtk_default_selected_fg = { 0, GTK_WHITE };
static const GdkColor gtk_default_insensitive_fg = { 0, GTK_WEAK_GRAY };
static const GdkColor gtk_default_normal_bg = { 0, GTK_GRAY };
static const GdkColor gtk_default_active_bg = { 0, GTK_DARK_GRAY };
static const GdkColor gtk_default_prelight_bg = { 0, GTK_LIGHT_GRAY };
static const GdkColor gtk_default_selected_bg = { 0, GTK_BLUE };
static const GdkColor gtk_default_insensitive_bg = { 0, GTK_GRAY };
static const GdkColor gtk_default_selected_base = { 0, GTK_BLUE };
static const GdkColor gtk_default_active_base = { 0, GTK_VERY_DARK_GRAY };
/* --- signals --- */
static guint realize_signal = 0;
static guint unrealize_signal = 0;
G_DEFINE_TYPE (GtkStyle, gtk_style, G_TYPE_OBJECT)
/* --- functions --- */
/**
* _gtk_style_init_for_settings:
* @style: a #GtkStyle
* @settings: a #GtkSettings
*
* Initializes the font description in @style according to the default
* font name of @settings. This is called for gtk_style_new() with
* the settings for the default screen (if any); if we are creating
* a style for a particular screen, we then call it again in a
* location where we know the correct settings.
* The reason for this is that gtk_rc_style_create_style() doesn't
* take the screen for an argument.
**/
void
_gtk_style_init_for_settings (GtkStyle *style,
GtkSettings *settings)
{
const gchar *font_name = _gtk_rc_context_get_default_font_name (settings);
if (style->font_desc)
pango_font_description_free (style->font_desc);
style->font_desc = pango_font_description_from_string (font_name);
if (!pango_font_description_get_family (style->font_desc))
{
g_warning ("Default font does not have a family set");
pango_font_description_set_family (style->font_desc, "Sans");
}
if (pango_font_description_get_size (style->font_desc) <= 0)
{
g_warning ("Default font does not have a positive size");
pango_font_description_set_size (style->font_desc, 10 * PANGO_SCALE);
}
}
static void
gtk_style_init (GtkStyle *style)
{
gint i;
GtkSettings *settings = gtk_settings_get_default ();
if (settings)
_gtk_style_init_for_settings (style, settings);
else
style->font_desc = pango_font_description_from_string ("Sans 10");
style->attach_count = 0;
style->black.red = 0;
style->black.green = 0;
style->black.blue = 0;
style->white.red = 65535;
style->white.green = 65535;
style->white.blue = 65535;
style->fg[GTK_STATE_NORMAL] = gtk_default_normal_fg;
style->fg[GTK_STATE_ACTIVE] = gtk_default_active_fg;
style->fg[GTK_STATE_PRELIGHT] = gtk_default_prelight_fg;
style->fg[GTK_STATE_SELECTED] = gtk_default_selected_fg;
style->fg[GTK_STATE_INSENSITIVE] = gtk_default_insensitive_fg;
style->bg[GTK_STATE_NORMAL] = gtk_default_normal_bg;
style->bg[GTK_STATE_ACTIVE] = gtk_default_active_bg;
style->bg[GTK_STATE_PRELIGHT] = gtk_default_prelight_bg;
style->bg[GTK_STATE_SELECTED] = gtk_default_selected_bg;
style->bg[GTK_STATE_INSENSITIVE] = gtk_default_insensitive_bg;
for (i = 0; i < 4; i++)
{
style->text[i] = style->fg[i];
style->base[i] = style->white;
}
style->base[GTK_STATE_SELECTED] = gtk_default_selected_base;
style->text[GTK_STATE_SELECTED] = style->white;
style->base[GTK_STATE_ACTIVE] = gtk_default_active_base;
style->text[GTK_STATE_ACTIVE] = style->white;
style->base[GTK_STATE_INSENSITIVE] = gtk_default_prelight_bg;
style->text[GTK_STATE_INSENSITIVE] = gtk_default_insensitive_fg;
style->rc_style = NULL;
style->xthickness = 2;
style->ythickness = 2;
style->property_cache = NULL;
}
static void
gtk_style_class_init (GtkStyleClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_style_finalize;
object_class->set_property = gtk_style_set_property;
object_class->constructed = gtk_style_constructed;
klass->clone = gtk_style_real_clone;
klass->copy = gtk_style_real_copy;
klass->init_from_rc = gtk_style_real_init_from_rc;
klass->realize = gtk_style_real_realize;
klass->unrealize = gtk_style_real_unrealize;
klass->set_background = gtk_style_real_set_background;
klass->render_icon = gtk_default_render_icon;
klass->draw_hline = gtk_default_draw_hline;
klass->draw_vline = gtk_default_draw_vline;
klass->draw_shadow = gtk_default_draw_shadow;
klass->draw_arrow = gtk_default_draw_arrow;
klass->draw_diamond = gtk_default_draw_diamond;
klass->draw_box = gtk_default_draw_box;
klass->draw_flat_box = gtk_default_draw_flat_box;
klass->draw_check = gtk_default_draw_check;
klass->draw_option = gtk_default_draw_option;
klass->draw_tab = gtk_default_draw_tab;
klass->draw_shadow_gap = gtk_default_draw_shadow_gap;
klass->draw_box_gap = gtk_default_draw_box_gap;
klass->draw_extension = gtk_default_draw_extension;
klass->draw_focus = gtk_default_draw_focus;
klass->draw_slider = gtk_default_draw_slider;
klass->draw_handle = gtk_default_draw_handle;
klass->draw_expander = gtk_default_draw_expander;
klass->draw_layout = gtk_default_draw_layout;
klass->draw_resize_grip = gtk_default_draw_resize_grip;
klass->draw_spinner = gtk_default_draw_spinner;
g_type_class_add_private (object_class, sizeof (GtkStylePrivate));
g_object_class_install_property (object_class,
PROP_CONTEXT,
g_param_spec_object ("context",
P_("Style context"),
P_("GtkStyleContext to get style from"),
GTK_TYPE_STYLE_CONTEXT,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE));
/**
* GtkStyle::realize:
* @style: the object which received the signal
*
* Emitted when the style has been initialized for a particular
* visual. Connecting to this signal is probably seldom
* useful since most of the time applications and widgets only
* deal with styles that have been already realized.
*
* Since: 2.4
*/
realize_signal = g_signal_new (I_("realize"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkStyleClass, realize),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkStyle::unrealize:
* @style: the object which received the signal
*
* Emitted when the aspects of the style specific to a particular visual
* is being cleaned up. A connection to this signal can be useful
* if a widget wants to cache objects as object data on #GtkStyle.
* This signal provides a convenient place to free such cached objects.
*
* Since: 2.4
*/
unrealize_signal = g_signal_new (I_("unrealize"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkStyleClass, unrealize),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
clear_property_cache (GtkStyle *style)
{
if (style->property_cache)
{
guint i;
for (i = 0; i < style->property_cache->len; i++)
{
PropertyValue *node = &g_array_index (style->property_cache, PropertyValue, i);
g_param_spec_unref (node->pspec);
g_value_unset (&node->value);
}
g_array_free (style->property_cache, TRUE);
style->property_cache = NULL;
}
}
static void
gtk_style_finalize (GObject *object)
{
GtkStyle *style = GTK_STYLE (object);
GtkStylePrivate *priv = GTK_STYLE_GET_PRIVATE (style);
g_return_if_fail (style->attach_count == 0);
clear_property_cache (style);
/* All the styles in the list have the same
* style->styles pointer. If we delete the
* *first* style from the list, we need to update
* the style->styles pointers from all the styles.
* Otherwise we simply remove the node from
* the list.
*/
if (style->styles)
{
if (style->styles->data != style)
style->styles = g_slist_remove (style->styles, style);
else
{
GSList *tmp_list = style->styles->next;
while (tmp_list)
{
GTK_STYLE (tmp_list->data)->styles = style->styles->next;
tmp_list = tmp_list->next;
}
g_slist_free_1 (style->styles);
}
}
g_slist_foreach (style->icon_factories, (GFunc) g_object_unref, NULL);
g_slist_free (style->icon_factories);
g_slist_foreach (priv->color_hashes, (GFunc) g_hash_table_unref, NULL);
g_slist_free (priv->color_hashes);
pango_font_description_free (style->font_desc);
if (style->private_font_desc)
pango_font_description_free (style->private_font_desc);
if (style->rc_style)
g_object_unref (style->rc_style);
if (priv->context)
g_object_unref (priv->context);
G_OBJECT_CLASS (gtk_style_parent_class)->finalize (object);
}
static void
gtk_style_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkStylePrivate *priv;
priv = GTK_STYLE_GET_PRIVATE (object);
switch (prop_id)
{
case PROP_CONTEXT:
priv->context = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
set_color (GtkStyle *style,
GtkStyleContext *context,
GtkStateType state,
GtkRcFlags prop)
{
GdkRGBA *color = NULL;
GdkColor *dest = { 0 }; /* Shut up gcc */
switch (prop)
{
case GTK_RC_BG:
gtk_style_context_get (context, state,
"background-color", &color,
NULL);
dest = &style->bg[state];
break;
case GTK_RC_FG:
gtk_style_context_get (context, state,
"color", &color,
NULL);
dest = &style->fg[state];
break;
case GTK_RC_TEXT:
gtk_style_context_get (context, state,
"color", &color,
NULL);
dest = &style->text[state];
break;
case GTK_RC_BASE:
gtk_style_context_get (context, state,
"background-color", &color,
NULL);
dest = &style->base[state];
break;
}
if (color)
{
dest->pixel = 0;
dest->red = CLAMP ((guint) (color->red * 65535), 0, 65535);
dest->green = CLAMP ((guint) (color->green * 65535), 0, 65535);
dest->blue = CLAMP ((guint) (color->blue * 65535), 0, 65535);
gdk_rgba_free (color);
}
}
static void
gtk_style_update_from_context (GtkStyle *style)
{
GtkStylePrivate *priv;
GtkStateType state;
GtkBorder *padding;
priv = GTK_STYLE_GET_PRIVATE (style);
for (state = GTK_STATE_NORMAL; state <= GTK_STATE_INSENSITIVE; state++)
{
if (gtk_style_context_has_class (priv->context, "entry"))
{
gtk_style_context_save (priv->context);
gtk_style_context_remove_class (priv->context, "entry");
set_color (style, priv->context, state, GTK_RC_BG);
set_color (style, priv->context, state, GTK_RC_FG);
gtk_style_context_restore (priv->context);
set_color (style, priv->context, state, GTK_RC_BASE);
set_color (style, priv->context, state, GTK_RC_TEXT);
}
else
{
gtk_style_context_save (priv->context);
gtk_style_context_add_class (priv->context, "entry");
set_color (style, priv->context, state, GTK_RC_BASE);
set_color (style, priv->context, state, GTK_RC_TEXT);
gtk_style_context_restore (priv->context);
set_color (style, priv->context, state, GTK_RC_BG);
set_color (style, priv->context, state, GTK_RC_FG);
}
}
if (style->font_desc)
pango_font_description_free (style->font_desc);
gtk_style_context_get (priv->context, state,
"font", &style->font_desc,
"padding", &padding,
NULL);
if (padding)
{
style->xthickness = padding->left;
style->ythickness = padding->top;
gtk_border_free (padding);
}
}
static void
gtk_style_constructed (GObject *object)
{
GtkStylePrivate *priv;
priv = GTK_STYLE_GET_PRIVATE (object);
if (priv->context)
{
gtk_style_update_from_context (GTK_STYLE (object));
/* FIXME: Listen to context changes */
}
}
/**
* gtk_style_copy:
* @style: a #GtkStyle
*
* Creates a copy of the passed in #GtkStyle object.
*
* Returns: (transfer full): a copy of @style
*/
GtkStyle*
gtk_style_copy (GtkStyle *style)
{
GtkStyle *new_style;
g_return_val_if_fail (GTK_IS_STYLE (style), NULL);
new_style = GTK_STYLE_GET_CLASS (style)->clone (style);
GTK_STYLE_GET_CLASS (style)->copy (new_style, style);
return new_style;
}
static GtkStyle*
gtk_style_duplicate (GtkStyle *style)
{
GtkStyle *new_style;
g_return_val_if_fail (GTK_IS_STYLE (style), NULL);
new_style = gtk_style_copy (style);
/* All the styles in the list have the same
* style->styles pointer. When we insert a new
* style, we append it to the list to avoid having
* to update the existing ones.
*/
style->styles = g_slist_append (style->styles, new_style);
new_style->styles = style->styles;
return new_style;
}
/**
* gtk_style_new:
* @returns: a new #GtkStyle.
*
* Creates a new #GtkStyle.
**/
GtkStyle*
gtk_style_new (void)
{
GtkStyle *style;
style = g_object_new (GTK_TYPE_STYLE, NULL);
return style;
}
gboolean
gtk_style_has_context (GtkStyle *style)
{
GtkStylePrivate *priv;
priv = GTK_STYLE_GET_PRIVATE (style);
return priv->context != NULL;
}
/**
* gtk_style_attach:
* @style: a #GtkStyle.
* @window: a #GdkWindow.
*
* Attaches a style to a window; this process allocates the
* colors and creates the GC's for the style - it specializes
* it to a particular visual. The process may involve the creation
* of a new style if the style has already been attached to a
* window with a different style and visual.
*
* Since this function may return a new object, you have to use it
* in the following way:
* <literal>style = gtk_style_attach (style, window)</literal>
*
* Returns: Either @style, or a newly-created #GtkStyle.
* If the style is newly created, the style parameter
* will be unref'ed, and the new style will have
* a reference count belonging to the caller.
*/
GtkStyle*
gtk_style_attach (GtkStyle *style,
GdkWindow *window)
{
GSList *styles;
GtkStyle *new_style = NULL;
GdkVisual *visual;
g_return_val_if_fail (GTK_IS_STYLE (style), NULL);
g_return_val_if_fail (window != NULL, NULL);
visual = gdk_window_get_visual (window);
if (!style->styles)
style->styles = g_slist_append (NULL, style);
styles = style->styles;
while (styles)
{
new_style = styles->data;
if (new_style->visual == visual)
break;
new_style = NULL;
styles = styles->next;
}
if (!new_style)
{
styles = style->styles;
while (styles)
{
new_style = styles->data;
if (new_style->attach_count == 0)
{
gtk_style_realize (new_style, visual);
break;
}
new_style = NULL;
styles = styles->next;
}
}
if (!new_style)
{
new_style = gtk_style_duplicate (style);
gtk_style_realize (new_style, visual);
}
/* A style gets a refcount from being attached */
if (new_style->attach_count == 0)
g_object_ref (new_style);
/* Another refcount belongs to the parent */
if (style != new_style)
{
g_object_unref (style);
g_object_ref (new_style);
}
new_style->attach_count++;
return new_style;
}
/**
* gtk_style_detach:
* @style: a #GtkStyle
*
* Detaches a style from a window. If the style is not attached
* to any windows anymore, it is unrealized. See gtk_style_attach().
*
*/
void
gtk_style_detach (GtkStyle *style)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (style->attach_count > 0);
style->attach_count -= 1;
if (style->attach_count == 0)
{
g_signal_emit (style, unrealize_signal, 0);
g_object_unref (style->visual);
style->visual = NULL;
if (style->private_font_desc)
{
pango_font_description_free (style->private_font_desc);
style->private_font_desc = NULL;
}
g_object_unref (style);
}
}
static void
gtk_style_realize (GtkStyle *style,
GdkVisual *visual)
{
style->visual = g_object_ref (visual);
g_signal_emit (style, realize_signal, 0);
}
/**
* gtk_style_lookup_icon_set:
* @style: a #GtkStyle
* @stock_id: an icon name
*
* Looks up @stock_id in the icon factories associated with @style
* and the default icon factory, returning an icon set if found,
* otherwise %NULL.
*
* Return value: icon set of @stock_id
*/
GtkIconSet*
gtk_style_lookup_icon_set (GtkStyle *style,
const char *stock_id)
{
GtkStylePrivate *priv;
g_return_val_if_fail (GTK_IS_STYLE (style), NULL);
g_return_val_if_fail (stock_id != NULL, NULL);
priv = GTK_STYLE_GET_PRIVATE (style);
return gtk_style_context_lookup_icon_set (priv->context, stock_id);
}
/**
* gtk_style_lookup_color:
* @style: a #GtkStyle
* @color_name: the name of the logical color to look up
* @color: the #GdkColor to fill in
*
* Looks up @color_name in the style's logical color mappings,
* filling in @color and returning %TRUE if found, otherwise
* returning %FALSE. Do not cache the found mapping, because
* it depends on the #GtkStyle and might change when a theme
* switch occurs.
*
* Return value: %TRUE if the mapping was found.
*
* Since: 2.10
**/
gboolean
gtk_style_lookup_color (GtkStyle *style,
const char *color_name,
GdkColor *color)
{
GtkStylePrivate *priv;
gboolean result;
GdkRGBA rgba;
g_return_val_if_fail (GTK_IS_STYLE (style), FALSE);
g_return_val_if_fail (color_name != NULL, FALSE);
g_return_val_if_fail (color != NULL, FALSE);
priv = GTK_STYLE_GET_PRIVATE (style);
if (!priv->context)
return FALSE;
result = gtk_style_context_lookup_color (priv->context, color_name, &rgba);
if (color)
{
color->red = (guint16) (rgba.red * 65535);
color->green = (guint16) (rgba.green * 65535);
color->blue = (guint16) (rgba.blue * 65535);
color->pixel = 0;
}
return result;
}
/**
* gtk_style_set_background:
* @style: a #GtkStyle
* @window: a #GdkWindow
* @state_type: a state
*
* Sets the background of @window to the background color or pixmap
* specified by @style for the given state.
*/
void
gtk_style_set_background (GtkStyle *style,
GdkWindow *window,
GtkStateType state_type)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (window != NULL);
GTK_STYLE_GET_CLASS (style)->set_background (style, window, state_type);
}
/* Default functions */
static GtkStyle *
gtk_style_real_clone (GtkStyle *style)
{
GtkStylePrivate *priv;
priv = GTK_STYLE_GET_PRIVATE (style);
return g_object_new (G_OBJECT_TYPE (style),
"context", priv->context,
NULL);
}
static void
gtk_style_real_copy (GtkStyle *style,
GtkStyle *src)
{
GtkStylePrivate *priv = GTK_STYLE_GET_PRIVATE (style);
GtkStylePrivate *src_priv = GTK_STYLE_GET_PRIVATE (src);
gint i;
for (i = 0; i < 5; i++)
{
style->fg[i] = src->fg[i];
style->bg[i] = src->bg[i];
style->text[i] = src->text[i];
style->base[i] = src->base[i];
if (style->background[i])
cairo_pattern_destroy (style->background[i]),
style->background[i] = src->background[i];
if (style->background[i])
cairo_pattern_reference (style->background[i]);
}
if (style->font_desc)
pango_font_description_free (style->font_desc);
if (src->font_desc)
style->font_desc = pango_font_description_copy (src->font_desc);
else
style->font_desc = NULL;
style->xthickness = src->xthickness;
style->ythickness = src->ythickness;
if (style->rc_style)
g_object_unref (style->rc_style);
style->rc_style = src->rc_style;
if (src->rc_style)
g_object_ref (src->rc_style);
g_slist_foreach (style->icon_factories, (GFunc) g_object_unref, NULL);
g_slist_free (style->icon_factories);
style->icon_factories = g_slist_copy (src->icon_factories);
g_slist_foreach (style->icon_factories, (GFunc) g_object_ref, NULL);
g_slist_foreach (priv->color_hashes, (GFunc) g_hash_table_unref, NULL);
g_slist_free (priv->color_hashes);
priv->color_hashes = g_slist_copy (src_priv->color_hashes);
g_slist_foreach (priv->color_hashes, (GFunc) g_hash_table_ref, NULL);
/* don't copy, just clear cache */
clear_property_cache (style);
}
static void
gtk_style_real_init_from_rc (GtkStyle *style,
GtkRcStyle *rc_style)
{
GtkStylePrivate *priv = GTK_STYLE_GET_PRIVATE (style);
gint i;
/* cache _should_ be still empty */
clear_property_cache (style);
if (rc_style->font_desc)
pango_font_description_merge (style->font_desc, rc_style->font_desc, TRUE);
for (i = 0; i < 5; i++)
{
if (rc_style->color_flags[i] & GTK_RC_FG)
style->fg[i] = rc_style->fg[i];
if (rc_style->color_flags[i] & GTK_RC_BG)
style->bg[i] = rc_style->bg[i];
if (rc_style->color_flags[i] & GTK_RC_TEXT)
style->text[i] = rc_style->text[i];
if (rc_style->color_flags[i] & GTK_RC_BASE)
style->base[i] = rc_style->base[i];
}
if (rc_style->xthickness >= 0)
style->xthickness = rc_style->xthickness;
if (rc_style->ythickness >= 0)
style->ythickness = rc_style->ythickness;
style->icon_factories = g_slist_copy (rc_style->icon_factories);
g_slist_foreach (style->icon_factories, (GFunc) g_object_ref, NULL);
priv->color_hashes = g_slist_copy (_gtk_rc_style_get_color_hashes (rc_style));
g_slist_foreach (priv->color_hashes, (GFunc) g_hash_table_ref, NULL);
}
static gint
style_property_values_cmp (gconstpointer bsearch_node1,
gconstpointer bsearch_node2)
{
const PropertyValue *val1 = bsearch_node1;
const PropertyValue *val2 = bsearch_node2;
if (val1->widget_type == val2->widget_type)
return val1->pspec < val2->pspec ? -1 : val1->pspec == val2->pspec ? 0 : 1;
else
return val1->widget_type < val2->widget_type ? -1 : 1;
}
/**
* gtk_style_get_style_property:
* @style: a #GtkStyle
* @widget_type: the #GType of a descendant of #GtkWidget
* @property_name: the name of the style property to get
* @value: a #GValue where the value of the property being
* queried will be stored
*
* Queries the value of a style property corresponding to a
* widget class is in the given style.
*
* Since: 2.16
*/
void
gtk_style_get_style_property (GtkStyle *style,
GType widget_type,
const gchar *property_name,
GValue *value)
{
GtkWidgetClass *klass;
GParamSpec *pspec;
GtkRcPropertyParser parser;
const GValue *peek_value;
klass = g_type_class_ref (widget_type);
pspec = gtk_widget_class_find_style_property (klass, property_name);
g_type_class_unref (klass);
if (!pspec)
{
g_warning ("%s: widget class `%s' has no property named `%s'",
G_STRLOC,
g_type_name (widget_type),
property_name);
return;
}
parser = g_param_spec_get_qdata (pspec,
g_quark_from_static_string ("gtk-rc-property-parser"));
peek_value = _gtk_style_peek_property_value (style, widget_type, pspec, parser);
if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
g_value_copy (peek_value, value);
else if (g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
g_value_transform (peek_value, value);
else
g_warning ("can't retrieve style property `%s' of type `%s' as value of type `%s'",
pspec->name,
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
G_VALUE_TYPE_NAME (value));
}
/**
* gtk_style_get_valist:
* @style: a #GtkStyle
* @widget_type: the #GType of a descendant of #GtkWidget
* @first_property_name: the name of the first style property to get
* @var_args: a <type>va_list</type> of pairs of property names and
* locations to return the property values, starting with the
* location for @first_property_name.
*
* Non-vararg variant of gtk_style_get().
* Used primarily by language bindings.
*
* Since: 2.16
*/
void
gtk_style_get_valist (GtkStyle *style,
GType widget_type,
const gchar *first_property_name,
va_list var_args)
{
const char *property_name;
GtkWidgetClass *klass;
g_return_if_fail (GTK_IS_STYLE (style));
klass = g_type_class_ref (widget_type);
property_name = first_property_name;
while (property_name)
{
GParamSpec *pspec;
GtkRcPropertyParser parser;
const GValue *peek_value;
gchar *error;
pspec = gtk_widget_class_find_style_property (klass, property_name);
if (!pspec)
{
g_warning ("%s: widget class `%s' has no property named `%s'",
G_STRLOC,
g_type_name (widget_type),
property_name);
break;
}
parser = g_param_spec_get_qdata (pspec,
g_quark_from_static_string ("gtk-rc-property-parser"));
peek_value = _gtk_style_peek_property_value (style, widget_type, pspec, parser);
G_VALUE_LCOPY (peek_value, var_args, 0, &error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
break;
}
property_name = va_arg (var_args, gchar*);
}
g_type_class_unref (klass);
}
/**
* gtk_style_get:
* @style: a #GtkStyle
* @widget_type: the #GType of a descendant of #GtkWidget
* @first_property_name: the name of the first style property to get
* @Varargs: pairs of property names and locations to
* return the property values, starting with the location for
* @first_property_name, terminated by %NULL.
*
* Gets the values of a multiple style properties for @widget_type
* from @style.
*
* Since: 2.16
*/
void
gtk_style_get (GtkStyle *style,
GType widget_type,
const gchar *first_property_name,
...)
{
va_list var_args;
va_start (var_args, first_property_name);
gtk_style_get_valist (style, widget_type, first_property_name, var_args);
va_end (var_args);
}
const GValue*
_gtk_style_peek_property_value (GtkStyle *style,
GType widget_type,
GParamSpec *pspec,
GtkRcPropertyParser parser)
{
PropertyValue *pcache, key = { 0, NULL, { 0, } };
const GtkRcProperty *rcprop = NULL;
guint i;
g_return_val_if_fail (GTK_IS_STYLE (style), NULL);
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
g_return_val_if_fail (g_type_is_a (pspec->owner_type, GTK_TYPE_WIDGET), NULL);
g_return_val_if_fail (g_type_is_a (widget_type, pspec->owner_type), NULL);
key.widget_type = widget_type;
key.pspec = pspec;
/* need value cache array */
if (!style->property_cache)
style->property_cache = g_array_new (FALSE, FALSE, sizeof (PropertyValue));
else
{
pcache = bsearch (&key,
style->property_cache->data, style->property_cache->len,
sizeof (PropertyValue), style_property_values_cmp);
if (pcache)
return &pcache->value;
}
i = 0;
while (i < style->property_cache->len &&
style_property_values_cmp (&key, &g_array_index (style->property_cache, PropertyValue, i)) >= 0)
i++;
g_array_insert_val (style->property_cache, i, key);
pcache = &g_array_index (style->property_cache, PropertyValue, i);
/* cache miss, initialize value type, then set contents */
g_param_spec_ref (pcache->pspec);
g_value_init (&pcache->value, G_PARAM_SPEC_VALUE_TYPE (pspec));
/* value provided by rc style? */
if (style->rc_style)
{
GQuark prop_quark = g_quark_from_string (pspec->name);
do
{
rcprop = _gtk_rc_style_lookup_rc_property (style->rc_style,
g_type_qname (widget_type),
prop_quark);
if (rcprop)
break;
widget_type = g_type_parent (widget_type);
}
while (g_type_is_a (widget_type, pspec->owner_type));
}
/* when supplied by rc style, we need to convert */
if (rcprop && !_gtk_settings_parse_convert (parser, &rcprop->value,
pspec, &pcache->value))
{
gchar *contents = g_strdup_value_contents (&rcprop->value);
g_message ("%s: failed to retrieve property `%s::%s' of type `%s' from rc file value \"%s\" of type `%s'",
rcprop->origin ? rcprop->origin : "(for origin information, set GTK_DEBUG)",
g_type_name (pspec->owner_type), pspec->name,
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
contents,
G_VALUE_TYPE_NAME (&rcprop->value));
g_free (contents);
rcprop = NULL; /* needs default */
}
/* not supplied by rc style (or conversion failed), revert to default */
if (!rcprop)
g_param_value_set_default (pspec, &pcache->value);
return &pcache->value;
}
static cairo_pattern_t *
load_background (GdkVisual *visual,
GdkColor *bg_color,
const gchar *filename)
{
if (filename == NULL)
{
return cairo_pattern_create_rgb (bg_color->red / 65535.0,
bg_color->green / 65535.0,
bg_color->blue / 65535.0);
}
if (strcmp (filename, "<parent>") == 0)
return NULL;
else
{
GdkPixbuf *pixbuf;
cairo_surface_t *surface;
cairo_pattern_t *pattern;
cairo_t *cr;
GdkScreen *screen = gdk_visual_get_screen (visual);
pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
if (!pixbuf)
return NULL;
surface = gdk_window_create_similar_surface (gdk_screen_get_root_window (screen),
CAIRO_CONTENT_COLOR,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
cr = cairo_create (surface);
gdk_cairo_set_source_color (cr, bg_color);
cairo_paint (cr);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
g_object_unref (pixbuf);
pattern = cairo_pattern_create_for_surface (surface);
cairo_surface_destroy (surface);
return pattern;
}
}
static void
gtk_style_real_realize (GtkStyle *style)
{
gint i;
for (i = 0; i < 5; i++)
{
_gtk_style_shade (&style->bg[i], &style->light[i], LIGHTNESS_MULT);
_gtk_style_shade (&style->bg[i], &style->dark[i], DARKNESS_MULT);
style->mid[i].red = (style->light[i].red + style->dark[i].red) / 2;
style->mid[i].green = (style->light[i].green + style->dark[i].green) / 2;
style->mid[i].blue = (style->light[i].blue + style->dark[i].blue) / 2;
style->text_aa[i].red = (style->text[i].red + style->base[i].red) / 2;
style->text_aa[i].green = (style->text[i].green + style->base[i].green) / 2;
style->text_aa[i].blue = (style->text[i].blue + style->base[i].blue) / 2;
}
style->black.red = 0x0000;
style->black.green = 0x0000;
style->black.blue = 0x0000;
style->white.red = 0xffff;
style->white.green = 0xffff;
style->white.blue = 0xffff;
for (i = 0; i < 5; i++)
{
const char *image_name;
if (style->rc_style)
image_name = style->rc_style->bg_pixmap_name[i];
else
image_name = NULL;
style->background[i] = load_background (style->visual,
&style->bg[i],
image_name);
}
}
static void
gtk_style_real_unrealize (GtkStyle *style)
{
int i;
for (i = 0; i < 5; i++)
{
if (style->background[i])
{
cairo_pattern_destroy (style->background[i]);
style->background[i] = NULL;
}
}
style_unrealize_cursors (style);
}
static void
gtk_style_real_set_background (GtkStyle *style,
GdkWindow *window,
GtkStateType state_type)
{
gdk_window_set_background_pattern (window, style->background[state_type]);
}
/**
* gtk_style_render_icon:
* @style: a #GtkStyle
* @source: the #GtkIconSource specifying the icon to render
* @direction: a text direction
* @state: a state
* @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.
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
*
* Renders the icon specified by @source at the given @size
* according to the given parameters and returns the result in a
* pixbuf.
*
* Return value: (transfer full): a newly-created #GdkPixbuf
* containing the rendered icon
*/
GdkPixbuf *
gtk_style_render_icon (GtkStyle *style,
const GtkIconSource *source,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GtkWidget *widget,
const gchar *detail)
{
GdkPixbuf *pixbuf;
g_return_val_if_fail (GTK_IS_STYLE (style), NULL);
g_return_val_if_fail (GTK_STYLE_GET_CLASS (style)->render_icon != NULL, NULL);
pixbuf = GTK_STYLE_GET_CLASS (style)->render_icon (style, source, direction, state,
size, widget, detail);
g_return_val_if_fail (pixbuf != NULL, NULL);
return pixbuf;
}
/* Default functions */
/**
* gtk_style_apply_default_background:
* @style:
* @cr:
* @window:
* @set_bg:
* @state_type:
* @area: (allow-none):
* @x:
* @y:
* @width:
* @height:
*/
void
gtk_style_apply_default_background (GtkStyle *style,
cairo_t *cr,
GdkWindow *window,
GtkStateType state_type,
gint x,
gint y,
gint width,
gint height)
{
cairo_save (cr);
if (style->background[state_type] == NULL)
{
GdkWindow *parent = gdk_window_get_parent (window);
int x_offset, y_offset;
if (parent)
{
gdk_window_get_position (window, &x_offset, &y_offset);
cairo_translate (cr, -x_offset, -y_offset);
gtk_style_apply_default_background (style, cr,
parent, state_type,
x + x_offset, y + y_offset,
width, height);
goto out;
}
else
gdk_cairo_set_source_color (cr, &style->bg[state_type]);
}
else
cairo_set_source (cr, style->background[state_type]);
cairo_rectangle (cr, x, y, width, height);
cairo_fill (cr);
out:
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 gboolean
lookup_icon_size (GtkStyle *style,
GtkWidget *widget,
GtkIconSize size,
gint *width,
gint *height)
{
GdkScreen *screen;
GtkSettings *settings;
if (widget && gtk_widget_has_screen (widget))
{
screen = gtk_widget_get_screen (widget);
settings = gtk_settings_get_for_screen (screen);
}
else if (style && style->visual)
{
screen = gdk_visual_get_screen (style->visual);
settings = gtk_settings_get_for_screen (screen);
}
else
{
settings = gtk_settings_get_default ();
GTK_NOTE (MULTIHEAD,
g_warning ("Using the default screen for gtk_default_render_icon()"));
}
return gtk_icon_size_lookup_for_settings (settings, size, width, height);
}
static GdkPixbuf *
gtk_default_render_icon (GtkStyle *style,
const GtkIconSource *source,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GtkWidget *widget,
const gchar *detail)
{
gint width = 1;
gint height = 1;
GdkPixbuf *scaled;
GdkPixbuf *stated;
GdkPixbuf *base_pixbuf;
/* Oddly, style can be NULL in this function, because
* GtkIconSet can be used without a style and if so
* it uses this function.
*/
base_pixbuf = gtk_icon_source_get_pixbuf (source);
g_return_val_if_fail (base_pixbuf != NULL, NULL);
if (size != (GtkIconSize) -1 && !lookup_icon_size(style, widget, 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.
*/
if (size != (GtkIconSize)-1 && gtk_icon_source_get_size_wildcarded (source))
scaled = scale_or_ref (base_pixbuf, width, height);
else
scaled = g_object_ref (base_pixbuf);
/* If the state was wildcarded, then generate a state. */
if (gtk_icon_source_get_state_wildcarded (source))
{
if (state == GTK_STATE_INSENSITIVE)
{
stated = gdk_pixbuf_copy (scaled);
gdk_pixbuf_saturate_and_pixelate (scaled, stated,
0.8, TRUE);
g_object_unref (scaled);
}
else if (state == GTK_STATE_PRELIGHT)
{
stated = gdk_pixbuf_copy (scaled);
gdk_pixbuf_saturate_and_pixelate (scaled, stated,
1.2, FALSE);
g_object_unref (scaled);
}
else
{
stated = scaled;
}
}
else
stated = scaled;
return stated;
}
static void
_cairo_draw_line (cairo_t *cr,
GdkColor *color,
gint x1,
gint y1,
gint x2,
gint y2)
{
cairo_save (cr);
gdk_cairo_set_source_color (cr, color);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
cairo_stroke (cr);
cairo_restore (cr);
}
static void
_cairo_draw_rectangle (cairo_t *cr,
GdkColor *color,
gboolean filled,
gint x,
gint y,
gint width,
gint height)
{
gdk_cairo_set_source_color (cr, color);
if (filled)
{
cairo_rectangle (cr, x, y, width, height);
cairo_fill (cr);
}
else
{
cairo_rectangle (cr, x + 0.5, y + 0.5, width, height);
cairo_stroke (cr);
}
}
static void
_cairo_draw_point (cairo_t *cr,
GdkColor *color,
gint x,
gint y)
{
gdk_cairo_set_source_color (cr, color);
cairo_rectangle (cr, x, y, 1, 1);
cairo_fill (cr);
}
static void
transform_detail_string (const gchar *detail,
GtkStyleContext *context)
{
if (!detail)
return;
if (strcmp (detail, "arrow") == 0)
gtk_style_context_add_class (context, "arrow");
else if (strcmp (detail, "button") == 0)
gtk_style_context_add_class (context, "button");
else if (strcmp (detail, "buttondefault") == 0)
{
gtk_style_context_add_class (context, "button");
gtk_style_context_add_class (context, "default");
}
else if (strcmp (detail, "calendar") == 0)
gtk_style_context_add_class (context, "calendar");
else if (strcmp (detail, "cellcheck") == 0)
{
gtk_style_context_add_class (context, "cell");
gtk_style_context_add_class (context, "check");
}
else if (strcmp (detail, "cellradio") == 0)
{
gtk_style_context_add_class (context, "cell");
gtk_style_context_add_class (context, "radio");
}
else if (strcmp (detail, "checkbutton") == 0)
gtk_style_context_add_class (context, "check");
else if (strcmp (detail, "check") == 0)
{
gtk_style_context_add_class (context, "check");
gtk_style_context_add_class (context, "menu");
}
else if (strcmp (detail, "option") == 0)
{
gtk_style_context_add_class (context, "radio");
gtk_style_context_add_class (context, "menu");
}
else if (strcmp (detail, "entry") == 0 ||
strcmp (detail, "entry_bg") == 0)
gtk_style_context_add_class (context, "entry");
else if (strcmp (detail, "expander") == 0)
gtk_style_context_add_class (context, "expander");
else if (strcmp (detail, "tooltip") == 0)
gtk_style_context_add_class (context, "tooltip");
else if (strcmp (detail, "frame") == 0)
gtk_style_context_add_class (context, "frame");
else if (strcmp (detail, "scrolled_window") == 0)
gtk_style_context_add_class (context, "scrolled-window");
else if (strcmp (detail, "viewport") == 0 ||
strcmp (detail, "viewportbin") == 0)
gtk_style_context_add_class (context, "viewport");
else if (strncmp (detail, "trough", 6) == 0)
{
gtk_style_context_add_class (context, "scrollbar");
gtk_style_context_add_class (context, "trough");
}
else if (strcmp (detail, "spinbutton") == 0)
gtk_style_context_add_class (context, "spinbutton");
else if (strcmp (detail, "spinbutton_up") == 0)
{
gtk_style_context_add_class (context, "spinbutton");
gtk_style_context_add_class (context, "button");
gtk_style_context_set_junction_sides (context, GTK_JUNCTION_BOTTOM);
}
else if (strcmp (detail, "spinbutton_down") == 0)
{
gtk_style_context_add_class (context, "spinbutton");
gtk_style_context_add_class (context, "button");
gtk_style_context_set_junction_sides (context, GTK_JUNCTION_TOP);
}
else if ((detail[0] == 'h' || detail[0] == 'v') &&
strncmp (&detail[1], "scrollbar_", 10) == 0)
{
gtk_style_context_add_class (context, "button");
gtk_style_context_add_class (context, "scrollbar");
}
else if (strcmp (detail, "slider") == 0)
{
gtk_style_context_add_class (context, "slider");
gtk_style_context_add_class (context, "scrollbar");
}
else if (strcmp (detail, "menuitem") == 0)
gtk_style_context_add_class (context, "menu");
else if (g_str_has_prefix (detail, "cell"))
{
GtkRegionFlags row, col;
gboolean ruled = FALSE;
GStrv tokens;
guint i;
tokens = g_strsplit (detail, "_", -1);
row = col = 0;
i = 0;
while (tokens[i])
{
if (strcmp (tokens[i], "even") == 0)
row |= GTK_REGION_EVEN;
else if (strcmp (tokens[i], "odd") == 0)
row |= GTK_REGION_ODD;
else if (strcmp (tokens[i], "start") == 0)
col |= GTK_REGION_FIRST;
else if (strcmp (tokens[i], "end") == 0)
col |= GTK_REGION_LAST;
else if (strcmp (tokens[i], "ruled") == 0)
ruled = TRUE;
else if (strcmp (tokens[i], "sorted") == 0)
col |= GTK_REGION_SORTED;
i++;
}
if (!ruled)
row &= ~(GTK_REGION_EVEN | GTK_REGION_ODD);
gtk_style_context_add_class (context, "cell");
gtk_style_context_add_region (context, "row", row);
gtk_style_context_add_region (context, "column", col);
g_strfreev (tokens);
}
}
static void
gtk_default_draw_hline (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x1,
gint x2,
gint y)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
cairo_save (cr);
gtk_render_line (context, cr,
x1, y, x2, y);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_vline (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint y1,
gint y2,
gint x)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
cairo_save (cr);
gtk_render_line (context, cr,
x, y1, x, y2);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
draw_thin_shadow (GtkStyle *style,
cairo_t *cr,
GtkStateType state,
gint x,
gint y,
gint width,
gint height)
{
GdkColor *gc1, *gc2;
gc1 = &style->light[state];
gc2 = &style->dark[state];
_cairo_draw_line (cr, gc1,
x, y + height - 1, x + width - 1, y + height - 1);
_cairo_draw_line (cr, gc1,
x + width - 1, y, x + width - 1, y + height - 1);
_cairo_draw_line (cr, gc2,
x, y, x + width - 2, y);
_cairo_draw_line (cr, gc2,
x, y, x, y + height - 2);
}
static void
draw_spinbutton_shadow (GtkStyle *style,
cairo_t *cr,
GtkStateType state,
GtkTextDirection direction,
gint x,
gint y,
gint width,
gint height)
{
if (direction == GTK_TEXT_DIR_LTR)
{
_cairo_draw_line (cr, &style->dark[state],
x, y, x + width - 1, y);
_cairo_draw_line (cr, &style->black,
x, y + 1, x + width - 2, y + 1);
_cairo_draw_line (cr, &style->black,
x + width - 2, y + 2, x + width - 2, y + height - 3);
_cairo_draw_line (cr, &style->light[state],
x + width - 1, y + 1, x + width - 1, y + height - 2);
_cairo_draw_line (cr, &style->light[state],
x, y + height - 1, x + width - 1, y + height - 1);
_cairo_draw_line (cr, &style->bg[state],
x, y + height - 2, x + width - 2, y + height - 2);
_cairo_draw_line (cr, &style->black,
x, y + 2, x, y + height - 3);
}
else
{
_cairo_draw_line (cr, &style->dark[state],
x, y, x + width - 1, y);
_cairo_draw_line (cr, &style->dark[state],
x, y + 1, x, y + height - 1);
_cairo_draw_line (cr, &style->black,
x + 1, y + 1, x + width - 1, y + 1);
_cairo_draw_line (cr, &style->black,
x + 1, y + 2, x + 1, y + height - 2);
_cairo_draw_line (cr, &style->black,
x + width - 1, y + 2, x + width - 1, y + height - 3);
_cairo_draw_line (cr, &style->light[state],
x + 1, y + height - 1, x + width - 1, y + height - 1);
_cairo_draw_line (cr, &style->bg[state],
x + 2, y + height - 2, x + width - 1, y + height - 2);
}
}
static void
draw_menu_shadow (GtkStyle *style,
cairo_t *cr,
GtkStateType state,
gint x,
gint y,
gint width,
gint height)
{
if (style->ythickness > 0)
{
if (style->ythickness > 1)
{
_cairo_draw_line (cr, &style->dark[state],
x + 1, y + height - 2,
x + width - 2, y + height - 2);
_cairo_draw_line (cr, &style->black,
x, y + height - 1, x + width - 1, y + height - 1);
}
else
{
_cairo_draw_line (cr, &style->dark[state],
x + 1, y + height - 1, x + width - 1, y + height - 1);
}
}
if (style->xthickness > 0)
{
if (style->xthickness > 1)
{
_cairo_draw_line (cr, &style->dark[state],
x + width - 2, y + 1,
x + width - 2, y + height - 2);
_cairo_draw_line (cr, &style->black,
x + width - 1, y, x + width - 1, y + height - 1);
}
else
{
_cairo_draw_line (cr, &style->dark[state],
x + width - 1, y + 1, x + width - 1, y + height - 1);
}
}
/* Light around top and left */
if (style->ythickness > 0)
_cairo_draw_line (cr, &style->black,
x, y, x + width - 2, y);
if (style->xthickness > 0)
_cairo_draw_line (cr, &style->black,
x, y, x, y + height - 2);
if (style->ythickness > 1)
_cairo_draw_line (cr, &style->light[state],
x + 1, y + 1, x + width - 3, y + 1);
if (style->xthickness > 1)
_cairo_draw_line (cr, &style->light[state],
x + 1, y + 1, x + 1, y + height - 3);
}
static GtkTextDirection
get_direction (GtkWidget *widget)
{
GtkTextDirection dir;
if (widget)
dir = gtk_widget_get_direction (widget);
else
dir = GTK_TEXT_DIR_LTR;
return dir;
}
static void
gtk_default_draw_shadow (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
cairo_save (cr);
gtk_render_frame (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
draw_arrow (cairo_t *cr,
GdkColor *color,
GtkArrowType arrow_type,
gint x,
gint y,
gint width,
gint height)
{
gdk_cairo_set_source_color (cr, color);
cairo_save (cr);
if (arrow_type == GTK_ARROW_DOWN)
{
cairo_move_to (cr, x, y);
cairo_line_to (cr, x + width, y);
cairo_line_to (cr, x + width / 2., y + height);
}
else if (arrow_type == GTK_ARROW_UP)
{
cairo_move_to (cr, x, y + height);
cairo_line_to (cr, x + width / 2., y);
cairo_line_to (cr, x + width, y + height);
}
else if (arrow_type == GTK_ARROW_LEFT)
{
cairo_move_to (cr, x + width, y);
cairo_line_to (cr, x + width, y + height);
cairo_line_to (cr, x, y + height / 2.);
}
else if (arrow_type == GTK_ARROW_RIGHT)
{
cairo_move_to (cr, x, y);
cairo_line_to (cr, x + width, y + height / 2.);
cairo_line_to (cr, x, y + height);
}
cairo_close_path (cr);
cairo_fill (cr);
cairo_restore (cr);
}
static void
calculate_arrow_geometry (GtkArrowType arrow_type,
gint *x,
gint *y,
gint *width,
gint *height)
{
gint w = *width;
gint h = *height;
switch (arrow_type)
{
case GTK_ARROW_UP:
case GTK_ARROW_DOWN:
w += (w % 2) - 1;
h = (w / 2 + 1);
if (h > *height)
{
h = *height;
w = 2 * h - 1;
}
if (arrow_type == GTK_ARROW_DOWN)
{
if (*height % 2 == 1 || h % 2 == 0)
*height += 1;
}
else
{
if (*height % 2 == 0 || h % 2 == 0)
*height -= 1;
}
break;
case GTK_ARROW_RIGHT:
case GTK_ARROW_LEFT:
h += (h % 2) - 1;
w = (h / 2 + 1);
if (w > *width)
{
w = *width;
h = 2 * w - 1;
}
if (arrow_type == GTK_ARROW_RIGHT)
{
if (*width % 2 == 1 || w % 2 == 0)
*width += 1;
}
else
{
if (*width % 2 == 0 || w % 2 == 0)
*width -= 1;
}
break;
default:
/* should not be reached */
break;
}
*x += (*width - w) / 2;
*y += (*height - h) / 2;
*height = h;
*width = w;
}
static void
gtk_default_draw_arrow (GtkStyle *style,
cairo_t *cr,
GtkStateType state,
GtkShadowType shadow,
GtkWidget *widget,
const gchar *detail,
GtkArrowType arrow_type,
gboolean fill,
gint x,
gint y,
gint width,
gint height)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
gdouble angle, size;
if (arrow_type == GTK_ARROW_NONE)
return;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (arrow_type)
{
case GTK_ARROW_UP:
angle = 0;
size = width;
break;
case GTK_ARROW_RIGHT:
angle = G_PI / 2;
size = height;
break;
case GTK_ARROW_DOWN:
angle = G_PI;
size = width;
break;
case GTK_ARROW_LEFT:
angle = 3 * (G_PI / 2);
size = height;
break;
default:
g_assert_not_reached ();
}
switch (state)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
case GTK_STATE_ACTIVE:
flags |= GTK_STATE_FLAG_ACTIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_arrow (context,
cr, angle,
(gdouble) x,
(gdouble) y,
size);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_diamond (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
gint half_width;
gint half_height;
GdkColor *outer_nw = NULL;
GdkColor *outer_ne = NULL;
GdkColor *outer_sw = NULL;
GdkColor *outer_se = NULL;
GdkColor *middle_nw = NULL;
GdkColor *middle_ne = NULL;
GdkColor *middle_sw = NULL;
GdkColor *middle_se = NULL;
GdkColor *inner_nw = NULL;
GdkColor *inner_ne = NULL;
GdkColor *inner_sw = NULL;
GdkColor *inner_se = NULL;
half_width = width / 2;
half_height = height / 2;
switch (shadow_type)
{
case GTK_SHADOW_IN:
inner_sw = inner_se = &style->bg[state_type];
middle_sw = middle_se = &style->light[state_type];
outer_sw = outer_se = &style->light[state_type];
inner_nw = inner_ne = &style->black;
middle_nw = middle_ne = &style->dark[state_type];
outer_nw = outer_ne = &style->dark[state_type];
break;
case GTK_SHADOW_OUT:
inner_sw = inner_se = &style->dark[state_type];
middle_sw = middle_se = &style->dark[state_type];
outer_sw = outer_se = &style->black;
inner_nw = inner_ne = &style->bg[state_type];
middle_nw = middle_ne = &style->light[state_type];
outer_nw = outer_ne = &style->light[state_type];
break;
case GTK_SHADOW_ETCHED_IN:
inner_sw = inner_se = &style->bg[state_type];
middle_sw = middle_se = &style->dark[state_type];
outer_sw = outer_se = &style->light[state_type];
inner_nw = inner_ne = &style->bg[state_type];
middle_nw = middle_ne = &style->light[state_type];
outer_nw = outer_ne = &style->dark[state_type];
break;
case GTK_SHADOW_ETCHED_OUT:
inner_sw = inner_se = &style->bg[state_type];
middle_sw = middle_se = &style->light[state_type];
outer_sw = outer_se = &style->dark[state_type];
inner_nw = inner_ne = &style->bg[state_type];
middle_nw = middle_ne = &style->dark[state_type];
outer_nw = outer_ne = &style->light[state_type];
break;
default:
break;
}
if (inner_sw)
{
_cairo_draw_line (cr, inner_sw,
x + 2, y + half_height,
x + half_width, y + height - 2);
_cairo_draw_line (cr, inner_se,
x + half_width, y + height - 2,
x + width - 2, y + half_height);
_cairo_draw_line (cr, middle_sw,
x + 1, y + half_height,
x + half_width, y + height - 1);
_cairo_draw_line (cr, middle_se,
x + half_width, y + height - 1,
x + width - 1, y + half_height);
_cairo_draw_line (cr, outer_sw,
x, y + half_height,
x + half_width, y + height);
_cairo_draw_line (cr, outer_se,
x + half_width, y + height,
x + width, y + half_height);
_cairo_draw_line (cr, inner_nw,
x + 2, y + half_height,
x + half_width, y + 2);
_cairo_draw_line (cr, inner_ne,
x + half_width, y + 2,
x + width - 2, y + half_height);
_cairo_draw_line (cr, middle_nw,
x + 1, y + half_height,
x + half_width, y + 1);
_cairo_draw_line (cr, middle_ne,
x + half_width, y + 1,
x + width - 1, y + half_height);
_cairo_draw_line (cr, outer_nw,
x, y + half_height,
x + half_width, y);
_cairo_draw_line (cr, outer_ne,
x + half_width, y,
x + width, y + half_height);
}
}
static void
option_menu_get_props (GtkWidget *widget,
GtkRequisition *indicator_size,
GtkBorder *indicator_spacing)
{
GtkRequisition *tmp_size = NULL;
GtkBorder *tmp_spacing = NULL;
if (tmp_size)
{
*indicator_size = *tmp_size;
gtk_requisition_free (tmp_size);
}
else
*indicator_size = default_option_indicator_size;
if (tmp_spacing)
{
*indicator_spacing = *tmp_spacing;
gtk_border_free (tmp_spacing);
}
else
*indicator_spacing = default_option_indicator_spacing;
}
static gboolean
background_is_solid (GtkStyle *style,
GtkStateType type)
{
if (style->background[type] == NULL)
return FALSE;
return cairo_pattern_get_type (style->background[type]) == CAIRO_PATTERN_TYPE_SOLID;
}
static void
gtk_default_draw_box (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_ACTIVE:
flags |= GTK_STATE_FLAG_ACTIVE;
break;
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
if (shadow_type == GTK_SHADOW_IN)
flags |= GTK_STATE_FLAG_ACTIVE;
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_background (context, cr, x, y, width, height);
gtk_render_frame (context, cr, x, y, width, height);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static GdkColor *
get_darkened (const GdkColor *color,
gint darken_count)
{
GdkColor src = *color;
GdkColor shaded = *color;
while (darken_count)
{
_gtk_style_shade (&src, &shaded, 0.93);
src = shaded;
--darken_count;
}
return gdk_color_copy (&shaded);
}
static void
gtk_default_draw_flat_box (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
case GTK_STATE_ACTIVE:
flags |= GTK_STATE_FLAG_ACTIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_background (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_check (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
if (shadow_type == GTK_SHADOW_IN)
flags |= GTK_STATE_FLAG_ACTIVE;
else if (shadow_type == GTK_SHADOW_ETCHED_IN)
flags |= GTK_STATE_FLAG_INCONSISTENT;
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_check (context,
cr, x, y,
width, height);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_option (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
if (shadow_type == GTK_SHADOW_IN)
flags |= GTK_STATE_FLAG_ACTIVE;
else if (shadow_type == GTK_SHADOW_ETCHED_IN)
flags |= GTK_STATE_FLAG_INCONSISTENT;
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_option (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_tab (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
#define ARROW_SPACE 4
GtkRequisition indicator_size;
GtkBorder indicator_spacing;
gint arrow_height;
option_menu_get_props (widget, &indicator_size, &indicator_spacing);
indicator_size.width += (indicator_size.width % 2) - 1;
arrow_height = indicator_size.width / 2 + 1;
x += (width - indicator_size.width) / 2;
y += (height - (2 * arrow_height + ARROW_SPACE)) / 2;
if (state_type == GTK_STATE_INSENSITIVE)
{
draw_arrow (cr, &style->white,
GTK_ARROW_UP, x + 1, y + 1,
indicator_size.width, arrow_height);
draw_arrow (cr, &style->white,
GTK_ARROW_DOWN, x + 1, y + arrow_height + ARROW_SPACE + 1,
indicator_size.width, arrow_height);
}
draw_arrow (cr, &style->fg[state_type],
GTK_ARROW_UP, x, y,
indicator_size.width, arrow_height);
draw_arrow (cr, &style->fg[state_type],
GTK_ARROW_DOWN, x, y + arrow_height + ARROW_SPACE,
indicator_size.width, arrow_height);
}
static void
gtk_default_draw_shadow_gap (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side,
gint gap_x,
gint gap_width)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_ACTIVE:
flags |= GTK_STATE_ACTIVE;
break;
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_frame_gap (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height,
gap_side,
(gdouble) gap_x,
(gdouble) gap_x + gap_width);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_box_gap (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side,
gint gap_x,
gint gap_width)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_ACTIVE:
flags |= GTK_STATE_ACTIVE;
break;
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_background (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height);
gtk_render_frame_gap (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height,
gap_side,
(gdouble) gap_x,
(gdouble) gap_x + gap_width);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_extension (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_ACTIVE:
flags |= GTK_STATE_ACTIVE;
break;
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_extension (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height,
gap_side);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_focus (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
cairo_save (cr);
gtk_render_focus (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_slider (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkOrientation orientation)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_slider (context, cr, x, y, width, height, orientation);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
draw_dot (cairo_t *cr,
GdkColor *light,
GdkColor *dark,
gint x,
gint y,
gushort size)
{
size = CLAMP (size, 2, 3);
if (size == 2)
{
_cairo_draw_point (cr, light, x, y);
_cairo_draw_point (cr, light, x+1, y+1);
}
else if (size == 3)
{
_cairo_draw_point (cr, light, x, y);
_cairo_draw_point (cr, light, x+1, y);
_cairo_draw_point (cr, light, x, y+1);
_cairo_draw_point (cr, dark, x+1, y+2);
_cairo_draw_point (cr, dark, x+2, y+1);
_cairo_draw_point (cr, dark, x+2, y+2);
}
}
static void
gtk_default_draw_handle (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkOrientation orientation)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_handle (context, cr,
(gdouble) x,
(gdouble) y,
(gdouble) width,
(gdouble) height);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_expander (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
GtkExpanderStyle expander_style)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
gint size;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
if (widget)
gtk_widget_style_get (widget, "expander-size", &size, NULL);
else
size = 12;
if (expander_style == GTK_EXPANDER_EXPANDED)
flags |= GTK_STATE_FLAG_ACTIVE;
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_expander (context, cr,
(gdouble) x - (size / 2),
(gdouble) y - (size / 2),
(gdouble) size,
(gdouble) size);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_layout (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
gboolean use_text,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
PangoLayout *layout)
{
GtkStyleContext *context;
GtkStylePrivate *priv;
GtkStateFlags flags = 0;
if (widget)
context = gtk_widget_get_style_context (widget);
else
{
priv = GTK_STYLE_GET_PRIVATE (style);
context = priv->context;
}
gtk_style_context_save (context);
if (detail)
transform_detail_string (detail, context);
switch (state_type)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
flags |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
cairo_save (cr);
gtk_render_layout (context, cr,
(gdouble) x,
(gdouble) y,
layout);
cairo_restore (cr);
gtk_style_context_restore (context);
}
static void
gtk_default_draw_resize_grip (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
GdkWindowEdge edge,
gint x,
gint y,
gint width,
gint height)
{
gint skip;
cairo_rectangle (cr, x, y, width, height);
cairo_clip (cr);
cairo_set_line_width (cr, 1.0);
skip = -1;
switch (edge)
{
case GDK_WINDOW_EDGE_NORTH_WEST:
/* make it square */
if (width < height)
height = width;
else if (height < width)
width = height;
skip = 2;
break;
case GDK_WINDOW_EDGE_NORTH:
if (width < height)
height = width;
break;
case GDK_WINDOW_EDGE_NORTH_EAST:
/* make it square, aligning to top right */
if (width < height)
height = width;
else if (height < width)
{
x += (width - height);
width = height;
}
skip = 3;
break;
case GDK_WINDOW_EDGE_WEST:
if (height < width)
width = height;
break;
case GDK_WINDOW_EDGE_EAST:
/* aligning to right */
if (height < width)
{
x += (width - height);
width = height;
}
break;
case GDK_WINDOW_EDGE_SOUTH_WEST:
/* make it square, aligning to bottom left */
if (width < height)
{
y += (height - width);
height = width;
}
else if (height < width)
width = height;
skip = 1;
break;
case GDK_WINDOW_EDGE_SOUTH:
/* align to bottom */
if (width < height)
{
y += (height - width);
height = width;
}
break;
case GDK_WINDOW_EDGE_SOUTH_EAST:
/* make it square, aligning to bottom right */
if (width < height)
{
y += (height - width);
height = width;
}
else if (height < width)
{
x += (width - height);
width = height;
}
skip = 0;
break;
default:
g_assert_not_reached ();
}
switch (edge)
{
case GDK_WINDOW_EDGE_WEST:
case GDK_WINDOW_EDGE_EAST:
{
gint xi;
xi = x;
while (xi < x + width)
{
_cairo_draw_line (cr,
&style->light[state_type],
xi, y,
xi, y + height);
xi++;
_cairo_draw_line (cr,
&style->dark[state_type],
xi, y,
xi, y + height);
xi += 2;
}
}
break;
case GDK_WINDOW_EDGE_NORTH:
case GDK_WINDOW_EDGE_SOUTH:
{
gint yi;
yi = y;
while (yi < y + height)
{
_cairo_draw_line (cr,
&style->light[state_type],
x, yi,
x + width, yi);
yi++;
_cairo_draw_line (cr,
&style->dark[state_type],
x, yi,
x + width, yi);
yi+= 2;
}
}
break;
case GDK_WINDOW_EDGE_NORTH_WEST:
{
gint xi, yi;
xi = x + width;
yi = y + height;
while (xi > x + 3)
{
_cairo_draw_line (cr,
&style->dark[state_type],
xi, y,
x, yi);
--xi;
--yi;
_cairo_draw_line (cr,
&style->dark[state_type],
xi, y,
x, yi);
--xi;
--yi;
_cairo_draw_line (cr,
&style->light[state_type],
xi, y,
x, yi);
xi -= 3;
yi -= 3;
}
}
break;
case GDK_WINDOW_EDGE_NORTH_EAST:
{
gint xi, yi;
xi = x;
yi = y + height;
while (xi < (x + width - 3))
{
_cairo_draw_line (cr,
&style->light[state_type],
xi, y,
x + width, yi);
++xi;
--yi;
_cairo_draw_line (cr,
&style->dark[state_type],
xi, y,
x + width, yi);
++xi;
--yi;
_cairo_draw_line (cr,
&style->dark[state_type],
xi, y,
x + width, yi);
xi += 3;
yi -= 3;
}
}
break;
case GDK_WINDOW_EDGE_SOUTH_WEST:
{
gint xi, yi;
xi = x + width;
yi = y;
while (xi > x + 3)
{
_cairo_draw_line (cr,
&style->dark[state_type],
x, yi,
xi, y + height);
--xi;
++yi;
_cairo_draw_line (cr,
&style->dark[state_type],
x, yi,
xi, y + height);
--xi;
++yi;
_cairo_draw_line (cr,
&style->light[state_type],
x, yi,
xi, y + height);
xi -= 3;
yi += 3;
}
}
break;
case GDK_WINDOW_EDGE_SOUTH_EAST:
{
gint xi, yi;
xi = x;
yi = y;
while (xi < (x + width - 3))
{
_cairo_draw_line (cr,
&style->light[state_type],
xi, y + height,
x + width, yi);
++xi;
++yi;
_cairo_draw_line (cr,
&style->dark[state_type],
xi, y + height,
x + width, yi);
++xi;
++yi;
_cairo_draw_line (cr,
&style->dark[state_type],
xi, y + height,
x + width, yi);
xi += 3;
yi += 3;
}
}
break;
default:
g_assert_not_reached ();
break;
}
}
static void
gtk_default_draw_spinner (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
guint step,
gint x,
gint y,
gint width,
gint height)
{
GdkColor *color;
guint num_steps;
gdouble dx, dy;
gdouble radius;
gdouble half;
gint i;
guint real_step;
gtk_style_get (style, GTK_TYPE_SPINNER,
"num-steps", &num_steps,
NULL);
real_step = step % num_steps;
/* set a clip region for the expose event */
cairo_rectangle (cr, x, y, width, height);
cairo_clip (cr);
cairo_translate (cr, x, y);
/* draw clip region */
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
color = &style->fg[state_type];
dx = width / 2;
dy = height / 2;
radius = MIN (width / 2, height / 2);
half = num_steps / 2;
for (i = 0; i < num_steps; i++)
{
gint inset = 0.7 * radius;
/* transparency is a function of time and intial value */
gdouble t = (gdouble) ((i + num_steps - real_step)
% num_steps) / num_steps;
cairo_save (cr);
cairo_set_source_rgba (cr,
color->red / 65535.,
color->green / 65535.,
color->blue / 65535.,
t);
cairo_set_line_width (cr, 2.0);
cairo_move_to (cr,
dx + (radius - inset) * cos (i * G_PI / half),
dy + (radius - inset) * sin (i * G_PI / half));
cairo_line_to (cr,
dx + radius * cos (i * G_PI / half),
dy + radius * sin (i * G_PI / half));
cairo_stroke (cr);
cairo_restore (cr);
}
}
void
_gtk_style_shade (const GdkColor *a,
GdkColor *b,
gdouble k)
{
gdouble red;
gdouble green;
gdouble blue;
red = (gdouble) a->red / 65535.0;
green = (gdouble) a->green / 65535.0;
blue = (gdouble) a->blue / 65535.0;
rgb_to_hls (&red, &green, &blue);
green *= k;
if (green > 1.0)
green = 1.0;
else if (green < 0.0)
green = 0.0;
blue *= k;
if (blue > 1.0)
blue = 1.0;
else if (blue < 0.0)
blue = 0.0;
hls_to_rgb (&red, &green, &blue);
b->red = red * 65535.0;
b->green = green * 65535.0;
b->blue = blue * 65535.0;
}
static void
rgb_to_hls (gdouble *r,
gdouble *g,
gdouble *b)
{
gdouble min;
gdouble max;
gdouble red;
gdouble green;
gdouble blue;
gdouble h, l, s;
gdouble delta;
red = *r;
green = *g;
blue = *b;
if (red > green)
{
if (red > blue)
max = red;
else
max = blue;
if (green < blue)
min = green;
else
min = blue;
}
else
{
if (green > blue)
max = green;
else
max = blue;
if (red < blue)
min = red;
else
min = blue;
}
l = (max + min) / 2;
s = 0;
h = 0;
if (max != min)
{
if (l <= 0.5)
s = (max - min) / (max + min);
else
s = (max - min) / (2 - max - min);
delta = max -min;
if (red == max)
h = (green - blue) / delta;
else if (green == max)
h = 2 + (blue - red) / delta;
else if (blue == max)
h = 4 + (red - green) / delta;
h *= 60;
if (h < 0.0)
h += 360;
}
*r = h;
*g = l;
*b = s;
}
static void
hls_to_rgb (gdouble *h,
gdouble *l,
gdouble *s)
{
gdouble hue;
gdouble lightness;
gdouble saturation;
gdouble m1, m2;
gdouble r, g, b;
lightness = *l;
saturation = *s;
if (lightness <= 0.5)
m2 = lightness * (1 + saturation);
else
m2 = lightness + saturation - lightness * saturation;
m1 = 2 * lightness - m2;
if (saturation == 0)
{
*h = lightness;
*l = lightness;
*s = lightness;
}
else
{
hue = *h + 120;
while (hue > 360)
hue -= 360;
while (hue < 0)
hue += 360;
if (hue < 60)
r = m1 + (m2 - m1) * hue / 60;
else if (hue < 180)
r = m2;
else if (hue < 240)
r = m1 + (m2 - m1) * (240 - hue) / 60;
else
r = m1;
hue = *h;
while (hue > 360)
hue -= 360;
while (hue < 0)
hue += 360;
if (hue < 60)
g = m1 + (m2 - m1) * hue / 60;
else if (hue < 180)
g = m2;
else if (hue < 240)
g = m1 + (m2 - m1) * (240 - hue) / 60;
else
g = m1;
hue = *h - 120;
while (hue > 360)
hue -= 360;
while (hue < 0)
hue += 360;
if (hue < 60)
b = m1 + (m2 - m1) * hue / 60;
else if (hue < 180)
b = m2;
else if (hue < 240)
b = m1 + (m2 - m1) * (240 - hue) / 60;
else
b = m1;
*h = r;
*l = g;
*s = b;
}
}
/**
* gtk_paint_hline:
* @style: a #GtkStyle
* @cr: a #caio_t
* @state_type: a state
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x1: the starting x coordinate
* @x2: the ending x coordinate
* @y: the y coordinate
*
* Draws a horizontal line from (@x1, @y) to (@x2, @y) in @cr
* using the given style and state.
**/
void
gtk_paint_hline (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x1,
gint x2,
gint y)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (cr != NULL);
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_hline != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_hline (style, cr, state_type,
widget, detail,
x1, x2, y);
cairo_restore (cr);
}
/**
* gtk_paint_vline:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @y1_: the starting y coordinate
* @y2_: the ending y coordinate
* @x: the x coordinate
*
* Draws a vertical line from (@x, @y1_) to (@x, @y2_) in @cr
* using the given style and state.
*/
void
gtk_paint_vline (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint y1_,
gint y2_,
gint x)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (cr != NULL);
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_vline != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_vline (style, cr, state_type,
widget, detail,
y1_, y2_, x);
cairo_restore (cr);
}
/**
* gtk_paint_shadow:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the rectangle
* @y: y origin of the rectangle
* @width: width of the rectangle
* @height: width of the rectangle
*
* Draws a shadow around the given rectangle in @cr
* using the given style and state and shadow type.
*/
void
gtk_paint_shadow (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_shadow != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_shadow (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_arrow:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: the type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @arrow_type: the type of arrow to draw
* @fill: %TRUE if the arrow tip should be filled
* @x: x origin of the rectangle to draw the arrow in
* @y: y origin of the rectangle to draw the arrow in
* @width: width of the rectangle to draw the arrow in
* @height: height of the rectangle to draw the arrow in
*
* Draws an arrow in the given rectangle on @cr using the given
* parameters. @arrow_type determines the direction of the arrow.
*/
void
gtk_paint_arrow (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
GtkArrowType arrow_type,
gboolean fill,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_arrow != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_arrow (style, cr, state_type, shadow_type,
widget, detail,
arrow_type, fill, x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_diamond:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: the type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the rectangle to draw the diamond in
* @y: y origin of the rectangle to draw the diamond in
* @width: width of the rectangle to draw the diamond in
* @height: height of the rectangle to draw the diamond in
*
* Draws a diamond in the given rectangle on @window using the given
* parameters.
*/
void
gtk_paint_diamond (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_diamond != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_diamond (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_box:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: the type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the box
* @y: y origin of the box
* @width: the width of the box
* @height: the height of the box
*
* Draws a box on @cr with the given parameters.
*/
void
gtk_paint_box (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_box != NULL);
g_return_if_fail (cr != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_box (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_flat_box:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: the type of shadow to draw
* @area: (allow-none): clip rectangle, or %NULL if the
* output should not be clipped
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the box
* @y: y origin of the box
* @width: the width of the box
* @height: the height of the box
*
* Draws a flat box on @cr with the given parameters.
*/
void
gtk_paint_flat_box (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_flat_box != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_flat_box (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_check:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: the type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the rectangle to draw the check in
* @y: y origin of the rectangle to draw the check in
* @width: the width of the rectangle to draw the check in
* @height: the height of the rectangle to draw the check in
*
* Draws a check button indicator in the given rectangle on @cr with
* the given parameters.
*/
void
gtk_paint_check (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_check != NULL);
g_return_if_fail (cr != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_check (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_option:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: the type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the rectangle to draw the option in
* @y: y origin of the rectangle to draw the option in
* @width: the width of the rectangle to draw the option in
* @height: the height of the rectangle to draw the option in
*
* Draws a radio button indicator in the given rectangle on @cr with
* the given parameters.
*/
void
gtk_paint_option (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_option != NULL);
g_return_if_fail (cr != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_option (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_tab:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: the type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the rectangle to draw the tab in
* @y: y origin of the rectangle to draw the tab in
* @width: the width of the rectangle to draw the tab in
* @height: the height of the rectangle to draw the tab in
*
* Draws an option menu tab (i.e. the up and down pointing arrows)
* in the given rectangle on @cr using the given parameters.
*/
void
gtk_paint_tab (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_tab != NULL);
g_return_if_fail (cr != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_tab (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_shadow_gap:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the rectangle
* @y: y origin of the rectangle
* @width: width of the rectangle
* @height: width of the rectangle
* @gap_side: side in which to leave the gap
* @gap_x: starting position of the gap
* @gap_width: width of the gap
*
* Draws a shadow around the given rectangle in @cr
* using the given style and state and shadow type, leaving a
* gap in one side.
*/
void
gtk_paint_shadow_gap (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side,
gint gap_x,
gint gap_width)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_shadow_gap != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_shadow_gap (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height, gap_side, gap_x, gap_width);
cairo_restore (cr);
}
/**
* gtk_paint_box_gap:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the rectangle
* @y: y origin of the rectangle
* @width: width of the rectangle
* @height: width of the rectangle
* @gap_side: side in which to leave the gap
* @gap_x: starting position of the gap
* @gap_width: width of the gap
*
* Draws a box in @cr using the given style and state and shadow type,
* leaving a gap in one side.
*/
void
gtk_paint_box_gap (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side,
gint gap_x,
gint gap_width)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_box_gap != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_box_gap (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height, gap_side, gap_x, gap_width);
cairo_restore (cr);
}
/**
* gtk_paint_extension:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the extension
* @y: y origin of the extension
* @width: width of the extension
* @height: width of the extension
* @gap_side: the side on to which the extension is attached
*
* Draws an extension, i.e. a notebook tab.
**/
void
gtk_paint_extension (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkPositionType gap_side)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_extension != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_extension (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height, gap_side);
cairo_restore (cr);
}
/**
* gtk_paint_focus:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: the x origin of the rectangle around which to draw a focus indicator
* @y: the y origin of the rectangle around which to draw a focus indicator
* @width: the width of the rectangle around which to draw a focus indicator
* @height: the height of the rectangle around which to draw a focus indicator
*
* Draws a focus indicator around the given rectangle on @cr using the
* given style.
*/
void
gtk_paint_focus (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_focus != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_focus (style, cr, state_type,
widget, detail,
x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_slider:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: a shadow
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: the x origin of the rectangle in which to draw a slider
* @y: the y origin of the rectangle in which to draw a slider
* @width: the width of the rectangle in which to draw a slider
* @height: the height of the rectangle in which to draw a slider
* @orientation: the orientation to be used
*
* Draws a slider in the given rectangle on @cr using the
* given style and orientation.
**/
void
gtk_paint_slider (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkOrientation orientation)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_slider != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_slider (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height, orientation);
cairo_restore (cr);
}
/**
* gtk_paint_handle:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @shadow_type: type of shadow to draw
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin of the handle
* @y: y origin of the handle
* @width: with of the handle
* @height: height of the handle
* @orientation: the orientation of the handle
*
* Draws a handle as used in #GtkHandleBox and #GtkPaned.
**/
void
gtk_paint_handle (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkShadowType shadow_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
gint width,
gint height,
GtkOrientation orientation)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_handle != NULL);
g_return_if_fail (cr != NULL);
g_return_if_fail (width >= 0);
g_return_if_fail (height >= 0);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_handle (style, cr, state_type, shadow_type,
widget, detail,
x, y, width, height, orientation);
cairo_restore (cr);
}
/**
* gtk_paint_expander:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: the x position to draw the expander at
* @y: the y position to draw the expander at
* @expander_style: the style to draw the expander in; determines
* whether the expander is collapsed, expanded, or in an
* intermediate state.
*
* Draws an expander as used in #GtkTreeView. @x and @y specify the
* center the expander. The size of the expander is determined by the
* "expander-size" style property of @widget. (If widget is not
* specified or doesn't have an "expander-size" property, an
* unspecified default size will be used, since the caller doesn't
* have sufficient information to position the expander, this is
* likely not useful.) The expander is expander_size pixels tall
* in the collapsed position and expander_size pixels wide in the
* expanded position.
**/
void
gtk_paint_expander (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
GtkExpanderStyle expander_style)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_expander != NULL);
g_return_if_fail (cr != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_expander (style, cr, state_type,
widget, detail,
x, y, expander_style);
cairo_restore (cr);
}
/**
* gtk_paint_layout:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @use_text: whether to use the text or foreground
* graphics context of @style
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @x: x origin
* @y: y origin
* @layout: the layout to draw
*
* Draws a layout on @cr using the given parameters.
**/
void
gtk_paint_layout (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
gboolean use_text,
GtkWidget *widget,
const gchar *detail,
gint x,
gint y,
PangoLayout *layout)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_layout != NULL);
g_return_if_fail (cr != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_layout (style, cr, state_type, use_text,
widget, detail,
x, y, layout);
cairo_restore (cr);
}
/**
* gtk_paint_resize_grip:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @widget: (allow-none): the widget
* @detail: (allow-none): a style detail
* @edge: the edge in which to draw the resize grip
* @x: the x origin of the rectangle in which to draw the resize grip
* @y: the y origin of the rectangle in which to draw the resize grip
* @width: the width of the rectangle in which to draw the resize grip
* @height: the height of the rectangle in which to draw the resize grip
*
* Draws a resize grip in the given rectangle on @cr using the given
* parameters.
*/
void
gtk_paint_resize_grip (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
GdkWindowEdge edge,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_resize_grip != NULL);
g_return_if_fail (cr != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_resize_grip (style, cr, state_type,
widget, detail,
edge, x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_paint_spinner:
* @style: a #GtkStyle
* @cr: a #cairo_t
* @state_type: a state
* @widget: (allow-none): the widget (may be %NULL)
* @detail: (allow-none): a style detail (may be %NULL)
* @step: the nth step, a value between 0 and #GtkSpinner:num-steps
* @x: the x origin of the rectangle in which to draw the spinner
* @y: the y origin of the rectangle in which to draw the spinner
* @width: the width of the rectangle in which to draw the spinner
* @height: the height of the rectangle in which to draw the spinner
*
* Draws a spinner on @window using the given parameters.
*/
void
gtk_paint_spinner (GtkStyle *style,
cairo_t *cr,
GtkStateType state_type,
GtkWidget *widget,
const gchar *detail,
guint step,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_STYLE (style));
g_return_if_fail (cr != NULL);
g_return_if_fail (GTK_STYLE_GET_CLASS (style)->draw_spinner != NULL);
cairo_save (cr);
GTK_STYLE_GET_CLASS (style)->draw_spinner (style, cr, state_type,
widget, detail,
step, x, y, width, height);
cairo_restore (cr);
}
/**
* gtk_border_new:
*
* Allocates a new #GtkBorder structure and initializes its elements to zero.
*
* Returns: a new empty #GtkBorder. The newly allocated #GtkBorder should be
* freed with gtk_border_free()
*
* Since: 2.14
**/
GtkBorder *
gtk_border_new (void)
{
return g_slice_new0 (GtkBorder);
}
/**
* gtk_border_copy:
* @border_: a #GtkBorder.
* @returns: a copy of @border_.
*
* Copies a #GtkBorder structure.
**/
GtkBorder *
gtk_border_copy (const GtkBorder *border)
{
g_return_val_if_fail (border != NULL, NULL);
return g_slice_dup (GtkBorder, border);
}
/**
* gtk_border_free:
* @border_: a #GtkBorder.
*
* Frees a #GtkBorder structure.
**/
void
gtk_border_free (GtkBorder *border)
{
g_slice_free (GtkBorder, border);
}
G_DEFINE_BOXED_TYPE (GtkBorder, gtk_border,
gtk_border_copy,
gtk_border_free)
typedef struct _CursorInfo CursorInfo;
struct _CursorInfo
{
GType for_type;
GdkColor primary;
GdkColor secondary;
};
static void
style_unrealize_cursors (GtkStyle *style)
{
CursorInfo *
cursor_info = g_object_get_data (G_OBJECT (style), "gtk-style-cursor-info");
if (cursor_info)
{
g_free (cursor_info);
g_object_set_data (G_OBJECT (style), I_("gtk-style-cursor-info"), NULL);
}
}
static const GdkColor *
get_insertion_cursor_color (GtkWidget *widget,
gboolean is_primary)
{
CursorInfo *cursor_info;
GtkStyle *style;
GdkColor *cursor_color;
style = gtk_widget_get_style (widget);
cursor_info = g_object_get_data (G_OBJECT (style), "gtk-style-cursor-info");
if (!cursor_info)
{
cursor_info = g_new0 (CursorInfo, 1);
g_object_set_data (G_OBJECT (style), I_("gtk-style-cursor-info"), cursor_info);
cursor_info->for_type = G_TYPE_INVALID;
}
/* We have to keep track of the type because gtk_widget_style_get()
* can return different results when called on the same property and
* same style but for different widgets. :-(. That is,
* GtkEntry::cursor-color = "red" in a style will modify the cursor
* color for entries but not for text view.
*/
if (cursor_info->for_type != G_OBJECT_TYPE (widget))
{
cursor_info->for_type = G_OBJECT_TYPE (widget);
/* Cursors in text widgets are drawn only in NORMAL state,
* so we can use text[GTK_STATE_NORMAL] as text color here */
gtk_widget_style_get (widget, "cursor-color", &cursor_color, NULL);
if (cursor_color)
{
cursor_info->primary = *cursor_color;
gdk_color_free (cursor_color);
}
else
{
cursor_info->primary = style->text[GTK_STATE_NORMAL];
}
gtk_widget_style_get (widget, "secondary-cursor-color", &cursor_color, NULL);
if (cursor_color)
{
cursor_info->secondary = *cursor_color;
gdk_color_free (cursor_color);
}
else
{
/* text_aa is the average of text and base colors,
* in usual black-on-white case it's grey. */
cursor_info->secondary = style->text_aa[GTK_STATE_NORMAL];
}
}
if (is_primary)
return &cursor_info->primary;
else
return &cursor_info->secondary;
}
void
_gtk_widget_get_cursor_color (GtkWidget *widget,
GdkColor *color)
{
GdkColor *style_color;
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (color != NULL);
gtk_widget_style_get (widget, "cursor-color", &style_color, NULL);
if (style_color)
{
*color = *style_color;
gdk_color_free (style_color);
}
else
*color = gtk_widget_get_style (widget)->text[GTK_STATE_NORMAL];
}
/**
* gtk_draw_insertion_cursor:
* @widget: a #GtkWidget
* @cr: cairo context to draw to
* @location: location where to draw the cursor (@location->width is ignored)
* @is_primary: if the cursor should be the primary cursor color.
* @direction: whether the cursor is left-to-right or
* right-to-left. Should never be #GTK_TEXT_DIR_NONE
* @draw_arrow: %TRUE to draw a directional arrow on the
* cursor. Should be %FALSE unless the cursor is split.
*
* Draws a text caret on @cr at @location. This is not a style function
* but merely a convenience function for drawing the standard cursor shape.
*
* Since: 3.0
**/
void
gtk_draw_insertion_cursor (GtkWidget *widget,
cairo_t *cr,
const GdkRectangle *location,
gboolean is_primary,
GtkTextDirection direction,
gboolean draw_arrow)
{
gint stem_width;
gint arrow_width;
gint x, y;
gfloat cursor_aspect_ratio;
gint offset;
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (cr != NULL);
g_return_if_fail (location != NULL);
g_return_if_fail (direction != GTK_TEXT_DIR_NONE);
gdk_cairo_set_source_color (cr, get_insertion_cursor_color (widget, is_primary));
/* When changing the shape or size of the cursor here,
* propagate the changes to gtktextview.c:text_window_invalidate_cursors().
*/
gtk_widget_style_get (widget, "cursor-aspect-ratio", &cursor_aspect_ratio, NULL);
stem_width = location->height * cursor_aspect_ratio + 1;
arrow_width = stem_width + 1;
/* put (stem_width % 2) on the proper side of the cursor */
if (direction == GTK_TEXT_DIR_LTR)
offset = stem_width / 2;
else
offset = stem_width - stem_width / 2;
cairo_rectangle (cr,
location->x - offset, location->y,
stem_width, location->height);
cairo_fill (cr);
if (draw_arrow)
{
if (direction == GTK_TEXT_DIR_RTL)
{
x = location->x - offset - 1;
y = location->y + location->height - arrow_width * 2 - arrow_width + 1;
cairo_move_to (cr, x, y + 1);
cairo_line_to (cr, x - arrow_width, y + arrow_width);
cairo_line_to (cr, x, y + 2 * arrow_width);
cairo_fill (cr);
}
else if (direction == GTK_TEXT_DIR_LTR)
{
x = location->x + stem_width - offset;
y = location->y + location->height - arrow_width * 2 - arrow_width + 1;
cairo_move_to (cr, x, y + 1);
cairo_line_to (cr, x + arrow_width, y + arrow_width);
cairo_line_to (cr, x, y + 2 * arrow_width);
cairo_fill (cr);
}
}
}
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