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59b0fa8133
gtk2/gtk/gtkthemingengine.c
Carlos Garnacho 59b0fa8133 Remove GtkOrientation parameter from gtk_render_handle(). 
The case for paned can be guessed out from the height and width,
for handlebox the orientation parameter doesn't make much sense,
and this way it could also be used for resize grips.
2010-12-04 15:38:21 +01:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
*
* 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.
*/
#include "config.h"
#include <math.h>
#include <gtk/gtk.h>
#include <gtk/gtkthemingengine.h>
#include <gtk/gtkstylecontext.h>
#include <gtk/gtkintl.h>
#include "gtk9slice.h"
#include "gtkpango.h"
typedef struct GtkThemingEnginePrivate GtkThemingEnginePrivate;
enum {
SIDE_LEFT = 1,
SIDE_BOTTOM = 1 << 1,
SIDE_RIGHT = 1 << 2,
SIDE_TOP = 1 << 3
};
struct GtkThemingEnginePrivate
{
GtkStyleContext *context;
};
#define GTK_THEMING_ENGINE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEnginePrivate))
static void gtk_theming_engine_render_check (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
static void gtk_theming_engine_render_option (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
static void gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
cairo_t *cr,
gdouble angle,
gdouble x,
gdouble y,
gdouble size);
static void gtk_theming_engine_render_background (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
static void gtk_theming_engine_render_frame (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
static void gtk_theming_engine_render_expander (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
static void gtk_theming_engine_render_focus (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
static void gtk_theming_engine_render_layout (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
PangoLayout *layout);
static void gtk_theming_engine_render_line (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x0,
gdouble y0,
gdouble x1,
gdouble y1);
static void gtk_theming_engine_render_slider (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkOrientation orientation);
static void gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkPositionType gap_side,
gdouble xy0_gap,
gdouble xy1_gap);
static void gtk_theming_engine_render_extension (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkPositionType gap_side);
static void gtk_theming_engine_render_handle (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT)
typedef struct GtkThemingModule GtkThemingModule;
typedef struct GtkThemingModuleClass GtkThemingModuleClass;
struct GtkThemingModule
{
GTypeModule parent_instance;
gchar *name;
GtkThemingEngine * (*create_engine) (void);
};
struct GtkThemingModuleClass
{
GTypeModuleClass parent_class;
};
#define GTK_TYPE_THEMING_MODULE (gtk_theming_module_get_type ())
#define GTK_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_MODULE, GtkThemingModule))
#define GTK_IS_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_MODULE))
G_DEFINE_TYPE (GtkThemingModule, gtk_theming_module, G_TYPE_TYPE_MODULE);
static void
gtk_theming_engine_class_init (GtkThemingEngineClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
klass->render_check = gtk_theming_engine_render_check;
klass->render_option = gtk_theming_engine_render_option;
klass->render_arrow = gtk_theming_engine_render_arrow;
klass->render_background = gtk_theming_engine_render_background;
klass->render_frame = gtk_theming_engine_render_frame;
klass->render_expander = gtk_theming_engine_render_expander;
klass->render_focus = gtk_theming_engine_render_focus;
klass->render_layout = gtk_theming_engine_render_layout;
klass->render_line = gtk_theming_engine_render_line;
klass->render_slider = gtk_theming_engine_render_slider;
klass->render_frame_gap = gtk_theming_engine_render_frame_gap;
klass->render_extension = gtk_theming_engine_render_extension;
klass->render_handle = gtk_theming_engine_render_handle;
g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate));
}
static void
gtk_theming_engine_init (GtkThemingEngine *engine)
{
engine->priv = GTK_THEMING_ENGINE_GET_PRIVATE (engine);
}
void
_gtk_theming_engine_set_context (GtkThemingEngine *engine,
GtkStyleContext *context)
{
GtkThemingEnginePrivate *priv;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
priv = engine->priv;
priv->context = context;
}
void
gtk_theming_engine_register_property (GtkThemingEngine *engine,
const gchar *property_name,
GType type,
const GValue *default_value,
GtkStylePropertyParser parse_func)
{
gchar *name;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
g_return_if_fail (property_name != NULL);
g_return_if_fail (type != G_TYPE_INVALID);
g_return_if_fail (default_value != NULL && G_IS_VALUE (default_value));
name = g_strdup_printf ("-%s-%s", G_OBJECT_TYPE_NAME (engine), property_name);
gtk_style_set_register_property (name, type, default_value, parse_func);
g_free (name);
}
void
gtk_theming_engine_get_property (GtkThemingEngine *engine,
const gchar *property,
GtkStateFlags state,
GValue *value)
{
GtkThemingEnginePrivate *priv;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
g_return_if_fail (property != NULL);
g_return_if_fail (value != NULL);
priv = engine->priv;
gtk_style_context_get_property (priv->context, property, state, value);
}
void
gtk_theming_engine_get_valist (GtkThemingEngine *engine,
GtkStateFlags state,
va_list args)
{
GtkThemingEnginePrivate *priv;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
priv = engine->priv;
gtk_style_context_get_valist (priv->context, state, args);
}
void
gtk_theming_engine_get (GtkThemingEngine *engine,
GtkStateFlags state,
...)
{
GtkThemingEnginePrivate *priv;
va_list args;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
priv = engine->priv;
va_start (args, state);
gtk_style_context_get_valist (priv->context, state, args);
va_end (args);
}
void
gtk_theming_engine_get_style_property (GtkThemingEngine *engine,
const gchar *property_name,
GValue *value)
{
GtkThemingEnginePrivate *priv;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
g_return_if_fail (property_name != NULL);
priv = engine->priv;
gtk_style_context_get_style_property (priv->context, property_name, value);
}
void
gtk_theming_engine_get_style_valist (GtkThemingEngine *engine,
va_list args)
{
GtkThemingEnginePrivate *priv;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
priv = engine->priv;
gtk_style_context_get_style_valist (priv->context, args);
}
void
gtk_theming_engine_get_style (GtkThemingEngine *engine,
...)
{
GtkThemingEnginePrivate *priv;
va_list args;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
priv = engine->priv;
va_start (args, engine);
gtk_style_context_get_style_valist (priv->context, args);
va_end (args);
}
GtkStateFlags
gtk_theming_engine_get_state (GtkThemingEngine *engine)
{
GtkThemingEnginePrivate *priv;
g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
priv = engine->priv;
return gtk_style_context_get_state (priv->context);
}
gboolean
gtk_theming_engine_is_state_set (GtkThemingEngine *engine,
GtkStateType state,
gdouble *progress)
{
GtkThemingEnginePrivate *priv;
g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
priv = engine->priv;
return gtk_style_context_is_state_set (priv->context, state, progress);
}
G_CONST_RETURN GtkWidgetPath *
gtk_theming_engine_get_path (GtkThemingEngine *engine)
{
GtkThemingEnginePrivate *priv;
g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
priv = engine->priv;
return gtk_style_context_get_path (priv->context);
}
gboolean
gtk_theming_engine_has_class (GtkThemingEngine *engine,
const gchar *style_class)
{
GtkThemingEnginePrivate *priv;
g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
priv = engine->priv;
return gtk_style_context_has_class (priv->context, style_class);
}
gboolean
gtk_theming_engine_has_region (GtkThemingEngine *engine,
const gchar *style_class,
GtkRegionFlags *flags)
{
GtkThemingEnginePrivate *priv;
if (flags)
*flags = 0;
g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
priv = engine->priv;
return gtk_style_context_has_region (priv->context, style_class, flags);
}
GtkTextDirection
gtk_theming_engine_get_direction (GtkThemingEngine *engine)
{
GtkThemingEnginePrivate *priv;
g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), GTK_TEXT_DIR_LTR);
priv = engine->priv;
return gtk_style_context_get_direction (priv->context);
}
GtkJunctionSides
gtk_theming_engine_get_junction_sides (GtkThemingEngine *engine)
{
GtkThemingEnginePrivate *priv;
g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
priv = engine->priv;
return gtk_style_context_get_junction_sides (priv->context);
}
/* GtkThemingModule */
static gboolean
gtk_theming_module_load (GTypeModule *type_module)
{
GtkThemingModule *theming_module;
GModule *module;
gchar *name, *module_path;
theming_module = GTK_THEMING_MODULE (type_module);
name = theming_module->name;
module_path = _gtk_find_module (name, "theming-engines");
if (!module_path)
{
g_warning (_("Unable to locate theme engine in module path: \"%s\","), name);
return FALSE;
}
module = g_module_open (module_path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
g_free (module_path);
if (!module)
{
g_warning ("%s", g_module_error ());
return FALSE;
}
if (!g_module_symbol (module, "create_engine",
(gpointer *) &theming_module->create_engine))
{
g_warning ("%s", g_module_error());
g_module_close (module);
return FALSE;
}
g_module_make_resident (module);
return TRUE;
}
static void
gtk_theming_module_class_init (GtkThemingModuleClass *klass)
{
GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (klass);
module_class->load = gtk_theming_module_load;
}
static void
gtk_theming_module_init (GtkThemingModule *module)
{
}
GtkThemingEngine *
gtk_theming_engine_load (const gchar *name)
{
static GHashTable *engines = NULL;
static GtkThemingEngine *default_engine;
GtkThemingEngine *engine = NULL;
if (name)
{
if (!engines)
engines = g_hash_table_new (g_str_hash, g_str_equal);
engine = g_hash_table_lookup (engines, name);
if (!engine)
{
GtkThemingModule *module;
module = g_object_new (GTK_TYPE_THEMING_MODULE, NULL);
g_type_module_set_name (G_TYPE_MODULE (module), name);
module->name = g_strdup (name);
if (module && g_type_module_use (G_TYPE_MODULE (module)))
{
engine = (module->create_engine) ();
if (engine)
g_hash_table_insert (engines, module->name, engine);
}
}
}
if (!engine)
{
if (G_UNLIKELY (!default_engine))
default_engine = g_object_new (GTK_TYPE_THEMING_ENGINE, NULL);
engine = default_engine;
}
return engine;
}
GdkScreen *
gtk_theming_engine_get_screen (GtkThemingEngine *engine)
{
GtkThemingEnginePrivate *priv;
g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
priv = engine->priv;
return gtk_style_context_get_screen (priv->context);
}
/* Paint method implementations */
static void
gtk_theming_engine_render_check (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GdkColor *fg_color, *base_color, *text_color;
const GtkWidgetPath *path;
GtkStateFlags flags;
gint exterior_size, interior_size, thickness, pad;
flags = gtk_theming_engine_get_state (engine);
path = gtk_theming_engine_get_path (engine);
cairo_save (cr);
gtk_theming_engine_get (engine, flags,
"foreground-color", &fg_color,
"base-color", &base_color,
"text-color", &text_color,
NULL);
exterior_size = MIN (width, height);
if (exterior_size % 2 == 0) /* Ensure odd */
exterior_size -= 1;
/* FIXME: thickness */
thickness = 1;
pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
interior_size = MAX (1, exterior_size - 2 * pad);
if (interior_size < 7)
{
interior_size = 7;
pad = MAX (0, (exterior_size - interior_size) / 2);
}
x -= (1 + exterior_size - (gint) width) / 2;
y -= (1 + exterior_size - (gint) height) / 2;
if (!gtk_theming_engine_has_class (engine, "menu"))
{
cairo_set_line_width (cr, 1.0);
cairo_rectangle (cr, x + 0.5, y + 0.5, exterior_size - 1, exterior_size - 1);
gdk_cairo_set_source_color (cr, base_color);
cairo_fill_preserve (cr);
if (gtk_theming_engine_has_class (engine, "cell"))
gdk_cairo_set_source_color (cr, text_color);
else
gdk_cairo_set_source_color (cr, fg_color);
cairo_stroke (cr);
}
if (gtk_theming_engine_has_class (engine, "menu"))
gdk_cairo_set_source_color (cr, fg_color);
else
gdk_cairo_set_source_color (cr, text_color);
if (gtk_theming_engine_is_state_set (engine, GTK_STATE_INCONSISTENT, NULL))
{
int line_thickness = MAX (1, (3 + interior_size * 2) / 7);
cairo_rectangle (cr,
x + pad,
y + pad + (1 + interior_size - line_thickness) / 2,
interior_size,
line_thickness);
cairo_fill (cr);
}
else
{
gdouble progress;
gboolean active;
active = gtk_theming_engine_is_state_set (engine, GTK_STATE_ACTIVE, &progress);
if (active || progress > 0)
{
cairo_translate (cr,
x + pad, y + pad);
cairo_scale (cr, interior_size / 7., interior_size / 7.);
cairo_rectangle (cr, 0, 0, 7 * progress, 7);
cairo_clip (cr);
cairo_move_to (cr, 7.0, 0.0);
cairo_line_to (cr, 7.5, 1.0);
cairo_curve_to (cr, 5.3, 2.0,
4.3, 4.0,
3.5, 7.0);
cairo_curve_to (cr, 3.0, 5.7,
1.3, 4.7,
0.0, 4.7);
cairo_line_to (cr, 0.2, 3.5);
cairo_curve_to (cr, 1.1, 3.5,
2.3, 4.3,
3.0, 5.0);
cairo_curve_to (cr, 1.0, 3.9,
2.4, 4.1,
3.2, 4.9);
cairo_curve_to (cr, 3.5, 3.1,
5.2, 2.0,
7.0, 0.0);
cairo_fill (cr);
}
}
cairo_restore (cr);
gdk_color_free (fg_color);
gdk_color_free (base_color);
gdk_color_free (text_color);
}
static void
gtk_theming_engine_render_option (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GtkStateFlags flags;
GdkColor *base_color, *fg_color, *text_color;
const GtkWidgetPath *path;
gint exterior_size, interior_size, pad, thickness;
gdouble radius;
flags = gtk_theming_engine_get_state (engine);
path = gtk_theming_engine_get_path (engine);
radius = MIN (width, height) / 2 - 0.5;
cairo_save (cr);
gtk_theming_engine_get (engine, flags,
"foreground-color", &fg_color,
"base-color", &base_color,
"text-color", &text_color,
NULL);
exterior_size = MIN (width, height);
if (exterior_size % 2 == 0) /* Ensure odd */
exterior_size -= 1;
x -= (1 + exterior_size - width) / 2;
y -= (1 + exterior_size - height) / 2;
if (!gtk_theming_engine_has_class (engine, "menu"))
{
gdk_cairo_set_source_color (cr, base_color);
cairo_arc (cr,
x + exterior_size / 2.,
y + exterior_size / 2.,
(exterior_size - 1) / 2.,
0, 2 * G_PI);
cairo_fill_preserve (cr);
if (gtk_theming_engine_has_class (engine, "cell"))
gdk_cairo_set_source_color (cr, text_color);
else
gdk_cairo_set_source_color (cr, fg_color);
cairo_set_line_width (cr, 1.);
cairo_stroke (cr);
}
if (gtk_theming_engine_has_class (engine, "menu"))
gdk_cairo_set_source_color (cr, fg_color);
else
gdk_cairo_set_source_color (cr, text_color);
/* FIXME: thickness */
thickness = 1;
if (gtk_theming_engine_is_state_set (engine, GTK_STATE_INCONSISTENT, NULL))
{
gint line_thickness;
pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
interior_size = MAX (1, exterior_size - 2 * pad);
if (interior_size < 7)
{
interior_size = 7;
pad = MAX (0, (exterior_size - interior_size) / 2);
}
line_thickness = MAX (1, (3 + interior_size * 2) / 7);
cairo_rectangle (cr,
x + pad,
y + pad + (interior_size - line_thickness) / 2.,
interior_size,
line_thickness);
cairo_fill (cr);
}
if (gtk_theming_engine_is_state_set (engine, GTK_STATE_ACTIVE, NULL))
{
pad = thickness + MAX (1, 2 * (exterior_size - 2 * thickness) / 9);
interior_size = MAX (1, exterior_size - 2 * pad);
if (interior_size < 5)
{
interior_size = 7;
pad = MAX (0, (exterior_size - interior_size) / 2);
}
cairo_arc (cr,
x + pad + interior_size / 2.,
y + pad + interior_size / 2.,
interior_size / 2.,
0, 2 * G_PI);
cairo_fill (cr);
}
cairo_restore (cr);
gdk_color_free (fg_color);
gdk_color_free (base_color);
gdk_color_free (text_color);
}
static void
add_path_arrow (cairo_t *cr,
gdouble angle,
gdouble x,
gdouble y,
gdouble size)
{
cairo_save (cr);
cairo_translate (cr, x + (size / 2), y + (size / 2));
cairo_rotate (cr, angle);
cairo_move_to (cr, 0, - (size / 4));
cairo_line_to (cr, - (size / 2), (size / 4));
cairo_line_to (cr, (size / 2), (size / 4));
cairo_close_path (cr);
cairo_restore (cr);
}
static void
gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
cairo_t *cr,
gdouble angle,
gdouble x,
gdouble y,
gdouble size)
{
GtkStateFlags flags;
GdkColor *fg_color;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
gtk_theming_engine_get (engine, flags,
"foreground-color", &fg_color,
NULL);
if (flags & GTK_STATE_FLAG_INSENSITIVE)
{
add_path_arrow (cr, angle, x + 1, y + 1, size);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_fill (cr);
}
add_path_arrow (cr, angle, x, y, size);
gdk_cairo_set_source_color (cr, fg_color);
cairo_fill (cr);
cairo_restore (cr);
gdk_color_free (fg_color);
}
static void
add_path_line (cairo_t *cr,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2)
{
/* Adjust endpoints */
if (y1 == y2)
{
y1 += 0.5;
y2 += 0.5;
x2 += 1;
}
else if (x1 == x2)
{
x1 += 0.5;
x2 += 0.5;
y2 += 1;
}
cairo_move_to (cr, x1, y1);
cairo_line_to (cr, x2, y2);
}
static void
add_path_rectangle_sides (cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
guint sides)
{
if (sides & SIDE_TOP)
{
cairo_move_to (cr, x, y + 0.5);
cairo_line_to (cr, x + width, y + 0.5);
}
if (sides & SIDE_RIGHT)
{
cairo_move_to (cr, x + width - 0.5, y);
cairo_line_to (cr, x + width - 0.5, y + height);
}
if (sides & SIDE_BOTTOM)
{
cairo_move_to (cr, x, y + height - 0.5);
cairo_line_to (cr, x + width, y + height - 0.5);
}
if (sides & SIDE_LEFT)
{
cairo_move_to (cr, x + 0.5, y + height);
cairo_line_to (cr, x + 0.5, y);
}
}
static void
add_path_gap_side (cairo_t *cr,
GtkPositionType gap_side,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
gdouble xy0_gap,
gdouble xy1_gap)
{
switch (gap_side)
{
case GTK_POS_TOP:
add_path_line (cr, x, y, x + xy0_gap, y);
add_path_line (cr, x + xy1_gap, y, x + width, y);
break;
case GTK_POS_BOTTOM:
add_path_line (cr, x, y + height, x + xy0_gap, y + height);
add_path_line (cr, x + xy1_gap, y + height, x + width, y + height);
break;
case GTK_POS_LEFT:
add_path_line (cr, x, y, x, y + xy0_gap);
add_path_line (cr, x, y + xy1_gap, x, y + height);
break;
case GTK_POS_RIGHT:
add_path_line (cr, x + width, y, x + width, y + xy0_gap);
add_path_line (cr, x + width, y + xy1_gap, x + width, y + height);
break;
}
}
static void
color_shade (const GdkColor *color,
gdouble factor,
GdkColor *color_return)
{
color_return->red = CLAMP (color->red * factor, 0, 65535);
color_return->green = CLAMP (color->green * factor, 0, 65535);
color_return->blue = CLAMP (color->blue * factor, 0, 65535);
}
static void
gtk_theming_engine_render_background (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GdkColor *bg_color, *base_color;
cairo_pattern_t *pattern;
GtkStateFlags flags;
gboolean prelight;
gdouble progress, alpha = 1;
flags = gtk_theming_engine_get_state (engine);
cairo_save (cr);
if (gtk_theming_engine_has_class (engine, "spinbutton") &&
gtk_theming_engine_has_class (engine, "button"))
{
x += 2;
y += 2;
width -= 4;
height -= 4;
}
gtk_theming_engine_get (engine, flags,
"background-image", &pattern,
"background-color", &bg_color,
"base-color", &base_color,
NULL);
prelight = gtk_theming_engine_is_state_set (engine, GTK_STATE_PRELIGHT, &progress);
cairo_translate (cr, x, y);
cairo_scale (cr, width, height);
if (prelight || progress > 0 )
{
cairo_pattern_t *other_pattern;
GtkStateFlags other_flags;
GdkColor *other_bg, *other_base;
cairo_pattern_t *new_pattern = NULL;
if (prelight)
{
other_flags = flags & ~(GTK_STATE_FLAG_PRELIGHT);
progress = 1 - progress;
}
else
other_flags = flags | GTK_STATE_FLAG_PRELIGHT;
gtk_theming_engine_get (engine, other_flags,
"background-image", &other_pattern,
"background-color", &other_bg,
"base-color", &other_base,
NULL);
if (pattern && other_pattern)
{
cairo_pattern_type_t type, other_type;
gint n0, n1;
cairo_pattern_get_color_stop_count (pattern, &n0);
cairo_pattern_get_color_stop_count (other_pattern, &n1);
type = cairo_pattern_get_type (pattern);
other_type = cairo_pattern_get_type (other_pattern);
if (type == other_type && n0 == n1)
{
gdouble offset0, red0, green0, blue0, alpha0;
gdouble offset1, red1, green1, blue1, alpha1;
gdouble x00, x01, y00, y01, x10, x11, y10, y11;
gdouble r00, r01, r10, r11;
guint i;
if (type == CAIRO_PATTERN_TYPE_LINEAR)
{
cairo_pattern_get_linear_points (pattern, &x00, &y00, &x01, &y01);
cairo_pattern_get_linear_points (other_pattern, &x10, &y10, &x11, &y11);
new_pattern = cairo_pattern_create_linear (x00 + (x10 - x00) * progress,
y00 + (y10 - y00) * progress,
x01 + (x11 - x01) * progress,
y01 + (y11 - y01) * progress);
}
else
{
cairo_pattern_get_radial_circles (pattern, &x00, &y00, &r00, &x01, &y01, &r01);
cairo_pattern_get_radial_circles (other_pattern, &x10, &y10, &r10, &x11, &y11, &r11);
new_pattern = cairo_pattern_create_radial (x00 + (x10 - x00) * progress,
y00 + (y10 - y00) * progress,
r00 + (r10 - r00) * progress,
x01 + (x11 - x01) * progress,
y01 + (y11 - y01) * progress,
r01 + (r11 - r01) * progress);
}
cairo_pattern_set_filter (new_pattern, CAIRO_FILTER_FAST);
i = 0;
/* Blend both gradients into one */
while (i < n0 && i < n1)
{
cairo_pattern_get_color_stop_rgba (pattern, i,
&offset0,
&red0, &green0, &blue0,
&alpha0);
cairo_pattern_get_color_stop_rgba (other_pattern, i,
&offset1,
&red1, &green1, &blue1,
&alpha1);
cairo_pattern_add_color_stop_rgba (new_pattern,
offset0 + ((offset1 - offset0) * progress),
red0 + ((red1 - red0) * progress),
green0 + ((green1 - green0) * progress),
blue0 + ((blue1 - blue0) * progress),
alpha0 + ((alpha1 - alpha0) * progress));
i++;
}
}
else
{
/* Different pattern types, or different color
* stop counts, alpha blend both patterns.
*/
cairo_rectangle (cr, 0, 0, 1, 1);
cairo_set_source (cr, other_pattern);
cairo_fill (cr);
/* Set alpha for posterior drawing
* of the target pattern
*/
alpha = 1 - progress;
}
}
else if (pattern || other_pattern)
{
cairo_pattern_t *p;
GdkColor *c;
gdouble x0, y0, x1, y1, r0, r1;
gdouble red0, green0, blue0;
gdouble red1, green1, blue1;
gint n, i;
/* Blend a pattern with a color */
if (pattern)
{
p = pattern;
c = gtk_theming_engine_has_class (engine, "entry") ? other_base : other_bg;
progress = 1 - progress;
}
else
{
p = other_pattern;
c = gtk_theming_engine_has_class (engine, "entry") ? base_color : bg_color;
}
if (cairo_pattern_get_type (p) == CAIRO_PATTERN_TYPE_LINEAR)
{
cairo_pattern_get_linear_points (p, &x0, &y0, &x1, &y1);
new_pattern = cairo_pattern_create_linear (x0, y0, x1, y1);
}
else
{
cairo_pattern_get_radial_circles (p, &x0, &y0, &r0, &x1, &y1, &r1);
new_pattern = cairo_pattern_create_radial (x0, y0, r0, x1, y1, r1);
}
cairo_pattern_get_color_stop_count (p, &n);
red0 = c->red / 65535.;
green0 = c->green / 65535.;
blue0 = c->blue / 65535.;
for (i = 0; i < n; i++)
{
gdouble offset, alpha;
cairo_pattern_get_color_stop_rgba (p, i,
&offset,
&red1, &green1, &blue1,
&alpha);
cairo_pattern_add_color_stop_rgba (new_pattern, offset,
red0 + ((red1 - red0) * progress),
green0 + ((green1 - green0) * progress),
blue0 + ((blue1 - blue0) * progress),
alpha + ((1 - alpha) * progress));
}
}
else
{
const GdkColor *color, *other_color;
/* Merge just colors */
if (gtk_theming_engine_has_class (engine, "entry"))
{
color = base_color;
other_color = other_base;
}
else
{
color = bg_color;
other_color = other_bg;
}
new_pattern = cairo_pattern_create_rgb ((gdouble) (color->red + ((other_color->red - color->red) * progress)) / 65535.,
(gdouble) (color->green + ((other_color->green - color->green) * progress)) / 65535.,
(gdouble) (color->blue + ((other_color->blue - color->blue) * progress)) / 65535.);
}
if (new_pattern)
{
/* Replace pattern to use */
cairo_pattern_destroy (pattern);
pattern = new_pattern;
}
if (other_pattern)
cairo_pattern_destroy (other_pattern);
if (other_bg)
gdk_color_free (other_bg);
if (other_base)
gdk_color_free (other_base);
}
cairo_rectangle (cr, 0, 0, 1, 1);
if (pattern)
{
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
}
else
{
if (gtk_theming_engine_has_class (engine, "entry"))
gdk_cairo_set_source_color (cr, base_color);
else
gdk_cairo_set_source_color (cr, bg_color);
}
if (gtk_theming_engine_has_class (engine, "tooltip"))
{
cairo_fill_preserve (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_stroke (cr);
}
else
{
if (alpha == 1)
cairo_fill (cr);
else
{
cairo_pattern_t *mask;
mask = cairo_pattern_create_rgba (1, 1, 1, alpha);
cairo_mask (cr, mask);
cairo_pattern_destroy (mask);
}
}
cairo_restore (cr);
gdk_color_free (base_color);
gdk_color_free (bg_color);
}
static void
gtk_theming_engine_render_frame (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GtkStateFlags flags;
GdkColor lighter, darker;
GdkColor *bg_color;
Gtk9Slice *slice;
flags = gtk_theming_engine_get_state (engine);
gtk_theming_engine_get (engine, flags,
"border-image", &slice,
"background-color", &bg_color,
NULL);
if (slice)
{
gtk_9slice_render (slice, cr, x, y, width, height);
gtk_9slice_unref (slice);
gdk_color_free (bg_color);
return;
}
cairo_save (cr);
cairo_set_line_width (cr, 1);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
if (gtk_theming_engine_has_class (engine, "entry") ||
gtk_theming_engine_has_class (engine, "scrolled-window") ||
gtk_theming_engine_has_class (engine, "viewport"))
{
gdk_cairo_set_source_color (cr, bg_color);
add_path_rectangle_sides (cr, x + 1, y + 1, width - 2, height - 2,
SIDE_BOTTOM | SIDE_RIGHT);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_rectangle_sides (cr, x + 1, y + 1, width - 2, height - 2,
SIDE_TOP | SIDE_LEFT);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 1, 1, 1);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_BOTTOM | SIDE_RIGHT);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_TOP | SIDE_LEFT);
cairo_stroke (cr);
}
else if (gtk_theming_engine_has_class (engine, "button") &&
gtk_theming_engine_has_class (engine, "default"))
{
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_rectangle (cr, x + 0.5, x + 0.5, width - 1, height - 1);
cairo_stroke (cr);
}
else if (gtk_theming_engine_has_class (engine, "scrollbar") &&
gtk_theming_engine_has_class (engine, "trough"))
{
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_TOP | SIDE_LEFT);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_BOTTOM | SIDE_RIGHT);
cairo_stroke (cr);
}
else if (gtk_theming_engine_has_class (engine, "spinbutton"))
{
if (gtk_theming_engine_has_class (engine, "button"))
{
GtkJunctionSides sides;
sides = gtk_theming_engine_get_junction_sides (engine);
if (sides & GTK_JUNCTION_BOTTOM)
y += 2;
width -= 3;
height -= 2;
if (gtk_theming_engine_get_direction (engine) == GTK_TEXT_DIR_RTL)
x += 2;
else
x += 1;
gdk_cairo_set_source_color (cr, &lighter);
add_path_rectangle_sides (cr, x, y, width, height, SIDE_TOP);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x, y, width, height, SIDE_BOTTOM);
cairo_stroke (cr);
}
else
{
gdk_cairo_set_source_color (cr, &lighter);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_BOTTOM | SIDE_RIGHT);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x, y, width, height, SIDE_TOP);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, bg_color);
add_path_rectangle_sides (cr, x, y, width - 1, height - 1, SIDE_BOTTOM);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_rectangle_sides (cr, x, y + 1, width - 1, height - 3,
SIDE_TOP | SIDE_LEFT | SIDE_RIGHT);
cairo_stroke (cr);
}
}
else
{
if (flags & GTK_STATE_FLAG_ACTIVE)
{
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_rectangle_sides (cr, x + 1, y + 1, width - 2, height - 2,
SIDE_TOP | SIDE_LEFT);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_BOTTOM | SIDE_RIGHT);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_TOP | SIDE_LEFT);
cairo_stroke (cr);
}
else
{
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x, y, width - 1, height - 1,
SIDE_BOTTOM | SIDE_RIGHT);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_TOP | SIDE_LEFT);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_rectangle_sides (cr, x, y, width, height,
SIDE_BOTTOM | SIDE_RIGHT);
cairo_stroke (cr);
}
}
cairo_restore (cr);
gdk_color_free (bg_color);
}
static void
gtk_theming_engine_render_expander (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GtkStateFlags flags;
GdkColor *bg_color, *fg_color, *base_color;
double vertical_overshoot;
int diameter;
double radius;
double interp; /* interpolation factor for center position */
double x_double_horz, y_double_horz;
double x_double_vert, y_double_vert;
double x_double, y_double;
gdouble angle;
gint line_width;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
gtk_theming_engine_get (engine, flags,
"foreground-color", &fg_color,
"background-color", &bg_color,
"base-color", &base_color,
NULL);
line_width = 1;
/* FIXME: LTR/RTL */
if (flags & GTK_STATE_FLAG_ACTIVE)
{
angle = G_PI / 2;
interp = 1.0;
}
else
{
angle = 0;
interp = 0;
}
/* Compute distance that the stroke extends beyonds the end
* of the triangle we draw.
*/
vertical_overshoot = line_width / 2.0 * (1. / tan (G_PI / 8));
/* For odd line widths, we end the vertical line of the triangle
* at a half pixel, so we round differently.
*/
if (line_width % 2 == 1)
vertical_overshoot = ceil (0.5 + vertical_overshoot) - 0.5;
else
vertical_overshoot = ceil (vertical_overshoot);
/* Adjust the size of the triangle we draw so that the entire stroke fits
*/
diameter = (gint) MAX (3, width - 2 * vertical_overshoot);
/* If the line width is odd, we want the diameter to be even,
* and vice versa, so force the sum to be odd. This relationship
* makes the point of the triangle look right.
*/
diameter -= (1 - (diameter + line_width) % 2);
radius = diameter / 2.;
/* Adjust the center so that the stroke is properly aligned with
* the pixel grid. The center adjustment is different for the
* horizontal and vertical orientations. For intermediate positions
* we interpolate between the two.
*/
x_double_vert = floor ((x + width / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
y_double_vert = (y + height / 2) - 0.5;
x_double_horz = (x + width / 2) - 0.5;
y_double_horz = floor ((y + height / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
x_double = x_double_vert * (1 - interp) + x_double_horz * interp;
y_double = y_double_vert * (1 - interp) + y_double_horz * interp;
cairo_translate (cr, x_double, y_double);
cairo_rotate (cr, angle);
cairo_move_to (cr, - radius / 2., - radius);
cairo_line_to (cr, radius / 2., 0);
cairo_line_to (cr, - radius / 2., radius);
cairo_close_path (cr);
cairo_set_line_width (cr, line_width);
if (flags & GTK_STATE_FLAG_PRELIGHT)
gdk_cairo_set_source_color (cr, fg_color);
else
gdk_cairo_set_source_color (cr, base_color);
cairo_fill_preserve (cr);
gdk_cairo_set_source_color (cr, fg_color);
cairo_stroke (cr);
cairo_restore (cr);
gdk_color_free (base_color);
gdk_color_free (fg_color);
gdk_color_free (bg_color);
}
static void
gtk_theming_engine_render_focus (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GtkStateFlags flags;
GdkColor *color;
gint line_width;
gint8 *dash_list;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
gtk_theming_engine_get (engine, flags,
"foreground-color", &color,
NULL);
gtk_theming_engine_get_style (engine,
"focus-line-width", &line_width,
"focus-line-pattern", (gchar *) &dash_list,
NULL);
cairo_set_line_width (cr, (gdouble) line_width);
if (dash_list[0])
{
gint n_dashes = strlen ((const gchar *) dash_list);
gdouble *dashes = g_new (gdouble, n_dashes);
gdouble total_length = 0;
gdouble dash_offset;
gint i;
for (i = 0; i < n_dashes; i++)
{
dashes[i] = dash_list[i];
total_length += dash_list[i];
}
/* The dash offset here aligns the pattern to integer pixels
* by starting the dash at the right side of the left border
* Negative dash offsets in cairo don't work
* (https://bugs.freedesktop.org/show_bug.cgi?id=2729)
*/
dash_offset = - line_width / 2.;
while (dash_offset < 0)
dash_offset += total_length;
cairo_set_dash (cr, dashes, n_dashes, dash_offset);
g_free (dashes);
}
cairo_rectangle (cr,
x + line_width / 2.,
y + line_width / 2.,
width - line_width,
height - line_width);
gdk_cairo_set_source_color (cr, color);
cairo_stroke (cr);
cairo_restore (cr);
gdk_color_free (color);
g_free (dash_list);
}
static void
gtk_theming_engine_render_line (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x0,
gdouble y0,
gdouble x1,
gdouble y1)
{
GdkColor *bg_color, darker, lighter;
GtkStateFlags flags;
gint i, thickness, thickness_dark, thickness_light, len;
cairo_matrix_t matrix;
gdouble angle;
/* FIXME: thickness */
thickness = 2;
thickness_dark = thickness / 2;
thickness_light = thickness - thickness_dark;
flags = gtk_theming_engine_get_state (engine);
cairo_save (cr);
gtk_theming_engine_get (engine, flags,
"background-color", &bg_color,
NULL);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_set_line_width (cr, 1);
angle = atan2 (x1 - x0, y1 - y0);
angle = (2 * G_PI) - angle;
angle += G_PI / 2;
cairo_get_matrix (cr, &matrix);
cairo_matrix_translate (&matrix, x0, y0);
cairo_matrix_rotate (&matrix, angle);
cairo_set_matrix (cr, &matrix);
x1 -= x0;
y1 -= y0;
len = (gint) sqrt ((x1 * x1) + (y1 * y1));
y0 = -thickness_dark;
for (i = 0; i < thickness_dark; i++)
{
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, len - i - 1.5, y0, len - 0.5, y0);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, 0.5, y0, len - i - 1.5, y0);
cairo_stroke (cr);
y0++;
}
for (i = 0; i < thickness_light; i++)
{
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, 0.5, y0, thickness_light - i + 0.5, y0);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, thickness_light - i + 0.5, y0, len - 0.5, y0);
cairo_stroke (cr);
y0++;
}
cairo_restore (cr);
gdk_color_free (bg_color);
}
static void
gtk_theming_engine_render_layout (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
PangoLayout *layout)
{
const PangoMatrix *matrix;
GdkColor *fg_color;
GtkStateFlags flags;
GdkScreen *screen;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
gtk_theming_engine_get (engine, flags,
"foreground-color", &fg_color,
NULL);
screen = gtk_theming_engine_get_screen (engine);
matrix = pango_context_get_matrix (pango_layout_get_context (layout));
if (matrix)
{
cairo_matrix_t cairo_matrix;
PangoMatrix tmp_matrix;
PangoRectangle rect;
cairo_matrix_init (&cairo_matrix,
matrix->xx, matrix->yx,
matrix->xy, matrix->yy,
matrix->x0, matrix->y0);
pango_layout_get_extents (layout, NULL, &rect);
pango_matrix_transform_rectangle (matrix, &rect);
pango_extents_to_pixels (&rect, NULL);
tmp_matrix = *matrix;
cairo_matrix.x0 += x - rect.x;
cairo_matrix.y0 += y - rect.y;
cairo_set_matrix (cr, &cairo_matrix);
}
else
cairo_translate (cr, x, y);
if (gtk_theming_engine_is_state_set (engine, GTK_STATE_INSENSITIVE, NULL))
{
cairo_save (cr);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_move_to (cr, 1, 1);
_gtk_pango_fill_layout (cr, layout);
cairo_restore (cr);
}
gdk_cairo_set_source_color (cr, fg_color);
pango_cairo_show_layout (cr, layout);
cairo_restore (cr);
gdk_color_free (fg_color);
}
static void
gtk_theming_engine_render_slider (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkOrientation orientation)
{
const GtkWidgetPath *path;
gint thickness;
path = gtk_theming_engine_get_path (engine);
gtk_theming_engine_render_background (engine, cr, x, y, width, height);
gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
/* FIXME: thickness */
thickness = 2;
if (gtk_widget_path_is_type (path, GTK_TYPE_SCALE))
{
if (orientation == GTK_ORIENTATION_VERTICAL)
gtk_theming_engine_render_line (engine, cr,
x + thickness,
y + (gint) height / 2,
x + width - thickness - 1,
y + (gint) height / 2);
else
gtk_theming_engine_render_line (engine, cr,
x + (gint) width / 2,
y + thickness,
x + (gint) width / 2,
y + height - thickness - 1);
}
}
static void
gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkPositionType gap_side,
gdouble xy0_gap,
gdouble xy1_gap)
{
GtkStateFlags flags;
GdkColor *bg_color;
GdkColor lighter, darker;
guint sides;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
cairo_set_line_width (cr, 1);
gtk_theming_engine_get (engine, flags,
"background-color", &bg_color,
NULL);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
if (gtk_theming_engine_has_class (engine, "frame"))
{
if (gap_side == GTK_POS_RIGHT)
sides = SIDE_BOTTOM;
else if (gap_side == GTK_POS_BOTTOM)
sides = SIDE_RIGHT;
else
sides = SIDE_BOTTOM | SIDE_RIGHT;
gdk_cairo_set_source_color (cr, &lighter);
add_path_rectangle_sides (cr, x , y, width , height, sides);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x, y, width - 1, height - 1, sides);
cairo_stroke (cr);
if (gap_side == GTK_POS_RIGHT ||
gap_side == GTK_POS_BOTTOM)
{
gdk_cairo_set_source_color (cr, &darker);
add_path_gap_side (cr, gap_side,
x + 1, y + 1, width - 4, height - 4,
xy0_gap, xy1_gap);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_gap_side (cr, gap_side,
x, y, width, height,
xy0_gap, xy1_gap);
cairo_stroke (cr);
}
if (gap_side == GTK_POS_LEFT)
sides = SIDE_TOP;
else if (gap_side == GTK_POS_TOP)
sides = SIDE_LEFT;
else
sides = SIDE_TOP | SIDE_LEFT;
gdk_cairo_set_source_color (cr, &lighter);
add_path_rectangle_sides (cr, x + 1, y + 1, width - 2, height - 3, sides);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x, y, width - 1, height - 1, sides);
cairo_stroke (cr);
if (gap_side == GTK_POS_LEFT ||
gap_side == GTK_POS_TOP)
{
gdk_cairo_set_source_color (cr, &lighter);
add_path_gap_side (cr, gap_side,
x + 1, y + 1, width - 4, height - 4,
xy0_gap, xy1_gap);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_gap_side (cr, gap_side,
x, y, width - 2, height - 2,
xy0_gap, xy1_gap);
cairo_stroke (cr);
}
}
else
{
if (gap_side == GTK_POS_RIGHT)
sides = SIDE_BOTTOM;
else if (gap_side == GTK_POS_BOTTOM)
sides = SIDE_RIGHT;
else
sides = SIDE_BOTTOM | SIDE_RIGHT;
gdk_cairo_set_source_color (cr, &darker);
add_path_rectangle_sides (cr, x + 1, y, width - 2, height, sides);
add_path_rectangle_sides (cr, x, y + 1, width, height - 2, sides);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_rectangle_sides (cr, x, y, width, height, sides);
cairo_stroke (cr);
if (gap_side == GTK_POS_RIGHT ||
gap_side == GTK_POS_BOTTOM)
{
gdk_cairo_set_source_color (cr, &darker);
add_path_gap_side (cr, gap_side,
x, y, width - 2, height - 2,
xy0_gap, xy1_gap);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_gap_side (cr, gap_side,
x, y, width - 1, height - 1,
xy0_gap, xy1_gap);
cairo_stroke (cr);
}
if (gap_side == GTK_POS_LEFT)
sides = SIDE_TOP;
else if (gap_side == GTK_POS_TOP)
sides = SIDE_LEFT;
else
sides = SIDE_TOP | SIDE_LEFT;
gdk_cairo_set_source_color (cr, &lighter);
add_path_rectangle_sides (cr, x, y, width, height, sides);
cairo_stroke (cr);
if (gap_side == GTK_POS_LEFT ||
gap_side == GTK_POS_TOP)
{
add_path_gap_side (cr, gap_side,
x, y, width, height,
xy0_gap, xy1_gap);
cairo_stroke (cr);
}
}
cairo_restore (cr);
gdk_color_free (bg_color);
}
static void
gtk_theming_engine_render_extension (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkPositionType gap_side)
{
GtkStateFlags flags;
GdkColor *bg_color;
GdkColor lighter, darker;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
cairo_set_line_width (cr, 1);
gtk_theming_engine_get (engine, flags,
"background-color", &bg_color,
NULL);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
switch (gap_side)
{
case GTK_POS_TOP:
gdk_cairo_set_source_color (cr, bg_color);
cairo_rectangle (cr, x + 1, y, width - 2, height);
cairo_fill (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, x, y, x, y + height - 2);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, bg_color);
add_path_line (cr, x + 1, y, x + 1, y + height - 2);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x + 2, y + height - 2, x + width - 2, y + height - 2);
add_path_line (cr, x + width - 2, y, x + width - 2, y + height - 2);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_line (cr, x + 1, y + height - 1, x + width - 2, y + height - 1);
add_path_line (cr, x + width - 1, y, x + width - 1, y + height - 2);
cairo_stroke (cr);
break;
case GTK_POS_BOTTOM:
gdk_cairo_set_source_color (cr, bg_color);
cairo_rectangle (cr, x + 1, y, width - 2, height);
cairo_fill (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, x + 1, y, x + width - 2, y);
add_path_line (cr, x, y + 1, x, y + height - 1);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, bg_color);
add_path_line (cr, x + 1, y + 1, x + width - 2, y + 1);
add_path_line (cr, x + 1, y + 1, x + 1, y + height - 1);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x + width - 2, y + 2, x + width - 2, y + height - 1);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_line (cr, x + width - 1, y + 1, x + width - 1, y + height - 1);
cairo_stroke (cr);
break;
case GTK_POS_LEFT:
gdk_cairo_set_source_color (cr, bg_color);
cairo_rectangle (cr, x, y + 1, width, height - 2);
cairo_fill (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, x, y, x + width - 2, y);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, bg_color);
add_path_line (cr, x + 1, y + 1, x + width - 2, y + 1);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x, y + height - 2, x + width - 2, y + height - 2);
add_path_line (cr, x + width - 2, y + 2, x + width - 2, y + height - 2);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_line (cr, x, y + height - 1, x + width - 2, y + height - 1);
add_path_line (cr, x + width - 1, y + 1, x + width - 1, y + height - 2);
cairo_stroke (cr);
break;
case GTK_POS_RIGHT:
gdk_cairo_set_source_color (cr, bg_color);
cairo_rectangle (cr, x, y + 1, width, height - 2);
cairo_fill (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, x + 1, y, x + width - 1, y);
add_path_line (cr, x, y + 1, x, y + height - 2);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, bg_color);
add_path_line (cr, x + 1, y + 1, x + width - 1, y + 1);
add_path_line (cr, x + 1, y + 1, x + 1, y + height - 2);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x + 2, y + height - 2, x + width - 1, y + height - 2);
cairo_stroke (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
add_path_line (cr, x + 1, y + height - 1, x + width - 1, y + height - 1);
cairo_stroke (cr);
break;
}
cairo_restore (cr);
gdk_color_free (bg_color);
}
static void
render_dot (cairo_t *cr,
const GdkColor *lighter,
const GdkColor *darker,
gdouble x,
gdouble y,
gdouble size)
{
size = CLAMP ((gint) size, 2, 3);
if (size == 2)
{
gdk_cairo_set_source_color (cr, lighter);
cairo_rectangle (cr, x, y, 1, 1);
cairo_rectangle (cr, x + 1, y + 1, 1, 1);
cairo_fill (cr);
}
else if (size == 3)
{
gdk_cairo_set_source_color (cr, lighter);
cairo_rectangle (cr, x, y, 2, 1);
cairo_rectangle (cr, x, y, 1, 2);
cairo_fill (cr);
gdk_cairo_set_source_color (cr, darker);
cairo_rectangle (cr, x + 1, y + 1, 2, 1);
cairo_rectangle (cr, x + 2, y, 1, 2);
cairo_fill (cr);
}
}
static void
gtk_theming_engine_render_handle (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GtkStateFlags flags;
GdkColor *bg_color;
GdkColor lighter, darker;
gint xx, yy;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
cairo_set_line_width (cr, 1);
gtk_theming_engine_get (engine, flags,
"background-color", &bg_color,
NULL);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
gdk_cairo_set_source_color (cr, bg_color);
cairo_rectangle (cr, x, y, width, height);
cairo_fill (cr);
if (gtk_theming_engine_has_class (engine, "paned"))
{
if (width > height)
for (xx = x + width / 2 - 15; xx <= x + width / 2 + 15; xx += 5)
render_dot (cr, &lighter, &darker, xx, y + height / 2 - 1, 3);
else
for (yy = y + height / 2 - 15; yy <= y + height / 2 + 15; yy += 5)
render_dot (cr, &lighter, &darker, x + width / 2 - 1, yy, 3);
}
else
{
for (yy = y; yy < y + height; yy += 3)
for (xx = x; xx < x + width; xx += 6)
{
render_dot (cr, &lighter, &darker, xx, yy, 2);
render_dot (cr, &lighter, &darker, xx + 3, yy + 1, 2);
}
}
cairo_restore (cr);
gdk_color_free (bg_color);
}
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