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gtk2/gtk/gtkthemingengine.c
Carlos Garnacho 66d1cb8054 GtkStyleSet: Register GtkThemingEngine type. 
This has been also hooked up to the CSS provider, which parses the "engine"
value to load the corresponding module.
2010-12-04 15:37:11 +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 <gtk/gtk.h>
#include <gtk/gtkthemingengine.h>
#include <gtk/gtkstylecontext.h>
#include <gtk/gtkintl.h>
#include "gtkalias.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,
GtkOrientation orientation);
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_get_property (GtkThemingEngine *engine,
const gchar *property,
GtkStateType state,
GValue *value)
{
GtkThemingEnginePrivate *priv;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
g_return_if_fail (property != NULL);
g_return_if_fail (state < GTK_STATE_LAST);
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,
GtkStateType state,
va_list args)
{
GtkThemingEnginePrivate *priv;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
g_return_if_fail (state < GTK_STATE_LAST);
priv = engine->priv;
gtk_style_context_get_valist (priv->context, state, args);
}
void
gtk_theming_engine_get (GtkThemingEngine *engine,
GtkStateType state,
...)
{
GtkThemingEnginePrivate *priv;
va_list args;
g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
g_return_if_fail (state < GTK_STATE_LAST);
priv = engine->priv;
va_start (args, state);
gtk_style_context_get_valist (priv->context, state, 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)
{
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);
}
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_child_class (GtkThemingEngine *engine,
const gchar *style_class,
GtkChildClassFlags *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_child_class (priv->context, style_class, flags);
}
/* 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)
{
}
G_CONST_RETURN 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;
}
/* 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;
GtkStateType state;
flags = gtk_theming_engine_get_state (engine);
path = gtk_theming_engine_get_path (engine);
cairo_save (cr);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"foreground-color", &fg_color,
"base-color", &base_color,
"text-color", &text_color,
NULL);
if (!gtk_widget_path_has_parent (path, GTK_TYPE_MENU))
{
cairo_set_line_width (cr, 1);
cairo_rectangle (cr,
x + 0.5, y + 0.5,
width - 1, height - 1);
gdk_cairo_set_source_color (cr, base_color);
cairo_fill_preserve (cr);
if (gtk_widget_path_has_parent (path, GTK_TYPE_TREE_VIEW))
gdk_cairo_set_source_color (cr, text_color);
else
gdk_cairo_set_source_color (cr, fg_color);
cairo_stroke (cr);
}
cairo_set_line_width (cr, 1.5);
gdk_cairo_set_source_color (cr, text_color);
if (gtk_theming_engine_is_state_set (engine, GTK_STATE_INCONSISTENT))
{
cairo_move_to (cr, x + (width * 0.2), y + (height / 2));
cairo_line_to (cr, x + (width * 0.8), y + (height / 2));
}
else if (gtk_theming_engine_is_state_set (engine, GTK_STATE_ACTIVE))
{
cairo_move_to (cr, x + (width * 0.2), y + (height / 2));
cairo_line_to (cr, x + (width * 0.4), y + (height * 0.8));
cairo_line_to (cr, x + (width * 0.8), y + (height * 0.2));
}
cairo_stroke (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;
GtkStateType state;
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);
cairo_set_line_width (cr, 1);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"foreground-color", &fg_color,
"base-color", &base_color,
"text-color", &text_color,
NULL);
if (!gtk_widget_path_has_parent (path, GTK_TYPE_MENU))
{
cairo_arc (cr,
x + (width / 2),
y + (height / 2),
radius,
0, 2 * G_PI);
gdk_cairo_set_source_color (cr, base_color);
cairo_fill_preserve (cr);
if (gtk_widget_path_has_parent (path, GTK_TYPE_TREE_VIEW))
gdk_cairo_set_source_color (cr, text_color);
else
gdk_cairo_set_source_color (cr, fg_color);
cairo_stroke (cr);
}
if (gtk_widget_path_has_parent (path, GTK_TYPE_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))
{
cairo_move_to (cr, x + (width * 0.2), y + (height / 2));
cairo_line_to (cr, x + (width * 0.8), y + (height / 2));
cairo_stroke (cr);
}
if (gtk_theming_engine_is_state_set (engine, GTK_STATE_ACTIVE))
{
cairo_arc (cr,
x + (width / 2),
y + (height / 2),
radius / 2,
0, 2 * G_PI);
cairo_fill (cr);
}
cairo_restore (cr);
}
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) + 0.5);
cairo_line_to (cr, - (size / 2), (size / 4) + 0.5);
cairo_line_to (cr, (size / 2), (size / 4) + 0.5);
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;
GtkStateType state;
GdkColor *fg_color;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"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_rounded_rectangle (cairo_t *cr,
gdouble radius,
guint sides,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
gdouble r = 0;
if (sides & SIDE_BOTTOM)
{
/* Bottom left corner */
if (r == 0)
cairo_move_to (cr, x + 0.5, y + height - 0.5);
else
cairo_arc_negative (cr,
x + r + 0.5,
y + height - r - 0.5,
r,
135 * (G_PI / 180),
90 * (G_PI / 180));
/* Bottom side */
cairo_line_to (cr, x + width - r - 0.5, y + height - 0.5);
/* Bottom right corner */
if (r > 0)
cairo_arc_negative (cr,
x + width - r - 0.5,
y + height - r - 0.5,
r,
90 * (G_PI / 180),
45 * (G_PI / 180));
}
if (sides & SIDE_RIGHT)
{
/* Bottom right corner */
if (r == 0)
{
if ((sides & SIDE_BOTTOM) == 0)
cairo_move_to (cr, x + width - 0.5, y + height - 0.5);
}
else
cairo_arc_negative (cr,
x + width - r - 0.5,
y + height - r - 0.5,
r,
45 * (G_PI / 180), 0);
/* Right side */
cairo_line_to (cr, x + width - 0.5, y + r);
/* Top right corner */
if (r > 0)
cairo_arc_negative (cr,
x + width - r - 0.5,
y + r + 0.5,
r,
0, 315 * (G_PI / 180));
}
if (sides & SIDE_TOP)
{
/* Top right corner */
if (r == 0)
{
if ((sides & SIDE_RIGHT) == 0)
cairo_move_to (cr, x + width - 1, y + 0.5);
}
else
cairo_arc_negative (cr,
x + width - r - 0.5,
y + r + 0.5,
r,
315 * (G_PI / 180),
270 * (G_PI / 180));
/* Top side */
cairo_line_to (cr, x + 0.5 + r, y + 0.5);
/* Top left corner */
if (r > 0)
cairo_arc_negative (cr,
x + r + 0.5,
y + r + 0.5,
r,
270 * (G_PI / 180),
225 * (G_PI / 180));
}
if (sides & SIDE_LEFT)
{
/* Top left corner */
if (r == 0)
{
if ((sides & SIDE_TOP) == 0)
cairo_move_to (cr, x + 0.5, y + 0.5);
}
else
cairo_arc_negative (cr,
x + + r + 0.5,
y + r + 0.5,
r,
225 * (G_PI / 180),
180 * (G_PI / 180));
/* Left side */
cairo_line_to (cr, x + 0.5, y + height - r);
if (r > 0)
cairo_arc_negative (cr,
x + r + 0.5,
y + height - r + 0.5,
r,
180 * (G_PI / 180),
135 * (G_PI / 180));
}
}
static void
add_path_gap_side (cairo_t *cr,
GtkPositionType gap_side,
gdouble radius,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
gdouble xy0_gap,
gdouble xy1_gap)
{
if (gap_side == GTK_POS_TOP)
{
cairo_move_to (cr, x, y);
cairo_line_to (cr, x + xy0_gap, y);
cairo_move_to (cr, x + xy1_gap, y);
cairo_line_to (cr, x + width, y);
}
else if (gap_side == GTK_POS_BOTTOM)
{
cairo_move_to (cr, x, y + height);
cairo_line_to (cr, x + xy0_gap, y + height);
cairo_move_to (cr, x + xy1_gap, y + height);
cairo_line_to (cr, x + width, y + height);
}
else if (gap_side == GTK_POS_LEFT)
{
cairo_move_to (cr, x, y);
cairo_line_to (cr, x, y + xy0_gap);
cairo_move_to (cr, x, y + xy1_gap);
cairo_line_to (cr, x, y + height);
}
else
{
cairo_move_to (cr, x + width, y);
cairo_line_to (cr, x + width, y + xy0_gap);
cairo_move_to (cr, x + width, y + xy1_gap);
cairo_line_to (cr, x + width, y + height);
}
}
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)
{
GtkStateFlags flags;
GtkStateType state;
GdkColor *bg_color;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"background-color", &bg_color,
NULL);
add_path_rounded_rectangle (cr, 0,
SIDE_BOTTOM | SIDE_RIGHT | SIDE_TOP | SIDE_LEFT,
x, y, width, height);
cairo_close_path (cr);
gdk_cairo_set_source_color (cr, bg_color);
cairo_fill (cr);
cairo_restore (cr);
}
static void
gtk_theming_engine_render_frame (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GtkStateFlags flags;
GtkStateType state;
GdkColor *bg_color;
GdkColor lighter, darker;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
cairo_set_line_width (cr, 1);
gtk_theming_engine_get (engine, state,
"background-color", &bg_color,
NULL);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
if (flags & GTK_STATE_FLAG_ACTIVE)
{
add_path_rounded_rectangle (cr, 0,
SIDE_BOTTOM | SIDE_RIGHT,
x, y, width, height);
gdk_cairo_set_source_color (cr, &lighter);
cairo_stroke (cr);
add_path_rounded_rectangle (cr, 0,
SIDE_TOP | SIDE_LEFT,
x + 1, y + 1, width - 2, height - 2);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_stroke (cr);
add_path_rounded_rectangle (cr, 0,
SIDE_TOP | SIDE_LEFT,
x, y, width, height);
gdk_cairo_set_source_color (cr, &darker);
cairo_stroke (cr);
}
else
{
add_path_rounded_rectangle (cr, 0,
SIDE_BOTTOM | SIDE_RIGHT,
x, y, width, height);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_stroke (cr);
add_path_rounded_rectangle (cr, 0,
SIDE_BOTTOM | SIDE_RIGHT,
x, y, width - 1, height - 1);
gdk_cairo_set_source_color (cr, &darker);
cairo_stroke (cr);
add_path_rounded_rectangle (cr, 0,
SIDE_TOP | SIDE_LEFT,
x, y, width, height);
gdk_cairo_set_source_color (cr, &lighter);
cairo_stroke (cr);
}
cairo_restore (cr);
}
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;
GtkStateType state;
gdouble angle;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"foreground-color", &fg_color,
"background-color", &bg_color,
"base-color", &base_color,
NULL);
if (flags & GTK_STATE_FLAG_ACTIVE)
angle = G_PI;
else
angle = G_PI / 2;
cairo_set_line_width (cr, 1);
add_path_arrow (cr, angle, x + 2, y + 2,
MIN (width - 1, height - 1) - 4);
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)
{
const double dashes[] = { 0.5, 1.5 };
GdkColor *base_color;
GtkStateFlags flags;
GtkStateType state;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"base-color", &base_color,
NULL);
cairo_set_line_width (cr, 1.0);
cairo_set_dash (cr, dashes, 2, 0);
cairo_rectangle (cr,
x + 0.5,
y + 0.5,
width - 1,
height - 1);
gdk_cairo_set_source_color (cr, base_color);
cairo_stroke (cr);
cairo_restore (cr);
gdk_color_free (base_color);
}
static void
add_path_line (cairo_t *cr,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2)
{
cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
}
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;
GtkStateType state;
gint thickness, thickness_dark, thickness_light;
gint i;
thickness = 2;
thickness_dark = thickness / 2;
thickness_light = thickness - thickness_dark;
flags = gtk_theming_engine_get_state (engine);
cairo_save (cr);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"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);
if (y0 == y1)
{
/* Horizontal line */
for (i = 0; i < thickness_dark; i++)
{
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x0, y0, x1 - i - 1, y0);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, x1 - i, y0, x1, y0 + 1);
cairo_stroke (cr);
y0++;
}
for (i = 0; i < thickness_light; i++)
{
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x0, y0, x0 + thickness_light - i, y0);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, x0 + thickness_light - i, y0, x1, y0);
cairo_stroke (cr);
y0++;
}
}
else if (x0 == x1)
{
/* Vertical line */
for (i = 0; i < thickness_dark; i++)
{
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x0, y0, x0, y1 - i - 1);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, x0, y1 - i, x0, y1);
cairo_stroke (cr);
x0++;
}
for (i = 0; i < thickness_light; i++)
{
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x0, y0, x0, y0 + thickness_light - i - 1);
cairo_stroke (cr);
gdk_cairo_set_source_color (cr, &lighter);
add_path_line (cr, x0, y0 + thickness_light - i, x0, y1);
cairo_stroke (cr);
x0++;
}
}
else
{
/* Arbitrary line */
/* FIXME: implement thickness, etc */
gdk_cairo_set_source_color (cr, &darker);
add_path_line (cr, x0, y0, x1, y1);
cairo_stroke (cr);
}
cairo_restore (cr);
}
static void
gtk_theming_engine_render_layout (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
PangoLayout *layout)
{
GdkColor *fg_color;
GtkStateFlags flags;
GtkStateType state;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"foreground-color", &fg_color,
NULL);
cairo_move_to (cr, x, y);
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;
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);
if (gtk_widget_path_has_parent (path, GTK_TYPE_SCALE))
{
if (orientation == GTK_ORIENTATION_VERTICAL)
gtk_theming_engine_render_line (engine, cr,
x + 2, y + height / 2 - 1,
x + width - 4, y + height / 2 - 1);
else
gtk_theming_engine_render_line (engine, cr,
x + width / 2 - 1, y + 4,
x + width / 2 - 1, y + height - 4);
}
}
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;
GtkStateType state;
GdkColor *bg_color;
GdkColor lighter, darker;
guint sides;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
cairo_set_line_width (cr, 1);
gtk_theming_engine_get (engine, state,
"background-color", &bg_color,
NULL);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
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;
if (gap_side == GTK_POS_RIGHT ||
gap_side == GTK_POS_BOTTOM)
add_path_gap_side (cr, gap_side, 0,
x, y, width, height,
xy0_gap, xy1_gap);
add_path_rounded_rectangle (cr, 0, sides,
x, y, width, height);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_stroke (cr);
if (gap_side == GTK_POS_RIGHT ||
gap_side == GTK_POS_BOTTOM)
add_path_gap_side (cr, gap_side, 0,
x, y, width, height,
xy0_gap, xy1_gap);
add_path_rounded_rectangle (cr, 0, sides,
x, y, width - 1, height - 1);
gdk_cairo_set_source_color (cr, &darker);
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;
if (gap_side == GTK_POS_TOP ||
gap_side == GTK_POS_LEFT)
add_path_gap_side (cr, gap_side, 0,
x, y, width, height,
xy0_gap, xy1_gap);
add_path_rounded_rectangle (cr, 0, sides,
x, y, width, height);
gdk_cairo_set_source_color (cr, &lighter);
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;
GtkStateType state;
GdkColor *bg_color;
GdkColor lighter, darker;
guint sides;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_ACTIVE)
state = GTK_STATE_ACTIVE;
else if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
cairo_set_line_width (cr, 1);
gtk_theming_engine_get (engine, state,
"background-color", &bg_color,
NULL);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
add_path_rounded_rectangle (cr, 0,
SIDE_BOTTOM | SIDE_RIGHT | SIDE_TOP | SIDE_LEFT,
x, y, width, height);
cairo_close_path (cr);
gdk_cairo_set_source_color (cr, bg_color);
cairo_fill (cr);
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;
add_path_rounded_rectangle (cr, 0, sides,
x, y, width, height);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_stroke (cr);
add_path_rounded_rectangle (cr, 0, sides,
x, y, width - 1, height - 1);
gdk_cairo_set_source_color (cr, &darker);
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;
add_path_rounded_rectangle (cr, 0, sides,
x, y, width, height);
gdk_cairo_set_source_color (cr, &lighter);
cairo_stroke (cr);
cairo_restore (cr);
gdk_color_free (bg_color);
}
static void
paint_point (cairo_t *cr,
const GdkColor *lighter,
const GdkColor *darker,
gdouble x,
gdouble y)
{
cairo_move_to (cr, x - 0.5, y + 1);
cairo_line_to (cr, x - 0.5, y - 0.5);
cairo_line_to (cr, x + 1, y - 0.5);
gdk_cairo_set_source_color (cr, lighter);
cairo_stroke (cr);
cairo_move_to (cr, x + 1.5, y);
cairo_line_to (cr, x + 1.5, y + 1.5);
cairo_line_to (cr, x, y + 1.5);
gdk_cairo_set_source_color (cr, darker);
cairo_stroke (cr);
}
static void
gtk_theming_engine_render_handle (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkOrientation orientation)
{
GtkStateFlags flags;
GtkStateType state;
GdkColor *bg_color;
GdkColor lighter, darker;
gint xx, yy;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_ACTIVE)
state = GTK_STATE_ACTIVE;
else if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
cairo_set_line_width (cr, 1);
gtk_theming_engine_get (engine, state,
"background-color", &bg_color,
NULL);
color_shade (bg_color, 0.7, &darker);
color_shade (bg_color, 1.3, &lighter);
add_path_rounded_rectangle (cr, 0,
SIDE_BOTTOM | SIDE_RIGHT | SIDE_TOP | SIDE_LEFT,
x, y, width, height);
cairo_close_path (cr);
gdk_cairo_set_source_color (cr, bg_color);
cairo_fill (cr);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
for (xx = x + width / 2 - 15; xx <= x + width / 2 + 15; xx += 5)
paint_point (cr, &lighter, &darker, xx, y + height / 2 - 1);
else
for (yy = y + height / 2 - 15; yy <= y + height / 2 + 15; yy += 5)
paint_point (cr, &lighter, &darker, x + width / 2, yy);
cairo_restore (cr);
gdk_color_free (bg_color);
}
#define __GTK_THEMING_ENGINE_C__
#include "gtkaliasdef.c"
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