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gtk2/gtk/gtkthemingengine.c

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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;
}
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;
GtkStateType state;
gint exterior_size, interior_size, thickness, pad;
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);
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))
{
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 if (gtk_theming_engine_is_state_set (engine, GTK_STATE_ACTIVE))
{
cairo_translate (cr,
x + pad, y + pad);
cairo_scale (cr, interior_size / 7., interior_size / 7.);
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;
GtkStateType state;
gint exterior_size, interior_size, pad, thickness;
gdouble radius;
/* FIXME: set clipping */
flags = gtk_theming_engine_get_state (engine);
path = gtk_theming_engine_get_path (engine);
radius = MIN (width, height) / 2 - 0.5;
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);
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))
{
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))
{
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);
}
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);
}
typedef struct _ByteRange ByteRange;
struct _ByteRange
{
guint start;
guint end;
};
static ByteRange*
range_new (guint start,
guint end)
{
ByteRange *br = g_new (ByteRange, 1);
br->start = start;
br->end = end;
return br;
}
static PangoLayout*
get_insensitive_layout (PangoLayout *layout)
{
GSList *embossed_ranges = NULL;
GSList *shaded_ranges = NULL;
PangoLayoutIter *iter;
GSList *tmp_list = NULL;
PangoLayout *new_layout;
PangoAttrList *attrs;
iter = pango_layout_get_iter (layout);
do
{
PangoLayoutRun *run;
PangoAttribute *attr;
gboolean need_shade = FALSE;
ByteRange *br;
run = pango_layout_iter_get_run_readonly (iter);
if (run)
{
tmp_list = run->item->analysis.extra_attrs;
while (tmp_list != NULL)
{
attr = tmp_list->data;
switch (attr->klass->type)
{
case PANGO_ATTR_FOREGROUND:
case PANGO_ATTR_BACKGROUND:
need_shade = TRUE;
break;
default:
break;
}
if (need_shade)
break;
tmp_list = g_slist_next (tmp_list);
}
br = range_new (run->item->offset, run->item->offset + run->item->length);
if (need_shade)
shaded_ranges = g_slist_prepend (shaded_ranges, br);
else
embossed_ranges = g_slist_prepend (embossed_ranges, br);
}
}
while (pango_layout_iter_next_run (iter));
pango_layout_iter_free (iter);
new_layout = pango_layout_copy (layout);
attrs = pango_layout_get_attributes (new_layout);
if (attrs == NULL)
{
/* Create attr list if there wasn't one */
attrs = pango_attr_list_new ();
pango_layout_set_attributes (new_layout, attrs);
pango_attr_list_unref (attrs);
}
tmp_list = embossed_ranges;
while (tmp_list != NULL)
{
PangoAttribute *attr;
ByteRange *br = tmp_list->data;
attr = gdk_pango_attr_embossed_new (TRUE);
attr->start_index = br->start;
attr->end_index = br->end;
pango_attr_list_change (attrs, attr);
g_free (br);
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (embossed_ranges);
tmp_list = shaded_ranges;
while (tmp_list != NULL)
{
PangoAttribute *attr;
ByteRange *br = tmp_list->data;
attr = gdk_pango_attr_shade_new (0.7);
attr->start_index = br->start;
attr->end_index = br->end;
pango_attr_list_change (attrs, attr);
g_free (br);
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (shaded_ranges);
return new_layout;
}
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;
GdkScreen *screen;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
/* FIXME: Set clipping */
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);
screen = gtk_theming_engine_get_screen (engine);
if (state == GTK_STATE_INSENSITIVE)
{
PangoLayout *insensitive_layout;
insensitive_layout = get_insensitive_layout (layout);
gdk_pango_show_layout (screen,
cr, x, y,
insensitive_layout,
fg_color, NULL);
g_object_unref (insensitive_layout);
}
else
gdk_pango_show_layout (screen, cr, x, y, layout,
fg_color, NULL);
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
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,
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);
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 (orientation == GTK_ORIENTATION_HORIZONTAL)
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);
}
#define __GTK_THEMING_ENGINE_C__
#include "gtkaliasdef.c"
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