/* GTK - The GIMP Toolkit * Copyright (C) 2010 Carlos Garnacho * * 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 #include #include #include #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); 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; 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 (!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 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 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); } #define __GTK_THEMING_ENGINE_C__ #include "gtkaliasdef.c"