diff --git a/src/preview-widget.c b/src/preview-widget.c new file mode 100644 index 000000000..a6809ef95 --- /dev/null +++ b/src/preview-widget.c @@ -0,0 +1,424 @@ +/* Metacity theme preview widget */ + +/* + * Copyright (C) 2002 Havoc Pennington + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ + +#include "preview-widget.h" + +static void meta_preview_class_init (MetaPreviewClass *klass); +static void meta_preview_init (MetaPreview *preview); +static void meta_preview_size_request (GtkWidget *widget, + GtkRequisition *req); +static void meta_preview_size_allocate (GtkWidget *widget, + GtkAllocation *allocation); +static gboolean meta_preview_expose (GtkWidget *widget, + GdkEventExpose *event); +static void meta_preview_finalize (GObject *object); + +static GtkWidgetClass *parent_class; + +GtkType +meta_preview_get_type (void) +{ + static GtkType preview_type = 0; + + if (!preview_type) + { + static const GtkTypeInfo preview_info = + { + "MetaPreview", + sizeof (MetaPreview), + sizeof (MetaPreviewClass), + (GtkClassInitFunc) meta_preview_class_init, + (GtkObjectInitFunc) meta_preview_init, + /* reserved_1 */ NULL, + /* reserved_2 */ NULL, + (GtkClassInitFunc) NULL, + }; + + preview_type = gtk_type_unique (GTK_TYPE_BIN, &preview_info); + } + + return preview_type; +} + +static void +meta_preview_class_init (MetaPreviewClass *class) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (class); + GtkObjectClass *object_class; + GtkWidgetClass *widget_class; + + object_class = (GtkObjectClass*) class; + widget_class = (GtkWidgetClass*) class; + parent_class = gtk_type_class (GTK_TYPE_BIN); + + gobject_class->finalize = meta_preview_finalize; + + widget_class->expose_event = meta_preview_expose; + widget_class->size_request = meta_preview_size_request; + widget_class->size_allocate = meta_preview_size_allocate; +} + +static void +meta_preview_init (MetaPreview *preview) +{ + GTK_WIDGET_SET_FLAGS (preview, GTK_NO_WINDOW); + + preview->type = META_FRAME_TYPE_NORMAL; + preview->flags = + META_FRAME_ALLOWS_DELETE | + META_FRAME_ALLOWS_MENU | + META_FRAME_ALLOWS_MINIMIZE | + META_FRAME_ALLOWS_MAXIMIZE | + META_FRAME_ALLOWS_VERTICAL_RESIZE | + META_FRAME_ALLOWS_HORIZONTAL_RESIZE | + META_FRAME_HAS_FOCUS | + META_FRAME_ALLOWS_SHADE | + META_FRAME_ALLOWS_MOVE; + + preview->left_width = -1; + preview->right_width = -1; + preview->top_height = -1; + preview->bottom_height = -1; +} + +GtkWidget* +meta_preview_new (void) +{ + MetaPreview *preview; + + preview = gtk_type_new (META_TYPE_PREVIEW); + + return GTK_WIDGET (preview); +} + +static void +meta_preview_finalize (GObject *object) +{ + MetaPreview *preview; + + preview = META_PREVIEW (object); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +static void +ensure_info (MetaPreview *preview) +{ + GtkWidget *widget; + + widget = GTK_WIDGET (preview); + + if (preview->layout == NULL) + { + PangoFontDescription *font_desc; + double scale; + PangoAttrList *attrs; + PangoAttribute *attr; + + if (preview->theme) + scale = meta_theme_get_title_scale (preview->theme, + preview->type, + preview->flags); + else + scale = 1.0; + + preview->layout = gtk_widget_create_pango_layout (widget, + preview->title); + + font_desc = meta_gtk_widget_get_font_desc (widget, scale); + + preview->text_height = + meta_pango_font_desc_get_text_height (font_desc, + gtk_widget_get_pango_context (widget)); + + attrs = pango_attr_list_new (); + + attr = pango_attr_size_new (pango_font_description_get_size (font_desc)); + attr->start_index = 0; + attr->end_index = G_MAXINT; + + pango_attr_list_insert (attrs, attr); + + pango_layout_set_attributes (preview->layout, attrs); + + pango_attr_list_unref (attrs); + + pango_font_description_free (font_desc); + } + + if (preview->top_height < 0) + { + if (preview->theme) + { + meta_theme_get_frame_borders (preview->theme, + preview->type, + preview->text_height, + preview->flags, + &preview->top_height, + &preview->bottom_height, + &preview->left_width, + &preview->right_width); + } + else + { + preview->top_height = 0; + preview->bottom_height = 0; + preview->left_width = 0; + preview->right_width = 0; + } + } +} + +static gboolean +meta_preview_expose (GtkWidget *widget, + GdkEventExpose *event) +{ + MetaPreview *preview; + int border_width; + int client_width; + int client_height; + MetaButtonState button_states[META_BUTTON_TYPE_LAST] = + { + META_BUTTON_STATE_NORMAL, + META_BUTTON_STATE_NORMAL, + META_BUTTON_STATE_NORMAL, + META_BUTTON_STATE_NORMAL + }; + + g_return_val_if_fail (META_IS_PREVIEW (widget), FALSE); + g_return_val_if_fail (event != NULL, FALSE); + + preview = META_PREVIEW (widget); + + ensure_info (preview); + + border_width = GTK_CONTAINER (widget)->border_width; + + client_width = widget->allocation.width - preview->left_width - preview->right_width - border_width * 2; + client_height = widget->allocation.height - preview->top_height - preview->bottom_height - border_width * 2; + + if (client_width < 0) + client_width = 1; + if (client_height < 0) + client_height = 1; + + if (preview->theme) + { + border_width = GTK_CONTAINER (widget)->border_width; + + meta_theme_draw_frame (preview->theme, + widget, + widget->window, + &event->area, + widget->allocation.x + border_width, + widget->allocation.y + border_width, + preview->type, + preview->flags, + client_width, client_height, + preview->layout, + preview->text_height, + button_states, + meta_preview_get_mini_icon (), + meta_preview_get_icon ()); + } + + /* draw child */ + return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event); +} + +static void +meta_preview_size_request (GtkWidget *widget, + GtkRequisition *req) +{ + MetaPreview *preview; + + preview = META_PREVIEW (widget); + + ensure_info (preview); + + req->width = preview->left_width + preview->right_width; + req->height = preview->top_height + preview->bottom_height; + + if (GTK_BIN (preview)->child && + GTK_WIDGET_VISIBLE (GTK_BIN (preview)->child)) + { + GtkRequisition child_requisition; + + gtk_widget_size_request (GTK_BIN (preview)->child, &child_requisition); + + req->width += child_requisition.width; + req->height += child_requisition.height; + } + + req->width += GTK_CONTAINER (widget)->border_width * 2; + req->height += GTK_CONTAINER (widget)->border_width * 2; +} + +static void +meta_preview_size_allocate (GtkWidget *widget, + GtkAllocation *allocation) +{ + MetaPreview *preview; + int border_width; + GtkAllocation child_allocation; + + preview = META_PREVIEW (widget); + + ensure_info (preview); + + widget->allocation = *allocation; + + border_width = GTK_CONTAINER (widget)->border_width; + + if (GTK_BIN (widget)->child && + GTK_WIDGET_VISIBLE (GTK_BIN (widget)->child)) + { + child_allocation.x = widget->allocation.x + border_width + preview->left_width; + child_allocation.y = widget->allocation.y + border_width + preview->top_height; + + child_allocation.width = MAX (1, widget->allocation.width - border_width * 2 - preview->left_width - preview->right_width); + child_allocation.height = MAX (1, widget->allocation.height - border_width * 2 - preview->top_height - preview->bottom_height); + + gtk_widget_size_allocate (GTK_BIN (widget)->child, &child_allocation); + } +} + +static void +clear_cache (MetaPreview *preview) +{ + if (preview->layout) + { + g_object_unref (G_OBJECT (preview->layout)); + preview->layout = NULL; + } + + preview->left_width = -1; + preview->right_width = -1; + preview->top_height = -1; + preview->bottom_height = -1; +} + +void +meta_preview_set_theme (MetaPreview *preview, + MetaTheme *theme) +{ + g_return_if_fail (META_IS_PREVIEW (preview)); + + preview->theme = theme; + + clear_cache (preview); + + gtk_widget_queue_resize (GTK_WIDGET (preview)); +} + +void +meta_preview_set_title (MetaPreview *preview, + const char *title) +{ + g_return_if_fail (META_IS_PREVIEW (preview)); + + g_free (preview->title); + preview->title = g_strdup (title); + + clear_cache (preview); + + gtk_widget_queue_resize (GTK_WIDGET (preview)); +} + +void +meta_preview_set_frame_type (MetaPreview *preview, + MetaFrameType type) +{ + g_return_if_fail (META_IS_PREVIEW (preview)); + + preview->type = type; + + clear_cache (preview); + + gtk_widget_queue_resize (GTK_WIDGET (preview)); +} + +void +meta_preview_set_frame_flags (MetaPreview *preview, + MetaFrameFlags flags) +{ + g_return_if_fail (META_IS_PREVIEW (preview)); + + preview->flags = flags; + + clear_cache (preview); + + gtk_widget_queue_resize (GTK_WIDGET (preview)); +} + +#include "inlinepixbufs.h" + +GdkPixbuf* +meta_preview_get_icon (void) +{ + static GdkPixbuf *default_icon = NULL; + + if (default_icon == NULL) + { + GdkPixbuf *base; + + base = gdk_pixbuf_new_from_inline (-1, default_icon_data, + FALSE, + NULL); + + g_assert (base); + + default_icon = gdk_pixbuf_scale_simple (base, + META_ICON_WIDTH, + META_ICON_HEIGHT, + GDK_INTERP_BILINEAR); + + g_object_unref (G_OBJECT (base)); + } + + return default_icon; +} + +GdkPixbuf* +meta_preview_get_mini_icon (void) +{ + static GdkPixbuf *default_icon = NULL; + + if (default_icon == NULL) + { + GdkPixbuf *base; + + base = gdk_pixbuf_new_from_inline (-1, default_icon_data, + FALSE, + NULL); + + g_assert (base); + + default_icon = gdk_pixbuf_scale_simple (base, + META_MINI_ICON_WIDTH, + META_MINI_ICON_HEIGHT, + GDK_INTERP_BILINEAR); + + g_object_unref (G_OBJECT (base)); + } + + return default_icon; +} diff --git a/src/preview-widget.h b/src/preview-widget.h new file mode 100644 index 000000000..5b21fe7e7 --- /dev/null +++ b/src/preview-widget.h @@ -0,0 +1,78 @@ +/* Metacity theme preview widget */ + +/* + * Copyright (C) 2002 Havoc Pennington + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ + +#include "theme.h" +#include + +#ifndef META_PREVIEW_WIDGET_H +#define META_PREVIEW_WIDGET_H + +#define META_TYPE_PREVIEW (meta_preview_get_type ()) +#define META_PREVIEW(obj) (GTK_CHECK_CAST ((obj), META_TYPE_PREVIEW, MetaPreview)) +#define META_PREVIEW_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), META_TYPE_PREVIEW, MetaPreviewClass)) +#define META_IS_PREVIEW(obj) (GTK_CHECK_TYPE ((obj), META_TYPE_PREVIEW)) +#define META_IS_PREVIEW_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), META_TYPE_PREVIEW)) +#define META_PREVIEW_GET_CLASS(obj) (GTK_CHECK_GET_CLASS ((obj), META_TYPE_PREVIEW, MetaPreviewClass)) + +typedef struct _MetaPreview MetaPreview; +typedef struct _MetaPreviewClass MetaPreviewClass; + +struct _MetaPreview +{ + GtkBin bin; + + MetaTheme *theme; + char *title; + MetaFrameType type; + MetaFrameFlags flags; + + PangoLayout *layout; + int text_height; + + int left_width; + int right_width; + int top_height; + int bottom_height; + +}; + +struct _MetaPreviewClass +{ + GtkBinClass parent_class; +}; + + +GtkType meta_preview_get_type (void) G_GNUC_CONST; +GtkWidget* meta_preview_new (void); + +void meta_preview_set_theme (MetaPreview *preview, + MetaTheme *theme); +void meta_preview_set_title (MetaPreview *preview, + const char *title); +void meta_preview_set_frame_type (MetaPreview *preview, + MetaFrameType type); +void meta_preview_set_frame_flags (MetaPreview *preview, + MetaFrameFlags flags); + +GdkPixbuf* meta_preview_get_icon (void); +GdkPixbuf* meta_preview_get_mini_icon (void); + +#endif