987 lines
38 KiB
C
987 lines
38 KiB
C
/* Foreign drawing
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*
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* Many applications can't use GTK+ widgets, for a variety of reasons,
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* but still want their user interface to appear integrated with the
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* rest of the desktop, and follow GTK+ themes. This demo shows how to
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* use GtkStyleContext and the gtk_render_ APIs to achieve this.
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*
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* Note that this is a very simple, non-interactive example.
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*/
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#include <gtk/gtk.h>
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#include <string.h>
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static void
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append_element (GtkWidgetPath *path,
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const char *selector)
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{
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static const struct {
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const char *name;
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GtkStateFlags state_flag;
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} pseudo_classes[] = {
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{ "active", GTK_STATE_FLAG_ACTIVE },
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{ "hover", GTK_STATE_FLAG_PRELIGHT },
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{ "selected", GTK_STATE_FLAG_SELECTED },
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{ "disabled", GTK_STATE_FLAG_INSENSITIVE },
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{ "indeterminate", GTK_STATE_FLAG_INCONSISTENT },
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{ "focus", GTK_STATE_FLAG_FOCUSED },
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{ "backdrop", GTK_STATE_FLAG_BACKDROP },
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{ "dir(ltr)", GTK_STATE_FLAG_DIR_LTR },
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{ "dir(rtl)", GTK_STATE_FLAG_DIR_RTL },
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{ "link", GTK_STATE_FLAG_LINK },
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{ "visited", GTK_STATE_FLAG_VISITED },
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{ "checked", GTK_STATE_FLAG_CHECKED },
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{ "drop(active)", GTK_STATE_FLAG_DROP_ACTIVE }
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};
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const char *next;
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char *name;
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char type;
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guint i;
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next = strpbrk (selector, "#.:");
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if (next == NULL)
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next = selector + strlen (selector);
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name = g_strndup (selector, next - selector);
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if (g_ascii_isupper (selector[0]))
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{
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GType gtype;
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gtype = g_type_from_name (name);
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if (gtype == G_TYPE_INVALID)
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{
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g_critical ("Unknown type name `%s'", name);
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g_free (name);
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return;
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}
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gtk_widget_path_append_type (path, gtype);
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}
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else
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{
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/* Omit type, we're using name */
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gtk_widget_path_append_type (path, G_TYPE_NONE);
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gtk_widget_path_iter_set_object_name (path, -1, name);
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}
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g_free (name);
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while (*next != '\0')
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{
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type = *next;
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selector = next + 1;
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next = strpbrk (selector, "#.:");
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if (next == NULL)
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next = selector + strlen (selector);
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name = g_strndup (selector, next - selector);
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switch (type)
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{
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case '#':
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gtk_widget_path_iter_set_name (path, -1, name);
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break;
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case '.':
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gtk_widget_path_iter_add_class (path, -1, name);
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break;
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case ':':
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for (i = 0; i < G_N_ELEMENTS (pseudo_classes); i++)
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{
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if (g_str_equal (pseudo_classes[i].name, name))
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{
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gtk_widget_path_iter_set_state (path,
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-1,
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gtk_widget_path_iter_get_state (path, -1)
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| pseudo_classes[i].state_flag);
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break;
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}
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}
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if (i == G_N_ELEMENTS (pseudo_classes))
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g_critical ("Unknown pseudo-class :%s", name);
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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g_free (name);
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}
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}
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static GtkStyleContext *
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create_context_for_path (GtkWidgetPath *path,
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GtkStyleContext *parent)
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{
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GtkStyleContext *context;
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context = gtk_style_context_new ();
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gtk_style_context_set_path (context, path);
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gtk_style_context_set_parent (context, parent);
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/* Unfortunately, we have to explicitly set the state again here
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* for it to take effect
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*/
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gtk_style_context_set_state (context, gtk_widget_path_iter_get_state (path, -1));
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gtk_widget_path_unref (path);
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return context;
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}
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static GtkStyleContext *
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get_style (GtkStyleContext *parent,
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const char *selector)
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{
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GtkWidgetPath *path;
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if (parent)
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path = gtk_widget_path_copy (gtk_style_context_get_path (parent));
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else
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path = gtk_widget_path_new ();
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append_element (path, selector);
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return create_context_for_path (path, parent);
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}
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static GtkStyleContext *
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get_style_with_siblings (GtkStyleContext *parent,
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const char *selector,
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const char **siblings,
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gint position)
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{
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GtkWidgetPath *path, *siblings_path;
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guint i;
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if (parent)
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path = gtk_widget_path_copy (gtk_style_context_get_path (parent));
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else
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path = gtk_widget_path_new ();
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siblings_path = gtk_widget_path_new ();
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for (i = 0; siblings[i]; i++)
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append_element (siblings_path, siblings[i]);
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gtk_widget_path_append_with_siblings (path, siblings_path, position);
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gtk_widget_path_unref (siblings_path);
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return create_context_for_path (path, parent);
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}
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static void
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draw_style_common (GtkStyleContext *context,
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cairo_t *cr,
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gint x,
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gint y,
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gint width,
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gint height,
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gint *contents_x,
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gint *contents_y,
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gint *contents_width,
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gint *contents_height)
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{
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GtkBorder margin, border, padding;
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int min_width, min_height;
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gtk_style_context_get_margin (context, gtk_style_context_get_state (context), &margin);
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gtk_style_context_get_border (context, gtk_style_context_get_state (context), &border);
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gtk_style_context_get_padding (context, gtk_style_context_get_state (context), &padding);
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gtk_style_context_get (context, gtk_style_context_get_state (context),
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"min-width", &min_width,
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"min-height", &min_height,
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NULL);
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x += margin.left;
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y += margin.top;
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width -= margin.left + margin.right;
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height -= margin.top + margin.bottom;
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width = MAX (width, min_width);
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height = MAX (height, min_height);
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gtk_render_background (context, cr, x, y, width, height);
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gtk_render_frame (context, cr, x, y, width, height);
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if (contents_x)
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*contents_x = x + border.left + padding.left;
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if (contents_y)
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*contents_y = y + border.top + padding.top;
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if (contents_width)
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*contents_width = width - border.left - border.right - padding.left - padding.right;
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if (contents_height)
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*contents_height = height - border.top - border.bottom - padding.top - padding.bottom;
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}
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static void
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query_size (GtkStyleContext *context,
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gint *width,
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gint *height)
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{
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GtkBorder margin, border, padding;
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int min_width, min_height;
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gtk_style_context_get_margin (context, gtk_style_context_get_state (context), &margin);
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gtk_style_context_get_border (context, gtk_style_context_get_state (context), &border);
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gtk_style_context_get_padding (context, gtk_style_context_get_state (context), &padding);
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gtk_style_context_get (context, gtk_style_context_get_state (context),
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"min-width", &min_width,
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"min-height", &min_height,
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NULL);
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min_width += margin.left + margin.right + border.left + border.right + padding.left + padding.right;
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min_height += margin.top + margin.bottom + border.top + border.bottom + padding.top + padding.bottom;
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if (width)
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*width = MAX (*width, min_width);
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if (height)
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*height = MAX (*height, min_height);
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}
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static void
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draw_menu (GtkWidget *widget,
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cairo_t *cr,
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gint x,
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gint y,
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gint width,
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gint *height)
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{
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GtkStyleContext *menu_context;
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GtkStyleContext *menuitem_context;
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GtkStyleContext *hovermenuitem_context;
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GtkStyleContext *hoveredarrowmenuitem_context;
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GtkStyleContext *arrowmenuitem_context;
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GtkStyleContext *checkmenuitem_context;
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GtkStyleContext *disabledarrowmenuitem_context;
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GtkStyleContext *disabledcheckmenuitem_context;
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GtkStyleContext *radiomenuitem_context;
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GtkStyleContext *disablemenuitem_context;
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GtkStyleContext *disabledradiomenuitem_context;
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GtkStyleContext *separatormenuitem_context;
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gint menuitem1_height, menuitem2_height, menuitem3_height, menuitem4_height, menuitem5_height;
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gint contents_x, contents_y, contents_width, contents_height;
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gint menu_x, menu_y, menu_width, menu_height;
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gint arrow_width, arrow_height, arrow_size;
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gint toggle_x, toggle_y, toggle_width, toggle_height;
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/* This information is taken from the GtkMenu docs, see "CSS nodes" */
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menu_context = get_style (gtk_widget_get_style_context(widget), "menu");
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hovermenuitem_context = get_style (menu_context, "menuitem:hover");
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hoveredarrowmenuitem_context = get_style (hovermenuitem_context, "arrow.right:dir(ltr)");
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menuitem_context = get_style (menu_context, "menuitem");
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arrowmenuitem_context = get_style (menuitem_context, "arrow:dir(rtl)");
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disablemenuitem_context = get_style (menu_context, "menuitem:disabled");
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disabledarrowmenuitem_context = get_style (disablemenuitem_context, "arrow:dir(rtl)");
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checkmenuitem_context = get_style (menuitem_context, "check:checked");
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disabledcheckmenuitem_context = get_style (disablemenuitem_context, "check");
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separatormenuitem_context = get_style (menu_context, "separator:disabled");
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radiomenuitem_context = get_style (menuitem_context, "radio:checked");
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disabledradiomenuitem_context = get_style (disablemenuitem_context, "radio");
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*height = 0;
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query_size (menu_context, NULL, height);
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menuitem1_height = 0;
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query_size (hovermenuitem_context, NULL, &menuitem1_height);
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query_size (hoveredarrowmenuitem_context, NULL, &menuitem1_height);
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*height += menuitem1_height;
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menuitem2_height = 0;
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query_size (menu_context, NULL, &menuitem5_height);
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query_size (menuitem_context, NULL, &menuitem2_height);
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query_size (arrowmenuitem_context, NULL, &menuitem2_height);
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query_size (disabledarrowmenuitem_context, NULL, &menuitem2_height);
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*height += menuitem2_height;
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menuitem3_height = 0;
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query_size (menu_context, NULL, &menuitem5_height);
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query_size (menuitem_context, NULL, &menuitem3_height);
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query_size (checkmenuitem_context, NULL, &menuitem3_height);
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query_size (disabledcheckmenuitem_context, NULL, &menuitem3_height);
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*height += menuitem3_height;
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menuitem4_height = 0;
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query_size (menu_context, NULL, &menuitem5_height);
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query_size (separatormenuitem_context, NULL, &menuitem4_height);
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*height += menuitem4_height;
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menuitem5_height = 0;
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query_size (menu_context, NULL, &menuitem5_height);
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query_size (menuitem_context, NULL, &menuitem5_height);
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query_size (radiomenuitem_context, NULL, &menuitem5_height);
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query_size (disabledradiomenuitem_context, NULL, &menuitem5_height);
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*height += menuitem5_height;
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draw_style_common (menu_context, cr, x, y, width, *height,
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&menu_x, &menu_y, &menu_width, &menu_height);
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/* Hovered with right arrow */
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gtk_style_context_get (hoveredarrowmenuitem_context, gtk_style_context_get_state (hoveredarrowmenuitem_context),
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"min-width", &arrow_width, "min-height", &arrow_height, NULL);
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arrow_size = MIN (arrow_width, arrow_height);
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draw_style_common (hovermenuitem_context, cr, menu_x, menu_y, menu_width, menuitem1_height,
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&contents_x, &contents_y, &contents_width, &contents_height);
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gtk_render_arrow (hoveredarrowmenuitem_context, cr, G_PI / 2,
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contents_x + contents_width - arrow_size,
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contents_y + (contents_height - arrow_size) / 2, arrow_size);
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/* Left arrow sensitive, and right arrow insensitive */
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draw_style_common (menuitem_context, cr, menu_x, menu_y + menuitem1_height, menu_width, menuitem2_height,
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&contents_x, &contents_y, &contents_width, &contents_height);
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gtk_style_context_get (arrowmenuitem_context, gtk_style_context_get_state (arrowmenuitem_context),
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"min-width", &arrow_width, "min-height", &arrow_height, NULL);
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arrow_size = MIN (arrow_width, arrow_height);
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gtk_render_arrow (arrowmenuitem_context, cr, G_PI / 2,
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contents_x,
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contents_y + (contents_height - arrow_size) / 2, arrow_size);
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gtk_style_context_get (disabledarrowmenuitem_context, gtk_style_context_get_state (disabledarrowmenuitem_context),
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"min-width", &arrow_width, "min-height", &arrow_height, NULL);
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arrow_size = MIN (arrow_width, arrow_height);
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gtk_render_arrow (disabledarrowmenuitem_context, cr, G_PI / 2,
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contents_x + contents_width - arrow_size,
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contents_y + (contents_height - arrow_size) / 2, arrow_size);
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/* Left check enabled, sensitive, and right check unchecked, insensitive */
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draw_style_common (menuitem_context, cr, menu_x, menu_y + menuitem1_height + menuitem2_height, menu_width, menuitem3_height,
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&contents_x, &contents_y, &contents_width, &contents_height);
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gtk_style_context_get (checkmenuitem_context, gtk_style_context_get_state (checkmenuitem_context),
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"min-width", &toggle_width, "min-height", &toggle_height, NULL);
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draw_style_common (checkmenuitem_context, cr,
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contents_x,
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contents_y,
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toggle_width, toggle_height,
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&toggle_x, &toggle_y, &toggle_width, &toggle_height);
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gtk_render_check (checkmenuitem_context, cr, toggle_x, toggle_y, toggle_width, toggle_height);
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gtk_style_context_get (disabledcheckmenuitem_context, gtk_style_context_get_state (disabledcheckmenuitem_context),
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"min-width", &toggle_width, "min-height", &toggle_height, NULL);
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draw_style_common (disabledcheckmenuitem_context, cr,
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contents_x + contents_width - toggle_width,
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contents_y,
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toggle_width, toggle_height,
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&toggle_x, &toggle_y, &toggle_width, &toggle_height);
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gtk_render_check (disabledcheckmenuitem_context, cr, toggle_x, toggle_y, toggle_width, toggle_height);
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/* Separator */
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draw_style_common (separatormenuitem_context, cr, menu_x, menu_y + menuitem1_height + menuitem2_height + menuitem3_height,
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menu_width, menuitem4_height,
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NULL, NULL, NULL, NULL);
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/* Left check enabled, sensitive, and right check unchecked, insensitive */
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draw_style_common (menuitem_context, cr, menu_x, menu_y + menuitem1_height + menuitem2_height + menuitem3_height + menuitem4_height,
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menu_width, menuitem5_height,
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&contents_x, &contents_y, &contents_width, &contents_height);
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gtk_style_context_get (radiomenuitem_context, gtk_style_context_get_state (radiomenuitem_context),
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"min-width", &toggle_width, "min-height", &toggle_height, NULL);
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draw_style_common (radiomenuitem_context, cr,
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contents_x,
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contents_y,
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toggle_width, toggle_height,
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&toggle_x, &toggle_y, &toggle_width, &toggle_height);
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gtk_render_check (radiomenuitem_context, cr, toggle_x, toggle_y, toggle_width, toggle_height);
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gtk_style_context_get (disabledradiomenuitem_context, gtk_style_context_get_state (disabledradiomenuitem_context),
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"min-width", &toggle_width, "min-height", &toggle_height, NULL);
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draw_style_common (disabledradiomenuitem_context, cr,
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contents_x + contents_width - toggle_width,
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contents_y,
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toggle_width, toggle_height,
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&toggle_x, &toggle_y, &toggle_width, &toggle_height);
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gtk_render_check (disabledradiomenuitem_context, cr, toggle_x, toggle_y, toggle_width, toggle_height);
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g_object_unref (menu_context);
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g_object_unref (menuitem_context);
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g_object_unref (hovermenuitem_context);
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g_object_unref (hoveredarrowmenuitem_context);
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g_object_unref (arrowmenuitem_context);
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g_object_unref (checkmenuitem_context);
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g_object_unref (disabledarrowmenuitem_context);
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g_object_unref (disabledcheckmenuitem_context);
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g_object_unref (radiomenuitem_context);
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g_object_unref (disablemenuitem_context);
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g_object_unref (disabledradiomenuitem_context);
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g_object_unref (separatormenuitem_context);
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}
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static void
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draw_menubar (GtkWidget *widget,
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cairo_t *cr,
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gint x,
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gint y,
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gint width,
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gint *height)
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{
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GtkStyleContext *frame_context;
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GtkStyleContext *border_context;
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GtkStyleContext *menubar_context;
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GtkStyleContext *hovered_menuitem_context;
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GtkStyleContext *menuitem_context;
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gint contents_x, contents_y, contents_width, contents_height;
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gint item_width;
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/* Menubar background is the same color as our base background, so use a frame */
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frame_context = get_style (NULL, "frame");
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border_context = get_style (frame_context, "border");
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/* This information is taken from the GtkMenuBar docs, see "CSS nodes" */
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menubar_context = get_style (NULL, "menubar");
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hovered_menuitem_context = get_style (menubar_context, "menuitem:hover");
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menuitem_context = get_style (menubar_context, "menuitem");
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*height = 0;
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query_size (frame_context, NULL, height);
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query_size (border_context, NULL, height);
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query_size (menubar_context, NULL, height);
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query_size (hovered_menuitem_context, NULL, height);
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query_size (menuitem_context, NULL, height);
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draw_style_common (frame_context, cr, x, y, width, *height,
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NULL, NULL, NULL, NULL);
|
|
draw_style_common (border_context, cr, x, y, width, *height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
draw_style_common (menubar_context, cr, contents_x, contents_y, contents_width, contents_height,
|
|
NULL, NULL, NULL, NULL);
|
|
item_width = contents_width / 3;
|
|
draw_style_common (hovered_menuitem_context, cr, contents_x, contents_y, item_width, contents_height,
|
|
NULL, NULL, NULL, NULL);
|
|
draw_style_common (menuitem_context, cr, contents_x + item_width * 2, contents_y, item_width, contents_height,
|
|
NULL, NULL, NULL, NULL);
|
|
|
|
g_object_unref (menuitem_context);
|
|
g_object_unref (hovered_menuitem_context);
|
|
g_object_unref (menubar_context);
|
|
g_object_unref (border_context);
|
|
g_object_unref (frame_context);
|
|
}
|
|
|
|
static void
|
|
draw_notebook (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GtkStyleContext *notebook_context;
|
|
GtkStyleContext *header_context;
|
|
GtkStyleContext *tabs_context;
|
|
GtkStyleContext *tab1_context, *tab2_context;
|
|
GtkStyleContext *stack_context;
|
|
gint header_height;
|
|
gint contents_x, contents_y, contents_width, contents_height;
|
|
|
|
/* This information is taken from the GtkNotebook docs, see "CSS nodes" */
|
|
notebook_context = get_style (NULL, "notebook.frame");
|
|
header_context = get_style (notebook_context, "header.top");
|
|
tabs_context = get_style (header_context, "tabs");
|
|
tab1_context = get_style (tabs_context, "tab:checked");
|
|
tab2_context = get_style (tabs_context, "tab:hover");
|
|
stack_context = get_style (notebook_context, "stack");
|
|
|
|
header_height = 0;
|
|
query_size (notebook_context, NULL, &header_height);
|
|
query_size (header_context, NULL, &header_height);
|
|
query_size (tabs_context, NULL, &header_height);
|
|
query_size (tab1_context, NULL, &header_height);
|
|
query_size (tab2_context, NULL, &header_height);
|
|
|
|
draw_style_common (notebook_context, cr, x, y, width, height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (header_context, cr, x, y, width, header_height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (tabs_context, cr, x, y, width, header_height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (tab1_context, cr, x, y, width / 2, header_height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
draw_style_common (tab2_context, cr, x + width / 2, y, width / 2, header_height,
|
|
NULL, NULL, NULL, NULL);
|
|
draw_style_common (stack_context, cr, x, y + header_height, width,height - header_height,
|
|
NULL, NULL, NULL, NULL);
|
|
|
|
g_object_unref (stack_context);
|
|
g_object_unref (tabs_context);
|
|
g_object_unref (tab1_context);
|
|
g_object_unref (tab2_context);
|
|
g_object_unref (header_context);
|
|
g_object_unref (notebook_context);
|
|
}
|
|
|
|
static void
|
|
draw_horizontal_scrollbar (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint position,
|
|
GtkStateFlags state,
|
|
gint *height)
|
|
{
|
|
GtkStyleContext *scrollbar_context;
|
|
GtkStyleContext *contents_context;
|
|
GtkStyleContext *trough_context;
|
|
GtkStyleContext *slider_context;
|
|
gint slider_width;
|
|
|
|
/* This information is taken from the GtkScrollbar docs, see "CSS nodes" */
|
|
scrollbar_context = get_style (NULL, "scrollbar.horizontal.bottom");
|
|
contents_context = get_style (scrollbar_context, "contents");
|
|
trough_context = get_style (contents_context, "trough");
|
|
slider_context = get_style (trough_context, "slider");
|
|
|
|
gtk_style_context_set_state (scrollbar_context, state);
|
|
gtk_style_context_set_state (contents_context, state);
|
|
gtk_style_context_set_state (trough_context, state);
|
|
gtk_style_context_set_state (slider_context, state);
|
|
|
|
*height = 0;
|
|
query_size (scrollbar_context, NULL, height);
|
|
query_size (contents_context, NULL, height);
|
|
query_size (trough_context, NULL, height);
|
|
query_size (slider_context, NULL, height);
|
|
|
|
gtk_style_context_get (slider_context, gtk_style_context_get_state (slider_context),
|
|
"min-width", &slider_width, NULL);
|
|
|
|
draw_style_common (scrollbar_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (contents_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (trough_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (slider_context, cr, x + position, y, slider_width, *height, NULL, NULL, NULL, NULL);
|
|
|
|
g_object_unref (slider_context);
|
|
g_object_unref (trough_context);
|
|
g_object_unref (contents_context);
|
|
g_object_unref (scrollbar_context);
|
|
}
|
|
|
|
static void
|
|
draw_text (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height,
|
|
const gchar *text,
|
|
GtkStateFlags state)
|
|
{
|
|
GtkStyleContext *label_context;
|
|
GtkStyleContext *selection_context;
|
|
GtkStyleContext *context;
|
|
PangoLayout *layout;
|
|
|
|
/* This information is taken from the GtkLabel docs, see "CSS nodes" */
|
|
label_context = get_style (NULL, "label.view");
|
|
selection_context = get_style (label_context, "selection");
|
|
|
|
gtk_style_context_set_state (label_context, state);
|
|
|
|
if (state & GTK_STATE_FLAG_SELECTED)
|
|
context = selection_context;
|
|
else
|
|
context = label_context;
|
|
|
|
layout = gtk_widget_create_pango_layout (widget, text);
|
|
|
|
gtk_render_background (context, cr, x, y, width, height);
|
|
gtk_render_frame (context, cr, x, y, width, height);
|
|
gtk_render_layout (context, cr, x, y, layout);
|
|
|
|
g_object_unref (layout);
|
|
|
|
g_object_unref (selection_context);
|
|
g_object_unref (label_context);
|
|
}
|
|
|
|
static void
|
|
draw_check (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
GtkStateFlags state,
|
|
gint *width,
|
|
gint *height)
|
|
{
|
|
GtkStyleContext *button_context;
|
|
GtkStyleContext *check_context;
|
|
gint contents_x, contents_y, contents_width, contents_height;
|
|
|
|
/* This information is taken from the GtkCheckButton docs, see "CSS nodes" */
|
|
button_context = get_style (NULL, "checkbutton");
|
|
check_context = get_style (button_context, "check");
|
|
|
|
gtk_style_context_set_state (check_context, state);
|
|
|
|
*width = *height = 0;
|
|
query_size (button_context, width, height);
|
|
query_size (check_context, width, height);
|
|
|
|
draw_style_common (button_context, cr, x, y, *width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (check_context, cr, x, y, *width, *height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
gtk_render_check (check_context, cr, contents_x, contents_y, contents_width, contents_height);
|
|
|
|
g_object_unref (check_context);
|
|
g_object_unref (button_context);
|
|
|
|
}
|
|
|
|
static void
|
|
draw_radio (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
GtkStateFlags state,
|
|
gint *width,
|
|
gint *height)
|
|
{
|
|
GtkStyleContext *button_context;
|
|
GtkStyleContext *check_context;
|
|
gint contents_x, contents_y, contents_width, contents_height;
|
|
|
|
/* This information is taken from the GtkRadioButton docs, see "CSS nodes" */
|
|
button_context = get_style (NULL, "radiobutton");
|
|
check_context = get_style (button_context, "radio");
|
|
|
|
gtk_style_context_set_state (check_context, state);
|
|
|
|
*width = *height = 0;
|
|
query_size (button_context, width, height);
|
|
query_size (check_context, width, height);
|
|
|
|
draw_style_common (button_context, cr, x, y, *width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (check_context, cr, x, y, *width, *height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
gtk_render_check (check_context, cr, contents_x, contents_y, contents_width, contents_height);
|
|
|
|
g_object_unref (check_context);
|
|
g_object_unref (button_context);
|
|
|
|
}
|
|
|
|
static void
|
|
draw_progress (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint position,
|
|
gint *height)
|
|
{
|
|
GtkStyleContext *bar_context;
|
|
GtkStyleContext *trough_context;
|
|
GtkStyleContext *progress_context;
|
|
|
|
/* This information is taken from the GtkProgressBar docs, see "CSS nodes" */
|
|
bar_context = get_style (NULL, "progressbar.horizontal");
|
|
trough_context = get_style (bar_context, "trough");
|
|
progress_context = get_style (trough_context, "progress.left");
|
|
|
|
*height = 0;
|
|
query_size (bar_context, NULL, height);
|
|
query_size (trough_context, NULL, height);
|
|
query_size (progress_context, NULL, height);
|
|
|
|
draw_style_common (bar_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (trough_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (progress_context, cr, x, y, position, *height, NULL, NULL, NULL, NULL);
|
|
|
|
g_object_unref (progress_context);
|
|
g_object_unref (trough_context);
|
|
g_object_unref (bar_context);
|
|
}
|
|
|
|
static void
|
|
draw_scale (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint position,
|
|
gint *height)
|
|
{
|
|
GtkStyleContext *scale_context;
|
|
GtkStyleContext *contents_context;
|
|
GtkStyleContext *trough_context;
|
|
GtkStyleContext *slider_context;
|
|
GtkStyleContext *highlight_context;
|
|
gint contents_x, contents_y, contents_width, contents_height;
|
|
gint trough_height, slider_height;
|
|
|
|
scale_context = get_style (NULL, "scale.horizontal");
|
|
contents_context = get_style (scale_context, "contents");
|
|
trough_context = get_style (contents_context, "trough");
|
|
slider_context = get_style (trough_context, "slider");
|
|
highlight_context = get_style (trough_context, "highlight.top");
|
|
|
|
*height = 0;
|
|
query_size (scale_context, NULL, height);
|
|
query_size (contents_context, NULL, height);
|
|
query_size (trough_context, NULL, height);
|
|
query_size (slider_context, NULL, height);
|
|
query_size (highlight_context, NULL, height);
|
|
|
|
draw_style_common (scale_context, cr, x, y, width, *height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
draw_style_common (contents_context, cr, contents_x, contents_y, contents_width, contents_height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
/* Scale trough defines its size querying slider and highlight */
|
|
trough_height = 0;
|
|
query_size (trough_context, NULL, &trough_height);
|
|
slider_height = 0;
|
|
query_size (slider_context, NULL, &slider_height);
|
|
query_size (highlight_context, NULL, &slider_height);
|
|
trough_height += slider_height;
|
|
draw_style_common (trough_context, cr, contents_x, contents_y, contents_width, trough_height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
draw_style_common (highlight_context, cr, contents_x, contents_y,
|
|
contents_width / 2, contents_height,
|
|
NULL, NULL, NULL, NULL);
|
|
draw_style_common (slider_context, cr, contents_x + position, contents_y, contents_height, contents_height,
|
|
NULL, NULL, NULL, NULL);
|
|
|
|
g_object_unref (scale_context);
|
|
g_object_unref (contents_context);
|
|
g_object_unref (trough_context);
|
|
g_object_unref (slider_context);
|
|
g_object_unref (highlight_context);
|
|
}
|
|
|
|
static void
|
|
draw_combobox (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gboolean has_entry,
|
|
gint *height)
|
|
{
|
|
GtkStyleContext *combo_context;
|
|
GtkStyleContext *box_context;
|
|
GtkStyleContext *button_context;
|
|
GtkStyleContext *button_box_context;
|
|
GtkStyleContext *entry_context;
|
|
GtkStyleContext *arrow_context;
|
|
gint contents_x, contents_y, contents_width, contents_height;
|
|
gint button_width;
|
|
gint arrow_width, arrow_height, arrow_size;
|
|
|
|
/* This information is taken from the GtkComboBox docs, see "CSS nodes" */
|
|
combo_context = get_style (NULL, "combobox:focus");
|
|
box_context = get_style (combo_context, "box.horizontal.linked");
|
|
if (has_entry)
|
|
{
|
|
const char *siblings[3] = { "entry.combo:focus", "button.combo" , NULL };
|
|
|
|
entry_context = get_style_with_siblings (box_context, "entry.combo:focus", siblings, 0);
|
|
button_context = get_style_with_siblings (box_context, "button.combo", siblings, 1);
|
|
}
|
|
else
|
|
{
|
|
const char *siblings[2] = { "button.combo" , NULL };
|
|
|
|
button_context = get_style_with_siblings (box_context, "button.combo", siblings, 0);
|
|
}
|
|
button_box_context = get_style (button_context, "box.horizontal");
|
|
arrow_context = get_style (button_box_context, "arrow");
|
|
|
|
*height = 0;
|
|
query_size (combo_context, NULL, height);
|
|
query_size (box_context, NULL, height);
|
|
if (has_entry)
|
|
query_size (entry_context, NULL, height);
|
|
query_size (button_context, NULL, height);
|
|
query_size (button_box_context, NULL, height);
|
|
query_size (arrow_context, NULL, height);
|
|
|
|
gtk_style_context_get (arrow_context, gtk_style_context_get_state (arrow_context),
|
|
"min-width", &arrow_width, "min-height", &arrow_height, NULL);
|
|
arrow_size = MIN (arrow_width, arrow_height);
|
|
|
|
draw_style_common (combo_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (box_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
if (has_entry)
|
|
{
|
|
button_width = *height;
|
|
draw_style_common (entry_context, cr, x, y, width - button_width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (button_context, cr, x + width - button_width, y, button_width, *height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
}
|
|
else
|
|
{
|
|
button_width = width;
|
|
draw_style_common (button_context, cr, x, y, width, *height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
}
|
|
|
|
draw_style_common (button_box_context, cr, contents_x, contents_y, contents_width, contents_height,
|
|
NULL, NULL, NULL, NULL);
|
|
draw_style_common (arrow_context, cr, contents_x, contents_y, contents_width, contents_height,
|
|
NULL, NULL, NULL, NULL);
|
|
gtk_render_arrow (arrow_context, cr, G_PI / 2,
|
|
contents_x + contents_width - arrow_size,
|
|
contents_y + (contents_height - arrow_size) / 2, arrow_size);
|
|
|
|
g_object_unref (arrow_context);
|
|
if (has_entry)
|
|
g_object_unref (entry_context);
|
|
g_object_unref (button_context);
|
|
g_object_unref (combo_context);
|
|
}
|
|
|
|
static void
|
|
draw_spinbutton (GtkWidget *widget,
|
|
cairo_t *cr,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint *height)
|
|
{
|
|
GtkStyleContext *spin_context;
|
|
GtkStyleContext *entry_context;
|
|
GtkStyleContext *up_context;
|
|
GtkStyleContext *down_context;
|
|
GtkIconTheme *icon_theme;
|
|
GtkIconInfo *icon_info;
|
|
GdkPixbuf *pixbuf;
|
|
gint icon_width, icon_height, icon_size;
|
|
gint button_width;
|
|
gint contents_x, contents_y, contents_width, contents_height;
|
|
|
|
/* This information is taken from the GtkSpinButton docs, see "CSS nodes" */
|
|
spin_context = get_style (NULL, "spinbutton.horizontal:focus");
|
|
entry_context = get_style (spin_context, "entry:focus");
|
|
up_context = get_style (spin_context, "button.up:focus:active");
|
|
down_context = get_style (spin_context, "button.down:focus");
|
|
|
|
*height = 0;
|
|
query_size (spin_context, NULL, height);
|
|
query_size (entry_context, NULL, height);
|
|
query_size (up_context, NULL, height);
|
|
query_size (down_context, NULL, height);
|
|
button_width = *height;
|
|
|
|
draw_style_common (spin_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
draw_style_common (entry_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
|
|
|
|
icon_theme = gtk_icon_theme_get_for_screen (gtk_widget_get_screen (widget));
|
|
|
|
gtk_style_context_get (up_context, gtk_style_context_get_state (up_context),
|
|
"min-width", &icon_width, "min-height", &icon_height, NULL);
|
|
icon_size = MIN (icon_width, icon_height);
|
|
icon_info = gtk_icon_theme_lookup_icon (icon_theme, "list-add-symbolic", icon_size, 0);
|
|
pixbuf = gtk_icon_info_load_symbolic_for_context (icon_info, up_context, NULL, NULL);
|
|
g_object_unref (icon_info);
|
|
draw_style_common (up_context, cr, x + width - button_width, y, button_width, *height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
gtk_render_icon (up_context, cr, pixbuf, contents_x, contents_y + (contents_height - icon_size) / 2);
|
|
g_object_unref (pixbuf);
|
|
|
|
|
|
gtk_style_context_get (down_context, gtk_style_context_get_state (down_context),
|
|
"min-width", &icon_width, "min-height", &icon_height, NULL);
|
|
icon_size = MIN (icon_width, icon_height);
|
|
icon_info = gtk_icon_theme_lookup_icon (icon_theme, "list-remove-symbolic", icon_size, 0);
|
|
pixbuf = gtk_icon_info_load_symbolic_for_context (icon_info, down_context, NULL, NULL);
|
|
g_object_unref (icon_info);
|
|
draw_style_common (down_context, cr, x + width - 2 * button_width, y, button_width, *height,
|
|
&contents_x, &contents_y, &contents_width, &contents_height);
|
|
gtk_render_icon (down_context, cr, pixbuf, contents_x, contents_y + (contents_height - icon_size) / 2);
|
|
g_object_unref (pixbuf);
|
|
|
|
g_object_unref (down_context);
|
|
g_object_unref (up_context);
|
|
g_object_unref (entry_context);
|
|
g_object_unref (spin_context);
|
|
}
|
|
|
|
static gboolean
|
|
draw_cb (GtkWidget *widget,
|
|
cairo_t *cr)
|
|
{
|
|
gint panewidth, width, height;
|
|
gint x, y;
|
|
|
|
width = gtk_widget_get_allocated_width (widget);
|
|
panewidth = width / 2;
|
|
height = gtk_widget_get_allocated_height (widget);
|
|
|
|
cairo_rectangle (cr, 0, 0, width, height);
|
|
cairo_set_source_rgb (cr, 0.9, 0.9, 0.9);
|
|
cairo_fill (cr);
|
|
|
|
x = y = 10;
|
|
draw_horizontal_scrollbar (widget, cr, x, y, panewidth - 20, 30, GTK_STATE_FLAG_NORMAL, &height);
|
|
y += height + 8;
|
|
draw_horizontal_scrollbar (widget, cr, x, y, panewidth - 20, 40, GTK_STATE_FLAG_PRELIGHT, &height);
|
|
y += height + 8;
|
|
draw_horizontal_scrollbar (widget, cr, x, y, panewidth - 20, 50, GTK_STATE_FLAG_ACTIVE|GTK_STATE_FLAG_PRELIGHT, &height);
|
|
|
|
y += height + 8;
|
|
draw_text (widget, cr, x, y, panewidth - 20, 20, "Not selected", GTK_STATE_FLAG_NORMAL);
|
|
y += 20 + 10;
|
|
draw_text (widget, cr, x, y, panewidth - 20, 20, "Selected", GTK_STATE_FLAG_SELECTED);
|
|
|
|
x = 10;
|
|
y += 20 + 10;
|
|
draw_check (widget, cr, x, y, GTK_STATE_FLAG_NORMAL, &width, &height);
|
|
x += width + 10;
|
|
draw_check (widget, cr, x, y, GTK_STATE_FLAG_CHECKED, &width, &height);
|
|
x += width + 10;
|
|
draw_radio (widget, cr, x, y, GTK_STATE_FLAG_NORMAL, &width, &height);
|
|
x += width + 10;
|
|
draw_radio (widget, cr, x, y, GTK_STATE_FLAG_CHECKED, &width, &height);
|
|
x = 10;
|
|
|
|
y += height + 10;
|
|
draw_progress (widget, cr, x, y, panewidth - 20, 50, &height);
|
|
|
|
y += height + 10;
|
|
draw_scale (widget, cr, x, y, panewidth - 20, 75, &height);
|
|
|
|
y += height + 20;
|
|
draw_notebook (widget, cr, x, y, panewidth - 20, 160);
|
|
|
|
/* Second column */
|
|
x += panewidth;
|
|
y = 10;
|
|
draw_menu (widget, cr, x, y, panewidth - 20, &height);
|
|
|
|
y += height + 10;
|
|
draw_menubar (widget, cr, x, y, panewidth - 20, &height);
|
|
|
|
y += height + 20;
|
|
draw_spinbutton (widget, cr, x, y, panewidth - 20, &height);
|
|
|
|
y += height + 30;
|
|
draw_combobox (widget, cr, x, y, panewidth - 20, FALSE, &height);
|
|
|
|
y += height + 10;
|
|
draw_combobox (widget, cr, 10 + panewidth, y, panewidth - 20, TRUE, &height);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
GtkWidget *
|
|
do_foreigndrawing (GtkWidget *do_widget)
|
|
{
|
|
static GtkWidget *window = NULL;
|
|
|
|
if (!window)
|
|
{
|
|
GtkWidget *box;
|
|
GtkWidget *da;
|
|
|
|
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
|
|
gtk_window_set_title (GTK_WINDOW (window), "Foreign drawing");
|
|
gtk_window_set_screen (GTK_WINDOW (window),
|
|
gtk_widget_get_screen (do_widget));
|
|
g_signal_connect (window, "destroy",
|
|
G_CALLBACK (gtk_widget_destroyed), &window);
|
|
|
|
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
|
|
gtk_container_add (GTK_CONTAINER (window), box);
|
|
da = gtk_drawing_area_new ();
|
|
gtk_widget_set_size_request (da, 400, 400);
|
|
gtk_widget_set_hexpand (da, TRUE);
|
|
gtk_widget_set_vexpand (da, TRUE);
|
|
gtk_widget_set_app_paintable (da, TRUE);
|
|
gtk_container_add (GTK_CONTAINER (box), da);
|
|
|
|
g_signal_connect (da, "draw", G_CALLBACK (draw_cb), NULL);
|
|
}
|
|
|
|
if (!gtk_widget_get_visible (window))
|
|
gtk_widget_show_all (window);
|
|
else
|
|
gtk_widget_destroy (window);
|
|
|
|
return window;
|
|
}
|