Add gtk_print_unix_dialog_set_manual_capabilities that controls what

2006-05-24  Alexander Larsson  <alexl@redhat.com>

	* gtk/gtk.symbols:
	* gtk/gtkprintunixdialog.[ch]:
	Add gtk_print_unix_dialog_set_manual_capabilities that controls
	what widgets to enable in the dialog depending on the apps
	capabilities.

	* gtk/gtkprintbackend.[ch]:
	* gtk/gtkprinter-private.h:
	* gtk/gtkprinter.c:
	* gtk/gtkprintjob.h:
	Add printer_get_capabilities to backend.
	Move some fallback calls to the printbackend base class.

	* gtk/gtkprintoperation-unix.c:
	Set manual capabilities

	* modules/printbackends/cups/gtkprintbackendcups.c:
	Implement get_capabilities

	* modules/printbackends/lpr/gtkprintbackendlpr.c:
	* modules/printbackends/pdf/gtkprintbackendpdf.c:
	Move some methods to baseclass.

9 files changed, 185 insertions, 36 deletions

diff --git a/gtk/gtk.symbols b/gtk/gtk.symbols
index 675103857c..d68fe751cb 100644
--- a/gtk/gtk.symbols
+++ b/gtk/gtk.symbols
@@ -2806,6 +2806,7 @@ gtk_print_unix_dialog_set_settings
 gtk_print_unix_dialog_get_settings
 gtk_print_unix_dialog_get_selected_printer
 gtk_print_unix_dialog_add_custom_tab
+gtk_print_unix_dialog_set_manual_capabilities
 #endif
 #endif
 #endif
diff --git a/gtk/gtkprintbackend.c b/gtk/gtkprintbackend.c
index 9bd1069a92..68c90981a3 100644
--- a/gtk/gtkprintbackend.c
+++ b/gtk/gtkprintbackend.c
@@ -303,6 +303,17 @@ gtk_print_backend_load_modules ()
 
 G_DEFINE_TYPE (GtkPrintBackend, gtk_print_backend, G_TYPE_OBJECT)
 
+static void                 fallback_printer_request_details  (GtkPrinter          *printer);
+static gboolean             fallback_printer_mark_conflicts   (GtkPrinter          *printer,
+							       GtkPrinterOptionSet *options);
+static void                 fallback_printer_get_hard_margins (GtkPrinter          *printer,
+							       double              *top,
+							       double              *bottom,
+							       double              *left,
+							       double              *right);
+static GList *              fallback_printer_list_papers      (GtkPrinter          *printer);
+static GtkPrintCapabilities fallback_printer_get_capabilities (GtkPrinter          *printer);
+  
 static void
 gtk_print_backend_class_init (GtkPrintBackendClass *class)
 {
@@ -313,8 +324,13 @@ gtk_print_backend_class_init (GtkPrintBackendClass *class)
   
   object_class->dispose = gtk_print_backend_dispose;
 
+  class->printer_request_details = fallback_printer_request_details;
+  class->printer_mark_conflicts = fallback_printer_mark_conflicts;
+  class->printer_get_hard_margins = fallback_printer_get_hard_margins;
+  class->printer_list_papers = fallback_printer_list_papers;
+  class->printer_get_capabilities = fallback_printer_get_capabilities;
+  
   g_type_class_add_private (class, sizeof (GtkPrintBackendPrivate));
-
   
   signals[PRINTER_LIST_CHANGED] =
     g_signal_new ("printer-list-changed",
@@ -392,6 +408,44 @@ gtk_print_backend_dispose (GObject *object)
 
 
 static void
+fallback_printer_request_details (GtkPrinter *printer)
+{
+}
+
+static gboolean
+fallback_printer_mark_conflicts (GtkPrinter *printer,
+				 GtkPrinterOptionSet *options)
+{
+  return FALSE;
+}
+
+static void
+fallback_printer_get_hard_margins (GtkPrinter *printer,
+				   double *top,
+				   double *bottom,
+				   double *left,
+				   double *right)
+{
+  *top = 0;
+  *bottom = 0;
+  *left = 0;
+  *right = 0;
+}
+
+static GList *
+fallback_printer_list_papers (GtkPrinter *printer)
+{
+  return NULL;
+}
+
+static GtkPrintCapabilities
+fallback_printer_get_capabilities (GtkPrinter *printer)
+{
+  return 0;
+}
+
+
+static void
 printer_hash_to_sorted_active_list (const gchar *key,
                                     gpointer value,
                                     GList **out_list)
diff --git a/gtk/gtkprintbackend.h b/gtk/gtkprintbackend.h
index 7f688ae0fc..e8d9711ea8 100644
--- a/gtk/gtkprintbackend.h
+++ b/gtk/gtkprintbackend.h
@@ -103,6 +103,7 @@ struct _GtkPrintBackendClass
 							      double     *bottom,
 							      double     *left,
 							      double     *right);
+  GtkPrintCapabilities  (*printer_get_capabilities)          (GtkPrinter *printer);
 
   /* Signals */
   void (*printer_list_changed)   (GtkPrintBackend *backend);
diff --git a/gtk/gtkprinter-private.h b/gtk/gtkprinter-private.h
index c6757d0386..798ec0835e 100644
--- a/gtk/gtkprinter-private.h
+++ b/gtk/gtkprinter-private.h
@@ -55,6 +55,7 @@ void                 _gtk_printer_get_hard_margins          (GtkPrinter
 							     gdouble             *left,
 							     gdouble             *right);
 GHashTable *         _gtk_printer_get_custom_widgets        (GtkPrinter          *printer);
+GtkPrintCapabilities _gtk_printer_get_capabilities          (GtkPrinter          *printer);
 
 
 /* GtkPrintJob private methods: */
diff --git a/gtk/gtkprinter.c b/gtk/gtkprinter.c
index 429d577b97..3367abe206 100644
--- a/gtk/gtkprinter.c
+++ b/gtk/gtkprinter.c
@@ -726,6 +726,14 @@ _gtk_printer_get_hard_margins (GtkPrinter *printer,
   backend_class->printer_get_hard_margins (printer, top, bottom, left, right);
 }
 
+GtkPrintCapabilities
+_gtk_printer_get_capabilities (GtkPrinter *printer)
+{
+  GtkPrintBackendClass *backend_class = GTK_PRINT_BACKEND_GET_CLASS (printer->priv->backend);
+
+  return backend_class->printer_get_capabilities (printer);
+}
+
 gint
 gtk_printer_compare (GtkPrinter *a, GtkPrinter *b)
 {
diff --git a/gtk/gtkprintjob.h b/gtk/gtkprintjob.h
index 328ddb411c..96b668eb22 100644
--- a/gtk/gtkprintjob.h
+++ b/gtk/gtkprintjob.h
@@ -34,6 +34,14 @@ G_BEGIN_DECLS
 #define GTK_IS_PRINT_JOB_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PRINT_JOB))
 #define GTK_PRINT_JOB_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PRINT_JOB, GtkPrintJobClass))
 
+typedef enum
+{
+  GTK_PRINT_CAPABILITY_PAGE_SET = 1 << 0,
+  GTK_PRINT_CAPABILITY_COPIES   = 1 << 1,
+  GTK_PRINT_CAPABILITY_COLLATE  = 1 << 2,
+  GTK_PRINT_CAPABILITY_REVERSE  = 1 << 3,
+  GTK_PRINT_CAPABILITY_SCALE    = 1 << 4
+} GtkPrintCapabilities;
 
 typedef struct _GtkPrintJob          GtkPrintJob;
 typedef struct _GtkPrintJobClass     GtkPrintJobClass;
@@ -57,12 +65,13 @@ struct _GtkPrintJob
   GtkPrintPages print_pages;
   GtkPageRange *page_ranges;
   int num_page_ranges;
+  gboolean rotate_to_orientation;
+  
   GtkPageSet page_set;
   int num_copies;
   gboolean collate;
   gboolean reverse;
   double scale;
-  gboolean rotate_to_orientation;
 };
 
 struct _GtkPrintJobClass
diff --git a/gtk/gtkprintoperation-unix.c b/gtk/gtkprintoperation-unix.c
index cc48bdcb60..77e98c4118 100644
--- a/gtk/gtkprintoperation-unix.c
+++ b/gtk/gtkprintoperation-unix.c
@@ -183,6 +183,13 @@ get_print_dialog (GtkPrintOperation *op,
 
   pd = gtk_print_unix_dialog_new (NULL, parent);
 
+  gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
+						 GTK_PRINT_CAPABILITY_PAGE_SET |
+						 GTK_PRINT_CAPABILITY_COPIES |
+						 GTK_PRINT_CAPABILITY_COLLATE |
+						 GTK_PRINT_CAPABILITY_REVERSE |
+						 GTK_PRINT_CAPABILITY_SCALE);
+
   if (priv->print_settings)
     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 					priv->print_settings);
diff --git a/gtk/gtkprintunixdialog.c b/gtk/gtkprintunixdialog.c
index 5988e71dc4..641dfeb7aa 100644
--- a/gtk/gtkprintunixdialog.c
+++ b/gtk/gtkprintunixdialog.c
@@ -56,32 +56,36 @@
 #define GTK_PRINT_UNIX_DIALOG_GET_PRIVATE(o)  \
    (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_PRINT_UNIX_DIALOG, GtkPrintUnixDialogPrivate))
 
-static void gtk_print_unix_dialog_destroy      (GtkPrintUnixDialog *dialog);
-static void gtk_print_unix_dialog_finalize     (GObject            *object);
-static void gtk_print_unix_dialog_set_property (GObject            *object,
-						guint               prop_id,
-						const GValue       *value,
-						GParamSpec         *pspec);
-static void gtk_print_unix_dialog_get_property (GObject            *object,
-						guint               prop_id,
-						GValue             *value,
-						GParamSpec         *pspec);
-static void gtk_print_unix_dialog_style_set    (GtkWidget          *widget,
-						GtkStyle           *previous_style);
-static void populate_dialog                    (GtkPrintUnixDialog *dialog);
-static void unschedule_idle_mark_conflicts     (GtkPrintUnixDialog *dialog);
-static void selected_printer_changed           (GtkTreeSelection   *selection,
-						GtkPrintUnixDialog *dialog);
-static void clear_per_printer_ui               (GtkPrintUnixDialog *dialog);
-static void printer_added_cb                   (GtkPrintBackend    *backend,
-						GtkPrinter         *printer,
-						GtkPrintUnixDialog *dialog);
-static void printer_removed_cb                 (GtkPrintBackend    *backend,
-						GtkPrinter         *printer,
-						GtkPrintUnixDialog *dialog);
-static void printer_status_cb                  (GtkPrintBackend    *backend,
-						GtkPrinter         *printer,
-						GtkPrintUnixDialog *dialog);
+static void     gtk_print_unix_dialog_destroy      (GtkPrintUnixDialog *dialog);
+static void     gtk_print_unix_dialog_finalize     (GObject            *object);
+static void     gtk_print_unix_dialog_set_property (GObject            *object,
+						    guint               prop_id,
+						    const GValue       *value,
+						    GParamSpec         *pspec);
+static void     gtk_print_unix_dialog_get_property (GObject            *object,
+						    guint               prop_id,
+						    GValue             *value,
+						    GParamSpec         *pspec);
+static void     gtk_print_unix_dialog_style_set    (GtkWidget          *widget,
+						    GtkStyle           *previous_style);
+static void     populate_dialog                    (GtkPrintUnixDialog *dialog);
+static void     unschedule_idle_mark_conflicts     (GtkPrintUnixDialog *dialog);
+static void     selected_printer_changed           (GtkTreeSelection   *selection,
+						    GtkPrintUnixDialog *dialog);
+static void     clear_per_printer_ui               (GtkPrintUnixDialog *dialog);
+static void     printer_added_cb                   (GtkPrintBackend    *backend,
+						    GtkPrinter         *printer,
+						    GtkPrintUnixDialog *dialog);
+static void     printer_removed_cb                 (GtkPrintBackend    *backend,
+						    GtkPrinter         *printer,
+						    GtkPrintUnixDialog *dialog);
+static void     printer_status_cb                  (GtkPrintBackend    *backend,
+						    GtkPrinter         *printer,
+						    GtkPrintUnixDialog *dialog);
+static void     update_collate_icon                (GtkToggleButton    *toggle_button,
+						    GtkPrintUnixDialog *dialog);
+static gboolean dialog_get_collate                 (GtkPrintUnixDialog *dialog);
+static gboolean dialog_get_reverse                 (GtkPrintUnixDialog *dialog);
 
 enum {
   PROP_0,
@@ -108,6 +112,9 @@ struct GtkPrintUnixDialogPrivate
   GtkWidget *notebook;
 
   GtkWidget *printer_treeview;
+
+  GtkPrintCapabilities manual_capabilities;
+  GtkPrintCapabilities printer_capabilities;
   
   GtkTreeModel *printer_list;
   GtkTreeModelFilter *printer_list_filter;
@@ -1004,6 +1011,28 @@ update_dialog_from_settings (GtkPrintUnixDialog *dialog)
 }
 
 static void
+update_dialog_from_capabilities (GtkPrintUnixDialog *dialog)
+{
+  GtkPrintCapabilities caps;
+  GtkPrintUnixDialogPrivate *priv = dialog->priv;
+
+  caps = priv->manual_capabilities | priv->printer_capabilities;
+
+  gtk_widget_set_sensitive (priv->page_set_combo,
+			    caps & GTK_PRINT_CAPABILITY_PAGE_SET);
+  gtk_widget_set_sensitive (priv->copies_spin,
+			    caps & GTK_PRINT_CAPABILITY_COPIES);
+  gtk_widget_set_sensitive (priv->collate_check,
+			    caps & GTK_PRINT_CAPABILITY_COLLATE);
+  gtk_widget_set_sensitive (priv->reverse_check,
+			    caps & GTK_PRINT_CAPABILITY_REVERSE);
+  gtk_widget_set_sensitive (priv->scale_spin,
+			    caps & GTK_PRINT_CAPABILITY_PAGE_SET);
+
+  update_collate_icon (NULL, dialog);
+}
+
+static void
 mark_conflicts (GtkPrintUnixDialog *dialog)
 {
   GtkPrintUnixDialogPrivate *priv = dialog->priv;
@@ -1215,11 +1244,14 @@ selected_printer_changed (GtkTreeSelection   *selection,
       g_object_unref (priv->current_printer);
     }
 
+  priv->printer_capabilities = 0;
+  
   gtk_dialog_set_response_sensitive (GTK_DIALOG (dialog), GTK_RESPONSE_OK, TRUE);
   priv->current_printer = printer;
 
   if (printer != NULL)
     {
+      priv->printer_capabilities = _gtk_printer_get_capabilities (printer);
       priv->options = _gtk_printer_get_options (printer, priv->initial_settings,
 							priv->page_setup);
   
@@ -1228,7 +1260,9 @@ selected_printer_changed (GtkTreeSelection   *selection,
     }
 
   update_dialog_from_settings (dialog);
+  update_dialog_from_capabilities (dialog);
 }
+
 static void
 update_collate_icon (GtkToggleButton    *toggle_button,
 		     GtkPrintUnixDialog *dialog)
@@ -1281,7 +1315,6 @@ draw_collate_cb (GtkWidget	    *widget,
 		 GdkEventExpose     *event,
 		 GtkPrintUnixDialog *dialog)
 {
-  GtkPrintUnixDialogPrivate *priv = dialog->priv;
   GtkSettings *settings;
   cairo_t *cr;
   gint size;
@@ -1289,8 +1322,8 @@ draw_collate_cb (GtkWidget	    *widget,
   gboolean collate, reverse, rtl;
   gint text_x;
 
-  collate = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->collate_check));
-  reverse = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->reverse_check));
+  collate = dialog_get_collate (dialog);
+  reverse = dialog_get_reverse (dialog);
   rtl = (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL);
 
   settings = gtk_widget_get_settings (widget);
@@ -1648,7 +1681,10 @@ dialog_set_print_pages (GtkPrintUnixDialog *dialog, GtkPrintPages pages)
 static gdouble
 dialog_get_scale (GtkPrintUnixDialog *dialog)
 {
-  return gtk_spin_button_get_value (GTK_SPIN_BUTTON (dialog->priv->scale_spin));
+  if (GTK_WIDGET_IS_SENSITIVE (dialog->priv->scale_spin))
+    return gtk_spin_button_get_value (GTK_SPIN_BUTTON (dialog->priv->scale_spin));
+  else
+    return 100.0;
 }
 
 static void
@@ -1661,7 +1697,10 @@ dialog_set_scale (GtkPrintUnixDialog *dialog,
 static GtkPageSet
 dialog_get_page_set (GtkPrintUnixDialog *dialog)
 {
-  return (GtkPageSet)gtk_combo_box_get_active (GTK_COMBO_BOX (dialog->priv->page_set_combo));
+  if (GTK_WIDGET_IS_SENSITIVE (dialog->priv->page_set_combo))
+    return (GtkPageSet)gtk_combo_box_get_active (GTK_COMBO_BOX (dialog->priv->page_set_combo));
+  else
+    return GTK_PAGE_SET_ALL;
 }
 
 static void
@@ -1675,7 +1714,9 @@ dialog_set_page_set (GtkPrintUnixDialog *dialog,
 static gint
 dialog_get_n_copies (GtkPrintUnixDialog *dialog)
 {
-  return gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (dialog->priv->copies_spin));
+  if (GTK_WIDGET_IS_SENSITIVE (dialog->priv->copies_spin))
+    return gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (dialog->priv->copies_spin));
+  return 1;
 }
 
 static void
@@ -1689,7 +1730,9 @@ dialog_set_n_copies (GtkPrintUnixDialog *dialog,
 static gboolean
 dialog_get_collate (GtkPrintUnixDialog *dialog)
 {
-  return gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (dialog->priv->collate_check));
+  if (GTK_WIDGET_IS_SENSITIVE (dialog->priv->collate_check))
+    return gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (dialog->priv->collate_check));
+  return FALSE;
 }
 
 static void
@@ -1703,7 +1746,9 @@ dialog_set_collate (GtkPrintUnixDialog *dialog,
 static gboolean
 dialog_get_reverse (GtkPrintUnixDialog *dialog)
 {
-  return gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (dialog->priv->reverse_check));
+  if (GTK_WIDGET_IS_SENSITIVE (dialog->priv->reverse_check))
+    return gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (dialog->priv->reverse_check));
+  return FALSE;
 }
 
 static void
@@ -2648,6 +2693,26 @@ gtk_print_unix_dialog_add_custom_tab (GtkPrintUnixDialog *dialog,
   gtk_widget_show (tab_label);
 }
 
+/**
+ * gtk_print_unix_dialog_set_manual_capabilities:
+ * @dialog: a #GtkPrintUnixDialog
+ * @capabilites: the printing capabilities of your application
+ *
+ * This lets you specify the printing capabilities your application
+ * supports. For instance, if you can handle scaling the output then
+ * you pass #GTK_PRINT_CAPABILITY_SCALE. If you don't pass that, then
+ * the dialog will only let you select the scale if the printing
+ * system automatically handles scaling.
+ *
+ * Since: 2.10
+ */
+void
+gtk_print_unix_dialog_set_manual_capabilities (GtkPrintUnixDialog *dialog,
+					       GtkPrintCapabilities capabilities)
+{
+  dialog->priv->manual_capabilities = capabilities;
+  update_dialog_from_capabilities (dialog);
+}
 
 #define __GTK_PRINT_UNIX_DIALOG_C__
 #include "gtkaliasdef.c"
diff --git a/gtk/gtkprintunixdialog.h b/gtk/gtkprintunixdialog.h
index 46a925e946..b6ad921a4e 100644
--- a/gtk/gtkprintunixdialog.h
+++ b/gtk/gtkprintunixdialog.h
@@ -21,6 +21,7 @@
 
 #include <gtk/gtkdialog.h>
 #include <gtk/gtkprinter.h>
+#include <gtk/gtkprintjob.h>
 #include <gtk/gtkprintsettings.h>
 #include <gtk/gtkpagesetup.h>
 
@@ -77,6 +78,8 @@ GtkPrinter *      gtk_print_unix_dialog_get_selected_printer (GtkPrintUnixDialog
 void              gtk_print_unix_dialog_add_custom_tab       (GtkPrintUnixDialog *dialog,
 							      GtkWidget          *child,
 							      GtkWidget          *tab_label);
+void              gtk_print_unix_dialog_set_manual_capabilities (GtkPrintUnixDialog *dialog,
+								 GtkPrintCapabilities capabilities);
 
 G_END_DECLS