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Add gtk_printer_get_hard_margins_for_paper_size

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to retreive paper size specific hard margins and use this
to set the hard margins in the print context.
(modified by Marek Kasik <mkasik@redhat.com>)

https://bugzilla.gnome.org/show_bug.cgi?id=686109
This commit is contained in:
Adrian Johnson 2018-04-12 11:31:37 +02:00 committed by Marek Kasik
parent 9774b9fabd
commit b0bb7f3da4
7 changed files with 113 additions and 2 deletions
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1
docs/reference/gtk/gtk4-sections.txt
View File

@ -5278,6 +5278,7 @@ gtk_printer_request_details
gtk_printer_get_capabilities
gtk_printer_get_default_page_size
gtk_printer_get_hard_margins
gtk_printer_get_hard_margins_for_paper_size
GtkPrinterFunc
gtk_enumerate_printers

18
gtk/gtkprintbackend.c
View File

@ -186,6 +186,12 @@ static gboolean fallback_printer_get_hard_margins (GtkPrinter
gdouble *bottom,
gdouble *left,
gdouble *right);
static gboolean fallback_printer_get_hard_margins_for_paper_size (GtkPrinter *printer,
GtkPaperSize *paper_size,
gdouble *top,
gdouble *bottom,
gdouble *left,
gdouble *right);
static GList * fallback_printer_list_papers (GtkPrinter *printer);
static GtkPageSetup * fallback_printer_get_default_page_size (GtkPrinter *printer);
static GtkPrintCapabilities fallback_printer_get_capabilities (GtkPrinter *printer);
@ -252,6 +258,7 @@ gtk_print_backend_class_init (GtkPrintBackendClass *class)
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_get_hard_margins_for_paper_size = fallback_printer_get_hard_margins_for_paper_size;
class->printer_list_papers = fallback_printer_list_papers;
class->printer_get_default_page_size = fallback_printer_get_default_page_size;
class->printer_get_capabilities = fallback_printer_get_capabilities;
@ -375,6 +382,17 @@ fallback_printer_get_hard_margins (GtkPrinter *printer,
return FALSE;
}
static gboolean
fallback_printer_get_hard_margins_for_paper_size (GtkPrinter *printer,
GtkPaperSize *paper_size,
gdouble *top,
gdouble *bottom,
gdouble *left,
gdouble *right)
{
return FALSE;
}
static GList *
fallback_printer_list_papers (GtkPrinter *printer)
{

8
gtk/gtkprintbackend.h
View File

@ -133,11 +133,17 @@ struct _GtkPrintBackendClass
gchar **auth_info,
gboolean store_auth_info);
gboolean (*printer_get_hard_margins_for_paper_size) (GtkPrinter *printer,
GtkPaperSize *paper_size,
gdouble *top,
gdouble *bottom,
gdouble *left,
gdouble *right);
/* Padding for future expansion */
void (*_gtk_reserved1) (void);
void (*_gtk_reserved2) (void);
void (*_gtk_reserved3) (void);
void (*_gtk_reserved4) (void);
};
#define GTK_PRINT_BACKEND_EXTENSION_POINT_NAME "gtk-print-backend"

31
gtk/gtkprinter.c
View File

@ -969,6 +969,37 @@ gtk_printer_get_hard_margins (GtkPrinter *printer,
return backend_class->printer_get_hard_margins (printer, top, bottom, left, right);
}
/**
* gtk_printer_get_hard_margins_for_paper_size:
* @printer: a #GtkPrinter
* @paper_size: a #GtkPaperSize
* @top: (out): a location to store the top margin in
* @bottom: (out): a location to store the bottom margin in
* @left: (out): a location to store the left margin in
* @right: (out): a location to store the right margin in
*
* Retrieve the hard margins of @printer for @paper_size, i.e. the
* margins that define the area at the borders of the paper that the
* printer cannot print to.
*
* Note: This will not succeed unless the printer's details are available,
* see gtk_printer_has_details() and gtk_printer_request_details().
*
* Return value: %TRUE iff the hard margins were retrieved
*/
gboolean
gtk_printer_get_hard_margins_for_paper_size (GtkPrinter *printer,
GtkPaperSize *paper_size,
gdouble *top,
gdouble *bottom,
gdouble *left,
gdouble *right)
{
GtkPrintBackendClass *backend_class = GTK_PRINT_BACKEND_GET_CLASS (printer->priv->backend);
return backend_class->printer_get_hard_margins_for_paper_size (printer, paper_size, top, bottom, left, right);
}
/**
* gtk_printer_get_capabilities:
* @printer: a #GtkPrinter

6
gtk/gtkprinter.h
View File

@ -164,6 +164,12 @@ gboolean gtk_printer_get_hard_margins (GtkPrinter *pr
gdouble *bottom,
gdouble *left,
gdouble *right);
gboolean gtk_printer_get_hard_margins_for_paper_size (GtkPrinter *printer,
GtkPaperSize *paper_size,
gdouble *top,
gdouble *bottom,
gdouble *left,
gdouble *right);
/**
* GtkPrinterFunc:

3
gtk/gtkprintoperation-unix.c
View File

@ -531,7 +531,8 @@ finish_print (PrintResponseData *rdata,
if (gtk_print_settings_get_number_up (settings) < 2)
{
if (printer && gtk_printer_get_hard_margins (printer, &top, &bottom, &left, &right))
if (printer && (gtk_printer_get_hard_margins_for_paper_size (printer, gtk_page_setup_get_paper_size (page_setup), &top, &bottom, &left, &right) ||
gtk_printer_get_hard_margins (printer, &top, &bottom, &left, &right)))
_gtk_print_context_set_hard_margins (priv->print_context, top, bottom, left, right);
}
else

48
modules/printbackends/gtkprintbackendcups.c
View File

@ -193,6 +193,12 @@ static gboolean cups_printer_get_hard_margins (GtkPrinter
gdouble *bottom,
gdouble *left,
gdouble *right);
static gboolean cups_printer_get_hard_margins_for_paper_size (GtkPrinter *printer,
GtkPaperSize *paper_size,
gdouble *top,
gdouble *bottom,
gdouble *left,
gdouble *right);
static GtkPrintCapabilities cups_printer_get_capabilities (GtkPrinter *printer);
static void set_option_from_settings (GtkPrinterOption *option,
GtkPrintSettings *setting);
@ -355,6 +361,7 @@ gtk_print_backend_cups_class_init (GtkPrintBackendCupsClass *class)
backend_class->printer_list_papers = cups_printer_list_papers;
backend_class->printer_get_default_page_size = cups_printer_get_default_page_size;
backend_class->printer_get_hard_margins = cups_printer_get_hard_margins;
backend_class->printer_get_hard_margins_for_paper_size = cups_printer_get_hard_margins_for_paper_size;
backend_class->printer_get_capabilities = cups_printer_get_capabilities;
backend_class->set_password = gtk_print_backend_cups_set_password;
}
@ -6697,6 +6704,47 @@ cups_printer_get_hard_margins (GtkPrinter *printer,
return result;
}
static gboolean
cups_printer_get_hard_margins_for_paper_size (GtkPrinter *printer,
GtkPaperSize *paper_size,
gdouble *top,
gdouble *bottom,
gdouble *left,
gdouble *right)
{
ppd_file_t *ppd_file;
ppd_size_t *size;
const gchar *paper_name;
int i;
ppd_file = gtk_printer_cups_get_ppd (GTK_PRINTER_CUPS (printer));
if (ppd_file == NULL)
return FALSE;
paper_name = gtk_paper_size_get_ppd_name (paper_size);
for (i = 0; i < ppd_file->num_sizes; i++)
{
size = &ppd_file->sizes[i];
if (g_strcmp0(size->name, paper_name) == 0)
{
*top = size->length - size->top;
*bottom = size->bottom;
*left = size->left;
*right = size->width - size->right;
return TRUE;
}
}
/* Custom size */
*left = ppd_file->custom_margins[0];
*bottom = ppd_file->custom_margins[1];
*right = ppd_file->custom_margins[2];
*top = ppd_file->custom_margins[3];
return TRUE;
}
static GtkPrintCapabilities
cups_printer_get_capabilities (GtkPrinter *printer)
{