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gimp/plug-ins/print/print.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 "config.h"
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include <glib/gstdio.h>
#include "print.h"
#include "print-settings.h"
#include "print-page-layout.h"
#include "print-draw-page.h"
#include "libgimp/stdplugins-intl.h"
#define PRINT_PROC_NAME "file-print-gtk"
#define PLUG_IN_BINARY "print"
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gboolean print_image (gint32 image_ID,
gint32 drawable_ID,
gboolean interactive);
static void begin_print (GtkPrintOperation *operation,
GtkPrintContext *context,
gpointer user_data);
static void end_print (GtkPrintOperation *operation,
GtkPrintContext *context,
gpointer user_data);
static void draw_page (GtkPrintOperation *print,
GtkPrintContext *context,
int page_nr,
gpointer user_data);
static GtkWidget * create_custom_widget (GtkPrintOperation *operation,
gpointer user_data);
static void custom_widget_apply (GtkPrintOperation *operation,
GtkWidget *widget,
gpointer user_data);
static gboolean print_preview (GtkPrintOperation *operation,
GtkPrintOperationPreview *preview,
GtkPrintContext *context,
GtkWindow *parent,
gpointer user_data);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static const GimpParamDef print_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Drawable to print" }
};
gimp_install_procedure (PRINT_PROC_NAME,
N_("Print the image"),
"Print the image using the GTK+ Print API.",
"Bill Skaggs <weskaggs@primate.ucdavis.edu>",
"Bill Skaggs <weskaggs@primate.ucdavis.edu>",
"2006",
N_("_Print..."),
"GRAY, RGB*",
GIMP_PLUGIN,
G_N_ELEMENTS (print_args), 0,
print_args, NULL);
gimp_plugin_menu_register (PRINT_PROC_NAME, "<Image>/File/Send");
gimp_plugin_icon_register (PRINT_PROC_NAME, GIMP_ICON_TYPE_STOCK_ID,
(const guint8 *) GTK_STOCK_PRINT);
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
gint32 image_ID;
gint32 drawable_ID;
run_mode = param[0].data.d_int32;
INIT_I18N ();
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
if (strcmp (name, PRINT_PROC_NAME) == 0)
{
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_ui_init (PLUG_IN_BINARY, FALSE);
if (! print_image (image_ID, drawable_ID,
run_mode == GIMP_RUN_INTERACTIVE))
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
values[0].data.d_status = status;
}
static gboolean
print_image (gint32 image_ID,
gint32 drawable_ID,
gboolean interactive)
{
GtkPrintOperation *operation = gtk_print_operation_new ();
GError *error = NULL;
PrintData *data;
data = g_new0 (PrintData, 1);
data->num_pages = 1;
data->image_id = image_ID;
data->drawable_id = drawable_ID;
data->operation = operation;
data->print_size_changed = FALSE;
gimp_image_get_resolution (data->image_id, &data->xres, &data->yres);
load_print_settings (data);
g_signal_connect (operation, "begin-print", G_CALLBACK (begin_print), data);
g_signal_connect (operation, "draw-page", G_CALLBACK (draw_page), data);
g_signal_connect (operation, "end-print", G_CALLBACK (end_print), data);
if (interactive)
{
GtkPrintOperationResult res;
g_signal_connect (operation, "create-custom-widget",
G_CALLBACK (create_custom_widget), data);
g_signal_connect (operation, "custom-widget-apply",
G_CALLBACK (custom_widget_apply), data);
g_signal_connect (operation, "preview",
G_CALLBACK (print_preview), data);
gtk_print_operation_set_custom_tab_label (operation, _("Layout"));
res = gtk_print_operation_run (operation,
GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
NULL, &error);
if (res == GTK_PRINT_OPERATION_RESULT_APPLY ||
res == GTK_PRINT_OPERATION_RESULT_IN_PROGRESS)
{
save_print_settings (data);
}
}
else
gtk_print_operation_run (operation,
GTK_PRINT_OPERATION_ACTION_PRINT,
NULL, &error);
g_object_unref (operation);
if (error)
g_message (error->message);
return TRUE;
}
static void
begin_print (GtkPrintOperation *operation,
GtkPrintContext *context,
gpointer user_data)
{
PrintData *data = (PrintData *) user_data;
data->num_pages = 1;
gtk_print_operation_set_n_pages (operation, data->num_pages);
}
static void
end_print (GtkPrintOperation *operation,
GtkPrintContext *context,
gpointer user_data)
{
GtkPrintSettings *settings;
settings = gtk_print_operation_get_print_settings (operation);
}
static void
draw_page (GtkPrintOperation *operation,
GtkPrintContext *context,
int page_nr,
gpointer user_data)
{
PrintData *data = user_data;
draw_page_cairo (context, data);
}
/*
* This callback creates a "custom" widget that gets inserted into the
* print operation dialog.
*/
static GtkWidget *
create_custom_widget (GtkPrintOperation *operation,
gpointer user_data)
{
GtkWidget *vbox;
PrintData *data = user_data;
vbox = print_page_layout_gui (data);
return vbox;
}
/*
* This function is called once before printing begins, and should be
* used to apply any changes that have been made to the contents of the
* custom widget, since it is not guaranteed to be around later. This
* function is guaranteed to be called at least once, even if printing
* is cancelled.
*/
static void
custom_widget_apply (GtkPrintOperation *operation,
GtkWidget *widget,
gpointer user_data)
{
PrintData *data = user_data;
if (data->print_size_changed)
{
gimp_image_undo_group_start (data->image_id);
gimp_image_set_resolution (data->image_id,
data->xres, data->yres);
gimp_image_set_unit (data->image_id, data->unit);
gimp_image_undo_group_end (data->image_id);
}
}
#define PREVIEW_SCALE 72
static gboolean
print_preview (GtkPrintOperation *operation,
GtkPrintOperationPreview *preview,
GtkPrintContext *context,
GtkWindow *parent,
gpointer user_data)
{
PrintData *data = user_data;
GtkPageSetup *page_setup = gtk_print_context_get_page_setup (context);
GtkPaperSize *paper_size;
gdouble paper_width;
gdouble paper_height;
gdouble top_margin;
gdouble bottom_margin;
gdouble left_margin;
gdouble right_margin;
gint preview_width;
gint preview_height;
cairo_t *cr;
cairo_surface_t *surface;
GtkPageOrientation orientation;
paper_size = gtk_page_setup_get_paper_size (page_setup);
paper_width = gtk_paper_size_get_width (paper_size, GTK_UNIT_INCH);
paper_height = gtk_paper_size_get_height (paper_size, GTK_UNIT_INCH);
top_margin = gtk_page_setup_get_top_margin (page_setup, GTK_UNIT_INCH);
bottom_margin = gtk_page_setup_get_bottom_margin (page_setup, GTK_UNIT_INCH);
left_margin = gtk_page_setup_get_left_margin (page_setup, GTK_UNIT_INCH);
right_margin = gtk_page_setup_get_right_margin (page_setup, GTK_UNIT_INCH);
/* the print context does not have the page orientation, it is transformed */
orientation = data->orientation;
if (orientation == GTK_PAGE_ORIENTATION_PORTRAIT ||
orientation == GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT)
{
preview_width = PREVIEW_SCALE * paper_width;
preview_height = PREVIEW_SCALE * paper_height;
}
else
{
preview_width = PREVIEW_SCALE * paper_height;
preview_height = PREVIEW_SCALE * paper_width;
}
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
preview_width, preview_height);
if (CAIRO_STATUS_SUCCESS != cairo_surface_status (surface))
{
g_message ("Unable to create preview (not enough memory?)");
return TRUE;
}
cr = cairo_create (surface);
gtk_print_context_set_cairo_context (context, cr, PREVIEW_SCALE, PREVIEW_SCALE);
/* fill page with white */
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_new_path (cr);
cairo_rectangle (cr, 0, 0, preview_width, preview_height);
cairo_fill (cr);
cairo_translate (cr, left_margin * PREVIEW_SCALE, right_margin * PREVIEW_SCALE);
if (draw_page_cairo (context, data))
{
cairo_status_t status;
gchar *fname;
fname = gimp_temp_name ("png");
status = cairo_surface_write_to_png (surface, fname);
cairo_destroy (cr);
cairo_surface_destroy (surface);
if (status == CAIRO_STATUS_SUCCESS)
{
GtkWidget *dialog;
GtkWidget *image;
dialog = gtk_dialog_new ();
gtk_window_set_title (GTK_WINDOW (dialog), _("Print Preview"));
image = gtk_image_new_from_file (fname);
g_unlink (fname);
g_free (fname);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), image, FALSE, FALSE, 0);
gtk_widget_show (image);
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
}
return TRUE;
}
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