print.c

Gqview,Linux下基于GTK+库写成的轻量级而能丰富的图像浏览程序。

	if (!success)
		{
		print_job_close(pw, TRUE);
		return;
		}

	if (pw->proof_point) pw->proof_point = pw->proof_point->next;

	pw->proof_position++;
	if (pw->proof_position >= pw->proof_columns * pw->proof_rows)
		{
		if (pw->job_format == RENDER_FORMAT_PREVIEW)
			{
			print_job_done(pw);
			return;
			}

		if (!print_job_page_done(pw))
			{
			print_job_close(pw, TRUE);
			return;
			}

		pw->proof_position = 0;
		pw->job_page++;
		if (print_job_render_proof(pw))
			{
			if (!print_job_page_new(pw))
				{
				print_job_close(pw, TRUE);
				return;
				}
			print_job_status(pw);
			}
		else
			{
			print_job_done(pw);
			}
		}
	else
		{
		if (print_job_render_proof(pw))
			{
			print_job_status(pw);
			}
		else
			{
			if (print_job_page_done(pw))
				{
				print_job_done(pw);
				}
			else
				{
				print_job_close(pw, TRUE);
				}
			}
		}
}

static gint print_job_render_proof(PrintWindow *pw)
{
	gchar *path = NULL;

	if (pw->proof_columns < 1 || pw->proof_rows < 1) return FALSE;

	if (!pw->proof_point && pw->proof_position == 0 && pw->source == PRINT_SOURCE_IMAGE)
		{
		path = pw->source_path;
		}
	else if (pw->proof_point &&
		 pw->proof_position < pw->proof_columns * pw->proof_rows)
		{
		path = pw->proof_point->data;
		}

	if (!path) return FALSE;

	image_loader_free(pw->job_loader);
	pw->job_loader = image_loader_new(path);
	if (!image_loader_start(pw->job_loader, print_job_render_proof_loader_done, pw))
		{
		image_loader_free(pw->job_loader);
		pw->job_loader = NULL;
		}

	return TRUE;
}

static void print_job_render(PrintWindow *pw)
{
	gdouble proof_w, proof_h;
	gint finished;

	pw->proof_position = 0;

	switch (pw->source)
		{
		case PRINT_SOURCE_SELECTION:
			pw->proof_point = pw->source_selection;
			break;
		case PRINT_SOURCE_ALL:
			pw->proof_point = pw->source_list;
			break;
		case PRINT_SOURCE_IMAGE:
		default:
			pw->proof_point = NULL;
			break;
		}

	print_proof_size(pw, &proof_w, &proof_h);
	pw->proof_columns = (pw->layout_width - pw->margin_left - pw->margin_right) / proof_w;
	pw->proof_rows = (pw->layout_height - pw->margin_top - pw->margin_bottom) / proof_h;

	if (pw->job_format == RENDER_FORMAT_PREVIEW)
		{
		gint total;

		total = print_layout_page_count(pw);
		if (pw->job_page < 0 || pw->job_page >= total)
			{
			print_job_done(pw);
			return;
			}

		if (pw->proof_point && pw->job_page > 0)
			{
			pw->proof_point = g_list_nth(pw->proof_point, pw->job_page * pw->proof_columns * pw->proof_rows);
			}
		}

	if (!print_job_page_new(pw))
		{
		print_job_close(pw, TRUE);
		return;
		}

	if (pw->layout == PRINT_LAYOUT_IMAGE)
		{
		finished = !print_job_render_image(pw);
		}
	else
		{
		finished = !print_job_render_proof(pw);
		}

	if (finished) print_job_done(pw);
}

static gint print_job_init(PrintWindow *pw)
{
	gint success = FALSE;

	pw->job_page = 0;

	switch (pw->job_format)
		{
		case RENDER_FORMAT_RGB:
			success = print_job_rgb_init(pw);
			break;
		case RENDER_FORMAT_PS:
			success = print_job_ps_init(pw);
			break;
		case RENDER_FORMAT_PREVIEW:
			pw->job_page = pw->proof_page;
			success = print_job_preview_init(pw);
			break;
		}

	return success;
}

static gint print_job_finish(PrintWindow *pw)
{
	gint success = FALSE;

	switch (pw->job_format)
		{
		case RENDER_FORMAT_RGB:
			success = TRUE;
			break;
		case RENDER_FORMAT_PS:
			print_job_ps_end(pw);
			break;
		case RENDER_FORMAT_PREVIEW:
			success = TRUE;
			break;
		}

	return success;
}

static void print_job_close_file(PrintWindow *pw)
{
	if (pw->job_file)
		{
		fclose(pw->job_file);
		pw->job_file = NULL;
		}

	if (pw->job_pipe)
		{
		PipeError *pe;

		pe = pipe_handler_new();
		pclose(pw->job_pipe);
		pipe_handler_free(pe);

		pw->job_pipe = NULL;
		}
}

static gboolean print_job_close_finish_cb(gpointer data)
{
	PrintWindow *pw = data;

	print_window_close(pw);
	return FALSE;
}

static void print_job_close(PrintWindow *pw, gint error)
{
	if (!error) print_job_finish(pw);

	print_job_close_file(pw);
	g_free(pw->job_path);
	pw->job_path = NULL;

	if (pw->job_dialog)
		{
		generic_dialog_close(pw->job_dialog);
		pw->job_dialog = NULL;
		pw->job_progress = NULL;
		}

	image_loader_free(pw->job_loader);
	pw->job_loader = NULL;

	if (pw->job_pixbuf)
		{
		g_object_unref(pw->job_pixbuf);
		pw->job_pixbuf = NULL;
		}

	if (pw->dialog && !GTK_WIDGET_VISIBLE(pw->dialog->dialog))
		{
		g_idle_add_full(G_PRIORITY_HIGH_IDLE, print_job_close_finish_cb, pw, NULL);
		}
}

static void print_job_cancel_cb(GenericDialog *gd, gpointer data)
{
	PrintWindow *pw = data;

	print_job_close(pw, FALSE);
}

static void print_pref_store(PrintWindow *pw)
{

	pref_list_int_set(PRINT_PREF_GROUP, PRINT_PREF_SAVE, pw->save_settings);

	if (!pw->save_settings) return;

	/* only store values that are actually used in this print job, hence the if()s */

	pref_list_int_set(PRINT_PREF_GROUP, PRINT_PREF_OUTPUT, pw->output);

	if (pw->output == PRINT_OUTPUT_RGB_FILE)
		{
		pref_list_int_set(PRINT_PREF_GROUP, PRINT_PREF_FORMAT, pw->output_format);
		}

	if (pw->job_format == RENDER_FORMAT_PS)
		{
		pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_DPI, pw->max_dpi);
		}

	pref_list_int_set(PRINT_PREF_GROUP, PRINT_PREF_UNITS, pw->paper_units);
	pref_list_int_set(PRINT_PREF_GROUP, PRINT_PREF_SIZE, pw->paper_size);
	pref_list_int_set(PRINT_PREF_GROUP, PRINT_PREF_ORIENTATION, pw->paper_orientation);

	if (pw->paper_size == 0)
		{
		pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_CUSTOM_WIDTH, pw->paper_width);
		pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_CUSTOM_HEIGHT, pw->paper_height);
		}

	pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_MARGIN_LEFT, pw->margin_left);
	pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_MARGIN_RIGHT, pw->margin_right);
	pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_MARGIN_TOP, pw->margin_top);
	pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_MARGIN_BOTTOM, pw->margin_bottom);

	if (pw->layout == PRINT_LAYOUT_PROOF)
		{
		pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_PROOF_WIDTH, pw->proof_width);
		pref_list_double_set(PRINT_PREF_GROUP, PRINT_PREF_PROOF_HEIGHT, pw->proof_height);
		}

	if (pw->output == PRINT_OUTPUT_PS_CUSTOM)
		{
		pref_list_string_set(PRINT_PREF_GROUP, PRINT_PREF_PRINTERC, pw->output_custom);
		}

	if (pw->output == PRINT_OUTPUT_RGB_FILE ||
	    pw->output == PRINT_OUTPUT_PS_FILE)
		{
		tab_completion_append_to_history(pw->path_entry, pw->output_path);
		}
}

static gint print_job_start(PrintWindow *pw, RenderFormat format, PrintOutput output)
{
	GtkWidget *hbox;
	GtkWidget *spinner;
	gchar *msg;

	if (pw->job_dialog) return FALSE;

	pw->job_format = format;
	pw->job_output = output;

	if (!print_job_init(pw))
		{
		print_job_close(pw, TRUE);
		return FALSE;
		}

	if (format == RENDER_FORMAT_PREVIEW)
		{
		print_job_render(pw);
		return TRUE;
		}

	print_pref_store(pw);

	gtk_widget_hide(pw->dialog->dialog);

	pw->job_dialog = file_util_gen_dlg(_("Print - GQview"), "gqview", "print_job_dialog",
					   (GtkWidget *)gtk_window_get_transient_for(GTK_WINDOW(pw->dialog->dialog)), FALSE,
					   print_job_cancel_cb, pw);

	msg = g_strdup_printf(_("Printing %d pages to %s."), print_layout_page_count(pw), print_output_name(pw->output));
	generic_dialog_add_message(pw->job_dialog, NULL, msg, NULL);
	g_free(msg);

	if (pw->job_output == PRINT_OUTPUT_PS_FILE ||
	    pw->job_output == PRINT_OUTPUT_RGB_FILE)
		{
		hbox = pref_box_new(pw->job_dialog->vbox, FALSE, GTK_ORIENTATION_HORIZONTAL, PREF_PAD_SPACE);
		pref_label_new(hbox, _("Filename:"));

		pw->job_progress_label = pref_label_new(hbox, "");
		}
	else
		{
		pw->job_progress_label = NULL;
		}

	pref_spacer(pw->job_dialog->vbox, PREF_PAD_SPACE);

	hbox = pref_box_new(pw->job_dialog->vbox, FALSE, GTK_ORIENTATION_HORIZONTAL, PREF_PAD_SPACE);

	pw->job_progress = gtk_progress_bar_new();
	gtk_box_pack_start(GTK_BOX(hbox), pw->job_progress, TRUE, TRUE, 0);
	gtk_widget_show(pw->job_progress);

	spinner = spinner_new(NULL, SPINNER_SPEED);
	gtk_box_pack_start(GTK_BOX(hbox), spinner, FALSE, FALSE, 0);
	gtk_widget_show(spinner);

	gtk_widget_show(pw->job_dialog->dialog);

	print_job_render(pw);
	print_job_status(pw);

	return TRUE;
}

static void print_window_print_start(PrintWindow *pw)
{
	RenderFormat format;

	switch(pw->output)
		{
		case PRINT_OUTPUT_RGB_FILE:
			format = RENDER_FORMAT_RGB;
			break;
		case PRINT_OUTPUT_PS_FILE:
		case PRINT_OUTPUT_PS_CUSTOM:
		case PRINT_OUTPUT_PS_LPR:
		default:
			format = RENDER_FORMAT_PS;
			break;
		}

	print_job_start(pw, format, pw->output);
}


/*
 *-----------------------------------------------------------------------------
 * combo box util
 *-----------------------------------------------------------------------------
 */

static GtkWidget *print_combo_menu(const gchar *text[], gint count, gint preferred,
				   GCallback func, gpointer data)
{
	GtkWidget *combo;
	gint i;

	combo = gtk_combo_box_new_text();

	for (i = 0 ; i < count; i++)
		{
		gtk_combo_box_append_text(GTK_COMBO_BOX(combo), _(text[i]));
		}

	if (preferred >= 0 && preferred < count)
		{
		gtk_combo_box_set_active(GTK_COMBO_BOX(combo), preferred);
		}

	if (func) g_signal_connect(G_OBJECT(combo), "changed", func, data);

	return combo;
}


/*
 *-----------------------------------------------------------------------------
 * paper selection
 *-----------------------------------------------------------------------------
 */

static GtkWidget *print_paper_menu(GtkWidget *table, gint column, gint row,
				   gint preferred, GCallback func, gpointer data)
{
	GtkWidget *combo;
	gint i;

	pref_table_label(table, column, row, (_("Format:")), 1.0);

	combo = gtk_combo_box_new_text();

	i = 0;
	while (print_paper_sizes[i].description)
		{
		gtk_combo_box_append_text(GTK_COMBO_BOX(combo), _(print_paper_sizes[i].description));
		i++;
		}

	gtk_combo_box_set_active(GTK_COMBO_BOX(combo), preferred);
	if (func) g_signal_connect(G_OBJECT(combo), "changed", func, data);

	gtk_table_attach(GTK_TABLE(table), combo, column + 1, column + 2, row, row + 1,
			 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
	gtk_widget_show(combo);

	return combo;
}

static void print_paper_select_cb(GtkWidget *combo, gpointer data)
{
	PrintWindow *pw = data;
	PaperSize *ps;
	gint n;

	n = gtk_combo_box_get_active(GTK_COMBO_BOX(combo));
	ps = print_paper_size_nth(n);

	if (!ps) return;

	pw->paper_size = n;

	if (pw->paper_size == 0)
		{
		print_window_layout_sync_paper(pw);
		return;
		}

	if (ps->orientation == PAPER_ORIENTATION_PORTRAIT)
		{
		print_window_layout_set_size(pw, ps->width, ps->height);
		}
	else
		{
		print_window_layout_set_size(pw, ps->height, ps->width);
		}
}

static void print_paper_size_cb(GtkWidget *spin, gpointer data)
{
	PrintWindow *pw = data;
	gdouble value;

	value = print_paper_size_convert_units(gtk_spin_button_get_value(GTK_SPIN_BUTTON(spin)),
					       pw->paper_units, PAPER_UNIT_POINTS);

	if (spin == pw->paper_width_spin)
		{
		pw->paper_width = value;
		}
	else
		{
		pw->paper_height = value;
		}

	print_window_layout_set_size(pw, pw->paper_width, pw->paper_height);
}

static GtkWidget *print_paper_units_menu(GtkWidget *table, gint column, gint row,
					 PaperUnits units, GCallback func, gpointer data)
{
	GtkWidget *combo;

	pref_table_label(table, column, row, (_("Units:")), 1.0);

	combo = print_combo_menu(print_paper_units, PAPER_UNIT_COUNT, units, func, data);

	gtk_table_attach(GTK_TABLE(table), combo, column + 1, column + 2, row, row + 1,
			 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
	gtk_widget_show(combo);

	return combo;
}

static void print_paper_units_set(PrintWindow *pw, PaperUnits units)
{
	PaperUnits old_units;

	if (units < 0 || units >= PAPER_UNIT_COUNT) return;

	old_units = pw->paper_units;
	pw->paper_units = units;
	print_window_layout_sync_paper(pw);

	if ((units == PAPER_UNIT_MM || units == PAPER_UNIT_CM) !=
	    (old_units == PAPER_UNIT_MM || old_units == PAPER_UNIT_CM))
		{
		print_window_layout_render(pw);
		}
}

static void print_paper_units_cb(GtkWidget *combo, gpointer data)
{
	PrintWindow *pw = data;
	PaperUnits units;

	units = gtk_combo_box_get_active(GTK_COMBO_BOX(combo));

	print_paper_units_set(pw, units);
}

static GtkWidget *print_paper_orientation_menu(GtkWidget *table, gint column, gint row,
					       PaperOrientation preferred,