/*
 * This file is part of gtkD.
 *
 * gtkD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version, with
 * some exceptions, please read the COPYING file.
 *
 * gtkD 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with gtkD; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 */

// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage


module gtk.PrintOperationPreviewT;

public  import gobject.Signals;
public  import gtk.PageSetup;
public  import gtk.PrintContext;
public  import gtkc.gtk;
public  import gtkc.gtktypes;
public  import std.algorithm;


/** */
public template PrintOperationPreviewT(TStruct)
{
	/** Get the main Gtk struct */
	public GtkPrintOperationPreview* getPrintOperationPreviewStruct(bool transferOwnership = false)
	{
		if (transferOwnership)
			ownedRef = false;
		return cast(GtkPrintOperationPreview*)getStruct();
	}


	/**
	 * Ends a preview.
	 *
	 * This function must be called to finish a custom print preview.
	 *
	 * Since: 2.10
	 */
	public void endPreview()
	{
		gtk_print_operation_preview_end_preview(getPrintOperationPreviewStruct());
	}

	/**
	 * Returns whether the given page is included in the set of pages that
	 * have been selected for printing.
	 *
	 * Params:
	 *     pageNr = a page number
	 *
	 * Returns: %TRUE if the page has been selected for printing
	 *
	 * Since: 2.10
	 */
	public bool isSelected(int pageNr)
	{
		return gtk_print_operation_preview_is_selected(getPrintOperationPreviewStruct(), pageNr) != 0;
	}

	/**
	 * Renders a page to the preview, using the print context that
	 * was passed to the #GtkPrintOperation::preview handler together
	 * with @preview.
	 *
	 * A custom iprint preview should use this function in its ::expose
	 * handler to render the currently selected page.
	 *
	 * Note that this function requires a suitable cairo context to
	 * be associated with the print context.
	 *
	 * Params:
	 *     pageNr = the page to render
	 *
	 * Since: 2.10
	 */
	public void renderPage(int pageNr)
	{
		gtk_print_operation_preview_render_page(getPrintOperationPreviewStruct(), pageNr);
	}

	protected class OnGotPageSizeDelegateWrapper
	{
		static OnGotPageSizeDelegateWrapper[] listeners;
		void delegate(PrintContext, PageSetup, PrintOperationPreviewIF) dlg;
		gulong handlerId;
		
		this(void delegate(PrintContext, PageSetup, PrintOperationPreviewIF) dlg)
		{
			this.dlg = dlg;
			this.listeners ~= this;
		}
		
		void remove(OnGotPageSizeDelegateWrapper source)
		{
			foreach(index, wrapper; listeners)
			{
				if (wrapper.handlerId == source.handlerId)
				{
					listeners[index] = null;
					listeners = std.algorithm.remove(listeners, index);
					break;
				}
			}
		}
	}

	/**
	 * The ::got-page-size signal is emitted once for each page
	 * that gets rendered to the preview.
	 *
	 * A handler for this signal should update the @context
	 * according to @page_setup and set up a suitable cairo
	 * context, using gtk_print_context_set_cairo_context().
	 *
	 * Params:
	 *     context = the current #GtkPrintContext
	 *     pageSetup = the #GtkPageSetup for the current page
	 */
	gulong addOnGotPageSize(void delegate(PrintContext, PageSetup, PrintOperationPreviewIF) dlg, ConnectFlags connectFlags=cast(ConnectFlags)0)
	{
		auto wrapper = new OnGotPageSizeDelegateWrapper(dlg);
		wrapper.handlerId = Signals.connectData(
			this,
			"got-page-size",
			cast(GCallback)&callBackGotPageSize,
			cast(void*)wrapper,
			cast(GClosureNotify)&callBackGotPageSizeDestroy,
			connectFlags);
		return wrapper.handlerId;
	}
	
	extern(C) static void callBackGotPageSize(GtkPrintOperationPreview* printoperationpreviewStruct, GtkPrintContext* context, GtkPageSetup* pageSetup, OnGotPageSizeDelegateWrapper wrapper)
	{
		wrapper.dlg(ObjectG.getDObject!(PrintContext)(context), ObjectG.getDObject!(PageSetup)(pageSetup), wrapper.outer);
	}
	
	extern(C) static void callBackGotPageSizeDestroy(OnGotPageSizeDelegateWrapper wrapper, GClosure* closure)
	{
		wrapper.remove(wrapper);
	}

	protected class OnReadyDelegateWrapper
	{
		static OnReadyDelegateWrapper[] listeners;
		void delegate(PrintContext, PrintOperationPreviewIF) dlg;
		gulong handlerId;
		
		this(void delegate(PrintContext, PrintOperationPreviewIF) dlg)
		{
			this.dlg = dlg;
			this.listeners ~= this;
		}
		
		void remove(OnReadyDelegateWrapper source)
		{
			foreach(index, wrapper; listeners)
			{
				if (wrapper.handlerId == source.handlerId)
				{
					listeners[index] = null;
					listeners = std.algorithm.remove(listeners, index);
					break;
				}
			}
		}
	}

	/**
	 * The ::ready signal gets emitted once per preview operation,
	 * before the first page is rendered.
	 *
	 * A handler for this signal can be used for setup tasks.
	 *
	 * Params:
	 *     context = the current #GtkPrintContext
	 */
	gulong addOnReady(void delegate(PrintContext, PrintOperationPreviewIF) dlg, ConnectFlags connectFlags=cast(ConnectFlags)0)
	{
		auto wrapper = new OnReadyDelegateWrapper(dlg);
		wrapper.handlerId = Signals.connectData(
			this,
			"ready",
			cast(GCallback)&callBackReady,
			cast(void*)wrapper,
			cast(GClosureNotify)&callBackReadyDestroy,
			connectFlags);
		return wrapper.handlerId;
	}
	
	extern(C) static void callBackReady(GtkPrintOperationPreview* printoperationpreviewStruct, GtkPrintContext* context, OnReadyDelegateWrapper wrapper)
	{
		wrapper.dlg(ObjectG.getDObject!(PrintContext)(context), wrapper.outer);
	}
	
	extern(C) static void callBackReadyDestroy(OnReadyDelegateWrapper wrapper, GClosure* closure)
	{
		wrapper.remove(wrapper);
	}
}