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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <sal/types.h>
#define LOK_USE_UNSTABLE_API
#include <LibreOfficeKit/LibreOfficeKit.h>
#include <LibreOfficeKit/LibreOfficeKitGtk.h>
static void lok_docview_class_init( LOKDocViewClass* pClass );
static void lok_docview_init( LOKDocView* pDocView );
// We specifically need to destroy the document when closing in order to ensure
// that lock files etc. are cleaned up.
void lcl_onDestroy( LOKDocView* pDocView, gpointer pData )
{
(void) pData;
if ( pDocView->pDocument )
pDocView->pDocument->pClass->destroy( pDocView->pDocument );
pDocView->pDocument = NULL;
}
SAL_DLLPUBLIC_EXPORT guint lok_docview_get_type()
{
static guint lok_docview_type = 0;
if (!lok_docview_type)
{
GtkTypeInfo lok_docview_info =
{
"LokDocView",
sizeof( LOKDocView ),
sizeof( LOKDocViewClass ),
(GtkClassInitFunc) lok_docview_class_init,
(GtkObjectInitFunc) lok_docview_init,
NULL,
NULL,
(GtkClassInitFunc) NULL
};
lok_docview_type = gtk_type_unique( gtk_scrolled_window_get_type(), &lok_docview_info );
}
return lok_docview_type;
}
static void lok_docview_class_init( LOKDocViewClass* pClass )
{
pClass->lok_docview = NULL;
}
static void lok_docview_init( LOKDocView* pDocView )
{
// Gtk ScrolledWindow is apparently not fully initialised yet, we specifically
// have to set the [hv]adjustment to prevent GTK assertions from firing, see
// https://bugzilla.gnome.org/show_bug.cgi?id=438114 for more info.
gtk_scrolled_window_set_hadjustment( GTK_SCROLLED_WINDOW( pDocView ), NULL );
gtk_scrolled_window_set_vadjustment( GTK_SCROLLED_WINDOW( pDocView ), NULL );
pDocView->pEventBox = gtk_event_box_new();
gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(pDocView),
pDocView->pEventBox );
pDocView->pCanvas = gtk_image_new();
gtk_container_add( GTK_CONTAINER( pDocView->pEventBox ), pDocView->pCanvas );
gtk_widget_show( pDocView->pCanvas );
gtk_widget_show( pDocView->pEventBox );
pDocView->pPixBuf = 0;
// TODO: figure out a clever view of getting paths set up.
pDocView->pOffice = 0;
pDocView->pDocument = 0;
pDocView->fZoom = 1;
gtk_signal_connect( GTK_OBJECT(pDocView), "destroy",
GTK_SIGNAL_FUNC(lcl_onDestroy), NULL );
}
SAL_DLLPUBLIC_EXPORT GtkWidget* lok_docview_new( LibreOfficeKit* pOffice )
{
LOKDocView* pDocView = gtk_type_new( lok_docview_get_type() );
pDocView->pOffice = pOffice;
return GTK_WIDGET( pDocView );
}
void renderDocument( LOKDocView* pDocView )
{
long nWidth, nHeight;
int nRenderWidth, nRenderHeight;
unsigned char* pBuffer;
int nRowStride;
g_assert( pDocView->pDocument );
if ( pDocView->pPixBuf )
{
g_object_unref( G_OBJECT( pDocView->pPixBuf ) );
}
pDocView->pDocument->pClass->getDocumentSize( pDocView->pDocument, &nWidth, &nHeight );
// TODO: we really should scale by screen DPI here -- 10 seems to be a vaguely
// correct factor for my screen at least.
const float fScaleFactor = 0.1;
// Various things blow up if we try to draw too large a tile,
// this size seems to be safe. (Very rare/unlikely that
const int nMaxWidth = 100000;
if ( nWidth * fScaleFactor > nMaxWidth )
{
nWidth = nMaxWidth;
}
if ( nHeight * fScaleFactor > nMaxWidth )
{
nHeight = nMaxWidth;
}
// Draw the whole document at once (for now)
nRenderWidth = nWidth * pDocView->fZoom * fScaleFactor;
nRenderHeight = nHeight * pDocView->fZoom * fScaleFactor;
pDocView->pPixBuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB,
TRUE, 8,
nRenderWidth, nRenderHeight);
pBuffer = gdk_pixbuf_get_pixels( pDocView->pPixBuf );
pDocView->pDocument->pClass->paintTile( pDocView->pDocument,
pBuffer,
nRenderWidth, nRenderHeight,
&nRowStride,
0, 0, // origin
nWidth, nHeight );
// TODO: double check that the rowstride really matches what we expected,
// although presumably we'd already be crashing by now if things were
// wrong.
(void) nRowStride;
gtk_image_set_from_pixbuf( GTK_IMAGE( pDocView->pCanvas ), pDocView->pPixBuf );
}
SAL_DLLPUBLIC_EXPORT gboolean lok_docview_open_document( LOKDocView* pDocView, char* pPath )
{
if ( pDocView->pDocument )
{
pDocView->pDocument->pClass->destroy( pDocView->pDocument );
pDocView->pDocument = NULL;
}
pDocView->pDocument = pDocView->pOffice->pClass->documentLoad( pDocView->pOffice,
pPath );
if ( !pDocView->pDocument )
{
// FIXME: should have a GError parameter and populate it.
char *pError = pDocView->pOffice->pClass->getError( pDocView->pOffice );
fprintf( stderr, "Error opening document '%s'\n", pError );
return FALSE;
}
else
renderDocument( pDocView );
return TRUE;
}
SAL_DLLPUBLIC_EXPORT void lok_docview_set_zoom ( LOKDocView* pDocView, float fZoom )
{
pDocView->fZoom = fZoom;
if ( pDocView->pDocument )
{
renderDocument( pDocView );
}
// TODO: maybe remember and reset positiong?
}
SAL_DLLPUBLIC_EXPORT float lok_docview_get_zoom ( LOKDocView* pDocView )
{
return pDocView->fZoom;
}
SAL_DLLPUBLIC_EXPORT int lok_docview_get_parts( LOKDocView* pDocView )
{
return pDocView->pDocument->pClass->getParts( pDocView->pDocument );
}
SAL_DLLPUBLIC_EXPORT int lok_docview_get_part( LOKDocView* pDocView )
{
return pDocView->pDocument->pClass->getPart( pDocView->pDocument );
}
SAL_DLLPUBLIC_EXPORT void lok_docview_set_part( LOKDocView* pDocView, int nPart)
{
pDocView->pDocument->pClass->setPart( pDocView->pDocument, nPart );
renderDocument( pDocView );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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