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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 "tilebuffer.hxx"
#if !GLIB_CHECK_VERSION(2,40,0)
#define g_info(...) g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, __VA_ARGS__)
#endif
/* ------------------
Utility functions
------------------
*/
float pixelToTwip(float fInput, float zoom)
{
return (fInput / DPI / zoom) * 1440.0f;
}
float twipToPixel(float fInput, float zoom)
{
return fInput / 1440.0f * DPI * zoom;
}
/* ----------------------------
Tile class member functions
----------------------------
*/
GdkPixbuf* Tile::getBuffer()
{
return m_pBuffer;
}
void Tile::release()
{
g_object_unref (m_pBuffer);
m_pBuffer = NULL;
}
void Tile::setPixbuf(GdkPixbuf *buffer)
{
m_pBuffer = buffer;
}
/* ----------------------------------
TileBuffer class member functions
----------------------------------
*/
void TileBuffer::resetAllTiles()
{
std::map<int, Tile>::iterator it = m_mTiles.begin();
for (; it != m_mTiles.end(); ++it)
{
it->second.release();
}
m_mTiles.clear();
}
void TileBuffer::setInvalid(int x, int y)
{
int index = x * m_nWidth + y;
g_info("Setting tile invalid (%d, %d)", x, y);
if (m_mTiles.find(index) != m_mTiles.end())
{
m_mTiles[index].valid = false;
m_mTiles[index].release();
m_mTiles.erase(index);
}
}
Tile& TileBuffer::getTile(int x, int y, float aZoom)
{
int index = x * m_nWidth + y;
if(m_mTiles.find(index) == m_mTiles.end() || !m_mTiles[index].valid)
{
GdkPixbuf* pPixBuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, nTileSizePixels, nTileSizePixels);
if (!pPixBuf)
{
g_info ("Error allocating memory to pixbuf");
return m_mTiles[index];
}
unsigned char* pBuffer = gdk_pixbuf_get_pixels(pPixBuf);
GdkRectangle aTileRectangle;
aTileRectangle.x = pixelToTwip(nTileSizePixels, aZoom) * y;
aTileRectangle.y = pixelToTwip(nTileSizePixels, aZoom) * x;
g_info ("Rendering (%d, %d)", x, y);
m_pLOKDocument->pClass->paintTile(m_pLOKDocument,
pBuffer,
nTileSizePixels, nTileSizePixels,
aTileRectangle.x, aTileRectangle.y,
pixelToTwip(nTileSizePixels, aZoom),
pixelToTwip(nTileSizePixels, aZoom));
//create a mapping for it
m_mTiles[index].setPixbuf(pPixBuf);
m_mTiles[index].valid = true;
}
return m_mTiles[index];
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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