mirror of https://github.com/edeproject/ede.git
131 lines
3.2 KiB
C++
131 lines
3.2 KiB
C++
//
|
|
// PixmapHandler.cc for pekwm
|
|
// Copyright (C) 2003-2009 Claes Nasten <pekdon{@}pekdon{.}net>
|
|
//
|
|
// This program is licensed under the GNU GPL.
|
|
// See the LICENSE file for more information.
|
|
//
|
|
|
|
#include "../config.h"
|
|
|
|
#include "PixmapHandler.hh"
|
|
#include "PScreen.hh"
|
|
|
|
#ifdef DEBUG
|
|
#include <iostream>
|
|
using std::cerr;
|
|
using std::endl;
|
|
#endif // DEBUG
|
|
#include <map>
|
|
|
|
using std::map;
|
|
|
|
// PixmapHandler::Entry
|
|
|
|
//! @brief Constructor for Entry class
|
|
//! @param width Width of entry.
|
|
//! @param height Height of entry.
|
|
//! @param depth Depth of entry.
|
|
//! @param pixmap Pixmap associated with entry.
|
|
PixmapHandler::Entry::Entry(uint width, uint height, uint depth, Pixmap pixmap)
|
|
: _width(width), _height(height), _depth(depth), _pixmap(pixmap)
|
|
{
|
|
}
|
|
|
|
//! @brief Destructor for Entry class
|
|
PixmapHandler::Entry::~Entry(void)
|
|
{
|
|
XFreePixmap(PScreen::instance()->getDpy(), _pixmap);
|
|
}
|
|
|
|
// PixmapHandler
|
|
|
|
//! @brief Constructor for PixmapHandler class
|
|
PixmapHandler::PixmapHandler(uint cache_size)
|
|
: _cache_size(cache_size)
|
|
{
|
|
}
|
|
|
|
//! @brief Destructor for PixmapHandler class
|
|
PixmapHandler::~PixmapHandler(void)
|
|
{
|
|
#ifdef DEBUG
|
|
if (_used_pix.size() > 0) {
|
|
cerr << __FILE__ << "@" << __LINE__ << ": "
|
|
<< "Used pixmap list size > 0, size: "
|
|
<< _used_pix.size() << endl;
|
|
}
|
|
#endif // DEBUG
|
|
|
|
// Free resources
|
|
map<Pixmap, Entry*>::iterator it;
|
|
for (it = _free_pix.begin(); it != _free_pix.end(); ++it) {
|
|
delete it->second;
|
|
}
|
|
for (it = _used_pix.begin(); it != _used_pix.end(); ++it) {
|
|
delete it->second;
|
|
}
|
|
}
|
|
|
|
//! @brief Sets the cache size and trims the cache if needed
|
|
void
|
|
PixmapHandler::setCacheSize(uint cache)
|
|
{
|
|
// Cache size will be trimmed on next return pixmap call.
|
|
_cache_size = cache;
|
|
}
|
|
|
|
//! @brief Searches the Pixmap cache for a sutiable Pixmap or creates a new
|
|
//! @param width Width of the pixmap
|
|
//! @param height Height of the pixmap
|
|
//! @param depth Depth of the pixmap
|
|
Pixmap
|
|
PixmapHandler::getPixmap(uint width, uint height, uint depth)
|
|
{
|
|
Pixmap pixmap = None;
|
|
|
|
// search already created pixmaps
|
|
map<Pixmap, Entry*>::iterator it(_free_pix.begin());
|
|
for (; it != _free_pix.end(); ++it) {
|
|
if (it->second->isMatch(width, height, depth)) {
|
|
pixmap = it->first;
|
|
|
|
// Move the entry to the used list
|
|
_used_pix[it->first] = it->second;
|
|
_free_pix.erase(it);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// No entry, create one
|
|
if (pixmap == None) {
|
|
pixmap = XCreatePixmap(PScreen::instance()->getDpy(),
|
|
PScreen::instance()->getRoot(),
|
|
width, height, depth);
|
|
|
|
_used_pix[pixmap] = new Entry(width, height, depth, pixmap);
|
|
}
|
|
|
|
return pixmap;
|
|
}
|
|
|
|
//! @brief Returns the pixmap to the Pixmap cache
|
|
void
|
|
PixmapHandler::returnPixmap(Pixmap pixmap)
|
|
{
|
|
// Remove from used list
|
|
std::map<Pixmap, Entry*>::iterator it = _used_pix.find(pixmap);
|
|
if (it != _used_pix.end()) {
|
|
_free_pix[it->first] = it->second;
|
|
_used_pix.erase(it);
|
|
}
|
|
|
|
// Trim the cache
|
|
while (_free_pix.size() > _cache_size) {
|
|
it = _free_pix.begin();
|
|
|
|
delete it->second;
|
|
_free_pix.erase(it);
|
|
}
|
|
}
|