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Dogcows Code - chaz/openbox/blob - src/gccache.cc
1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
4 # include "../config.h"
5 #endif // HAVE_CONFIG_H
12 #include "basedisplay.hh"
17 BGCCacheContext::~BGCCacheContext(void) {
19 XFreeGC(display
->getXDisplay(), gc
);
23 void BGCCacheContext::set(const BColor
&_color
,
24 const XFontStruct
* const _font
,
25 const int _function
, const int _subwindow
,
28 pixel
= gcv
.foreground
= _color
.pixel();
29 function
= gcv
.function
= _function
;
30 subwindow
= gcv
.subwindow_mode
= _subwindow
;
31 linewidth
= gcv
.line_width
= _linewidth
;
32 gcv
.cap_style
= CapProjecting
;
34 unsigned long mask
= GCForeground
| GCFunction
| GCSubwindowMode
|
35 GCLineWidth
| GCCapStyle
;
38 fontid
= gcv
.font
= _font
->fid
;
44 XChangeGC(display
->getXDisplay(), gc
, mask
, &gcv
);
48 void BGCCacheContext::set(const XFontStruct
* const _font
) {
55 fontid
= gcv
.font
= _font
->fid
;
56 XChangeGC(display
->getXDisplay(), gc
, GCFont
, &gcv
);
60 BGCCache::BGCCache(const BaseDisplay
* const _display
,
61 unsigned int screen_count
)
62 : display(_display
), context_count(128u),
63 cache_size(16u), cache_buckets(8u * screen_count
),
64 cache_total_size(cache_size
* cache_buckets
) {
66 contexts
= new BGCCacheContext
*[context_count
];
68 for (i
= 0; i
< context_count
; i
++) {
69 contexts
[i
] = new BGCCacheContext(display
);
72 cache
= new BGCCacheItem
*[cache_total_size
];
73 for (i
= 0; i
< cache_total_size
; ++i
) {
74 cache
[i
] = new BGCCacheItem
;
79 BGCCache::~BGCCache(void) {
80 std::for_each(contexts
, contexts
+ context_count
, PointerAssassin());
81 std::for_each(cache
, cache
+ cache_total_size
, PointerAssassin());
87 BGCCacheContext
*BGCCache::nextContext(unsigned int scr
) {
88 Window hd
= display
->getScreenInfo(scr
)->getRootWindow();
92 for (unsigned int i
= 0; i
< context_count
; ++i
) {
96 c
->gc
= XCreateGC(display
->getXDisplay(), hd
, 0, 0);
100 if (! c
->used
&& c
->screen
== scr
)
104 fprintf(stderr
, "BGCCache: context fault!\n");
106 return (BGCCacheContext
*) 0; // not reached
110 void BGCCache::release(BGCCacheContext
*ctx
) {
115 BGCCacheItem
*BGCCache::find(const BColor
&_color
,
116 const XFontStruct
* const _font
,
117 int _function
, int _subwindow
, int _linewidth
) {
118 const unsigned long pixel
= _color
.pixel();
119 const unsigned int screen
= _color
.screen();
120 const int key
= _color
.red() ^ _color
.green() ^ _color
.blue();
121 int k
= (key
% cache_size
) * cache_buckets
;
122 unsigned int i
= 0; // loop variable
123 BGCCacheItem
*c
= cache
[ k
], *prev
= 0;
126 this will either loop cache_buckets times then return/abort or
127 it will stop matching
130 (c
->ctx
->pixel
!= pixel
|| c
->ctx
->function
!= _function
||
131 c
->ctx
->subwindow
!= _subwindow
|| c
->ctx
->screen
!= screen
||
132 c
->ctx
->linewidth
!= _linewidth
)) {
133 if (i
< (cache_buckets
- 1)) {
139 if (c
->count
== 0 && c
->ctx
->screen
== screen
) {
140 // use this cache item
141 c
->ctx
->set(_color
, _font
, _function
, _subwindow
, _linewidth
);
148 fprintf(stderr
, "BGCCache: cache fault, count: %d, screen: %d, item screen: %d\n", c
->count
, screen
, c
->ctx
->screen
);
153 // reuse existing context
154 if (_font
&& _font
->fid
&& _font
->fid
!= c
->ctx
->fontid
)
158 if (prev
&& c
->hits
> prev
->hits
) {
163 c
->ctx
= nextContext(screen
);
164 c
->ctx
->set(_color
, _font
, _function
, _subwindow
, _linewidth
);
174 void BGCCache::release(BGCCacheItem
*_item
) {
179 void BGCCache::purge(void) {
180 for (unsigned int i
= 0; i
< cache_total_size
; ++i
) {
181 BGCCacheItem
*d
= cache
[ i
];
183 if (d
->ctx
&& d
->count
== 0) {
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