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#include "common.h"
#ifdef BUILD_X11
#include <X11/Xlib.h>
#include "image.h"
#include "context.h"
#include "color.h"
#include "rgba.h"
static Context *context = NULL;
static int max_context_count = 128;
static int context_counter = 0;
void
__imlib_SetMaxContexts(int num)
{
max_context_count = num;
__imlib_FlushContexts();
}
int
__imlib_GetMaxContexts(void)
{
return max_context_count;
}
void
__imlib_FlushContexts(void)
{
Context *ct, *pct, *ctt;
ct = context;
pct = NULL;
while (ct)
{
ctt = ct;
ct = ct->next;
/* it hasnt been referenced in the last max_context_count refernces */
/* thus old and getrid of it */
if (ctt->last_use < (context_counter - max_context_count))
{
if (pct)
context = ctt->next;
else
pct->next = ctt->next;
if (ctt->palette)
{
int i, num[] = { 256, 128, 64, 32, 16, 8, 1 };
unsigned long pixels[256];
for (i = 0; i < num[ctt->palette_type]; i++)
pixels[i] = (unsigned long)ctt->palette[i];
XFreeColors(ctt->display, ctt->colormap, pixels,
num[ctt->palette_type], 0);
free(ctt->palette);
free(ctt->r_dither);
free(ctt->g_dither);
free(ctt->b_dither);
}
else if (ctt->r_dither)
{
free(ctt->r_dither);
free(ctt->g_dither);
free(ctt->b_dither);
}
free(ctt);
}
else
pct = ctt;
}
}
void
__imlib_FreeContextForDisplay(Display * d)
{
Context *ct;
ct = context;
while (ct)
{
if (ct->display == d)
ct->last_use = -(max_context_count * 2);
ct = ct->next;
}
__imlib_FlushContexts();
}
void
__imlib_FreeContextForColormap(Display * d, Colormap cm)
{
Context *ct;
ct = context;
while (ct)
{
if ((ct->display == d) && (ct->colormap == cm))
ct->last_use = -(max_context_count * 2);
ct = ct->next;
}
__imlib_FlushContexts();
}
void
__imlib_FreeContextForVisual(Display * d, Visual * v)
{
Context *ct;
ct = context;
while (ct)
{
if ((ct->display == d) && (ct->visual == v))
ct->last_use = -(max_context_count * 2);
ct = ct->next;
}
__imlib_FlushContexts();
}
Context *
__imlib_FindContext(Display * d, Visual * v, Colormap c, int depth)
{
Context *ct, *pct;
pct = NULL;
ct = context;
while (ct)
{
if ((ct->display == d) && (ct->visual == v) &&
(ct->colormap == c) && (ct->depth == depth))
{
if (pct)
{
pct->next = ct->next;
ct->next = context;
context = ct;
}
return ct;
}
pct = ct;
ct = ct->next;
}
return NULL;
}
Context *
__imlib_NewContext(Display * d, Visual * v, Colormap c, int depth)
{
Context *ct;
context_counter++;
ct = malloc(sizeof(Context));
ct->last_use = context_counter;
ct->display = d;
ct->visual = v;
ct->colormap = c;
ct->depth = depth;
ct->next = NULL;
if (depth <= 8)
{
ct->palette = __imlib_AllocColorTable(d, c, &(ct->palette_type), v);
ct->r_dither = malloc(sizeof(DATA8) * DM_X * DM_Y * 256);
ct->g_dither = malloc(sizeof(DATA8) * DM_X * DM_Y * 256);
ct->b_dither = malloc(sizeof(DATA8) * DM_X * DM_Y * 256);
__imlib_RGBA_init((void *)ct->r_dither, (void *)ct->g_dither,
(void *)ct->b_dither, depth, ct->palette_type);
}
else
{
ct->palette = NULL;
ct->palette_type = 0;
if ((depth > 8) && (depth <= 16))
{
ct->r_dither = malloc(sizeof(DATA16) * 4 * 4 * 256);
ct->g_dither = malloc(sizeof(DATA16) * 4 * 4 * 256);
ct->b_dither = malloc(sizeof(DATA16) * 4 * 4 * 256);
__imlib_RGBA_init((void *)ct->r_dither, (void *)ct->g_dither,
(void *)ct->b_dither, depth, 0);
}
else
{
ct->r_dither = NULL;
ct->g_dither = NULL;
ct->b_dither = NULL;
__imlib_RGBA_init((void *)ct->r_dither, (void *)ct->g_dither,
(void *)ct->b_dither, depth, 0);
}
}
return ct;
}
Context *
__imlib_GetContext(Display * d, Visual * v, Colormap c, int depth)
{
Context *ct;
ct = __imlib_FindContext(d, v, c, depth);
if (ct)
{
ct->last_use = context_counter;
return ct;
}
ct = __imlib_NewContext(d, v, c, depth);
ct->next = context;
context = ct;
__imlib_FlushContexts();
return ct;
}
#endif /* BUILD_X11 */
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