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Make it possible to sort a GTableModel by column+order.

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This is accomplished by putting a GSortingProxyTableModel between the model
and the view. It's pretty simplistic but it works for this use case. :^)
This commit is contained in:
Andreas Kling 2019-03-09 13:33:52 +01:00
parent 0680fe2383
commit 7d1142c7d9
16 changed files with 278 additions and 40 deletions
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41
LibC/qsort.cpp
View file

@ -38,7 +38,8 @@ static char sccsid[] = "@(#)qsort.c 5.9 (Berkeley) 2/23/91";
#include <sys/types.h>
#include <stdlib.h>
static void insertion_sort(void* bot, size_t nmemb, size_t size, int (*compar)(const void *, const void *));
static void insertion_sort(void* bot, size_t nmemb, size_t size, int (*compar)(const void*, const void*));
static void insertion_sort_r(void* bot, size_t nmemb, size_t size, int (*compar)(const void*, const void*, void*), void* arg);
void qsort(void* bot, size_t nmemb, size_t size, int (*compar)(const void *, const void *))
{
@ -48,23 +49,23 @@ void qsort(void* bot, size_t nmemb, size_t size, int (*compar)(const void *, con
insertion_sort(bot, nmemb, size, compar);
}
void insertion_sort(void* bot, size_t nmemb, size_t size, int (*compar)(const void *, const void *))
void qsort_r(void* bot, size_t nmemb, size_t size, int (*compar)(const void*, const void*, void*), void* arg)
{
if (nmemb <= 1)
return;
insertion_sort_r(bot, nmemb, size, compar, arg);
}
void insertion_sort(void* bot, size_t nmemb, size_t size, int (*compar)(const void*, const void*))
{
int cnt;
unsigned char ch;
char *s1, *s2, *t1, *t2, *top;
/*
* A simple insertion sort (see Knuth, Vol. 3, page 81, Algorithm
* S). Insertion sort has the same worst case as most simple sorts
* (O N^2). It gets used here because it is (O N) in the case of
* sorted data.
*/
top = (char*)bot + nmemb * size;
for (t1 = (char*)bot + size; t1 < top;) {
for (t2 = t1; (t2 -= size) >= bot && compar(t1, t2) < 0;);
if (t1 != (t2 += size)) {
/* Bubble bytes up through each element. */
for (cnt = size; cnt--; ++t1) {
ch = *t1;
for (s1 = s2 = t1; (s2 -= size) >= t2; s1 = s2)
@ -75,3 +76,23 @@ void insertion_sort(void* bot, size_t nmemb, size_t size, int (*compar)(const vo
t1 += size;
}
}
void insertion_sort_r(void* bot, size_t nmemb, size_t size, int (*compar)(const void*, const void*, void*), void* arg)
{
int cnt;
unsigned char ch;
char *s1, *s2, *t1, *t2, *top;
top = (char*)bot + nmemb * size;
for (t1 = (char*)bot + size; t1 < top;) {
for (t2 = t1; (t2 -= size) >= bot && compar(t1, t2, arg) < 0;);
if (t1 != (t2 += size)) {
for (cnt = size; cnt--; ++t1) {
ch = *t1;
for (s1 = s2 = t1; (s2 -= size) >= t2; s1 = s2)
*s1 = *s2;
*s1 = ch;
}
} else
t1 += size;
}
}