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Extract to_string_* functions from ui_widget.

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This commit is contained in:
Jared Boone 2015-12-02 13:38:17 -08:00
parent d8c59e2ce2
commit 76845c4335
12 changed files with 178 additions and 122 deletions
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95
firmware/common/ui_widget.cpp
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@ -26,6 +26,8 @@
#include <cstddef>
#include <algorithm>
#include "string_format.hpp"
namespace ui {
static bool ui_dirty = true;
@ -42,99 +44,6 @@ bool is_dirty() {
return ui_dirty;
}
constexpr size_t to_string_max_length = 16;
static char* to_string_dec_uint_internal(
char* p,
uint32_t n
) {
*p = 0;
auto q = p;
do {
const uint32_t d = n % 10;
const char c = d + 48;
*(--q) = c;
n /= 10;
} while( n != 0 );
return q;
}
static char* to_string_dec_uint_pad_internal(
char* const term,
const uint32_t n,
const int32_t l,
const char fill
) {
auto q = to_string_dec_uint_internal(term, n);
if( fill ) {
while( (term - q) < l ) {
*(--q) = fill;
}
}
return q;
}
std::string to_string_dec_uint(
const uint32_t n,
const int32_t l,
const char fill
) {
char p[16];
auto term = p + sizeof(p) - 1;
auto q = to_string_dec_uint_pad_internal(term, n, l, fill);
// Right justify.
while( (term - q) < l ) {
*(--q) = ' ';
}
return q;
}
std::string to_string_dec_int(
const int32_t n,
const int32_t l,
const char fill
) {
const size_t negative = (n < 0) ? 1 : 0;
uint32_t n_abs = negative ? -n : n;
char p[16];
auto term = p + sizeof(p) - 1;
auto q = to_string_dec_uint_pad_internal(term, n_abs, l - negative, fill);
// Add sign.
if( negative ) {
*(--q) = '-';
}
// Right justify.
while( (term - q) < l ) {
*(--q) = ' ';
}
return q;
}
static void to_string_hex_internal(char* p, const uint32_t n, const int32_t l) {
const uint32_t d = n & 0xf;
p[l] = (d > 9) ? (d + 87) : (d + 48);
if( l > 0 ) {
to_string_hex_internal(p, n >> 4, l - 1);
}
}
std::string to_string_hex(const uint32_t n, const int32_t l) {
char p[16];
to_string_hex_internal(p, n, l - 1);
p[l] = 0;
return p;
}
/* Widget ****************************************************************/
Point Widget::screen_pos() {