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Convert example from strdup -> std::string

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This commit is contained in:
Greg Ercolano 2020-07-22 20:14:07 -07:00
parent b409588012
commit e9688822ec
1 changed files with 29 additions and 27 deletions
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56
examples/table-sort.cxx
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@ -26,11 +26,11 @@
#include <FL/Fl_Double_Window.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Table_Row.H>
#include <FL/fl_string.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <string>
#include <vector>
#include <algorithm> // STL sort
@ -58,7 +58,7 @@ static const char *G_header[] = { "Perms", "#L", "Own", "Group", "Size", "Date",
// A single row of columns
class Row {
public:
std::vector<char*> cols;
std::vector<std::string> cols;
};
// Sort class to handle sorting column using std::sort
@ -70,8 +70,8 @@ public:
_reverse = reverse;
}
bool operator()(const Row &a, const Row &b) {
const char *ap = ( _col < (int)a.cols.size() ) ? a.cols[_col] : "",
*bp = ( _col < (int)b.cols.size() ) ? b.cols[_col] : "";
const char *ap = ( _col < (int)a.cols.size() ) ? a.cols[_col].c_str() : "",
*bp = ( _col < (int)b.cols.size() ) ? b.cols[_col].c_str() : "";
if ( isdigit(*ap) && isdigit(*bp) ) { // cheezy detection of numeric data
// Numeric sort
int av=0; sscanf(ap, "%d", &av);
@ -87,9 +87,9 @@ public:
// Derive a custom class from Fl_Table_Row
class MyTable : public Fl_Table_Row {
private:
std::vector<Row> _rowdata; // data in each row
int _sort_reverse;
int _sort_lastcol;
std::vector<Row> rowdata_; // data in each row
int sort_reverse_;
int sort_lastcol_;
static void event_callback(Fl_Widget*, void*);
void event_callback2(); // callback for table events
@ -103,8 +103,8 @@ protected:
public:
// Ctor
MyTable(int x, int y, int w, int h, const char *l=0) : Fl_Table_Row(x,y,w,h,l) {
_sort_reverse = 0;
_sort_lastcol = -1;
sort_reverse_ = 0;
sort_lastcol_ = -1;
end();
callback(event_callback, (void*)this);
}
@ -116,7 +116,7 @@ public:
// Sort a column up or down
void MyTable::sort_column(int col, int reverse) {
std::sort(_rowdata.begin(), _rowdata.end(), SortColumn(col, reverse));
std::sort(rowdata_.begin(), rowdata_.end(), SortColumn(col, reverse));
redraw();
}
@ -127,7 +127,7 @@ void MyTable::draw_sort_arrow(int X,int Y,int W,int H) {
int xrit = X+(W-6)-0;
int ytop = Y+(H/2)-4;
int ybot = Y+(H/2)+4;
if ( _sort_reverse ) {
if ( sort_reverse_ ) {
// Engraved down arrow
fl_color(FL_WHITE);
fl_line(xrit, ytop, xctr, ybot);
@ -147,8 +147,8 @@ void MyTable::draw_sort_arrow(int X,int Y,int W,int H) {
// Handle drawing all cells in table
void MyTable::draw_cell(TableContext context, int R, int C, int X, int Y, int W, int H) {
const char *s = "";
if ( R < (int)_rowdata.size() && C < (int)_rowdata[R].cols.size() )
s = _rowdata[R].cols[C];
if ( R < (int)rowdata_.size() && C < (int)rowdata_[R].cols.size() )
s = rowdata_[R].cols[C].c_str();
switch ( context ) {
case CONTEXT_COL_HEADER:
fl_push_clip(X,Y,W,H); {
@ -158,7 +158,7 @@ void MyTable::draw_cell(TableContext context, int R, int C, int X, int Y, int W,
fl_color(FL_BLACK);
fl_draw(G_header[C], X+2,Y,W,H, FL_ALIGN_LEFT, 0, 0); // +2=pad left
// Draw sort arrow
if ( C == _sort_lastcol ) {
if ( C == sort_lastcol_ ) {
draw_sort_arrow(X,Y,W,H);
}
}
@ -193,9 +193,9 @@ void MyTable::autowidth(int pad) {
col_width(c, w+pad);
}
fl_font(ROW_FONTFACE, ROW_FONTSIZE);
for ( int r=0; r<(int)_rowdata.size(); r++ ) {
for ( int c=0; c<(int)_rowdata[r].cols.size(); c++ ) {
w=0; fl_measure(_rowdata[r].cols[c], w, h, 0); // pixel width of row text
for ( int r=0; r<(int)rowdata_.size(); r++ ) {
for ( int c=0; c<(int)rowdata_[r].cols.size(); c++ ) {
w=0; fl_measure(rowdata_[r].cols[c].c_str(), w, h, 0); // pixel width of row text
if ( (w + pad) > col_width(c)) col_width(c, w + pad);
}
}
@ -206,8 +206,9 @@ void MyTable::autowidth(int pad) {
// Resize parent window to size of table
void MyTable::resize_window() {
// Determine exact outer width of table with all columns visible
int width = 4; // width of table borders
int width = 2; // width of table borders
for ( int t=0; t<cols(); t++ ) width += col_width(t); // total width of all columns
width += vscrollbar->w(); // include width of scrollbar
width += MARGIN*2;
if ( width < 200 || width > Fl::w() ) return;
window()->resize(window()->x(), window()->y(), width, window()->h()); // resize window to fit
@ -219,14 +220,15 @@ void MyTable::load_command(const char *cmd) {
FILE *fp = popen(cmd, "r");
cols(0);
for ( int r=0; fgets(s, sizeof(s)-1, fp); r++ ) {
if ( r==0 && strncmp(s,"total ",6)==0) { --r; continue; }
// Add a new row
Row newrow; _rowdata.push_back(newrow);
std::vector<char*> &rc = _rowdata[r].cols;
Row newrow; rowdata_.push_back(newrow);
std::vector<std::string> &rc = rowdata_[r].cols;
// Break line into separate word 'columns'
char *ss;
const char *delim = " \t\n";
for(int t=0; (t==0)?(ss=strtok(s,delim)):(ss=strtok(NULL,delim)); t++) {
rc.push_back(fl_strdup(ss));
rc.push_back(ss); // char* -> std::string
}
// Keep track of max # columns
if ( (int)rc.size() > cols() ) {
@ -234,7 +236,7 @@ void MyTable::load_command(const char *cmd) {
}
}
// How many rows we loaded
rows((int)_rowdata.size());
rows((int)rowdata_.size());
// Auto-calculate widths, with 20 pixel padding
autowidth(20);
}
@ -252,13 +254,13 @@ void MyTable::event_callback2() {
switch ( context ) {
case CONTEXT_COL_HEADER: { // someone clicked on column header
if ( Fl::event() == FL_RELEASE && Fl::event_button() == 1 ) {
if ( _sort_lastcol == COL ) { // Click same column? Toggle sort
_sort_reverse ^= 1;
if ( sort_lastcol_ == COL ) { // Click same column? Toggle sort
sort_reverse_ ^= 1;
} else { // Click diff column? Up sort
_sort_reverse = 0;
sort_reverse_ = 0;
}
sort_column(COL, _sort_reverse);
_sort_lastcol = COL;
sort_column(COL, sort_reverse_);
sort_lastcol_ = COL;
}
break;
}