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adjustments to icon placement

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- the biggest part of this is fixing a bug that prevented the last empty space in the
  icon area to be used.
- also prefer new C++ style variable initialization.
This commit is contained in:
Mike Small 2020-11-14 19:53:24 -05:00
parent d98d0940c0
commit 09842b93dc
1 changed files with 28 additions and 31 deletions
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59
src/icons.cc
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@ -29,7 +29,7 @@ in this Software without prior written authorization from The Open Group.
*
* 10-Apr-89 Tom LaStrange Initial Version.
*
* 31-Oct-20 Mike Small Switch to C++, simplify placement.
* 07-Nov-20 Mike Small Switch to C++, simplify placement.
**********************************************************************/
#include <algorithm>
@ -41,14 +41,12 @@ in this Software without prior written authorization from The Open Group.
#include "parse.h"
#include "util.h"
// DEBUG
#include <iostream>
using namespace std;
using Coord = pair<int, int>;
const int icon_area_w = 70;
const int icon_pad = 8;
const int icon_pad = 2;
#define iconWidth(w) (BW2 + w->icon_w_width)
#define iconHeight(w) (BW2 + w->icon_w_height)
@ -62,19 +60,19 @@ roundUp (int v, int multiple)
static Coord
PlaceIcon(const TwmWindow& win, int def_x, int def_y)
{
// Try to place in a gap along the right side of the current screen.
// icons are dropped to the right of this x offset.
const int icon_area_x = Scr->MyDisplayWidth - icon_area_w;
const int icon_area_x {Scr->MyDisplayWidth - icon_area_w};
const int height {win.icon_w_height ? win.icon_w_height : 64};
// always place xconsole's icon on the lower right.
if (strcmp(win.name, "xconsole") == 0)
return {icon_area_x + icon_pad, Scr->MyDisplayHeight - height};
int y = 0;
using Span = pair<int,int>;
vector<Span> occupied;
cerr << "win: " << win.name << '\n';
for (TwmWindow* pw = Scr->TwmRoot.next; pw; pw = pw->next) {
// Iconified means it was iconified at some point.
if (pw->iconified) {
cerr << "pw, iconfified: " << pw->name << '\n';
Window root;
int icon_x, icon_y;
unsigned icon_w, icon_h, border_width, depth;
@ -87,8 +85,6 @@ PlaceIcon(const TwmWindow& win, int def_x, int def_y)
}
}
else {
cerr << "pw, non-iconfified: " << pw->name << '\n';
// A small non-iconified window sitting where an icon would? E.g. xclock.
// non-iconified windows that look like icons are assumed never to have
// been iconified.
@ -99,30 +95,31 @@ PlaceIcon(const TwmWindow& win, int def_x, int def_y)
}
}
}
const int h = win.icon_w_height ? win.icon_w_height : 64;
if (occupied.size() == 0) {
y = Scr->MyDisplayHeight - h;
}
else {
sort(occupied.begin(), occupied.end());
int prev = 0;
for (auto span : occupied) {
if (span.first - prev >= h) {
if (span.first - prev >= h + 2*icon_pad)
y = prev + icon_pad;
else
y = prev;
break;
}
prev = span.second;
sort(occupied.begin(), occupied.end());
// The loop below looks for a gap in the icon area. Add a sentinel to represent
// the end of the open area, if any, after all icons.
occupied.push_back({Scr->MyDisplayHeight + icon_pad,
Scr->MyDisplayHeight + 2 * icon_pad});
int y {0}, prev {0};
for (const auto span : occupied) {
const int gap = span.first - prev;
if (gap >= height + icon_pad) {
y = prev + icon_pad;
break;
}
else if (gap >= height) {
y = min(prev, 1);
break;
}
prev = span.second;
}
Coord icon_pos { def_x, def_y };
if (y) {
const int w = win.icon_w_width ? win.icon_w_width : 64;
const int offset = (icon_area_w - w) / 2;
if (y != 0) {
const int w {win.icon_w_width ? win.icon_w_width : 64};
const int offset { (icon_area_w - w) / 2 };
icon_pos.first = icon_area_x + (offset > 0 ? offset : icon_pad);
icon_pos.second = y;
}