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dwm-win32.c
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dwm-win32.c
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/* See LICENSE file for copyright and license details.
*
* This is a port of the popular X11 window manager dwm to Microsoft Windows.
* It was originally started by Marc Andre Tanner <mat at brain-dump dot org>
*
* Each child of the root window is called a client. Clients are organized
* in a global linked client list, the focus history is remembered through
* a global stack list. Each client contains a bit array to indicate the
* tags of a client.
*
* Keys and tagging rules are organized as arrays and defined in config.h.
*
* To understand everything else, start reading main().
*/
#define WIN32_LEAN_AND_MEAN
#define _WIN32_WINNT 0x0500
#include <windows.h>
#include <winuser.h>
#include <stdlib.h>
#include <stdio.h>
#include <shellapi.h>
#include <stdbool.h>
#include <time.h>
#define NAME "dwm-win32" /* Used for window name/class */
/* macros */
#define ISVISIBLE(x) ((x)->tags & tagset[seltags])
#define ISFOCUSABLE(x) (!(x)->isminimized && ISVISIBLE(x) && IsWindowVisible((x)->hwnd))
#define LENGTH(x) (sizeof x / sizeof x[0])
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAXTAGLEN 16
#define WIDTH(x) ((x)->w + 2 * (x)->bw)
#define HEIGHT(x) ((x)->h + 2 * (x)->bw)
#define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
#define TEXTW(x) (textnw(x, strlen(x)))
#ifdef NDEBUG
# define debug(format, args...) do { } while(false)
#else
# define debug eprint
#endif
/* enums */
enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle }; /* clicks */
typedef struct {
int x, y, w, h;
unsigned long norm[ColLast];
unsigned long sel[ColLast];
HDC hdc;
} DC; /* draw context */
DC dc;
typedef union {
int i;
unsigned int ui;
float f;
void *v;
} Arg;
typedef struct {
unsigned int click;
unsigned int button;
unsigned int key;
void (*func)(const Arg *arg);
const Arg arg;
} Button;
typedef struct Client Client;
struct Client {
HWND hwnd;
HWND parent;
HWND root;
DWORD threadid;
int x, y, w, h;
int bw; // XXX: useless?
unsigned int tags;
bool isminimized;
bool isfloating;
bool isalive;
bool ignore;
bool border;
bool wasvisible;
bool isfixed, isurgent; // XXX: useless?
Client *next;
Client *snext;
};
typedef struct {
unsigned int mod;
unsigned int key;
void (*func)(const Arg *);
const Arg arg;
} Key;
typedef struct {
const char *symbol;
void (*arrange)(void);
} Layout;
typedef struct {
const char *class;
const char *title;
unsigned int tags;
bool isfloating;
} Rule;
/* function declarations */
static void applyrules(Client *c);
static void arrange(void);
static void attach(Client *c);
static void attachstack(Client *c);
static void cleanup();
static void clearurgent(Client *c);
static void detach(Client *c);
static void detachstack(Client *c);
static void die(const char *errstr, ...);
static void drawbar(void);
static void drawsquare(bool filled, bool empty, bool invert, unsigned long col[ColLast]);
static void drawtext(const char *text, unsigned long col[ColLast], bool invert);
void drawborder(Client *c, COLORREF color);
void eprint(const char *errstr, ...);
static void focus(Client *c);
static void focusstack(const Arg *arg);
static Client *getclient(HWND hwnd);
LPSTR getclientclassname(HWND hwnd);
LPSTR getclienttitle(HWND hwnd);
HWND getroot(HWND hwnd);
static void grabkeys(HWND hwnd);
static void killclient(const Arg *arg);
static Client *manage(HWND hwnd);
static void monocle(void);
static void movetonext(const Arg *arg);
static void movetoprev(const Arg *arg);
static Client *nextchild(Client *p, Client *c);
static Client *nexttiled(Client *c);
static void quit(const Arg *arg);
static void resize(Client *c, int x, int y, int w, int h);
static void restack(void);
static BOOL CALLBACK scan(HWND hwnd, LPARAM lParam);
static void setborder(Client *c, bool border);
static void setvisibility(HWND hwnd, bool visibility);
static void setlayout(const Arg *arg);
static void setmfact(const Arg *arg);
static void setmcount(const Arg *arg);
static void setnmcolumn(const Arg *arg);
static void setup(HINSTANCE hInstance);
static void setupbar(HINSTANCE hInstance);
static void showclientclassname(const Arg *arg);
static void showhide(Client *c);
static void spawn(const Arg *arg);
static void tag(const Arg *arg);
static int textnw(const char *text, unsigned int len);
static void tile(void);
static void htile(void);
static void togglebar(const Arg *arg);
static void toggleborder(const Arg *arg);
static void toggleclock(const Arg *arg);
static void toggleexplorer(const Arg *arg);
static void togglefloating(const Arg *arg);
static void toggletag(const Arg *arg);
static void toggleview(const Arg *arg);
static void unmanage(Client *c);
static void updatebar(void);
static void updategeom(void);
static void view(const Arg *arg);
static void zoom(const Arg *arg);
/* Shell hook stuff */
typedef BOOL (*RegisterShellHookWindowProc) (HWND);
RegisterShellHookWindowProc RegisterShellHookWindow;
/* XXX: should be in a system header, no? */
typedef struct {
HWND hwnd;
RECT rc;
} SHELLHOOKINFO, *LPSHELLHOOKINFO;
/* variables */
static HWND dwmhwnd, barhwnd;
static char stext[256];
static int sx, sy, sw, sh; /* X display screen geometry x, y, width, height */
static int by, bh, blw; /* bar geometry y, height and layout symbol width */
static int wx, wy, ww, wh; /* window area geometry x, y, width, height, bar excluded */
static unsigned int seltags, sellt;
static Client *clients = NULL;
static Client *sel = NULL;
static Client *stack = NULL;
static Layout *lt[] = { NULL, NULL };
static UINT shellhookid; /* Window Message id */
/* configuration, allows nested code to access above variables */
#include "config.h"
/* compile-time check if all tags fit into an unsigned int bit array. */
struct NumTags { char limitexceeded[sizeof(unsigned int) * 8 < LENGTH(tags) ? -1 : 1]; };
/* elements of the window whose color should be set to the values in the array below */
static int colorwinelements[] = { COLOR_ACTIVEBORDER, COLOR_INACTIVEBORDER };
static COLORREF colors[2][LENGTH(colorwinelements)] = {
{ 0, 0 }, /* used to save the values before dwm started */
{ selbordercolor, normbordercolor },
};
/* function implementations */
void
applyrules(Client *c) {
unsigned int i;
Rule *r;
/* rule matching */
for(i = 0; i < LENGTH(rules); i++) {
r = &rules[i];
if((!r->title || strstr(getclienttitle(c->hwnd), r->title))
&& (!r->class || strstr(getclientclassname(c->hwnd), r->class))) {
c->isfloating = r->isfloating;
c->tags |= r->tags & TAGMASK ? r->tags & TAGMASK : tagset[seltags];
}
}
if(!c->tags)
c->tags = tagset[seltags];
}
void
arrange(void) {
showhide(stack);
focus(NULL);
if(lt[sellt]->arrange)
lt[sellt]->arrange();
restack();
}
void
attach(Client *c) {
c->next = clients;
clients = c;
}
void
attachstack(Client *c) {
c->snext = stack;
stack = c;
}
bool
istoolwindowof(Client *p, Client *c) {
debug(" istoolwindowof: %s\n", getclienttitle(p->hwnd));
debug(" floating: %d\n", c->isfloating);
debug(" root: %d == %d\n", p->root, c->root);
debug(" threadid: %d == %d\n", p->threadid, c->threadid);
return c->isfloating && (p->root == c->root || p->threadid == c->threadid);
}
void
buttonpress(unsigned int button, POINTS *point) {
unsigned int i, x, click;
Arg arg = {0};
/* XXX: hack */
dc.hdc = GetWindowDC(barhwnd);
i = x = 0;
do { x += TEXTW(tags[i]); } while(point->x >= x && ++i < LENGTH(tags));
if(i < LENGTH(tags)) {
click = ClkTagBar;
arg.ui = 1 << i;
}
else if(point->x < x + blw)
click = ClkLtSymbol;
else if(point->x > wx + ww - TEXTW(stext))
click = ClkStatusText;
else
click = ClkWinTitle;
if (GetKeyState(VK_SHIFT) < 0)
return;
for(i = 0; i < LENGTH(buttons); i++) {
if(click == buttons[i].click && buttons[i].func && buttons[i].button == button
&& (!buttons[i].key || GetKeyState(buttons[i].key) < 0)) {
buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
break;
}
}
}
void
cleanup() {
int i;
Arg a = {.ui = ~0};
Layout foo = { "", NULL };
for(i = 0; i < LENGTH(keys); i++) {
UnregisterHotKey(dwmhwnd, i);
}
DeregisterShellHookWindow(dwmhwnd);
view(&a);
lt[sellt] = &foo;
while(stack)
unmanage(stack);
SetSysColors(LENGTH(colorwinelements), colorwinelements, colors[0]);
DestroyWindow(dwmhwnd);
}
void
clearurgent(Client *c) {
c->isurgent = false;
}
void
detach(Client *c) {
Client **tc;
for(tc = &clients; *tc && *tc != c; tc = &(*tc)->next);
*tc = c->next;
}
void
detachstack(Client *c) {
Client **tc;
for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
*tc = c->snext;
}
void
die(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
cleanup();
exit(EXIT_FAILURE);
}
void
drawbar(void) {
dc.hdc = GetWindowDC(barhwnd);
dc.h = bh;
int x;
unsigned int i, occ = 0, urg = 0;
unsigned long *col;
Client *c;
time_t timer;
struct tm *date;
char timestr[256];
for(c = clients; c; c = c->next) {
occ |= c->tags;
if(c->isurgent)
urg |= c->tags;
}
dc.x = 0;
for(i = 0; i < LENGTH(tags); i++) {
dc.w = TEXTW(tags[i]);
col = tagset[seltags] & 1 << i ? dc.sel : dc.norm;
drawtext(tags[i], col, urg & 1 << i);
drawsquare(sel && sel->tags & 1 << i, occ & 1 << i, urg & 1 << i, col);
dc.x += dc.w;
}
if(blw > 0) {
dc.w = blw;
drawtext(lt[sellt]->symbol, dc.norm, false);
x = dc.x + dc.w;
}
else
x = dc.x;
dc.w = TEXTW(stext);
dc.x = ww - dc.w;
if(dc.x < x) {
dc.x = x;
dc.w = ww - x;
}
drawtext(stext, dc.norm, false);
if(showclock) {
/* Draw Date Time */
timer = time(NULL);
date = localtime(&timer);
strftime(timestr, 255, clockfmt, date);
dc.w = TEXTW(timestr);
dc.x = ww - dc.w;
drawtext(timestr, dc.norm, false);
}
if((dc.w = dc.x - x) > bh) {
dc.x = x;
if(sel) {
drawtext(getclienttitle(sel->hwnd), dc.sel, false);
drawsquare(sel->isfixed, sel->isfloating, false, dc.sel);
}
else
drawtext(NULL, dc.norm, false);
}
ReleaseDC(barhwnd, dc.hdc);
}
void
drawsquare(bool filled, bool empty, bool invert, COLORREF col[ColLast]) {
static int size = 5;
RECT r = { .left = dc.x + 1, .top = dc.y + 1, .right = dc.x + size, .bottom = dc.y + size };
HBRUSH brush = CreateSolidBrush(col[invert ? ColBG : ColFG]);
SelectObject(dc.hdc, brush);
if(filled) {
FillRect(dc.hdc, &r, brush);
} else if(empty) {
FillRect(dc.hdc, &r, brush);
}
DeleteObject(brush);
}
void
drawtext(const char *text, COLORREF col[ColLast], bool invert) {
RECT r = { .left = dc.x, .top = dc.y, .right = dc.x + dc.w, .bottom = dc.y + dc.h };
HPEN pen = CreatePen(PS_SOLID, borderpx, selbordercolor);
HBRUSH brush = CreateSolidBrush(col[invert ? ColFG : ColBG]);
SelectObject(dc.hdc, pen);
SelectObject(dc.hdc, brush);
FillRect(dc.hdc, &r, brush);
DeleteObject(brush);
DeleteObject(pen);
SetBkMode(dc.hdc, TRANSPARENT);
SetTextColor(dc.hdc, col[invert ? ColBG : ColFG]);
HFONT font = (HFONT)GetStockObject(SYSTEM_FONT);
SelectObject(dc.hdc, font);
DrawText(dc.hdc, text, -1, &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
}
void
eprint(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
fflush(stderr);
va_end(ap);
}
void
setselected(Client *c) {
if(!c || !ISVISIBLE(c))
for(c = stack; c && !ISVISIBLE(c); c = c->snext);
if(sel && sel != c)
drawborder(sel, normbordercolor);
if(c) {
if(c->isurgent)
clearurgent(c);
detachstack(c);
attachstack(c);
drawborder(c, selbordercolor);
}
sel = c;
drawbar();
}
void
focus(Client *c) {
setselected(c);
if (sel)
SetForegroundWindow(sel->hwnd);
}
void
focusstack(const Arg *arg) {
Client *c = NULL, *i;
if(!sel)
return;
if (arg->i > 0) {
for(c = sel->next; c && !ISFOCUSABLE(c); c = c->next);
if(!c)
for(c = clients; c && !ISFOCUSABLE(c); c = c->next);
}
else {
for(i = clients; i != sel; i = i->next)
if(ISFOCUSABLE(i))
c = i;
if(!c)
for(; i; i = i->next)
if(ISFOCUSABLE(i))
c = i;
}
if(c) {
focus(c);
restack();
}
}
Client *
managechildwindows(Client *p) {
Client *c, *t;
EnumChildWindows(p->hwnd, scan, 0);
/* remove all child windows which were not part
* of the enumeration above.
*/
for(c = clients; c; ) {
if (c->parent == p->hwnd) {
/* XXX: ismanageable isn't that reliable or some
* windows change over time which means they
* were once reported as manageable but not
* this time so we also check if they are
* currently visible and if that's the case
* we keep them in our client list.
*/
if (!c->isalive && !IsWindowVisible(c->hwnd)) {
t = c->next;
unmanage(c);
c = t;
continue;
}
/* reset flag for next check */
c->isalive = false;
}
c = c->next;
}
return nextchild(p, clients);
}
Client *
getclient(HWND hwnd) {
Client *c;
for(c = clients; c; c = c->next)
if (c->hwnd == hwnd)
return c;
return NULL;
}
LPSTR
getclientclassname(HWND hwnd) {
static TCHAR buf[128];
GetClassName(hwnd, buf, sizeof buf);
return buf;
}
LPSTR
getclienttitle(HWND hwnd) {
static TCHAR buf[128];
GetWindowText(hwnd, buf, sizeof buf);
return buf;
}
HWND
getroot(HWND hwnd){
HWND parent, deskwnd = GetDesktopWindow();
while ((parent = GetWindow(hwnd, GW_OWNER)) != NULL && deskwnd != parent)
hwnd = parent;
return hwnd;
}
void
grabkeys(HWND hwnd) {
int i;
for (i = 0; i < LENGTH(keys); i++) {
RegisterHotKey(hwnd, i, keys[i].mod, keys[i].key);
}
}
bool
ismanageable(HWND hwnd){
if (getclient(hwnd))
return true;
HWND parent = GetParent(hwnd);
HWND owner = GetWindow(hwnd, GW_OWNER);
int style = GetWindowLong(hwnd, GWL_STYLE);
int exstyle = GetWindowLong(hwnd, GWL_EXSTYLE);
bool pok = (parent != 0 && ismanageable(parent));
bool istool = exstyle & WS_EX_TOOLWINDOW;
bool isapp = exstyle & WS_EX_APPWINDOW;
if (pok && !getclient(parent))
manage(parent);
debug("ismanageable: %s\n", getclienttitle(hwnd));
debug(" hwnd: %d\n", hwnd);
debug(" window: %d\n", IsWindow(hwnd));
debug(" visible: %d\n", IsWindowVisible(hwnd));
debug(" parent: %d\n", parent);
debug("parentok: %d\n", pok);
debug(" owner: %d\n", owner);
debug(" toolwin: %d\n", istool);
debug(" appwin: %d\n", isapp);
/* XXX: should we do this? */
if (GetWindowTextLength(hwnd) == 0) {
debug(" title: NULL\n");
debug(" manage: false\n");
return false;
}
if (style & WS_DISABLED) {
debug("disabled: true\n");
debug(" manage: false\n");
return false;
}
/*
* WS_EX_APPWINDOW
* Forces a top-level window onto the taskbar when
* the window is visible.
*
* WS_EX_TOOLWINDOW
* Creates a tool window; that is, a window intended
* to be used as a floating toolbar. A tool window
* has a title bar that is shorter than a normal
* title bar, and the window title is drawn using
* a smaller font. A tool window does not appear in
* the taskbar or in the dialog that appears when
* the user presses ALT+TAB. If a tool window has
* a system menu, its icon is not displayed on the
* title bar. However, you can display the system
* menu by right-clicking or by typing ALT+SPACE.
*/
if ((parent == 0 && IsWindowVisible(hwnd)) || pok) {
if ((!istool && parent == 0) || (istool && pok)) {
debug(" manage: true\n");
return true;
}
if (isapp && parent != 0) {
debug(" manage: true\n");
return true;
}
}
debug(" manage: false\n");
return false;
}
void
killclient(const Arg *arg) {
if(!sel)
return;
PostMessage(sel->hwnd, WM_CLOSE, 0, 0);
}
Client*
manage(HWND hwnd) {
static Client cz;
Client *c = getclient(hwnd);
if (c)
return c;
debug(" manage %s\n", getclienttitle(hwnd));
WINDOWINFO wi = {
.cbSize = sizeof(WINDOWINFO),
};
if (!GetWindowInfo(hwnd, &wi))
return NULL;
if(!(c = malloc(sizeof(Client))))
die("fatal: could not malloc() %u bytes\n", sizeof(Client));
*c = cz;
c->hwnd = hwnd;
c->threadid = GetWindowThreadProcessId(hwnd, NULL);
c->parent = GetParent(hwnd);
c->root = getroot(hwnd);
c->isalive = true;
static WINDOWPLACEMENT wp = {
.length = sizeof(WINDOWPLACEMENT),
.showCmd = SW_RESTORE,
};
if (IsWindowVisible(c->hwnd))
SetWindowPlacement(hwnd, &wp);
/* maybe we could also filter based on
* WS_MINIMIZEBOX and WS_MAXIMIZEBOX
*/
c->isfloating = (wi.dwStyle & WS_POPUP) ||
(!(wi.dwStyle & WS_MINIMIZEBOX) && !(wi.dwStyle & WS_MAXIMIZEBOX));
debug(" window style: %d\n", wi.dwStyle);
debug(" minimize: %d\n", wi.dwStyle & WS_MINIMIZEBOX);
debug(" maximize: %d\n", wi.dwStyle & WS_MAXIMIZEBOX);
debug(" popup: %d\n", wi.dwStyle & WS_POPUP);
debug(" isfloating: %d\n", c->isfloating);
applyrules(c);
if (!c->isfloating)
setborder(c, false);
if (c->isfloating && IsWindowVisible(hwnd)) {
debug(" new floating window: x: %d y: %d w: %d h: %d\n", wi.rcWindow.left, wi.rcWindow.top, wi.rcWindow.right - wi.rcWindow.left, wi.rcWindow.bottom - wi.rcWindow.top);
resize(c, wi.rcWindow.left, wi.rcWindow.top, wi.rcWindow.right - wi.rcWindow.left, wi.rcWindow.bottom - wi.rcWindow.top);
}
attach(c);
attachstack(c);
return c;
}
void
monocle(void) {
Client *c;
for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
resize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw);
}
}
void
movetonext(const Arg *arg) {
Client *p, *n;
if(!(p = clients))
return;
for(; p && (p->next != sel); p = p->next);
n = sel->next;
if(!n) {
/* sel is the last one */
zoom(NULL);
return;
}
sel->next = n->next;
n->next = sel;
if(!p) {
/* sel is the first one */
clients = n;
} else {
p->next = n;
}
arrange();
}
void
movetoprev(const Arg *arg) {
Client *pp, *p;
if(!(pp = clients) | !(p = pp->next))
return;
if(sel == pp) {
/*
* sel is the first one;
* there're at least 2 windows
*/
Client *l;
for(l = p; l->next; l = l->next);
l->next = sel;
sel->next = NULL;
clients = p;
} else if(sel == p) {
/* sel is the second one */
pp->next = sel->next; /* even if it equals NULL */
sel->next = pp;
clients = sel;
} else {
for(; p && (p->next != sel);
pp = pp->next, p = p->next);
p->next = sel->next;
sel->next = p;
pp->next = sel;
}
arrange();
}
Client *
nextchild(Client *p, Client *c) {
for(; c && c->parent != p->hwnd; c = c->next);
return c;
}
Client *
nexttiled(Client *c) {
for(; c && (c->isfloating || IsIconic(c->hwnd) || !ISVISIBLE(c) || !IsWindowVisible(c->hwnd)); c = c->next);
return c;
}
void
quit(const Arg *arg) {
PostMessage(dwmhwnd, WM_CLOSE, 0, 0);
}
void
resize(Client *c, int x, int y, int w, int h) {
if(w <= 0 && h <= 0) {
setvisibility(c->hwnd, false);
return;
}
if(x > sx + sw)
x = sw - WIDTH(c);
if(y > sy + sh)
y = sh - HEIGHT(c);
if(x + w + 2 * c->bw < sx)
x = sx;
if(y + h + 2 * c->bw < sy)
y = sy;
if(h < bh)
h = bh;
if(w < bh)
w = bh;
if(c->x != x || c->y != y || c->w != w || c->h != h) {
c->x = x;
c->y = y;
c->w = w;
c->h = h;
debug(" resize %d: %s: x: %d y: %d w: %d h: %d\n", c->hwnd, getclienttitle(c->hwnd), x, y, w, h);
SetWindowPos(c->hwnd, HWND_TOP, c->x, c->y, c->w, c->h, SWP_NOACTIVATE);
}
}
void
restack(void) {
}
LRESULT CALLBACK barhandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg) {
case WM_CREATE:
updatebar();
break;
case WM_PAINT: {
PAINTSTRUCT ps;
BeginPaint(hwnd, &ps);
drawbar();
EndPaint(hwnd, &ps);
break;
}
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
buttonpress(msg, &MAKEPOINTS(lParam));
break;
case WM_TIMER:
drawbar();
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg) {
case WM_CREATE:
break;
case WM_CLOSE:
cleanup();
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_HOTKEY:
if (wParam > 0 && wParam < LENGTH(keys)) {
keys[wParam].func(&(keys[wParam ].arg));
}
break;
default:
if (msg == shellhookid) { /* Handle the shell hook message */
Client *c = getclient((HWND)lParam);
switch (wParam & 0x7fff) {
/* The first two events are also trigger if windows
* are being hidden or shown because of a tag
* switch, therefore we ignore them in this case.
*/
case HSHELL_WINDOWCREATED:
debug("window created: %s\n", getclienttitle((HWND)lParam));
if (!c && ismanageable((HWND)lParam)) {
c = manage((HWND)lParam);
managechildwindows(c);
arrange();
}
break;
case HSHELL_WINDOWDESTROYED:
if (c) {
debug(" window %s: %s\n", c->ignore ? "hidden" : "destroyed", getclienttitle(c->hwnd));
if (!c->ignore)
unmanage(c);
else
c->ignore = false;
} else {
debug(" unmanaged window destroyed\n");
}
break;
case HSHELL_WINDOWACTIVATED:
debug(" window activated: %s || %d\n", c ? getclienttitle(c->hwnd) : "unknown", (HWND)lParam);
if (c) {
Client *t = sel;
managechildwindows(c);
setselected(c);
/* check if the previously selected
* window got minimized
*/
if (t && (t->isminimized = IsIconic(t->hwnd))) {
debug(" active window got minimized: %s\n", getclienttitle(t->hwnd));
arrange();
}
/* the newly focused window was minimized */
if (sel->isminimized) {
debug(" newly active window was minimized: %s\n", getclienttitle(sel->hwnd));
sel->isminimized = false;
zoom(NULL);
}
} else {
/* Some window don't seem to generate
* HSHELL_WINDOWCREATED messages therefore
* we check here whether we should manage
* the window or not.
*/
if (ismanageable((HWND)lParam)) {
c = manage((HWND)lParam);
managechildwindows(c);
setselected(c);
arrange();
}
}
break;
}
} else
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}
BOOL CALLBACK
scan(HWND hwnd, LPARAM lParam) {
Client *c = getclient(hwnd);
if (c)
c->isalive = true;
else if (ismanageable(hwnd))
manage(hwnd);
return TRUE;
}
void
drawborder(Client *c, COLORREF color) {
#if 0
HDC hdc = GetWindowDC(c->hwnd);
#if 0
/* this would be another way, but it uses standard sytem colors */
RECT area = { .left = 0, .top = 0, .right = c->w, .bottom = c->h };
DrawEdge(hdc, &area, BDR_RAISEDOUTER | BDR_SUNKENINNER, BF_RECT);
#else
HPEN pen = CreatePen(PS_SOLID, borderpx, color);
SelectObject(hdc, pen);
MoveToEx(hdc, 0, 0, NULL);
LineTo(hdc, c->w, 0);
LineTo(hdc, c->w, c->h);
LineTo(hdc, 0, c->h);
LineTo(hdc, 0, 0);
DeleteObject(pen);
#endif
ReleaseDC(c->hwnd, hdc);
#endif
}
void
setborder(Client *c, bool border) {
if (border) {