Getting rid of some global variables
They are local now.
This commit is contained in:
phillbush
parent
571d99e165
commit
257e42cc23
217
xmenu.c
217
xmenu.c
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@ -34,16 +34,10 @@ struct DC {
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};
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/* menu geometry structure */
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struct MenuGeometry {
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int itemb; /* item border */
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int itemw; /* item width */
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int itemh; /* item height */
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int border; /* window border width */
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int separator; /* menu separator width */
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};
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/* screen geometry structure */
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struct ScreenGeometry {
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struct Geometry {
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int border; /* window border width */
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int separator; /* menu separator width */
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int itemw, itemh; /* item width and height */
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int cursx, cursy; /* cursor position */
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int screenw, screenh; /* screen width and height */
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};
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@ -73,48 +67,44 @@ struct Menu {
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Window win; /* menu window to map on the screen */
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};
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/* function declarations */
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static void getcolor(const char *s, XftColor *color);
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/* functions declarations */
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static void getresources(void);
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static void getcolor(const char *s, XftColor *color);
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static void setupdc(void);
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static void setupgeom(void);
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static void calcgeom(void);
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static struct Item *allocitem(const char *label, const char *output);
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static struct Menu *allocmenu(struct Menu *parent, struct Item *list, unsigned level);
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static struct Menu *getmenu(Window win);
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static struct Item *getitem(struct Menu *menu, int y);
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static void drawseparator(struct Menu *menu, struct Item *item);
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static void drawitem(struct Menu *menu, struct Item *item, XftColor *color);
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static void drawmenu(void);
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static void calcscreengeom(void);
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static struct Menu *parsestdin(void);
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static void calcmenu(struct Menu *menu);
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static void grabpointer(void);
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static void grabkeyboard(void);
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static void setcurrmenu(struct Menu *currmenu_new);
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static void parsestdin(void);
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static void run(void);
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static struct Menu *getmenu(struct Menu *currmenu, Window win);
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static struct Item *getitem(struct Menu *menu, int y);
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static void mapmenu(struct Menu *currmenu);
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static void drawseparator(struct Menu *menu, struct Item *item);
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static void drawitem(struct Menu *menu, struct Item *item, XftColor *color);
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static void drawmenu(struct Menu *currmenu);
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static struct Item *itemcycle(struct Menu *currmenu, int direction);
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static void run(struct Menu *currmenu);
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static void freewindow(struct Menu *menu);
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static void cleanup(void);
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static void cleanup(struct Menu *rootmenu);
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static void usage(void);
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/* X variables */
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/* global variables (X stuff and geometries) */
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static Colormap colormap;
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static Display *dpy;
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static Visual *visual;
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static Window rootwin;
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static int screen;
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static struct DC dc;
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static struct ScreenGeometry screengeom;
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/* menu variables */
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static struct Menu *rootmenu = NULL;
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static struct Menu *currmenu = NULL;
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static struct MenuGeometry geom;
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static struct Geometry geom;
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#include "config.h"
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int
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main(int argc, char *argv[])
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{
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struct Menu *rootmenu;
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int ch;
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while ((ch = getopt(argc, argv, "")) != -1) {
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@ -138,13 +128,12 @@ main(int argc, char *argv[])
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/* setup */
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getresources();
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setupdc();
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setupgeom();
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calcgeom();
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/* generate menus and recalculate them */
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parsestdin();
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rootmenu = parsestdin();
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if (rootmenu == NULL)
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errx(1, "no menu generated");
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calcscreengeom();
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calcmenu(rootmenu);
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/* grab mouse and keyboard */
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@ -152,9 +141,9 @@ main(int argc, char *argv[])
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grabkeyboard();
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/* run event loop */
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run();
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run(rootmenu);
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cleanup();
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cleanup(rootmenu);
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return 0;
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}
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@ -232,11 +221,17 @@ setupdc(void)
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dc.gc = XCreateGC(dpy, rootwin, 0, NULL);
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}
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/* init menu geometry values */
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/* calculate menu and screen geometry */
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static void
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setupgeom(void)
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calcgeom(void)
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{
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geom.itemb = padding_pixels;
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Window w1, w2; /* unused variables */
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int a, b; /* unused variables */
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unsigned mask; /* unused variable */
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XQueryPointer(dpy, rootwin, &w1, &w2, &geom.cursx, &geom.cursy, &a, &b, &mask);
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geom.screenw = DisplayWidth(dpy, screen);
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geom.screenh = DisplayHeight(dpy, screen);
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geom.itemh = dc.font->height + padding_pixels * 2;
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geom.itemw = width_pixels;
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geom.border = border_pixels;
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@ -307,9 +302,10 @@ allocmenu(struct Menu *parent, struct Item *list, unsigned level)
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}
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/* create menus and items from the stdin */
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static void
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static struct Menu *
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parsestdin(void)
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{
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struct Menu *rootmenu;
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char *s, buf[BUFSIZ];
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char *label, *output;
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unsigned level = 0;
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@ -320,6 +316,8 @@ parsestdin(void)
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struct Menu *menu; /* dummy menu for for loops */
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size_t count = 0; /* number of items in the current menu */
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rootmenu = NULL;
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while (fgets(buf, BUFSIZ, stdin) != NULL) {
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level = 0;
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s = buf;
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@ -397,19 +395,8 @@ parsestdin(void)
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}
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count++;
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}
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}
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/* calculate screen geometry */
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static void
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calcscreengeom(void)
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{
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Window w1, w2; /* unused variables */
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int a, b; /* unused variables */
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unsigned mask; /* unused variable */
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XQueryPointer(dpy, rootwin, &w1, &w2, &screengeom.cursx, &screengeom.cursy, &a, &b, &mask);
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screengeom.screenw = DisplayWidth(dpy, screen);
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screengeom.screenh = DisplayHeight(dpy, screen);
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return rootmenu;
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}
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/* recursivelly calculate menu geometry and set window hints */
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@ -440,27 +427,27 @@ calcmenu(struct Menu *menu)
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/* calculate menu's x and y positions */
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if (menu->parent == NULL) { /* if root menu, calculate in respect to cursor */
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if (screengeom.screenw - screengeom.cursx >= menu->w)
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menu->x = screengeom.cursx;
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else if (screengeom.cursx > menu->w)
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menu->x = screengeom.cursx - menu->w;
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if (geom.screenw - geom.cursx >= menu->w)
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menu->x = geom.cursx;
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else if (geom.cursx > menu->w)
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menu->x = geom.cursx - menu->w;
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if (screengeom.screenh - screengeom.cursy >= menu->h)
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menu->y = screengeom.cursy;
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else if (screengeom.screenh > menu->h)
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menu->y = screengeom.screenh - menu->h;
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if (geom.screenh - geom.cursy >= menu->h)
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menu->y = geom.cursy;
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else if (geom.screenh > menu->h)
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menu->y = geom.screenh - menu->h;
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} else { /* else, calculate in respect to parent menu */
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if (screengeom.screenw - (menu->parent->x + menu->parent->w + geom.border) >= menu->w)
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if (geom.screenw - (menu->parent->x + menu->parent->w + geom.border) >= menu->w)
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menu->x = menu->parent->x + menu->parent->w + geom.border;
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else if (menu->parent->x > menu->w + geom.border)
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menu->x = menu->parent->x - menu->w - geom.border;
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if (screengeom.screenh - (menu->caller->y + menu->parent->y) > menu->h)
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if (geom.screenh - (menu->caller->y + menu->parent->y) > menu->h)
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menu->y = menu->caller->y + menu->parent->y;
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else if (screengeom.screenh - menu->parent->y > menu->h)
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else if (geom.screenh - menu->parent->y > menu->h)
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menu->y = menu->parent->y;
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else if (screengeom.screenh > menu->h)
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menu->y = screengeom.screenh - menu->h;
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else if (geom.screenh > menu->h)
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menu->y = geom.screenh - menu->h;
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}
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/* update menu geometry */
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@ -524,7 +511,7 @@ grabkeyboard(void)
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/* get menu of given window */
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static struct Menu *
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getmenu(Window win)
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getmenu(struct Menu *currmenu, Window win)
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{
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struct Menu *menu;
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@ -551,37 +538,35 @@ getitem(struct Menu *menu, int y)
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return NULL;
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}
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/* set currentmenu to menu, umap previous menus and map current menu and its parents */
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/* umap previous menus and map current menu and its parents */
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static void
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setcurrmenu(struct Menu *currmenu_new)
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mapmenu(struct Menu *currmenu)
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{
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static struct Menu *prevmenu = NULL;
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struct Menu *menu, *menu_;
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struct Item *item;
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struct Menu *lcamenu; /* lowest common ancestor menu */
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unsigned minlevel; /* level of the closest to root menu */
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unsigned maxlevel; /* level of the closest to root menu */
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/* do not update currmenu to itself */
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if (currmenu_new == currmenu)
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/* do not remap current menu if it wasn't updated*/
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if (prevmenu == currmenu)
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return;
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/* if there was no currmenu, skip calculations */
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if (currmenu == NULL) {
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currmenu = currmenu_new;
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/* if this is the first time mapping, skip calculations */
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if (prevmenu == NULL) {
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XMapWindow(dpy, currmenu->win);
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return;
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goto done;
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}
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/* find lowest common ancestor menu */
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lcamenu = rootmenu;
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minlevel = MIN(currmenu_new->level, currmenu->level);
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maxlevel = MAX(currmenu_new->level, currmenu->level);
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if (currmenu_new->level == maxlevel) {
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menu = currmenu_new;
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menu_ = currmenu;
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} else {
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minlevel = MIN(currmenu->level, prevmenu->level);
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maxlevel = MAX(currmenu->level, prevmenu->level);
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if (currmenu->level == maxlevel) {
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menu = currmenu;
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menu_ = currmenu_new;
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menu_ = prevmenu;
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} else {
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menu = prevmenu;
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menu_ = currmenu;
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}
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while (menu->level > minlevel)
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menu = menu->parent;
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@ -592,18 +577,18 @@ setcurrmenu(struct Menu *currmenu_new)
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lcamenu = menu;
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/* unmap menus from currmenu (inclusive) until lcamenu (exclusive) */
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for (menu = currmenu; menu != lcamenu; menu = menu->parent) {
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for (menu = prevmenu; menu != lcamenu; menu = menu->parent) {
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menu->selected = NULL;
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XUnmapWindow(dpy, menu->win);
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}
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currmenu = currmenu_new;
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/* map menus from currmenu (inclusive) until lcamenu (exclusive) */
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item = NULL;
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for (menu = currmenu; menu != lcamenu; menu = menu->parent) {
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XMapWindow(dpy, menu->win);
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}
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done:
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prevmenu = currmenu;
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}
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/* draw separator item */
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@ -627,15 +612,15 @@ drawitem(struct Menu *menu, struct Item *item, XftColor *color)
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int x, y;
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x = 0 + dc.font->height;
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y = item->y + dc.font->height + geom.itemb / 2;
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y = item->y + item->h/2 + dc.font->ascent/2 - 1;
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XSetForeground(dpy, dc.gc, color[ColorFG].pixel);
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XftDrawStringUtf8(menu->draw, &color[ColorFG], dc.font,
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x, y, item->label, item->labellen);
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/* draw triangle, if item contains a submenu */
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if (item->submenu != NULL) {
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x = menu->w - dc.font->height + geom.itemb - 1;
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y = item->y + geom.itemh/2 - triangle_height/2 - 1;
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x = menu->w - dc.font->height/2 - triangle_width/2;
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y = item->y + item->h/2 - triangle_height/2 - 1;
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XPoint triangle[] = {
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{x, y},
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@ -651,7 +636,7 @@ drawitem(struct Menu *menu, struct Item *item, XftColor *color)
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/* draw items of the current menu and of its ancestors */
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static void
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drawmenu(void)
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drawmenu(struct Menu *currmenu)
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{
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struct Menu *menu;
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struct Item *item;
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@ -684,7 +669,7 @@ drawmenu(void)
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/* cycle through the items; non-zero direction is next, zero is prev */
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static struct Item *
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itemcycle(int direction)
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itemcycle(struct Menu *currmenu, int direction)
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{
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struct Item *item;
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struct Item *lastitem;
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@ -725,7 +710,7 @@ itemcycle(int direction)
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/* run event loop */
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static void
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run(void)
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run(struct Menu *currmenu)
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{
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struct Menu *menu;
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struct Item *item;
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@ -733,31 +718,34 @@ run(void)
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KeySym ksym;
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XEvent ev;
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setcurrmenu(rootmenu);
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mapmenu(currmenu);
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while (!XNextEvent(dpy, &ev)) {
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switch(ev.type) {
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case Expose:
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if (ev.xexpose.count == 0)
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drawmenu();
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drawmenu(currmenu);
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break;
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case MotionNotify:
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menu = getmenu(ev.xbutton.window);
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menu = getmenu(currmenu, ev.xbutton.window);
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item = getitem(menu, ev.xbutton.y);
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if (menu == NULL || item == NULL)
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break;
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if (previtem != item) {
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menu->selected = item;
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if (item->submenu != NULL)
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setcurrmenu(item->submenu);
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else
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setcurrmenu(menu);
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previtem = item;
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drawmenu();
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menu->selected = item;
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if (item->submenu != NULL) {
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currmenu = item->submenu;
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currmenu->selected = NULL;
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} else {
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currmenu = menu;
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}
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mapmenu(currmenu);
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drawmenu(currmenu);
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}
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break;
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case ButtonRelease:
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menu = getmenu(ev.xbutton.window);
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menu = getmenu(currmenu, ev.xbutton.window);
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item = getitem(menu, ev.xbutton.y);
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if (menu == NULL || item == NULL)
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break;
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@ -765,16 +753,17 @@ selectitem:
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if (item->label == NULL)
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break; /* ignore separators */
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if (item->submenu != NULL) {
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setcurrmenu(item->submenu);
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currmenu = item->submenu;
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} else {
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printf("%s\n", item->output);
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return;
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}
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mapmenu(currmenu);
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currmenu->selected = currmenu->list;
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drawmenu();
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drawmenu(currmenu);
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break;
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case ButtonPress:
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menu = getmenu(ev.xbutton.window);
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menu = getmenu(currmenu, ev.xbutton.window);
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if (menu == NULL)
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return;
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break;
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@ -782,7 +771,7 @@ selectitem:
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ksym = XkbKeycodeToKeysym(dpy, ev.xkey.keycode, 0, 0);
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/* esc closes xmenu when current menu is the root menu */
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if (ksym == XK_Escape && currmenu == rootmenu)
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if (ksym == XK_Escape && currmenu->parent == NULL)
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return;
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/* Shift-Tab = ISO_Left_Tab */
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@ -792,9 +781,9 @@ selectitem:
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/* cycle through menu */
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item = NULL;
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if (ksym == XK_ISO_Left_Tab || ksym == XK_Up) {
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item = itemcycle(ITEMPREV);
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item = itemcycle(currmenu, ITEMPREV);
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} else if (ksym == XK_Tab || ksym == XK_Down) {
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item = itemcycle(ITEMNEXT);
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item = itemcycle(currmenu, ITEMNEXT);
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} else if ((ksym == XK_Return || ksym == XK_Right) &&
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currmenu->selected != NULL) {
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item = currmenu->selected;
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@ -802,16 +791,17 @@ selectitem:
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} else if ((ksym == XK_Escape || ksym == XK_Left) &&
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currmenu->parent != NULL) {
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item = currmenu->parent->selected;
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setcurrmenu(currmenu->parent);
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currmenu = currmenu->parent;
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mapmenu(currmenu);
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} else
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break;
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currmenu->selected = item;
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drawmenu();
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drawmenu(currmenu);
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break;
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case LeaveNotify:
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previtem = NULL;
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currmenu->selected = NULL;
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drawmenu();
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drawmenu(currmenu);
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break;
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}
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}
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@ -834,8 +824,11 @@ freewindow(struct Menu *menu)
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/* cleanup and exit */
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static void
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cleanup(void)
|
||||
cleanup(struct Menu *rootmenu)
|
||||
{
|
||||
XUngrabPointer(dpy, CurrentTime);
|
||||
XUngrabKeyboard(dpy, CurrentTime);
|
||||
|
||||
freewindow(rootmenu);
|
||||
|
||||
XftColorFree(dpy, visual, colormap, &dc.normal[ColorBG]);
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user