6be057f060
getting the width of a string is an O(n) operation, and in many cases users only care about getting the width upto a certain number. instead of calling drw_fontset_getwidth() and *then* clamping the result, this patch introduces drw_fontset_getwidth_clamp() function, similar to strnlen(), which will stop once we reach n. the `invert` parameter was overloaded internally to preserve the API, however library users should be calling drw_fontset_getwidth_clamp() and not depend upon internal behavior of drw_text().
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/* See LICENSE file for copyright and license details. */
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typedef struct {
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Cursor cursor;
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} Cur;
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typedef struct Fnt {
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Display *dpy;
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unsigned int h;
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XftFont *xfont;
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FcPattern *pattern;
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struct Fnt *next;
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} Fnt;
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enum { ColFg, ColBg }; /* Clr scheme index */
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typedef XftColor Clr;
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typedef struct {
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unsigned int w, h;
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Display *dpy;
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int screen;
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Window root;
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Drawable drawable;
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GC gc;
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Clr *scheme;
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Fnt *fonts;
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} Drw;
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/* Drawable abstraction */
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Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
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void drw_resize(Drw *drw, unsigned int w, unsigned int h);
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void drw_free(Drw *drw);
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/* Fnt abstraction */
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Fnt *drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount);
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void drw_fontset_free(Fnt* set);
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unsigned int drw_fontset_getwidth(Drw *drw, const char *text);
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unsigned int drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n);
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void drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h);
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/* Colorscheme abstraction */
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void drw_clr_create(Drw *drw, Clr *dest, const char *clrname);
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Clr *drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount);
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/* Cursor abstraction */
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Cur *drw_cur_create(Drw *drw, int shape);
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void drw_cur_free(Drw *drw, Cur *cursor);
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/* Drawing context manipulation */
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void drw_setfontset(Drw *drw, Fnt *set);
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void drw_setscheme(Drw *drw, Clr *scm);
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/* Drawing functions */
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void drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert);
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int drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, const char *text, int invert);
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/* Map functions */
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void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);
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