mirror of
https://github.com/0intro/wmii
synced 2024-12-25 04:46:51 +03:00
285 lines
5.7 KiB
C
285 lines
5.7 KiB
C
/*
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* (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
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* See LICENSE file for license details.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <cext.h>
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#include <X11/keysym.h>
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#include <X11/Xutil.h>
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#include "blitz.h"
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static void
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xchangegc(BlitzInput *i, BlitzColor *c, Bool invert)
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{
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XGCValues gcv;
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if(invert) {
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gcv.foreground = c->bg;
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gcv.background = c->fg;
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}
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else {
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gcv.foreground = c->fg;
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gcv.background = c->bg;
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}
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if(i->font->set)
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XChangeGC(i->blitz->dpy, i->gc, GCForeground | GCBackground, &gcv);
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else {
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gcv.font = i->font->xfont->fid;
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XChangeGC(i->blitz->dpy, i->gc, GCForeground | GCBackground | GCFont, &gcv);
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}
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}
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static void
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xdrawtextpart(BlitzInput *i, char *start, char *end,
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unsigned int *xoff, unsigned int yoff)
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{
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unsigned int len;
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if(!start || !(len = end - start))
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return;
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if(i->font->set)
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XmbDrawImageString(i->blitz->dpy, i->drawable, i->font->set, i->gc,
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*xoff, yoff, start, len);
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else
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XDrawImageString(i->blitz->dpy, i->drawable, i->gc, *xoff, yoff,
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start, len);
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*xoff += blitz_textwidth_l(i->font, start, len);
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}
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void
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blitz_setinput(BlitzInput *i, char *text)
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{
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if(!text) {
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if(i->size) {
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i->len = 0;
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i->text[i->len] = 0;
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i->curstart = i->curend = i->text;
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}
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return;
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}
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i->len = strlen(text);
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if(i->len + 1 > i->size) {
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i->size = 2 * i->len + 1;
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i->text = realloc(i->text, i->size);
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}
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memcpy(i->text, text, i->len);
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i->text[i->len] = 0;
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i->curstart = i->curend = i->text + i->len;
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}
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static char *
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curend(BlitzInput *i)
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{
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if(i->curstart < i->curend)
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return i->curend;
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else
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return i->curstart;
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}
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static char *
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curstart(BlitzInput *i)
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{
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if(i->curstart < i->curend)
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return i->curstart;
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else
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return i->curend;
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}
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void
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blitz_draw_input(BlitzInput *i)
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{
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char *start, *end;
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unsigned int xoff, yoff, xcursor, h;
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if (!i)
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return;
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blitz_drawbg(i->blitz->dpy, i->drawable, i->gc, i->rect, i->color, True);
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h = (i->font->ascent + i->font->descent);
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yoff = i->rect.y + (i->rect.height - h) / 2 + i->font->ascent;
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xcursor = xoff = i->rect.x + i->rect.height / 2;
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start = curstart(i);
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end = curend(i);
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/* draw normal text */
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xchangegc(i, &i->color, False);
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xdrawtextpart(i, i->text, start, &xoff, yoff);
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xcursor = xoff;
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/* draw sel text */
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xchangegc(i, &i->color, True);
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xdrawtextpart(i, start, end, &xoff, yoff);
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/* draw remaining normal text */
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xchangegc(i, &i->color, False);
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xdrawtextpart(i, end, i->text + i->len, &xoff, yoff);
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/* draw cursor */
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if(!start && !end)
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xcursor = xoff;
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if(start == end)
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blitz_drawcursor(i->blitz->dpy, i->drawable, i->gc,
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xcursor, yoff - h + 2, h - 1, i->color);
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}
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Bool
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blitz_ispointinrect(int x, int y, XRectangle * r)
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{
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return (x >= r->x) && (x <= r->x + r->width)
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&& (y >= r->y) && (y <= r->y + r->height);
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}
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static char *
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xcharof(BlitzInput *i, int x, char *start, unsigned int len)
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{
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unsigned int tw;
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while((len /= 2)) {
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tw = blitz_textwidth_l(i->font, start, len);
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if(x >= tw) {
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x -= tw;
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start += len;
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len = strlen(start);
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}
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}
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return start; /* found */
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}
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static char *
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charof(BlitzInput *i, int x, int y)
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{
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if(!i->text || !blitz_ispointinrect(x, y, &i->rect))
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return nil;
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/* normalize and check x */
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if((x -= (i->rect.x + i->rect.height / 2)) < 0)
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return i->text;
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else if(x > blitz_textwidth_l(i->font, i->text, i->len))
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return i->text + i->len;
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return xcharof(i, x, i->text, i->len);
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}
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Bool
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blitz_bpress_input(BlitzInput *i, int x, int y)
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{
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char *ostart, *oend;
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if(!(i->drag = blitz_ispointinrect(x, y, &i->rect)))
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return False;
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ostart = i->curstart;
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oend = i->curend;
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i->curstart = i->curend = charof(i, x, y);
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return (i->curstart == ostart) && (i->curend == oend);
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}
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Bool
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blitz_brelease_input(BlitzInput *i, int x, int y)
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{
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char *oend;
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if(!(i->drag = blitz_ispointinrect(x, y, &i->rect)))
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return False;
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oend = i->curend;
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i->curend = charof(i, x, y);
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i->drag = False;
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return i->curend == oend;
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}
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Bool
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blitz_bmotion_input(BlitzInput *i, int x, int y)
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{
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char *oend;
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Bool focus;
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focus = blitz_ispointinrect(x, y, &i->rect);
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if(focus)
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XSetInputFocus(i->blitz->dpy, i->win,
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RevertToPointerRoot, CurrentTime);
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if(!i->drag || !(i->drag = focus))
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return False;
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oend = i->curend;
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i->curend = charof(i, x, y);
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return i->curend == oend;
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}
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Bool
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blitz_kpress_input(BlitzInput *i, KeySym k, char *ks)
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{
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char *start, *end;
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unsigned int len;
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int s, e;
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start = curstart(i);
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end = curend(i);
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if(IsCursorKey(k)) {
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switch(k) {
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case XK_Left:
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if(start != end)
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i->curstart = i->curend = start;
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else if(start > i->text)
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i->curstart = i->curend = --start;
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else
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i->curstart = i->curend = i->text;
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return True;
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case XK_Right:
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if(start != end)
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i->curstart = i->curend = end;
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else if(start < i->text + i->len)
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i->curstart = i->curend = ++start;
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else
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i->curstart = i->curend = i->text + i->len;
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return True;
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}
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}
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else {
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switch(k) {
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case XK_BackSpace:
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if(!start)
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return False;
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else if((start == end) && (start != i->text)) {
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i->curstart = i->curend = --start;
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memmove(start, start + 1, strlen(start + 1));
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i->len--;
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}
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else {
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i->curstart = i->curend = start;
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memmove(start, end, strlen(end));
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i->len -= (end - start);
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}
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i->text[i->len] = 0;
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return True;
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default:
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len = strlen(ks);
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if(!start) {
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blitz_setinput(i, ks);
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return True;
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}
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i->len = i->len - (end - start) + len;
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if(i->len + 1 > i->size) {
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s = start - i->text;
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e = end - i->text;
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i->size = 2 * i->len + 1;
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i->text = realloc(i->text, i->size);
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start = i->text + s;
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end = i->text + e;
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}
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memmove(start + len, end, strlen(end));
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memcpy(start, ks, len);
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i->curstart = i->curend = start + len;
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i->text[i->len] = 0;
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return True;
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}
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}
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return False;
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}
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