spmenu/libs/draw.c

void
drawhighlights(struct item *item, int x, int y, int w)
{
	int i, indent;
	char *highlight;
	char c;

    // limitation in order to prevent highlighting from drawing when the text isn't visible
    if (columns > 5 && lines > 1) return;

	char *itemtext = item->text;

	if (!(strlen(itemtext) && strlen(text))) return;

	drw_setscheme(drw, scheme[item == sel
	                   ? SchemeSelHighlight
	                   : SchemeNormHighlight]);
	for (i = 0, highlight = itemtext; *highlight && text[i];) {
        if (((fuzzy && !fstrncmp(&(*highlight), &text[i], 1)) || (!fuzzy && *highlight == text[i]))) {
			c = *highlight;
			*highlight = '\0';
			indent = TEXTW(itemtext) - lrpad;
			*highlight = c;

			// highlight character
			c = highlight[1];
			highlight[1] = '\0';
			drw_text(
				drw,
				x + indent + (lrpad / 2),
				y,
				MIN(w - indent - lrpad, TEXTW(highlight) - lrpad),
				bh, 0, highlight, 0, pango_highlight ? True : False);
			highlight[1] = c;
			i++;
		}
		highlight++;
	}
}

int
drawitemtext(struct item *item, int x, int y, int w)
{
    char buffer[MAXITEMLENGTH]; // buffer containing item text
    Clr scm[2]; // color scheme
    int leftpadding = lrpad / 2; // padding
    int wr, rd; // character
	int fg = 7; // foreground
	int bg = 0; // background
    int bgfg = 0; // both
    int ignore = 0; // ignore colors
    int skiphighlight = 0; // skip highlighting

    // memcpy the correct scheme
    if (item == sel) {
        memcpy(scm, scheme[SchemeItemSel], sizeof(scm));

        if (item->hp)
            memcpy(scm, scheme[SchemeItemSelPri], sizeof(scm));
    } else {
        memcpy(scm, scheme[SchemeItemNorm], sizeof(scm));

        if (item->hp)
            memcpy(scm, scheme[SchemeItemNormPri], sizeof(scm));
    }

    // don't color
    if (!coloritems) memcpy(scm, scheme[SchemeItemNorm], sizeof(scm));

    drw_setscheme(drw, scm); // set scheme

    // parse item text
	for (wr = 0, rd = 0; item->text[rd]; rd++) {
		if (item->text[rd] == '' && item->text[rd + 1] == '[') {
			size_t alen = strspn(item->text + rd + 2, "0123456789;");
			if (item->text[rd + alen + 2] == 'm') { // last character in sequence is always 'm'
				buffer[wr] = '\0';

                apply_fribidi(buffer);
				drw_text(drw, x, y, MIN(w, TEXTW(buffer) - lrpad) + leftpadding, bh, leftpadding, isrtl ? fribidi_text : buffer, 0, pango_item ? True : False);

                // position and width
				x += MIN(w, TEXTW(buffer) - lrpad) + leftpadding;
                w -= MIN(w, TEXTW(buffer) - lrpad) + leftpadding;

                // no highlighting if colored text
                skiphighlight = 1;
                leftpadding = 0;

				char *character = item->text + rd + 1; // current character

                // parse hex colors in scm, m is always the last character
				while (*character != 'm') {
					unsigned nextchar = strtoul(character + 1, &character, 10);
                    if (ignore)
						continue;
					if (bgfg) {
						if (bgfg < 4 && nextchar == 5) {
							bgfg <<= 1;
							continue;
						}
						if (bgfg == 4)
							scm[0] = textclrs[fg = nextchar];
						else if (bgfg == 6)
							scm[1] = textclrs[bg = nextchar];
						ignore = 1;

						continue;
					}

					if (nextchar == 1) {
						fg |= 8;
						scm[0] = textclrs[fg];
					} else if (nextchar == 22) {
						fg &= ~8;
						scm[0] = textclrs[fg];
					} else if (nextchar >= 30 && nextchar <= 37) {
						fg = nextchar % 10 | (fg & 8);
						scm[0] = textclrs[fg];
                    } else if (nextchar == 38) {
						bgfg = 2;
					} else if (nextchar >= 40 && nextchar <= 47) {
						bg = nextchar % 10;
						scm[1] = textclrs[bg];
					} else if (nextchar == 48) {
                        bgfg = 3;
                    }
				}

				rd += alen + 2;
				wr = 0;

				drw_setscheme(drw, scm); // set scheme

				continue;
			}
		}

		buffer[wr++] = item->text[rd];
	}

	buffer[wr] = '\0';

    // now draw any non-colored text
    apply_fribidi(buffer);
	int r = drw_text(drw, x, y, w, bh, leftpadding, isrtl ? fribidi_text : buffer, 0, pango_item ? True : False);
    if (!hidehighlight && !skiphighlight) drawhighlights(item, x, y, w);

    // copy current buffer to item->clntext instead of item->text, this way SGR sequences aren't drawn
    item->clntext = malloc(sizeof(buffer));
    memcpy(item->clntext, buffer, sizeof(buffer));

    return r;
}

int
drawitem(int x, int y, int w)
{
	struct item *item;

    int numberWidth = 0;
    int modeWidth = 0;
    int rarrowWidth = 0;

    // add width
    if (!hidemode) modeWidth = pango_mode ? TEXTWM(modetext) : TEXTW(modetext);
    if (!hiderarrow) rarrowWidth = pango_rightarrow ? TEXTWM(rightarrow) : TEXTW(rightarrow);
    if (!hidematchcount) numberWidth = pango_numbers ? TEXTWM(numbers) : TEXTW(numbers);

        // mode indicator is always going to be at the right
        if (hidemode) {
            numberWidth += 2 * sp + borderwidth;
        } else {
            modeWidth += 2 * sp + borderwidth;
        }

    #if USEIMAGE
    int ox = 0; // original x position
    #endif

    // draw items and image
	if (lines > 0) {
		int i = 0;
        int rx = 0;

        // draw image first
        #if USEIMAGE
        if (!hideimage && longestedge != 0) {
            rx = ox;
            rx += (imagegaps * 2) + imagewidth;
        } else
        #endif
            if (!indentitems) {
                rx = 0;
            } else {
                rx = x;
            }

		for (item = curr; item != next; item = item->right, i++) {
			drawitemtext(
				item,
				rx + ((i / lines) *  ((mw - rx) / columns)),
				y + (((i % lines) + 1) * bh),
				(mw - rx) / columns
			);
        }

    // horizontal list
	} else if (matches) {
		x += inputw;

        drawlarrow(x, y, w);

		for (item = curr; item != next; item = item->right) // draw items
            x = drawitemtext(item, x, 0, MIN(pango_item ? TEXTWM(item->text) : TEXTW(item->text), mw - x - rarrowWidth - numberWidth - modeWidth));

        drawrarrow(x, y, w, numberWidth, modeWidth, rarrowWidth);
	}

    return x;
}

int
drawprompt(int x, int y, int w)
{
	if (prompt && *prompt && !hideprompt) {
		drw_setscheme(drw, scheme[SchemePrompt]);

		x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0, pango_prompt ? True : False);

        if (!hidepowerline) {
            drw_settrans(drw, scheme[SchemePrompt], scheme[SchemeMenu]);
            drw_arrow(drw, x, 0, plw, bh, 1, 0);

            x += plw;
        }
	}

    return x;
}

int
drawinput(int x, int y, int w)
{
	char *censort; // censor text (password)
	unsigned int curpos = 0;
    int fh = drw->font->h;

    // draw input
	w = (lines > 0 || !matches) ? mw - x : inputw;
	drw_setscheme(drw, scheme[SchemeInput]);
	if (passwd && !hideprompt) {
	    censort = ecalloc(1, sizeof(text));
		memset(censort, (int)password, strlen(text));

        apply_fribidi(censort);
		drw_text(drw, x, 0, w, bh, lrpad / 2, isrtl ? fribidi_text : censort, 0, pango_password ? True : False);

	    curpos = TEXTW(censort) - TEXTW(&text[cursor]);

        free(censort);
	} else if (!passwd && !hideprompt) {
        apply_fribidi(text);
        drw_text(drw, x, 0, w, bh, lrpad / 2, isrtl ? fribidi_text : text, 0, pango_input ? True : False);

	    curpos = TEXTW(text) - TEXTW(&text[cursor]);
    }

	if ((curpos += lrpad / 2 - 1) < w && !hidecursor && !hideprompt) {
		drw_setscheme(drw, scheme[SchemeCaret]);
		drw_rect(drw, x + curpos, 2 + (bh - fh) / 2, 2, fh - 4, 1, 0);
	}

    return x;
}

int
drawlarrow(int x, int y, int w)
{
    if (hidelarrow) {
        return x;
    }

	if (curr->left) { // draw left arrow
		drw_setscheme(drw, scheme[SchemeLArrow]);
		drw_text(drw, x, 0, w, bh, lrpad / 2, leftarrow, 0, pango_leftarrow ? True : False);
	}

	x += w;

    return x;
}

int
drawrarrow(int x, int y, int w, int numberWidth, int modeWidth, int rarrowWidth)
{
	if (next && !hiderarrow) { // draw right arrow
		w = rarrowWidth;
		drw_setscheme(drw, scheme[SchemeRArrow]);

        drw_text(drw, mw - w, 0, w, bh, lrpad / 2, rightarrow, 0, pango_rightarrow ? True : False);
	}

    return x;
}

int
drawnumber(int x, int y, int w, int numberWidth, int modeWidth)
{
    if (!hidematchcount) { // draw match count
        drw_setscheme(drw, scheme[SchemeNumber]);

        drw_text(drw, mw - numberWidth - modeWidth, 0, numberWidth, bh, lrpad / 2 + plw / 2, numbers, 0, pango_numbers ? True : False);

        // draw powerline for match count
        if (!hidepowerline) {
            drw_settrans(drw, scheme[SchemeNumber], scheme[SchemeMenu]);
            drw_arrow(drw, mw - numberWidth - modeWidth, 0, plw, bh, 0, 0);

            x += plw;
        }
    }

    return x;
}

int
drawmode(int x, int y, int w, int numberWidth, int modeWidth)
{
    if (!hidemode) { // draw mode indicator
        drw_setscheme(drw, scheme[SchemeMode]);

        drw_text(drw, mw - modeWidth, 0, modeWidth, bh, lrpad / 2 + plw / 2, modetext, 0, pango_mode ? True : False);

        // draw powerline for match count
        if (!hidepowerline) {
            drw_settrans(drw, scheme[SchemeMode], hidematchcount ? scheme[SchemeMenu] : scheme[SchemeNumber]);
            drw_arrow(drw, mw - modeWidth, 0, plw, bh, 0, 0);

            x += plw;
        }
    }

     return x;
}

void
drawmenu(void)
{
	int x = 0, y = 0, w = 0;
    plw = hidepowerline ? 0 : drw->font->h / 2 + 1; // powerline size

    // draw menu first using menu scheme
	drw_setscheme(drw, scheme[SchemeMenu]);
	drw_rect(drw, 0, 0, mw, mh, 1, 1);

    int numberWidth = 0;
    int modeWidth = 0;

    // add width
    if (!hidemode) modeWidth = pango_mode ? TEXTWM(modetext) : TEXTW(modetext);

    // calculate match count
    if (!hidematchcount) {
        recalculatenumbers();
        numberWidth = TEXTW(numbers);

        // mode indicator is always going to be at the right
        if (hidemode) {
            numberWidth += 2 * sp + borderwidth;
        } else {
            modeWidth += 2 * sp + borderwidth;
        }
    }

    // why have an empty line?
    if (hideprompt && hideinput && hidemode && hidematchcount) {
        y -= bh;
        mh = (lines + 1) * bh - bh;

        if (!win) return;

        XResizeWindow(dpy, win, mw, mh);
        drw_resize(drw, mw, mh);
    }

    if (!hideprompt) x = drawprompt(x, y, w);
    if (!hideinput) x = drawinput(x, y, w);
    if (!hidemode) modeWidth = pango_mode ? TEXTWM(modetext) : TEXTW(modetext);

    drawitem(x, y, w);

    if (!hidematchcount) drawnumber(x, y, w, numberWidth, modeWidth);
    if (!hidemode) drawmode(x, y, w, numberWidth, modeWidth);

	drw_map(drw, win, 0, 0, mw, mh);
}