draw.c

#include "extern.h"

#include <string.h>

static void draw_border(Window, int, int, bool, struct layout *);

/*
 * Draws button in a pane (p) to layout (l).
 */
static void
draw_button(struct pane *p, Window w, char ch, bool reverse, struct layout *l)
{
	if (XftDrawDrawable(p->ftdraw) != w)
		XftDrawChange(p->ftdraw, w);

	font_draw(p->ftdraw, l->display, w, l->text_fg, l->text_inactive_bg,
	    1 + ((l->font_height_px - l->font_width_px) / 2),
	    1 + ((l->font_height_px - l->font_width_px) / 2), 1, &ch, 1);

	draw_border(w, l->titlebar_height_px, l->titlebar_height_px, reverse, l);
}

void
draw_close_button(struct pane *p, struct layout *l)
{
	draw_button(p, p->close_button, 'X', false, l);
}

void
draw_maximize_button(struct pane *p, struct layout *l)
{
	bool reverse;

	reverse = false;
	if (p->flags & PF_KEEP_OPEN)
		reverse = true;

	draw_button(p, p->maximize_button, '^', reverse, l);
}

void
draw_outline(struct pane *p, int x, int y, struct layout *l)
{
	XSegment s[7] = {
	/* 1. left vertical line */
		{ x, y,
		  x, y + p->height },
	/* 2. right vertical line */
		{ x + l->column->width, y,
		  x + l->column->width, y + p->height },
	/* 3. top horizontal line */
		{ x + 1, y,
		  x + l->column->width - 1, y },
	/* 4. horizontal titlebar separator */
		{ x + 1, y + l->titlebar_height_px,
		  x + l->column->width - 1, y + l->titlebar_height_px },
	/* 5. bottom horizontal line */
		{ x + 1, y + p->height,
		  x + l->column->width - 1, y + p->height },
	/* 6. topleft -> bottomright diagonal */
		{ x + 1, y + 21,
		  x + l->column->width - 1, y + p->height - 1 },
	/* 7. bottomleft -> topright diagonal */
		{ x + 1, y + p->height - 1,
		  x + l->column->width - 1, y + l->titlebar_height_px }
	};

	/*
	 * We use segments here because we want to have a bit more
	 * than a plain rectangle outline. We're assuming using one
	 * larger drawing operation instead of several smaller
	 * drawing operations is better. In any case there will
	 * be less overlapping draws.
	 */
	XDrawSegments(l->display, DefaultRootWindow(l->display),
	              l->outline_gc, s, sizeof(s) / sizeof(s[0]));
}

static void
draw_border(Window w, int width, int height, bool reverse, struct layout *l)
{
	XSegment bright[] = {
	/* 1. left vertical line */
		{ 0, 0,
		  0, height -1 },
	/* 3. top horizontal line */
		{ 0 + 1, 0,
		  0 + width - 1, 0 }
	};

	XSegment shadow[] = {
	/* 2. right vertical line */
		{ 0 + width - 1, 0,
		  0 + width - 1, height },
	/* 4. bottom horizontal line */
		{ 0, height - 1,
		  0 + width - 1, height - 1 }
	};

	XDrawSegments(l->display, w,
	              reverse ? l->shadow_gc : l->bright_gc,
	              bright, sizeof(bright) / sizeof(bright[0]));
	XDrawSegments(l->display, w,
	              reverse ? l->bright_gc : l->shadow_gc,
	              shadow, sizeof(shadow) / sizeof(shadow[0]));
}

/*
 * Draws frame in a pane (p) to layout (l).
 */
void
draw_frame(struct pane *p, struct layout *l)
{
	char number_str[20];
	int x, y, prompt_x;
	XftColor bg;

	TRACE("try draw frame of %s", PANE_STR(p));

	if (XftDrawDrawable(p->ftdraw) != p->frame)
		XftDrawChange(p->ftdraw, p->frame);

	XClearWindow(l->display, p->frame);

	snprintf(number_str, sizeof(number_str), "%ld%c%c%c%c%c%c: ", p->number,
	    p->flags & PF_MINIMIZED ? 'M' : 'm',
	    p->flags & PF_HIDDEN ? 'H' : 'h',
	    p->flags & PF_HIDE_OTHERS_LEADER ? 'L' : 'l',
	    p->flags & PF_KEEP_OPEN ? 'O' : 'o',
	    p->flags & PF_EDIT ? 'E' : 'e',
	    p->flags & PF_EMPTY ? 'Y' : 'y');

	y = 1;
	x = l->font_width_px / 2;

	if (p->flags & PF_FOCUSED)
		bg = l->text_active_bg;
	else
		bg = l->text_inactive_bg;

	x += font_draw(p->ftdraw, l->display, p->frame, l->text_fg, bg,
	    x, x, y, number_str, strlen(number_str));
	prompt_x = x;

	if (p->flags & PF_EDIT) {
		x += font_draw(p->ftdraw, l->display, p->frame, l->text_fg, bg,
		    x, x, y, p->prompt.text, strlen(p->prompt.text));
	} else if (p->name != NULL && (p->flags & PF_MINIMIZED) == 0) {
		x += font_draw(p->ftdraw, l->display, p->frame, l->text_fg, bg,
		    x, x, y, p->name, strlen(p->name));
	} else if (p->icon_name != NULL && (p->flags & PF_MINIMIZED)) {
		x += font_draw(p->ftdraw, l->display, p->frame, l->text_fg, bg,
		    x, x, y, p->icon_name, strlen(p->icon_name));
	}

	/*
	 * Draw cursor.
	 */
	if (p->flags & PF_EDIT) {
		prompt_x += ((p->prompt.cursor - p->prompt.text) * l->font_width_px);
		x += font_draw(p->ftdraw, l->display, p->frame, l->text_fg,
		    l->text_cursor, prompt_x, prompt_x, y,
		    *p->prompt.cursor != '\0' ? p->prompt.cursor : " ", 1);
	}

	if (p->flags & PF_FULLSCREEN)
		draw_border(p->frame, region_width(l->display, l->column->x), l->titlebar_height_px, false, l);
	else 
		draw_border(p->frame, l->column->width, l->titlebar_height_px, false, l);
}