ltk

Socket-based GUI for X11 (WIP)
git clone git://lumidify.org/ltk.git (fast, but not encrypted)
git clone https://lumidify.org/git/ltk.git (encrypted, but very slow)
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graphics.c (2071B)

      1 /*
      2  * Copyright (c) 2021 lumidify <nobody@lumidify.org>
      3  *
      4  * Permission to use, copy, modify, and/or distribute this software for any
      5  * purpose with or without fee is hereby granted, provided that the above
      6  * copyright notice and this permission notice appear in all copies.
      7  *
      8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     15  */
     16 
     17 #include <X11/Xlib.h>
     18 #include <X11/Xutil.h>
     19 #include <stdint.h>
     20 
     21 #include "color.h"
     22 #include "rect.h"
     23 #include "widget.h"
     24 #include "ltk.h"
     25 
     26 void
     27 ltk_fill_widget_rect(ltk_widget *widget, ltk_color *color, ltk_rect rect) {
     28 	ltk_window *win = widget->window;
     29 	XSetForeground(win->dpy, win->gc, color->xcolor.pixel);
     30 	XFillRectangle(win->dpy, widget->pixmap, win->gc, rect.x, rect.y, rect.w, rect.h);
     31 }
     32 
     33 void
     34 ltk_draw_widget_rect(ltk_widget *widget, ltk_color *color, ltk_rect rect, int border_width) {
     35 	ltk_window *win = widget->window;
     36 	if (border_width <= 0)
     37 		return;
     38 	XSetForeground(win->dpy, win->gc, color->xcolor.pixel);
     39 	XSetLineAttributes(win->dpy, win->gc, border_width, LineSolid, CapButt, JoinMiter);
     40 	XDrawRectangle(
     41 	    win->dpy, widget->pixmap, win->gc,
     42 	    border_width / 2, border_width / 2,
     43 	    rect.w - border_width, rect.h - border_width
     44 	);
     45 }
     46 
     47 void
     48 ltk_copy_clipped(ltk_widget *widget, ltk_rect clip) {
     49 	ltk_window *win = widget->window;
     50 	ltk_rect clip_final = ltk_rect_intersect(clip, widget->rect);
     51 	if (clip_final.w <= 0 || clip_final.h <= 0)
     52 		return;
     53 	XCopyArea(
     54 	    win->dpy, widget->pixmap, win->drawable, win->gc,
     55 	    clip_final.x - widget->rect.x, clip_final.y - widget->rect.y,
     56 	    clip_final.w, clip_final.h, clip_final.x, clip_final.y
     57 	);
     58 }