316 lines
7.3 KiB
C
316 lines
7.3 KiB
C
/* See LICENSE file for copyright and license details. */
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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 <X11/Xlib.h>
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#include <cairo/cairo.h>
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#include <pango/pango.h>
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#include <pango/pangocairo.h>
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#include "drw.h"
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#include "util.h"
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void
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cairo_set_source_hex(cairo_t* cr, const char *col, int alpha)
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{
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unsigned int hex;
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sscanf(col, "#%x", &hex);
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double r = ((hex >> 16) & 0xFF) / 255.0;
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double g = ((hex >> 8) & 0xFF) / 255.0;
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double b = (hex & 0xFF) / 255.0;
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cairo_set_source_rgba(cr, r, g, b, alpha / 255.0);
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}
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Drw *
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drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h, Visual *visual, unsigned int depth, Colormap cmap)
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{
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Drw *drw = ecalloc(1, sizeof(Drw));
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drw->dpy = dpy;
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drw->screen = screen;
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drw->root = root;
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drw->w = w;
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drw->h = h;
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drw->visual = visual;
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drw->depth = depth;
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drw->cmap = cmap;
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drw->drawable = XCreatePixmap(dpy, root, w, h, depth);
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drw->gc = XCreateGC(dpy, drw->drawable, 0, NULL);
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XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
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return drw;
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}
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void
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drw_resize(Drw *drw, unsigned int w, unsigned int h)
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{
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if (!drw)
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return;
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drw->w = w;
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drw->h = h;
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if (drw->drawable)
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XFreePixmap(drw->dpy, drw->drawable);
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drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, drw->depth);
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}
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void
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drw_free(Drw *drw)
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{
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XFreePixmap(drw->dpy, drw->drawable);
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XFreeGC(drw->dpy, drw->gc);
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drw_font_free(drw->font);
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free(drw);
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}
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static Fnt *
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font_create(Drw *drw, const char *fontname) {
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Fnt *font;
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PangoFontMap *fontmap;
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PangoContext *context;
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PangoFontDescription *desc;
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PangoFontMetrics *metrics;
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if (!fontname) {
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die("dwm: no font specified.");
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}
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font = ecalloc(1, sizeof(Fnt));
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font->dpy = drw->dpy;
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fontmap = pango_cairo_font_map_new();
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context = pango_font_map_create_context(fontmap);
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desc = pango_font_description_from_string(fontname);
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font->layout = pango_layout_new(context);
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pango_layout_set_font_description(font->layout, desc);
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metrics = pango_context_get_metrics(context, desc, pango_language_from_string ("en-us"));
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font->h = pango_font_metrics_get_height(metrics) / PANGO_SCALE;
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pango_font_metrics_unref(metrics);
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g_object_unref(context);
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return font;
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}
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void
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font_free(Fnt *font)
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{
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if (!font)
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return;
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if (font->layout)
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g_object_unref(font->layout);
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free(font);
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}
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Fnt *
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drw_font_create(Drw* drw, char *font[], size_t fontcount)
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{
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if (!drw || !font)
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return NULL;
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Fnt *fnt = NULL;
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fnt = font_create(drw, *font);
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return (drw->font = fnt);
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}
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void
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drw_font_free(Fnt *font)
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{
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if (font) {
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font_free(font);
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}
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}
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void
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drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert, char *fgcol, char *bgcol, int fgalpha, int bgalpha)
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{
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if (!drw) {
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return;
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}
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cairo_surface_t *sf;
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sf = cairo_xlib_surface_create(drw->dpy, drw->drawable, drw->visual, drw->w, drw->h);
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cairo_t *cr = cairo_create(sf);
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if (!cr) {
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die("failed to create cairo context");
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}
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cairo_set_source_hex(cr, invert ? bgcol : fgcol, invert ? bgalpha : fgalpha);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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if (filled) {
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cairo_rectangle(cr, x, y, w, h);
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cairo_fill(cr);
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} else {
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cairo_rectangle(cr, x, y, w - 1, h - 1);
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cairo_stroke(cr);
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}
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cairo_destroy(cr);
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cairo_surface_destroy(sf);
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}
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int
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drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, const char *text, int invert, Bool markup, char *fgcol, char *bgcol, int fgalpha, int bgalpha)
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{
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char buf[1024];
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unsigned int ew = 0;
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size_t i, len;
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int render = x || y || w || h;
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char *t;
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if (!drw || !text || !drw->font) {
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return 0;
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}
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if (!render) {
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w = ~w;
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} else {
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x += lpad;
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w -= lpad;
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drw->surface = cairo_xlib_surface_create(drw->dpy, drw->drawable, drw->visual, drw->w, drw->h);
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drw->d = cairo_create(drw->surface);
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/* draw bg */
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cairo_set_source_hex(drw->d, invert ? fgcol : bgcol, invert ? fgalpha : bgalpha);
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cairo_set_operator(drw->d, CAIRO_OPERATOR_SOURCE);
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cairo_rectangle(drw->d, x - lpad, y, w + lpad, h);
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cairo_fill(drw->d);
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}
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t = strdup(text);
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len = strlen(t);
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if (len) {
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drw_font_getexts(drw->font, t, len, &ew, NULL, markup);
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/* shorten text if necessary */
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for (len = MIN(len, sizeof(buf) - 1); len && ew > w; drw_font_getexts(drw->font, t, len, &ew, NULL, markup))
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len--;
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if (len) {
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memcpy(buf, t, len);
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buf[len] = '\0';
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if (len < strlen(t))
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for (i = len; i && i > len - 3; buf[--i] = '.')
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; // NOP
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if (!strstr(buf, "</")) /* must contain </ */
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markup = 0;
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if (render) {
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if (markup) {
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pango_layout_set_markup(drw->font->layout, buf, len);
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} else {
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pango_layout_set_text(drw->font->layout, buf, len);
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}
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pango_layout_set_single_paragraph_mode(drw->font->layout, True);
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/* draw fg */
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cairo_set_source_hex(drw->d, fgcol, fgalpha);
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cairo_move_to(drw->d, x, y + (h - drw->font->h) / 2);
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/* update and show layout */
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pango_cairo_update_layout(drw->d, drw->font->layout);
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pango_cairo_show_layout(drw->d, drw->font->layout);
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cairo_set_operator(drw->d, CAIRO_OPERATOR_SOURCE);
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if (markup) /* clear markup attributes */
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pango_layout_set_attributes(drw->font->layout, NULL);
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}
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x += ew;
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w -= ew;
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}
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}
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return x + (render ? w : 0);
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}
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void
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drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h)
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{
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if (!drw)
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return;
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XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
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XSync(drw->dpy, False);
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}
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unsigned int
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drw_font_getwidth(Drw *drw, const char *text, Bool markup)
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{
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if (!drw || !drw->font || !text)
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return 0;
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return drw_text(drw, 0, 0, 0, 0, 0, text, 0, markup, "#000000", "#000000", 255, 255);
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}
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void
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drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h, Bool markup)
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{
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if (!font || !text)
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return;
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char *t = strdup(text);
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if (!strstr(t, "</"))
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markup = 0;
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PangoRectangle r;
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if (markup)
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pango_layout_set_markup(font->layout, t, len);
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else
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pango_layout_set_text(font->layout, t, len);
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pango_layout_get_extents(font->layout, 0, &r);
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if (markup) /* clear markup attributes */
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pango_layout_set_attributes(font->layout, NULL);
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if (w)
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*w = r.width / PANGO_SCALE;
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if (h)
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*h = font->h;
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}
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Cur *
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drw_cur_create(Drw *drw, int shape)
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{
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Cur *cur;
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if (!drw || !(cur = ecalloc(1, sizeof(Cur))))
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return NULL;
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cur->cursor = XCreateFontCursor(drw->dpy, shape);
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return cur;
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}
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void
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drw_cur_free(Drw *drw, Cur *cursor)
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{
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if (!cursor)
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return;
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XFreeCursor(drw->dpy, cursor->cursor);
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free(cursor);
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}
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