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continued with draw.c and draw.h implementation, now the integration begins
[dwm.git] / draw.c
diff --git a/draw.c b/draw.c
index c4448db..fa340ff 100644 (file)
--- a/draw.c
+++ b/draw.c
@@ -1,211 +1,202 @@
-/* (C)opyright MMIV-MMVII Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-#include "dwm.h"
+/* See LICENSE file for copyright and license details. */
 #include <stdio.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <string.h>
-
-/* static */
-
-static Bool
-isoccupied(unsigned int t)
-{
-       Client *c;
-       for(c = clients; c; c = c->next)
-               if(c->tags[t])
-                       return True;
-       return False;
+#include <X11/Xlib.h>
+
+#include "draw.h"
+#include "util.h"
+
+Draw *
+draw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h) {
+       Draw *draw = (Draw *)calloc(1, sizeof(Draw));
+       draw->dpy = dpy;
+       draw->screen = screen;
+       draw->win = win;
+       draw->w = w;
+       draw->h = h;
+       draw->drawable = XCreatePixmap(dpy, win, w, h, DefaultDepth(dpy, screen));
+       draw->gc = XCreateGC(dpy, win, 0, NULL);
+       XSetLineAttributes(dpy, draw->gc, 1, LineSolid, CapButt, JoinMiter);
+       return draw;
 }
 
 }
 
-static unsigned int
-textnw(const char *text, unsigned int len) {
-       XRectangle r;
+void
+draw_resize(Draw *draw, unsigned int w, unsigned int h) {
+       if(!draw)
+               return;
+       draw->w = w;
+       draw->h = h;
+       XFreePixmap(draw->dpy, draw->drawable);
+       draw->drawable = XCreatePixmap(draw->dpy, draw->win, w, h, DefaultDepth(draw->dpy, draw->screen));
+}
 
 
-       if(dc.font.set) {
-               XmbTextExtents(dc.font.set, text, len, NULL, &r);
-               return r.width;
-       }
-       return XTextWidth(dc.font.xfont, text, len);
+void
+draw_free(Draw *draw) {
+       XFreePixmap(draw->dpy, draw->drawable);
+       XFreeGC(draw->dpy, draw->gc);
+       free(draw);
 }
 
 }
 
-static void
-drawtext(const char *text, unsigned long col[ColLast], Bool filledsquare, Bool emptysquare) {
-       int x, y, w, h;
-       static char buf[256];
-       unsigned int len, olen;
-       XGCValues gcv;
-       XRectangle r = { dc.x, dc.y, dc.w, dc.h };
-       XPoint pt[5];
-
-       XSetForeground(dpy, dc.gc, col[ColBG]);
-       XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
-       if(!text)
-               return;
-       w = 0;
-       olen = len = strlen(text);
-       if(len >= sizeof buf)
-               len = sizeof buf - 1;
-       memcpy(buf, text, len);
-       buf[len] = 0;
-       h = dc.font.ascent + dc.font.descent;
-       y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
-       x = dc.x + (h / 2);
-       /* shorten text if necessary */
-       while(len && (w = textnw(buf, len)) > dc.w - h)
-               buf[--len] = 0;
-       if(len < olen) {
-               if(len > 1)
-                       buf[len - 1] = '.';
-               if(len > 2)
-                       buf[len - 2] = '.';
-               if(len > 3)
-                       buf[len - 3] = '.';
+Fnt *
+draw_font_create(Draw *draw, const char *fontname) {
+       Fnt *font;
+       char *def, **missing;
+       int n;
+
+       if(!draw)
+               return NULL;
+       font = (Fnt *)calloc(1, sizeof(Fnt));
+       font->set = XCreateFontSet(draw->dpy, fontname, &missing, &n, &def);
+       if(missing) {
+               while(n--)
+                       fprintf(stderr, "draw: missing fontset: %s\n", missing[n]);
+               XFreeStringList(missing);
        }
        }
-       if(w > dc.w)
-               return; /* too long */
-       gcv.foreground = col[ColFG];
-       if(dc.font.set) {
-               XChangeGC(dpy, dc.gc, GCForeground, &gcv);
-               XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
+       if(font->set) {
+               XFontStruct **xfonts;
+               char **font_names;
+               XExtentsOfFontSet(font->set);
+               n = XFontsOfFontSet(font->set, &xfonts, &font_names);
+               while(n--) {
+                       font->ascent = MAX(font->ascent, (*xfonts)->ascent);
+                       font->descent = MAX(font->descent,(*xfonts)->descent);
+                       xfonts++;
+               }
        }
        else {
        }
        else {
-               gcv.font = dc.font.xfont->fid;
-               XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
-               XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
-       }
-       x = (h + 2) / 4;
-       if(filledsquare) {
-               r.x = dc.x + 1;
-               r.y = dc.y + 1;
-               r.width = r.height = x + 1;
-               XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
-       }
-       else if(emptysquare) {
-               pt[0].x = dc.x + 1;
-               pt[0].y = dc.y + 1;
-               pt[1].x = x;
-               pt[1].y = 0;
-               pt[2].x = 0;
-               pt[2].y = x;
-               pt[3].x = -x;
-               pt[3].y = 0;
-               pt[4].x = 0;
-               pt[4].y = -x;
-               XDrawLines(dpy, dc.drawable, dc.gc, pt, 5, CoordModePrevious);
+               if(!(font->xfont = XLoadQueryFont(draw->dpy, fontname))
+               && !(font->xfont = XLoadQueryFont(draw->dpy, "fixed")))
+                       die("error, cannot load font: '%s'\n", fontname);
+               font->ascent = font->xfont->ascent;
+               font->descent = font->xfont->descent;
        }
        }
+       font->h = font->ascent + font->descent;
+       return font;
 }
 
 }
 
-/* extern */
+void
+draw_font_free(Draw *draw, Fnt *font) {
+       if(!draw || !font)
+               return;
+       if(font->set)
+               XFreeFontSet(draw->dpy, font->set);
+       else
+               XFreeFont(draw->dpy, font->xfont);
+       free(font);
+}
+
+Col *
+draw_col_create(Draw *draw, const char *colname) {
+       Col *col = (Col *)calloc(1, sizeof(Col));
+       Colormap cmap = DefaultColormap(draw->dpy, draw->screen);
+       XColor color;
+
+       if(!XAllocNamedColor(draw->dpy, cmap, colname, &color, &color))
+               die("error, cannot allocate color '%s'\n", colname);
+       col->rgb = color.pixel;
+       return col;
+}
 
 void
 
 void
-drawall(void) {
-       Client *c;
+draw_col_free(Draw *draw, Col *col) {
+       if(!col)
+               return;
+       free(col);
+}
 
 
-       for(c = clients; c; c = getnext(c->next))
-               drawtitle(c);
-       drawstatus();
+void
+draw_setfont(Draw *draw, Fnt *font) {
+       if(!draw)
+               return;
+       draw->font = font;
 }
 
 void
 }
 
 void
-drawstatus(void) {
-       int i, x;
-
-       dc.x = dc.y = 0;
-       for(i = 0; i < ntags; i++) {
-               dc.w = textw(tags[i]);
-               if(seltag[i])
-                       drawtext(tags[i], dc.sel, sel && sel->tags[i], isoccupied(i));
-               else
-                       drawtext(tags[i], dc.norm, sel && sel->tags[i], isoccupied(i));
-               dc.x += dc.w;
-       }
-       dc.w = bmw;
-       drawtext(arrange == dofloat ?  FLOATSYMBOL : TILESYMBOL, dc.status, False, False);
-       x = dc.x + dc.w;
-       dc.w = textw(stext);
-       dc.x = bw - dc.w;
-       if(dc.x < x) {
-               dc.x = x;
-               dc.w = bw - x;
-       }
-       drawtext(stext, dc.status, False, False);
-       if((dc.w = dc.x - x) > bh) {
-               dc.x = x;
-               drawtext(sel ? sel->name : NULL, sel ? dc.sel : dc.norm, False, False);
-       }
-       XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
-       XSync(dpy, False);
+draw_setfg(Draw *draw, Col *col) {
+       if(!draw) 
+               return;
+       draw->fg = col;
 }
 
 void
 }
 
 void
-drawtitle(Client *c) {
-       if(c == sel && issel) {
-               drawstatus();
-               XUnmapWindow(dpy, c->twin);
-               XSetWindowBorder(dpy, c->win, dc.sel[ColBG]);
+draw_setbg(Draw *draw, Col *col) {
+       if(!draw)
                return;
                return;
-       }
-       XSetWindowBorder(dpy, c->win, dc.norm[ColBG]);
-       XMapWindow(dpy, c->twin);
-       dc.x = dc.y = 0;
-       dc.w = c->tw;
-       drawtext(c->name, dc.norm, False,False);
-       XCopyArea(dpy, dc.drawable, c->twin, dc.gc, 0, 0, c->tw, c->th, 0, 0);
-       XSync(dpy, False);
+       draw->bg = col;
 }
 
 }
 
-unsigned long
-getcolor(const char *colstr) {
-       Colormap cmap = DefaultColormap(dpy, screen);
-       XColor color;
+void
+draw_rect(Draw *draw, int x, int y, unsigned int w, unsigned int h, Bool filled, Bool empty, Bool invert) {
+       int dx;
 
 
-       if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
-               eprint("error, cannot allocate color '%s'\n", colstr);
-       return color.pixel;
+       if(!draw || !draw->font || !draw->fg || !draw->bg)
+               return;
+       XSetForeground(draw->dpy, draw->gc, invert ? draw->bg->rgb : draw->fg->rgb);
+       dx = (draw->font->ascent + draw->font->descent + 2) / 4;
+       if(filled)
+               XFillRectangle(draw->dpy, draw->drawable, draw->gc, x+1, y+1, dx+1, dx+1);
+       else if(empty)
+               XDrawRectangle(draw->dpy, draw->drawable, draw->gc, x+1, y+1, dx, dx);
 }
 
 void
 }
 
 void
-setfont(const char *fontstr) {
-       char *def, **missing;
-       int i, n;
+draw_text(Draw *draw, int x, int y, unsigned int w, unsigned int h, const char *text, Bool invert) {
+       char buf[256];
+       int i, tx, ty, len, olen;
+       TextExtents tex;
 
 
-       missing = NULL;
-       if(dc.font.set)
-               XFreeFontSet(dpy, dc.font.set);
-       dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
-       if(missing) {
-               while(n--)
-                       fprintf(stderr, "missing fontset: %s\n", missing[n]);
-               XFreeStringList(missing);
-       }
-       if(dc.font.set) {
-               XFontSetExtents *font_extents;
-               XFontStruct **xfonts;
-               char **font_names;
-               dc.font.ascent = dc.font.descent = 0;
-               font_extents = XExtentsOfFontSet(dc.font.set);
-               n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
-               for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
-                       if(dc.font.ascent < (*xfonts)->ascent)
-                               dc.font.ascent = (*xfonts)->ascent;
-                       if(dc.font.descent < (*xfonts)->descent)
-                               dc.font.descent = (*xfonts)->descent;
-                       xfonts++;
-               }
+       if(!draw || !draw->fg || !draw->bg)
+               return;
+       XSetForeground(draw->dpy, draw->gc, invert ? draw->fg->rgb : draw->bg->rgb);
+       XFillRectangle(draw->dpy, draw->drawable, draw->gc, x, y, w, h);
+       if(!text || !draw->font)
+               return;
+       olen = strlen(text);
+       draw_getextents(draw, text, olen, &tex);
+       ty = y + (h / 2) - tex.yOff;
+       tx = x + tex.xOff;
+       /* shorten text if necessary */
+       for(len = MIN(olen, sizeof buf); len && tex.w > w - tex.h; len--)
+               draw_getextents(draw, text, len, &tex);
+       if(!len)
+               return;
+       memcpy(buf, text, len);
+       if(len < olen)
+               for(i = len; i && i > len - 3; buf[--i] = '.');
+       XSetForeground(draw->dpy, draw->gc, invert ? draw->bg->rgb : draw->fg->rgb);
+       if(draw->font->set)
+               XmbDrawString(draw->dpy, draw->drawable, draw->font->set, draw->gc, tx, ty, buf, len);
+       else
+               XDrawString(draw->dpy, draw->drawable, draw->gc, tx, ty, buf, len);
+}
+
+void
+draw_map(Draw *draw, int x, int y, unsigned int w, unsigned int h) {
+       if(!draw)
+               return;
+       XCopyArea(draw->dpy, draw->drawable, draw->win, draw->gc, x, y, w, h, x, y);
+       XSync(draw->dpy, False);
+}
+
+
+void
+draw_getextents(Draw *draw, const char *text, unsigned int len, TextExtents *extents) {
+       XRectangle r;
+
+       if(!draw || !draw->font || !text)
+               return;
+       if(draw->font->set) {
+               XmbTextExtents(draw->font->set, text, len, NULL, &r);
+               extents->xOff = r.x;
+               extents->yOff = r.y;
+               extents->w = r.width;
+               extents->h = r.height;
        }
        else {
        }
        else {
-               if(dc.font.xfont)
-                       XFreeFont(dpy, dc.font.xfont);
-               dc.font.xfont = NULL;
-               if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
-                       eprint("error, cannot load font: '%s'\n", fontstr);
-               dc.font.ascent = dc.font.xfont->ascent;
-               dc.font.descent = dc.font.xfont->descent;
+               extents->h = draw->font->ascent + draw->font->descent;
+               extents->w = XTextWidth(draw->font->xfont, text, len);
+               extents->xOff = extents->h / 2;
+               extents->yOff = (extents->h / 2) + draw->font->ascent;
        }
        }
-       dc.font.height = dc.font.ascent + dc.font.descent;
-}
-
-unsigned int
-textw(const char *text) {
-       return textnw(text, strlen(text)) + dc.font.height;
 }
 }