Widget-ise the statusbar.

We now have the beginnings of a flexible widget structure for the statusbar.
For now, there is no behavioural change, and the interface is a bit crude, but
watch this space!

Makefile

@@ -3,8 +3,8 @@
 
 include config.mk
 
-SRC = focus.c client.c draw.c event.c layout.c awesome.c tag.c util.c xutil.c config.c screen.c statusbar.c uicb.c window.c rules.c mouse.c awesome-client-common.c
-OBJ = ${SRC:.c=.o} ${LAYOUTS:.c=.o}
+SRC = focus.c client.c draw.c event.c layout.c awesome.c tag.c util.c xutil.c config.c screen.c statusbar.c uicb.c window.c rules.c mouse.c awesome-client-common.c widget.c
+OBJ = ${SRC:.c=.o} ${LAYOUTS:.c=.o} ${WIDGETS:.c=.o}
 DOCS = awesome.1.txt awesome-client.1.txt awesomerc.1.txt
 
 SRCCLIENT = awesome-client.c awesome-client-common.c util.c
@@ -15,6 +15,7 @@ all: options awesome awesome-client
 options:
 	@echo awesome build options:
 	@echo "LAYOUTS  = ${LAYOUTS}"
+	@echo "WIDGETS  = ${WIDGETS}"
 	@echo "CFLAGS   = ${CFLAGS}"
 	@echo "LDFLAGS  = ${LDFLAGS}"
 	@echo "CC       = ${CC}"
@@ -59,10 +60,12 @@ dist: clean
 	@echo creating dist tarball
 	@mkdir awesome-${VERSION}
 	@mkdir awesome-${VERSION}/layouts
+	@mkdir awesome-${VERSION}/widgets
 	@cp -fR STYLE LICENSE AUTHORS Makefile README awesomerc config.mk \
 	    awesome-client.1.txt awesome.1.txt awesomerc.1.txt ${SRCCLIENT} ${SRCCLIENT:.c=.h} ${SRC} ${SRC:.c=.h} \
 	    common.h awesome-${VERSION} || true
 	@cp -R ${LAYOUTS} ${LAYOUTS:.c=.h} awesome-${VERSION}/layouts
+	@cp -R ${WIDGETS} ${WIDGETS:.c=.h} awesome-${VERSION}/layouts
 	@tar -cf awesome-${VERSION}.tar awesome-${VERSION}
 	@gzip -9 awesome-${VERSION}.tar
 	@rm -rf awesome-${VERSION}

config.h

@@ -25,6 +25,7 @@
 #include <X11/Xlib.h>
 #include <X11/Xft/Xft.h>
 #include <regex.h>
+#include <draw.h>
 
 /** Bar possible position */
 enum
@@ -79,6 +80,7 @@ struct Button
 };
 
 /** Status bar */
+typedef struct Widget Widget;
 typedef struct
 {
     /** Bar width */
@@ -95,6 +97,8 @@ typedef struct
     Window window;
     /** Screen */
     int screen;
+    /** Screen */
+    Widget *widgets;
 } Statusbar;
 
 typedef struct Client Client; 
@@ -216,6 +220,19 @@ typedef struct
     XftFont *font;
 } VirtScreen;
 
+
+struct Widget
+{
+    char *name;
+    int (*draw)(DrawCtx *,
+                awesome_config *,
+                VirtScreen, int, int, int, int);
+    Statusbar *statusbar;
+    int alignment;
+    Widget *next;
+};
+
+
 /** Main configuration structure */
 struct awesome_config
 {

config.mk

@@ -7,6 +7,8 @@ RELEASE = "Productivity Breaker"
 # additional layouts
 LAYOUTS = layouts/tile.c layouts/floating.c layouts/max.c layouts/fibonacci.c
 
+WIDGETS = widgets/taglist.c widgets/layoutinfo.c widgets/textbox.c widgets/focustitle.c
+
 # paths
 PREFIX = /usr/local
 MANPREFIX = ${PREFIX}/share/man

statusbar.c

@@ -28,158 +28,17 @@
 #include "screen.h"
 #include "util.h"
 #include "tag.h"
+#include "widget.h"
 #include "layouts/tile.h"
-
-enum { AlignLeft, AlignRight, AlignFlex };
-
-/** Check if at least a client is tagged with tag number t and is on screen
- * screen
- * \param t tag number
- * \param screen screen number
- * \return True or False
- */
-static Bool
-isoccupied(TagClientLink *tc, int screen, Client *head, Tag *t)
-{
-    Client *c;
-
-    for(c = head; c; c = c->next)
-        if(c->screen == screen && is_client_tagged(tc, c, t))
-            return True;
-    return False;
-}
-
-
-static int
-calculate_offset(int barwidth, int widgetwidth, int offset, int alignment)
-{
-    if (alignment == AlignLeft || alignment == AlignFlex)
-        return offset;
-    else
-        return barwidth - offset - widgetwidth;
-}
-
-
-static int
-tagwidget_draw(DrawCtx *ctx,
-               awesome_config *awesomeconf,
-               VirtScreen vscreen,
-               int screen,
-               int offset,
-               int used __attribute__ ((unused)),
-               int align __attribute__ ((unused)))
-{
-    Tag *tag;
-    Client *sel = awesomeconf->focus->client;
-    int w = 0, width = 0, location;
-    int flagsize;
-    XColor *colors;
-
-    flagsize = (vscreen.font->height + 2) / 4;
-
-    for(tag = vscreen.tags; tag; tag = tag->next)
-        width  += textwidth(ctx, vscreen.font, tag->name);
-
-    location = calculate_offset(vscreen.statusbar.width, width, offset, align);
-
-    width = 0;
-    for(tag = vscreen.tags; tag; tag = tag->next)
-    {
-        w = textwidth(ctx, vscreen.font, tag->name);
-        if(tag->selected)
-            colors = vscreen.colors_selected;
-        else
-            colors = vscreen.colors_normal;
-        drawtext(ctx, location + width, 0, w,
-                 vscreen.statusbar.height, vscreen.font, tag->name, colors);
-        if(isoccupied(vscreen.tclink, screen, awesomeconf->clients, tag))
-            drawrectangle(ctx, location + width, 0, flagsize, flagsize,
-                          sel && is_client_tagged(vscreen.tclink, sel, tag),
-                          colors[ColFG]);
-        width += w;
-    }
-    return width;
-}
-
-
-static int
-layoutsymbol_draw(DrawCtx *ctx,
-                  awesome_config *awesomeconf __attribute__ ((unused)),
-                  VirtScreen vscreen,
-                  int screen __attribute__ ((unused)),
-                  int offset, 
-                  int used __attribute__ ((unused)),
-                  int align __attribute__ ((unused)))
-{
-    int width = 0, location; 
-    Layout *l;
-    for(l = vscreen.layouts ; l; l = l->next)
-        width = MAX(width, (textwidth(ctx, vscreen.font, l->symbol)));
-    location = calculate_offset(vscreen.statusbar.width, width, offset, align);
-    drawtext(ctx, location, 0,
-             width,
-             vscreen.statusbar.height,
-             vscreen.font,
-             get_current_layout(vscreen)->symbol,
-             vscreen.colors_normal);
-    return width;
-}
-
-
-static int
-statustext_draw(DrawCtx *ctx,
-                awesome_config *awesomeconf __attribute__ ((unused)),
-                VirtScreen vscreen,
-                int screen __attribute__ ((unused)),
-                int offset, 
-                int used __attribute__ ((unused)),
-                int align)
-{
-    int width = textwidth(ctx, vscreen.font, vscreen.statustext);
-    int location = calculate_offset(vscreen.statusbar.width, width, offset, align);
-    drawtext(ctx, location, 0, width, vscreen.statusbar.height,
-             vscreen.font, vscreen.statustext, vscreen.colors_normal);
-    return width;
-}
-
-
-static int
-focustitle_draw(DrawCtx *ctx,
-                awesome_config *awesomeconf __attribute__ ((unused)),
-                VirtScreen vscreen,
-                int screen __attribute__ ((unused)),
-                int offset, 
-                int used,
-                int align)
-{
-    Client *sel = awesomeconf->focus->client;
-    int location = calculate_offset(vscreen.statusbar.width, 0, offset, align);
-
-    if(sel)
-    {
-        drawtext(ctx, location, 0, vscreen.statusbar.width - used,
-                 vscreen.statusbar.height, vscreen.font, sel->name,
-                 vscreen.colors_selected);
-        if(sel->isfloating)
-            drawcircle(ctx, location, 0,
-                       (vscreen.font->height + 2) / 4,
-                       sel->ismax,
-                       vscreen.colors_selected[ColFG]);
-    }
-    else
-        drawtext(ctx, location, 0, vscreen.statusbar.width - used,
-                 vscreen.statusbar.height, vscreen.font, NULL,
-                 vscreen.colors_normal);
-    return vscreen.statusbar.width - used;
-}
-
+#include "widget.h"
 
 void
 statusbar_draw(awesome_config *awesomeconf, int screen)
 {
-    int x = 0, split;
     int phys_screen = get_phys_screen(awesomeconf->display, screen);
     VirtScreen vscreen;
+    Widget *widget;
+    int left = 0, right = 0;
 
     vscreen = awesomeconf->screens[screen];
     /* don't waste our time */
@@ -188,11 +47,16 @@ statusbar_draw(awesome_config *awesomeconf, int screen)
 
     DrawCtx *ctx = draw_get_context(awesomeconf->display, phys_screen,
                                     vscreen.statusbar.width, vscreen.statusbar.height);
-    x += tagwidget_draw(ctx, awesomeconf, vscreen, screen, x, x, AlignLeft);
-    x += layoutsymbol_draw(ctx, awesomeconf, vscreen, screen, x, x, AlignLeft);
-    split = x;
-    x += statustext_draw(ctx, awesomeconf, vscreen, screen, 0, x, AlignRight);
-    focustitle_draw(ctx, awesomeconf, vscreen, screen, split, x, AlignFlex);
+
+    for(widget = vscreen.statusbar.widgets; widget; widget = widget->next)
+        if (widget->alignment == AlignLeft)
+            left += widget->draw(ctx, awesomeconf, vscreen, screen, left, (left + right), AlignLeft);
+        else if (widget->alignment == AlignRight)
+            right += widget->draw(ctx, awesomeconf, vscreen, screen, right, (left + right), AlignRight);
+
+    for(widget = vscreen.statusbar.widgets; widget; widget = widget->next)
+        if (widget->alignment == AlignFlex)
+            left += widget->draw(ctx, awesomeconf, vscreen, screen, left, (left + right), AlignFlex);
 
     if(vscreen.statusbar.position == BarRight || vscreen.statusbar.position == BarLeft)
     {
@@ -224,6 +88,7 @@ statusbar_init(Display *disp, int screen, Statusbar *statusbar, Cursor cursor, X
     XSetWindowAttributes wa;
     int phys_screen = get_phys_screen(disp, screen);
     ScreenInfo *si = get_screen_info(disp, screen, NULL, padding);
+    Widget *widget;
 
     statusbar->height = font->height * 1.5;
 
@@ -257,6 +122,15 @@ statusbar_init(Display *disp, int screen, Statusbar *statusbar, Cursor cursor, X
                                           DefaultVisual(disp, phys_screen),
                                           CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
     XDefineCursor(disp, statusbar->window, cursor);
+
+    /* For now, we just create a standard set of widgets by hand. As the refactoring continues,
+     * these will become configurable. */
+    statusbar->widgets = widget = taglist_new(statusbar);
+    widget->next = layoutinfo_new(statusbar); widget = widget->next;
+    widget->next = focustitle_new(statusbar); widget = widget->next;
+    widget->next = textbox_new(statusbar);
+    calculate_alignments(statusbar->widgets);
+
     statusbar_update_position(disp, *statusbar, padding);
     XMapRaised(disp, statusbar->window);
 }
@@ -336,4 +210,5 @@ uicb_statusbar_set_text(awesome_config *awesomeconf, int screen, const char *arg
 
     statusbar_draw(awesomeconf, screen);
 }
+
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99

widget.c

@@ -0,0 +1,34 @@
+
+#include "widget.h"
+
+
+void
+calculate_alignments(Widget *widget)
+{
+    while (widget){
+        printf("%s\n", widget->name);
+        if (widget->alignment == AlignFlex){
+            widget = widget->next;
+            break;
+        }
+        widget->alignment = AlignLeft;
+        widget = widget->next;
+    }
+    if (widget){
+        while (widget){ 
+            widget->alignment = AlignRight;
+            widget = widget->next;
+        }
+    }
+}
+
+int
+calculate_offset(int barwidth, int widgetwidth, int offset, int alignment)
+{
+    if (alignment == AlignLeft || alignment == AlignFlex)
+        return offset;
+    else
+        return barwidth - offset - widgetwidth;
+}
+
+// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99

widget.h

@@ -0,0 +1,19 @@
+#ifndef AWESOME_WIDGET_H
+#define AWESOME_WIDGET_H
+
+#include "config.h"
+#include "draw.h"
+
+enum { AlignLeft, AlignRight, AlignFlex };
+
+int calculate_offset(int, int, int, int);
+void calculate_alignments(Widget *widget);
+
+Widget *layoutinfo_new(Statusbar*);
+Widget *taglist_new(Statusbar*);
+Widget *textbox_new(Statusbar*);
+Widget *focustitle_new(Statusbar*);
+
+#endif
+
+// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99