...

src/api.c

@@ -0,0 +1,54 @@
+/* Metacity misc. public entry points */
+
+/* 
+ * Copyright (C) 2001 Havoc Pennington
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include "api.h"
+#include "display.h"
+#include "colors.h"
+
+PangoContext*
+meta_get_pango_context (Screen                     *xscreen,
+                        const PangoFontDescription *desc,
+                        Window                      frame)
+{
+  MetaScreen *screen;
+
+  screen = meta_screen_for_x_screen (xscreen);
+
+  g_return_val_if_fail (screen != NULL, NULL);
+
+  return meta_screen_get_pango_context (screen,
+                                        desc,
+                                        /* FIXME, from the frame window */
+                                        PANGO_DIRECTION_LTR);
+}
+
+gulong
+meta_get_x_pixel (Screen *xscreen, const PangoColor *color)
+{
+  MetaScreen *screen;
+
+  screen = meta_screen_for_x_screen (xscreen);
+
+  g_return_val_if_fail (screen != NULL, 0);
+  
+  return meta_screen_get_x_pixel (screen, color);
+}
+

src/api.h

@@ -0,0 +1,37 @@
+/* Metacity misc. public entry points */
+
+/* 
+ * Copyright (C) 2001 Havoc Pennington
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef META_API_H
+#define META_API_H
+
+/* don't add any internal headers here; api.h is an installed/public
+ * header. Only theme.h is also installed.
+ */
+#include <Xlib.h>
+#include <pango/pangox.h>
+
+PangoContext* meta_get_pango_context (Screen                     *xscreen,
+                                      const PangoFontDescription *desc,
+                                      Window                      frame);
+gulong        meta_get_x_pixel       (Screen                     *xscreen,
+                                      const PangoColor           *color);
+
+#endif

src/colors.c

@@ -0,0 +1,42 @@
+/* Metacity RGB color stuff */
+
+/* 
+ * Copyright (C) 2001 Havoc Pennington
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include "colors.h"
+
+gulong
+meta_screen_get_x_pixel (MetaScreen       *screen,
+                         const PangoColor *color)
+{
+#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
+  double r, g, b;
+
+  r = color->red / (double) 0xffff;
+  g = color->green / (double) 0xffff;
+  b = color->blue / (double) 0xffff;    
+
+  /* Now this is a low-bloat GdkRGB replacement! */
+  if (INTENSITY (r, g, b) > 0.5)
+    return WhitePixel (screen->display->xdisplay, screen->number);
+  else
+    return BlackPixel (screen->display->xdisplay, screen->number);
+  
+#undef INTENSITY
+}

src/colors.h

@@ -0,0 +1,35 @@
+/* Metacity RGB color stuff */
+
+/* 
+ * Copyright (C) 2001 Havoc Pennington
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef META_COLORS_H
+#define META_COLORS_H
+
+/* This stuff will all just be XlibRGB eventually. Right now
+ * it has a stub implementation.
+ */
+
+#include "screen.h"
+#include "util.h"
+
+gulong meta_screen_get_x_pixel (MetaScreen       *screen,
+                                const PangoColor *color);
+
+#endif

src/display.c

@@ -190,6 +190,26 @@ meta_display_screen_for_root (MetaDisplay *display,
   return NULL;
 }
 
+MetaScreen*
+meta_display_screen_for_x_screen (MetaDisplay *display,
+                                  Screen      *xscreen)
+{
+  GSList *tmp;
+
+  tmp = display->screens;
+  while (tmp != NULL)
+    {
+      MetaScreen *screen = tmp->data;
+
+      if (xscreen == screen->xscreen)
+        return screen;
+
+      tmp = tmp->next;
+    }
+
+  return NULL;
+}
+
 /* Grab/ungrab routines taken from fvwm */
 void
 meta_display_grab (MetaDisplay *display)

src/display.h

@@ -24,6 +24,7 @@
 
 #include <glib.h>
 #include <Xlib.h>
+#include <pango/pangox.h>
 #include "eventqueue.h"
 
 typedef struct _MetaDisplay MetaDisplay;
@@ -36,6 +37,7 @@ struct _MetaDisplay
   char *name;
   Display *xdisplay;
 
+  /*< private-ish >*/
   MetaEventQueue *events;
   GSList *screens;
   GHashTable *window_ids;
@@ -47,8 +49,12 @@ gboolean    meta_display_open            (const char  *name);
 void          meta_display_close               (MetaDisplay *display);
 MetaScreen*   meta_display_screen_for_root     (MetaDisplay *display,
                                                 Window       xroot);
+MetaScreen*   meta_display_screen_for_x_screen (MetaDisplay *display,
+                                                Screen      *screen);
 void          meta_display_grab                (MetaDisplay *display);
 void          meta_display_ungrab              (MetaDisplay *display);
+PangoContext* meta_display_get_pango_context   (MetaDisplay *display);
+
 
 /* A given MetaWindow may have various X windows that "belong"
  * to it, such as the frame window.

src/frame.c

@@ -22,6 +22,21 @@
 #include "frame.h"
 #include "errors.h"
 
+static void
+meta_frame_init_info (MetaFrame     *frame,
+                      MetaFrameInfo *info)
+{
+  info->flags = 0;
+  info->frame = frame->xwindow;
+  info->display = frame->window->display->xdisplay;
+  info->screen = frame->window->screen->xscreen;
+  info->visual = frame->window->xvisual;
+  info->depth = frame->window->depth;
+  info->title = frame->window->title;
+  info->width = frame->rect.width;
+  info->height = frame->rect.height;
+}
+
 void
 meta_window_ensure_frame (MetaWindow *window)
 {
@@ -29,6 +44,8 @@ meta_window_ensure_frame (MetaWindow *window)
   int child_x, child_y;
   unsigned long background_pixel;
   XSetWindowAttributes attrs;
+  MetaFrameInfo info;
+  MetaFrameGeometry geom;
   
   if (window->frame)
     return;
@@ -37,14 +54,33 @@ meta_window_ensure_frame (MetaWindow *window)
 
   frame->window = window;
 
-  /* FIXME de-hardcode */
+  /* Fill these in for the theme engine's benefit */
-  child_x = 5;
+  frame->xwindow = None;
-  child_y = 5;
+  frame->rect.width = window->rect.width;
+  frame->rect.height = window->rect.height;
   
-  frame->rect.width = window->rect.width + 10;
+  meta_frame_init_info (frame, &info);
-  frame->rect.height = window->rect.height + 10;
 
-  background_pixel = BlackPixel (window->display, window->screen->number);
+  geom.left_width = 0;
+  geom.right_width = 0;
+  geom.top_height = 0;
+  geom.bottom_height = 0;
+  geom.background_pixel = BlackPixel (frame->window->display->xdisplay,
+                                      frame->window->screen->number);
+
+  geom.shape_mask = None;
+  
+  frame->theme_data = window->screen->engine->acquire_frame (&info);
+  window->screen->engine->fill_frame_geometry (&info, &geom,
+                                               frame->theme_data);
+
+  child_x = geom.left_width;
+  child_y = geom.top_height;
+
+  frame->rect.width = window->rect.width + geom.left_width + geom.right_width;
+  frame->rect.height = window->rect.height + geom.top_height + geom.bottom_height;
+
+  background_pixel = geom.background_pixel;
   
   switch (window->win_gravity)
     {
@@ -151,12 +187,19 @@ void
 meta_window_destroy_frame (MetaWindow *window)
 {
   MetaFrame *frame;
+  MetaFrameInfo info;
   
   if (window->frame == NULL)
     return;
 
   frame = window->frame;
 
+  if (frame->theme_data)
+    {
+      meta_frame_init_info (frame, &info);
+      window->screen->engine->release_frame (&info, frame->theme_data);
+    }
+  
   /* Unparent the client window; it may be destroyed,
    * thus the error trap.
    */
@@ -220,6 +263,16 @@ meta_frame_event (MetaFrame *frame,
     case KeymapNotify:
       break;
     case Expose:
+      {
+        MetaFrameInfo info;
+        meta_frame_init_info (frame, &info);
+        frame->window->screen->engine->expose_frame (&info,
+                                                     event->xexpose.x,
+                                                     event->xexpose.y,
+                                                     event->xexpose.width,
+                                                     event->xexpose.height,
+                                                     frame->theme_data);
+      }
       break;
     case GraphicsExpose:
       break;

src/frame.h

@@ -33,6 +33,8 @@ struct _MetaFrame
   Window xwindow;
 
   MetaRectangle rect;
+
+  gpointer theme_data;
 };
 
 void meta_window_ensure_frame  (MetaWindow *window);

src/main.c

@@ -38,6 +38,8 @@ main (int argc, char **argv)
   meta_set_debugging (TRUE);
   meta_set_syncing (g_getenv ("METACITY_SYNC") != NULL);
 
+  g_type_init (0); /* grumble */
+  
   meta_errors_init ();
   
   if (!meta_display_open (NULL))

src/run-metacity.sh

@@ -1,6 +1,6 @@
 #! /bin/bash
 
-Xnest :1 -scrns 2 -geometry 200x200 &
+Xnest :1 -scrns 2 -geometry 270x270 &
 sleep 1
 DISPLAY=:1 unst $1 ./metacity
 killall Xnest

src/screen.c

@@ -23,7 +23,11 @@
 #include "util.h"
 #include "errors.h"
 #include "window.h"
+#include "colors.h"
+
 #include <cursorfont.h>
+#include <locale.h>
+#include <string.h>
 
 MetaScreen*
 meta_screen_new (MetaDisplay *display,
@@ -81,6 +85,9 @@ meta_screen_new (MetaDisplay *display,
   screen->number = number;
   screen->xscreen = ScreenOfDisplay (xdisplay, number);
   screen->xroot = xroot;  
+  screen->pango_context = NULL;
+
+  screen->engine = &meta_default_engine;
   
   meta_verbose ("Added screen %d on display '%s' root 0x%lx\n",
                 screen->number, screen->display->name, screen->xroot);  
@@ -91,6 +98,8 @@ meta_screen_new (MetaDisplay *display,
 void
 meta_screen_free (MetaScreen *screen)
 {
+  if (screen->pango_context)
+    g_object_unref (G_OBJECT (screen->pango_context));
   g_free (screen);
 }
 
@@ -130,3 +139,120 @@ meta_screen_manage_all_windows (MetaScreen *screen)
   if (children)
     XFree (children);
 }
+
+static GC
+get_gc_func (PangoContext *context, PangoColor *color, GC base_gc)
+{
+  MetaScreen *screen;
+  GC new_gc;
+  XGCValues vals;
+  int copy_mask = (GCFunction | GCPlaneMask | GCForeground | GCBackground |
+                   GCLineWidth | GCLineStyle | GCCapStyle | GCJoinStyle |
+                   GCFillStyle | GCFillRule | GCTile | GCStipple | GCTileStipXOrigin |
+                   GCTileStipYOrigin | GCFont | GCSubwindowMode |
+                   GCGraphicsExposures | GCClipXOrigin | GCClipYOrigin |
+                   GCDashOffset | GCArcMode);
+
+  screen = g_object_get_data (G_OBJECT (context), "meta-screen");
+  
+  new_gc = XCreateGC (screen->display->xdisplay,
+                      screen->xroot,
+                      0, 
+                      &vals);
+
+  XCopyGC (screen->display->xdisplay, base_gc, copy_mask, new_gc);
+
+  vals.foreground = meta_screen_get_x_pixel (screen, color);
+  XChangeGC (screen->display->xdisplay, new_gc, GCForeground, &vals);
+
+  return new_gc;
+}
+
+static void
+free_gc_func (PangoContext *context, GC gc)
+{
+  MetaScreen *screen;
+
+  screen = g_object_get_data (G_OBJECT (context), "meta-screen");
+
+  XFreeGC (screen->display->xdisplay, gc);
+}
+
+static char*
+get_default_language (void)
+{
+  /* Copied from GTK, Copyright 2001 Red Hat Inc. */
+  gchar *lang;
+  gchar *p;
+  
+  lang = g_strdup (setlocale (LC_CTYPE, NULL));
+  p = strchr (lang, '.');
+  if (p)
+    *p = '\0';
+  p = strchr (lang, '@');
+  if (p)
+    *p = '\0';
+
+  return lang;
+}
+
+PangoContext*
+meta_screen_get_pango_context (MetaScreen *screen,
+                               const PangoFontDescription *desc,
+                               PangoDirection direction)
+{
+  if (screen->pango_context == NULL)
+    {
+      PangoContext *ctx;
+      char *lang;
+      
+      /* Copied from GDK, Copyright 2001 Red Hat, Inc. */
+#ifdef HAVE_XFT
+      static int use_xft = -1;
+      if (use_xft == -1)
+        {
+          char *val = g_getenv ("META_USE_XFT");
+          
+          use_xft = val && (atoi (val) != 0);
+        }
+      
+      if (use_xft)
+        ctx = pango_xft_get_context (screen->display, screen->number);
+      else
+#endif /* HAVE_XFT */
+        ctx = pango_x_get_context (screen->display->xdisplay);
+
+      g_object_set_data (G_OBJECT (ctx), "meta-screen", screen);
+
+      pango_x_context_set_funcs (ctx, get_gc_func, free_gc_func);
+      
+      lang = get_default_language ();  
+      pango_context_set_lang (ctx, lang);
+      g_free (lang);
+
+      /* FIXME these two lines are wrong;
+       * we should be storing a context for each direction/desc,
+       * so that the args to meta_screen_get_pango_context()
+       * are honored.
+       */
+      pango_context_set_base_dir (ctx, direction);
+      pango_context_set_font_description (ctx, desc);
+      
+      screen->pango_context = ctx;
+    }
+  
+  return screen->pango_context;
+}
+
+MetaScreen*
+meta_screen_for_x_screen (Screen *xscreen)
+{
+  MetaDisplay *display;
+  
+  display = meta_display_for_x_display (DisplayOfScreen (xscreen));
+
+  if (display == NULL)
+    return NULL;
+  
+  return meta_display_screen_for_x_screen (display, xscreen);
+}

src/screen.h

@@ -23,6 +23,7 @@
 #define META_SCREEN_H
 
 #include "display.h"
+#include "theme.h"
 
 struct _MetaScreen
 {
@@ -30,11 +31,26 @@ struct _MetaScreen
   int number;
   Screen *xscreen;
   Window xroot;
+
+  MetaThemeEngine *engine;
+  
+  /*< private >*/
+
+  /* we only need one since we only draw to a single visual (that of
+   * root window)
+   */
+  PangoContext *pango_context;  
 };
 
 MetaScreen*   meta_screen_new                (MetaDisplay                *display,
                                               int                         number);
 void          meta_screen_free               (MetaScreen                 *screen);
 void          meta_screen_manage_all_windows (MetaScreen                 *screen);
+PangoContext* meta_screen_get_pango_context  (MetaScreen                 *screen,
+                                              const PangoFontDescription *desc,
+                                              PangoDirection              direction);
+
+MetaScreen*   meta_screen_for_x_screen       (Screen                     *xscreen);
 
 #endif
+

src/theme.c

@@ -20,26 +20,37 @@
  */
 
 #include "theme.h"
-#include <pango.h>
+#include "api.h"
-#include <pangox.h>
 
 typedef struct _DefaultFrameData DefaultFrameData;
 
 struct _DefaultFrameData
 {
   PangoLayout *layout;
-
+  GC text_gc;
-
 };
 
 static gpointer
 default_acquire_frame (MetaFrameInfo *info)
 {
   DefaultFrameData *d;
+  PangoFontDescription *desc;
+  XGCValues vals;
+  PangoColor color;
   
   d = g_new (DefaultFrameData, 1);
 
-  d->layout = NULL;
+  desc = pango_font_description_from_string ("Sans 16");
+  d->layout = pango_layout_new (meta_get_pango_context (info->screen,
+                                                        desc,
+                                                        info->frame));
+
+  color.red = color.green = color.blue = 0xffff;
+  vals.foreground = meta_get_x_pixel (info->screen, &color);
+  d->text_gc = XCreateGC (info->display,
+                          RootWindowOfScreen (info->screen),
+                          GCForeground,
+                          &vals);
   
   return d;
 }
@@ -55,15 +66,42 @@ default_release_frame (MetaFrameInfo *info,
   if (d->layout)
     g_object_unref (G_OBJECT (d->layout));
 
+  XFreeGC (info->display, d->text_gc);
+  
   g_free (d);
 }
 
+#define VERTICAL_TEXT_PAD 3
+#define LEFT_WIDTH 2
+#define RIGHT_WIDTH 2
+#define BOTTOM_HEIGHT 2
 void
 default_fill_frame_geometry (MetaFrameInfo *info,
+                             MetaFrameGeometry *geom,
                              gpointer       frame_data)
 {
+  DefaultFrameData *d;
+  PangoRectangle rect;
+  PangoColor color;
   
+  d = frame_data;
       
+  if (info->title)
+    pango_layout_set_text (d->layout, info->title, -1);
+  else
+    pango_layout_set_text (d->layout, " ", -1);
+  
+  pango_layout_get_pixel_extents (d->layout, NULL, &rect);
+
+  geom->top_height = rect.height + VERTICAL_TEXT_PAD * 2;
+  
+  geom->left_width = LEFT_WIDTH;
+  geom->right_width = RIGHT_WIDTH;
+  geom->bottom_height = BOTTOM_HEIGHT;
+
+  color.red = color.blue = color.green = 0;
+  
+  geom->background_pixel = meta_get_x_pixel (info->screen, &color);
 }
 
 void
@@ -72,8 +110,16 @@ default_expose_frame (MetaFrameInfo *info,
                       int width, int height,
                       gpointer frame_data)
 {
+  DefaultFrameData *d;
   
+  d = frame_data;
   
+  pango_x_render_layout (info->display,
+                         info->frame,
+                         d->text_gc,
+                         d->layout,
+                         LEFT_WIDTH,
+                         VERTICAL_TEXT_PAD);
 }
 
 MetaFrameControl
@@ -83,6 +129,7 @@ default_get_control (MetaFrameInfo *info,
 {
 
 
+  return META_FRAME_CONTROL_NONE;
 }
 
 MetaThemeEngine meta_default_engine = {
@@ -93,5 +140,3 @@ MetaThemeEngine meta_default_engine = {
   default_expose_frame,
   default_get_control
 };
-
-#endif

src/theme.h

@@ -22,9 +22,14 @@
 #ifndef META_THEME_H
 #define META_THEME_H
 
+/* don't add any internal headers here; theme.h is an installed/public
+ * header.
+ */
 #include <Xlib.h>
+#include <glib.h>
 
 typedef struct _MetaFrameInfo       MetaFrameInfo;
+typedef struct _MetaFrameGeometry   MetaFrameGeometry;
 typedef struct _MetaThemeEngine     MetaThemeEngine;
 
 typedef enum
@@ -39,6 +44,8 @@ typedef enum
 
 typedef enum
 {
+  META_FRAME_CONTROL_NONE,
+  META_FRAME_CONTROL_TITLE,
   META_FRAME_CONTROL_DELETE,
   META_FRAME_CONTROL_MENU,
   META_FRAME_CONTROL_ICONIFY,
@@ -57,25 +64,23 @@ struct _MetaFrameInfo
 {
   /* These are read-only to engines */
   MetaFrameFlags flags;
-  Window xwindow; /* == None in fill_frame_geometry */
+  Window frame; /* == None in fill_frame_geometry */
   Display *display;
+  Screen *screen;
   Visual *visual;
   int depth;
-  Colormap cmap;
 
-  char *title;
+  const char *title;  
 
-  /* total frame size normally, but equal to child size in
+  /* Equal to child size before fill_frame_geometry
-   * fill_frame_geometry
+   * has been called
    */
   int width;
   int height;
+};
 
-  /* Below here the engine can change things
+struct _MetaFrameGeometry
-   * in fill_frame_geometry, though defaults are already
+{  
-   * filled in.
-   */
-  
   /* border sizes (space between frame and child) */
   int left_width;
   int right_width;
@@ -100,6 +105,7 @@ struct _MetaThemeEngine
                                             gpointer       frame_data);
   
   void             (* fill_frame_geometry) (MetaFrameInfo     *info,
+                                            MetaFrameGeometry *geom,
                                             gpointer           frame_data);
 
   void             (* expose_frame)        (MetaFrameInfo *info,

src/window.c

@@ -93,6 +93,8 @@ meta_window_new (MetaDisplay *display, Window xwindow)
   window->depth = attrs.depth;
   window->xvisual = attrs.visual;
 
+  window->title = g_strdup ("Foo foo foo foo");
+  
   meta_display_register_x_window (display, &window->xwindow, window);
 
   window->frame = NULL;
@@ -108,6 +110,8 @@ meta_window_free (MetaWindow  *window)
   
   meta_display_unregister_x_window (window->display, window->xwindow);
 
+  g_free (window->title);
+  
   meta_window_destroy_frame (window);
   
   g_free (window);

src/window.h

@@ -37,6 +37,7 @@ struct _MetaWindow
   int win_gravity;
   int depth;
   Visual *xvisual;
+  char *title;
 };
 
 MetaWindow*  meta_window_new    (MetaDisplay *display,