Fixed #7 (crash when resizing windows really small)
[rodin/chimara.git] / libchimara / chimara-glk.c
index 00cc8b4c6b11e191957b5277a60b3bcc48aa8542..b9e0437e3249a48eda74b6016eb2ace27a020e71 100644 (file)
@@ -200,11 +200,14 @@ request_recurse(winid_t win, GtkRequisition *requisition, guint spacing)
                GtkRequisition child1, child2;
                request_recurse(win->window_node->children->data, &child1, spacing);
                request_recurse(win->window_node->children->next->data, &child2, spacing);
+
+               glui32 division = win->split_method & winmethod_DivisionMask;
+               glui32 direction = win->split_method & winmethod_DirMask;
                
                /* If the split is fixed, get the size of the fixed child */
-               if((win->split_method & winmethod_DivisionMask) == winmethod_Fixed)
+               if(division == winmethod_Fixed)
                {
-                       switch(win->split_method & winmethod_DirMask)
+                       switch(direction)
                        {
                                case winmethod_Left:
                                        child1.width = win->key_window?
@@ -230,7 +233,7 @@ request_recurse(winid_t win, GtkRequisition *requisition, guint spacing)
                }
                
                /* Add the children's requests */
-               switch(win->split_method & winmethod_DirMask)
+               switch(direction)
                {
                        case winmethod_Left:
                        case winmethod_Right:
@@ -282,15 +285,24 @@ allocate_recurse(winid_t win, GtkAllocation *allocation, guint spacing)
 {
        if(win->type == wintype_Pair)
        {
+               glui32 division = win->split_method & winmethod_DivisionMask;
+               glui32 direction = win->split_method & winmethod_DirMask;
+
+               /* If the space gets too small to honor the spacing property, then just 
+                ignore spacing in this window and below. */
+               if( (spacing > allocation->width && (direction == winmethod_Left || direction == winmethod_Right))
+                  || (spacing > allocation->height && (direction == winmethod_Above || direction == winmethod_Below)) )
+                       spacing = 0;
+               
                GtkAllocation child1, child2;
                child1.x = allocation->x;
                child1.y = allocation->y;
                
-               if((win->split_method & winmethod_DivisionMask) == winmethod_Fixed)
+               if(division == winmethod_Fixed)
                {
                        /* If the key window has been closed, then default to 0; otherwise
                         use the key window to determine the size */
-                       switch(win->split_method & winmethod_DirMask)
+                       switch(direction)
                        {
                                case winmethod_Left:
                                        child1.width = win->key_window? 
@@ -317,46 +329,46 @@ allocate_recurse(winid_t win, GtkAllocation *allocation, guint spacing)
                else /* proportional */
                {
                        gdouble fraction = win->constraint_size / 100.0;
-                       switch(win->split_method & winmethod_DirMask)
+                       switch(direction)
                        {
                                case winmethod_Left:
-                                       child1.width = (glui32) ceil( fraction * (allocation->width - spacing) );
+                                       child1.width = MAX(0, (gint)ceil(fraction * (allocation->width - spacing)) );
                                        break;
                                case winmethod_Right:
-                                       child2.width = (glui32) ceil( fraction * (allocation->width - spacing) );
+                                       child2.width = MAX(0, (gint)ceil(fraction * (allocation->width - spacing)) );
                                        break;
                                case winmethod_Above:
-                                       child1.height = (glui32) ceil( fraction * (allocation->height - spacing) );
+                                       child1.height = MAX(0, (gint)ceil(fraction * (allocation->height - spacing)) );
                                        break;
                                case winmethod_Below:
-                                       child2.height = (glui32) ceil( fraction * (allocation->height - spacing) );
+                                       child2.height = MAX(0, (gint)ceil(fraction * (allocation->height - spacing)) );
                                        break;
                        }
                }
                
                /* Fill in the rest of the size requisitions according to the child specified above */
-               switch(win->split_method & winmethod_DirMask)
+               switch(direction)
                {
                        case winmethod_Left:
-                               child2.width = allocation->width - spacing - child1.width;
+                               child2.width = MAX(0, allocation->width - spacing - child1.width);
                                child2.x = child1.x + child1.width + spacing;
                                child2.y = child1.y;
                                child1.height = child2.height = allocation->height;
                                break;
                        case winmethod_Right:
-                               child1.width = allocation->width - spacing - child2.width;
+                               child1.width = MAX(0, allocation->width - spacing - child2.width);
                                child2.x = child1.x + child1.width + spacing;
                                child2.y = child1.y;
                                child1.height = child2.height = allocation->height;
                                break;
                        case winmethod_Above:
-                               child2.height = allocation->height - spacing - child1.height;
+                               child2.height = MAX(0, allocation->height - spacing - child1.height);
                                child2.x = child1.x;
                                child2.y = child1.y + child1.height + spacing;
                                child1.width = child2.width = allocation->width;
                                break;
                        case winmethod_Below:
-                               child1.height = allocation->height - spacing - child2.height;
+                               child1.height = MAX(0, allocation->height - spacing - child2.height);
                                child2.x = child1.x;
                                child2.y = child1.y + child1.height + spacing;
                                child1.width = child2.width = allocation->width;
@@ -913,14 +925,37 @@ chimara_glk_get_spacing(ChimaraGlk *glk)
        return priv->spacing;
 }
 
+struct StartupData {
+       glk_main_t glk_main;
+       glkunix_startup_code_t glkunix_startup_code;
+       glkunix_startup_t args;
+};
+
 /* glk_enter() is the actual function called in the new thread in which glk_main() runs.  */
 static gpointer
-glk_enter(gpointer glk_main)
+glk_enter(struct StartupData *startup)
 {
     extern ChimaraGlkPrivate *glk_data;
-
+       
+       /* Run startup function */
+       if(startup->glkunix_startup_code) {
+               glk_data->in_startup = TRUE;
+               int result = startup->glkunix_startup_code(&startup->args);
+               glk_data->in_startup = FALSE;
+               
+               int i = 0;
+               while(i < startup->args.argc)
+                       g_free(startup->args.argv[i++]);
+               g_free(startup->args.argv);
+               
+               if(!result)
+                       return NULL;
+       }
+       
+       /* Run main function */
     g_signal_emit_by_name(glk_data->self, "started");
-       ((glk_main_t)glk_main)();
+       (startup->glk_main)();
+       g_slice_free(struct StartupData, startup);      
        g_signal_emit_by_name(glk_data->self, "stopped");
        return NULL;
 }
@@ -952,10 +987,9 @@ chimara_glk_run(ChimaraGlk *glk, gchar *plugin, int argc, char *argv[], GError *
     g_return_val_if_fail(plugin, FALSE);
     
     ChimaraGlkPrivate *priv = CHIMARA_GLK_PRIVATE(glk);
+       struct StartupData *startup = g_slice_new0(struct StartupData);
     
     /* Open the module to run */
-    glk_main_t glk_main;
-       glkunix_startup_code_t glkunix_startup_code;
     g_assert( g_module_supported() );
     priv->program = g_module_open(plugin, G_MODULE_BIND_LAZY);
     
@@ -964,51 +998,35 @@ chimara_glk_run(ChimaraGlk *glk, gchar *plugin, int argc, char *argv[], GError *
         g_warning( "Error opening module: %s", g_module_error() );
         return FALSE;
     }
-    if( !g_module_symbol(priv->program, "glk_main", (gpointer *) &glk_main) )
+    if( !g_module_symbol(priv->program, "glk_main", (gpointer *) &startup->glk_main) )
     {
         g_warning( "Error finding glk_main(): %s", g_module_error() );
         return FALSE;
     }
 
-       extern ChimaraGlkPrivate *glk_data;
-    /* Set the thread's private data */
-    /* TODO: Do this with a GPrivate */
-    glk_data = priv;
-       
-    if( g_module_symbol(priv->program, "glkunix_startup_code", (gpointer *) &glkunix_startup_code) )
+    if( g_module_symbol(priv->program, "glkunix_startup_code", (gpointer *) &startup->glkunix_startup_code) )
     {
-               glkunix_startup_t data;
                glkunix_argumentlist_t *glkunix_arguments;
-               gboolean startup_succeeded;
 
-               if( !(g_module_symbol(priv->program, "glkunix_arguments", (gpointer *) &glkunix_arguments) && parse_command_line(glkunix_arguments, argc, argv, &data)) )
+               if( !(g_module_symbol(priv->program, "glkunix_arguments", (gpointer *) &glkunix_arguments) 
+                         && parse_command_line(glkunix_arguments, argc, argv, &startup->args)) )
                {
                        /* arguments could not be parsed, so create data ourselves */
-                       data.argc = 1;
-                       data.argv = g_new0(gchar *, 1);
+                       startup->args.argc = 1;
+                       startup->args.argv = g_new0(gchar *, 1);
                }
 
                /* Set the program name */
-               data.argv[0] = g_strdup(plugin);
-               
-               priv->in_startup = TRUE;
-               startup_succeeded = glkunix_startup_code(&data);
-               priv->in_startup = FALSE;
-               
-               gchar **ptr = data.argv;
-               while(*ptr++)
-                       g_free(*ptr);
-               g_free(data.argv);
-               
-               if(!startup_succeeded)
-               {
-                       chimara_glk_stopped(glk);
-                       return FALSE;
-               }
+               startup->args.argv[0] = g_strdup(plugin);
     }
+
+       extern ChimaraGlkPrivate *glk_data;
+    /* Set the thread's private data */
+    /* TODO: Do this with a GPrivate */
+    glk_data = priv;
        
     /* Run in a separate thread */
-       priv->thread = g_thread_create(glk_enter, glk_main, TRUE, error);
+       priv->thread = g_thread_create((GThreadFunc)glk_enter, startup, TRUE, error);
        
        return !(priv->thread == NULL);
 }
@@ -1026,7 +1044,7 @@ chimara_glk_stop(ChimaraGlk *glk)
 {
     g_return_if_fail(glk || CHIMARA_IS_GLK(glk));
     /* TODO: check if glk is actually running a program */
-    signal_abort();
+       signal_abort();
 }
 
 /**