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mutter-performance-source/src/tabpopup.c
Havoc Pennington 0895abd894 put a random cap on number of characters in the title of each window, bug 
2003-09-29  Havoc Pennington  <hp@redhat.com>

	* src/tabpopup.c (meta_ui_tab_popup_new): put a random cap on
	number of characters in the title of each window, bug #109301
2003-09-29 23:42:45 +00:00

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/* Metacity popup window thing showing windows you can tab to */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2002 Red Hat, Inc.
*
* 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 <config.h>
#include "util.h"
#include "core.h"
#include "tabpopup.h"
#include "workspace.h" /* FIXME should not be included in this file */
#include "draw-workspace.h"
#include "frame.h"
#include <gtk/gtk.h>
#include <math.h>
#define OUTSIDE_SELECT_RECT 2
#define INSIDE_SELECT_RECT 2
typedef struct _TabEntry TabEntry;
struct _TabEntry
{
MetaTabEntryKey key;
char *title;
GdkPixbuf *icon;
GtkWidget *widget;
GdkRectangle rect;
GdkRectangle inner_rect;
guint blank : 1;
};
struct _MetaTabPopup
{
GtkWidget *window;
GtkWidget *label;
GList *current;
GList *entries;
TabEntry *current_selected_entry;
GtkWidget *outline_window;
gboolean outline;
};
static GtkWidget* selectable_image_new (GdkPixbuf *pixbuf);
static void select_image (GtkWidget *widget);
static void unselect_image (GtkWidget *widget);
static GtkWidget* selectable_workspace_new (MetaWorkspace *workspace);
static void select_workspace (GtkWidget *widget);
static void unselect_workspace (GtkWidget *widget);
static gboolean
outline_window_expose (GtkWidget *widget,
GdkEventExpose *event,
gpointer data)
{
MetaTabPopup *popup;
int w, h;
TabEntry *te;
popup = data;
if (!popup->outline || popup->current_selected_entry == NULL)
return FALSE;
te = popup->current_selected_entry;
gdk_window_get_size (widget->window, &w, &h);
gdk_draw_rectangle (widget->window,
widget->style->white_gc,
FALSE,
0, 0,
te->rect.width - 1,
te->rect.height - 1);
gdk_draw_rectangle (widget->window,
widget->style->white_gc,
FALSE,
te->inner_rect.x - 1, te->inner_rect.y - 1,
te->inner_rect.width + 1,
te->inner_rect.height + 1);
return FALSE;
}
static char*
utf8_strndup (const char *src,
int n)
{
const gchar *s = src;
while (n && *s)
{
s = g_utf8_next_char (s);
n--;
}
return g_strndup (src, s - src);
}
MetaTabPopup*
meta_ui_tab_popup_new (const MetaTabEntry *entries,
int screen_number,
int entry_count,
int width,
gboolean outline)
{
MetaTabPopup *popup;
int i, left, right, top, bottom;
GList *tab_entries;
int height;
GtkWidget *table;
GtkWidget *vbox;
GtkWidget *align;
GList *tmp;
GtkWidget *frame;
int max_label_width; /* the actual max width of the labels we create */
AtkObject *obj;
int max_chars_per_title; /* max chars we allow in a label */
GdkScreen *screen;
popup = g_new (MetaTabPopup, 1);
popup->outline_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_screen (GTK_WINDOW (popup->outline_window),
gdk_display_get_screen (gdk_display_get_default (),
screen_number));
gtk_widget_set_app_paintable (popup->outline_window, TRUE);
gtk_widget_realize (popup->outline_window);
g_signal_connect (G_OBJECT (popup->outline_window), "expose_event",
G_CALLBACK (outline_window_expose), popup);
popup->window = gtk_window_new (GTK_WINDOW_POPUP);
screen = gdk_display_get_screen (gdk_display_get_default (),
screen_number);
gtk_window_set_screen (GTK_WINDOW (popup->window),
screen);
gtk_window_set_position (GTK_WINDOW (popup->window),
GTK_WIN_POS_CENTER_ALWAYS);
/* enable resizing, to get never-shrink behavior */
gtk_window_set_resizable (GTK_WINDOW (popup->window),
TRUE);
popup->current = NULL;
popup->entries = NULL;
popup->current_selected_entry = NULL;
popup->outline = outline;
/* make max title size some random relationship to the screen,
* avg char width of our font would be a better number.
*/
max_chars_per_title = gdk_screen_get_width (screen) / 15;
tab_entries = NULL;
for (i = 0; i < entry_count; ++i)
{
TabEntry *te;
te = g_new (TabEntry, 1);
te->key = entries[i].key;
te->title = utf8_strndup (entries[i].title, max_chars_per_title);
te->widget = NULL;
te->icon = entries[i].icon;
te->blank = entries[i].blank;
if (te->icon)
g_object_ref (G_OBJECT (te->icon));
if (outline)
{
te->rect.x = entries[i].x;
te->rect.y = entries[i].y;
te->rect.width = entries[i].width;
te->rect.height = entries[i].height;
te->inner_rect.x = entries[i].inner_x;
te->inner_rect.y = entries[i].inner_y;
te->inner_rect.width = entries[i].inner_width;
te->inner_rect.height = entries[i].inner_height;
}
tab_entries = g_list_prepend (tab_entries, te);
}
popup->entries = g_list_reverse (tab_entries);
g_assert (width > 0);
height = i / width;
if (i % width)
height += 1;
table = gtk_table_new (height, width, FALSE);
vbox = gtk_vbox_new (FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_set_border_width (GTK_CONTAINER (table), 1);
gtk_container_add (GTK_CONTAINER (popup->window),
frame);
gtk_container_add (GTK_CONTAINER (frame),
vbox);
align = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), align, TRUE, TRUE, 0);
gtk_container_add (GTK_CONTAINER (align),
table);
popup->label = gtk_label_new ("");
obj = gtk_widget_get_accessible (popup->label);
atk_object_set_role (obj, ATK_ROLE_STATUSBAR);
gtk_misc_set_padding (GTK_MISC (popup->label), 3, 3);
gtk_box_pack_end (GTK_BOX (vbox), popup->label, FALSE, FALSE, 0);
max_label_width = 0;
top = 0;
bottom = 1;
tmp = popup->entries;
while (tmp && top < height)
{
left = 0;
right = 1;
while (tmp && left < width)
{
GtkWidget *image;
GtkRequisition req;
TabEntry *te;
te = tmp->data;
if (te->blank)
{
/* just stick a widget here to avoid special cases */
image = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);
}
else if (outline)
{
image = selectable_image_new (te->icon);
gtk_misc_set_padding (GTK_MISC (image),
INSIDE_SELECT_RECT + OUTSIDE_SELECT_RECT + 1,
INSIDE_SELECT_RECT + OUTSIDE_SELECT_RECT + 1);
gtk_misc_set_alignment (GTK_MISC (image), 0.5, 0.5);
}
else
{
image = selectable_workspace_new ((MetaWorkspace *) te->key);
}
te->widget = image;
gtk_table_attach (GTK_TABLE (table),
te->widget,
left, right, top, bottom,
0, 0,
0, 0);
/* Efficiency rules! */
gtk_label_set_text (GTK_LABEL (popup->label),
te->title);
gtk_widget_size_request (popup->label, &req);
max_label_width = MAX (max_label_width, req.width);
tmp = tmp->next;
++left;
++right;
}
++top;
++bottom;
}
/* remove all the temporary text */
gtk_label_set_text (GTK_LABEL (popup->label), "");
max_label_width += 20; /* add random padding */
gtk_window_set_default_size (GTK_WINDOW (popup->window),
max_label_width,
-1);
return popup;
}
static void
free_entry (gpointer data, gpointer user_data)
{
TabEntry *te;
te = data;
g_free (te->title);
if (te->icon)
g_object_unref (G_OBJECT (te->icon));
g_free (te);
}
void
meta_ui_tab_popup_free (MetaTabPopup *popup)
{
meta_verbose ("Destroying tab popup window\n");
gtk_widget_destroy (popup->outline_window);
gtk_widget_destroy (popup->window);
g_list_foreach (popup->entries, free_entry, NULL);
g_list_free (popup->entries);
g_free (popup);
}
void
meta_ui_tab_popup_set_showing (MetaTabPopup *popup,
gboolean showing)
{
if (showing)
{
gtk_widget_show_all (popup->window);
}
else
{
if (GTK_WIDGET_VISIBLE (popup->window))
{
meta_verbose ("Hiding tab popup window\n");
gtk_widget_hide (popup->window);
meta_core_increment_event_serial (gdk_display);
}
}
}
static void
display_entry (MetaTabPopup *popup,
TabEntry *te)
{
GdkRectangle rect;
GdkRegion *region;
GdkRegion *inner_region;
if (popup->current_selected_entry)
{
if (popup->outline)
unselect_image (popup->current_selected_entry->widget);
else
unselect_workspace (popup->current_selected_entry->widget);
}
gtk_label_set_text (GTK_LABEL (popup->label), te->title);
if (popup->outline)
select_image (te->widget);
else
select_workspace (te->widget);
if (popup->outline)
{
/* Do stuff behind gtk's back */
gdk_window_hide (popup->outline_window->window);
meta_core_increment_event_serial (gdk_display);
rect = te->rect;
rect.x = 0;
rect.y = 0;
gdk_window_move_resize (popup->outline_window->window,
te->rect.x, te->rect.y,
te->rect.width, te->rect.height);
gdk_window_set_background (popup->outline_window->window,
&popup->outline_window->style->black);
region = gdk_region_rectangle (&rect);
inner_region = gdk_region_rectangle (&te->inner_rect);
gdk_region_subtract (region, inner_region);
gdk_region_destroy (inner_region);
gdk_window_shape_combine_region (popup->outline_window->window,
region,
0, 0);
gdk_region_destroy (region);
/* This should piss off gtk a bit, but we don't want to raise
* above the tab popup
*/
gdk_window_show_unraised (popup->outline_window->window);
}
/* Must be before we handle an expose for the outline window */
popup->current_selected_entry = te;
}
void
meta_ui_tab_popup_forward (MetaTabPopup *popup)
{
if (popup->current != NULL)
popup->current = popup->current->next;
if (popup->current == NULL)
popup->current = popup->entries;
if (popup->current != NULL)
{
TabEntry *te;
te = popup->current->data;
display_entry (popup, te);
}
}
void
meta_ui_tab_popup_backward (MetaTabPopup *popup)
{
if (popup->current != NULL)
popup->current = popup->current->prev;
if (popup->current == NULL)
popup->current = g_list_last (popup->entries);
if (popup->current != NULL)
{
TabEntry *te;
te = popup->current->data;
display_entry (popup, te);
}
}
MetaTabEntryKey
meta_ui_tab_popup_get_selected (MetaTabPopup *popup)
{
if (popup->current)
{
TabEntry *te;
te = popup->current->data;
return te->key;
}
else
return None;
}
void
meta_ui_tab_popup_select (MetaTabPopup *popup,
MetaTabEntryKey key)
{
GList *tmp;
/* Note, "key" may not be in the list of entries; other code assumes
* it's OK to pass in a key that isn't.
*/
tmp = popup->entries;
while (tmp != NULL)
{
TabEntry *te;
te = tmp->data;
if (te->key == key)
{
popup->current = tmp;
display_entry (popup, te);
return;
}
tmp = tmp->next;
}
}
#define META_TYPE_SELECT_IMAGE (meta_select_image_get_type ())
#define META_SELECT_IMAGE(obj) (GTK_CHECK_CAST ((obj), META_TYPE_SELECT_IMAGE, MetaSelectImage))
typedef struct _MetaSelectImage MetaSelectImage;
typedef struct _MetaSelectImageClass MetaSelectImageClass;
struct _MetaSelectImage
{
GtkImage parent_instance;
guint selected : 1;
};
struct _MetaSelectImageClass
{
GtkImageClass parent_class;
};
static GType meta_select_image_get_type (void) G_GNUC_CONST;
static GtkWidget*
selectable_image_new (GdkPixbuf *pixbuf)
{
GtkWidget *w;
w = g_object_new (meta_select_image_get_type (), NULL);
gtk_image_set_from_pixbuf (GTK_IMAGE (w), pixbuf);
return w;
}
static void
select_image (GtkWidget *widget)
{
META_SELECT_IMAGE (widget)->selected = TRUE;
gtk_widget_queue_draw (widget);
}
static void
unselect_image (GtkWidget *widget)
{
META_SELECT_IMAGE (widget)->selected = FALSE;
gtk_widget_queue_draw (widget);
}
static void meta_select_image_class_init (MetaSelectImageClass *klass);
static gboolean meta_select_image_expose_event (GtkWidget *widget,
GdkEventExpose *event);
static GtkImageClass *parent_class;
GType
meta_select_image_get_type (void)
{
static GtkType image_type = 0;
if (!image_type)
{
static const GTypeInfo image_info =
{
sizeof (MetaSelectImageClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) meta_select_image_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (MetaSelectImage),
16, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
image_type = g_type_register_static (GTK_TYPE_IMAGE, "MetaSelectImage", &image_info, 0);
}
return image_type;
}
static void
meta_select_image_class_init (MetaSelectImageClass *klass)
{
GtkWidgetClass *widget_class;
parent_class = gtk_type_class (gtk_image_get_type ());
widget_class = GTK_WIDGET_CLASS (klass);
widget_class->expose_event = meta_select_image_expose_event;
}
static gboolean
meta_select_image_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
if (META_SELECT_IMAGE (widget)->selected)
{
int x, y, w, h;
GtkMisc *misc;
misc = GTK_MISC (widget);
x = (widget->allocation.x * (1.0 - misc->xalign) +
(widget->allocation.x + widget->allocation.width
- (widget->requisition.width - misc->xpad * 2)) *
misc->xalign) + 0.5;
y = (widget->allocation.y * (1.0 - misc->yalign) +
(widget->allocation.y + widget->allocation.height
- (widget->requisition.height - misc->ypad * 2)) *
misc->yalign) + 0.5;
x -= INSIDE_SELECT_RECT + 1;
y -= INSIDE_SELECT_RECT + 1;
w = widget->requisition.width - OUTSIDE_SELECT_RECT * 2 - 1;
h = widget->requisition.height - OUTSIDE_SELECT_RECT * 2 - 1;
gdk_draw_rectangle (widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
FALSE,
x, y, w, h);
gdk_draw_rectangle (widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
FALSE,
x - 1, y - 1, w + 2, h + 2);
#if 0
gdk_draw_rectangle (widget->window,
widget->style->bg_gc[GTK_STATE_SELECTED],
TRUE,
x, y, w, h);
#endif
#if 0
gtk_paint_focus (widget->style, widget->window,
&event->area, widget, "meta-tab-image",
x, y, w, h);
#endif
}
return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
}
#define META_TYPE_SELECT_WORKSPACE (meta_select_workspace_get_type ())
#define META_SELECT_WORKSPACE(obj) (GTK_CHECK_CAST ((obj), META_TYPE_SELECT_WORKSPACE, MetaSelectWorkspace))
typedef struct _MetaSelectWorkspace MetaSelectWorkspace;
typedef struct _MetaSelectWorkspaceClass MetaSelectWorkspaceClass;
struct _MetaSelectWorkspace
{
GtkDrawingArea parent_instance;
MetaWorkspace *workspace;
guint selected : 1;
};
struct _MetaSelectWorkspaceClass
{
GtkDrawingAreaClass parent_class;
};
static GType meta_select_workspace_get_type (void) G_GNUC_CONST;
#define SELECT_OUTLINE_WIDTH 2
#define MINI_WORKSPACE_WIDTH 48
static GtkWidget*
selectable_workspace_new (MetaWorkspace *workspace)
{
GtkWidget *widget;
double screen_aspect;
widget = g_object_new (meta_select_workspace_get_type (), NULL);
screen_aspect = (double) workspace->screen->height / (double) workspace->screen->width;
/* account for select rect */
gtk_widget_set_size_request (widget,
MINI_WORKSPACE_WIDTH + SELECT_OUTLINE_WIDTH * 2,
MINI_WORKSPACE_WIDTH * screen_aspect + SELECT_OUTLINE_WIDTH * 2);
META_SELECT_WORKSPACE (widget)->workspace = workspace;
return widget;
}
static void
select_workspace (GtkWidget *widget)
{
META_SELECT_WORKSPACE(widget)->selected = TRUE;
gtk_widget_queue_draw (widget);
}
static void
unselect_workspace (GtkWidget *widget)
{
META_SELECT_WORKSPACE (widget)->selected = FALSE;
gtk_widget_queue_draw (widget);
}
static void meta_select_workspace_class_init (MetaSelectWorkspaceClass *klass);
static gboolean meta_select_workspace_expose_event (GtkWidget *widget,
GdkEventExpose *event);
GType
meta_select_workspace_get_type (void)
{
static GtkType workspace_type = 0;
if (!workspace_type)
{
static const GTypeInfo workspace_info =
{
sizeof (MetaSelectWorkspaceClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) meta_select_workspace_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (MetaSelectWorkspace),
16, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
workspace_type = g_type_register_static (GTK_TYPE_DRAWING_AREA,
"MetaSelectWorkspace",
&workspace_info,
0);
}
return workspace_type;
}
static void
meta_select_workspace_class_init (MetaSelectWorkspaceClass *klass)
{
GtkWidgetClass *widget_class;
widget_class = GTK_WIDGET_CLASS (klass);
widget_class->expose_event = meta_select_workspace_expose_event;
}
static gboolean
meta_select_workspace_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
MetaWorkspace *workspace;
WnckWindowDisplayInfo *windows;
int i, n_windows;
GList *tmp, *list;
workspace = META_SELECT_WORKSPACE (widget)->workspace;
list = meta_stack_list_windows (workspace->screen->stack, workspace);
n_windows = g_list_length (list);
windows = g_new (WnckWindowDisplayInfo, n_windows);
tmp = list;
i = 0;
while (tmp != NULL)
{
MetaWindow *window;
window = tmp->data;
if (window->skip_pager ||
window->minimized ||
window->unmaps_pending)
{
--n_windows;
}
else
{
windows[i].icon = window->icon;
windows[i].mini_icon = window->mini_icon;
windows[i].is_active = window->has_focus;
if (window->frame)
{
windows[i].x = window->frame->rect.x;
windows[i].y = window->frame->rect.y;
windows[i].width = window->frame->rect.width;
windows[i].height = window->frame->rect.height;
}
else
{
windows[i].x = window->rect.x;
windows[i].y = window->rect.y;
windows[i].width = window->rect.width;
windows[i].height = window->rect.height;
}
i++;
}
tmp = tmp->next;
}
g_list_free (list);
wnck_draw_workspace (widget,
widget->window,
SELECT_OUTLINE_WIDTH,
SELECT_OUTLINE_WIDTH,
widget->allocation.width - SELECT_OUTLINE_WIDTH * 2,
widget->allocation.height - SELECT_OUTLINE_WIDTH * 2,
workspace->screen->width,
workspace->screen->height,
NULL,
(workspace->screen->active_workspace == workspace),
windows,
n_windows);
g_free (windows);
if (META_SELECT_WORKSPACE (widget)->selected)
{
i = SELECT_OUTLINE_WIDTH - 1;
while (i >= 0)
{
gdk_draw_rectangle (widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
FALSE,
i,
i,
widget->allocation.width - i * 2 - 1,
widget->allocation.height - i * 2 - 1);
--i;
}
}
return TRUE;
}
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