HGKeeper

/* pidgin

* Pidgin is the legal property of its developers, whose names are too numerous

* to list here. Please refer to the COPYRIGHT file distributed with this

* source distribution.

* 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301, USA.

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include "gtkdnd-hints.h"

#include <gdk/gdk.h>

#include <gdk-pixbuf/gdk-pixbuf.h>

typedef struct

{

GtkWidget *widget;

gchar *filename;

gint ox;

gint oy;

} HintWindowInfo;

* Info about each hint widget. See PidginDndHintWindowId enum.

static HintWindowInfo hint_windows[] = {

{ NULL, "arrow-up.xpm", -13/2, 0 },

{ NULL, "arrow-down.xpm", -13/2, -16 },

{ NULL, "arrow-left.xpm", 0, -13/2 },

{ NULL, "arrow-right.xpm", -16, -13/2 },

{ NULL, NULL, 0, 0 }

};

static void

dnd_hints_realized_cb(GtkWidget *window, GtkWidget *pix)

{

GdkPixbuf *pixbuf;

cairo_surface_t *surface;

cairo_region_t *region;

cairo_t *cr;

pixbuf = gtk_image_get_pixbuf(GTK_IMAGE(pix));

surface = cairo_image_surface_create(CAIRO_FORMAT_A1,

gdk_pixbuf_get_width(pixbuf),

gdk_pixbuf_get_height(pixbuf));

cr = cairo_create(surface);

gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);

cairo_paint(cr);

cairo_destroy(cr);

region = gdk_cairo_region_create_from_surface(surface);

gtk_widget_shape_combine_region(window, region);

cairo_region_destroy(region);

cairo_surface_destroy(surface);

}

static GtkWidget *

dnd_hints_init_window(const gchar *fname)

{

GdkPixbuf *pixbuf;

GtkWidget *pix;

GtkWidget *win;

pixbuf = gdk_pixbuf_new_from_file(fname, NULL);

g_return_val_if_fail(pixbuf, NULL);

win = gtk_window_new(GTK_WINDOW_POPUP);

pix = gtk_image_new_from_pixbuf(pixbuf);

gtk_container_add(GTK_CONTAINER(win), pix);

gtk_widget_show_all(pix);

g_object_unref(G_OBJECT(pixbuf));

g_signal_connect(G_OBJECT(win), "realize",

G_CALLBACK(dnd_hints_realized_cb), pix);

return win;

}

static void

get_widget_coords(GtkWidget *w, gint *x1, gint *y1, gint *x2, gint *y2)

{

gint ox, oy, width, height;

GtkWidget *parent = gtk_widget_get_parent(w);

if (parent && gtk_widget_get_window(parent) == gtk_widget_get_window(w))

{

GtkAllocation allocation;

gtk_widget_get_allocation(w, &allocation);

get_widget_coords(parent, &ox, &oy, NULL, NULL);

height = allocation.height;

width = allocation.width;

}

else

{

GdkWindow *win = gtk_widget_get_window(w);

gdk_window_get_origin(win, &ox, &oy);

width = gdk_window_get_width(win);

height = gdk_window_get_height(win);

}

if (x1) *x1 = ox;

if (y1) *y1 = oy;

if (x2) *x2 = ox + width;

if (y2) *y2 = oy + height;

}

static void

dnd_hints_init(void)

{

static gboolean done = FALSE;

gint i;

if (done)

return;

done = TRUE;

for (i = 0; hint_windows[i].filename != NULL; i++) {

gchar *fname;

fname = g_build_filename(PURPLE_DATADIR, "pixmaps", "pidgin",

hint_windows[i].filename, NULL);

hint_windows[i].widget = dnd_hints_init_window(fname);

g_free(fname);

}

void

pidgin_dnd_hints_hide_all(void)

{

gint i;

for (i = 0; hint_windows[i].filename != NULL; i++)

pidgin_dnd_hints_hide(i);

}

void

pidgin_dnd_hints_hide(PidginDndHintWindowId i)

{

GtkWidget *w = hint_windows[i].widget;

if (w && GTK_IS_WIDGET(w))

gtk_widget_hide(w);

}

void

pidgin_dnd_hints_show(PidginDndHintWindowId id, gint x, gint y)

{

GtkWidget *w;

dnd_hints_init();

w = hint_windows[id].widget;

if (w && GTK_IS_WIDGET(w))

{

gtk_window_move(GTK_WINDOW(w), hint_windows[id].ox + x,

hint_windows[id].oy + y);

gtk_widget_show(w);

}

void

pidgin_dnd_hints_show_relative(PidginDndHintWindowId id, GtkWidget *widget,

PidginDndHintPosition horiz, PidginDndHintPosition vert)

{

gint x1, x2, y1, y2;

gint x = 0, y = 0;

GtkAllocation allocation;

gtk_widget_get_allocation(widget, &allocation);

get_widget_coords(widget, &x1, &y1, &x2, &y2);

x1 += allocation.x; x2 += allocation.x;

y1 += allocation.y; y2 += allocation.y;

switch (horiz)

{

case HINT_POSITION_RIGHT: x = x2; break;

case HINT_POSITION_LEFT: x = x1; break;

case HINT_POSITION_CENTER: x = (x1 + x2) / 2; break;

default:

/* should not happen */

g_warning("Invalid parameter to pidgin_dnd_hints_show_relative");

break;

}

switch (vert)

{

case HINT_POSITION_TOP: y = y1; break;

case HINT_POSITION_BOTTOM: y = y2; break;

case HINT_POSITION_CENTER: y = (y1 + y2) / 2; break;

default:

/* should not happen */

g_warning("Invalid parameter to pidgin_dnd_hints_show_relative");

break;

}

pidgin_dnd_hints_show(id, x, y);

}

pidgin/pidgin