HGKeeper

* @file gtkdnd-hints.c GTK+ Drag-and-Drop arrow hints

* @ingroup pidgin

/* 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.

#include "gtkdnd-hints.h"

#include <gtk/gtk.h>

#include <gdk/gdk.h>

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

#ifdef _WIN32

#include "win32dep.h"

#endif

typedef struct

{

GtkWidget *widget;

gchar *filename;

gint ox;

gint oy;

} HintWindowInfo;

/**

* Info about each hint widget. See DndHintWindowId 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 GtkWidget *

dnd_hints_init_window(const gchar *fname)

{

GdkPixbuf *pixbuf;

GdkPixmap *pixmap;

GdkBitmap *bitmap;

GtkWidget *pix;

GtkWidget *win;

pixbuf = gdk_pixbuf_new_from_file(fname, NULL);

g_return_val_if_fail(pixbuf, NULL);

gdk_pixbuf_render_pixmap_and_mask(pixbuf, &pixmap, &bitmap, 128);

g_object_unref(G_OBJECT(pixbuf));

gtk_widget_push_colormap(gdk_rgb_get_colormap());

win = gtk_window_new(GTK_WINDOW_POPUP);

pix = gtk_image_new_from_pixmap(pixmap, bitmap);

gtk_container_add(GTK_CONTAINER(win), pix);

gtk_widget_shape_combine_mask(win, bitmap, 0, 0);

gtk_widget_pop_colormap();

g_object_unref(G_OBJECT(pixmap));

g_object_unref(G_OBJECT(bitmap));

gtk_widget_show_all(pix);

return win;

}

static void

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

{

gint ox, oy, width, height;

if (w->parent && w->parent->window == w->window)

{

get_widget_coords(w->parent, &ox, &oy, NULL, NULL);

height = w->allocation.height;

width = w->allocation.width;

}

else

{

gdk_window_get_origin(w->window, &ox, &oy);

gdk_drawable_get_size(w->window, &width, &height);

}

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(DATADIR, "pixmaps", "pidgin",

hint_windows[i].filename, NULL);

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

g_free(fname);

}

void

dnd_hints_hide_all(void)

{

gint i;

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

dnd_hints_hide(i);

}

void

dnd_hints_hide(DndHintWindowId i)

{

GtkWidget *w = hint_windows[i].widget;

if (w && GTK_IS_WIDGET(w))

gtk_widget_hide(w);

}

void

dnd_hints_show(DndHintWindowId 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

dnd_hints_show_relative(DndHintWindowId id, GtkWidget *widget,

DndHintPosition horiz, DndHintPosition vert)

{

gint x1, x2, y1, y2;

gint x = 0, y = 0;

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

x1 += widget->allocation.x; x2 += widget->allocation.x;

y1 += widget->allocation.y; y2 += widget->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 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 dnd_hints_show_relative");

break;

}

dnd_hints_show(id, x, y);

}

pidgin/pidgin