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dnd: Draw dnd icon with regular code

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Overriding the window background is ugly because the window background
is owned by GTK and can be reset at any time.

https://bugzilla.gnome.org/show_bug.cgi?id=742646
This commit is contained in:
Benjamin Otte 2015-01-20 01:02:59 +01:00
parent dbb8d1dd07
commit 8c534fefca
1 changed files with 64 additions and 57 deletions
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121
gtk/gtkdnd.c
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@ -3137,57 +3137,12 @@ gtk_drag_set_icon_widget (GdkDragContext *context,
}
static void
icon_window_realize (GtkWidget *window,
GtkIconHelper *helper)
gtk_drag_draw_icon_pattern (GtkWidget *window,
cairo_t *cr,
gpointer pattern)
{
cairo_surface_t *surface;
cairo_pattern_t *pattern;
cairo_t *cr;
GdkPixbuf *pixbuf;
pixbuf = _gtk_icon_helper_ensure_pixbuf (helper, gtk_widget_get_style_context (window));
surface = gdk_window_create_similar_surface (gtk_widget_get_window (window),
CAIRO_CONTENT_COLOR,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
cr = cairo_create (surface);
cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_set_source (cr, pattern);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_SATURATE);
cairo_paint (cr);
cairo_pop_group_to_source (cr);
cairo_paint (cr);
cairo_destroy (cr);
pattern = cairo_pattern_create_for_surface (surface);
gdk_window_set_background_pattern (gtk_widget_get_window (window), pattern);
cairo_pattern_destroy (pattern);
cairo_surface_destroy (surface);
if (gdk_pixbuf_get_has_alpha (pixbuf))
{
cairo_region_t *region;
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);
}
g_object_unref (pixbuf);
}
static void
@ -3243,14 +3198,62 @@ set_icon_helper (GdkDragContext *context,
}
else
{
cairo_surface_t *surface;
cairo_pattern_t *pattern;
cairo_t *cr;
GdkPixbuf *pixbuf;
gtk_widget_set_size_request (window, width, height);
g_signal_connect_closure (window, "realize",
g_cclosure_new (G_CALLBACK (icon_window_realize),
g_object_ref (helper),
(GClosureNotify)g_object_unref),
FALSE);
pixbuf = _gtk_icon_helper_ensure_pixbuf (helper, gtk_widget_get_style_context (window));
surface = gdk_window_create_similar_surface (gdk_screen_get_root_window (screen),
CAIRO_CONTENT_COLOR,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
cr = cairo_create (surface);
cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_SATURATE);
cairo_paint (cr);
cairo_pop_group_to_source (cr);
cairo_paint (cr);
cairo_destroy (cr);
pattern = cairo_pattern_create_for_surface (surface);
cairo_surface_destroy (surface);
if (gdk_pixbuf_get_has_alpha (pixbuf))
{
cairo_region_t *region;
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);
}
g_object_unref (pixbuf);
g_signal_connect_data (window,
"draw",
G_CALLBACK (gtk_drag_draw_icon_pattern),
pattern,
(GClosureNotify) cairo_pattern_destroy,
G_CONNECT_AFTER);
gtk_drag_set_icon_window (context, window, hot_x, hot_y, TRUE);
}
}
@ -3451,8 +3454,12 @@ gtk_drag_set_icon_surface (GdkDragContext *context,
cairo_pattern_set_matrix (pattern, &matrix);
}
gdk_window_set_background_pattern (gtk_widget_get_window (window), pattern);
cairo_pattern_destroy (pattern);
g_signal_connect_data (window,
"draw",
G_CALLBACK (gtk_drag_draw_icon_pattern),
pattern,
(GClosureNotify) cairo_pattern_destroy,
G_CONNECT_AFTER);
gtk_drag_set_icon_window (context, window, extents.x, extents.y, TRUE);
}