diff options
Diffstat (limited to 'src/gtkutil.c')
| -rw-r--r-- | src/gtkutil.c | 132 |
1 files changed, 81 insertions, 51 deletions
diff --git a/src/gtkutil.c b/src/gtkutil.c index 1cb1004f576..3b590e0faed 100644 --- a/src/gtkutil.c +++ b/src/gtkutil.c @@ -1,6 +1,5 @@ /* Functions for creating and updating GTK widgets. - Copyright (C) 2003 - Free Software Foundation, Inc. + Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of GNU Emacs. @@ -240,6 +239,64 @@ xg_create_default_cursor (dpy) return gdk_cursor_new_for_display (gdpy, GDK_LEFT_PTR); } +/* Apply GMASK to GPIX and return a GdkPixbuf with an alpha channel. */ + +static GdkPixbuf * +xg_get_pixbuf_from_pix_and_mask (gpix, gmask, cmap) + GdkPixmap *gpix; + GdkPixmap *gmask; + GdkColormap *cmap; +{ + int x, y, width, height, rowstride, mask_rowstride; + GdkPixbuf *icon_buf, *tmp_buf; + guchar *pixels; + guchar *mask_pixels; + + gdk_drawable_get_size (gpix, &width, &height); + tmp_buf = gdk_pixbuf_get_from_drawable (NULL, gpix, cmap, + 0, 0, 0, 0, width, height); + icon_buf = gdk_pixbuf_add_alpha (tmp_buf, FALSE, 0, 0, 0); + g_object_unref (G_OBJECT (tmp_buf)); + + if (gmask) + { + GdkPixbuf *mask_buf = gdk_pixbuf_get_from_drawable (NULL, + gmask, + NULL, + 0, 0, 0, 0, + width, height); + guchar *pixels = gdk_pixbuf_get_pixels (icon_buf); + guchar *mask_pixels = gdk_pixbuf_get_pixels (mask_buf); + int rowstride = gdk_pixbuf_get_rowstride (icon_buf); + int mask_rowstride = gdk_pixbuf_get_rowstride (mask_buf); + int y; + + for (y = 0; y < height; ++y) + { + guchar *iconptr, *maskptr; + int x; + + iconptr = pixels + y * rowstride; + maskptr = mask_pixels + y * mask_rowstride; + + for (x = 0; x < width; ++x) + { + /* In a bitmap, RGB is either 255/255/255 or 0/0/0. Checking + just R is sufficient. */ + if (maskptr[0] == 0) + iconptr[3] = 0; /* 0, 1, 2 is R, G, B. 3 is alpha. */ + + iconptr += rowstride/width; + maskptr += mask_rowstride/width; + } + } + + g_object_unref (G_OBJECT (mask_buf)); + } + + return icon_buf; +} + /* For the image defined in IMG, make and return a GtkImage. For displays with 8 planes or less we must make a GdkPixbuf and apply the mask manually. Otherwise the highlightning and dimming the tool bar code in GTK does @@ -312,60 +369,15 @@ xg_get_image_for_pixmap (f, img, widget, old_widget) } else { + /* This is a workaround to make icons look good on pseudo color displays. Apparently GTK expects the images to have an alpha channel. If they don't, insensitive and activated icons will look bad. This workaround does not work on monochrome displays, and is not needed on true color/static color displays (i.e. 16 bits and higher). */ - int x, y, width, height, rowstride, mask_rowstride; - GdkPixbuf *icon_buf, *tmp_buf; - guchar *pixels; - guchar *mask_pixels; - - gdk_drawable_get_size (gpix, &width, &height); - tmp_buf = gdk_pixbuf_get_from_drawable (NULL, - gpix, - gtk_widget_get_colormap (widget), - 0, 0, 0, 0, width, height); - icon_buf = gdk_pixbuf_add_alpha (tmp_buf, FALSE, 0, 0, 0); - g_object_unref (G_OBJECT (tmp_buf)); - - if (gmask) - { - GdkPixbuf *mask_buf = gdk_pixbuf_get_from_drawable (NULL, - gmask, - NULL, - 0, 0, 0, 0, - width, height); - guchar *pixels = gdk_pixbuf_get_pixels (icon_buf); - guchar *mask_pixels = gdk_pixbuf_get_pixels (mask_buf); - int rowstride = gdk_pixbuf_get_rowstride (icon_buf); - int mask_rowstride = gdk_pixbuf_get_rowstride (mask_buf); - int y; - - for (y = 0; y < height; ++y) - { - guchar *iconptr, *maskptr; - int x; - - iconptr = pixels + y * rowstride; - maskptr = mask_pixels + y * mask_rowstride; - - for (x = 0; x < width; ++x) - { - /* In a bitmap, RGB is either 255/255/255 or 0/0/0. Checking - just R is sufficient. */ - if (maskptr[0] == 0) - iconptr[3] = 0; /* 0, 1, 2 is R, G, B. 3 is alpha. */ - - iconptr += rowstride/width; - maskptr += mask_rowstride/width; - } - } - - g_object_unref (G_OBJECT (mask_buf)); - } + GdkColormap *cmap = gtk_widget_get_colormap (widget); + GdkPixbuf *icon_buf = xg_get_pixbuf_from_pix_and_mask (gpix, gmask, cmap); if (! old_widget) old_widget = GTK_IMAGE (gtk_image_new_from_pixbuf (icon_buf)); @@ -940,6 +952,24 @@ xg_set_background_color (f, bg) } +/* Set the frame icon to ICON_PIXMAP/MASK. This must be done with GTK + functions so GTK does not overwrite the icon. */ + +void +xg_set_frame_icon (f, icon_pixmap, icon_mask) + FRAME_PTR f; + Pixmap icon_pixmap; + Pixmap icon_mask; +{ + GdkDisplay *gdpy = gdk_x11_lookup_xdisplay (FRAME_X_DISPLAY (f)); + GdkPixmap *gpix = gdk_pixmap_foreign_new_for_display (gdpy, icon_pixmap); + GdkPixmap *gmask = gdk_pixmap_foreign_new_for_display (gdpy, icon_mask); + GdkPixbuf *gp = xg_get_pixbuf_from_pix_and_mask (gpix, gmask, NULL); + + gtk_window_set_icon (GTK_WINDOW (FRAME_GTK_OUTER_WIDGET (f)), gp); +} + + /*********************************************************************** Dialog functions @@ -2607,7 +2637,7 @@ xg_modify_menubar_widgets (menubar, f, val, deep_p, xg_update_menubar (menubar, f, &list, list, 0, val->contents, select_cb, highlight_cb, cl_data); - if (deep_p); + if (deep_p) { widget_value *cur; |