/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * Copyright (C) 2003 Richard Hult * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #include #include #include #include "drw-utils.h" static GdkPixbuf * create_tile_pixbuf (GdkPixbuf *dest_pixbuf, GdkPixbuf *src_pixbuf, GdkRectangle *field_geom, guint alpha, GdkColor *bg_color) { gboolean need_composite; gboolean use_simple; gdouble cx, cy; gdouble colorv; gint pwidth, pheight; need_composite = (alpha < 255 || gdk_pixbuf_get_has_alpha (src_pixbuf)); use_simple = (dest_pixbuf == NULL); if (dest_pixbuf == NULL) dest_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, field_geom->width, field_geom->height); if (need_composite && use_simple) colorv = ((bg_color->red & 0xff00) << 8) | (bg_color->green & 0xff00) | ((bg_color->blue & 0xff00) >> 8); else colorv = 0; pwidth = gdk_pixbuf_get_width (src_pixbuf); pheight = gdk_pixbuf_get_height (src_pixbuf); for (cy = 0; cy < field_geom->height; cy += pheight) { for (cx = 0; cx < field_geom->width; cx += pwidth) { if (need_composite && !use_simple) gdk_pixbuf_composite (src_pixbuf, dest_pixbuf, cx, cy, MIN (pwidth, field_geom->width - cx), MIN (pheight, field_geom->height - cy), cx, cy, 1.0, 1.0, GDK_INTERP_BILINEAR, alpha); else if (need_composite && use_simple) gdk_pixbuf_composite_color (src_pixbuf, dest_pixbuf, cx, cy, MIN (pwidth, field_geom->width - cx), MIN (pheight, field_geom->height - cy), cx, cy, 1.0, 1.0, GDK_INTERP_BILINEAR, alpha, 65536, 65536, 65536, colorv, colorv); else gdk_pixbuf_copy_area (src_pixbuf, 0, 0, MIN (pwidth, field_geom->width - cx), MIN (pheight, field_geom->height - cy), dest_pixbuf, cx, cy); } } return dest_pixbuf; } static gboolean #if GTK_CHECK_VERSION (3, 0, 0) window_draw_event (GtkWidget *widget, cairo_t *cr, #else window_expose_event (GtkWidget *widget, GdkEventExpose *event, #endif gpointer data) { #if !GTK_CHECK_VERSION (3, 0, 0) cairo_t *context; cairo_t *cr; cairo_surface_t *surface; #endif int width; int height; gtk_window_get_size (GTK_WINDOW (widget), &width, &height); #if !GTK_CHECK_VERSION (3, 0, 0) context = gdk_cairo_create (gtk_widget_get_window (widget)); cairo_set_operator (context, CAIRO_OPERATOR_SOURCE); surface = cairo_surface_create_similar (cairo_get_target (context), CAIRO_CONTENT_COLOR_ALPHA, width, height); if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS) { goto done; } cr = cairo_create (surface); if (cairo_status (cr) != CAIRO_STATUS_SUCCESS) { goto done; } #endif cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0); cairo_set_operator (cr, CAIRO_OPERATOR_OVER); cairo_paint (cr); /* draw a box */ cairo_rectangle (cr, 0, 0, width, height); cairo_set_source_rgba (cr, 0.2, 0.2, 0.2, 0.5); cairo_fill (cr); #if !GTK_CHECK_VERSION (3, 0, 0) cairo_destroy (cr); cairo_set_source_surface (context, surface, 0, 0); cairo_paint (context); done: if (surface != NULL) { cairo_surface_destroy (surface); } cairo_destroy (context); #endif return FALSE; } static void set_pixmap_background (GtkWidget *window) { GdkScreen *screen; GdkPixbuf *tmp_pixbuf, *pixbuf, *tile_pixbuf; #if GTK_CHECK_VERSION (3, 0, 0) cairo_t *cr; #else GdkPixmap *pixmap; #endif GdkRectangle rect; GdkColor color; gint width, height; gtk_widget_realize (window); screen = gtk_widget_get_screen (window); width = gdk_screen_get_width (screen); height = gdk_screen_get_height (screen); #if GTK_CHECK_VERSION (3, 0, 0) tmp_pixbuf = gdk_pixbuf_get_from_window (gdk_screen_get_root_window (screen), 0, 0, width, height); #else tmp_pixbuf = gdk_pixbuf_get_from_drawable (NULL, gdk_screen_get_root_window (screen), gdk_screen_get_system_colormap (screen), 0, 0, 0, 0, width, height); #endif pixbuf = gdk_pixbuf_new_from_file (IMAGEDIR "/ocean-stripes.png", NULL); rect.x = 0; rect.y = 0; rect.width = width; rect.height = height; color.red = 0; color.blue = 0; color.green = 0; tile_pixbuf = create_tile_pixbuf (NULL, pixbuf, &rect, 155, &color); g_object_unref (pixbuf); gdk_pixbuf_composite (tile_pixbuf, tmp_pixbuf, 0, 0, width, height, 0, 0, 1, 1, GDK_INTERP_NEAREST, 225); g_object_unref (tile_pixbuf); #if GTK_CHECK_VERSION (3, 0, 0) cr = gdk_cairo_create (gtk_widget_get_window (window)); gdk_cairo_set_source_pixbuf (cr, tmp_pixbuf, 0, 0); cairo_paint (cr); #else pixmap = gdk_pixmap_new (gtk_widget_get_window (window), width, height, -1); gdk_draw_pixbuf (pixmap, NULL, tmp_pixbuf, 0, 0, 0, 0, width, height, GDK_RGB_DITHER_NONE, 0, 0); #endif g_object_unref (tmp_pixbuf); #if GTK_CHECK_VERSION (3, 0, 0) cairo_destroy (cr); #else gdk_window_set_back_pixmap (gtk_widget_get_window (window), pixmap, FALSE); g_object_unref (pixmap); #endif } void drw_setup_background (GtkWidget *window) { GdkScreen *screen; #if !GTK_CHECK_VERSION (3, 0, 0) GdkColormap *colormap; #endif gboolean is_composited; screen = gtk_widget_get_screen (window); #if GTK_CHECK_VERSION (3, 0, 0) is_composited = gdk_screen_is_composited (screen); #else colormap = gdk_screen_get_rgba_colormap (screen); if (colormap != NULL && gdk_screen_is_composited (screen)) { gtk_widget_set_colormap (GTK_WIDGET (window), colormap); is_composited = TRUE; } else { is_composited = FALSE; } #endif if (is_composited) { #if GTK_CHECK_VERSION (3, 0, 0) g_signal_connect (window, "draw", G_CALLBACK (window_draw_event), window); #else g_signal_connect (window, "expose-event", G_CALLBACK (window_expose_event), window); #endif } else { set_pixmap_background (window); } }