def simple_composite_test_one(interp_type, source_pixel, source_alpha, destination_pixel, destination_alpha, expected_result): print "simple_composite_test_one (%s, %s, %s, %s, %s, %s)" % \ (interp_type, source_pixel, source_alpha, destination_pixel, destination_alpha, expected_result) source_pixbuf = GdkPixbuf.GdkPixbufBlank(GdkPixbuf.COLORSPACE_RGB, source_alpha, 8, 32, 32) destination_pixbuf = GdkPixbuf.GdkPixbufBlank(GdkPixbuf.COLORSPACE_RGB, destination_alpha, 8, 32, 32) fill_with_pixel(source_pixbuf, source_pixel) fill_with_pixel(destination_pixbuf, destination_pixel) GdkPixbuf.pixbuf_composite(source_pixbuf, destination_pixbuf, 0, 0, 32, 32, 0, 0, 1, 1, interp_type, 0xFF) result_pixel = load_pixel (destination_pixbuf.get_pixels(), 16 * destination_pixbuf.get_rowstride() + \ 16 * destination_pixbuf.get_n_channels(), destination_alpha) if result_pixel != expected_result: if type == GdkPixbuf.INTERP_NEAREST: interpolation_type = "GdkPixbuf.INTERP_NEAREST" elif type == GdkPixbuf.INTERP_TILES: interpolation_type = "GdkPixbuf.INTERP_TILES" elif type == GdkPixbuf.INTERP_BILINEAR: interpolation_type = "GdkPixbuf.INTERP_BILINEAR" elif type == GdkPixbuf.INTERP_HYPER: interpolation_type = "GdkPixbuf.INTERP_HYPER" else: interpolation_type = "???" if source_alpha: source_string = "0x%08X" % source_pixel else: source_string = "0x%06X" % source_pixel if destination_alpha: destination_string = "0x%08X" % destination_pixel result_string = "0x%08X" % result_pixel expected_string = "0x%08X" % expected_result else: destination_string = "0x%06X" % destination_pixel result_string = "0x%06X" % result_pixel expected_string = "0x%06X" % expected_result print "ERROR **" return FALSE return TRUE
def expose_cb(widget, event): global pixbuf, interp_type, overall_alpha # gdk_window_set_back_pixmap (widget->window, NULL, FALSE); event_x, event_y, event_width, event_height = event.area widget_alloc = widget.get_allocation() widget_alloc_width = widget_alloc[2] widget_alloc_height = widget_alloc[3] dest = GdkPixbuf.GdkPixbufBlank(GdkPixbuf.COLORSPACE_RGB, FALSE, 8, event_width, event_height) GdkPixbuf.pixbuf_composite_color( pixbuf, dest, 0, 0, event_width, event_height, -event_x, -event_y, widget_alloc_width / pixbuf.get_width() + 0.0, widget_alloc_height / pixbuf.get_height() + 0.0, interp_type, overall_alpha, event_x, event_y, 16, 0xaaaaaa, 0x555555) dest.render_to_drawable(widget.get_window(), widget.get_style().fg_gc[STATE_NORMAL], 0, 0, event_x, event_y, event_width, event_height, GDK.RGB_DITHER_NORMAL, event_x, event_y) del dest return TRUE
#!/usr/bin/python import gtklib from gtk import * import GdkPixbuf from Test import * pixbuf = GdkPixbuf.GdkPixbufFromFile("pic.png") show_pixbuf(pixbuf, "pic.png") #pixbuf_scaled = pixbuf.scale (20, 30, 70, 80, # 0, 0, 0, 0, GdkPixbuf.INTERP_NEAREST) pixbuf_scaled = GdkPixbuf.GdkPixbufBlank(0, TRUE, 8, 150, 150) pixbuf.scale(pixbuf_scaled, 20, 30, 70, 80, 0, 0, 0.5, 0.5, GdkPixbuf.INTERP_NEAREST) show_pixbuf(pixbuf_scaled, "scaled pic.png") pixbuf_composited = GdkPixbuf.GdkPixbufBlank(0, TRUE, 8, 150, 150) GdkPixbuf.pixbuf_composite(pixbuf, pixbuf_composited, 20, 20, 100, 80, 0, 0, 1.0, 1.0, GdkPixbuf.INTERP_NEAREST, 200) show_pixbuf(pixbuf_composited, "pixbuf_composited") pixbuf_composited_color = GdkPixbuf.GdkPixbufBlank(0, TRUE, 8, 150, 150) GdkPixbuf.pixbuf_composite_color(pixbuf, pixbuf_composited_color, 30, 15, 100, 90, 10, 18, 0.7, 0.7, GdkPixbuf.INTERP_HYPER, 0, 2, 5, 16, 20000, 40000) show_pixbuf(pixbuf_composited_color, "pixubf_composited_color") app() mainloop()
win.set_usize (200, 200) button = GtkButton ("quit") button.connect ("clicked", mainquit) win.add (button) win.show_all () files = ["pic.jpg", "pic.gif", "pic.xpm", "pic.ppm", "pic.png"] for file in files: pixbuf = GdkPixbuf.GdkPixbufFromFile (file) show_pixbuf (pixbuf, file) pixbuf_copy = pixbuf.copy () show_pixbuf (pixbuf_copy, "this is a copy()") pixbuf = GdkPixbuf.GdkPixbufBlank (colorspace=GdkPixbuf.COLORSPACE_RGB, has_alpha=TRUE, bits_per_sample=8, width=50, height=50) show_pixbuf (pixbuf, "new with alpha=TRUE") pixbuf = GdkPixbuf.GdkPixbufBlank (colorspace=GdkPixbuf.COLORSPACE_RGB, has_alpha=FALSE, bits_per_sample=8, width=50, height=50) show_pixbuf (pixbuf, "new with alpha=FALSE") f = open ("pic.ppm", "r") magic_number = f.readline () line = f.readline () import string width, height = string.split (line) width = string.atoi (width) height = string.atoi (height)