Attachment 15879 Details for Bug 15334 – pycairo test case

pycairo test case

test-repeat-none.py (text/plain), 4.59 KB, created by Owen Taylor on 2008-04-13 09:01:18 UTC

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Creator: Owen Taylor

Created: 2008-04-13 09:01:18 UTC

Size: 4.59 KB

patch

obsolete

>#!/usr/bin/python
>
>from __future__ import division
>import gtk
>import cairo
>import math
>
>IDENTITY = 0
>ROTATE_90 = 1
>SCALE = 2
>ROTATE = 3
>
>TRANSFORMS = [
>    IDENTITY,
>    ROTATE_90,
>    SCALE,
>    ROTATE
>]
>
>SOURCE_ALPHAS = [ False, True ]
>
>FILTERS = [ cairo.FILTER_NEAREST, cairo.FILTER_BILINEAR ]
>
>SOURCE_SIZE = 16
>DEST_SIZE = 100
>PAD = 10
>
>TOTAL_SIZE = 4 * (DEST_SIZE + PAD) + PAD
>
>transform = None
>source_alpha = None
>source_filter = None
>
>def draw_sample(cr, x, y, transform, filter, source_alpha):
>    cr.save()
>    cr.translate(x, y)
>    cr.rectangle(0, 0, DEST_SIZE, DEST_SIZE)
>    cr.clip()
>
>    if source_alpha:
>        source = cairo.ImageSurface(cairo.FORMAT_ARGB32, SOURCE_SIZE, SOURCE_SIZE)
>    else:
>        source = cairo.ImageSurface(cairo.FORMAT_RGB24, SOURCE_SIZE, SOURCE_SIZE)
>        
>    source_cr = cairo.Context(source)
>    source_cr.set_source_rgba(0, 0, 1)
>    source_cr.paint()
>
>    hole_x = hole_y = SOURCE_SIZE // 4
>    hole_width = hole_height = SOURCE_SIZE // 2
>
>    # Add some rectangles on the source image at the corners
>    source_cr.rectangle(0, 0, hole_x, hole_y)
>    source_cr.rectangle(hole_x + hole_width, 0, SOURCE_SIZE - (hole_x + hole_width), hole_y)
>    source_cr.rectangle(0, hole_y + hole_height, hole_x, SOURCE_SIZE - (hole_y + hole_height))
>    source_cr.rectangle(hole_x + hole_width, hole_y + hole_height, SOURCE_SIZE - (hole_x + hole_width), SOURCE_SIZE - (hole_y + hole_height))
>    source_cr.set_source_rgba(0, 1, 0)
>    source_cr.fill()
>    
>    if source_alpha:
>        # Cut a whole out of the middle
>        source_cr.set_operator(cairo.OPERATOR_DEST_OUT)
>        source_cr.rectangle(hole_x, hole_y, hole_width, hole_height)
>        source_cr.set_source_rgba(1, 1, 1)
>        source_cr.fill()
>
>    cr.translate(DEST_SIZE // 2, DEST_SIZE // 2)
>
>    if transform == IDENTITY:
>        pass
>    elif transform == ROTATE_90:
>        cr.rotate(math.pi / 2)
>    elif transform == SCALE:
>        cr.scale(11/3, 11/3)
>    elif transform == ROTATE:
>        cr.rotate(math.pi / 3)
>        cr.scale(11/3, 11/3)
>
>    cr.translate(- SOURCE_SIZE // 2, - SOURCE_SIZE // 2)
>    
>#     # Draw a shape in red under the bounds of the surface
>
>#     cr.move_to(0, 0)
>#     cr.line_to(SOURCE_SIZE, 0)
>#     cr.line_to(SOURCE_SIZE, SOURCE_SIZE)
>#     cr.line_to(0, SOURCE_SIZE)
>#     cr.close_path()
>
>#     if source_alpha:
>#         # Cut the hole out of the shape
>#         cr.move_to(hole_x, hole_y)
>#         cr.line_to(hole_x, hole_y +  hole_height)
>#         cr.line_to(hole_x + hole_height, hole_y + hole_height)
>#         cr.line_to(hole_x + hole_height, hole_y)
>#         cr.close_path()
>        
>#     cr.set_source_rgba(1, 0, 0)
>#     cr.fill()
>
>    # Draw the transformed surface
>
>    cr.set_source_surface(source)
>    cr.get_source().set_filter(filter)
>#    cr.set_operator(cairo.OPERATOR_SOURCE)
>    cr.paint()
>
>    cr.restore()
>        
>def draw(cr):
>    cr.set_source_rgba(1, 1, 1)
>    cr.paint()
>
>    y = PAD
>    for source_alpha in SOURCE_ALPHAS:
>        for filter in FILTERS:
>            x = PAD
>            for transform in TRANSFORMS:
>                draw_sample(cr, x, y, transform, filter, source_alpha)
>                x += DEST_SIZE + PAD
>            y += DEST_SIZE + PAD
>    
>def on_expose(widget, event):
>    cr = widget.window.cairo_create()
>    draw(cr)
>
>def dump_image():
>    width, height = w.size_request()
>    surface = cairo.ImageSurface(cairo.FORMAT_RGB24, width, height)
>    cr = cairo.Context(surface)
>    draw(cr)
>    surface.write_to_png("/tmp/test-repeat-none-image.png")
>
>def dump_pixmap():
>    cmap = gtk.gdk.screen_get_default().get_rgb_colormap()
>    out = gtk.gdk.Pixmap(None, TOTAL_SIZE, TOTAL_SIZE, cmap.get_visual().depth)
>    out.set_colormap(cmap)
>    cr = out.cairo_create()
>    draw(cr)
>    cr.get_target().write_to_png("/tmp/test-repeat-none-pixmap.png")
>    
>def reset():
>    w.set_size_request(TOTAL_SIZE, TOTAL_SIZE)
>    w.queue_draw()
>    
>def on_key_press(widget, event):
>    if event.keyval in (gtk.keysyms.d, gtk.keysyms.D):
>        dump_image()
>        return True
>    if event.keyval in (gtk.keysyms.p, gtk.keysyms.P):
>        dump_pixmap()
>        return True
>    elif event.keyval in (gtk.keysyms.r, gtk.keysyms.R):
>        reset()
>        return True
>    elif event.keyval in (gtk.keysyms.q, gtk.keysyms.Q):
>        gtk.main_quit()
>        return True
>    elif event.keyval in (gtk.keysyms.Escape,):
>        transform = None
>        source_alpha = None
>        filter = None
>        reset()
>        return True
>
>    return False
>
>w = gtk.Window()
>w.set_app_paintable(True)
>w.set_resizable(False)
>
>reset()
>
>w.connect('expose-event', on_expose)
>w.connect('key-press-event', on_key_press)
>
>w.show()
>gtk.main()

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Attachments on bug 15334: 15640 | 15878 | 15879 | 15880 | 15881 | 15882 | 15883 | 15884

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