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################################################
## GTK-based implementation of xshm ##
################################################
import os, sys, math
from modes import KeyPressed, KeyReleased
import caching
def import_trickery():
global gtk, gdk
argv = sys.argv[:]
del sys.argv[1:]
import gtk
from gtk import gdk
sys.argv[:] = argv
import_trickery()
class Display:
def __init__(self, width, height, title, zoom="100"):
if zoom.endswith('%'):
zoom = zoom[:-1]
scale = float(zoom) / 100.0
iscale = int(scale+0.001)
if abs(scale - iscale) < 0.002:
scale = iscale
self.scale = scale
self.width = int(width * scale)
self.height = int(height * scale)
self.tempppmfile = caching.mktemp('.ppm')
# create a top level window
w = self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
w.connect("destroy", lambda w: sys.exit())
w.connect("key-press-event", self.key_press_event)
w.connect("key-release-event", self.key_release_event)
w.connect("motion-notify-event", self.motion_notify_event)
w.connect("button-press-event", self.button_press_event)
w.add_events(gdk.KEY_PRESS_MASK |
gdk.POINTER_MOTION_MASK |
gdk.BUTTON_PRESS_MASK)
w.resize(self.width, self.height)
w.set_title(title)
w.show()
self.offscreen = gtk.create_pixmap(w.window, self.width, self.height)
self.gc = gdk.gc_new(w.window)
self.gc.set_rgb_fg_color(gdk.color_parse('#000000'))
self.events_key = []
self.events_mouse = []
self.event_motion = None
pixel = "\x00\x00\x80"
hole = "\x01\x01\x01"
pb = self.pixmap(32, 32, ((pixel+hole)*16 + (hole+pixel)*16) * 16, 0x010101)
self.taskbkgnd = self.renderpixbuf(pb)
def taskbar(self, (x, y, w, h)):
scale = self.scale
x2 = x+w
y2 = y+h
x, y, x2, y2 = int(x*scale), int(y*scale), int(x2*scale), int(y2*scale)
pixmap, gc, ignored = self.taskbkgnd
for j in range(y, y2, 32):
for i in range(x, x2, 32):
gc.set_clip_origin(i, j)
self.offscreen.draw_drawable(gc, pixmap, 0, 0,
i, j, x2-i, y2-j)
def pixmap(self, w, h, data, colorkey=-1):
filename = self.tempppmfile
f = open(filename, 'wb')
print >> f, 'P6'
print >> f, w, h
print >> f, 255
f.write(data)
f.close()
pb = gdk.pixbuf_new_from_file(filename)
if colorkey >= 0:
pb = pb.add_alpha(1, chr(colorkey >> 16),
chr((colorkey >> 8) & 0xFF),
chr(colorkey & 0xFF))
if self.scale == 1:
return self.renderpixbuf((pb,))
else:
return (pb,)
def renderpixbuf(self, input):
if len(input) == 3:
return input
pb, = input
pixmap, mask = pb.render_pixmap_and_mask()
if mask is not None:
gc = gdk.gc_new(self.window.window)
gc.set_clip_mask(mask)
return (pixmap, gc, mask)
else:
return (pixmap, self.gc, None)
def getopticon(self, input, (x, y, w, h), ignored_alpha=255):
if len(input) == 3:
return None
pb, = input
scale = self.scale
newpb = gdk.Pixbuf("rgb", 1, 8, w, h)
newpb.fill(0)
pb.copy_area(x, y, w, h, newpb, 0, 0)
newpb = newpb.scale_simple(int(w*scale), int(h*scale),
gdk.INTERP_HYPER)
if newpb is None:
return None, None, None
else:
return self.renderpixbuf((newpb,))
def getppm(self, (x, y, w, h), int=int, ceil=math.ceil):
scale = self.scale
if isinstance(scale, int):
x *= scale
y *= scale
w *= scale
h *= scale
else:
w = int(ceil((x+w)*scale))
h = int(ceil((y+h)*scale))
x = int(x*scale)
y = int(y*scale)
w -= x
h -= y
bkgnd = gtk.create_pixmap(self.window.window, w, h)
bkgnd.draw_drawable(self.gc, self.offscreen, x, y, 0, 0, w, h)
return bkgnd, self.gc, None
def putppm(self, x, y, (pixmap, gc, ignored), rect=None, int=int):
if pixmap is None:
return
scale = self.scale
if rect is None:
srcx = srcy = 0
w = h = 4095
else:
srcx, srcy, w, h = rect
x = int(x*scale)
y = int(y*scale)
if gc is not self.gc:
gc.set_clip_origin(x-srcx, y-srcy)
self.offscreen.draw_drawable(gc, pixmap, srcx, srcy, x, y, w, h)
def flip(self):
self.window.window.draw_drawable(self.gc, self.offscreen,
0, 0, 0, 0, self.width, self.height)
gdk.flush()
self.events_poll()
def close(self):
self.window.destroy()
def clear(self):
self.offscreen.draw_rectangle(self.gc, 1,
0, 0, self.width, self.height)
def events_poll(self):
while gtk.events_pending():
gtk.main_iteration()
def key_press_event(self, window, event):
self.events_key.append((event.keyval, KeyPressed))
def key_release_event(self, window, event):
self.events_key.append((event.keyval, KeyReleased))
def motion_notify_event(self, window, event):
self.event_motion = (int(event.x/self.scale), int(event.y/self.scale))
def button_press_event(self, window, event):
self.events_mouse.append((int(event.x/self.scale), int(event.y/self.scale)))
def keyevents(self):
self.events_poll()
result = self.events_key
self.events_key = []
return result
def pointermotion(self):
result = self.event_motion
self.event_motion = None
return result
def mouseevents(self):
self.events_poll()
result = self.events_mouse
self.events_mouse = []
return result
def selectlist(self):
return []
def htmloptionstext(nameval):
return 'Scale image by <%s size=5>%%' % (
nameval('text', 'zoom', default='100'))
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