diff options
Diffstat (limited to 'sprites.py')
| -rw-r--r-- | sprites.py | 241 |
1 files changed, 115 insertions, 126 deletions
@@ -24,7 +24,7 @@ ''' sprites.py is a simple sprites library for managing graphics objects, -'sprites', on a Gtk.DrawingArea. It manages multiple sprites with +'sprites', on a gtk.DrawingArea. It manages multiple sprites with methods such as move, hide, set_layer, etc. There are two classes: @@ -68,7 +68,7 @@ Example usage: # method for converting SVG to a gtk pixbuf def svg_str_to_pixbuf(svg_string): - pl = GdkPixbuf.PixbufLoader('svg') + pl = gtk.gdk.PixbufLoader('svg') pl.write(svg_string) pl.close() pixbuf = pl.get_pixbuf() @@ -76,20 +76,21 @@ def svg_str_to_pixbuf(svg_string): ''' -import gi -from gi.repository import Gtk, GdkPixbuf, Gdk -from gi.repository import Pango, PangoCairo +import pygtk +pygtk.require('2.0') +import gtk +import pango +import pangocairo import cairo - class Sprites: ''' A class for the list of sprites and everything they share in common ''' def __init__(self, widget): ''' Initialize an empty array of sprites ''' - self.cr = None self.widget = widget self.list = [] + self.cr = None def set_cairo_context(self, cr): ''' Cairo context may be set or reset after __init__ ''' @@ -97,7 +98,7 @@ class Sprites: def get_sprite(self, i): ''' Return a sprint from the array ''' - if i < 0 or i > len(self.list)-1: + if i < 0 or i > len(self.list) - 1: return(None) else: return(self.list[i]) @@ -159,13 +160,11 @@ class Sprite: ''' Initialize an individual sprite ''' self._sprites = sprites self.save_xy = (x, y) # remember initial (x, y) position - self.rect = [int(x), int(y), 0, 0] + self.rect = gtk.gdk.Rectangle(int(x), int(y), 0, 0) self._scale = [12] self._rescale = [True] self._horiz_align = ["center"] self._vert_align = ["middle"] - self._x_pos = [None] - self._y_pos = [None] self._fd = None self._bold = False self._italic = False @@ -173,7 +172,7 @@ class Sprite: self._margins = [0, 0, 0, 0] self.layer = 100 self.labels = [] - self.images = [] + self.cached_surfaces = [] self._dx = [] # image offsets self._dy = [] self.type = None @@ -182,47 +181,54 @@ class Sprite: def set_image(self, image, i=0, dx=0, dy=0): ''' Add an image to the sprite. ''' - while len(self.images) < i + 1: - self.images.append(None) + while len(self.cached_surfaces) < i + 1: + self.cached_surfaces.append(None) self._dx.append(0) self._dy.append(0) - self.images[i] = image self._dx[i] = dx self._dy[i] = dy - if hasattr(self.images[i], 'get_width'): - w = self.images[i].get_width() - h = self.images[i].get_height() + if isinstance(image, gtk.gdk.Pixbuf): + w = image.get_width() + h = image.get_height() else: - w, h = self.images[i].get_size() + w, h = image.get_size() if i == 0: # Always reset width and height when base image changes. - self.rect[2] = w + dx - self.rect[3] = h + dy + self.rect.width = w + dx + self.rect.height = h + dy else: - if w + dx > self.rect[2]: - self.rect[2] = w + dx - if h + dy > self.rect[3]: - self.rect[3] = h + dy + if w + dx > self.rect.width: + self.rect.width = w + dx + if h + dy > self.rect.height: + self.rect.height = h + dy + surface = cairo.ImageSurface( + cairo.FORMAT_ARGB32, self.rect.width, self.rect.height) + context = cairo.Context(surface) + context = gtk.gdk.CairoContext(context) + context.set_source_pixbuf(image, 0, 0) + context.rectangle(0, 0, self.rect.width, self.rect.height) + context.fill() + self.cached_surfaces[i] = surface def move(self, pos): ''' Move to new (x, y) position ''' self.inval() - self.rect[0], self.rect[1] = int(pos[0]), int(pos[1]) + self.rect.x, self.rect.y = int(pos[0]), int(pos[1]) self.inval() def move_relative(self, pos): ''' Move to new (x+dx, y+dy) position ''' self.inval() - self.rect[0] += int(pos[0]) - self.rect[1] += int(pos[1]) + self.rect.x += int(pos[0]) + self.rect.y += int(pos[1]) self.inval() def get_xy(self): ''' Return current (x, y) position ''' - return (self.rect[0], self.rect[1]) + return (self.rect.x, self.rect.y) def get_dimensions(self): ''' Return current size ''' - return (self.rect[2], self.rect[3]) + return (self.rect.width, self.rect.height) def get_layer(self): ''' Return current layer ''' @@ -240,7 +246,7 @@ class Sprite: if layer is not None: self.layer = layer for i in range(self._sprites.length_of_list()): - if self.layer < self._sprites.get_sprite(i).layer: + if layer < self._sprites.get_sprite(i).layer: self._sprites.insert_in_list(self, i) self.inval() return @@ -273,12 +279,10 @@ class Sprite: self._rescale.append(self._rescale[0]) self._horiz_align.append(self._horiz_align[0]) self._vert_align.append(self._vert_align[0]) - self._x_pos.append(self._x_pos[0]) - self._y_pos.append(self._y_pos[0]) def set_font(self, font): ''' Set the font for a label ''' - self._fd = Pango.FontDescription(font) + self._fd = pango.FontDescription(font) def set_label_color(self, rgb): ''' Set the font color for a label ''' @@ -296,15 +300,13 @@ class Sprite: return def set_label_attributes(self, scale, rescale=True, horiz_align="center", - vert_align="middle", x_pos=None, y_pos=None, i=0): + vert_align="middle", i=0): ''' Set the various label attributes ''' self._extend_labels_array(i) self._scale[i] = scale self._rescale[i] = rescale self._horiz_align[i] = horiz_align self._vert_align[i] = vert_align - self._x_pos[i] = x_pos - self._y_pos[i] = y_pos def hide(self): ''' Hide a sprite ''' @@ -317,149 +319,136 @@ class Sprite: def inval(self): ''' Invalidate a region for gtk ''' - # self._sprites.window.invalidate_rect(self.rect, False) - self._sprites.widget.queue_draw_area(self.rect[0], - self.rect[1], - self.rect[2], - self.rect[3]) + self._sprites.widget.queue_draw_area(self.rect.x, + self.rect.y, + self.rect.width, + self.rect.height) def draw(self, cr=None): ''' Draw the sprite (and label) ''' if cr is None: - cr = self._sprites.cr - if cr is None: print 'sprite.draw: no Cairo context.' return - for i, img in enumerate(self.images): - if isinstance(img, GdkPixbuf.Pixbuf): - Gdk.cairo_set_source_pixbuf(cr, img, - self.rect[0] + self._dx[i], - self.rect[1] + self._dy[i]) - cr.rectangle(self.rect[0] + self._dx[i], - self.rect[1] + self._dy[i], - self.rect[2], - self.rect[3]) - cr.fill() - elif type(img) == cairo.ImageSurface: - cr.set_source_surface(img, self.rect[0] + self._dx[i], - self.rect[1] + self._dy[i]) - cr.rectangle(self.rect[0] + self._dx[i], - self.rect[1] + self._dy[i], - self.rect[2], - self.rect[3]) - cr.fill() - else: - print 'sprite.draw: source not a pixbuf (%s)' % (type(img)) + for i, surface in enumerate(self.cached_surfaces): + cr.set_source_surface(surface, + self.rect.x + self._dx[i], + self.rect.y + self._dy[i]) + cr.rectangle(self.rect.x + self._dx[i], + self.rect.y + self._dy[i], + self.rect.width, + self.rect.height) + cr.fill() if len(self.labels) > 0: self.draw_label(cr) def hit(self, pos): ''' Is (x, y) on top of the sprite? ''' x, y = pos - if x < self.rect[0]: + if x < self.rect.x: return False - if x > self.rect[0] + self.rect[2]: + if x > self.rect.x + self.rect.width: return False - if y < self.rect[1]: + if y < self.rect.y: return False - if y > self.rect[1] + self.rect[3]: + if y > self.rect.y + self.rect.height: return False return True def draw_label(self, cr): ''' Draw the label based on its attributes ''' - my_width = self.rect[2] - self._margins[0] - self._margins[2] + # Create a pangocairo context + cr = pangocairo.CairoContext(cr) + my_width = self.rect.width - self._margins[0] - self._margins[2] if my_width < 0: my_width = 0 - my_height = self.rect[3] - self._margins[1] - self._margins[3] + my_height = self.rect.height - self._margins[1] - self._margins[3] for i in range(len(self.labels)): - pl = PangoCairo.create_layout(cr) - pl.set_text(str(self.labels[i]), -1) - self._fd.set_size(int(self._scale[i] * Pango.SCALE)) + pl = cr.create_layout() + pl.set_text(str(self.labels[i])) + self._fd.set_size(int(self._scale[i] * pango.SCALE)) pl.set_font_description(self._fd) - w = pl.get_size()[0] / Pango.SCALE + w = pl.get_size()[0] / pango.SCALE if w > my_width: if self._rescale[i]: self._fd.set_size( - int(self._scale[i] * Pango.SCALE * my_width / w)) + int(self._scale[i] * pango.SCALE * my_width / w)) pl.set_font_description(self._fd) - w = pl.get_size()[0] / Pango.SCALE + w = pl.get_size()[0] / pango.SCALE else: j = len(self.labels[i]) - 1 while(w > my_width and j > 0): pl.set_text( - "…" + self.labels[i][len(self.labels[i]) - j:], -1) - self._fd.set_size(int(self._scale[i] * Pango.SCALE)) + "…" + self.labels[i][len(self.labels[i]) - j:]) + self._fd.set_size(int(self._scale[i] * pango.SCALE)) pl.set_font_description(self._fd) - w = pl.get_size()[0] / Pango.SCALE + w = pl.get_size()[0] / pango.SCALE j -= 1 - if self._x_pos[i] is not None: - x = int(self.rect[0] + self._x_pos[i]) - elif self._horiz_align[i] == "center": - x = int(self.rect[0] + self._margins[0] + (my_width - w) / 2) + if self._horiz_align[i] == "center": + x = int(self.rect.x + self._margins[0] + (my_width - w) / 2) elif self._horiz_align[i] == 'left': - x = int(self.rect[0] + self._margins[0]) + x = int(self.rect.x + self._margins[0]) else: # right - x = int(self.rect[0] + self.rect[2] - w - self._margins[2]) - h = pl.get_size()[1] / Pango.SCALE - if self._y_pos[i] is not None: - y = int(self.rect[1] + self._y_pos[i]) - elif self._vert_align[i] == "middle": - y = int(self.rect[1] + self._margins[1] + (my_height - h) / 2) + x = int(self.rect.x + self.rect.width - w - self._margins[2]) + h = pl.get_size()[1] / pango.SCALE + if self._vert_align[i] == "middle": + y = int(self.rect.y + self._margins[1] + (my_height - h) / 2) elif self._vert_align[i] == "top": - y = int(self.rect[1] + self._margins[1]) + y = int(self.rect.y + self._margins[1]) else: # bottom - y = int(self.rect[1] + self.rect[3] - h - self._margins[3]) + y = int(self.rect.y + self.rect.height - h - self._margins[3]) cr.save() cr.translate(x, y) cr.set_source_rgb(self._color[0], self._color[1], self._color[2]) - PangoCairo.update_layout(cr, pl) - PangoCairo.show_layout(cr, pl) + cr.update_layout(pl) + cr.show_layout(pl) cr.restore() - def label_width(self, cr=None): + def label_width(self): ''' Calculate the width of a label ''' - if cr is None: - cr = self._sprites.cr - max = 0 - for i in range(len(self.labels)): - pl = PangoCairo.create_layout(cr) - pl.set_text(str(self.labels[i]), -1) - self._fd.set_size(int(self._scale[i] * Pango.SCALE)) - pl.set_font_description(self._fd) - w = pl.get_size()[0] / Pango.SCALE - if w > max: - max = w - return max + cr = pangocairo.CairoContext(self._sprites.cr) + if cr is not None: + max = 0 + for i in range(len(self.labels)): + pl = cr.create_layout() + pl.set_text(self.labels[i]) + self._fd.set_size(int(self._scale[i] * pango.SCALE)) + pl.set_font_description(self._fd) + w = pl.get_size()[0] / pango.SCALE + if w > max: + max = w + return max + else: + return self.rect.width def label_safe_width(self): ''' Return maximum width for a label ''' - return self.rect[2] - self._margins[0] - self._margins[2] + return self.rect.width - self._margins[0] - self._margins[2] def label_safe_height(self): ''' Return maximum height for a label ''' - return self.rect[3] - self._margins[1] - self._margins[3] + return self.rect.height - self._margins[1] - self._margins[3] def label_left_top(self): ''' Return the upper-left corner of the label safe zone ''' return(self._margins[0], self._margins[1]) def get_pixel(self, pos, i=0): - ''' Return the pixl at (x, y) ''' - x, y = pos - x = x - self.rect[0] - y = y - self.rect[1] - if y > self.images[i].get_height() - 1: - return(-1, -1, -1, -1) - try: - array = self.images[i].get_pixels() - if array is not None: - offset = (y * self.images[i].get_width() + x) * 4 - r, g, b, a = ord(array[offset]), ord(array[offset + 1]),\ - ord(array[offset + 2]), ord(array[offset + 3]) - return(r, g, b, a) - else: - return(-1, -1, -1, -1) - except IndexError: - print "Index Error: %d %d" % (len(array), offset) + ''' Return the pixel at (x, y) ''' + x = int(pos[0] - self.rect.x) + y = int(pos[1] - self.rect.y) + if x < 0 or x > (self.rect.width - 1) or \ + y < 0 or y > (self.rect.height - 1): return(-1, -1, -1, -1) + + # create a new 1x1 cairo surface + cs = cairo.ImageSurface(cairo.FORMAT_RGB24, 1, 1); + cr = cairo.Context(cs) + cr.set_source_surface(self.cached_surfaces[i], -x, -y) + cr.rectangle(0,0,1,1) + cr.set_operator(cairo.OPERATOR_SOURCE) + cr.fill() + cs.flush() # ensure all writing is done + # Read the pixel + pixels = cs.get_data() + return (ord(pixels[2]), ord(pixels[1]), ord(pixels[0]), 0) + |