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Diffstat (limited to 'library/pippy/gasp/api.py')
| -rw-r--r-- | library/pippy/gasp/api.py | 534 |
1 files changed, 534 insertions, 0 deletions
diff --git a/library/pippy/gasp/api.py b/library/pippy/gasp/api.py new file mode 100644 index 0000000..9a88ce7 --- /dev/null +++ b/library/pippy/gasp/api.py @@ -0,0 +1,534 @@ +import backend +import math +import random +import time + +# diffrent update_when values +NOTHING = "Nothing" +MOUSE_PRESSED = "Mouse_Pressed" +KEY_PRESSED = "Key_Pressed" + +#============================ SCREEN FUNCTIONS ============================== + +class Screen: + """ + Defines the graphics window in which objects can be created + """ + def __init__(self, width, height, + title="Gasp", background=(255,255,255), back_end=None): + global backend + backend = back_end + self.width = width + self.height = height + self.title = title + self.background = backend.color_convert(background) + + # backend.check_screen_atts(self) # checks the variables + backend.create_screen(self) + + + +def begin_graphics(width=-1, height=-1, title="Gasp", + background=(255,255,255), back_end=backend): + """ + Initialize a graphics window in GASP + """ + global screen + screen = Screen(width, height, title, background, back_end) + +def end_graphics(): + """ + Close the graphics window + """ + backend.end() + +def clear_screen(): + """ + Removes all objects from the graphics window + """ + backend.clear_screen() + + +def remove_from_screen(obj): + """ + Removes a specified object from the graphics window + """ + backend.remove(obj) + +#================================ Point ===================================== + +class Point: + """ + Creates a point object with an x and y attribute + """ + def __init__(self, *args): + if len(args) == 1: + self.x, self.y = args[0] + else: + self.x, self.y = args + + def __str__(self): + return "A Point instance at (%i, %i) \n" %(self.x, self.y) + + def distance(self, other): + ''' The distance between two points ''' + return math.sqrt(float((other.x - self.x))**2 + + (float(other.y - self.y))**2) + + +def make_it_a_point(point): + """ + Takes something and makes it into a point if it isn't one already + """ + if isinstance(point, Point): + return point + else: + return Point(point) + + + +class Shape: + def __init__(self, center, filled=False, color=(0,0,0), thickness=1): + self.center = make_it_a_point(center) + self.filled = filled + self.color = backend.color_convert(color) + self.thickness = thickness + self.rot = 0 + self.key = time.time()*random.random() + + def move_by(self,x,y): + if self.on_screen: + self.topleft = (self.topleft[0]+x,self.topleft[1]+y) + self.center = Point(self.center.x+x,self.center.y+y) + else: move_by(self,x,y) + + def move_to(self,pos): + if self.on_screen: + x,y = pos[0]-self.center.x,pos[1]-self.center.y + self.topleft = (self.topleft[0]+x,self.topleft[1]+y) + self.center = Point(self.center.x+x,self.center.y+y) + else: move_to(self,pos) + + def draw(self,context): + context.save() + x,y = backend.flip_coords(self.topleft) + context.translate(x,y-self.surface.get_height()) + if self.rot != 0: + context.translate(self.surface.get_width()/2,self.surface.get_height()/2) + context.rotate(self.rot) + context.translate(-1*self.surface.get_width()/2,-1*self.surface.get_height()/2) + context.set_source_surface(self.surface) + context.paint() + context.restore() + +class Plot(Shape): + """ + Allows screen objects to be placed in the graphics window + """ + def __init__(self, pos, color=(0,0,0), size=1): + self.center = make_it_a_point(pos) + self.color = color + self.size = size + self.key = time.time()*random.random() + self.on_screen = False + screen.action_objects.put([["plot",self],"new object"]) + + +class Line(Shape): + """ + Allows the creation of lines in the graphics window + """ + def __init__(self, start, end, color=(0,0,0),thickness=1): + self.start = make_it_a_point(start) + self.end = make_it_a_point(end) + self.center = make_it_a_point(((start[0]+end[0])/2,(start[1]+end[1])/2)) + self.color = backend.color_convert(color) + self.thickness=thickness + self.key = time.time()*random.random() + self.on_screen = False + screen.action_objects.put([["line",self],"new object"]) + + def move_by(self,x,y): + if self.on_screen: + self.topleft = (self.topleft[0]+x,self.topleft[1]+y) + self.center = Point(self.center.x+x,self.center.y+y) + else: move_by(self,x,y) + + def move_to(self,pos): + if self.on_screen: + x,y = pos[0]-self.center.x,pos[1]-self.center.y + self.topleft = (self.topleft[0]+x,self.topleft[1]+y) + self.center = Point(self.center.x+x,self.center.y+y) + else: move_to(self,pos) + + def __repr__(self): + return "A Line instance from (%d, %d) to (%d, %d)" % \ + (self.start.x, self.start.y, self.end.x, self.end.y) + +class Box(Shape): + """ + Allows the creation of squares and rectangles in the graphics window + """ + def __init__(self, lower_left_corner, width, height, + filled=False, color=(0,0,0), thickness=1): + self.center = Point((int(lower_left_corner[0] + width/2.0), + int(lower_left_corner[1] + height/2.0))) + self.height = height + self.width = width + self.on_screen = False + Shape.__init__(self, self.center, filled, color, thickness) + screen.action_objects.put([["box",self],"new object"]) + + def move_to(self,pos): + if self.on_screen: + x,y = pos[0]-self.topleft[0],pos[1]-self.topleft[1] + self.topleft = (self.topleft[0]+x,self.topleft[1]+y) + self.center = Point(self.center.x+x,self.center.y+y) + else: + move_to(self,pos) + + def __repr__(self): + return "Box instance at (%d, %d) with width %d and height %d" % \ + (self.center.x, self.center.y, self.width, self.height) + +class Polygon(Shape): + """ + Allows the creation of polygons in the graphics window + """ + def __init__(self, points, filled=False, color=(0,0,0),thickness=1): + self.thickness = thickness + self.points = points + x_values = [] + y_values = [] + for point in self.points: + x_values.append(point[0]) + y_values.append(point[1]) + self.height = (max(y_values) - min(y_values))+self.thickness*2 + self.width = (max(x_values) - min(x_values))+self.thickness*2 + self.topleft = (min(x_values)-self.thickness, min(y_values)-self.thickness) + self.center = Point(self.width/2 + min(x_values), self.height/2 + + min(y_values)) + self.on_screen = False + Shape.__init__(self, self.center, filled, color) + screen.action_objects.put([["polygon",self],"new object"]) + + def __repr__(self): + return "Polygon instance at (%i, %i) with the points:\n %t" % \ + (self.center.x , self.center.y, self.points) + +class Circle(Shape): + """ + Allows the creation of circles in the graphics window + """ + def __init__(self, center, radius, + filled=False, color=(0,0,0), thickness=1): + Shape.__init__(self, center, filled, color, thickness) + self.radius = radius + self.on_screen = False + screen.action_objects.put([["circle",self],"new object"]) + #backend.create_circle(self) + + def __repr__(self): + return "Circle instance at (%d, %d) with radius %d" % \ + (self.center.x, self.center.y, self.radius) + +class Arc(Shape): + """ + Allows the creation of arcs in the graphics window + """ + def __init__(self, center, radius, start_angle, end_angle, + filled=False, color=(0,0,0), thickness=1): + Shape.__init__(self, center, filled, color, thickness) + self.radius = radius + self.start_angle = 360-start_angle + self.end_angle = 360-end_angle + self.on_screen = False + screen.action_objects.put([["arc",self],"new object"]) + + def __repr__(self): + return "Arc instance at (%d, %d) with start angle %d and end angle %d" \ + % (self.center.x, self.center.y, self.start_angle, self.end_angle) + + + +class Oval(Shape): + """ + Allows the creation of circles in the graphics window + """ + def __init__(self, center, width, height, + filled=False, color=(0,0,0), thickness=1): + Shape.__init__(self, center, filled, color, thickness) + self.width = width + self.height = height + self.on_screen = False + screen.action_objects.put([["oval",self],"new object"]) + + def __repr__(self): + return "Oval instance at (%d, %d) with width %d and height %d" % \ + (self.center.x, self.center.y, self.width, self.height) + +class Image(Shape): + """ + Allows the placing of images in the graphics window + """ + def __init__(self, file_path, center, width=0, height=0): + self.path_name = file_path + self.center = Point(backend.flip_coords(center)) + self.width = width + self.height = height + self.key = time.time()*random.random() + self.on_screen = False + screen.action_objects.put([["image",self],"new object"]) + + def draw(self,context): + context.save() + context.translate(*self.topleft) + context.translate(self.width/2,self.height/2) + context.rotate(self.rot) + context.translate(-1*self.width/2,-1*self.height/2) + context.save() + context.scale(self.scale[0],self.scale[1]) + context.set_source_pixbuf(self.pixbuf,0,0) + context.paint() + context.restore() + context.restore() + + def move_by(self,x,y): + if self.on_screen: + self.topleft = (self.topleft[0]+x,self.topleft[1]-y) + self.center = Point(self.center.x+x,self.center.y-y) + else: + move_by(self,x,y) + + def move_to(self,pos): + if self.on_screen: + x,y = pos[0]-self.center.x,pos[1]-self.center.y + self.topleft = (self.topleft[0]+x,self.topleft[1]-y) + self.center = Point(self.center.x+x,self.center.y-y) + else: + move_to(self,pos) + + def __repr__(self): + return "Image instance at (%i, %i) from the file %s" % \ + (self.center.x, self.center.y, self.path_name) + + +def move_to(obj, pos): + """ + Moves a screen object to a specified location + """ + screen.action_objects.put([obj,"move_to",pos]) + + +def move_by(obj, dx, dy): + """ + Moves a screen object by specified X and Y amounts + """ + screen.action_objects.put([obj,"move_by",(dx,dy)]) + +def get_text_length(text): + return backend.get_text_length(text) + + +def rotate_to(obj, angle): + """ + Rotates a screen object to a specified angle + """ + screen.action_objects.put([obj,"rotate_to",math.radians(angle)]) + + +def rotate_by(obj, angle): + """ + Rotates a screen object by a specified angle + """ + screen.action_objects.put([obj,"rotate_by",math.radians(angle)]) + + +# =============================== Text ====================================== + +class Text(Shape): + """ + Allows the creation of text in the graphics window + """ + def __init__(self, text, pos, color=(0,0,0), size=12): + self.text = text + self.color = backend.color_convert(color) + self.size = size + self.pos = backend.flip_coords(pos) + self.key = time.time()*random.random() + self.on_screen = False + screen.action_objects.put([["text",self],"new object"]) + #screen.action_objects.put(obj) + #screen.objects.append(obj) + + def draw(self, context): + context.save() + context.move_to(*self.pos) + if self.rot != 0: + context.rotate(self.rot) + context.set_source_rgb(*self.color) + context.set_font_size(self.size) + context.show_text(self.text) + context.restore() + + + def move_to(self,pos): + self.pos = backend.flip_coords(pos) + move_to(self,pos) + + def move_by(self,dx,dy): + self.pos = (self.pos[0]+dx,self.pos[1]-dy) + move_by(self,dx,dy) + +# ============================ Text Entry ================================== + +def Text_Entry(message="Enter Text:", pos=(0,0), color=(0,0,0), size=12): + entry = backend.Entry(message,pos,color,size) + return entry.entry + + +"""# =============================== Sound ===================================== + +class Sound: + "" + Allows the creation and playback of sounds + "" + def __init__(self, file_path): + self.path = file_path + self.filename = ''.join(file_path.split('.')[:-1]).split('/')[-1] + + def play(self): + backend.play_sound(self) + + def stop(self): + backend.stop_sound(self) + + +def create_sound(file_path): + "" + Creates a sound object from a file + "" + return Sound(file_path) + + +def play_sound(sound): + "" + Starts to play a specified sound object + "" + sound.play() + + +def stop_sound(sound): + "" + Stops the playback of a specified sound object + "" + sound.stop()""" + +# =========================== Event Functions ============================== + +def mouse_position(): + """ + Returns a Point() at the mouse's current position + """ + pos = backend.mouse_pos() + return backend.flip_coords((int(pos[0]),int(pos[1]))) + + +def mouse_buttons(): + """ + Returns a dictionary of the current state of the mouse buttons + """ + return backend.mouse_state() + + +def keys_pressed(): + """ + Returns a list of all of the keys being pressed + """ + return backend.keys() + +def key_pressed(key): + return key in backend.keys() + +def screen_size(): + return backend.get_screen_size() + +# ============================= GASP TOOLS ================================== + +def screen_shot(filename="screen_shot"): + """ + Saves a screenshot to a specified file name + """ + backend.screen_picture(filename) + +def random_between(num1, num2): + if (num1 == num2): + return num1 + elif (num1 > num2): + return random.randint(num2, num1) + else: + return random.randint(num1, num2) + +read_string = raw_input + + +def read_number(prompt='Please enter a number: '): + """ + Prompts the user to enter a number + """ + while True: + try: + result = eval(raw_input(prompt)) + if isinstance(result, (float, int)): + return result + print "But that wasn't a number!" + except: + print "But that wasn't a number!" + + +def read_yesorno(prompt='Yes or no? '): + """ + Asks the user to enter yes or no + """ + while True: + result = raw_input(prompt) + result = result.lower() + if result=='yes' or result=='y': return True + if result=='no' or result=='n': return False + print "Please answer yes or no." + +# =============================== Time ===================================== + +def set_speed(speed): + """ + Sets program frame rate in frames per second + """ + backend.set_frame_rate(speed) + + +def update_when(event_type): + """ + Event Types include + 'key_pressed' + 'mouse_clicked' + 'next_tick' + """ + if event_type == "key_pressed": + return backend.update_when(event_type) + else: backend.update_when(event_type) + +def sleep(duration): + """ + Sleeps for a length of time + """ + backend.sleep(duration) + + +# ============================== main ===================================== + +if __name__ == "__main__": + """ + If api.py is run independently, this runs the test suite + """ + import doctest + doctest.testmod() |