gui.py 文件源码

def mouse_callback(event, x, y, flags, param):
    global refPt, image, tiles, wall, selected_tile, l_mouse_button_down, mouse_over_tile,\
        clone, offsets

    if event == cv2.EVENT_LBUTTONDOWN:
        l_mouse_button_down = True
        refPt = [(x, y)]
        if not draw_tile:
            if find_hovered_tile(x,y):
                mouse_over_tile = True
                offsets = (x - selected_tile.wx - selected_tile.l, y-selected_tile.wy - selected_tile.t)
            else:
                mouse_over_tile = False

    elif event == cv2.EVENT_LBUTTONUP:
        l_mouse_button_down = False
        if draw_tile:
            #Restrict to create tiles that are at least 100 sqpixel big
            if (abs(refPt[0][0] - x) * abs(refPt[0][1] - y) >= 100):
                newTile = Tile(abs(refPt[0][0] - x), abs(refPt[0][1] - y))
                wall.add_tile(newTile, min(refPt[0][0], x), min(refPt[0][1], y))
                wall.draw(image)
                tiles.append(newTile)
        else:
            print("dragging the tile")

    elif event == cv2.EVENT_RBUTTONUP:
        if find_hovered_tile(x,y):
            tile_popup()

    elif event == cv2.EVENT_MOUSEMOVE:
        # TODO: Implement the t r b resize too
        if l_mouse_button_down and mouse_over_tile and x >= selected_tile.wx and x <= selected_tile.wx + 5:
            new_w = selected_tile.w + selected_tile.wx + selected_tile.l - x
            # TODO: Fix when the bezel is resized to the left
            print(
            "selected_tile.w = {} selected_tile.wx = {} x = {} new_w = {}".format(selected_tile.w, selected_tile.wx, x,
                                                                                  new_w))
            if new_w >= MINIMUM_RESIZE_WIDTH:
                selected_tile.w = new_w
                selected_tile.wx = x - selected_tile.l
                image = clone.copy()
                wall.draw(image)
                print("RESIZING")
        elif l_mouse_button_down and mouse_over_tile and not draw_tile:
            selected_tile.wx = x - offsets[0]
            selected_tile.wy = y - offsets[1]
            image = clone.copy()
            wall.draw(image)
        #TODO: Implement an else that will start drawing the tile while in the draw mode