コード例 #1
0
ファイル: toolbar_buttons.py プロジェクト: brycehendrix/chaco
class ToolbarButton(Button):
    image = Str()
    _image = Instance(Image)

    color = 'black'

    width = Property(Int, depends_on='label, image')
    height = Property(Int, depends_on='label, image')

    # bounds are used for hit testing
    bounds = Property(List, depends_on='label, image')

    def __init__(self, *args, **kw):
        super(ToolbarButton, self).__init__(*args, **kw)

        image_resource = ImageResource(self.image)
        self._image = Image(image_resource.absolute_path)

    @cached_property
    def _get_width(self):
        gc = PlotGraphicsContext((100,100), dpi=72)
        gc.set_font(self.label_font)
        (w, h, descent, leading) = gc.get_full_text_extent(self.label)
        return max(self._image.width(), w)

    @cached_property
    def _get_height(self):
        gc = PlotGraphicsContext((100,100), dpi=72)
        gc.set_font(self.label_font)
        (w, h, descent, leading) = gc.get_full_text_extent(self.label)
        return self._image.height() + h

    @cached_property
    def _get_bounds(self):
        return [self.width, self.height]

    def _draw_actual_button(self, gc):
        x_offset = self.x + (self.width - self._image.width())/2
        gc.draw_image(self._image,
                      (x_offset, self.y+2, self._image.width(), self._image.height()))

        if self.label is not None and len(self.label) > 0:
            gc.set_font(self.label_font)

            (w, h, descent, leading) = gc.get_full_text_extent(self.label)
            if w < self.width:
                x_offset = self.x + (self.width - w)/2
            else:
                x_offset = self.x

            gc.set_text_position(x_offset, self.y-8)
            gc.show_text(self.label)
コード例 #2
0
ファイル: image_data.py プロジェクト: brycehendrix/chaco
    def fromfile(cls, filename):
        """ Alternate constructor to create an ImageData from an image file
        on disk. 'filename' may be a file path or a file object.
        """

        from enthought.kiva.image import Image
        img = Image(filename)
        imgdata = cls(data=img.bmp_array, transposed=False)
        fmt = img.format()

        if fmt == "rgb24":
            imgdata.value_depth = 3
        elif fmt == "rgba32":
            imgdata.value_depth = 4
        else:
            raise ValueError("Unknown image format in file %s: %s" %
                             (filename, fmt))
        return imgdata
コード例 #3
0
ファイル: toolbar_buttons.py プロジェクト: brycehendrix/chaco
    def __init__(self, *args, **kw):
        super(ToolbarButton, self).__init__(*args, **kw)

        image_resource = ImageResource(self.image)
        self._image = Image(image_resource.absolute_path)