Last active
July 4, 2022 21:39
-
-
Save benni12er/95a45eb168fc33a4fcd2d545af692dad to your computer and use it in GitHub Desktop.
Kivy image fit crop in frame/layout automatically
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| from kivy.graphics.context_instructions import Color | |
| from kivy.graphics.vertex_instructions import Rectangle | |
| from kivy.properties import StringProperty, Clock | |
| from kivy.uix.boxlayout import BoxLayout | |
| from kivy.uix.image import Image | |
| from kivy.uix.widget import Widget | |
| """ | |
| By Benedikt Zwölfer | |
| Example usage: | |
| BoxLayout: | |
| size_hint_y: None | |
| height: dp(200) | |
| orientation: 'vertical' | |
| FitImage: | |
| size_hint_y: 3 | |
| source: 'images/img1.jpg' | |
| FitImage: | |
| size_hint_y: 1 | |
| source: 'images/img2.jpg' | |
| Works with KivyMD | |
| """ | |
| class FitImage(BoxLayout): | |
| source = StringProperty() | |
| def __init__(self, **kwargs): | |
| super().__init__(**kwargs) | |
| Clock.schedule_once(self._late_init) | |
| def _late_init(self, *args): | |
| self.container = Container(self.source) | |
| self.add_widget(self.container) | |
| class Container(Widget): | |
| def __init__(self, source, **kwargs): | |
| super().__init__(**kwargs) | |
| self.bind(size=self.adjust_size) | |
| self.image = Image(source=source) | |
| def adjust_size(self, *args): | |
| (par_x, par_y) = self.parent.size | |
| if par_x == 0 or par_y == 0: | |
| with self.canvas: | |
| self.canvas.clear() | |
| return | |
| par_scale = par_x / par_y | |
| (img_x, img_y) = self.image.texture.size | |
| img_scale = img_x / img_y | |
| if par_scale > img_scale: | |
| (img_x_new, img_y_new) = (img_x, img_x / par_scale) | |
| else: | |
| (img_x_new, img_y_new) = (img_y * par_scale, img_y) | |
| crop_pos_x = (img_x - img_x_new) / 2 | |
| crop_pos_y = (img_y - img_y_new) / 2 | |
| subtexture = self.image.texture.get_region(crop_pos_x, crop_pos_y, img_x_new, img_y_new) | |
| with self.canvas: | |
| self.canvas.clear() | |
| Color(1, 1, 1) | |
| Rectangle(texture=subtexture, pos=self.pos, size=(par_x, par_y)) | |
Nobby89
commented
Apr 22, 2022
via email
Hi, thx for coming back to me.
I’m new to python and don’t know about any other method a of accessing files. I have searched.
Can you send me an example please?
Thx Bob
…Sent from my iPhone
On 21 Apr 2022, at 10:38, DGD ***@***.***> wrote:
***@***.*** commented on this gist.
Hello ! Why you use Image instead of AsyncImage widget ?
—
Reply to this email directly, view it on GitHub, or unsubscribe.
You are receiving this because you commented.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment