1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

// Image Widget
// Draws an image in a specified bounding area.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use piston_window::*;

use crate::core::callbacks::*;
use crate::core::point::*;
use crate::widget::config::*;
use crate::widget::widget::*;

/// This is the `ImageWidget`, which draws an image on the screen.
pub struct ImageWidget {
    config: Configurable,
    callbacks: CallbackStore,
    image: G2dTexture,
    image_size: crate::core::point::Size,
}

/// Implementation of the constructor for the `ImageWidget`.  Creates a new image object to be
/// displayed on the screen, given the image filename.
impl ImageWidget {
    /// Creates a new `TextWidget` object, requiring the current `PistonWindow`'s factory object
    /// (which can be cloned), the name of the font (filename in the `assets` directory), the
    /// text to display, and the font size in which to use.
    pub fn new(factory: &mut GfxFactory, image_name: String) -> Self {
        let assets = find_folder::Search::ParentsThenKids(3, 3)
            .for_folder("assets")
            .unwrap();
        let texture = Texture::from_path(
            factory,
            &assets.join(image_name),
            Flip::None,
            &TextureSettings::new(),
        )
        .unwrap();

        Self {
            config: Configurable::new(),
            callbacks: CallbackStore::new(),
            image: texture.clone(),
            image_size: crate::core::point::Size {
                w: texture.clone().get_size().0 as i32,
                h: texture.clone().get_size().1 as i32,
            },
        }
    }
}

/// Implementation of the `BoxWidget` object with the `Widget` traits implemented.
/// This implementation is similar to the `CanvasWidget`, but incorporates a drawable box inside
/// the widget.  Base widget is the `CanvasWidget`.
///
/// This is basically just a box with a fill color.  Use this to draw other things like buttons,
/// text widgets, and so on, if you need anything with a drawable border.
///
/// Example usage:
/// ```no_run
/// # use piston_window::*;
/// # use pushrod::core::point::*;
/// # use pushrod::core::main::*;
/// # use pushrod::widget::widget::*;
/// # use pushrod::widget::text_widget::*;
/// # fn main() {
/// let mut window: PistonWindow = WindowSettings::new("Pushrod Window", [800, 600])
///       .opengl(OpenGL::V3_2)
///       .resizable(false)
///       .build()
///       .unwrap_or_else(|error| panic!("Failed to build PistonWindow: {}", error));
///    let factory: GfxFactory = window.factory.clone();
///    let mut prod: Pushrod = Pushrod::new(window);
///    let mut text_widget = TextWidget::new(
///       factory,
///       "OpenSans-Regular.ttf".to_string(),
///       "Welcome to Pushrod!".to_string(),
///       32,
///    );
///
///    text_widget.set_origin(8, 8);
///    text_widget.set_size(400, 40);
///    text_widget.set_color([0.75, 0.75, 1.0, 1.0]);
///    text_widget.set_text_color([0.0, 0.0, 1.0, 1.0]);
///    prod.widget_store.add_widget(Box::new(text_widget));
/// # }
/// ```
impl Widget for ImageWidget {
    fn config(&mut self) -> &mut Configurable {
        &mut self.config
    }

    fn callbacks(&mut self) -> &mut CallbackStore {
        &mut self.callbacks
    }

    /// Draws the contents of the widget.
    fn draw(&mut self, c: Context, g: &mut G2d) {
        clear(self.get_color(), g);

        let origin = self.get_origin();
        let size = self.get_size();
        let scale_w = (size.w as f64 / self.image_size.w as f64);
        let scale_h = (size.h as f64 / self.image_size.h as f64);
        let transform = c.transform.scale(scale_w, scale_h);
        let (clip_x, clip_y, clip_w, clip_h) = (0 as u32, 0 as u32, size.w as u32, size.h as u32);
        let clipped = c.draw_state.scissor([clip_x, clip_y, clip_w, clip_h]);

        image(&self.image, transform, g);

        //        let transform = c.transform.trans((origin.x * 2) as f64, (origin.y * 2) as f64).scale(0.50, 0.50);
        //
        //        // Compute clip rectangle from upper left corner.
        //        let (clip_x, clip_y, clip_w, clip_h) = ((origin.x * 2) as u32, (origin.y * 2) as u32, (size.w * 2) as u32, (size.h * 2) as u32);
        //        let clipped = c.draw_state.scissor([clip_x, clip_y, clip_w, clip_h]);
        //
        //        Image::new().draw(&self.image, &clipped, transform, g);

        // Then clear invalidation.
        self.clear_invalidate();
    }
}