mirror of
https://github.com/eliasstepanik/imgui-rs.git
synced 2026-01-11 21:48:36 +00:00
Add DrawListMut::add_image and friends
This commit is contained in:
dbr
parent
56d95395e7
commit
00d8180671
@ -79,7 +79,7 @@ impl CustomTexturesApp {
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fn show_textures(&self, ui: &Ui) {
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Window::new(im_str!("Hello textures"))
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.size([400.0, 600.0], Condition::FirstUseEver)
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.size([400.0, 400.0], Condition::FirstUseEver)
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.build(ui, || {
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ui.text(im_str!("Hello textures!"));
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if let Some(my_texture_id) = self.my_texture_id {
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@ -91,6 +91,89 @@ impl CustomTexturesApp {
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ui.text("Say hello to Lenna.jpg");
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lenna.show(ui);
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}
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// Example of using custom textures on a button
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if let Some(lenna) = &self.lenna {
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ui.text("The Lenna buttons");
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{
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let _is_clicked =
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ui.invisible_button(im_str!("Boring Button"), [100.0, 100.0]);
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// See also `imgui::Ui::style_color`
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let tint_none = [1.0, 1.0, 1.0, 1.0];
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let tint_green = [0.5, 1.0, 0.5, 1.0];
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let tint_red = [1.0, 0.5, 0.5, 1.0];
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let tint = match (
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ui.is_item_hovered(),
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ui.is_mouse_down(imgui::MouseButton::Left),
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) {
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(false, false) => tint_none,
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(false, true) => tint_none,
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(true, false) => tint_green,
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(true, true) => tint_red,
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};
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let draw_list = ui.get_window_draw_list();
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draw_list
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.add_image(lenna.texture_id, ui.item_rect_min(), ui.item_rect_max())
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.col(tint)
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.build();
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}
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{
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ui.same_line(0.0);
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// Button using quad positioned image
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let is_clicked =
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ui.invisible_button(im_str!("Exciting Button"), [100.0, 100.0]);
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// Button bounds
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let min = ui.item_rect_min();
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let max = ui.item_rect_max();
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// get corner coordinates
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let tl = [
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min[0],
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min[1] + (ui.frame_count() as f32 / 10.0).cos() * 10.0,
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];
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let tr = [
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max[0],
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min[1] + (ui.frame_count() as f32 / 10.0).sin() * 10.0,
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];
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let bl = [min[0], max[1]];
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let br = max;
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let draw_list = ui.get_window_draw_list();
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draw_list
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.add_image_quad(lenna.texture_id, tl, tr, br, bl)
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.build();
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}
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// Rounded image
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{
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ui.same_line(0.0);
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let is_clicked =
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ui.invisible_button(im_str!("Smooth Button"), [100.0, 100.0]);
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let draw_list = ui.get_window_draw_list();
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draw_list
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.add_image_rounded(
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lenna.texture_id,
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ui.item_rect_min(),
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ui.item_rect_max(),
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16.0,
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)
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// Tint brighter for visiblity of corners
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.col([2.0, 0.5, 0.5, 1.0])
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// Rounding on each corner can be changed separately
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.round_top_left((ui.frame_count()+0) / 60 % 4 == 0)
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.round_top_right((ui.frame_count()+1) / 60 % 4 == 1)
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.round_bot_right((ui.frame_count()+3) / 60 % 4 == 2)
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.round_bot_left((ui.frame_count()+2) / 60 % 4 == 3)
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.build();
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}
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}
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});
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}
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}
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@ -3,6 +3,7 @@ use sys::ImDrawList;
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use super::Ui;
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use crate::legacy::ImDrawCornerFlags;
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use crate::render::renderer::TextureId;
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use std::marker::PhantomData;
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@ -251,6 +252,66 @@ impl<'ui> DrawListMut<'ui> {
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}
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}
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/// # Images
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impl<'ui> DrawListMut<'ui> {
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/// Draw the specified image in the rect specified by `p_min` to
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/// `p_max`.
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///
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/// # Examples
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///
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/// ```
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/// # use imgui::*;
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/// fn custom_button(ui: &Ui, img_id: TextureId) {
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/// // Tint image red
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///
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/// // Invisible button is good widget to customise with custom image
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/// ui.invisible_button(im_str!("custom_button"), [100.0, 20.0]);
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///
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/// // Red tint when button is hovered, no tint otherwise
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/// let overlay_color = if ui.is_item_hovered() {
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/// [1.0, 0.6, 0.6, 1.0]
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/// } else {
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/// [1.0, 1.0, 1.0, 1.0]
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/// };
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///
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/// // Get draw list and draw image over invisible button
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/// let draw_list = ui.get_window_draw_list();
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/// draw_list
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/// .add_image(img_id, ui.item_rect_min(), ui.item_rect_max())
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/// .col(overlay_color)
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/// .build();
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/// }
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/// ```
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pub fn add_image(&'ui self, texture_id: TextureId, p_min: [f32; 2], p_max: [f32; 2]) -> Image {
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Image::new(self, texture_id, p_min, p_max)
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}
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/// Draw the specified image to a quad with the specified
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/// coordinates. Similar to [`DrawListMut::add_image`] but this
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/// method is able to draw non-rectangle images.
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pub fn add_image_quad(
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&'ui self,
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texture_id: TextureId,
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p1: [f32; 2],
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p2: [f32; 2],
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p3: [f32; 2],
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p4: [f32; 2],
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) -> ImageQuad {
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ImageQuad::new(self, texture_id, p1, p2, p3, p4)
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}
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/// Draw the speciied image, with rounded corners
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pub fn add_image_rounded(
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&'ui self,
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texture_id: TextureId,
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p_min: [f32; 2],
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p_max: [f32; 2],
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rounding: f32,
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) -> ImageRounded {
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ImageRounded::new(self, texture_id, p_min, p_max, rounding)
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}
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}
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/// Represents a line about to be drawn
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#[must_use = "should call .build() to draw the object"]
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pub struct Line<'ui> {
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@ -605,3 +666,265 @@ impl<'ui> BezierCurve<'ui> {
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}
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}
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}
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/// Represents a image about to be drawn
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#[must_use = "should call .build() to draw the object"]
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pub struct Image<'ui> {
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texture_id: TextureId,
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p_min: [f32; 2],
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p_max: [f32; 2],
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uv_min: [f32; 2],
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uv_max: [f32; 2],
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col: ImColor32,
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draw_list: &'ui DrawListMut<'ui>,
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}
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impl<'ui> Image<'ui> {
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fn new(
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draw_list: &'ui DrawListMut,
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texture_id: TextureId,
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p_min: [f32; 2],
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p_max: [f32; 2],
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) -> Self {
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Self {
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texture_id,
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p_min,
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p_max,
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uv_min: [0.0, 0.0],
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uv_max: [1.0, 1.0],
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col: [1.0, 1.0, 1.0, 1.0].into(),
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draw_list,
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}
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}
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/// Set uv_min (default `[0.0, 0.0]`)
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pub fn uv_min(mut self, uv_min: [f32; 2]) -> Self {
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self.uv_min = uv_min;
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self
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}
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/// Set uv_max (default `[1.0, 1.0]`)
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pub fn uv_max(mut self, uv_max: [f32; 2]) -> Self {
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self.uv_max = uv_max;
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self
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}
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/// Set color tint (default: no tint/white `[1.0, 1.0, 1.0, 1.0]`)
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pub fn col<C>(mut self, col: C) -> Self
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where
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C: Into<ImColor32>,
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{
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self.col = col.into();
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self
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}
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/// Draw the image on the window.
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pub fn build(self) {
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use std::os::raw::c_void;
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unsafe {
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sys::ImDrawList_AddImage(
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self.draw_list.draw_list,
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self.texture_id.id() as *mut c_void,
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self.p_min.into(),
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self.p_max.into(),
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self.uv_min.into(),
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self.uv_max.into(),
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self.col.into(),
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);
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}
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}
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}
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/// Represents a image about to be drawn
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#[must_use = "should call .build() to draw the object"]
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pub struct ImageQuad<'ui> {
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texture_id: TextureId,
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p1: [f32; 2],
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p2: [f32; 2],
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p3: [f32; 2],
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p4: [f32; 2],
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uv1: [f32; 2],
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uv2: [f32; 2],
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uv3: [f32; 2],
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uv4: [f32; 2],
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col: ImColor32,
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draw_list: &'ui DrawListMut<'ui>,
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}
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impl<'ui> ImageQuad<'ui> {
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fn new(
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draw_list: &'ui DrawListMut,
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texture_id: TextureId,
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p1: [f32; 2],
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p2: [f32; 2],
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p3: [f32; 2],
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p4: [f32; 2],
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) -> Self {
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Self {
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texture_id,
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p1,
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p2,
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p3,
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p4,
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uv1: [0.0, 0.0],
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uv2: [1.0, 0.0],
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uv3: [1.0, 1.0],
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uv4: [0.0, 1.0],
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col: [1.0, 1.0, 1.0, 1.0].into(),
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draw_list,
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}
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}
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/// Set uv coordinates of each point of the quad. If not called, defaults are:
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///
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/// ```
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/// uv1: [0, 0],
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/// uv2: [1, 0],
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/// uv3: [1, 1],
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/// uv4: [0, 1],
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/// ```
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pub fn uv(mut self, uv1: [f32; 2], uv2: [f32; 2], uv3: [f32; 2], uv4: [f32; 2]) -> Self {
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self.uv1 = uv1;
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self.uv2 = uv2;
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self.uv3 = uv3;
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self.uv4 = uv4;
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self
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}
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/// Set color tint (default: no tint/white `[1.0, 1.0, 1.0, 1.0]`)
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pub fn col<C>(mut self, col: C) -> Self
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where
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C: Into<ImColor32>,
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{
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self.col = col.into();
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self
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}
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/// Draw the image on the window.
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pub fn build(self) {
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use std::os::raw::c_void;
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unsafe {
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sys::ImDrawList_AddImageQuad(
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self.draw_list.draw_list,
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self.texture_id.id() as *mut c_void,
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self.p1.into(),
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self.p2.into(),
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self.p3.into(),
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self.p4.into(),
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self.uv1.into(),
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self.uv2.into(),
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self.uv3.into(),
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self.uv4.into(),
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self.col.into(),
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);
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}
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}
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}
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/// Represents a image about to be drawn
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#[must_use = "should call .build() to draw the object"]
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pub struct ImageRounded<'ui> {
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texture_id: TextureId,
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p_min: [f32; 2],
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p_max: [f32; 2],
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uv_min: [f32; 2],
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uv_max: [f32; 2],
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col: ImColor32,
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rounding: f32,
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rounding_corners: ImDrawCornerFlags,
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draw_list: &'ui DrawListMut<'ui>,
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}
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impl<'ui> ImageRounded<'ui> {
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fn new(
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draw_list: &'ui DrawListMut,
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texture_id: TextureId,
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p_min: [f32; 2],
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p_max: [f32; 2],
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rounding: f32,
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) -> Self {
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Self {
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texture_id,
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p_min,
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p_max,
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uv_min: [0.0, 0.0],
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uv_max: [1.0, 1.0],
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col: [1.0, 1.0, 1.0, 1.0].into(),
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rounding,
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rounding_corners: ImDrawCornerFlags::All,
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draw_list,
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}
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}
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/// Set uv_min (default `[0.0, 0.0]`)
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pub fn uv_min(mut self, uv_min: [f32; 2]) -> Self {
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self.uv_min = uv_min;
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self
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}
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/// Set uv_max (default `[1.0, 1.0]`)
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pub fn uv_max(mut self, uv_max: [f32; 2]) -> Self {
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self.uv_max = uv_max;
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self
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}
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/// Set color tint (default: no tint/white `[1.0, 1.0, 1.0, 1.0]`)
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pub fn col<C>(mut self, col: C) -> Self
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where
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C: Into<ImColor32>,
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{
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self.col = col.into();
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self
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}
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/// Set flag to indicate rounding on all all corners.
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pub fn round_all(mut self, value: bool) -> Self {
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self.rounding_corners.set(ImDrawCornerFlags::All, value);
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self
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}
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/// Set flag to indicate if image's top-left corner will be rounded.
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pub fn round_top_left(mut self, value: bool) -> Self {
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self.rounding_corners.set(ImDrawCornerFlags::TopLeft, value);
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self
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}
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/// Set flag to indicate if image's top-right corner will be rounded.
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pub fn round_top_right(mut self, value: bool) -> Self {
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self.rounding_corners
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.set(ImDrawCornerFlags::TopRight, value);
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self
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}
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/// Set flag to indicate if image's bottom-left corner will be rounded.
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pub fn round_bot_left(mut self, value: bool) -> Self {
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self.rounding_corners.set(ImDrawCornerFlags::BotLeft, value);
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self
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}
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/// Set flag to indicate if image's bottom-right corner will be rounded.
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pub fn round_bot_right(mut self, value: bool) -> Self {
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self.rounding_corners
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.set(ImDrawCornerFlags::BotRight, value);
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self
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}
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/// Draw the image on the window.
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pub fn build(self) {
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use std::os::raw::c_void;
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unsafe {
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sys::ImDrawList_AddImageRounded(
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self.draw_list.draw_list,
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self.texture_id.id() as *mut c_void,
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self.p_min.into(),
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self.p_max.into(),
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self.uv_min.into(),
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self.uv_max.into(),
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self.col.into(),
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self.rounding.into(),
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self.rounding_corners.bits(),
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);
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}
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}
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}
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