From 8557c24d48833ca0493a4f2a6181feb96bf9e1a7 Mon Sep 17 00:00:00 2001
From: gered <gered@blarg.ca>
Date: Tue, 30 May 2023 18:51:29 -0400
Subject: [PATCH] add image_region ui widget which allows specifying a texture
 sub-region

---
 ggdt_imgui/src/lib.rs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/ggdt_imgui/src/lib.rs b/ggdt_imgui/src/lib.rs
index 72fac32..c1dd5da 100644
--- a/ggdt_imgui/src/lib.rs
+++ b/ggdt_imgui/src/lib.rs
@@ -73,6 +73,8 @@ pub trait UiSupport {
 	fn is_any_hovered(&self) -> bool;
 	fn is_any_focused(&self) -> bool;
 	fn image(&self, id: impl AsRef<str>, texture_id: imgui::TextureId, size: [f32; 2]) -> bool;
+	fn image_region(&self, id: impl AsRef<str>, texture_id: imgui::TextureId, size: [f32; 2], region: [f32; 4])
+		-> bool;
 }
 
 impl UiSupport for imgui::Ui {
@@ -98,4 +100,22 @@ impl UiSupport for imgui::Ui {
 		draw_list.add_image(texture_id, self.item_rect_min(), self.item_rect_max()).build();
 		clicked
 	}
+
+	fn image_region(
+		&self,
+		id: impl AsRef<str>,
+		texture_id: imgui::TextureId,
+		size: [f32; 2],
+		region: [f32; 4],
+	) -> bool {
+		let clicked = self.invisible_button(id, size);
+		let draw_list = self.get_window_draw_list();
+
+		draw_list
+			.add_image(texture_id, self.item_rect_min(), self.item_rect_max())
+			.uv_min([region[0], region[1]])
+			.uv_max([region[2], region[3]])
+			.build();
+		clicked
+	}
 }