From 91609bd3b4dc3198a9e9aa630ab8f5295d498edf Mon Sep 17 00:00:00 2001
From: WerWolv <werwolv98@gmail.com>
Date: Tue, 19 Oct 2021 20:34:09 +0200
Subject: [PATCH] patterns: Added Icon/Cursor image pattern

---
 README.md           |  1 +
 patterns/ico.hexpat | 45 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 patterns/ico.hexpat

diff --git a/README.md b/README.md
index 1cf7317..d61535f 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,7 @@ Hex patterns, include patterns and magic files for the use with the ImHex Hex Ed
 | NRO | | `patterns/nro.hexpat` | Nintendo Switch NRO files | 
 | Java Class | `application/x-java-applet` | `patterns/java_class.hexpat` | Java Class files | 
 | ARM VTOR | | `patterns/arm_cm_vtor.hexpat` | ARM Cortex M Vector Table Layout | 
+| ICO | | `patterns/ico.hexpat` | Icon (.ico) or Cursor (.cur) files | 
 
 ### Pattern Libraries
 
diff --git a/patterns/ico.hexpat b/patterns/ico.hexpat
new file mode 100644
index 0000000..9843739
--- /dev/null
+++ b/patterns/ico.hexpat
@@ -0,0 +1,45 @@
+#pragma endian little
+
+#pragma MIME image/vnd.microsoft.icon
+#pragma MIME image/x-icon
+#pragma MIME image/icon
+#pragma MIME image/ico
+#pragma MIME text/ico
+#pragma MIME application/ico
+
+enum ImageType : u16 {
+	Icon = 1,
+	Cursor = 2
+};
+
+struct ICONDIR {
+	u16 reserved [[hidden]];
+	ImageType type;
+	u16 num_images;
+};
+
+struct ImageData {
+	u8 data[parent.image_data_size] [[inline]];
+};
+
+struct ICONDIRENTRY {
+	u8 width, height;
+	u8 num_colors;
+	u8 reserved [[hidden]];
+	
+	if (header.type == ImageType::Icon) {
+		u16 color_planes;
+		u16 bits_per_pixel;
+	} else if (header.type == ImageType::Cursor) {
+		u16 horizontal_hotspot_coordinate;
+		u16 vertical_hotspot_coordinate;
+	}
+	
+	u32 image_data_size;
+	ImageData *image_data : u32;
+};
+
+ICONDIR header @ 0x00;
+ICONDIRENTRY images[header.num_images] @ $;
+
+std::assert(header.reserved == 0x00, "Invalid ICO header");
\ No newline at end of file