multi-drag

rust-toolchain.toml

@@ -3,5 +3,6 @@
 # channel = "nightly-2024-07-27"
 # last stable
 # channel = "nightly-2024-11-20"
-channel = "nightly"
+# locking here to prevent compile error in holey-bytes crate
+channel = "nightly-2025-01-25"
 components = ["rust-src", "llvm-tools"]

sysdata/programs/render_example/src/examples/drag-and-drop.hb

@@ -2,42 +2,72 @@ intouch := @use("lib:intouch")
 render := @use("lib:render")
 stn := @use("stn")
 
+mouse_pos := stn.math.Vec2(int).(0, 0)
+mouse_event := @as(?intouch.MouseEvent, null)
+global_lock := false
+
+DraggableSurface := struct {
+	pos: stn.math.Vec2(int),
+	surface: render.Surface,
+	lock: bool,
+	process := fn(self: ^Self, screen: ^render.Surface): void {
+		screen.put_surface(self.surface, @bitcast(self.pos), false)
+		// funny hblang bug means need to check for boolean equality
+		if global_lock | @unwrap(mouse_event).left {
+			if self.lock == true return
+		}
+		if mouse_pos.x >= self.pos.x & mouse_pos.x <= self.pos.x + @bitcast(self.surface.width) & mouse_pos.y >= self.pos.y & mouse_pos.y <= self.pos.y + @bitcast(self.surface.height) {
+			global_lock = true
+			self.lock = false
+			if @unwrap(mouse_event).left {
+				self.pos = .(
+					stn.math.clamp(int, self.pos.x + @unwrap(mouse_event).x_change, 1, @bitcast(screen.width) - @bitcast(self.surface.width) - 1),
+					stn.math.clamp(int, self.pos.y - @unwrap(mouse_event).y_change, 1, @bitcast(screen.height) - @bitcast(self.surface.height) - 1),
+				)
+				screen.put_rect(@bitcast(self.pos), .(self.surface.width, self.surface.height), render.RED)
+			} else {
+				screen.put_rect(@bitcast(self.pos), .(self.surface.width, self.surface.height), render.CYAN)
+			}
+		} else {
+			global_lock = false
+			self.lock = true
+		}
+	}
+}
+
 example := fn(): void {
 	screen := render.init(true)
-	mouse_pos := stn.math.Vec2(int).(0, 0)
 	image := render.image.from(@bitcast(&@embed("sysdata:assets/mini.qoi")))
-	if image == null {
+	image2 := render.image.from(@bitcast(&@embed("sysdata:assets/able.bmp")))
+	if image == null | image2 == null {
 		stn.log.error("failed to load images for whatever reason")
 		return
 	}
-	image_pos := stn.math.Vec2(int).(@bitcast(screen.width - image.width) / 2, @bitcast(screen.height - image.height) / 2)
-	image_dim: stn.math.Vec2(int) = .(@bitcast(image.width), @bitcast(image.height))
+
+	thing := DraggableSurface.(
+		.(400, 400),
+		image,
+		false,
+	)
+
+	thing2 := DraggableSurface.(
+		.(0, 0),
+		image2,
+		false,
+	)
 
 	loop {
-		mouse := intouch.recieve_mouse_event()
-		if mouse == null {
-			continue
-		}
-		screen.put_surface(image, @bitcast(image_pos), false)
+		mouse_event = intouch.recieve_mouse_event()
+		if mouse_event == null continue
+		mouse_pos.x = stn.math.clamp(int, mouse_pos.x + mouse_event.x_change, 6, @bitcast(screen.width) - 6)
+		mouse_pos.y = stn.math.clamp(int, mouse_pos.y - @unwrap(mouse_event).y_change, 6, @bitcast(screen.height) - 6)
 
-		mouse_pos.x = stn.math.clamp(int, mouse_pos.x + mouse.x_change, 5, @bitcast(screen.width) - 5)
-		mouse_pos.y = stn.math.clamp(int, mouse_pos.y - mouse.y_change, 5, @bitcast(screen.height) - 5)
+		thing.process(&screen)
+		thing2.process(&screen)
 
-		// :(
-		if mouse_pos.x >= image_pos.x & mouse_pos.x <= image_pos.x + image_dim.x & mouse_pos.y >= image_pos.y & mouse_pos.y <= image_pos.y + image_dim.y {
-			if mouse.left {
-				screen.put_rect(@bitcast(image_pos), @bitcast(image_dim), render.RED)
-
-				image_pos.x = stn.math.clamp(int, image_pos.x + mouse.x_change, 0, @bitcast(screen.width) - image_dim.x)
-				image_pos.y = stn.math.clamp(int, image_pos.y - mouse.y_change, 0, @bitcast(screen.height) - image_dim.y)
-			} else {
-				screen.put_rect(@bitcast(image_pos), @bitcast(image_dim), render.CYAN)
-				screen.put_filled_circle(@bitcast(mouse_pos), 5, render.GRAY)
-				screen.put_circle(@bitcast(mouse_pos), 5, render.BLACK)
-			}
-		}
+		screen.put_filled_circle(@bitcast(mouse_pos), 5, render.BLACK)
 
 		screen.sync()
-		screen.clear(render.BLACK)
+		screen.clear(render.GRAY)
 	}
 }

sysdata/programs/render_example/src/main.hb

@@ -1 +1 @@
-.{example: main} := @use("./examples/intouch.hb")
+.{example: main} := @use("./examples/drag-and-drop.hb")

sysdata/system_config.toml

@@ -29,8 +29,8 @@ path = "boot:///render_example.hbf"
 # [boot.limine.ableos.modules.sunset_server]
 # path = "boot:///sunset_server.hbf"
 
-# [boot.limine.ableos.modules.ps2_mouse_driver]
-# path = "boot:///ps2_mouse_driver.hbf"
+[boot.limine.ableos.modules.ps2_mouse_driver]
+path = "boot:///ps2_mouse_driver.hbf"
 
 # [boot.limine.ableos.modules.ps2_keyboard_driver]
 # path = "boot:///ps2_keyboard_driver.hbf"