initial refactor

src/main.c3

@@ -15,18 +15,15 @@ fn int main(String[] args)
 	rl::init_window(width, height, "Ugui Test");
 	ctx.input_window_size(width, height)!!;
 
-	double[10][4] median_times;
 	isz frame;
-	double median_input, median_layout, median_draw, median_tot;
 
 	// Main loop
 	while (!rl::window_should_close()) {
 		const int PARTIAL_INPUT  = 0;
 		const int PARTIAL_LAYOUT = 1;
 		const int PARTIAL_DRAW   = 2;
-		//timer_start();
 
-		/*** Start Input Handling ***/
+		/* Start Input Handling */
 		if (rl::is_window_resized()) {
 			width  = (short)rl::get_screen_width();
 			height = (short)rl::get_screen_height();
@@ -48,47 +45,40 @@ fn int main(String[] args)
 		buttons.btn_right = rl::is_mouse_button_down(rl::MOUSE_BUTTON_RIGHT);
 		buttons.btn_middle = rl::is_mouse_button_down(rl::MOUSE_BUTTON_MIDDLE);
 		ctx.input_mouse_button(buttons);
+		/* End Input Handling */
 
-		//timer_partial(PARTIAL_INPUT);
-		/*** End Input Handling ***/
-
-		/*** Start UI Handling ***/
+		/* Start UI Handling */
 		ctx.frame_begin()!!;
 
 		// main div, fill the whole window
 		ctx.div_begin("main", ugui::DIV_FILL)!!;
 		{|
 			ctx.layout_set_column()!!;
-			if (ctx.button("button0", ugui::Rect{.y = 100, .x = 100, .w = 30, .h = 30})!!.mouse_hold) {
-				io::printn("HOLDING button0");
+			if (ctx.button("button0", ugui::Rect{100,100,30,30})!!.mouse_press) {
+				io::printn("press button0");
 			}
 			ctx.layout_next_column()!!;
-			ctx.button("button1", ugui::Rect{.w = 30, .h = 30})!!;
+			if (ctx.button("button1", ugui::Rect{0,0,30,30})!!.mouse_press) {
+				io::printn("press button1");
+			}
 			ctx.layout_next_column()!!;
-			ctx.button("button2", ugui::Rect{.w = 30, .h = 30})!!;
+			if (ctx.button("button2", ugui::Rect{0,0,30,30})!!.mouse_release) {
+				io::printn("release button2");
+			}
 		|};
 		ctx.div_end()!!;
 
 		ctx.frame_end()!!;
-		//timer_partial(PARTIAL_LAYOUT);
-		/*** End UI Handling ***/
+		/* End UI Handling */
 
-		/*** Start UI Drawing ***/
+		/* Start UI Drawing */
 		rl::begin_drawing();
 		// ClearBackground(BLACK);
 
-		io::printn("----- Draw Begin -----");
 		rl::Color c;
 		for (Cmd* cmd; (cmd = ctx.cmd_queue.dequeue() ?? null) != null;) {
 			switch (cmd.type) {
 			case ugui::CmdType.CMD_RECT:
-				io::printfn(
-				    "draw rect x=%d y=%d w=%d h=%d",
-				    cmd.rect.rect.x,
-				    cmd.rect.rect.y,
-				    cmd.rect.rect.w,
-				    cmd.rect.rect.h
-				);
 				c = rl::Color{
 				    .r = cmd.rect.color.r,
 				    .g = cmd.rect.color.g,
@@ -106,52 +96,10 @@ fn int main(String[] args)
 				io::printfn("Unknown cmd type: %d", cmd.type);
 			}
 		}
-		io::printf("----- Draw End -----\n\n");
 
 		rl::end_drawing();
-		//timer_partial(PARTIAL_DRAW);
-		//timer_stop();
-		/*** End UI Drawing ***/
-		/*
-		median_times[frame][PARTIAL_INPUT] =
-		    1e3 * timer_get_sec(PARTIAL_INPUT);
-		median_times[frame][PARTIAL_LAYOUT] =
-		    1e3 * timer_get_sec(PARTIAL_LAYOUT);
-		median_times[frame][PARTIAL_DRAW] =
-		    1e3 * timer_get_sec(PARTIAL_DRAW);
-		median_times[frame][3] = 1e3 * timer_get_sec(-1);
-		*/
-		frame += 1;
-		frame %= 10;
-		/*
-		if (frame == 0) {
-			median_input  = 0;
-			median_layout = 0;
-			median_draw   = 0;
-			median_tot    = 0;
-			for (size_t i = 0; i < 10; i++) {
-				median_input += median_times[i][PARTIAL_INPUT];
-				median_layout += median_times[i][PARTIAL_LAYOUT];
-				median_draw += median_times[i][PARTIAL_DRAW];
-				median_tot += median_times[i][3];
-			}
-			median_input /= 10;
-			median_layout /= 10;
-			median_draw /= 10;
-			median_tot /= 10;
-		}
 
-		printf("input time: %lfms\n", median_input);
-		printf("layout time: %lfms\n", median_layout);
-		printf("draw time: %lfms\n", median_draw);
-		printf("total time: %lfms\n", median_tot);
-
-		// Throttle Frames
-		// TODO: add an fps limit, time frame generation and log it
-		const float TARGET_FPS = 100;
-		float wait_time = MAX((1.0 / TARGET_FPS) - timer_get_sec(-1), 0);
-		WaitTime(wait_time);
-		*/
+		// TODO: throttle FPS
 	}
 
 	rl::close_window();
@@ -160,6 +108,7 @@ fn int main(String[] args)
 	return 0;
 }
 
+/*
 fn void! test_vtree() @test
 {
     vtree::VTree(<String>) vt;
@@ -194,3 +143,4 @@ fn void! test_cache() @test
 	r = cc.get_or_insert(&&"Ciao Mamma", 1)!;
 	assert(*r!! == "Ciao Mamma", "incorrect string");
 }
+*/

src/ugui_button.c3

@@ -0,0 +1,48 @@
+module ugui;
+
+// draw a button, return the events on that button
+fn ElemEvents! Ctx.button(&ctx, String label, Rect size)
+{
+	Id id = hash(label);
+
+	Elem *parent = ctx.get_parent()!;
+	Elem *c_elem = ctx.get_elem(id)!;
+	// add it to the tree
+	ctx.tree.add(id, ctx.active_div)!;
+
+	// 1. Fill the element fields
+	// this resets the flags
+	c_elem.type     = ETYPE_BUTTON;
+	Color bg_color = uint_to_rgba(0x0000ffff);
+
+	// if the element is new or the parent was updated then redo layout
+	if (c_elem.flags.is_new || parent.flags.updated) {
+		// 2. Layout
+		c_elem.rect = ctx.position_element(parent, size, true);
+
+		// TODO: 3. Fill the button specific fields
+	}
+
+	// TODO: Check for interactions
+	// FIXME: this is not how normal buttons work, usually focus follows both
+	//        mouse hover and mouse down
+	c_elem.events = ctx.get_elem_events(c_elem);
+	if (parent.flags.has_focus) {
+		if (c_elem.events.mouse_hover) {
+			c_elem.flags.has_focus = true;
+			bg_color = uint_to_rgba(0x00ff00ff);
+		}
+	}
+
+	// Draw the button
+	Cmd cmd = {
+	    .type = CMD_RECT,
+	    .rect =	{
+		    .rect  = c_elem.rect,
+		    .color = bg_color,
+		},
+	};
+	ctx.cmd_queue.enqueue(&cmd)!;
+
+	return c_elem.events;
+}

src/ugui_data.c3

@@ -28,6 +28,7 @@ enum ElemType {
 bitstruct ElemFlags : uint {
 	bool updated : 0;
 	bool has_focus : 1;
+	bool is_new : 2;
 }
 
 bitstruct ElemEvents : uint {

src/ugui_impl.c3

@@ -11,6 +11,19 @@ fn Elem*! Ctx.get_parent(&ctx)
 	return ctx.cache.search(parent_id);
 }
 
+// get or push an element from the cache, return a pointer to it
+// resets all flags except is_new which is set accordingly
+macro Ctx.get_elem(&ctx, Id id)
+{
+	Elem empty_elem;
+	bool is_new;
+	Elem* c_elem;
+	c_elem = ctx.cache.get_or_insert(&empty_elem, id, &is_new)!;
+	c_elem.flags = (ElemFlags)0;
+	c_elem.flags.is_new = is_new;
+	return c_elem;
+}
+
 fn void! Ctx.init(&ctx)
 {
 	ctx.tree.init(MAX_ELEMENTS)!;
@@ -39,56 +52,40 @@ fn void Ctx.free(&ctx)
 
 fn void! Ctx.frame_begin(&ctx)
 {
-	// 1. Create the root div element
-	// NOTE: in c3 everythong is zero initialized by default
-	Rect space = {
-	    .w = ctx.width,
-	    .h = ctx.height,
-	};
-
-	Elem root = {
-	    .id    = ROOT_ID,
-	    .type  = ETYPE_DIV,
-	    .rect  = space,
-	    .div = {
-		    .layout   = LAYOUT_ROW,
-		},
-	};
 
+	// 2. Get the root element from the cache and update it
+	Elem* c_elem = ctx.get_elem(ROOT_ID)!;
 	// The root should have the updated flag only if the size of the window
 	// was changed between frames, this propagates an element size recalculation
 	// down the element tree
-	if (ctx.input.events.resize) {
-		root.flags.updated = true;
-	}
-
+	c_elem.flags.updated = ctx.input.events.resize;
 	// if the window has focus then the root element also has focus, no other
 	// computation needed, child elements need to check the mouse positon and
 	// other stuff
-	if (ctx.has_focus) {
-		root.flags.has_focus = true;
-	}
-
-	// FIXME: check errors
-	// 2. Get the root element from the cache and update it
-	bool is_new;
-	Elem empty_elem;
-	Elem* c_elem = ctx.cache.get_or_insert(&empty_elem, root.id, &is_new)!;
-	// flags always need to be set to the new flags
-	c_elem.flags = root.flags;
-	if (is_new || root.flags.updated) {
-		*c_elem = root;
+	c_elem.flags.has_focus = ctx.has_focus;
+
+	if (c_elem.flags.is_new || c_elem.flags.updated) {
+        Elem def_root = {
+            .id    = ROOT_ID,
+            .type  = ETYPE_DIV,
+            .rect  = {
+                .w = ctx.width,
+                .h = ctx.height,
+            },
+            .div = {
+                .layout   = LAYOUT_ROW,
+            },
+            .flags = c_elem.flags,
+        };
+
+        *c_elem = def_root;
 	}
 
 	// 3. Push the root element into the element tree
-	ctx.active_div = ctx.tree.add(root.id, 0)!;
-
-	// print_tree(ctx);
+	ctx.active_div = ctx.tree.add(ROOT_ID, 0)!;
 
 	// The root element does not push anything to the stack
 	// TODO: add a background color taken from a theme or config
-
-	io::printn("##### Frame Begin #####");
 }
 
 fn void! Ctx.frame_end(&ctx)
@@ -113,36 +110,22 @@ $if 1:
 	};
 	ctx.cmd_queue.enqueue(&cmd)!;
 $endif
-
-	io::printn("##### Frame End #####");
 }
 
 fn void! Ctx.div_begin(&ctx, String label, Rect size)
 {
 	Id id = hash(label);
 
-	bool is_new;
-	Elem empty_elem;
-	Elem* c_elem = ctx.cache.get_or_insert(&empty_elem, id, &is_new)!;
-
-	// FIXME: why save the id in the tree and not something more direct like
-	//        the element pointer or the index into the cache vector?
-	isz div_node = ctx.tree.add(id, ctx.active_div)!;
-
 	Elem *parent = ctx.get_parent()!;
-
-	ctx.tree.print();
-
-	// Use the current div
+	Elem* c_elem = ctx.get_elem(id)!;
+	isz div_node = ctx.tree.add(id, ctx.active_div)!;
 	ctx.active_div = div_node;
 
 	// 1. Fill the element fields
-	// this resets the flags
 	c_elem.type  = ETYPE_DIV;
-	c_elem.flags = (ElemFlags)0;
 
 	// do layout and update flags only if the element was updated
-	if (is_new || parent.flags.updated) {
+	if (c_elem.flags.is_new || parent.flags.updated) {
 		// 2. layout the element
 		c_elem.rect = ctx.position_element(parent, size);
 
@@ -183,62 +166,10 @@ fn void! Ctx.div_end(&ctx)
 	ctx.active_div = ctx.tree.parentof(ctx.active_div)!;
 }
 
-// @ensure elem != null
+/**
+ * @ensure elem != null
+**/
 fn bool Ctx.is_hovered(&ctx, Elem *elem)
 {
 	return point_in_rect(ctx.input.mouse.pos, elem.rect);
 }
-
-fn ElemEvents! Ctx.button(&ctx, String label, Rect size)
-{
-	Id id = hash(label);
-
-	// TODO: do layouting if the element is new or the parent has updated
-	bool is_new;
-	Elem empty_elem;
-	Elem *c_elem = ctx.cache.get_or_insert(&empty_elem, id, &is_new)!;
-
-	// add it to the tree
-	ctx.tree.add(id, ctx.active_div)!;
-	ctx.tree.print();
-
-	Elem *parent = ctx.get_parent()!;
-
-	// 1. Fill the element fields
-	// this resets the flags
-	c_elem.type     = ETYPE_BUTTON;
-	c_elem.flags    = (ElemFlags)0;
-	Color bg_color = uint_to_rgba(0x0000ffff);
-
-	// if the element is new or the parent was updated then redo layout
-	if (is_new || parent.flags.updated) {
-		// 2. Layout
-		c_elem.rect = ctx.position_element(parent, size, true);
-
-		// TODO: 3. Fill the button specific fields
-	}
-
-	// TODO: Check for interactions
-	if (parent.flags.has_focus) {
-		if (ctx.is_hovered(c_elem)) {
-			c_elem.flags.has_focus = true;
-			c_elem.events.mouse_hover = true;
-			bg_color = uint_to_rgba(0x00ff00ff);
-			c_elem.events.mouse_hold = ctx.input.mouse.down.btn_left;
-		} else {
-			c_elem.events.mouse_hover = false;
-		}
-	}
-
-	// Draw the button
-	Cmd cmd = {
-	    .type = CMD_RECT,
-	    .rect =	{
-		    .rect  = c_elem.rect,
-		    .color = bg_color,
-		},
-	};
-	ctx.cmd_queue.enqueue(&cmd)!;
-
-	return c_elem.events;
-}

src/ugui_input.c3

@@ -40,21 +40,64 @@ bitstruct MouseButtons : uint {
 	bool btn_5 : 4;
 }
 
+macro Ctx.mouse_pressed(&ctx)
+{
+    return ctx.input.mouse.updated & ctx.input.mouse.down;
+}
+
+macro Ctx.mouse_released(&ctx)
+{
+    return ctx.input.mouse.updated & ~ctx.input.mouse.down;
+}
+
+macro Ctx.mouse_down(&ctx)
+{
+    return ctx.input.mouse.down;
+}
+
+const MouseButtons BTN_NONE = (MouseButtons)0u;
+const MouseButtons BTN_ANY = (MouseButtons)(uint.max);
+const MouseButtons BTN_LEFT = {.btn_left = true};
+const MouseButtons BTN_MIDDLE = {.btn_middle = true};
+const MouseButtons BTN_RIGHT = {.btn_right = true};
+const MouseButtons BTN_4 = {.btn_4 = true};
+const MouseButtons BTN_5 = {.btn_5 = true};
+
+// FIXME: hthis compairson could be done with a cast using MouseButtons.inner
+// property but I could not figure out how
+macro Ctx.is_mouse_pressed(&ctx, MouseButtons btn)
+{
+    return (ctx.mouse_pressed() & btn) != BTN_NONE;
+}
+
+macro Ctx.is_mouse_released(&ctx, MouseButtons btn)
+{
+    return (ctx.mouse_released() & btn) != BTN_NONE;
+}
+
+macro Ctx.is_mouse_down(&ctx, MouseButtons btn)
+{
+    return (ctx.mouse_down() & btn) != BTN_NONE;
+}
+
+macro ElemEvents Ctx.get_elem_events(&ctx, Elem *elem)
+{
+    // TODO: add the other events
+    ElemEvents ev = {
+        .mouse_hover = ctx.is_hovered(elem),
+        .mouse_press = ctx.is_mouse_pressed(BTN_ANY),
+		.mouse_release = ctx.is_mouse_released(BTN_ANY),
+		.mouse_hold = ctx.is_mouse_down(BTN_ANY),
+    };
+    return ev;
+}
+
 // Mouse Button moved
 fn void Ctx.input_mouse_button(&ctx, MouseButtons buttons)
 {
 	ctx.input.mouse.updated = ctx.input.mouse.down ^ buttons;
 	ctx.input.mouse.down = buttons;
 	ctx.input.events.mouse_btn = true;
-
-	io::printfn(
-	    "Mouse Down: %s%s%s%s%s",
-	    buttons.btn_left ? "BTN_LEFT " : "",
-	    buttons.btn_right ? "BTN_RIGHT " : "",
-	    buttons.btn_middle ? "BTN_MIDDLE " : "",
-	    buttons.btn_4 ? "BTN_4 " : "",
-	    buttons.btn_5 ? "BTN_5 " : ""
-	);
 }
 
 // Mouse was moved, report absolute position