added libgrapheme

.gitignore

@@ -1,3 +1,4 @@
 *.o
+*.a
 build/*
 **/.ccls-cache

TODO

@@ -6,6 +6,8 @@
 [ ] Write a README.md
 [ ] Use an arena allocator for cache
 [ ] Do not redraw if there was no update (no layout and no draw)
+[ ] Better handling of the active and focused widgets, try
+    to maintain focus until mouse release (fix scroll bars)
 
 ## Commands
 [x] rect commads should have:
@@ -19,11 +21,11 @@
 
 ## Fonts
 [ ] Fix the missing alpha channel
-[ ] Fix the allignment
+[x] Fix the alignment
 
 ## Raylib
 [ ] Implement type (Rect, Color, Point) conversion functions between rl:: and ugui::
-[ ] Implement pixel radius rounding for border radius
+[x] Implement pixel radius rounding for border radius
 
 ## Widgets
 [ ] Dynamic text box to implement an fps counter

lib/libgrapheme.c3l/Makefile

@@ -0,0 +1,3 @@
+all:
+	make -C thirdparty/libgrapheme
+	cp thirdparty/libgrapheme/libgrapheme.a linux-x64/libgrapheme.a

lib/libgrapheme.c3l/libgrapheme.c3i

@@ -0,0 +1,46 @@
+module grapheme;
+
+const uint GRAPHEME_INVALID_CODEPOINT UINT32_C = 0xFFFD;
+
+enum BidirectionalDirection {
+	GRAPHEME_BIDIRECTIONAL_DIRECTION_NEUTRAL,
+	GRAPHEME_BIDIRECTIONAL_DIRECTION_LTR,
+	GRAPHEME_BIDIRECTIONAL_DIRECTION_RTL,
+}
+
+fn isz bidirectional_get_line_embedding_levels(uint *, isz, ichar *, isz) @extern("grapheme_bidirectional_get_line_embedding_levels");
+
+fn isz bidirectional_preprocess_paragraph(uint *, isz, BidirectionalDirection, uint *, isz, BidirectionalDirection *) @extern("grapheme_bidirectional_preprocess_paragraph");
+
+fn isz bidirectional_reorder_line(uint *, uint *, isz, uint *, isz) @extern("grapheme_bidirectional_reorder_line");
+
+fn isz decode_utf8(char *, isz, uint *) @extern("grapheme_decode_utf8");
+fn isz encode_utf8(uint, char *, isz) @extern("grapheme_encode_utf8");
+
+fn bool is_character_break(uint, uint, ushort *) @extern("grapheme_is_character_break");
+
+fn bool is_lowercase(uint *, isz, isz *) @extern("grapheme_is_lowercase");
+fn bool is_titlecase(uint *, isz, isz *) @extern("grapheme_is_titlecase");
+fn bool is_uppercase(uint *, isz, isz *) @extern("grapheme_is_uppercase");
+
+fn bool is_lowercase_utf8(char *, isz, isz *) @extern("grapheme_is_lowercase_utf8");
+fn bool is_titlecase_utf8(char *, isz, isz *) @extern("grapheme_is_titlecase_utf8");
+fn bool is_uppercase_utf8(char *, isz, isz *) @extern("grapheme_is_uppercase_utf8");
+
+fn isz next_character_break(uint *, isz) @extern("grapheme_next_character_break");
+fn isz next_line_break(uint *, isz) @extern("grapheme_next_line_break");
+fn isz next_sentence_break(uint *, isz) @extern("grapheme_next_sentence_break");
+fn isz next_word_break(uint *, isz) @extern("grapheme_next_word_break");
+
+fn isz next_character_break_utf8(char *, isz) @extern("grapheme_next_character_break_utf8");
+fn isz next_line_break_utf8(char *, isz) @extern("grapheme_next_line_break_utf8");
+fn isz next_sentence_break_utf8(char *, isz) @extern("grapheme_next_sentence_break_utf8");
+fn isz next_word_break_utf8(char *, isz) @extern("grapheme_next_word_break_utf8");
+
+fn isz to_lowercase(uint *, isz, uint *, isz) @extern("grapheme_to_lowercase");
+fn isz to_titlecase(uint *, isz, uint *, isz) @extern("grapheme_to_titlecase");
+fn isz to_uppercase(uint *, isz, uint *, isz) @extern("grapheme_to_uppercase");
+
+fn isz to_lowercase_utf8(char *, isz, char *, isz) @extern("grapheme_to_lowercase_utf8");
+fn isz to_titlecase_utf8(char *, isz, char *, isz) @extern("grapheme_to_titlecase_utf8");
+fn isz to_uppercase_utf8(char *, isz, char *, isz) @extern("grapheme_to_uppercase_utf8");

lib/libgrapheme.c3l/manifest.json

@@ -0,0 +1,9 @@
+{
+  "provides": "grapheme",
+  "targets": {
+    "linux-x64": {
+      "dependencies": [],
+      "linked-libraries": ["grapheme", "c"]
+    }
+  }
+}

lib/libgrapheme.c3l/project.json

@@ -0,0 +1,44 @@
+{
+  // Language version of C3.
+  "langrev": "1",
+  // Warnings used for all targets.
+  "warnings": ["no-unused"],
+  // Directories where C3 library files may be found.
+  "dependency-search-paths": [".."],
+  // Libraries to use for all targets.
+  "dependencies": ["grapheme"],
+  // Authors, optionally with email.
+  "authors": ["Alessandro Mauri <alemauri001@gmail.com"],
+  // Version using semantic versioning.
+  "version": "0.1.0",
+  // Sources compiled for all targets.
+  "sources": [],
+  // C sources if the project also compiles C sources
+  // relative to the project file.
+  // "c-sources": [ "csource/**" ],
+  // Output location, relative to project file.
+  "output": "build",
+  // Architecture and OS target.
+  // You can use 'c3c --list-targets' to list all valid targets.
+  // "target": "windows-x64",
+  "features": [
+    // See rcore.c3
+    //"SUPPORT_INTERNAL_MEMORY_MANAGEMENT",
+    //"SUPPORT_STANDARD_FILEIO",
+    //"SUPPORT_FILE_SYSTEM_FUNCTIONS",
+    //"SUPPORT_DATA_ENCODER",
+    // See text.c3
+    //"SUPPORT_TEXT_CODEPOINTS_MANAGEMENT",
+    //"SUPPORT_TEXT_C_STRING_MANAGEMENT",
+    //"SUPPORT_RANDOM_GENERATION",
+    //"SUPPORT_RAYGUI",
+    //"RAYGUI_NO_ICONS",
+    //"RAYGUI_CUSTOM_ICONS",
+  ],
+  // Global settings.
+  // CPU name, used for optimizations in the LLVM backend.
+  "cpu": "generic",
+  // Optimization: "O0", "O1", "O2", "O3", "O4", "O5", "Os", "Oz".
+  "opt": "O0"
+  // See resources/examples/project_all_settings.json and 'c3c --list-project-properties' to see more properties.
+}

lib/libgrapheme.c3l/thirdparty/libgrapheme

@@ -0,0 +1 @@
+Subproject commit 65b354f0fcb1d925f4340dbb4415ea06e8af2bec

src/main.c3

@@ -27,7 +27,7 @@ fn int main(String[] args)
 {
 	ugui::Ctx ui;
 	ui.init()!!;
-	ui.font.load("/usr/share/fonts/TTF/FreeSans.ttf", 16, scale: 1.5)!!;
+	ui.font.load("/usr/share/fonts/TTF/Hack-Regular.ttf", 16, scale: 1.5)!!;
 
 	short width = 800;
 	short height = 450;
@@ -94,7 +94,7 @@ fn int main(String[] args)
 				io::printfn("slider: %f", e.slider.value);
 			}
 
-			ui.text_unbounded("text1", "Ciao Mamma\n Sono a Casa")!!;
+			ui.text_unbounded("text1", "Ciao Mamma\nSono a Casa")!!;
 		|};
 		ui.div_end()!!;
 
@@ -146,9 +146,10 @@ fn int main(String[] args)
 					.height = cmd.rect.rect.h,
 					.width = cmd.rect.rect.w,
 				};
-				// TODO: find a way to do real pixel-perfec rounding
-				float round = cmd.rect.radius ? 0.2 : 0;
-				rl::draw_rectangle_rounded(r, round, 2, c);
+			    float rad = cmd.rect.radius;
+				// for some weird-ass reason the straight forward inverse formula does not work
+			    float roundness = r.width > r.height ? (2.1*rad)/r.height : (2.1*rad)/r.width;
+				rl::draw_rectangle_rounded(r, roundness, 0, c);
 			case ugui::CmdType.CMD_UPDATE_ATLAS:
 				rl::unload_image(font_atlas);
 				font_atlas.data = cmd.update_atlas.raw_buffer;

src/ugui_cmd.c3

@@ -4,6 +4,11 @@ module ugui;
 // "rect" is the bounding box of the element, which includes the border and the padding (so not just the content)
 fn void! Ctx.push_rect(&ctx, Rect rect, Color color, bool do_border = false, bool do_padding = false, bool do_radius = false)
 {
+    // FIXME: this should be culled higher up, maybe
+    if (rect.w <= 0 || rect.h <= 0) {
+        return;
+    }
+
 	Rect border = ctx.style.border;
 	Rect padding = ctx.style.padding;
 	ushort radius = ctx.style.radius;
@@ -32,3 +37,14 @@ fn void! Ctx.push_rect(&ctx, Rect rect, Color color, bool do_border = false, boo
 	};
 	ctx.cmd_queue.enqueue(&cmd)!;
 }
+
+// TODO: add texture id
+fn void! Ctx.push_sprite(&ctx, Rect bounds, Rect texture)
+{
+    Cmd cmd = {
+		.type = CMD_SPRITE,
+		.sprite.rect = bounds,
+		.sprite.texture_rect = texture,
+	};
+	ctx.cmd_queue.enqueue(&cmd)!;
+}

src/ugui_div.c3

@@ -39,14 +39,7 @@ fn void! Ctx.div_begin(&ctx, String label, Rect size)
 	}
 
 	// Add the background to the draw stack
-	Cmd cmd = {
-		.type = CMD_RECT,
-		.rect = {
-		    .rect  = c_elem.bounds,
-		    .color = c_elem.div.color_bg,
-		},
-	};
-	ctx.cmd_queue.enqueue(&cmd)!;
+	ctx.push_rect(c_elem.bounds, c_elem.div.color_bg)!;
 
 	// TODO: check active
 	// TODO: check resizeable
@@ -95,17 +88,8 @@ fn void! Ctx.div_begin(&ctx, String label, Rect size)
 				c_elem.div.origin_r = c_elem.div.origin_c;
 			}
 
-			Cmd scrl = {
-				.type = CMD_RECT,
-				.rect.rect = vslider,
-				.rect.color = uint_to_rgba(0x999999ff),
-			};
-			ctx.cmd_queue.enqueue(&scrl)!;
-
-			scrl.rect.rect = vhandle;
-			scrl.rect.color = uint_to_rgba(0x9999ffff);
-			ctx.cmd_queue.enqueue(&scrl)!;
-
+			ctx.push_rect(vslider, uint_to_rgba(0x999999ff))!;
+			ctx.push_rect(vhandle, uint_to_rgba(0x9999ffff))!;
 		} else {
 			c_elem.div.scroll.on_y = false;
 		}

src/ugui_impl.c3

@@ -56,7 +56,7 @@ fn void! Ctx.init(&ctx)
 	ctx.style.margin  = Rect{2, 2, 2, 2};
 	ctx.style.border  = Rect{2, 2, 2, 2};
 	ctx.style.padding = Rect{1, 1, 1, 1};
-	ctx.style.radius  = 4;
+	ctx.style.radius  = 5;
 	ctx.style.bgcolor = uint_to_rgba(0x282828ff);
 	ctx.style.fgcolor = uint_to_rgba(0xfbf1c7ff);
 	ctx.style.brcolor = uint_to_rgba(0xd79921ff);

src/ugui_slider.c3

@@ -42,27 +42,11 @@ fn ElemEvents! Ctx.slider_hor(&ctx, String label, Rect size)
 		}
 	}
 
-	// Draw the button
+	// Draw the slider background and handle
 	Color bg_color = uint_to_rgba(0x0000ffff);
 	Color handle_color = uint_to_rgba(0x0ff000ff);
-
-	Cmd cmd = {
-	    .type = CMD_RECT,
-	    .rect =	{
-		    .rect  = c_elem.bounds,
-		    .color = bg_color,
-		},
-	};
-	ctx.cmd_queue.enqueue(&cmd)!;
-
-	cmd = Cmd{
-	    .type = CMD_RECT,
-	    .rect =	{
-		    .rect  = c_elem.slider.handle,
-		    .color = handle_color,
-		},
-	};
-	ctx.cmd_queue.enqueue(&cmd)!;
+	ctx.push_rect(c_elem.bounds, bg_color)!;
+	ctx.push_rect(c_elem.slider.handle, handle_color)!;
 
 	return c_elem.events;
 }
@@ -114,27 +98,11 @@ fn ElemEvents! Ctx.slider_ver(&ctx, String label, Rect size)
 		}
 	}
 
-	// Draw the button
+	// Draw the slider background and handle
 	Color bg_color = uint_to_rgba(0x0000ffff);
 	Color handle_color = uint_to_rgba(0x0ff000ff);
-
-	Cmd cmd = {
-	    .type = CMD_RECT,
-	    .rect =	{
-		    .rect  = c_elem.bounds,
-		    .color = bg_color,
-		},
-	};
-	ctx.cmd_queue.enqueue(&cmd)!;
-
-	cmd = Cmd{
-	    .type = CMD_RECT,
-	    .rect =	{
-		    .rect  = c_elem.slider.handle,
-		    .color = handle_color,
-		},
-	};
-	ctx.cmd_queue.enqueue(&cmd)!;
+	ctx.push_rect(c_elem.bounds, bg_color)!;
+	ctx.push_rect(c_elem.slider.handle, handle_color)!;
 
 	return c_elem.events;
 }

src/ugui_text.c3

@@ -21,11 +21,11 @@ fn Rect! Ctx.get_text_bounds(&ctx, String text, bool* update_atlas)
 			if (n) { *update_atlas = true; }
 		} else {
 			text_bounds.h += line_height + line_gap;
-			if (line_len > text_bounds.w) {
-				text_bounds.w = line_len;
-			}
 			line_len = 0;
 		}
+		if (line_len > text_bounds.w) {
+			text_bounds.w = line_len;
+		}
 	}
 
 	return text_bounds;
@@ -89,23 +89,20 @@ fn void! Ctx.text_unbounded(&ctx, String label, String text)
 		Codepoint cp = (Codepoint)c;
 		if (cp != '\n') {
 			gp = ctx.font.get_glyph(cp)!;
-			Cmd cmd = {
-				.type = CMD_SPRITE,
-				.sprite.rect = {
-					.x = orig.x + line_len + gp.ox,
-					.y = orig.y + gp.oy + baseline,
-					.w = gp.w,
-					.h = gp.h,
-				},
-				.sprite.texture_rect = {
-					.x = gp.u,
-					.y = gp.v,
-					.w = gp.w,
-					.h = gp.h,
-				},
+			Rect gb = {
+    			.x = orig.x + line_len + gp.ox,
+    			.y = orig.y + gp.oy + baseline,
+    			.w = gp.w,
+    			.h = gp.h,
 			};
+			Rect gt = {
+    			.x = gp.u,
+    			.y = gp.v,
+    			.w = gp.w,
+    			.h = gp.h,
+			};
+			ctx.push_sprite(gb, gt)!;
 			line_len += gp.adv;
-			ctx.cmd_queue.enqueue(&cmd)!;
 		} else {
 			orig.y += line_height + line_gap;
 			line_len = 0;