text box

examples/test_app/main.c

@@ -7,6 +7,7 @@
 *
 *****************************************************************/
 #include<stdlib.h>
+#include<string.h>
 #include"milepost.h"
 
 #define LOG_SUBSYSTEM "Main"
@@ -137,36 +138,24 @@ int main()
 
 		mp_rect windowRect = mp_window_get_content_rect(window);
 
-		ui_style defaultStyle = {.borderSize = 2,
+		ui_style defaultStyle = {.bgColor = {0.9, 0.9, 0.9, 1},
-		                         .borderColor = {0, 0, 1, 1},
-		                         .textColor = {0, 0, 0, 1},
-		                         .font = font,
-		                         .fontSize = 32};
-
-		ui_style buttonStyle[UI_STYLE_SELECTOR_COUNT];
-		for(int i=0; i<UI_STYLE_SELECTOR_COUNT; i++)
-		{
-			buttonStyle[i] = (ui_style){ .backgroundColor = {0.8, 0.8, 0.8, 1},
-			                             .foregroundColor = {0.5, 0.5, 0.5, 1},
 		                         .borderSize = 2,
 		                         .borderColor = {0, 0, 1, 1},
-			                             .textColor = {0, 0, 0, 1},
+		                         .fontColor = {0, 0, 0, 1},
 		                         .font = font,
 		                         .fontSize = 32};
-		}
-		buttonStyle[UI_STYLE_HOT].borderColor = (mg_color){1, 0, 0, 1};
-		buttonStyle[UI_STYLE_ACTIVE].borderColor = (mg_color){1, 0, 0, 1};
-		buttonStyle[UI_STYLE_ACTIVE].foregroundColor = (mg_color){0.1, 0.1, 0.1, 1};
 
 		ui_begin_frame(windowRect.w, windowRect.h, defaultStyle);
 		{
-			ui_size_push(UI_AXIS_X, UI_SIZE_PIXELS, 600, 0);
+			ui_push_bg_color_ext(UI_STYLE_TAG_BUTTON, UI_STYLE_SEL_ANY, (mg_color){0.8, 0.8, 0.8, 1});
-			ui_size_push(UI_AXIS_Y, UI_SIZE_PIXELS, 200, 0);
+			ui_push_fg_color_ext(UI_STYLE_TAG_BUTTON, UI_STYLE_SEL_ANY, (mg_color){0.5, 0.5, 0.5, 1});
+			ui_push_border_color_ext(UI_STYLE_TAG_BUTTON, UI_STYLE_SEL_ANY, (mg_color){0, 0, 1, 1});
 
-			for(int i=0; i<UI_STYLE_SELECTOR_COUNT; i++)
+			ui_push_border_color_ext(UI_STYLE_TAG_BUTTON, UI_STYLE_SEL_HOT|UI_STYLE_SEL_ACTIVE, (mg_color){1, 0, 0, 1});
-			{
+			ui_push_fg_color_ext(UI_STYLE_TAG_BUTTON, UI_STYLE_SEL_ACTIVE, (mg_color){0.1, 0.1, 0.1, 1});
-				ui_style_push(i, buttonStyle[i]);
+
-			}
+			ui_push_size(UI_AXIS_X, UI_SIZE_PIXELS, 600, 0);
+			ui_push_size(UI_AXIS_Y, UI_SIZE_PIXELS, 200, 0);
 
 			ui_menu_bar("menu")
 			{
@@ -194,8 +183,8 @@ int main()
 			ui_box* container = ui_box_begin("Test", UI_FLAG_DRAW_BORDER | UI_FLAG_DRAW_BACKGROUND);
 			ui_box_set_layout(container, UI_AXIS_X, UI_ALIGN_END, UI_ALIGN_CENTER);
 			{
-				ui_size_push(UI_AXIS_X, UI_SIZE_TEXT, 0, 0);
+				ui_push_size(UI_AXIS_X, UI_SIZE_TEXT, 0, 0);
-				ui_size_push(UI_AXIS_Y, UI_SIZE_PARENT_RATIO, 0.25, 0);
+				ui_push_size(UI_AXIS_Y, UI_SIZE_PARENT_RATIO, 0.25, 0);
 
 				ui_sig sig1 = ui_button("Child1");
 				if(sig1.hovering)
@@ -220,29 +209,29 @@ int main()
 				ui_box_set_floating(block, UI_AXIS_X, 100);
 				ui_box_set_floating(block, UI_AXIS_Y, 100);
 
-				ui_size_push(UI_AXIS_X, UI_SIZE_PIXELS, 200, 0);
+				ui_push_size(UI_AXIS_X, UI_SIZE_PIXELS, 200, 0);
-				ui_size_push(UI_AXIS_Y, UI_SIZE_PIXELS, 20, 0);
+				ui_push_size(UI_AXIS_Y, UI_SIZE_PIXELS, 20, 0);
 
 				static f32 scrollValue = 0.;
 				ui_scrollbar("scroll", .25, &scrollValue);
 
-				ui_size_pop(UI_AXIS_X);
+				ui_pop_size(UI_AXIS_X);
-				ui_size_pop(UI_AXIS_Y);
+				ui_pop_size(UI_AXIS_Y);
 
-				ui_size_pop(UI_AXIS_X);
+				ui_pop_size(UI_AXIS_X);
-				ui_size_pop(UI_AXIS_Y);
+				ui_pop_size(UI_AXIS_Y);
 
 			} ui_box_end();
 
-			ui_size_pop(UI_AXIS_X);
+			ui_pop_size(UI_AXIS_X);
-			ui_size_pop(UI_AXIS_Y);
+			ui_pop_size(UI_AXIS_Y);
 
-			ui_size_push(UI_AXIS_X, UI_SIZE_PIXELS, 200, 0);
+			ui_push_size(UI_AXIS_X, UI_SIZE_PIXELS, 200, 0);
-			ui_size_push(UI_AXIS_Y, UI_SIZE_PIXELS, 200, 0);
+			ui_push_size(UI_AXIS_Y, UI_SIZE_PIXELS, 200, 0);
 			ui_panel_begin("panel");
 
-			ui_size_push(UI_AXIS_X, UI_SIZE_TEXT, 0, 0);
+			ui_push_size(UI_AXIS_X, UI_SIZE_TEXT, 0, 0);
-			ui_size_push(UI_AXIS_Y, UI_SIZE_TEXT, 0, 0);
+			ui_push_size(UI_AXIS_Y, UI_SIZE_TEXT, 0, 0);
 
 			ui_box* b = ui_box_begin("container", 0);
 			ui_box_set_size(b, UI_AXIS_X, UI_SIZE_CHILDREN, 0, 0);
@@ -250,19 +239,24 @@ int main()
 				ui_button("Hello 1");
 				ui_button("Hello 2");
 				ui_button("Hello 3");
+
+				const u32 backingMaxSize = 4096;
+				static char backing[4096];
+				static str8 text = {};
+
+				ui_text_box_result res = ui_text_box("textbox", mem_scratch(), text);
+				memcpy(backing, res.text.ptr, minimum(res.text.len, backingMaxSize));
+				text = str8_from_buffer(res.text.len, backing);
+
 			ui_box_end();
 
-			ui_size_pop(UI_AXIS_X);
+			ui_pop_size(UI_AXIS_X);
-			ui_size_pop(UI_AXIS_Y);
+			ui_pop_size(UI_AXIS_Y);
 
 			ui_panel_end();
-			ui_size_pop(UI_AXIS_X);
+			ui_pop_size(UI_AXIS_X);
-			ui_size_pop(UI_AXIS_Y);
+			ui_pop_size(UI_AXIS_Y);
 
-			for(int i=0; i<UI_STYLE_SELECTOR_COUNT; i++)
-			{
-				ui_style_pop(i);
-			}
 
 		} ui_end_frame();
 
@@ -271,6 +265,8 @@ int main()
 		mg_canvas_flush(canvas);
 
 		mg_surface_present(surface);
+
+		mem_arena_clear(mem_scratch());
 	}
 
 	mg_surface_destroy(surface);

src/graphics.c

@@ -3215,9 +3215,9 @@ int mg_font_get_codepoint_extents(mg_font font, utf32 codePoint, mg_text_extents
 	return(0);
 }
 
-mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text)
+mp_rect mg_text_bounding_box_utf32(mg_font font, f32 fontSize, str32 codePoints)
 {
-	if(!text.len || !text.ptr)
+	if(!codePoints.len || !codePoints.ptr)
 	{
 		return((mp_rect){});
 	}
@@ -3229,7 +3229,6 @@ mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text)
 	}
 
 	mem_arena* scratch = mem_scratch();
-	str32 codePoints = utf8_push_to_codepoints(scratch, text);
 	str32 glyphIndices = mg_font_push_glyph_indices(font, scratch, codePoints);
 
 	//NOTE(martin): find width of missing character
@@ -3302,6 +3301,18 @@ mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text)
 	return(rect);
 }
 
+mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text)
+{
+	if(!text.len || !text.ptr)
+	{
+		return((mp_rect){});
+	}
+
+	mem_arena* scratch = mem_scratch();
+	str32 codePoints = utf8_push_to_codepoints(scratch, text);
+	return(mg_text_bounding_box_utf32(font, fontSize, codePoints));
+}
+
 //-----------------------------------------------------------------------------------------------------------
 // Transform matrix settings
 //-----------------------------------------------------------------------------------------------------------

src/graphics.h

@@ -135,6 +135,7 @@ int mg_font_get_codepoint_extents(mg_font font, utf32 codePoint, mg_text_extents
 
 int mg_font_get_glyph_extents(mg_font font, str32 glyphIndices, mg_text_extents* outExtents);
 
+mp_rect mg_text_bounding_box_utf32(mg_font font, f32 fontSize, str32 text);
 mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text);
 
 //------------------------------------------------------------------------------------------

src/osx_app.mm

@@ -636,7 +636,9 @@ static void mp_update_text(utf32 codepoint)
 	if(text->lastUpdate != frameCounter)
 	{
 		text->codePoints.len = 0;
+		text->lastUpdate = frameCounter;
 	}
+
 	text->codePoints.ptr = text->backing;
 	if(text->codePoints.len < MP_INPUT_TEXT_BACKING_SIZE)
 	{

src/ui.h

@@ -74,17 +74,22 @@ typedef struct ui_size
 	f32 strictness;
 } ui_size;
 
-typedef enum { UI_STYLE_NORMAL,
+typedef enum { UI_STYLE_SEL_NORMAL = 1<<0,
-               UI_STYLE_HOT,
+               UI_STYLE_SEL_HOT    = 1<<1,
-               UI_STYLE_ACTIVE,
+               UI_STYLE_SEL_ACTIVE = 1<<2,
-               UI_STYLE_SELECTOR_COUNT } ui_style_selector;
+               UI_STYLE_SEL_ANY    = UI_STYLE_SEL_NORMAL|UI_STYLE_SEL_HOT|UI_STYLE_SEL_ACTIVE,
+             } ui_style_selector;
+
+typedef u32 ui_style_tag;
+#define UI_STYLE_TAG_ANY (ui_style_tag)0
 
 typedef struct ui_style
 {
-	mg_color backgroundColor;
+	ui_size size[UI_AXIS_COUNT];
-	mg_color foregroundColor;
+	mg_color bgColor;
+	mg_color fgColor;
 	mg_color borderColor;
-	mg_color textColor;
+	mg_color fontColor;
 	mg_font font;
 	f32 fontSize;
 	f32 borderSize;
@@ -129,18 +134,15 @@ struct ui_box
 	ui_flags flags;
 	str8 string;
 
-	// layout
+	// styling and layout
+	ui_style_tag tag;
+	ui_style* targetStyle;
+	ui_style computedStyle;
 	u32 z;
 	bool floating[UI_AXIS_COUNT];
-	ui_size desiredSize[UI_AXIS_COUNT];
 	ui_layout layout;
-	mp_rect rect;
 	f32 childrenSum[2];
-
+	mp_rect rect;
-	// styling
-	ui_style* styles[UI_STYLE_SELECTOR_COUNT];
-	ui_style computedStyle;
-	ui_style_selector styleSelector;
 
 	// signals
 	ui_sig* sig;
@@ -149,6 +151,7 @@ struct ui_box
 	bool closed;
 	bool parentClosed;
 	bool dragging;
+	bool hot;
 	bool active;
 	vec2 scroll;
 
@@ -178,14 +181,50 @@ void ui_box_set_style_selector(ui_box* box, ui_style_selector selector);
 
 ui_sig ui_box_sig(ui_box* box);
 
-void ui_size_push(ui_axis axis, ui_size_kind kind, f32 value, f32 strictness);
+void ui_push_size(ui_axis axis, ui_size_kind kind, f32 value, f32 strictness);
-void ui_size_pop(ui_axis axis);
+void ui_push_size_ext(ui_style_tag tag, ui_style_selector selector, ui_axis axis, ui_size_kind kind, f32 value, f32 strictness);
-void ui_style_push(ui_style_selector selector, ui_style style);
+void ui_pop_size(ui_axis axis);
-void ui_style_pop(ui_style_selector selector);
+
+void ui_push_bg_color(mg_color color);
+void ui_push_fg_color(mg_color color);
+void ui_push_font(mg_font font);
+void ui_push_font_size(f32 size);
+void ui_push_font_color(mg_color color);
+void ui_push_border_size(f32 size);
+void ui_push_border_color(mg_color color);
+void ui_push_roundness(f32 roundness);
+
+void ui_push_bg_color_ext(ui_style_tag tag, ui_style_selector selector, mg_color color);
+void ui_push_fg_color_ext(ui_style_tag tag, ui_style_selector selector, mg_color color);
+void ui_push_font_ext(ui_style_tag tag, ui_style_selector selector, mg_font font);
+void ui_push_font_size_ext(ui_style_tag tag, ui_style_selector selector, f32 size);
+void ui_push_font_color_ext(ui_style_tag tag, ui_style_selector selector, mg_color color);
+void ui_push_border_size_ext(ui_style_tag tag, ui_style_selector selector, f32 size);
+void ui_push_border_color_ext(ui_style_tag tag, ui_style_selector selector, mg_color color);
+void ui_push_roundness_ext(ui_style_tag tag, ui_style_selector selector, f32 roundness);
+
+void ui_pop_bg_color();
+void ui_pop_fg_color();
+void ui_pop_font();
+void ui_pop_font_size();
+void ui_pop_font_color();
+void ui_pop_border_size();
+void ui_pop_border_color();
+void ui_pop_roundness();
 
 // Basic helpers
-ui_sig ui_label(const char* label);
 
+enum {
+	UI_STYLE_TAG_USER_MAX = 1<<16,
+	UI_STYLE_TAG_LABEL,
+	UI_STYLE_TAG_BUTTON,
+	UI_STYLE_TAG_SCROLLBAR,
+	UI_STYLE_TAG_PANEL,
+	UI_STYLE_TAG_TOOLTIP,
+	UI_STYLE_TAG_MENU
+};
+
+ui_sig ui_label(const char* label);
 ui_sig ui_button(const char* label);
 ui_box* ui_scrollbar(const char* label, f32 thumbRatio, f32* scrollValue);
 
@@ -205,6 +244,16 @@ void ui_menu_begin(const char* label);
 void ui_menu_end();
 #define ui_menu(name) defer_loop(ui_menu_begin(name), ui_menu_end())
 
+typedef struct ui_text_box_result
+{
+	bool changed;
+	bool accepted;
+	str8 text;
+
+}ui_text_box_result;
+
+ui_text_box_result ui_text_box(const char* name, mem_arena* arena, str8 text);
+
 #ifdef __cplusplus
 } // extern "C"
 #endif

src/util/strings.c

@@ -257,6 +257,57 @@ str32 str32_push_slice(mem_arena* arena, str32 s, u64 start, u64 end)
 	return(str32_push_copy(arena, slice));
 }
 
+void str32_list_init(str32_list* list)
+{
+	ListInit(&list->list);
+	list->eltCount = 0;
+	list->len = 0;
+}
+
+void str32_list_push(mem_arena* arena, str32_list* list, str32 str)
+{
+	str32_elt* elt = mem_arena_alloc_type(arena, str32_elt);
+	elt->string = str;
+	ListAppend(&list->list, &elt->listElt);
+	list->eltCount++;
+	list->len += str.len;
+}
+
+str32 str32_list_collate(mem_arena* arena, str32_list list, str32 prefix, str32 separator, str32 postfix)
+{
+	str32 str = {};
+	str.len = prefix.len + list.len + list.eltCount*separator.len + postfix.len;
+	str.ptr = mem_arena_alloc_array(arena, u32, str.len);
+	char* dst = (char*)str.ptr;
+	memcpy(dst, prefix.ptr, prefix.len*sizeof(u32));
+	dst += prefix.len*sizeof(u32);
+
+	str32_elt* elt = ListFirstEntry(&list.list, str32_elt, listElt);
+	if(elt)
+	{
+		memcpy(dst, elt->string.ptr, elt->string.len*sizeof(u32));
+		dst += elt->string.len*sizeof(u32);
+		elt = ListNextEntry(&list.list, elt, str32_elt, listElt);
+	}
+
+	for( ; elt != 0; elt = ListNextEntry(&list.list, elt, str32_elt, listElt))
+	{
+		memcpy(dst, separator.ptr, separator.len*sizeof(u32));
+		dst += separator.len*sizeof(u32);
+		memcpy(dst, elt->string.ptr, elt->string.len*sizeof(u32));
+		dst += elt->string.len*sizeof(u32);
+	}
+	memcpy(dst, postfix.ptr, postfix.len*sizeof(u32));
+	return(str);
+}
+
+str32 str32_list_join(mem_arena* arena, str32_list list)
+{
+	str32 empty = {.len = 0, .ptr = 0};
+	return(str32_list_collate(arena, list, empty, empty, empty));
+}
+
+
 //----------------------------------------------------------------------------------
 // Paths helpers
 //----------------------------------------------------------------------------------

src/util/strings.h

@@ -82,6 +82,23 @@ str32 str32_push_buffer(mem_arena* arena, u64 len, u32* buffer);
 str32 str32_push_copy(mem_arena* arena, str32 s);
 str32 str32_push_slice(mem_arena* arena, str32 s, u64 start, u64 end);
 
+typedef struct str32_elt
+{
+	list_elt listElt;
+	str32 string;
+} str32_elt;
+
+typedef struct str32_list
+{
+	list_info list;
+	u64 eltCount;
+	u64 len;
+} str32_list;
+
+void str32_list_push(mem_arena* arena, str32_list* list, str32 str);
+str32 str32_list_join(mem_arena* arena, str32_list list);
+str32_list str32_split(mem_arena* arena, str32 str, str32_list separators);
+
 //----------------------------------------------------------------------------------
 // Paths helpers
 //----------------------------------------------------------------------------------

todo.txt

@@ -3,14 +3,19 @@
 Shortlist
 ---------
 [x] let pass flat args in ui_size_push() and ui_box_set_size()
-[>>] separate style stacks
+[x] separate style stacks
+[x] animation time stack
 [>] margins? as part of size, or different styling stack?
-[>] animation time stack
+
 [ ] Let build code set target style directly, and animate from current to target
 [ ] filter styles stack by tag
 [ ] image backgrounds/gradients?
 [ ] animating open/close widgets?
 
+[.] Text box widget
+	[ ] Draw selection
+	[ ] Set cursor on click
+	[ ] Scroll to cursor
 
 Canvas Drawing
 --------------