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Reapply "Death to C++"

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This reverts commit 13f856cfbc.
This commit is contained in:
Max Amundsen
2026-03-12 16:30:04 -04:00
parent d5d2f6db8e
commit 8695f69282
80 changed files with 5671 additions and 39268 deletions
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239
src/ui/ui_core.c Normal file
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// ui_core.c - Clay wrapper implementation
// CLAY_IMPLEMENTATION must be defined exactly once before including clay.h.
// In the unity build, ui_core.h (which includes clay.h) has #pragma once,
// so we include clay.h directly here first to get the implementation compiled.
#include <stdlib.h>
// MSVC: stub out Clay's debug view (uses CLAY() macros MSVC can't compile in C)
#ifdef _MSC_VER
#define CLAY_DISABLE_DEBUG_VIEW
#endif
#define CLAY_IMPLEMENTATION
#include "clay.h"
// MSVC C mode: bypass Clay's wrapper struct pattern for designated initializers.
// Must come after clay.h so CLAY__CONFIG_WRAPPER is defined, then we override it.
#ifdef _MSC_VER
#undef CLAY__CONFIG_WRAPPER
#define CLAY__CONFIG_WRAPPER(type, ...) ((type) { __VA_ARGS__ })
#endif
#include "ui/ui_core.h"
////////////////////////////////
// UI scale global
F32 g_ui_scale = 1.0f;
////////////////////////////////
// Theme global
UI_Theme g_theme = {0};
S32 g_theme_id = 0;
void ui_set_theme(S32 theme_id) {
g_theme_id = theme_id;
switch (theme_id) {
default:
case 0: // Dark
g_theme.bg_dark = (Clay_Color){ 26, 26, 26, 255};
g_theme.bg_medium = (Clay_Color){ 36, 36, 36, 255};
g_theme.bg_light = (Clay_Color){ 46, 46, 46, 255};
g_theme.bg_lighter = (Clay_Color){ 54, 54, 54, 255};
g_theme.border = (Clay_Color){ 52, 52, 52, 255};
g_theme.text = (Clay_Color){220, 220, 220, 255};
g_theme.text_dim = (Clay_Color){105, 105, 105, 255};
g_theme.accent = (Clay_Color){ 87, 138, 176, 255};
g_theme.accent_hover = (Clay_Color){102, 153, 191, 255};
g_theme.button_text = (Clay_Color){224, 224, 224, 255};
g_theme.disabled_bg = (Clay_Color){ 44, 44, 44, 255};
g_theme.disabled_text = (Clay_Color){ 90, 90, 90, 255};
g_theme.header_bg = (Clay_Color){ 46, 46, 46, 255};
g_theme.title_bar = (Clay_Color){ 22, 22, 22, 255};
g_theme.scrollbar_bg = (Clay_Color){ 22, 22, 22, 255};
g_theme.scrollbar_grab = (Clay_Color){ 58, 58, 58, 255};
g_theme.shadow = (Clay_Color){ 0, 0, 0, 30};
g_theme.tab_active_top = (Clay_Color){ 70, 120, 160, 255};
g_theme.tab_active_bottom= (Clay_Color){ 30, 55, 80, 255};
g_theme.tab_inactive = (Clay_Color){ 40, 40, 40, 255};
g_theme.tab_inactive_hover= (Clay_Color){ 50, 50, 50, 255};
g_theme.tab_text = (Clay_Color){240, 240, 240, 255};
g_theme.corner_radius = 4.0f;
break;
case 1: // Light
g_theme.bg_dark = (Clay_Color){195, 193, 190, 255};
g_theme.bg_medium = (Clay_Color){212, 210, 207, 255};
g_theme.bg_light = (Clay_Color){225, 223, 220, 255};
g_theme.bg_lighter = (Clay_Color){232, 230, 227, 255};
g_theme.border = (Clay_Color){178, 176, 173, 255};
g_theme.text = (Clay_Color){ 35, 33, 30, 255};
g_theme.text_dim = (Clay_Color){115, 113, 108, 255};
g_theme.accent = (Clay_Color){ 50, 110, 170, 255};
g_theme.accent_hover = (Clay_Color){ 65, 125, 185, 255};
g_theme.button_text = (Clay_Color){255, 255, 255, 255};
g_theme.disabled_bg = (Clay_Color){185, 183, 180, 255};
g_theme.disabled_text = (Clay_Color){145, 143, 140, 255};
g_theme.header_bg = (Clay_Color){202, 200, 197, 255};
g_theme.title_bar = (Clay_Color){202, 200, 197, 255};
g_theme.scrollbar_bg = (Clay_Color){202, 200, 197, 255};
g_theme.scrollbar_grab = (Clay_Color){168, 166, 163, 255};
g_theme.shadow = (Clay_Color){ 0, 0, 0, 18};
g_theme.tab_active_top = (Clay_Color){ 70, 130, 180, 255};
g_theme.tab_active_bottom= (Clay_Color){ 50, 100, 150, 255};
g_theme.tab_inactive = (Clay_Color){205, 203, 200, 255};
g_theme.tab_inactive_hover= (Clay_Color){195, 193, 190, 255};
g_theme.tab_text = (Clay_Color){255, 255, 255, 255};
g_theme.corner_radius = 4.0f;
break;
}
}
////////////////////////////////
// Accent palette
S32 g_accent_id = 0;
void ui_set_accent(S32 accent_id) {
g_accent_id = accent_id;
B32 dark = (g_theme_id == 0);
// Each palette: accent, accent_hover, tab_top, tab_bottom, button_text, tab_text
typedef struct AccentColors {
Clay_Color accent, accent_hover, tab_top, tab_bottom, button_text, tab_text;
} AccentColors;
// Dark-mode palettes
static const AccentColors dark_palettes[] = {
// 0: Blue
{ {87,138,176,255}, {102,153,191,255}, {70,120,160,255}, {30,55,80,255}, {224,224,224,255}, {240,240,240,255} },
// 1: Turquoise
{ {60,160,155,255}, {75,175,170,255}, {50,140,135,255}, {25,70,68,255}, {224,224,224,255}, {240,240,240,255} },
// 2: Orange
{ {200,130,50,255}, {215,145,65,255}, {190,120,40,255}, {100,60,20,255}, {240,240,240,255}, {240,240,240,255} },
// 3: Purple
{ {130,100,180,255}, {145,115,195,255}, {120,90,170,255}, {60,45,85,255}, {224,224,224,255}, {240,240,240,255} },
// 4: Pink
{ {185,95,140,255}, {200,110,155,255}, {175,85,130,255}, {88,42,65,255}, {240,240,240,255}, {240,240,240,255} },
// 5: Red
{ {190,75,75,255}, {205,90,90,255}, {180,65,65,255}, {90,32,32,255}, {240,240,240,255}, {240,240,240,255} },
// 6: Green
{ {80,155,80,255}, {95,170,95,255}, {70,140,70,255}, {35,70,35,255}, {240,240,240,255}, {240,240,240,255} },
};
// Light-mode palettes (slightly more saturated for contrast on light bg)
static const AccentColors light_palettes[] = {
// 0: Blue
{ {50,110,170,255}, {65,125,185,255}, {70,130,180,255}, {50,100,150,255}, {255,255,255,255}, {255,255,255,255} },
// 1: Turquoise
{ {30,140,135,255}, {45,155,150,255}, {40,150,145,255}, {25,115,110,255}, {255,255,255,255}, {255,255,255,255} },
// 2: Orange
{ {190,115,25,255}, {205,130,40,255}, {195,120,30,255}, {155,90,15,255}, {255,255,255,255}, {255,255,255,255} },
// 3: Purple
{ {110,75,170,255}, {125,90,185,255}, {115,80,175,255}, {85,55,140,255}, {255,255,255,255}, {255,255,255,255} },
// 4: Pink
{ {175,70,125,255}, {190,85,140,255}, {180,75,130,255}, {140,50,100,255}, {255,255,255,255}, {255,255,255,255} },
// 5: Red
{ {185,55,55,255}, {200,70,70,255}, {190,60,60,255}, {150,40,40,255}, {255,255,255,255}, {255,255,255,255} },
// 6: Green
{ {55,140,55,255}, {70,155,70,255}, {60,145,60,255}, {40,110,40,255}, {255,255,255,255}, {255,255,255,255} },
};
S32 idx = accent_id;
if (idx < 0) idx = 0;
if (idx > 6) idx = 6;
const AccentColors *c = dark ? &dark_palettes[idx] : &light_palettes[idx];
g_theme.accent = c->accent;
g_theme.accent_hover = c->accent_hover;
g_theme.tab_active_top = c->tab_top;
g_theme.tab_active_bottom = c->tab_bottom;
g_theme.button_text = c->button_text;
g_theme.tab_text = c->tab_text;
}
////////////////////////////////
// Clay error handler
static void clay_error_handler(Clay_ErrorData error) {
char buf[512];
S32 len = error.errorText.length < 511 ? error.errorText.length : 511;
memcpy(buf, error.errorText.chars, len);
buf[len] = '\0';
fprintf(stderr, "[Clay Error] %s\n", buf);
}
////////////////////////////////
// Clay text measurement bridge
// Clay calls this; we forward to the app's UI_MeasureTextFn
static UI_Context *g_measure_ctx = NULL;
static Clay_Dimensions clay_measure_text(Clay_StringSlice text, Clay_TextElementConfig *config, void *user_data) {
UI_Context *ctx = (UI_Context *)user_data;
if (!ctx || !ctx->measure_text_fn || text.length == 0) {
return (Clay_Dimensions){0, (F32)config->fontSize};
}
Vec2F32 result = ctx->measure_text_fn(text.chars, text.length, (F32)config->fontSize, ctx->measure_text_user_data);
return (Clay_Dimensions){result.x, result.y};
}
////////////////////////////////
// Lifecycle
UI_Context *ui_create(F32 viewport_w, F32 viewport_h) {
UI_Context *ctx = (UI_Context *)calloc(1, sizeof(UI_Context));
U32 min_memory = Clay_MinMemorySize();
ctx->clay_memory = malloc(min_memory);
Clay_Arena clay_arena = Clay_CreateArenaWithCapacityAndMemory(min_memory, ctx->clay_memory);
Clay_ErrorHandler err_handler = {0};
err_handler.errorHandlerFunction = clay_error_handler;
err_handler.userData = ctx;
ctx->clay_ctx = Clay_Initialize(clay_arena,
(Clay_Dimensions){viewport_w, viewport_h},
err_handler);
Clay_SetMeasureTextFunction(clay_measure_text, ctx);
return ctx;
}
void ui_destroy(UI_Context *ctx) {
if (!ctx) return;
free(ctx->clay_memory);
free(ctx);
}
void ui_begin_frame(UI_Context *ctx, F32 viewport_w, F32 viewport_h,
Vec2F32 mouse_pos, B32 mouse_down,
Vec2F32 scroll_delta, F32 dt)
{
g_measure_ctx = ctx;
Clay_SetCurrentContext(ctx->clay_ctx);
Clay_SetLayoutDimensions((Clay_Dimensions){viewport_w, viewport_h});
Clay_SetPointerState((Clay_Vector2){mouse_pos.x, mouse_pos.y}, mouse_down != 0);
Clay_UpdateScrollContainers(false, (Clay_Vector2){scroll_delta.x, scroll_delta.y}, dt);
Clay_BeginLayout();
}
Clay_RenderCommandArray ui_end_frame(UI_Context *ctx) {
(void)ctx;
return Clay_EndLayout();
}
void ui_set_measure_text_fn(UI_Context *ctx, UI_MeasureTextFn fn, void *user_data) {
ctx->measure_text_fn = fn;
ctx->measure_text_user_data = user_data;
}
Vec2F32 ui_measure_text(const char *text, S32 length, F32 font_size) {
if (!g_measure_ctx || !g_measure_ctx->measure_text_fn || length == 0)
return v2f32(0, font_size);
return g_measure_ctx->measure_text_fn(text, length, font_size, g_measure_ctx->measure_text_user_data);
}