mirror of
https://github.com/nicbarker/clay.git
synced 2026-02-06 12:48:49 +00:00
Significantly improves the stability, performance, and visual quality of the ncurses renderer.
**Renderer Improvements (`clay_renderer_ncurses.c`):**
* **Flicker Reduction**:
* Removed `erase()` call at the start of the frame to enable differential rendering.
* Implemented "Dirty Check" optimizations for Rectangles, Borders, and Text. The renderer now reads the existing screen content (using `mvinch`, `mvin_wch`, `mvin_wchnstr`) and only issues draw commands if the content or color differs.
* Hardened Rectangle dirty check to mask out volatile attributes (comparing only `A_CHARTEXT | A_COLOR`), preventing false-positive redraws caused by internal terminal flags.
* **Memory Safety**:
* Fixed internal ncurses memory leaks by calling `delscreen(set_term(NULL))` in `Clay_Ncurses_Terminate` to properly free the default screen wrapper.
* **Visual Features**:
* Added support for **Rounded Corners**: Borders with `cornerRadius > 0` now render using Unicode arc characters (`╭`, `╮`, `╯`, `╰`).
* Upgraded standard borders to use full Unicode box-drawing characters.
**Example Application Updates (`ncurses-example/main.c`):**
* **Layout Stability**:
* Refactored all layout dimensions and gaps to use `CLAY_NCURSES_CELL_WIDTH` (8) and `CLAY_NCURSES_CELL_HEIGHT` (16) macros, ensuring strict grid alignment.
* Fixed vertical jitter in "Profile Icon" and text headers by enforcing exact height multiples and top-alignment, eliminating sub-pixel rounding errors during scroll.
* **New UI Elements**:
* Added a **Floating Help Modal** (toggled via 'H') to demonstrate Z-ordering and localized input handling.
* Added "Server Status" progress bars to the Sidebar to demonstrate percent-based sizing and colored rectangles.
* Added "Mixed Border" examples to the Sidebar to showcase the new rounded corner capabilities.
* Added "Black" background constant usage for cleaner code.
391 lines
16 KiB
C
391 lines
16 KiB
C
#define CLAY_IMPLEMENTATION
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#include "../../clay.h"
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#include "../../renderers/ncurses/clay_renderer_ncurses.c"
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#include <time.h> // for nanosleep
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#define DEFAULT_SCROLL_DELTA 3.0f
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#define BLACK_BG_COLOR {20, 20, 20, 255}
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// State for the example
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typedef struct {
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bool sidebarOpen;
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float scrollDelta;
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bool showHelp;
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bool shouldQuit;
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} AppState;
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static AppState appState = {
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.sidebarOpen = true,
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.scrollDelta = 0.0f,
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.shouldQuit = false,
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.showHelp = false
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};
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void HandleInput() {
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// Reset delta per frame
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appState.scrollDelta = 0.0f;
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int ch;
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while ((ch = getch()) != ERR) {
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if (ch == 'q' || ch == 'Q') {
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appState.shouldQuit = true;
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}
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if (ch == 's' || ch == 'S') {
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appState.sidebarOpen = !appState.sidebarOpen;
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}
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if (ch == 'h' || ch == 'H') {
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appState.showHelp = !appState.showHelp;
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}
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if (ch == KEY_UP) {
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appState.scrollDelta += DEFAULT_SCROLL_DELTA;
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}
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if (ch == KEY_DOWN) {
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appState.scrollDelta -= DEFAULT_SCROLL_DELTA;
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}
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}
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}
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void RenderProgressBar(Clay_String label, float percent, Clay_Color color) {
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CLAY(CLAY_ID_LOCAL("ProgressBarWrapper"), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = CLAY_NCURSES_CELL_HEIGHT }
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}) {
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CLAY(CLAY_ID_LOCAL("LabelRow"), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) }, .layoutDirection = CLAY_LEFT_TO_RIGHT, .childGap = CLAY_NCURSES_CELL_HEIGHT, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER} }
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}) {
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CLAY_TEXT(label, CLAY_TEXT_CONFIG({ .textColor = {200, 200, 200, 255}, .fontSize = 16 }));
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}
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CLAY(CLAY_ID_LOCAL("BarBackground"), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_HEIGHT) } },
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.backgroundColor = {40, 40, 40, 255},
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.cornerRadius = {1}
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}) {
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CLAY(CLAY_ID_LOCAL("BarFill"), {
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.layout = { .sizing = { CLAY_SIZING_PERCENT(percent), CLAY_SIZING_GROW() } },
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.backgroundColor = color,
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.cornerRadius = {1}
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}) {}
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}
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}
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}
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void RenderServerStatus() {
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CLAY(CLAY_ID("ServerStatus"), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) },
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.padding = {16, 16, 16, 16},
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.childGap = 16,
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.layoutDirection = CLAY_TOP_TO_BOTTOM
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},
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.backgroundColor = {25, 25, 25, 255},
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.border = { .color = {60, 60, 60, 255}, .width = {2, 2, 2, 2} }
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}) {
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CLAY_TEXT(CLAY_STRING("SERVER STATUS"), CLAY_TEXT_CONFIG({ .textColor = {255, 255, 255, 255} }));
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RenderProgressBar(CLAY_STRING("CPU"), 0.45f, (Clay_Color){0, 200, 0, 255});
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RenderProgressBar(CLAY_STRING("Mem"), 0.82f, (Clay_Color){200, 150, 0, 255});
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}
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}
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void RenderHelpModal() {
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if (!appState.showHelp) return;
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CLAY(CLAY_ID("HelpModalOverlay"), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_GROW() }, .childAlignment = {CLAY_ALIGN_X_CENTER, CLAY_ALIGN_Y_CENTER} },
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.floating = { .zIndex = 100, .attachTo = CLAY_ATTACH_TO_ROOT, .pointerCaptureMode = CLAY_POINTER_CAPTURE_MODE_CAPTURE },
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.backgroundColor = {0, 0, 0, 150}
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}) {
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CLAY(CLAY_ID("HelpModalWindow"), {
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.layout = {
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.sizing = { CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_WIDTH * 60), CLAY_SIZING_FIT(0) },
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.padding = CLAY_PADDING_ALL(CLAY_NCURSES_CELL_HEIGHT),
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.childGap = CLAY_NCURSES_CELL_WIDTH,
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.layoutDirection = CLAY_TOP_TO_BOTTOM
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},
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.backgroundColor = {30, 30, 30, 255},
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.cornerRadius = {4},
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.border = { .color = {255, 255, 255, 255}, .width = {2, 2, 2, 2} }
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}) {
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CLAY_TEXT(CLAY_STRING("Ncurses Example Help"), CLAY_TEXT_CONFIG({ .textColor = {255, 255, 255, 255} }));
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CLAY(CLAY_ID("HelpLine1"), { .layout = { .sizing = {CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0)} } }) {
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CLAY_TEXT(CLAY_STRING("Keys:"), CLAY_TEXT_CONFIG({ .textColor = {200, 200, 0, 255} }));
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}
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CLAY_TEXT(CLAY_STRING("- ARROW KEYS: Scroll Feed"), CLAY_TEXT_CONFIG({ .textColor = {200, 200, 200, 255} }));
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CLAY_TEXT(CLAY_STRING("- S: Toggle Sidebar"), CLAY_TEXT_CONFIG({ .textColor = {200, 200, 200, 255} }));
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CLAY_TEXT(CLAY_STRING("- H: Toggle This Help"), CLAY_TEXT_CONFIG({ .textColor = {200, 200, 200, 255} }));
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CLAY_TEXT(CLAY_STRING("- Q: Quit Application"), CLAY_TEXT_CONFIG({ .textColor = {200, 200, 200, 255} }));
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CLAY(CLAY_ID("HelpCloseTip"), { .layout = { .sizing = {CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0)}, .padding = {.top = 16} } }) {
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CLAY_TEXT(CLAY_STRING("Press 'H' to close."), CLAY_TEXT_CONFIG({ .textColor = {100, 100, 100, 255} }));
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}
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}
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}
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}
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void RenderSidebar() {
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if (!appState.sidebarOpen) return;
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CLAY(CLAY_ID("Sidebar"), {
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.layout = {
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.sizing = { CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_WIDTH * 30), CLAY_SIZING_GROW() },
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.padding = CLAY_PADDING_ALL(CLAY_NCURSES_CELL_HEIGHT),
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.childGap = CLAY_NCURSES_CELL_HEIGHT,
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.layoutDirection = CLAY_TOP_TO_BOTTOM
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},
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.backgroundColor = {20, 20, 20, 255},
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.border = { .color = {100, 100, 100, 255}, .width = { .right = 2 } } // Lighter Grey Border
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}) {
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CLAY_TEXT(CLAY_STRING("SIDEBAR"), CLAY_TEXT_CONFIG({
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.textColor = {255, 255, 0, 255} // Bright Yellow
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}));
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RenderServerStatus();
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CLAY(CLAY_ID("SidebarItem1"), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_HEIGHT * 2) } },
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.backgroundColor = BLACK_BG_COLOR
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}) {
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CLAY_TEXT(CLAY_STRING(" > Item 1 🌍"), CLAY_TEXT_CONFIG({ .textColor = {0, 255, 255, 255} }));
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}
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CLAY(CLAY_ID("SidebarItem2"), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_HEIGHT * 2) } },
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.backgroundColor = BLACK_BG_COLOR
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}) {
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CLAY_TEXT(CLAY_STRING(" > Item 2 🌐"), CLAY_TEXT_CONFIG({ .textColor = {255, 255, 255, 255} }));
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}
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CLAY(CLAY_ID("SidebarItemMixed1"), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_HEIGHT * 3) },
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.childAlignment = { .y = CLAY_ALIGN_Y_CENTER }
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},
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.backgroundColor = {20, 20, 20, 255},
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.cornerRadius = { .topLeft = 8 },
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.border = { .color = {255, 100, 100, 255}, .width = {2, 2, 2, 2} }
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}) {
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CLAY_TEXT(CLAY_STRING(" > TL Round"), CLAY_TEXT_CONFIG({ .textColor = {255, 100, 100, 255} }));
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}
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CLAY(CLAY_ID("SidebarItemMixed2"), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_HEIGHT * 3) },
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.childAlignment = { .y = CLAY_ALIGN_Y_CENTER }
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},
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.backgroundColor = {20, 20, 20, 255},
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.cornerRadius = { .topLeft = 8, .bottomRight = 8 },
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.border = { .color = {100, 255, 100, 255}, .width = {2, 2, 2, 2} }
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}) {
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CLAY_TEXT(CLAY_STRING(" > Diagonal"), CLAY_TEXT_CONFIG({ .textColor = {100, 255, 100, 255} }));
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}
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CLAY(CLAY_ID("SidebarItemMixed3"), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_HEIGHT * 3) },
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.childAlignment = { .y = CLAY_ALIGN_Y_CENTER }
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},
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.backgroundColor = {20, 20, 20, 255},
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.cornerRadius = { .topLeft = 8, .topRight = 8 },
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.border = { .color = {100, 100, 255, 255}, .width = {2, 2, 2, 2} }
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}) {
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CLAY_TEXT(CLAY_STRING(" > Top Round"), CLAY_TEXT_CONFIG({ .textColor = {100, 100, 255, 255} }));
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}
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}
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}
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// Helpers for "Realistic" Data
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const char* NAMES[] = {
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"Alice",
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"Bob",
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"Charlie",
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"Diana",
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"Ethan",
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"Fiona",
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"George",
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"Hannah"
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};
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const char* TITLES[] = {
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"Just released a new library!",
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"Thoughts on C programming?",
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"Check out this cool algorithm",
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"Why I love Ncurses",
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"Clay UI is pretty flexible",
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"Debugging segfaults all day...",
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"Coffee break time ☕",
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"Anyone going to the conf?"
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};
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const char* LOREM[] = {
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"Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
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"Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.",
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"Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.",
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"Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.",
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"Excepteur sint occaecat cupidatat non proident, sunt in culpa."
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};
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void RenderPost(int index) {
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CLAY(CLAY_IDI("Post", index), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) },
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.padding = CLAY_PADDING_ALL(CLAY_NCURSES_CELL_HEIGHT),
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.childGap = CLAY_NCURSES_CELL_HEIGHT,
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.layoutDirection = CLAY_TOP_TO_BOTTOM
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},
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.backgroundColor = BLACK_BG_COLOR,
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.cornerRadius = {1},
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.border = { .color = {80, 80, 80, 255}, .width = {2, 2, 2, 2} }
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}) {
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// Post Header: Avatar + Name + Time
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CLAY(CLAY_IDI("PostHeader", index), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) },
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.childGap = CLAY_NCURSES_CELL_WIDTH * 2,
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.childAlignment = { .y = CLAY_ALIGN_Y_TOP },
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.layoutDirection = CLAY_LEFT_TO_RIGHT
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}
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}) {
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// Avatar
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CLAY(CLAY_IDI("Avatar", index), {
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.layout = { .sizing = { CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_WIDTH * 4), CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_HEIGHT * 2) } },
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.backgroundColor = { (index * 50) % 255, (index * 80) % 255, (index * 30) % 255, 255 },
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.cornerRadius = {1}
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}) {}
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// Name & Title
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CLAY(CLAY_IDI("AuthorInfo", index), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) }, .layoutDirection = CLAY_TOP_TO_BOTTOM, .childGap = 0 }
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}) {
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Clay_String name = { .length = strlen(NAMES[index % 8]), .chars = NAMES[index % 8] };
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Clay_String title = { .length = strlen(TITLES[index % 8]), .chars = TITLES[index % 8] };
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CLAY_TEXT(name, CLAY_TEXT_CONFIG({ .textColor = {255, 255, 255, 255} }));
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CLAY_TEXT(title, CLAY_TEXT_CONFIG({ .textColor = {150, 150, 150, 255} }));
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}
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}
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// Post Body
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CLAY(CLAY_IDI("PostBody", index), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) }, .padding = { .top = CLAY_NCURSES_CELL_HEIGHT, .bottom = CLAY_NCURSES_CELL_HEIGHT } }
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}) {
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Clay_String lorem = { .length = strlen(LOREM[index % 5]), .chars = LOREM[index % 5] };
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CLAY_TEXT(lorem, CLAY_TEXT_CONFIG({ .textColor = {200, 200, 200, 255} }));
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}
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// Post Actions
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CLAY(CLAY_IDI("PostActions", index), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) }, .childGap = CLAY_NCURSES_CELL_HEIGHT, .layoutDirection = CLAY_LEFT_TO_RIGHT }
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}) {
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CLAY_TEXT(CLAY_STRING("[ Like ]"), CLAY_TEXT_CONFIG({ .textColor = {0, 255, 0, 255} })); // Bright Green
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CLAY_TEXT(CLAY_STRING("[ Comment ]"), CLAY_TEXT_CONFIG({ .textColor = {0, 100, 255, 255} })); // Bright Blue
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CLAY_TEXT(CLAY_STRING("[ Share ]"), CLAY_TEXT_CONFIG({ .textColor = {255, 0, 0, 255} })); // Bright Red
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}
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}
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}
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void RenderContent() {
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CLAY(CLAY_ID("ContentArea"), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_GROW() },
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.padding = CLAY_PADDING_ALL(CLAY_NCURSES_CELL_HEIGHT),
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.childGap = CLAY_NCURSES_CELL_HEIGHT,
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.layoutDirection = CLAY_TOP_TO_BOTTOM
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},
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.backgroundColor = BLACK_BG_COLOR
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}) {
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// Sticky Header
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CLAY(CLAY_ID("Header"), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIXED(CLAY_NCURSES_CELL_HEIGHT * 3) }, // 3 cells high
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.padding = { .left = CLAY_NCURSES_CELL_WIDTH * 2, .right=CLAY_NCURSES_CELL_WIDTH * 2 },
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.childAlignment = { .y = CLAY_ALIGN_Y_CENTER }
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},
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.backgroundColor = BLACK_BG_COLOR,
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.border = { .color = {0, 100, 255, 255}, .width = { .bottom = 1 } }
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}) {
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CLAY_TEXT(CLAY_STRING("Clay Social Feed"), CLAY_TEXT_CONFIG({ .textColor = {255, 255, 255, 255} }));
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}
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// Scroll Viewport
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// We use SIZING_GROW for height so it fills the remaining screen space.
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CLAY(CLAY_ID("Viewport"), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_GROW() },
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.padding = { .top = 8, .bottom = 8 }
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},
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.clip = { .vertical = true, .childOffset = Clay_GetScrollOffset() },
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.backgroundColor = BLACK_BG_COLOR
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}) {
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CLAY(CLAY_ID("FeedList"), {
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.layout = {
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.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_FIT(0) }, // Fit height to content (allows it to be taller than viewport)
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.childGap = 16,
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.layoutDirection = CLAY_TOP_TO_BOTTOM
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}
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}) {
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// Get first item pos if possible
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Clay_ElementData item0 = Clay_GetElementData(CLAY_IDI("Post", 0));
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for (int i = 0; i < 50; ++i) { // 50 Posts
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RenderPost(i);
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}
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CLAY_TEXT(CLAY_STRING("--- End of Feed ---"), CLAY_TEXT_CONFIG({ .textColor = {140, 140, 140, 255} }));
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}
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}
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CLAY_TEXT(CLAY_STRING("Controls: ARROW UP/DOWN to Scroll | Q to Quit | S to Toggle Sidebar"), CLAY_TEXT_CONFIG({ .textColor = {120, 120, 120, 255} }));
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}
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}
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void RenderMainLayout() {
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CLAY(CLAY_ID("Root"), {
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.layout = { .sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_GROW() }, .layoutDirection = CLAY_LEFT_TO_RIGHT },
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}) {
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RenderSidebar();
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RenderContent();
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RenderHelpModal();
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}
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}
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int main() {
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uint32_t minMemory = Clay_MinMemorySize();
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Clay_Arena arena = Clay_CreateArenaWithCapacityAndMemory(minMemory, malloc(minMemory));
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Clay_Initialize(arena, (Clay_Dimensions){0,0}, (Clay_ErrorHandler){NULL});
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Clay_SetMeasureTextFunction(Clay_Ncurses_MeasureText, NULL);
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Clay_Ncurses_Initialize();
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// Non-blocking input
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timeout(0);
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while(!appState.shouldQuit) {
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HandleInput();
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Clay_Dimensions dims = Clay_Ncurses_GetLayoutDimensions();
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Clay_SetLayoutDimensions(dims);
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// Handle Scroll Logic
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Clay_ElementId viewportId = CLAY_ID("Viewport");
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Clay_ElementData viewportData = Clay_GetElementData(viewportId);
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|
if (viewportData.found) {
|
|
Clay_Vector2 center = {
|
|
viewportData.boundingBox.x + viewportData.boundingBox.width / 2,
|
|
viewportData.boundingBox.y + viewportData.boundingBox.height / 2
|
|
};
|
|
Clay_SetPointerState(center, false);
|
|
|
|
Clay_UpdateScrollContainers(true, (Clay_Vector2){0, appState.scrollDelta}, 0.016f);
|
|
}
|
|
|
|
Clay_BeginLayout();
|
|
RenderMainLayout();
|
|
Clay_RenderCommandArray commands = Clay_EndLayout();
|
|
|
|
Clay_Ncurses_Render(commands);
|
|
|
|
struct timespec ts = { .tv_sec = 0, .tv_nsec = 16000 * 1000 };
|
|
nanosleep(&ts, NULL);
|
|
}
|
|
|
|
Clay_Ncurses_Terminate();
|
|
free(arena.memory);
|
|
return 0;
|
|
}
|