Mirrors/clay
1
0
Fork 0
mirror of https://github.com/nicbarker/clay.git synced 2026-02-06 12:48:49 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Updated the main.cpp file

Browse source
This commit is contained in:
ThatTanishqTak 2025-11-17 22:55:06 +00:00
parent 00deb78827
commit f110559639
2 changed files with 141 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

70
examples/cpp-project-example/main.cpp
View file

@ -1,21 +1,73 @@
#include <iostream>
#include <cstdio>
#include <cstdlib>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <wingdi.h>
#define CLAY_IMPLEMENTATION
#include "../../clay.h"
Clay_LayoutConfig layoutElement = Clay_LayoutConfig { .padding = {5} };
// Simple layout config with prefixed naming to match the MSVC-friendly style guide.
Clay_LayoutConfig s_LayoutElement = Clay_LayoutConfig{ .padding = {5} };
void HandleClayErrors(Clay_ErrorData errorData) {
// Win32-compatible font handle that can be reused by the text measuring callback.
static HFONT s_TextFont = static_cast<HFONT>(GetStockObject(DEFAULT_GUI_FONT));
// Bridge Clay's text measuring hook to GDI so layouts get accurate extents on Windows.
Clay_Dimensions HandleMeasureText(Clay_StringSlice text, Clay_TextElementConfig* config, void* userData)
{
(void)config; // Config is available for future font switching or styling.
HFONT* l_FontHandle = static_cast<HFONT*>(userData);
HFONT l_ResolvedFont = l_FontHandle != nullptr && *l_FontHandle != nullptr ? *l_FontHandle : s_TextFont;
HDC l_DeviceContext = GetDC(nullptr);
if (l_DeviceContext == nullptr)
{
return Clay_Dimensions{ 0, 0 };
}
HGDIOBJ l_PreviousFont = nullptr;
if (l_ResolvedFont != nullptr)
{
l_PreviousFont = SelectObject(l_DeviceContext, l_ResolvedFont);
}
SIZE l_TextSize{ 0, 0 };
int l_TextLength = static_cast<int>(text.length);
GetTextExtentPoint32A(l_DeviceContext, text.chars, l_TextLength, &l_TextSize);
if (l_PreviousFont != nullptr)
{
SelectObject(l_DeviceContext, l_PreviousFont);
}
ReleaseDC(nullptr, l_DeviceContext);
// Future improvement: swap GDI for DirectWrite or cache glyph metrics to avoid repeated calls.
return Clay_Dimensions{ static_cast<float>(l_TextSize.cx), static_cast<float>(l_TextSize.cy) };
}
void HandleClayErrors(Clay_ErrorData errorData)
{
printf("%s", errorData.errorText.chars);
}
int main(void) {
uint64_t totalMemorySize = Clay_MinMemorySize();
Clay_Arena clayMemory = Clay_CreateArenaWithCapacityAndMemory(totalMemorySize, (char *)malloc(totalMemorySize));
Clay_Initialize(clayMemory, Clay_Dimensions {1024,768}, Clay_ErrorHandler { HandleClayErrors });
int main(void)
{
uint64_t l_TotalMemorySize = Clay_MinMemorySize();
Clay_Arena l_ClayMemory = Clay_CreateArenaWithCapacityAndMemory(l_TotalMemorySize, static_cast<char*>(malloc(l_TotalMemorySize)));
// Initialize the Clay context and immediately provide a Windows-friendly text measure callback.
Clay_Initialize(l_ClayMemory, Clay_Dimensions{ 1024, 768 }, Clay_ErrorHandler{ HandleClayErrors });
Clay_SetMeasureTextFunction(HandleMeasureText, &s_TextFont);
// The measure function lets Clay compute text bounds before laying out widgets.
Clay_BeginLayout();
CLAY_AUTO_ID({ .layout = layoutElement, .backgroundColor = {255,255,255,0} }) {
CLAY_AUTO_ID({ .layout = s_LayoutElement, .backgroundColor = {255,255,255,0} })
{
CLAY_TEXT(CLAY_STRING(""), CLAY_TEXT_CONFIG({ .fontId = 0 }));
}
Clay_EndLayout();
return 0;
}
}