Catcrafts/Crafter.Graphics
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webgpu support

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This commit is contained in:
Jorijn van der Graaf 2026-05-18 04:58:52 +02:00
commit dedf6b0467
22 changed files with 1656 additions and 324 deletions
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15
interfaces/Crafter.Graphics-Font.cppm
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@ -19,13 +19,8 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
module;
#ifndef CRAFTER_GRAPHICS_WINDOW_DOM
#include "../lib/stb_truetype.h"
#endif // !CRAFTER_GRAPHICS_WINDOW_DOM
export module Crafter.Graphics:Font;
#ifndef CRAFTER_GRAPHICS_WINDOW_DOM
import std;
namespace Crafter {
@ -36,7 +31,6 @@ namespace Crafter {
if (i >= text.size()) return 0;
std::uint8_t b0 = static_cast<std::uint8_t>(text[i]);
// Single-byte ASCII is the common path.
if (b0 < 0x80) { ++i; return b0; }
int extra;
@ -44,13 +38,13 @@ namespace Crafter {
if ((b0 & 0xE0) == 0xC0) { extra = 1; cp = b0 & 0x1F; }
else if ((b0 & 0xF0) == 0xE0) { extra = 2; cp = b0 & 0x0F; }
else if ((b0 & 0xF8) == 0xF0) { extra = 3; cp = b0 & 0x07; }
else { ++i; return 0xFFFD; } // continuation byte at start, or 5+-byte leader
else { ++i; return 0xFFFD; }
++i;
for (int k = 0; k < extra; ++k) {
if (i >= text.size()) return 0xFFFD;
std::uint8_t b = static_cast<std::uint8_t>(text[i]);
if ((b & 0xC0) != 0x80) return 0xFFFD; // missing continuation
if ((b & 0xC0) != 0x80) return 0xFFFD;
cp = (cp << 6) | (b & 0x3Fu);
++i;
}
@ -67,8 +61,7 @@ namespace Crafter {
Font(const std::filesystem::path& font);
std::uint32_t GetLineWidth(const std::string_view text, float size);
float LineHeight(float size);
float AscentPx(float size); // baseline offset from line-top
float ScaleForSize(float size); // stb's pixel-units-per-em factor
float AscentPx(float size);
float ScaleForSize(float size);
};
}
#endif // !CRAFTER_GRAPHICS_WINDOW_DOM