rewrite time

implementations/Crafter.Graphics-WindowFramebuffer_wayland.cpp

@@ -0,0 +1,107 @@
+/*
+Crafter®.Graphics
+Copyright (C) 2025 Catcrafts®
+catcrafts.net
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License version 3.0 as published by the Free Software Foundation;
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+*/
+module;
+
+#include <wayland-client.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+module Crafter.Graphics:WindowFramebuffer_wayland_impl;
+import :WindowFramebuffer;
+import :Window;
+import :UiElement;
+import std;
+import :Types;
+import :Shm;
+import Crafter.Event;
+
+namespace Crafter {
+    void WindowFramebuffer::Create(std::uint_fast32_t width, std::uint_fast32_t height) {
+        this->width = width;
+        this->height = height;
+        int stride = width * 4;
+        int size = stride * height;
+
+        int fd = create_shm_file(size);
+        if (fd < 0) {
+            fprintf(stderr, "creating a buffer file for %d B failed: %m\n", size);
+        }
+
+        framebuffer = reinterpret_cast<Pixel_BU8_GU8_RU8_AU8*>(mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0));
+        if (framebuffer == MAP_FAILED) {
+            fprintf(stderr, "mmap failed: %m\n");
+            close(fd);
+        }
+
+        wl_shm_pool *pool = wl_shm_create_pool(window.shm, fd, size);
+        buffer = wl_shm_pool_create_buffer(pool, 0, width, height, stride, WL_SHM_FORMAT_ARGB8888);
+        wl_shm_pool_destroy(pool);
+        close(fd);
+
+        if (buffer == NULL) {
+            exit(EXIT_FAILURE);
+        }
+
+        wl_surface_attach(window.surface, buffer, 0, 0);
+        wl_surface_commit(window.surface);
+    }
+
+    void WindowFramebuffer::Resize(std::uint_fast32_t width, std::uint_fast32_t height) {
+        
+    }
+
+    void WindowFramebuffer::Destroy() {
+        wl_buffer_destroy(buffer);
+    }
+
+    void WindowFramebuffer::Render() {
+        std::vector<const UiElementBuffer*> drawOrder;
+        drawOrder.reserve(elements.size());
+        for (const UiElementBuffer* e : elements) drawOrder.push_back(e);
+        std::sort(drawOrder.begin(), drawOrder.end(), [](const UiElementBuffer* a, const UiElementBuffer* b){ return a->parent.z < b->parent.z; });
+
+        for(const UiElementBuffer* element : drawOrder) {
+            ScaleData data = ScaleElement(element->parent);
+            std::vector<Pixel_BU8_GU8_RU8_AU8> scaled(data.width*data.height);
+            element->DrawNearestNeighbour(scaled.data(), data.width, data.height);
+            for (std::int32_t x = data.x; x - data.x < data.width; x++) {
+                for (std::int32_t y = data.y; y - data.y < data.height; y++) {
+                    if (x >= 0 && x <  width && y >= 0 && y <  height) {
+                        Pixel_BU8_GU8_RU8_AU8& dst = framebuffer[y * width + x];
+                        const Pixel_BU8_GU8_RU8_AU8& src = scaled[(y - data.y) * data.width + (x - data.x)];
+
+                        float srcA = src.a / 255.0f;
+                        float dstA = dst.a / 255.0f;
+
+                        float outA = srcA + dstA * (1.0f - srcA);
+                        if (outA > 0.0f) {
+                            dst.r = static_cast<uint8_t>((src.r * srcA + dst.r * dstA * (1.0f - srcA)) / outA);
+                            dst.g = static_cast<uint8_t>((src.g * srcA + dst.g * dstA * (1.0f - srcA)) / outA);
+                            dst.b = static_cast<uint8_t>((src.b * srcA + dst.b * dstA * (1.0f - srcA)) / outA);
+                            dst.a = static_cast<uint8_t>(outA * 255);
+                        }
+                    }
+                }
+            }
+            //RenderElements(window, *element, data);
+        }
+    }
+}