feat: attempt to register a callback, but it does not work!

hyprlandd.conf

@@ -1,7 +1,11 @@
 monitor=,preferred,auto,auto
 
-# exec_once=kitty --hold sh -c "hyprctl plugin load $(pwd)/build/src/libhyprwiggle.so"
+# TODO: does not work!!
+exec-once=sh -c "hyprctl plugin load $(pwd)/build/src/libhyprwiggle.so"
 
+debug {
+    disable_logs = false
+}
 general {
     gaps_in = 5
     gaps_out = 20

src/main.cpp

@@ -1,20 +1,132 @@
+#include "src/helpers/math/Math.hpp"
+#include <hyprgraphics/color/Color.hpp>
 #define WLR_USE_UNSTABLE
 
 #include "globals.hpp"
 // version.hpp will be generated by meson
 #include "version.hpp"
 
-// #include <hyprland/src/Window.hpp>
 #include <hyprland/src/Compositor.hpp>
+#include <hyprland/src/render/Renderer.hpp>
+#include <hyprland/src/render/Transformer.hpp>
+#include <hyprland/src/desktop/Window.hpp>
 
 #include <unistd.h>
-#include <thread>
 
 // Do NOT change this function.
 APICALL EXPORT std::string PLUGIN_API_VERSION() {
     return HYPRLAND_API_VERSION;
 }
 
+class CWindowTransformer : public IWindowTransformer {
+   public:
+    virtual CFramebuffer* transform(CFramebuffer* in);
+    virtual void preWindowRender(CSurfacePassElement::SRenderData* pRenderData);
+
+   private:
+    float rot = 0;
+};
+
+std::vector<CWindowTransformer*> ptrs;
+Vector2D oldPos, newPos;
+
+void renderTex(CBox monbox, CTexture& tex, float rot) {
+    if (g_pHyprOpenGL->m_renderData.damage.empty()) return;
+
+    CBox newBox = monbox.scale(g_pHyprOpenGL->m_renderData.renderModif.combinedScale());
+    g_pHyprOpenGL->m_renderData.renderModif.applyToBox(newBox);
+
+    Mat3x3 matrix   = g_pHyprOpenGL->m_renderData.monitorProjection.projectBox(monbox, wlTransformToHyprutils(invertTransform(WL_OUTPUT_TRANSFORM_NORMAL)), monbox.rot);
+    Mat3x3 glMatrix = g_pHyprOpenGL->m_renderData.projection.copy().multiply(matrix);
+
+    SShader* shader = &g_pHyprOpenGL->m_shaders->m_shPASSTHRURGBA;
+
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(tex.m_target, tex.m_texID);
+
+    glUseProgram(shader->program);
+
+#ifndef GLES2
+    glUniformMatrix3fv(shader->proj, 1, GL_TRUE, glMatrix.getMatrix().data());
+#else
+    glMatrix.transpose();
+    glUniformMatrix3fv(shader->proj, 1, GL_FALSE, glMatrix.getMatrix().data());
+#endif
+    glUniform1i(shader->tex, 0);
+
+    const auto TOPLEFT = Vector2D(newBox.x, newBox.y);
+    const auto FULLSIZE = Vector2D(newBox.width, newBox.height);
+
+    glUniform2f(shader->topLeft, TOPLEFT.x, TOPLEFT.y);
+    glUniform2f(shader->fullSize, FULLSIZE.x, FULLSIZE.y);
+    glUniform1f(shader->radius, 0);
+
+    glUniform1i(shader->discardOpaque, 0);
+    glUniform1i(shader->discardAlpha, 0);
+
+    glUniform1f(shader->alpha, 1);
+
+    glVertexAttribPointer(shader->posAttrib, 2, GL_FLOAT, GL_FALSE, 0, fullVerts);
+    glVertexAttribPointer(shader->texAttrib, 2, GL_FLOAT, GL_FALSE, 0, fullVerts);
+
+    glEnableVertexAttribArray(shader->posAttrib);
+    glEnableVertexAttribArray(shader->texAttrib);
+
+    for (auto& RECT : g_pHyprOpenGL->m_renderData.damage.getRects()) {
+        g_pHyprOpenGL->scissor(&RECT);
+        glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+    }
+
+    g_pHyprOpenGL->scissor(nullptr);
+
+    glDisableVertexAttribArray(shader->posAttrib);
+    glDisableVertexAttribArray(shader->texAttrib);
+
+    glBindTexture(tex.m_target, 0);
+}
+
+void CWindowTransformer::preWindowRender(CSurfacePassElement::SRenderData* pRenderData) {
+    oldPos = pRenderData->pos;
+
+    pRenderData->pos.x = pRenderData->pMonitor->m_size.x / 2.f - pRenderData->w / 2.f;
+    pRenderData->pos.y = pRenderData->pMonitor->m_size.y / 2.f - pRenderData->h / 2.f;
+
+    newPos = {(double)pRenderData->pos.x, (double)pRenderData->pos.y};
+}
+
+CFramebuffer* CWindowTransformer::transform(CFramebuffer* in) {
+    static CFramebuffer off;
+
+    if (!off.isAllocated() || off.m_size != in->m_size) {
+        off.release();
+        off.alloc(in->m_size.x, in->m_size.y);
+    }
+
+    off.bind();
+    g_pHyprOpenGL->clear(CHyprColor{0,0,0,0});
+
+    CBox monbox = {oldPos.x - newPos.x, oldPos.y - newPos.y, g_pHyprOpenGL->m_renderData.pMonitor->m_transformedSize.x,
+                      g_pHyprOpenGL->m_renderData.pMonitor->m_transformedSize.y};
+
+    renderTex(monbox, *in->getTexture(), rot);
+
+    rot += 0.01;
+
+    return &off;
+}
+
+void onNewWindow(void* self, std::any data) {
+    // data is guaranteed
+    auto* const PWINDOW = std::any_cast<CWindow*>(data);
+
+    ptrs.push_back(static_cast<CWindowTransformer*>(PWINDOW->m_transformers.emplace_back(new CWindowTransformer{}).get()));
+    
+    HyprlandAPI::addNotification(PHANDLE, "onnewwindow", CHyprColor{0.f, 1.f, 1.f, 1.f}, 5000);
+    std::println("onnewwindow");
+    throw "up";
+}
+
+
 APICALL EXPORT PLUGIN_DESCRIPTION_INFO PLUGIN_INIT(HANDLE handle) {
     PHANDLE = handle;
 
@@ -28,13 +140,16 @@ APICALL EXPORT PLUGIN_DESCRIPTION_INFO PLUGIN_INIT(HANDLE handle) {
         throw std::runtime_error("[WiggleWobble] Version mismatch");
     }
 
-    HyprlandAPI::addNotification(PHANDLE, "WiggleWobble loaded!", CHyprColor{0.f, 1.f, 1.f, 1.f}, 5000);
+
+    static auto P = HyprlandAPI::registerCallbackDynamic(PHANDLE, "openWindow", [&](void* self, SCallbackInfo& info, std::any data) { onNewWindow(self, data); });
 
     HyprlandAPI::reloadConfig();
 
+    HyprlandAPI::addNotification(PHANDLE, "[WiggleWobble] Successfully loaded!", CHyprColor{0.f, 1.f, 1.f, 1.f}, 5000);
+
     return {"wigglewobble", "Wobbly windows for Hyprland", "All-Purpose Mat", PLUGIN_VERSION};
 }
 
 APICALL EXPORT void PLUGIN_EXIT() {
-    HyprlandAPI::invokeHyprctlCommand("seterror", "disable");
+    throw "down";
 }