From 2d2fc243662fe5a24b4e3e388d3a3525a0bd48f1 Mon Sep 17 00:00:00 2001
From: LaG1924 <lag1924@gmail.com>
Date: Sun, 4 Jul 2021 15:05:00 +0500
Subject: Added RmlDebugger

---
 src/Render.cpp | 18 ++++++++++++++++++
 src/Rml.cpp    | 10 ++++++++--
 src/Rml.hpp    |  1 +
 3 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/src/Render.cpp b/src/Render.cpp
index 6aecd88..a76bba7 100644
--- a/src/Render.cpp
+++ b/src/Render.cpp
@@ -4,6 +4,7 @@
 #include <optick.h>
 #include <RmlUi/Core.h>
 #include <RmlUi/Lua.h>
+#include <RmlUi/Debugger.h>
 
 #include "Shader.hpp"
 #include "AssetManager.hpp"
@@ -293,6 +294,15 @@ void Render::HandleEvents() {
                         break;
                     }
 
+                    case SDL_SCANCODE_F8:
+                        Rml::Debugger::SetVisible(!Rml::Debugger::IsVisible());
+                        break;
+
+                    case SDL_SCANCODE_F7: {
+                        SetMouseCapture(!isMouseCaptured);
+                        break;
+                    }
+
                     default:
                         break;
                 }
@@ -358,6 +368,11 @@ void Render::HandleEvents() {
                 break;
             }
 
+            case SDL_MOUSEWHEEL: {
+                rmlContext->ProcessMouseWheel(-event.wheel.y, rmlKeymods);
+                break;
+            }
+
             case SDL_TEXTINPUT: {
                 rmlContext->ProcessTextInput(Rml::String(event.text.text));
                 break;
@@ -567,4 +582,7 @@ void Render::InitRml() {
     Rml::Lua::Initialise(PluginSystem::GetLuaState());
 
     rmlContext = Rml::CreateContext("default", Rml::Vector2i(renderState.WindowWidth, renderState.WindowHeight));
+
+    if (!Rml::Debugger::Initialise(rmlContext))
+        LOG(WARNING) << "Rml debugger not initialized";
 }
diff --git a/src/Rml.cpp b/src/Rml.cpp
index 6ed83c1..179d4b9 100644
--- a/src/Rml.cpp
+++ b/src/Rml.cpp
@@ -117,11 +117,15 @@ void RmlRenderInterface::RenderGeometry(Rml::Vertex* vertices, int num_vertices,
 }
 
 void RmlRenderInterface::EnableScissorRegion(bool enable) {
-
+    if (enable)
+        glEnable(GL_SCISSOR_TEST);
+    else
+        glDisable(GL_SCISSOR_TEST);
 }
 
 void RmlRenderInterface::SetScissorRegion(int x, int y, int width, int height) {
-
+    glScissor(x, vpHeight - (y + height), width, height);
+    glCheckError();
 }
 
 bool RmlRenderInterface::LoadTexture(Rml::TextureHandle& texture_handle, Rml::Vector2i& texture_dimensions, const Rml::String& source) {
@@ -161,6 +165,8 @@ void RmlRenderInterface::Update(unsigned int windowWidth, unsigned int windowHei
     AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rmltex")->shader->SetUniform("viewportSize", windowWidth, windowHeight);
     AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rmltex")->shader->SetUniform("fontTexture", 0);
     glCheckError();
+    vpWidth = windowWidth;
+    vpHeight = windowHeight;
 }
 
 Rml::FileHandle RmlFileInterface::Open(const Rml::String& path) {
diff --git a/src/Rml.hpp b/src/Rml.hpp
index 6e4d857..edcdc8b 100644
--- a/src/Rml.hpp
+++ b/src/Rml.hpp
@@ -34,6 +34,7 @@ class RmlRenderInterface : public Rml::RenderInterface {
 
 	GLuint Vao, Vbo, Ebo;
 
+	unsigned int vpWidth, vpHeight;
 public:
 
 	RmlRenderInterface(RenderState &renderState);
-- 
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