From 0b0aa3b06fac0bcdeb31d5e2211d1ba149531692 Mon Sep 17 00:00:00 2001
From: Fox Caminiti <fox@foxcam.net>
Date: Thu, 6 Oct 2022 14:30:48 -0400
Subject: GL renderer preparation

---
 my_imgui_widgets.cpp | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'my_imgui_widgets.cpp')

diff --git a/my_imgui_widgets.cpp b/my_imgui_widgets.cpp
index a688283..e8159fe 100644
--- a/my_imgui_widgets.cpp
+++ b/my_imgui_widgets.cpp
@@ -2,6 +2,33 @@
 #include "my_imgui_internal_widgets.h"
 #include "imgui_ops.h"
 
+static void
+ImGui_Viewport(block_composition *MainComp, GLuint textureID)
+{
+    bool open = true;
+    ImGui::Begin("Viewport", &open, ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse);
+
+    ImVec2 ViewportMin = ImGui::GetCursorScreenPos();
+    ImVec2 ViewportScale = ImGui::GetContentRegionAvail();
+    ImVec2 ViewportMax = ImVec2(ViewportMin.x + ViewportScale.x, ViewportMin.y + ViewportScale.y);
+
+    ImDrawList* draw_list = ImGui::GetWindowDrawList();
+    draw_list->AddRectFilled(ViewportMin, ViewportMax, IM_COL32(50, 50, 50, 255));
+    draw_list->AddRect(ViewportMin, ViewportMax, IM_COL32(255, 255, 255, 255));
+
+    ImVec2 CompZoom(MainComp->Width, MainComp->Height);
+    ImVec2 CompPos = ViewportMin + (ViewportMax - ViewportMin)*0.5 - CompZoom*0.5;
+
+    // Actual composition texture
+    draw_list->PushClipRect(ViewportMin, ViewportMax, true);
+    draw_list->AddImage((void *)(intptr_t)textureID, ImVec2(CompPos.x, CompPos.y),
+                           ImVec2(CompPos.x + CompZoom.x, CompPos.y + CompZoom.y));
+    draw_list->PopClipRect();
+
+    ImGui::End();
+}
+
+#if 0
 // 0 for timeline keyframe, 1 for graph keyframe, 2 for left graph handle, 3 for right graph handle
 static void
 ImGui_KeyframeDragging(project_data *File, project_state *State, ui *UI, property_channel *Property, int32 b, ImGuiIO io, int16 Type)
@@ -2595,3 +2622,4 @@ static char ImGuiPrefs[] = "[Window][DockSpaceViewport_11111111]"
     }
 
 #endif
+#endif
-- 
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