Added a function to get the color (RGBA) of a specific pixel by coord…

…inates
Lecrapouille · Jul 23, 2024 · 33e4166 · 33e4166
1 parent a02c79d
commit 33e4166
Show file tree

Hide file tree

Showing 3 changed files with 26 additions and 1 deletion.
diff --git a/addons/gdcef/doc/API.md b/addons/gdcef/doc/API.md
@@ -19,7 +19,8 @@ Chromium Embedded Framework. This class can create instances of `GDBrowserView`
 | `_process`          | `dt`: float                                     | void           | Hidden function called automatically by Godot and call CEF internal pump messages. `dt` is not used.                                                                                                    |
 | `create_browser`    | `url`: string, `texture_rect`: TextureRect, `settings`: godot::Dictionary | GDBrowserView* | Create a browser tab and store its instance as child node. `url`: the page link. `texture_rect`: the container holding the texture. `settings` optional settings for the created browser. |
 | `shutdown`          |                                                 |                | Release CEF memory and sub CEF processes are notified that the application is exiting. All browsers are destroyed. `GDCef` is no more alive.                                                            |
-| `get_error`         |                                                 | String         | Return the latest error.                                                                                                                                                                                |
+| `get_pixel_color`         |  `x`: int, `y`: int                                               | Color         | Returns the color of a specific pixel in the browser view.     
+| `get_error`         |                                                 | String         | Return the latest error.                                                                                                                                                                               |
 | `get_version`       |                                                 | String         | Return the full CEF version as string.                                                                                                                                                                  |
 | `get_version_part`  | `entry`: int                                    | int            | Return part of the CEF version as integer.                                                                                                                                                              |
 

diff --git a/addons/gdcef/gdcef/src/gdbrowser.cpp b/addons/gdcef/gdcef/src/gdbrowser.cpp
@@ -111,6 +111,7 @@ void GDBrowserView::_bind_methods()
     ClassDB::bind_method(D_METHOD("is_muted"), &GDBrowserView::muted);
     ClassDB::bind_method(D_METHOD("set_audio_stream", "audio"), &GDBrowserView::setAudioStreamer);
     ClassDB::bind_method(D_METHOD("get_audio_stream"), &GDBrowserView::getAudioStreamer);
+    ClassDB::bind_method(D_METHOD("get_pixel_color", "x", "y"), &GDBrowserView::getPixelColor);
     ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "audio_stream", PROPERTY_HINT_NODE_TYPE,
         "AudioStreamGeneratorPlayback"), "set_audio_stream", "get_audio_stream");
 
@@ -683,4 +684,21 @@ void GDBrowserView::onAudioStreamPacket(CefRefPtr<CefBrowser> browser,
             streamer.push_frame(godot::Vector2(data[0][i], data[0][i]));
         }
     }
+}
+
+//------------------------------------------------------------------------------
+godot::Color GDBrowserView::getPixelColor(int x, int y) const
+{
+    // Ensure the browser is valid and coordinates are within bounds
+    if (x < 0 || y < 0 || x >= m_width || y >= m_height || m_data.size() == 0)
+        return godot::Color(1, 1, 1, 1);  // Return full white as fallback
+
+
+    int index = (y * m_width + x) * 4;
+    unsigned char r = m_data[index + 0];
+    unsigned char g = m_data[index + 1];
+    unsigned char b = m_data[index + 2];
+    unsigned char a = m_data[index + 3];
+
+    return godot::Color(r / 255.0, g / 255.0, b / 255.0, a / 255.0);
 }
diff --git a/addons/gdcef/gdcef/src/gdbrowser.hpp b/addons/gdcef/gdcef/src/gdbrowser.hpp
@@ -547,6 +547,12 @@ class GDBrowserView : public godot::Node
             return nullptr;
         return m_impl->m_audio.streamer;
     }
+
+    // -------------------------------------------------------------------------
+    //! \brief Exported method to Godot script. Get the color of the currently 
+    //! hovered on pixel
+    // -------------------------------------------------------------------------
+    godot::Color getPixelColor(int x, int y) const;
 
 private: