From 7d4e2d44caffa545ffe9a2e8d1d19789cd91ed65 Mon Sep 17 00:00:00 2001
From: Igor Vasilenko <vasilenk@synopsys.com>
Date: Sun, 20 Aug 2023 22:03:20 +0100
Subject: [PATCH] Add bitmap setting to clipboard on for windows

---
 include/GLFW/glfw3.h |  3 +++
 src/input.c          |  6 ++++++
 src/internal.h       |  1 +
 src/win32_init.c     |  1 +
 src/win32_platform.h |  1 +
 src/win32_window.c   | 43 +++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 55 insertions(+)

diff --git a/include/GLFW/glfw3.h b/include/GLFW/glfw3.h
index 58b395cd..ec5bcba7 100644
--- a/include/GLFW/glfw3.h
+++ b/include/GLFW/glfw3.h
@@ -5823,6 +5823,9 @@ GLFWAPI int glfwGetGamepadState(int jid, GLFWgamepadstate* state);
  */
 GLFWAPI void glfwSetClipboardString(GLFWwindow* window, const char* string);
 
+// hacky way for a screenshot
+GLFWAPI void glfwSetClipboardBitmap(unsigned char * data, int width, int height);
+
 /*! @brief Returns the contents of the clipboard as a string.
  *
  *  This function returns the contents of the system clipboard, if it contains
diff --git a/src/input.c b/src/input.c
index 36128e10..d2b8a0bd 100644
--- a/src/input.c
+++ b/src/input.c
@@ -1459,6 +1459,12 @@ GLFWAPI void glfwSetClipboardString(GLFWwindow* handle, const char* string)
     _glfw.platform.setClipboardString(string);
 }
 
+GLFWAPI void glfwSetClipboardBitmap(unsigned char * data, int width, int height)
+{
+    _GLFW_REQUIRE_INIT();
+    _glfw.platform.setClipboardBitmap();
+}
+
 GLFWAPI const char* glfwGetClipboardString(GLFWwindow* handle)
 {
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
diff --git a/src/internal.h b/src/internal.h
index fe0369aa..d15641e7 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -750,6 +750,7 @@ struct _GLFWplatform
     void (*getRequiredInstanceExtensions)(char**);
     GLFWbool (*getPhysicalDevicePresentationSupport)(VkInstance,VkPhysicalDevice,uint32_t);
     VkResult (*createWindowSurface)(VkInstance,_GLFWwindow*,const VkAllocationCallbacks*,VkSurfaceKHR*);
+    void (*setClipboardBitmap)();
 };
 
 // Library global data
diff --git a/src/win32_init.c b/src/win32_init.c
index ef2615f1..afde41c0 100644
--- a/src/win32_init.c
+++ b/src/win32_init.c
@@ -677,6 +677,7 @@ GLFWbool _glfwConnectWin32(int platformID, _GLFWplatform* platform)
         _glfwGetRequiredInstanceExtensionsWin32,
         _glfwGetPhysicalDevicePresentationSupportWin32,
         _glfwCreateWindowSurfaceWin32,
+        _glfwSetClipboardBitmapWin32
     };
 
     *platform = win32;
diff --git a/src/win32_platform.h b/src/win32_platform.h
index 82b34bb9..de9ed1b8 100644
--- a/src/win32_platform.h
+++ b/src/win32_platform.h
@@ -591,6 +591,7 @@ GLFWbool _glfwCreateStandardCursorWin32(_GLFWcursor* cursor, int shape);
 void _glfwDestroyCursorWin32(_GLFWcursor* cursor);
 void _glfwSetCursorWin32(_GLFWwindow* window, _GLFWcursor* cursor);
 void _glfwSetClipboardStringWin32(const char* string);
+void _glfwSetClipboardBitmapWin32();
 const char* _glfwGetClipboardStringWin32(void);
 
 EGLenum _glfwGetEGLPlatformWin32(EGLint** attribs);
diff --git a/src/win32_window.c b/src/win32_window.c
index 676640bf..b2eb868b 100644
--- a/src/win32_window.c
+++ b/src/win32_window.c
@@ -2291,6 +2291,49 @@ void _glfwSetCursorWin32(_GLFWwindow* window, _GLFWcursor* cursor)
         updateCursorImage(window);
 }
 
+void _glfwSetClipboardBitmapWin32(unsigned char * data, int width, int height) {
+    // HDC hdcScreen;
+    // HDC hdcMemDC = NULL;
+    // HBITMAP hbmScreen = NULL;
+    HBITMAP fillBm = NULL;
+    // Retrieve the handle to a display device context for the client 
+    // area of the window. 
+    // hdcScreen = GetDC(NULL);
+
+    // and a device context to put it in
+    // hdcMemDC = CreateCompatibleDC(hdcScreen);
+
+    // int width = 1920;
+    // int height = 1080;
+
+    // Create a compatible bitmap from the Window DC.
+    // hbmScreen = CreateCompatibleBitmap(hdcScreen, width, height);
+    fillBm = CreateBitmap(width, height, 1, 32, data);
+
+    // get a new bitmap
+    // HBITMAP hOldBitmap = (HBITMAP)SelectObject(hdcMemDC, hbmScreen);
+    // BitBlt(hdcMemDC, 0, 0, width, height, hdcScreen, 0, 0, SRCCOPY);
+    // hbmScreen = (HBITMAP)SelectObject(hdcMemDC, hOldBitmap);
+
+
+    if (!OpenClipboard(_glfw.win32.helperWindowHandle)) {
+        _glfwInputErrorWin32(GLFW_PLATFORM_ERROR, "Win32: Failed to open clipboard");
+        return;
+    }
+    EmptyClipboard();
+
+    // place handle to clipboard
+    SetClipboardData(CF_BITMAP, fillBm);
+
+    // Close the clipboard. 
+    CloseClipboard();
+    DeleteObject(fillBm);
+    // DeleteObject(hbmScreen);
+    // DeleteObject(hOldBitmap);
+    // DeleteObject(hdcMemDC);
+    // ReleaseDC(NULL, hdcScreen);
+}
+
 void _glfwSetClipboardStringWin32(const char* string)
 {
     int characterCount;