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Viewport, Platform, Examples: Changes to resizing flow + restored support for Platform events affecting the ImGui windows (so Decorated windows are functional). (#1542, #1042) ..

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SDL: Added platform move/resize/close support.
GLFW: Added platform move/resize support. Moved Close to use callback for consistency.
Win32:
Vulkan: Fixed resize support.
Naming is WIP "PlatforrmRequestXXX" is too ambiguous. Basically we either have a ImGui->Platform flow or a Platform->ImGui flow. Working a bigger refactor now.
This commit is contained in:
omar
2018-03-15 10:54:27 +01:00
parent 207ad45983
commit 6e58a95a01
6 changed files with 90 additions and 34 deletions
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24
examples/imgui_impl_glfw.cpp
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@ -310,6 +310,24 @@ struct ImGuiPlatformDataGlfw
~ImGuiPlatformDataGlfw() { IM_ASSERT(Window == NULL); }
};
static void ImGui_ImplGlfw_WindowCloseCallback(GLFWwindow* window)
{
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window))
viewport->PlatformRequestClose = true;
}
static void ImGui_ImplGlfw_WindowPosCallback(GLFWwindow* window, int, int)
{
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window))
viewport->PlatformRequestMove = true;
}
static void ImGui_ImplGlfw_WindowSizeCallback(GLFWwindow* window, int, int)
{
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window))
viewport->PlatformRequestResize = true;
}
static void ImGui_ImplGlfw_CreateViewport(ImGuiViewport* viewport)
{
ImGuiPlatformDataGlfw* data = IM_NEW(ImGuiPlatformDataGlfw)();
@ -324,6 +342,9 @@ static void ImGui_ImplGlfw_CreateViewport(ImGuiViewport* viewport)
data->WindowOwned = true;
viewport->PlatformHandle = (void*)data->Window;
ImGui_ImplGlfw_InstallCallbacks(data->Window);
glfwSetWindowCloseCallback(data->Window, ImGui_ImplGlfw_WindowCloseCallback);
glfwSetWindowPosCallback(data->Window, ImGui_ImplGlfw_WindowPosCallback);
glfwSetWindowSizeCallback(data->Window, ImGui_ImplGlfw_WindowSizeCallback);
}
static void ImGui_ImplGlfw_DestroyViewport(ImGuiViewport* viewport)
@ -431,9 +452,6 @@ static void ImGui_ImplGlfw_RenderViewport(ImGuiViewport* viewport)
ImGuiPlatformDataGlfw* data = (ImGuiPlatformDataGlfw*)viewport->PlatformUserData;
if (g_ClientApi == GlfwClientApi_OpenGL)
glfwMakeContextCurrent(data->Window);
if (glfwWindowShouldClose(data->Window))
viewport->PlatformRequestClose = true;
}
static void ImGui_ImplGlfw_SwapBuffers(ImGuiViewport* viewport)

22
examples/imgui_impl_sdl2.cpp
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@ -100,6 +100,21 @@ bool ImGui_ImplSDL2_ProcessEvent(SDL_Event* event)
io.KeySuper = ((SDL_GetModState() & KMOD_GUI) != 0);
return true;
}
// Multi-viewport support
case SDL_WINDOWEVENT:
Uint8 window_event = event->window.event;
if (window_event == SDL_WINDOWEVENT_CLOSE || window_event == SDL_WINDOWEVENT_MOVED || window_event == SDL_WINDOWEVENT_RESIZED)
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle((void*)SDL_GetWindowFromID(event->window.windowID)))
{
if (window_event == SDL_WINDOWEVENT_CLOSE)
viewport->PlatformRequestClose = true;
if (window_event == SDL_WINDOWEVENT_MOVED)
viewport->PlatformRequestMove = true;
if (window_event == SDL_WINDOWEVENT_RESIZED)
viewport->PlatformRequestResize = true;
return true;
}
break;
}
return false;
}
@ -288,7 +303,8 @@ static void ImGui_ImplSDL2_CreateViewport(ImGuiViewport* viewport)
sdl_flags |= SDL_WINDOW_HIDDEN;
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? SDL_WINDOW_BORDERLESS : 0;
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? 0 : SDL_WINDOW_RESIZABLE;
data->Window = SDL_CreateWindow("No Title Yet", 0, 0, (int)viewport->Size.x, (int)viewport->Size.y, sdl_flags);
data->Window = SDL_CreateWindow("No Title Yet",
(int)viewport->PlatformOsDesktopPos.x, (int)viewport->PlatformOsDesktopPos.y, (int)viewport->Size.x, (int)viewport->Size.y, sdl_flags);
if (main_viewport_data->GLContext)
data->GLContext = SDL_GL_CreateContext(data->Window);
viewport->PlatformHandle = (void*)data->Window;
@ -328,7 +344,7 @@ static void ImGui_ImplSDL2_ShowWindow(ImGuiViewport* viewport)
ex_style &= ~WS_EX_APPWINDOW;
ex_style |= WS_EX_TOOLWINDOW;
::SetWindowLong(hwnd, GWL_EXSTYLE, ex_style);
}
}
// SDL hack: SDL always activate/focus windows :/
if (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing)
@ -336,7 +352,7 @@ static void ImGui_ImplSDL2_ShowWindow(ImGuiViewport* viewport)
::ShowWindow(hwnd, SW_SHOWNA);
return;
}
}
}
#endif
SDL_ShowWindow(data->Window);

5
examples/imgui_impl_vulkan.cpp
View File

@ -1108,8 +1108,9 @@ static void ImGui_ImplVulkan_DestroyViewport(ImGuiViewport* viewport)
static void ImGui_ImplVulkan_ResizeViewport(ImGuiViewport* viewport, ImVec2 size)
{
ImGuiPlatformDataVulkan* data = (ImGuiPlatformDataVulkan*)viewport->RendererUserData;
ImGui_ImplVulkan_WindowData* wd = &data->WindowData;
ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, wd, g_Allocator, (int)size.x, (int)size.y);
if (data == NULL) // This is NULL for the main viewport (which is left to the user/app to handle)
return;
ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &data->WindowData, g_Allocator, (int)size.x, (int)size.y);
}
static void ImGui_ImplVulkan_RenderViewport(ImGuiViewport* viewport)

23
examples/imgui_impl_win32.cpp
View File

@ -356,11 +356,10 @@ float ImGui_ImplWin32_GetDpiScaleForRect(int x1, int y1, int x2, int y2)
struct ImGuiPlatformDataWin32
{
HWND Hwnd;
bool ExternalResize;
DWORD DwStyle;
DWORD DwExStyle;
ImGuiPlatformDataWin32() { Hwnd = NULL; ExternalResize = false; DwStyle = DwExStyle = 0; }
ImGuiPlatformDataWin32() { Hwnd = NULL; DwStyle = DwExStyle = 0; }
~ImGuiPlatformDataWin32() { IM_ASSERT(Hwnd == NULL); }
};
@ -386,12 +385,11 @@ static void ImGui_ImplWin32_CreateViewport(ImGuiViewport* viewport)
// Create window
RECT rect = { (LONG)viewport->PlatformOsDesktopPos.x, (LONG)viewport->PlatformOsDesktopPos.y, (LONG)(viewport->PlatformOsDesktopPos.x + viewport->Size.x), (LONG)(viewport->PlatformOsDesktopPos.y + viewport->Size.y) };
::AdjustWindowRectEx(&rect, data->DwStyle, FALSE, data->DwExStyle);
data->ExternalResize = true;
data->Hwnd = ::CreateWindowExA(
data->DwExStyle, "ImGui Platform", "No Title Yet", data->DwStyle, // Style, class name, window name
rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, // Window area
g_hWnd, NULL, ::GetModuleHandle(NULL), NULL); // Parent window, Menu, Instance, Param
data->ExternalResize = false;
viewport->PlatformRequestResize = false;
viewport->PlatformHandle = data->Hwnd;
}
@ -417,12 +415,10 @@ static void ImGui_ImplWin32_ShowWindow(ImGuiViewport* viewport)
{
ImGuiPlatformDataWin32* data = (ImGuiPlatformDataWin32*)viewport->PlatformUserData;
IM_ASSERT(data->Hwnd != 0);
data->ExternalResize = true;
if (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing)
::ShowWindow(data->Hwnd, SW_SHOWNA);
else
::ShowWindow(data->Hwnd, SW_SHOW);
data->ExternalResize = false;
}
static ImVec2 ImGui_ImplWin32_GetWindowPos(ImGuiViewport* viewport)
@ -456,11 +452,9 @@ static void ImGui_ImplWin32_SetWindowSize(ImGuiViewport* viewport, ImVec2 size)
{
ImGuiPlatformDataWin32* data = (ImGuiPlatformDataWin32*)viewport->PlatformUserData;
IM_ASSERT(data->Hwnd != 0);
data->ExternalResize = true;
RECT rect = { 0, 0, (LONG)size.x, (LONG)size.y };
::AdjustWindowRectEx(&rect, data->DwStyle, FALSE, data->DwExStyle); // Client to Screen
::SetWindowPos(data->Hwnd, NULL, 0, 0, rect.right - rect.left, rect.bottom - rect.top, SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
data->ExternalResize = false;
}
static void ImGui_ImplWin32_SetWindowTitle(ImGuiViewport* viewport, const char* title)
@ -489,27 +483,22 @@ static LRESULT CALLBACK ImGui_ImplWin32_WndProcHandler_PlatformWindow(HWND hWnd,
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle((void*)hWnd))
{
ImGuiIO& io = ImGui::GetIO();
ImGuiPlatformDataWin32* data = (ImGuiPlatformDataWin32*)viewport->PlatformUserData;
switch (msg)
{
case WM_CLOSE:
viewport->PlatformRequestClose = true;
return 0;
case WM_MOVE:
viewport->PlatformOsDesktopPos = ImVec2((float)(short)LOWORD(lParam), (float)(short)HIWORD(lParam));
viewport->PlatformRequestMove = true;
break;
case WM_SIZE:
viewport->PlatformRequestResize = true;
break;
case WM_NCHITTEST:
// Let mouse pass-through the window, this is used while e.g. dragging a window, we creates a temporary overlay but want the cursor to aim behind our overlay.
if (viewport->Flags & ImGuiViewportFlags_NoInputs)
return HTTRANSPARENT;
break;
case WM_SIZE:
if (!data->ExternalResize)
viewport->PlatformRequestResize = true;
if (io.RendererInterface.ResizeViewport)
io.RendererInterface.ResizeViewport(viewport, ImVec2((float)LOWORD(lParam), (float)HIWORD(lParam)));
break;
}
}