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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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23
examples/imgui_impl_win32.cpp
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@ -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;
}
}