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Implement new window dragging system

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This commit is contained in:
Ari Vuollet
2025-01-21 20:14:44 +02:00
parent 738a506b6d
commit 279b3f8d9a
26 changed files with 6081 additions and 1210 deletions
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319
Source/Engine/Platform/SDL/SDLWindow.cpp
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@@ -14,7 +14,6 @@
#include "Engine/Input/Input.h"
#include "Engine/Input/Keyboard.h"
#include "Engine/Input/Mouse.h"
#include "Engine/Platform/IGuiData.h"
#include "Engine/Platform/WindowsManager.h"
#define NOGDI
@@ -26,8 +25,6 @@
#if PLATFORM_WINDOWS
#include "Engine/Platform/Win32/IncludeWindowsHeaders.h"
#define STYLE_RESIZABLE (WS_THICKFRAME | WS_MAXIMIZEBOX)
#define BORDERLESS_MAXIMIZE_WORKAROUND 2
#if USE_EDITOR
#include <oleidl.h>
#endif
@@ -37,57 +34,44 @@
#define DefaultDPI 96
namespace
namespace WindowImpl
{
SDLWindow* LastEventWindow = nullptr;
static SDL_Cursor* Cursors[SDL_SYSTEM_CURSOR_COUNT] = { nullptr };
#if BORDERLESS_MAXIMIZE_WORKAROUND == 2
int SkipMaximizeEventsCount = 0;
#endif
}
using namespace WindowImpl;
void* GetNativeWindowPointer(SDL_Window* window);
SDL_HitTestResult OnWindowHitTest(SDL_Window* win, const SDL_Point* area, void* data);
void GetRelativeWindowOffset(WindowType type, SDLWindow* parentWindow, Int2& positionOffset);
Int2 GetSDLWindowScreenPosition(const SDLWindow* window);
void SetSDLWindowScreenPosition(const SDLWindow* window, const int x, const int y);
void SetSDLWindowScreenPosition(const SDLWindow* window, const Int2 position);
class SDLDropFilesData : public IGuiData
bool IsPopupWindow(WindowType type)
{
public:
Array<String> Files;
return type == WindowType::Popup || type == WindowType::Tooltip;
}
Type GetType() const override
{
return Type::Files;
}
String GetAsText() const override
{
return String::Empty;
}
void GetAsFiles(Array<String>* files) const override
{
files->Add(Files);
}
};
class SDLDropTextData : public IGuiData
void* GetNativeWindowPointer(SDL_Window* window)
{
public:
StringView Text;
Type GetType() const override
{
return Type::Text;
}
String GetAsText() const override
{
return String(Text);
}
void GetAsFiles(Array<String>* files) const override
{
}
};
void* windowPtr;
auto props = SDL_GetWindowProperties(window);
#if PLATFORM_WINDOWS
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_WIN32_HWND_POINTER, nullptr);
#elif PLATFORM_LINUX
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER, nullptr);
if (windowPtr == nullptr)
windowPtr = (void*)SDL_GetNumberProperty(props, SDL_PROP_WINDOW_X11_WINDOW_NUMBER, 0);
#elif PLATFORM_MAC
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_COCOA_WINDOW_POINTER, nullptr);
#elif PLATFORM_ANDROID
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_ANDROID_WINDOW_POINTER, nullptr);
#elif PLATFORM_IOS
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_UIKIT_WINDOW_POINTER, nullptr);
#else
static_assert(false, "unsupported platform");
#endif
return windowPtr;
}
SDLWindow::SDLWindow(const CreateWindowSettings& settings)
: WindowBase(settings)
@@ -130,8 +114,8 @@ SDLWindow::SDLWindow(const CreateWindowSettings& settings)
flags |= SDL_WINDOW_TRANSPARENT;
// Disable parenting of child windows as those are always on top of the parent window and never show up in taskbar
//if (_settings.Parent != nullptr && (_settings.Type != WindowType::Tooltip && _settings.Type != WindowType::Popup))
// _settings.Parent = nullptr;
if (_settings.Parent != nullptr && (_settings.Type != WindowType::Tooltip && _settings.Type != WindowType::Popup))
_settings.Parent = nullptr;
// The window position needs to be relative to the parent window
Int2 relativePosition(Math::TruncToInt(settings.Position.X), Math::TruncToInt(settings.Position.Y));
@@ -190,10 +174,6 @@ SDLWindow::SDLWindow(const CreateWindowSettings& settings)
if (xdndAware != 0)
X11::XChangeProperty(xDisplay, (X11::Window)_handle, xdndAware, (X11::Atom)4, 32, PropModeReplace, (unsigned char*)&xdndVersion, 1);
}
else
{
// TODO: Wayland
}
#endif
}
#endif
@@ -203,32 +183,10 @@ SDLWindow::SDLWindow(const CreateWindowSettings& settings)
#if PLATFORM_LINUX
// Initialize using the shared Display instance from SDL
if (SDLPlatform::UsesX11() && SDLPlatform::GetXDisplay() == nullptr)
SDLPlatform::InitPlatformX11(GetX11Display());
SDLPlatform::InitX11(GetX11Display());
#endif
}
void* GetNativeWindowPointer(SDL_Window* window)
{
void* windowPtr;
auto props = SDL_GetWindowProperties(window);
#if PLATFORM_WINDOWS
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_WIN32_HWND_POINTER, nullptr);
#elif PLATFORM_LINUX
windowPtr = SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER, nullptr);
if (windowPtr == nullptr)
windowPtr = (void*)SDL_GetNumberProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_X11_WINDOW_NUMBER, 0);
#elif PLATFORM_MAC
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_COCOA_WINDOW_POINTER, nullptr);
#elif PLATFORM_ANDROID
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_ANDROID_WINDOW_POINTER, nullptr);
#elif PLATFORM_IOS
windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_UIKIT_WINDOW_POINTER, nullptr);
#else
static_assert(false, "unsupported platform");
#endif
return windowPtr;
}
SDL_Window* SDLWindow::GetSDLWindow() const
{
return _window;
@@ -265,7 +223,7 @@ SDLWindow::~SDLWindow()
if (_window == nullptr)
return;
SDL_StopTextInput(_window);
SDL_DestroyWindow(_window);
@@ -366,6 +324,10 @@ void SDLWindow::HandleEvent(SDL_Event& event)
if (_isClosing)
return;
// Platform specific event handling
if (HandleEventInternal(event))
return;
switch (event.type)
{
case SDL_EVENT_WINDOW_CLOSE_REQUESTED:
@@ -375,16 +337,6 @@ void SDLWindow::HandleEvent(SDL_Event& event)
}
case SDL_EVENT_WINDOW_DESTROYED:
{
#if USE_EDITOR && PLATFORM_WINDOWS
// Disable file dropping
if (_settings.AllowDragAndDrop)
{
const auto result = RevokeDragDrop((HWND)_handle);
if (result != S_OK)
LOG(Warning, "Window drag and drop service error: 0x{0:x}:{1}", result, 2);
}
#endif
// Quit
#if PLATFORM_WINDOWS
PostQuitMessage(0);
@@ -413,16 +365,6 @@ void SDLWindow::HandleEvent(SDL_Event& event)
case SDL_EVENT_WINDOW_MOVED:
{
_cachedClientRectangle.Location = Float2(static_cast<float>(event.window.data1), static_cast<float>(event.window.data2));
#if PLATFORM_LINUX
if (SDLPlatform::UsesX11())
{
// X11 doesn't report any mouse events when mouse is over the caption area, send a simulated event instead...
Float2 mousePosition;
auto buttons = SDL_GetGlobalMouseState(&mousePosition.X, &mousePosition.Y);
if ((buttons & SDL_BUTTON_MASK(SDL_BUTTON_LEFT)) != 0)
SDLPlatform::CheckWindowDragging(this, WindowHitCodes::Caption);
}
#endif
return;
}
case SDL_EVENT_WINDOW_HIT_TEST:
@@ -440,46 +382,11 @@ void SDLWindow::HandleEvent(SDL_Event& event)
_minimized = false;
_maximized = true;
#if PLATFORM_WINDOWS && BORDERLESS_MAXIMIZE_WORKAROUND == 2
if (SkipMaximizeEventsCount > 0)
{
SkipMaximizeEventsCount--;
return;
}
if (!_settings.HasBorder && _settings.HasSizingFrame)
{
// Restore the window back to previous state
SDL_RestoreWindow(_window);
// Remove the resizable flags from borderless windows and maximize the window again
auto style = ::GetWindowLong((HWND)_handle, GWL_STYLE);
style &= ~STYLE_RESIZABLE;
::SetWindowLong((HWND)_handle, GWL_STYLE, style);
SDL_MaximizeWindow(_window);
// Re-enable the resizable borderless flags
style = ::GetWindowLong((HWND)_handle, GWL_STYLE) | STYLE_RESIZABLE;
::SetWindowLong((HWND)_handle, GWL_STYLE, style);
// The next SDL_EVENT_WINDOW_RESTORED and SDL_EVENT_WINDOW_MAXIMIZED events should be ignored
SkipMaximizeEventsCount = 2;
}
#endif
CheckForWindowResize();
return;
}
case SDL_EVENT_WINDOW_RESTORED:
{
#if BORDERLESS_MAXIMIZE_WORKAROUND == 2
if (SkipMaximizeEventsCount > 0)
{
SkipMaximizeEventsCount--;
return;
}
#endif
if (_maximized)
{
_maximized = false;
@@ -543,68 +450,6 @@ void SDLWindow::HandleEvent(SDL_Event& event)
}
return;
}
#if false
case SDL_EVENT_DROP_BEGIN:
{
Focus();
Float2 mousePosition;
SDL_GetGlobalMouseState(&mousePosition.X, &mousePosition.Y);
mousePosition = ScreenToClient(mousePosition);
DragDropEffect effect;
SDLDropTextData dropData;
OnDragEnter(&dropData, mousePosition, effect);
OnDragOver(&dropData, mousePosition, effect);
return;
}
case SDL_EVENT_DROP_POSITION:
{
DragDropEffect effect = DragDropEffect::None;
SDLDropTextData dropData;
OnDragOver(&dropData, Float2(static_cast<float>(event.drop.x), static_cast<float>(event.drop.y)), effect);
return;
}
case SDL_EVENT_DROP_FILE:
{
SDLDropFilesData dropData;
dropData.Files.Add(StringAnsi(event.drop.data).ToString()); // TODO: collect multiple files at once?
Focus();
Float2 mousePosition;
SDL_GetGlobalMouseState(&mousePosition.X, &mousePosition.Y);
mousePosition = ScreenToClient(mousePosition);
DragDropEffect effect = DragDropEffect::None;
OnDragDrop(&dropData, mousePosition, effect);
return;
}
case SDL_EVENT_DROP_TEXT:
{
SDLDropTextData dropData;
String str = StringAnsi(event.drop.data).ToString();
dropData.Text = StringView(str);
Focus();
Float2 mousePosition;
SDL_GetGlobalMouseState(&mousePosition.X, &mousePosition.Y);
mousePosition = ScreenToClient(mousePosition);
DragDropEffect effect = DragDropEffect::None;
OnDragDrop(&dropData, mousePosition, effect);
return;
}
case SDL_EVENT_DROP_COMPLETE:
{
return;
}
#endif
case SDL_EVENT_WINDOW_MOUSE_LEAVE:
{
#if !PLATFORM_WINDOWS
OnDragLeave(); // Check for release of mouse button too?
#endif
break;
}
default:
break;
}
@@ -639,9 +484,9 @@ void SDLWindow::Show()
else if (_settings.Parent == nullptr)
BringToFront();
// Reused top-most windows (DockHintWindow) doesn't stay on top for some reason
if (_settings.IsTopmost && _settings.Type != WindowType::Tooltip)
SDL_SetWindowAlwaysOnTop(_window, true);
// Reused top-most windows doesn't stay on top for some reason
if (_settings.IsTopmost && !IsPopupWindow(_settings.Type))
SetIsAlwaysOnTop(true);
if (_isTrackingMouse)
{
@@ -678,19 +523,7 @@ void SDLWindow::Maximize()
if (!_settings.AllowMaximize)
return;
#if PLATFORM_WINDOWS && BORDERLESS_MAXIMIZE_WORKAROUND == 1
// Workaround for "SDL_BORDERLESS_RESIZABLE_STYLE" hint not working as expected when maximizing windows
auto style = ::GetWindowLong((HWND)_handle, GWL_STYLE);
style &= ~STYLE_RESIZABLE;
::SetWindowLong((HWND)_handle, GWL_STYLE, style);
SDL_MaximizeWindow(_window);
style = ::GetWindowLong((HWND)_handle, GWL_STYLE) | STYLE_RESIZABLE;
::SetWindowLong((HWND)_handle, GWL_STYLE, style);
#else
SDL_MaximizeWindow(_window);
#endif
}
void SDLWindow::SetBorderless(bool isBorderless, bool maximized)
@@ -706,45 +539,18 @@ void SDLWindow::SetBorderless(bool isBorderless, bool maximized)
BringToFront();
if (isBorderless)
{
SDL_SetWindowBordered(_window, !isBorderless ? true : false);
if (maximized)
{
Maximize();
}
else
Focus();
}
SDL_SetWindowBordered(_window, !isBorderless ? true : false);
if (maximized)
Maximize();
else
{
SDL_SetWindowBordered(_window, !isBorderless ? true : false);
if (maximized)
{
Maximize();
}
else
Focus();
}
Focus();
CheckForWindowResize();
}
void SDLWindow::Restore()
{
#if PLATFORM_WINDOWS && BORDERLESS_MAXIMIZE_WORKAROUND == 1
// Workaround for "SDL_BORDERLESS_RESIZABLE_STYLE" hint not working as expected when maximizing windows
auto style = ::GetWindowLong((HWND)_handle, GWL_STYLE);
style &= ~STYLE_RESIZABLE;
::SetWindowLong((HWND)_handle, GWL_STYLE, style);
SDL_RestoreWindow(_window);
style = ::GetWindowLong((HWND)_handle, GWL_STYLE) | STYLE_RESIZABLE;
::SetWindowLong((HWND)_handle, GWL_STYLE, style);
#else
SDL_RestoreWindow(_window);
#endif
}
bool SDLWindow::IsClosed() const
@@ -760,28 +566,19 @@ bool SDLWindow::IsForegroundWindow() const
void SDLWindow::BringToFront(bool force)
{
auto activateWhenRaised = SDL_GetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_RAISED);
SDL_SetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_RAISED, "0");
SDL_RaiseWindow(_window);
SDL_SetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_RAISED, activateWhenRaised);
}
void SDLWindow::SetClientBounds(const Rectangle& clientArea)
{
int newX = static_cast<int>(clientArea.GetLeft());
int newY = static_cast<int>(clientArea.GetTop());
Int2 newPos = Int2(clientArea.GetTopLeft());
int newW = static_cast<int>(clientArea.GetWidth());
int newH = static_cast<int>(clientArea.GetHeight());
SetSDLWindowScreenPosition(this, newX, newY);
SetSDLWindowScreenPosition(this, newPos);
SDL_SetWindowSize(_window, newW, newH);
}
bool IsPopupWindow(WindowType type)
{
return type == WindowType::Popup || type == WindowType::Tooltip;
}
void GetRelativeWindowOffset(WindowType type, SDLWindow* parentWindow, Int2& positionOffset)
{
if (!IsPopupWindow(type))
@@ -812,9 +609,9 @@ Int2 GetSDLWindowScreenPosition(const SDLWindow* window)
return position - relativeOffset;
}
void SetSDLWindowScreenPosition(const SDLWindow* window, const int x, const int y)
void SetSDLWindowScreenPosition(const SDLWindow* window, const Int2 position)
{
Int2 relativePosition(x, y);
Int2 relativePosition = position;
GetRelativeWindowOffset(window->GetSettings().Type, window->GetSettings().Parent, relativePosition);
SDL_SetWindowPosition(window->GetSDLWindow(), relativePosition.X, relativePosition.Y);
}
@@ -834,12 +631,12 @@ void SDLWindow::SetPosition(const Float2& position)
screenPosition += Int2(monitorBounds.GetTopLeft());
}
SetSDLWindowScreenPosition(this, screenPosition.X, screenPosition.Y);
SetSDLWindowScreenPosition(this, screenPosition);
}
void SDLWindow::SetClientPosition(const Float2& position)
{
SetSDLWindowScreenPosition(this, static_cast<int>(position.X), static_cast<int>(position.Y));
SetSDLWindowScreenPosition(this, Int2(position));
}
void SDLWindow::SetIsFullscreen(bool isFullscreen)
@@ -848,7 +645,7 @@ void SDLWindow::SetIsFullscreen(bool isFullscreen)
if (!isFullscreen)
{
// The window is set to always-on-top for some reason when leaving fullscreen
SDL_SetWindowAlwaysOnTop(_window, false);
SetIsAlwaysOnTop(false);
}
WindowBase::SetIsFullscreen(isFullscreen);
@@ -930,25 +727,15 @@ void SDLWindow::SetOpacity(const float opacity)
LOG(Warning, "SDL_SetWindowOpacity failed: {0}", String(SDL_GetError()));
}
#if !PLATFORM_WINDOWS
void SDLWindow::Focus()
{
#if PLATFORM_WINDOWS
auto activateWhenRaised = SDL_GetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_RAISED);
SDL_SetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_RAISED, "1");
// Forcing the window to focus causes issues with opening context menus while window is maximized
//auto forceRaiseWindow = SDL_GetHint(SDL_HINT_FORCE_RAISEWINDOW);
//SDL_SetHint(SDL_HINT_FORCE_RAISEWINDOW, "1");
SDL_RaiseWindow(_window);
SDL_SetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_RAISED, activateWhenRaised);
//SDL_SetHint(SDL_HINT_FORCE_RAISEWINDOW, forceRaiseWindow);
#else
SDL_RaiseWindow(_window);
#endif
}
#endif
String SDLWindow::GetTitle() const
{
return String(SDL_GetWindowTitle(_window));