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win32: Implement popup windows

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This commit is contained in:
Frank Praznik
2023-03-02 17:32:18 -05:00
committed by Sam Lantinga
parent 77dc1a929a
commit 98e864f286
4 changed files with 144 additions and 22 deletions
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133
src/video/windows/SDL_windowswindow.c
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@@ -79,7 +79,9 @@ static DWORD GetWindowStyle(SDL_Window *window)
{
DWORD style = 0;
if (window->flags & SDL_WINDOW_FULLSCREEN) {
if (SDL_WINDOW_IS_POPUP(window)) {
style |= WS_POPUP;
} else if (window->flags & SDL_WINDOW_FULLSCREEN) {
style |= STYLE_FULLSCREEN;
} else {
if (window->flags & SDL_WINDOW_BORDERLESS) {
@@ -114,6 +116,16 @@ static DWORD GetWindowStyle(SDL_Window *window)
return style;
}
static DWORD GetWindowStyleEx(SDL_Window *window)
{
DWORD style = WS_EX_APPWINDOW;
if (SDL_WINDOW_IS_POPUP(window)) {
style = WS_EX_TOOLWINDOW | WS_EX_NOACTIVATE;
}
return style;
}
/**
* Returns arguments to pass to SetWindowPos - the window rect, including frame, in Windows coordinates.
* Can be called before we have a HWND.
@@ -128,8 +140,10 @@ static void WIN_AdjustWindowRectWithStyle(SDL_Window *window, DWORD style, BOOL
#endif
/* Client rect, in SDL screen coordinates */
*x = (use_current ? window->x : window->windowed.x);
*y = (use_current ? window->y : window->windowed.y);
SDL_RelativeToGlobalForWindow(window,
(use_current ? window->x : window->windowed.x),
(use_current ? window->y : window->windowed.y),
x, y);
*width = (use_current ? window->w : window->windowed.w);
*height = (use_current ? window->h : window->windowed.h);
@@ -222,8 +236,9 @@ static void WIN_AdjustWindowRect(SDL_Window *window, int *x, int *y, int *width,
WIN_AdjustWindowRectWithStyle(window, style, menu, x, y, width, height, use_current);
}
static void WIN_SetWindowPositionInternal(_THIS, SDL_Window *window, UINT flags)
void WIN_SetWindowPositionInternal(SDL_Window *window, UINT flags)
{
SDL_Window *child_window;
SDL_WindowData *data = window->driverdata;
HWND hwnd = data->hwnd;
HWND top;
@@ -242,6 +257,11 @@ static void WIN_SetWindowPositionInternal(_THIS, SDL_Window *window, UINT flags)
data->expected_resize = SDL_TRUE;
SetWindowPos(hwnd, top, x, y, w, h, flags);
data->expected_resize = SDL_FALSE;
/* Update any child windows */
for (child_window = window->first_child; child_window != NULL; child_window = child_window->next_sibling) {
WIN_SetWindowPositionInternal(child_window, flags);
}
}
static void SDLCALL WIN_MouseRelativeModeCenterChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
@@ -304,7 +324,7 @@ static int SetupWindowData(_THIS, SDL_Window *window, HWND hwnd, HWND parent, SD
data->hwnd = hwnd;
data->parent = parent;
#if defined(__XBOXONE__) || defined(__XBOXSERIES__)
data->hdc = (HDC) data->hwnd;
data->hdc = (HDC)data->hwnd;
#else
data->hdc = GetDC(hwnd);
#endif
@@ -445,6 +465,10 @@ static int SetupWindowData(_THIS, SDL_Window *window, HWND hwnd, HWND parent, SD
window->flags |= SDL_WINDOW_ALLOW_HIGHDPI;
}
if (data->parent && !window->parent) {
data->destroy_parent_with_window = SDL_TRUE;
}
data->initializing = SDL_FALSE;
/* All done! */
@@ -470,7 +494,7 @@ static void CleanupWindowData(_THIS, SDL_Window *window)
#endif
if (data->created) {
DestroyWindow(data->hwnd);
if (data->parent) {
if (data->destroy_parent_with_window && data->parent) {
DestroyWindow(data->parent);
}
} else {
@@ -490,29 +514,81 @@ static void CleanupWindowData(_THIS, SDL_Window *window)
window->driverdata = NULL;
}
static void WIN_ConstrainPopup(SDL_Window *window)
{
/* Clamp popup windows to the output borders */
if (SDL_WINDOW_IS_POPUP(window)) {
SDL_Window *w;
SDL_DisplayID displayID;
SDL_Rect rect;
int abs_x = window->x;
int abs_y = window->y;
int offset_x = 0, offset_y = 0;
/* Calculate the total offset from the parents */
for (w = window->parent; w->parent != NULL; w = w->parent) {
offset_x += w->x;
offset_y += w->y;
}
offset_x += w->x;
offset_y += w->y;
abs_x += offset_x;
abs_y += offset_y;
/* Constrain the popup window to the display of the toplevel parent */
displayID = SDL_GetDisplayForWindow(w);
SDL_GetDisplayBounds(displayID, &rect);
if (abs_x + window->w > rect.x + rect.w) {
abs_x -= (abs_x + window->w) - (rect.x + rect.w);
}
if (abs_y + window->h > rect.y + rect.h) {
abs_y -= (abs_y + window->h) - (rect.y + rect.h);
}
abs_x = SDL_max(abs_x, rect.x);
abs_y = SDL_max(abs_y, rect.y);
window->x = window->windowed.x = abs_x - offset_x;
window->y = window->windowed.y = abs_y - offset_y;
}
}
static void WIN_SetKeyboardFocus(SDL_Window *window)
{
SDL_Window *topmost = window;
/* Find the topmost parent */
while (topmost->parent != NULL) {
topmost = topmost->parent;
}
topmost->driverdata->keyboard_focus = window;
SDL_SetKeyboardFocus(window);
}
int WIN_CreateWindow(_THIS, SDL_Window *window)
{
HWND hwnd, parent = NULL;
DWORD style = STYLE_BASIC;
DWORD styleEx = 0;
int x, y;
int w, h;
if (window->flags & SDL_WINDOW_SKIP_TASKBAR) {
if (SDL_WINDOW_IS_POPUP(window)) {
parent = window->parent->driverdata->hwnd;
} else if (window->flags & SDL_WINDOW_SKIP_TASKBAR) {
parent = CreateWindow(SDL_Appname, TEXT(""), STYLE_BASIC, 0, 0, 32, 32, NULL, NULL, SDL_Instance, NULL);
}
style |= GetWindowStyle(window);
styleEx |= GetWindowStyleEx(window);
/* Figure out what the window area will be */
WIN_ConstrainPopup(window);
WIN_AdjustWindowRectWithStyle(window, style, FALSE, &x, &y, &w, &h, SDL_FALSE);
if (window->undefined_x && window->undefined_y &&
window->last_displayID == SDL_GetPrimaryDisplay()) {
x = CW_USEDEFAULT;
y = CW_USEDEFAULT; /* Not actually used */
}
hwnd = CreateWindow(SDL_Appname, TEXT(""), style, x, y, w, h, parent, NULL, SDL_Instance, NULL);
hwnd = CreateWindowEx(styleEx, SDL_Appname, TEXT(""), style,
x, y, w, h, parent, NULL, SDL_Instance, NULL);
if (!hwnd) {
return WIN_SetError("Couldn't create window");
}
@@ -711,12 +787,13 @@ void WIN_SetWindowPosition(_THIS, SDL_Window *window)
/* HighDPI support: removed SWP_NOSIZE. If the move results in a DPI change, we need to allow
* the window to resize (e.g. AdjustWindowRectExForDpi frame sizes are different).
*/
WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOACTIVATE);
WIN_ConstrainPopup(window);
WIN_SetWindowPositionInternal(window, SWP_NOCOPYBITS | SWP_NOACTIVATE);
}
void WIN_SetWindowSize(_THIS, SDL_Window *window)
{
WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOACTIVATE);
WIN_SetWindowPositionInternal(window, SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOACTIVATE);
}
int WIN_GetWindowBordersSize(_THIS, SDL_Window *window, int *top, int *left, int *bottom, int *right)
@@ -814,12 +891,32 @@ void WIN_ShowWindow(_THIS, SDL_Window *window)
nCmdShow = SW_SHOWNOACTIVATE;
}
ShowWindow(hwnd, nCmdShow);
if (window->flags & SDL_WINDOW_POPUP_MENU) {
if (window->parent == SDL_GetKeyboardFocus()) {
WIN_SetKeyboardFocus(window);
}
}
}
void WIN_HideWindow(_THIS, SDL_Window *window)
{
HWND hwnd = window->driverdata->hwnd;
ShowWindow(hwnd, SW_HIDE);
/* Transfer keyboard focus back to the parent */
if (window->flags & SDL_WINDOW_POPUP_MENU) {
if (window == SDL_GetKeyboardFocus()) {
SDL_Window *new_focus = window->parent;
/* Find the highest level window that isn't being hidden or destroyed. */
while (new_focus->parent != NULL && (new_focus->is_hiding || new_focus->is_destroying)) {
new_focus = new_focus->parent;
}
WIN_SetKeyboardFocus(new_focus);
}
}
}
void WIN_RaiseWindow(_THIS, SDL_Window *window)
@@ -885,7 +982,7 @@ void WIN_SetWindowBordered(_THIS, SDL_Window *window, SDL_bool bordered)
data->in_border_change = SDL_TRUE;
SetWindowLong(hwnd, GWL_STYLE, style);
WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_FRAMECHANGED | SWP_NOZORDER | SWP_NOACTIVATE);
WIN_SetWindowPositionInternal(window, SWP_NOCOPYBITS | SWP_FRAMECHANGED | SWP_NOZORDER | SWP_NOACTIVATE);
data->in_border_change = SDL_FALSE;
}
@@ -1228,7 +1325,7 @@ void WIN_OnWindowEnter(_THIS, SDL_Window *window)
}
if (window->flags & SDL_WINDOW_ALWAYS_ON_TOP) {
WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOSIZE | SWP_NOACTIVATE);
WIN_SetWindowPositionInternal(window, SWP_NOCOPYBITS | SWP_NOSIZE | SWP_NOACTIVATE);
}
}