Windows: Custom frame behavior

A borderless SDL window gets no standard window behavior, so
this commit implements support for some of them. There is
special handling for the window frame and various snapping modes.

Not quite finished yet... It might make sense to research if
a custom window class could work with this app (with SDL); could be
less work.

1 files changed, 10 insertions, 15 deletions

diff --git a/src/app.c b/src/app.c
index b50321b2..64ddd70e 100644
--- a/src/app.c
+++ b/src/app.c
@@ -160,12 +160,12 @@ static iString *serializePrefs_App_(const iApp *d) {
     const iSidebarWidget *sidebar2 = findWidget_App("sidebar2");
     appendFormat_String(str, "window.retain arg:%d\n", d->prefs.retainWindowSize);
     if (d->prefs.retainWindowSize) {
-        const iBool isMaximized = (SDL_GetWindowFlags(d->window->win) & SDL_WINDOW_MAXIMIZED) != 0;
+        const iBool isMaximized = snap_Window(d->window) == maximized_WindowSnap;
         int w, h, x, y;
-        x = d->window->lastRect.pos.x;
-        y = d->window->lastRect.pos.y;
-        w = d->window->lastRect.size.x;
-        h = d->window->lastRect.size.y;
+        x = d->window->place.normalRect.pos.x;
+        y = d->window->place.normalRect.pos.y;
+        w = d->window->place.normalRect.size.x;
+        h = d->window->place.normalRect.size.y;
         appendFormat_String(str, "window.setrect width:%d height:%d coord:%d %d\n", w, h, x, y);
         appendFormat_String(str, "sidebar.width arg:%d\n", width_SidebarWidget(sidebar));
         appendFormat_String(str, "sidebar2.width arg:%d\n", width_SidebarWidget(sidebar2));
@@ -1113,22 +1113,17 @@ iBool handleCommand_App(const char *cmd) {
     }
     else if (equal_Command(cmd, "window.maximize")) {
         if (!argLabel_Command(cmd, "toggle")) {
-            SDL_MaximizeWindow(d->window->win);
+            setSnap_Window(d->window, maximized_WindowSnap);
         }
         else {
-            if (SDL_GetWindowFlags(d->window->win) & SDL_WINDOW_MAXIMIZED) {
-                SDL_RestoreWindow(d->window->win);
-            }
-            else {
-                SDL_MaximizeWindow(d->window->win);
-            }
+            setSnap_Window(d->window, snap_Window(d->window) == maximized_WindowSnap ? 0 : 
+                           maximized_WindowSnap);
         }
         return iTrue;
     }
     else if (equal_Command(cmd, "window.fullscreen")) {
-        const iBool wasFull =
-            (SDL_GetWindowFlags(d->window->win) & SDL_WINDOW_FULLSCREEN_DESKTOP) != 0;
-        SDL_SetWindowFullscreen(d->window->win, wasFull ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
+        const iBool wasFull = snap_Window(d->window) == fullscreen_WindowSnap;
+        setSnap_Window(d->window, wasFull ? 0 : fullscreen_WindowSnap);
         postCommandf_App("window.fullscreen.changed arg:%d", !wasFull);
         return iTrue;
     }