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Fix problems resizing the window on Windows.

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+ Limit the minimum window size to 192x96.
+ Only accept multiples of 16 for width and height.
This commit is contained in:
David Capello 2010-12-11 21:39:58 -03:00
parent 02e82a326f
commit 06403f3ace
1 changed files with 39 additions and 4 deletions

43
src/allegro/src/win/wwnd.c

@ -188,7 +188,7 @@ static LRESULT CALLBACK directx_wnd_proc(HWND wnd, UINT message, WPARAM wparam,
wnd_width = LOWORD(lparam);
wnd_height = HIWORD(lparam);
if (/* (wnd_width > 0 && wnd_height > 0) && */
if ((wnd_width > 0 && wnd_height > 0) &&
(sizing || (wparam == SIZE_MAXIMIZED ||
wparam == SIZE_RESTORED))) {
sizing = FALSE;
@ -210,21 +210,29 @@ static LRESULT CALLBACK directx_wnd_proc(HWND wnd, UINT message, WPARAM wparam,
case WM_SIZING: {
LPRECT rc = (LPRECT)lparam;
int w = (rc->right - rc->left);
int dw = (w % 4);
int h = (rc->bottom - rc->top);
int dw = (w % 16);
int dh = (h % 16);
switch (wparam) {
case WMSZ_LEFT:
case WMSZ_TOPLEFT:
case WMSZ_BOTTOMLEFT: {
rc->left += dw;
if (w < 192)
rc->left = rc->right - 192;
else
rc->left += dw;
break;
}
case WMSZ_RIGHT:
case WMSZ_TOPRIGHT:
case WMSZ_BOTTOMRIGHT: {
rc->right -= dw;
if (w < 192)
rc->right = rc->left + 192;
else
rc->right -= dw;
break;
}
@ -233,6 +241,33 @@ static LRESULT CALLBACK directx_wnd_proc(HWND wnd, UINT message, WPARAM wparam,
/* Ignore */
break;
}
switch (wparam) {
case WMSZ_TOP:
case WMSZ_TOPLEFT:
case WMSZ_TOPRIGHT:
if (h < 96)
rc->top = rc->bottom - 96;
else
rc->top += dh;
break;
case WMSZ_BOTTOM:
case WMSZ_BOTTOMLEFT:
case WMSZ_BOTTOMRIGHT:
if (h < 96)
rc->bottom = rc->top + 96;
else
rc->bottom -= dh;
break;
case WMSZ_LEFT:
case WMSZ_RIGHT:
/* Ignore */
break;
}
sizing = TRUE;
return TRUE;
}