(svn r1) Import of revision 975 of old (crashed) SVN

1 files changed, 1209 insertions, 0 deletions

diff --git a/window.c b/window.c
new file mode 100644
index 000000000..e01066bf4
--- /dev/null
+++ b/window.c
@@ -0,0 +1,1209 @@
+#include "stdafx.h"
+#include "ttd.h"
+#include "window.h"
+#include "gfx.h"
+#include "viewport.h"
+
+void HandleButtonClick(Window *w, byte widget)
+{
+	w->click_state |= (1 << widget);
+	w->flags4 |= 5 << WF_TIMEOUT_SHL;
+	InvalidateWidget(w, widget);
+}
+
+void DispatchLeftClickEvent(Window *w, int x, int y) {
+	WindowEvent e;
+	const Widget *wi;
+
+	e.click.pt.x = x;
+	e.click.pt.y = y;
+	e.event = WE_CLICK;
+
+	if (w->desc_flags & WDF_DEF_WIDGET) {
+		e.click.widget = GetWidgetFromPos(w, x, y); 
+		if (e.click.widget < 0) return; /* exit if clicked outside of widgets */
+		
+		wi = &w->widget[e.click.widget];
+
+		if (wi->type & 0xE0) {
+			/* special widget handling */
+			switch(wi->type) {
+			case WWT_IMGBTN | WWB_PUSHBUTTON:
+			case WWT_TEXTBTN | WWB_PUSHBUTTON:
+				if (HASBIT(w->disabled_state, e.click.widget))
+					return; /* don't allow click if disabled */
+				HandleButtonClick(w, e.click.widget);
+				break;
+			case WWT_NODISTXTBTN:
+				if (HASBIT(w->disabled_state, e.click.widget))
+					return; /* don't allow click if disabled */
+				break;				
+			}
+		} else if (wi->type == WWT_SCROLLBAR || wi->type == WWT_HSCROLLBAR) {
+			ScrollbarClickHandler(w, wi, e.click.pt.x, e.click.pt.y);
+		}
+
+		w->wndproc(w, &e);
+		
+		if (w->desc_flags & WDF_STD_BTN) {
+			if (e.click.widget == 0) DeleteWindow(w);
+			else { 
+				if (e.click.widget == 1) {
+					if (_ctrl_pressed) 
+						StartWindowSizing(w); 
+					else 
+						StartWindowDrag(w);
+				}
+			}
+		}
+	} else {
+		w->wndproc(w, &e);
+	}
+}
+
+void DispatchRightClickEvent(Window *w, int x, int y) {
+	WindowEvent e;
+
+	/* default tooltips handler? */
+	if (w->desc_flags & WDF_STD_TOOLTIPS) {
+		e.click.widget = GetWidgetFromPos(w, x, y);
+		if (e.click.widget < 0)
+			return; /* exit if clicked outside of widgets */
+
+		if (w->widget[e.click.widget].tooltips != 0) {
+			GuiShowTooltips(w->widget[e.click.widget].tooltips);
+			return;
+		}
+	}
+
+	e.event = WE_RCLICK;
+	e.click.pt.x = x;
+	e.click.pt.y = y;
+	w->wndproc(w, &e);	
+}
+
+
+void DispatchMouseWheelEvent(Window *w, int wheel)
+{
+	
+	if (w->vscroll.count) {
+		int pos = clamp(w->vscroll.pos + wheel, 0, w->vscroll.count - w->vscroll.cap);
+		if (pos != w->vscroll.pos) {
+			w->vscroll.pos = pos;
+			SetWindowDirty(w);
+		}
+	}
+}
+
+
+void DrawOverlappedWindowForAll(int left, int top, int right, int bottom)
+{
+	Window *w;
+	DrawPixelInfo bk;
+	_cur_dpi = &bk;
+
+	for(w=_windows; w!=_last_window; w++) {
+		if (right > w->left && 
+				bottom > w->top &&
+				left < w->left + w->width &&
+				top < w->top + w->height) {
+				DrawOverlappedWindow(w, left, top, right, bottom);	
+			}		
+	}
+}
+
+void DrawOverlappedWindow(Window *w, int left, int top, int right, int bottom)
+{
+	Window *v = w;
+	int x;
+
+	while (++v != _last_window) {
+		if (right > v->left &&
+		 		bottom > v->top &&
+				left < v->left + v->width &&
+				top < v->top + v->height) {
+		
+			if (left < (x=v->left)) {
+				DrawOverlappedWindow(w, left, top, x, bottom);
+				DrawOverlappedWindow(w, x, top, right, bottom);
+				return;
+			}
+
+			if (right > (x=v->left + v->width)) {
+				DrawOverlappedWindow(w, left, top, x, bottom);
+				DrawOverlappedWindow(w, x, top, right, bottom);
+				return;
+			}
+
+			if (top < (x=v->top)) {
+				DrawOverlappedWindow(w, left, top, right, x);
+				DrawOverlappedWindow(w, left, x, right, bottom);
+				return;
+			}
+
+			if (bottom > (x=v->top + v->height)) {
+				DrawOverlappedWindow(w, left, top, right, x);
+				DrawOverlappedWindow(w, left, x, right, bottom);
+				return;
+			}
+
+			return;
+		}
+	}
+
+	{
+		DrawPixelInfo *dp = _cur_dpi;	
+		dp->width = right - left;
+		dp->height = bottom - top;
+		dp->left = left - w->left;
+		dp->top = top - w->top;
+		dp->pitch = _screen.pitch;
+		dp->dst_ptr = _screen.dst_ptr + top * _screen.pitch + left;
+		dp->zoom = 0;
+		CallWindowEventNP(w, WE_PAINT);
+	}
+}
+
+void CallWindowEventNP(Window *w, int event)
+{
+	WindowEvent e;
+	e.event = event;
+	w->wndproc(w, &e);
+}
+
+void SetWindowDirty(Window *w)
+{
+	if (w == NULL)
+		return;
+	
+	SetDirtyBlocks(w->left, w->top, w->left + w->width, w->top + w->height);
+}
+
+void DeleteWindow(Window *w)
+{
+	WindowClass wc;
+	WindowNumber wn;
+	ViewPort *vp;
+	Window *v;
+	int count;
+
+	if (w == NULL)
+		return;
+
+	if (_thd.place_mode != 0 && _thd.window_class == w->window_class && _thd.window_number == w->window_number) {
+		ResetObjectToPlace();
+	}
+
+	wc = w->window_class;
+	wn = w->window_number;
+
+	CallWindowEventNP(w, WE_DESTROY);
+
+	w = FindWindowById(wc, wn);
+
+	vp = w->viewport;
+	w->viewport = NULL;
+	if (vp != NULL) {
+		_active_viewports &= ~(1 << (vp - _viewports));
+		vp->width = 0;
+	}
+
+	SetWindowDirty(w);
+
+	v = --_last_window;
+	count = (byte*)v - (byte*)w;
+	memcpy(w, w + 1, count);
+}
+
+Window *FindWindowById(WindowClass cls, WindowNumber number)
+{
+	Window *w;
+
+	for(w=_windows; w!=_last_window; w++) {
+		if (w->window_class == cls && 
+			  w->window_number == number) {
+			return w;
+		}
+	}		
+
+	return NULL;
+}
+
+void DeleteWindowById(WindowClass cls, WindowNumber number)
+{
+	DeleteWindow(FindWindowById(cls, number));
+}	
+
+Window *BringWindowToFrontById(WindowClass cls, WindowNumber number)
+{
+	Window *w = FindWindowById(cls, number);
+
+	if (w != NULL) {
+		w->flags4 |= WF_WHITE_BORDER_MASK;
+		SetWindowDirty(w);
+		BringWindowToFront(w);
+	}
+
+	return w;
+}
+
+Window *BringWindowToFront(Window *w)
+{
+	Window *v;
+
+	v = _last_window;
+	do {
+		if (--v < _windows)
+			return w;
+	} while (v->window_class == WC_MAIN_TOOLBAR || v->window_class == WC_STATUS_BAR || v->window_class == WC_NEWS_WINDOW);
+
+	if (w == v)
+		return w;
+
+	assert(w < v);
+
+	do {
+		memswap(w, w+1, sizeof(Window));
+		w++;
+	} while (v != w);
+
+	SetWindowDirty(w);
+
+	return w;
+}
+
+Window *AllocateWindow(
+							int x,
+							int y,
+							int width,
+							int height,
+							WindowProc *proc, 
+							WindowClass cls,
+							const Widget *widget)
+{
+	Window *w;
+
+restart:;
+	w = _last_window;
+
+	if (w >= endof(_windows)) {
+		for(w=_windows; ;w++) {
+			assert(w < _last_window);
+
+			if (w->window_class != WC_MAIN_WINDOW && w->window_class != WC_MAIN_TOOLBAR &&
+			    w->window_class != WC_STATUS_BAR && w->window_class != WC_NEWS_WINDOW) {
+			
+					DeleteWindow(w);
+					goto restart;
+			}
+		}
+	}
+
+	if (w != _windows && cls != WC_NEWS_WINDOW) {
+		Window *v;
+
+		v = FindWindowById(WC_MAIN_TOOLBAR, 0);
+		if (v) {
+			memmove(v+1, v, (byte*)w - (byte*)v);
+			w = v;
+		}
+
+		v = FindWindowById(WC_STATUS_BAR, 0);
+		if (v) {
+			memmove(v+1, v, (byte*)w - (byte*)v);
+			w = v;
+		}
+	}
+
+	/* XXX: some more code here */
+	w->window_class = cls;
+	w->flags4 = WF_WHITE_BORDER_MASK;
+	w->caption_color = 0xFF;
+	w->window_number = 0;
+	w->left = x;
+	w->top = y;
+	w->width = width;
+	w->height = height;
+	w->viewport = NULL;
+	w->desc_flags = 0;
+//	w->landscape_assoc = 0xFFFF;
+	w->wndproc = proc;
+	w->click_state = 0;
+	w->disabled_state = 0;
+	w->hidden_state = 0;
+//	w->unk22 = 0xFFFF;
+	w->vscroll.pos = 0;
+	w->vscroll.count = 0;
+	w->hscroll.pos = 0;
+	w->hscroll.count = 0;
+	w->widget = widget;
+
+	((uint32*)w->custom)[0] = 0;
+	((uint32*)w->custom)[1] = 0;
+	((uint32*)w->custom)[2] = 0;
+	((uint32*)w->custom)[3] = 0;
+
+
+	_last_window++;
+
+	SetWindowDirty(w);
+
+	return w;
+}
+
+Window *AllocateWindowAutoPlace2(
+	WindowClass exist_class,
+	WindowNumber exist_num,
+	int width,
+	int height,
+	WindowProc *proc, 
+	WindowClass cls,
+	const Widget *widget)
+{
+	Window *w;
+	int x;
+	
+	w = FindWindowById(exist_class, exist_num);
+	if (w == NULL || w->left >= (_screen.width-20) || w->left <= -60 || w->top >= (_screen.height-20)) {
+		return AllocateWindowAutoPlace(width,height,proc,cls,widget);
+	}	
+
+	x = w->left;
+	if (x > _screen.width - width)
+		x = (_screen.width - width) - 20;
+
+	return AllocateWindow(x+10,w->top+10,width,height,proc,cls,widget);
+}
+
+
+typedef struct SizeRect {
+	int left,top,width,height;
+} SizeRect;
+
+
+static SizeRect _awap_r;
+
+static bool IsGoodAutoPlace1(int left, int top)
+{
+	int right,bottom;
+	Window *w;
+
+	_awap_r.left= left;
+	_awap_r.top = top;
+	right = _awap_r.width + left;
+	bottom = _awap_r.height + top;
+
+	if (left < 0 || top < 22 || right > _screen.width || bottom > _screen.height)
+		return false;
+
+	// Make sure it is not obscured by any window.	
+	for(w=_windows; w!=_last_window; w++) {
+		if (w->window_class == WC_MAIN_WINDOW)
+			continue;
+
+		if (right > w->left && 
+		    w->left + w->width > left &&
+				bottom > w->top &&
+				w->top + w->height > top)
+					return false;
+	}	
+
+	return true;
+}
+
+static bool IsGoodAutoPlace2(int left, int top)
+{
+	int width,height;
+	Window *w;
+
+	_awap_r.left= left;
+	_awap_r.top = top;
+	width = _awap_r.width;
+	height = _awap_r.height;
+
+	if (left < -(width>>2) || left > _screen.width - (width>>1))
+		return false;
+	if (top < 22 || top > _screen.height - (height>>2))
+		return false;
+
+	// Make sure it is not obscured by any window.	
+	for(w=_windows; w!=_last_window; w++) {
+		if (w->window_class == WC_MAIN_WINDOW)
+			continue;
+
+		if (left + width > w->left && 
+		    w->left + w->width > left &&
+				top + height > w->top &&
+				w->top + w->height > top)
+					return false;
+	}	
+
+	return true;
+}
+
+Point GetAutoPlacePosition(int width, int height) {
+	Window *w;
+	Point pt;
+
+	_awap_r.width = width;
+	_awap_r.height = height;
+
+	if (IsGoodAutoPlace1(0, 24)) goto ok_pos;
+
+	for(w=_windows; w!=_last_window; w++) {
+		if (w->window_class == WC_MAIN_WINDOW)
+			continue;
+
+		if (IsGoodAutoPlace1(w->left+w->width+2,w->top)) goto ok_pos;
+		if (IsGoodAutoPlace1(w->left-   width-2,w->top)) goto ok_pos;
+		if (IsGoodAutoPlace1(w->left,w->top+w->height+2)) goto ok_pos;
+		if (IsGoodAutoPlace1(w->left,w->top-   height-2)) goto ok_pos;
+		if (IsGoodAutoPlace1(w->left+w->width+2,w->top+w->height-height)) goto ok_pos;
+		if (IsGoodAutoPlace1(w->left-   width-2,w->top+w->height-height)) goto ok_pos;
+		if (IsGoodAutoPlace1(w->left+w->width-width,w->top+w->height+2)) goto ok_pos;
+		if (IsGoodAutoPlace1(w->left+w->width-width,w->top-   height-2)) goto ok_pos;
+	}	
+	
+	for(w=_windows; w!=_last_window; w++) {
+		if (w->window_class == WC_MAIN_WINDOW)
+			continue;
+
+		if (IsGoodAutoPlace2(w->left+w->width+2,w->top)) goto ok_pos;
+		if (IsGoodAutoPlace2(w->left-   width-2,w->top)) goto ok_pos;
+		if (IsGoodAutoPlace2(w->left,w->top+w->height+2)) goto ok_pos;
+		if (IsGoodAutoPlace2(w->left,w->top-   height-2)) goto ok_pos;
+	}
+
+	{
+		int left=0,top=24;
+		
+restart:;
+		for(w=_windows; w!=_last_window; w++) {
+			if (w->left == left && w->top == top) {
+				left += 5;
+				top += 5;
+				goto restart;
+			}
+		}
+		
+		pt.x = left;
+		pt.y = top;
+		return pt;
+	}
+	
+ok_pos:;
+	pt.x = _awap_r.left;
+	pt.y = _awap_r.top;
+	return pt;
+}
+
+Window *AllocateWindowAutoPlace(
+	int width,
+	int height,
+	WindowProc *proc, 
+	WindowClass cls,
+	const Widget *widget) {
+
+	Point pt = GetAutoPlacePosition(width, height);
+	return AllocateWindow(pt.x, pt.y, width, height, proc, cls, widget);
+}
+
+Window *AllocateWindowDescFront(const WindowDesc *desc, int value)
+{
+	Window *w;
+
+	if (BringWindowToFrontById(desc->cls, value))
+		return NULL;
+	w = AllocateWindowDesc(desc);
+	w->window_number = value;
+	return w;
+}
+
+Window *AllocateWindowDesc(const WindowDesc *desc)
+{
+	Point pt;
+	Window *w;
+
+	if (desc->parent_cls != WC_MAIN_WINDOW && 
+			(w = FindWindowById(desc->parent_cls, _alloc_wnd_parent_num), _alloc_wnd_parent_num=0, w) != NULL &&
+			w->left < _screen.width-20 && w->left > -60 && w->top < _screen.height-20) {
+		pt.x = w->left + 10;
+		if (pt.x > _screen.width + 10 - desc->width)
+			pt.x = (_screen.width + 10 - desc->width) - 20;
+		pt.y = w->top + 10;
+	} else {
+		pt.x = desc->left;
+		pt.y = desc->top;
+		if (pt.x == WDP_AUTO) {
+			pt = GetAutoPlacePosition(desc->width, desc->height);
+		} else {
+			if (pt.x == WDP_CENTER) pt.x = (_screen.width - desc->width) >> 1;
+			if (pt.y == WDP_CENTER) pt.y = (_screen.height - desc->height) >> 1;
+		}
+	}
+
+	w = AllocateWindow(pt.x, pt.y, desc->width, desc->height, desc->proc, desc->cls, desc->widgets);
+	w->desc_flags = desc->flags;
+	return w;
+}
+
+Window *FindWindowFromPt(int x, int y)
+{
+	Window *w;
+
+	for(w=_last_window; w != _windows;) {
+		--w;
+		if (IS_INSIDE_1D(x, w->left, w->width) &&
+		    IS_INSIDE_1D(y, w->top, w->height))
+					return w;
+	}
+
+	return NULL;
+}
+
+
+void InitWindowSystem()
+{
+	memset(&_windows, 0, sizeof(_windows));
+	_last_window = _windows;
+	memset(_viewports, 0, sizeof(_viewports));
+	_active_viewports = 0;
+}
+
+void DecreaseWindowCounters()
+{
+	Window *w;
+
+
+	for(w=_last_window; w != _windows;) {
+		--w;
+		// Unclick scrollbar buttons if they are pressed.
+		if (w->flags4 & (WF_SCROLL_DOWN | WF_SCROLL_UP)) {
+			w->flags4 &= ~(WF_SCROLL_DOWN | WF_SCROLL_UP);
+			SetWindowDirty(w);
+		}
+		CallWindowEventNP(w, WE_MOUSELOOP);
+	}
+
+	for(w=_last_window; w != _windows;) {
+		--w;
+		
+		if (w->flags4&WF_TIMEOUT_MASK && !(--w->flags4&WF_TIMEOUT_MASK)) {
+			CallWindowEventNP(w, WE_TIMEOUT);
+			if (w->desc_flags & WDF_UNCLICK_BUTTONS)
+				UnclickWindowButtons(w);
+		}
+	}
+}
+
+Window *GetCallbackWnd()
+{
+	return FindWindowById(_thd.window_class, _thd.window_number);
+}
+
+void HandlePlacePresize()
+{
+	Window *w;
+	WindowEvent e;
+
+	if (_special_mouse_mode != WSM_PRESIZE)
+		return;
+
+	if ((w = GetCallbackWnd()) == NULL)
+		return;
+
+	e.place.pt = GetTileBelowCursor();
+	if (e.place.pt.x == -1) {
+		_thd.selend.x = -1;
+		return;
+	}
+	e.place.tile = TILE_FROM_XY(e.place.pt.x, e.place.pt.y);
+	e.event = WE_PLACE_PRESIZE;
+	w->wndproc(w, &e);
+}
+
+bool HandleDragDrop()
+{
+	Window *w;
+	WindowEvent e;
+
+	if (_special_mouse_mode != WSM_DRAGDROP)
+		return true;
+
+	if (_left_button_down)
+		return false;
+	
+	w = GetCallbackWnd();
+
+	ResetObjectToPlace();
+
+	if (w) {
+		// send an event in client coordinates.
+		e.event = WE_DRAGDROP;
+		e.dragdrop.pt.x = _cursor.pos.x - w->left;
+		e.dragdrop.pt.y = _cursor.pos.y - w->top;
+		e.dragdrop.widget = GetWidgetFromPos(w, e.dragdrop.pt.x, e.dragdrop.pt.y);
+		w->wndproc(w, &e);
+	}
+	return false;
+}
+
+bool HandlePopupMenu()
+{
+	Window *w;
+	WindowEvent e;
+
+	if (!_popup_menu_active)
+		return true;
+
+	w = FindWindowById(WC_TOOLBAR_MENU, 0);
+	if (w == NULL) {
+		_popup_menu_active = false;
+		return false;
+	}
+
+	if (_left_button_down) {
+		e.event = WE_POPUPMENU_OVER;
+		e.popupmenu.pt = _cursor.pos;
+		w->wndproc(w, &e);
+	} else {
+		_popup_menu_active = false;
+		e.event = WE_POPUPMENU_SELECT;
+		e.popupmenu.pt = _cursor.pos;
+		w->wndproc(w, &e);
+	}
+
+	return false;
+}
+
+bool HandleWindowDragging() 
+{
+	Window *w;
+	int x, y, t;
+
+	// Get out immediately if no window is being dragged at all.
+	if (!_dragging_window)
+		return true;
+
+	// Otherwise find the window...
+	for(w=_windows; w != _last_window; w++) {
+		if (w->flags4&(WF_DRAGGING|WF_SIZING)) {
+			
+			// Stop the dragging if the left mouse button was released
+			if (!_left_button_down) {
+				w->flags4 &= ~(WF_DRAGGING | WF_SIZING);
+				break;
+			}
+
+			// Otherwise calculate the delta position.
+			x = _cursor.pos.x;
+			y = clamp2(_cursor.pos.y, 23, _screen.height-12);
+			t = _cursorpos_drag_start.x; _cursorpos_drag_start.x = x; x-=t;
+			t = _cursorpos_drag_start.y; _cursorpos_drag_start.y = y; y-=t;
+
+			// No movement?
+			if (x == 0 && y == 0)
+				return false;
+
+			// Mark the old position dirty
+			SetWindowDirty(w);
+
+			if (w->flags4 & WF_SIZING) {
+				// Size the window
+				w->width += x;
+				w->height += y;
+			} else {
+				// Move the window and viewport
+				w->left += x;
+				w->top += y;
+				if (w->viewport) {
+					w->viewport->left += x;
+					w->viewport->top += y;
+				}
+			}
+				
+			// And also mark the new position dirty.
+			SetWindowDirty(w);
+			return false;
+		}
+	}
+
+	_dragging_window = false;
+	return false;
+}
+
+Window *StartWindowDrag(Window *w)
+{
+	w->flags4 |= WF_DRAGGING;
+	_dragging_window = true;
+	_cursorpos_drag_start = _cursor.pos;
+	w = BringWindowToFront(w);
+	DeleteWindowById(WC_DROPDOWN_MENU, 0);
+	return w;
+}
+
+Window *StartWindowSizing(Window *w)
+{
+	w->flags4 |= WF_SIZING;
+	_dragging_window = true;
+	_cursorpos_drag_start = _cursor.pos;
+	w = BringWindowToFront(w);
+	DeleteWindowById(WC_DROPDOWN_MENU, 0);
+	return w;
+}
+
+
+bool HandleScrollbarScrolling()
+{
+	Window *w;
+	int i;
+	int pos;
+	Scrollbar *sb;
+
+	// Get out quickly if no item is being scrolled
+	if (!_scrolling_scrollbar)
+		return true;
+
+	// Find the scrolling window
+	for(w=_windows; w != _last_window; w++) {
+		if (w->flags4 & WF_SCROLL_MIDDLE) {
+			// Abort if no button is clicked any more.
+			if (!_left_button_down) {
+				w->flags4 &= ~WF_SCROLL_MIDDLE;
+				SetWindowDirty(w);
+				break;
+			}	
+
+			if (w->flags4 & WF_HSCROLL) {
+				sb = &w->hscroll;
+				i = _cursor.pos.x - _cursorpos_drag_start.x;
+			} else {
+				sb = &w->vscroll;
+				i = _cursor.pos.y - _cursorpos_drag_start.y;
+			}
+
+			// Find the item we want to move to and make sure it's inside bounds.
+			pos = min(max(0, i + _scrollbar_start_pos) * sb->count / _scrollbar_size, max(0, sb->count - sb->cap));
+			if (pos != sb->pos) {
+				sb->pos = pos;
+				SetWindowDirty(w);
+			}
+			return false;
+		}		
+	}
+	
+	_scrolling_scrollbar = false;
+	return false;
+}
+
+bool HandleViewportScroll() 
+{
+	Window *w;
+	ViewPort *vp;
+	int dx,dy, x, y, sub;
+
+	if (!_scrolling_viewport)
+		return true;
+
+	if (!_right_button_down) {
+stop_capt:;
+		_cursor.fix_at = false;
+		_scrolling_viewport = false;
+		return true;
+	}
+	
+	w = FindWindowFromPt(_cursor.pos.x, _cursor.pos.y);
+	if (w == NULL) goto stop_capt;
+
+	if (w->window_class != WC_SMALLMAP) {
+		vp = IsPtInWindowViewport(w, _cursor.pos.x, _cursor.pos.y);
+		if (vp == NULL)
+			goto stop_capt;
+
+		WP(w,vp_d).scrollpos_x += _cursor.delta.x << vp->zoom;
+		WP(w,vp_d).scrollpos_y += _cursor.delta.y << vp->zoom;
+		_cursor.delta.x = _cursor.delta.y = 0;
+		return false;
+	} else {
+		// scroll the smallmap ?
+		
+		_cursor.fix_at = true;
+		
+		dx = _cursor.delta.x;
+		dy = _cursor.delta.y;
+
+		x = WP(w,smallmap_d).scroll_x;
+		y = WP(w,smallmap_d).scroll_y;
+
+		sub = WP(w,smallmap_d).subscroll + dx;
+
+		x -= (sub >> 2) << 4;
+		y += (sub >> 2) << 4;
+		sub &= 3;
+
+		x += (dy >> 1) << 4;
+		y += (dy >> 1) << 4;
+
+		if (dy & 1) {
+			x += 16;
+			sub += 2;
+			if (sub > 3) {
+				sub -= 4;
+				x -= 16;
+				y += 16;
+			}
+		}
+
+		if (x < 16) { x = 16; sub = 0; }
+		if (x > (TILES_X-2)*16) { x = (TILES_X-2)*16; sub = 0; }
+		if (y < -1120) { y = -1120; sub = 0; }
+		if (y > (TILE_X_MAX-40) * 16) { y = (TILE_X_MAX-40) * 16; sub = 0; }
+
+		WP(w,smallmap_d).scroll_x = x;
+		WP(w,smallmap_d).scroll_y = y;
+		WP(w,smallmap_d).subscroll = sub;
+
+		_cursor.delta.x = _cursor.delta.y = 0;
+
+		SetWindowDirty(w);
+		return false;
+	}
+}
+
+static Window *MaybeBringWindowToFront(Window *w)
+{
+	Window *u;
+
+	if (w->window_class == WC_MAIN_WINDOW ||
+			w->window_class == WC_MAIN_TOOLBAR ||
+			w->window_class == WC_STATUS_BAR ||
+			w->window_class == WC_NEWS_WINDOW ||
+			w->window_class == WC_TOOLTIPS ||
+			w->window_class == WC_DROPDOWN_MENU)
+				return w;
+
+	for(u=w; ++u != _last_window;) {
+		if (u->window_class == WC_MAIN_WINDOW || u->window_class==WC_MAIN_TOOLBAR || u->window_class==WC_STATUS_BAR ||
+				u->window_class == WC_NEWS_WINDOW || u->window_class == WC_TOOLTIPS || u->window_class == WC_DROPDOWN_MENU)
+				continue;
+
+		if (w->left + w->width <= u->left ||
+				u->left + u->width <= w->left ||
+				w->top  + w->height <= u->top ||
+				u->top + u->height <= w->top)
+					continue;
+		
+		return BringWindowToFront(w);	
+	}
+
+	return w;
+}
+
+static void HandleKeypress(uint32 key)
+{
+	Window *w;
+	WindowEvent we;
+	
+	// Setup event
+	we.keypress.event = WE_KEYPRESS;
+	we.keypress.ascii = key & 0xFF;
+	we.keypress.keycode = key >> 16;
+	we.keypress.cont = true;
+
+	// Call the event, start with the uppermost window.
+	for(w=_last_window; w != _windows;) {
+		--w;
+		w->wndproc(w, &we);
+		if (!we.keypress.cont)
+			break;
+	}
+}
+
+extern void UpdateTileSelection();
+extern bool VpHandlePlaceSizingDrag();
+
+void MouseLoop()
+{
+	int x,y;
+	Window *w;
+	ViewPort *vp;
+	int click;
+	int mousewheel;
+
+	_current_player = _local_player;
+
+	// Handle pressed keys
+	if (_pressed_key) {
+		uint32 key = _pressed_key; _pressed_key = 0;
+		HandleKeypress(key);
+	}
+
+	// Mouse event?
+	click = 0;
+	if (_left_button_down && !_left_button_clicked) {
+		_left_button_clicked = true;
+		click = 1;
+	} else if (_right_button_clicked) {
+		_right_button_clicked = false;
+		click = 2;
+	}
+
+	mousewheel = 0;
+	if (_cursor.wheel) {
+		mousewheel = _cursor.wheel;
+		_cursor.wheel = 0;
+	}
+	
+	DecreaseWindowCounters();
+	HandlePlacePresize();
+	UpdateTileSelection();
+	if (!VpHandlePlaceSizingDrag())
+		return;
+
+	if (!HandleDragDrop())
+		return;
+
+	if (!HandlePopupMenu())
+		return;
+
+	if (!HandleWindowDragging())
+		return;
+
+	if (!HandleScrollbarScrolling())
+		return;
+
+	if (!HandleViewportScroll())
+		return;
+	
+	x = _cursor.pos.x;
+	y = _cursor.pos.y;
+
+
+	if (click == 0 && mousewheel == 0) {
+		if (_patches.autoscroll && _game_mode != GM_MENU) {
+			w = FindWindowFromPt(x, y);
+			if (w == NULL || w->flags4 & WF_DISABLE_VP_SCROLL ) return;
+			vp = IsPtInWindowViewport(w, x, y);
+			if (vp) {
+				x -= vp->left;
+				y -= vp->top;
+				//here allows scrolling in both x and y axis
+#define scrollspeed 3
+				if (x-15<0) { WP(w,vp_d).scrollpos_x += (x-15) * scrollspeed << vp->zoom; }
+				else if (15-(vp->width-x) > 0) { WP(w,vp_d).scrollpos_x += (15-(vp->width-x))*scrollspeed << vp->zoom; }
+				if (y-15<0) { WP(w,vp_d).scrollpos_y += (y-15)*scrollspeed << vp->zoom; }
+				else if (15-(vp->height-y) > 0) { WP(w,vp_d).scrollpos_y += (15-(vp->height-y))*scrollspeed << vp->zoom; }
+#undef scrollspeed		
+			}
+		}
+		return;
+	}
+
+	w = FindWindowFromPt(x, y);
+	if (w == NULL)
+		return;
+	w = MaybeBringWindowToFront(w);
+	vp = IsPtInWindowViewport(w, x, y);
+	if (vp != NULL) {
+		if (_game_mode == GM_MENU)
+			return;
+
+		if (mousewheel && !(w->flags4 & WF_DISABLE_VP_SCROLL)) {
+			ZoomInOrOutToCursor(mousewheel < 0);
+		}
+
+		if (click == 1) {
+			if (_thd.place_mode != 0 &&
+					_cursor.sprite != 0x2CF &&
+					_pause != 0 &&
+					!_patches.build_in_pause)
+						return;
+			
+			if (_thd.place_mode == 0) {
+				HandleViewportClicked(vp, x, y);
+			} else {
+				PlaceObject();
+			}
+		} else if (click == 2) {
+			if (!(w->flags4 & WF_DISABLE_VP_SCROLL)) {
+				_scrolling_viewport = true;
+				_cursor.fix_at = true;
+			}
+		}
+	} else {
+		if (mousewheel)
+			DispatchMouseWheelEvent(w, mousewheel);
+
+		if (click == 1)
+			DispatchLeftClickEvent(w, x - w->left, y - w->top);
+		else if (click == 2)
+			DispatchRightClickEvent(w, x - w->left, y - w->top);
+	}
+}
+
+static int _we4_timer;
+
+extern uint32 _pixels_redrawn;
+
+void UpdateWindows()
+{
+	Window *w;
+	int t;
+
+
+	if ((t=_we4_timer+1) >= 100) {
+		for(w = _last_window; w != _windows;) {
+			w--;
+			CallWindowEventNP(w, WE_4);
+		}
+		t = 0;
+	}
+	_we4_timer = t;
+
+	for(w = _last_window; w != _windows;) {
+		w--;
+		if (w->flags4 & WF_WHITE_BORDER_MASK) {
+			w->flags4 -= WF_WHITE_BORDER_ONE;
+			if (!(w->flags4 & WF_WHITE_BORDER_MASK)) {
+				SetWindowDirty(w);
+			}
+		}
+	}
+
+	DrawDirtyBlocks();
+
+	for(w = _windows; w!=_last_window; w++) {
+		if (w->viewport != NULL)
+			UpdateViewportPosition(w);
+	}
+	// Redraw mouse cursor in case it was hidden
+	DrawMouseCursor();
+}	
+
+
+int GetMenuItemIndex(Window *w, int x, int y)
+{
+	if ((x -= w->left) >= 0 && x < w->width && (y -= w->top + 1) >= 0) {
+		y /= 10;
+
+		if (y < WP(w,menu_d).item_count)
+			return y;
+	}
+	return -1;
+}
+
+void InvalidateWindow(byte cls, WindowNumber number)
+{
+	Window *w;
+
+	for(w=_windows; w!=_last_window; w++) {
+		if (w->window_class==cls && w->window_number==number)
+			SetWindowDirty(w);
+	}
+}
+
+void InvalidateWidget(Window *w, byte widget_index)
+{
+	const Widget *wi = &w->widget[widget_index];
+//	if (wi->left != -2) {
+		SetDirtyBlocks(
+			w->left + wi->left, 
+			w->top + wi->top,
+			w->left + wi->right + 1,
+			w->top + wi->bottom + 1);
+//	}		
+}
+
+void InvalidateWindowWidget(byte cls, WindowNumber number, byte widget_index)
+{
+	Window *w;
+
+	for(w=_windows; w!=_last_window; w++) {
+		if (w->window_class==cls && w->window_number==number) {
+			InvalidateWidget(w, widget_index);
+		}
+	}
+}
+
+void InvalidateWindowClasses(byte cls)
+{
+	Window *w;
+	for(w=_windows; w!=_last_window; w++) {
+		if (w->window_class==cls)
+			SetWindowDirty(w);
+	}
+}
+
+
+void CallWindowTickEvent()
+{
+	Window *w;
+	for(w=_last_window; w != _windows;) {
+		--w;
+		CallWindowEventNP(w, WE_TICK);
+	}
+}
+
+void DeleteNonVitalWindows()
+{
+	Window *w;
+	for(w=_windows; w!=_last_window;) {
+		if (w->window_class != WC_MAIN_WINDOW &&
+				w->window_class != WC_SELECT_GAME &&
+				w->window_class != WC_MAIN_TOOLBAR &&
+				w->window_class != WC_STATUS_BAR &&
+				w->window_class != WC_TOOLBAR_MENU &&
+				w->window_class != WC_TOOLTIPS) {
+			DeleteWindow(w);
+			w = _windows;
+		} else {
+			w++;
+		}
+	}
+}
+
+void RelocateAllWindows(int neww, int newh)
+{
+	Window *w;
+
+	for(w=_windows; w!= _last_window ;w++) {
+		int left, top;
+	
+		if (w->window_class == WC_MAIN_WINDOW) {
+			ViewPort *vp = w->viewport;
+			vp->width = w->width = neww;
+			vp->height = w->height = newh;
+			vp->virtual_width = neww << vp->zoom;
+			vp->virtual_height = newh << vp->zoom;
+			continue; // don't modify top,left
+		}
+
+		if (w->window_class == WC_MAIN_TOOLBAR) {
+			top = w->top;
+			left = (neww - w->width) >> 1;
+		} else if (w->window_class == WC_SELECT_GAME || w->window_class == WC_GAME_OPTIONS || w->window_class == WC_NETWORK_WINDOW){	
+			top = (newh - w->height) >> 1;
+			left = (neww - w->width) >> 1;
+		} else if (w->window_class == WC_NEWS_WINDOW) {
+			top = newh - w->height;
+			left = (neww - w->width) >> 1;
+		} else if (w->window_class == WC_STATUS_BAR) {
+			top = newh - w->height;
+			left = (neww - w->width) >> 1;	
+		} else {
+			left = w->left;
+			if (left + (w->width>>1) >= neww) left = neww - w->width;
+			top = w->top;
+			if (top + (w->height>>1) >= newh) top = newh - w->height;
+		}
+
+		if (w->viewport) {
+			w->viewport->left += left - w->left;
+			w->viewport->top += top - w->top;
+		}
+
+		w->left = left;
+		w->top = top;
+	}
+}
+