--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/window.c Mon Aug 09 17:04:08 2004 +0000
@@ -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;
+ }
+}
+