+// cerr << "Scrolling. delta = " << dx << ", " << dy << endl;
+ int x, y, w, h;
+ if (rect)
+ {
+ // Use specified rectangle
+ x = rect->x; y = rect->y; w = rect->width; h = rect->height;
+ }
+ else
+ {
+ // Use whole client area
+ x = 0; y = 0;
+ GetClientSize(& w, & h);
+ }
+
+ int x1 = (dx >= 0) ? x : x - dx ;
+ int y1 = (dy >= 0) ? y : y - dy;
+ int w1 = w - abs(dx);
+ int h1 = h - abs(dy);
+ int x2 = (dx >= 0) ? x + dx : x;
+ int y2 = (dy >= 0) ? y + dy : y;
+
+ wxClientDC dc(this);
+
+ dc.SetLogicalFunction (wxCOPY);
+
+ Widget widget = (Widget) GetMainWidget();
+ Window window = XtWindow(widget);
+ Display* display = XtDisplay(widget);
+
+ XCopyArea(display, window,
+ window, (GC) dc.GetGC(),
+ x1, y1,
+ w1, h1,
+ x2, y2);
+
+ dc.SetAutoSetting(TRUE);
+ wxBrush brush(GetBackgroundColour(), wxSOLID);
+ dc.SetBrush(brush); // ??
+
+ // We'll add rectangles to the list of update rectangles
+ // according to which bits we've exposed.
+ wxList updateRects;
+
+ if (dx > 0)
+ {
+ wxRect *rect = new wxRect;
+ rect->x = x;
+ rect->y = y;
+ rect->width = dx;
+ rect->height = h;
+
+ XFillRectangle(display, window,
+ (GC) dc.GetGC(), rect->x, rect->y, rect->width, rect->height);
+
+ rect->x = rect->x;
+ rect->y = rect->y;
+ rect->width = rect->width;
+ rect->height = rect->height;
+
+ updateRects.Append((wxObject*) rect);
+ }
+ else if (dx < 0)
+ {
+ wxRect *rect = new wxRect;
+
+ rect->x = x + w + dx;
+ rect->y = y;
+ rect->width = -dx;
+ rect->height = h;
+
+ XFillRectangle(display, window,
+ (GC) dc.GetGC(), rect->x, rect->y, rect->width,
+ rect->height);
+
+ rect->x = rect->x;
+ rect->y = rect->y;
+ rect->width = rect->width;
+ rect->height = rect->height;
+
+ updateRects.Append((wxObject*) rect);
+ }
+ if (dy > 0)
+ {
+ wxRect *rect = new wxRect;
+
+ rect->x = x;
+ rect->y = y;
+ rect->width = w;
+ rect->height = dy;
+
+ XFillRectangle(display, window,
+ (GC) dc.GetGC(), rect->x, rect->y, rect->width, rect->height);
+
+ rect->x = rect->x;
+ rect->y = rect->y;
+ rect->width = rect->width;
+ rect->height = rect->height;
+
+ updateRects.Append((wxObject*) rect);
+ }
+ else if (dy < 0)
+ {
+ wxRect *rect = new wxRect;
+
+ rect->x = x;
+ rect->y = y + h + dy;
+ rect->width = w;
+ rect->height = -dy;
+
+ XFillRectangle(display, window,
+ (GC) dc.GetGC(), rect->x, rect->y, rect->width, rect->height);
+
+ rect->x = rect->x;
+ rect->y = rect->y;
+ rect->width = rect->width;
+ rect->height = rect->height;
+
+ updateRects.Append((wxObject*) rect);
+ }
+ dc.SetBrush(wxNullBrush);
+
+ // Now send expose events
+
+ wxNode* node = updateRects.First();
+ while (node)
+ {
+ wxRect* rect = (wxRect*) node->Data();
+ XExposeEvent event;
+
+ event.type = Expose;
+ event.display = display;
+ event.send_event = True;
+ event.window = window;
+
+ event.x = rect->x;
+ event.y = rect->y;
+ event.width = rect->width;
+ event.height = rect->height;
+
+ event.count = 0;
+
+ XSendEvent(display, window, False, ExposureMask, (XEvent *)&event);
+
+ node = node->Next();
+
+ }
projects / wxWidgets.git / blobdiff