Changeset 183

Timestamp:

Sep 16, 2009, 5:47:31 PM (16 years ago)

Author:

Dmitry A. Kuminov

Message:

gui: Implemented widget scrolling (QWidget::scroll() and friends).

File:

• trunk/src/gui/kernel/qwidget_pm.cpp (modified) (2 diffs)

trunk/src/gui/kernel/qwidget_pm.cpp

@@ -777 +777 @@
 
 /*!
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  * \internal
  * For some unknown reason, PM sends WM_SAVEAPPLICATION to every window
@@ -2084 +2205 @@
 void QWidgetPrivate::scroll_sys(int dx, int dy)
 {
-    // @todo implement
+    Q_Q(QWidget);
+    scrollChildren(dx, dy);
+
+    if (!paintOnScreen()) {
+        scrollRect(q->rect(), dx, dy);
+    } else {
+        // @todo ask qt_WinScrollWindowWell() to erase background if
+        // WA_OpaquePaintEvent is reset?
+        //if (!q->testAttribute(Qt::WA_OpaquePaintEvent))
+        //    ;
+        Q_ASSERT(q->testAttribute(Qt::WA_WState_Created));
+        qt_WinScrollWindowWell(q->internalWinId(), dx, -dy, NULL);
+    }
 }
 
 void QWidgetPrivate::scroll_sys(int dx, int dy, const QRect &r)
 {
-    // @todo implement
+    Q_Q(QWidget);
+
+    if (!paintOnScreen()) {
+        scrollRect(r, dx, dy);
+    } else {
+        int h = data.crect.height();
+        // flip y coordinate (all coordinates are inclusive)
+        RECTL rcl = { r.left(), h - (r.bottom() + 1), r.right(), h - (r.top() + 1) };
+
+        // @todo ask qt_WinScrollWindowWell() to erase background if
+        // WA_OpaquePaintEvent is reset?
+        //if (!q->testAttribute(Qt::WA_OpaquePaintEvent))
+        //    ;
+        Q_ASSERT(q->testAttribute(Qt::WA_WState_Created));
+        qt_WinScrollWindowWell(q->internalWinId(), dx, -dy, &rcl);
+    }
 }