Changeset 469 for trunk/src/gui/kernel

Timestamp:

Jan 22, 2010, 8:50:23 PM (16 years ago)

Author:

Dmitry A. Kuminov

Message:

gui: DnD: Implemented support for setting the drag pixmap.

File:

• trunk/src/gui/kernel/qdnd_pm.cpp (modified) (1 diff)

trunk/src/gui/kernel/qdnd_pm.cpp

@@ -1219 +1219 @@
 #endif
 
-    // @todo custom drag pixmap?
-
     DRAGIMAGE img;
     img.cb = sizeof(DRAGIMAGE);
-    img.hImage = WinQuerySysPointer(HWND_DESKTOP, SPTR_FILE, FALSE);
-    img.fl = DRG_ICON;
-    img.cxOffset = 0;
-    img.cyOffset = 0;
+
+    QPixmap pm = dragPrivate()->pixmap;
+    if (!pm.isNull()) {
+        if (pm.hasAlpha()) {
+            // replace the black pixels with the neutral default window
+            // background color
+            QPixmap pm2(pm.width(), pm.height());
+            pm2.fill(QApplication::palette().color(QPalette::Window));
+            QPainter p(&pm2);
+            p.drawPixmap(0, 0, pm);
+            p.end();
+            pm = pm2;
+        }
+        QPoint hot = dragPrivate()->hotspot;
+        img.fl = DRG_BITMAP;
+        img.hImage = pm.toPmHBITMAP();
+        img.cxOffset = -hot.x();
+        img.cyOffset = -(pm.height() - hot.y() - 1);
+    } else {
+        img.fl = DRG_ICON;
+        img.hImage = WinQuerySysPointer(HWND_DESKTOP, SPTR_FILE, FALSE);
+        img.cxOffset = 0;
+        img.cyOffset = 0;
+    }
 
     // the mouse is most likely captured by Qt at this point, uncapture it